WO2019030852A1 - オゾンガス利用システム - Google Patents
オゾンガス利用システム Download PDFInfo
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- WO2019030852A1 WO2019030852A1 PCT/JP2017/028921 JP2017028921W WO2019030852A1 WO 2019030852 A1 WO2019030852 A1 WO 2019030852A1 JP 2017028921 W JP2017028921 W JP 2017028921W WO 2019030852 A1 WO2019030852 A1 WO 2019030852A1
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- Prior art keywords
- ozone
- gas
- ozone gas
- utilization system
- transformer
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/30—Catalysts, in general, characterised by their form or physical properties characterised by their physical properties
- B01J35/39—Photocatalytic properties
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B13/00—Oxygen; Ozone; Oxides or hydroxides in general
- C01B13/10—Preparation of ozone
- C01B13/11—Preparation of ozone by electric discharge
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/78—Details relating to ozone treatment devices
- C02F2201/782—Ozone generators
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Definitions
- the present invention uses an ozone gas utilization system for achieving downsizing and high efficiency including an application device for performing ozone utilization treatment using ozone gas generated from an ozone gas generation and treatment apparatus, and ozone gas for reducing environmental load.
- the present invention relates to an application device that performs ozone utilization processing.
- Patent Document 1 is given as a document disclosing a technology in which the source gas and the discharge surface material are combined, and as a document disclosing the discharge surface material technology, for example Patent documents 6 are mentioned.
- Patent Document 1 as an ozone generator capable of generating high concentration ozone having a concentration of 200 [g / m 3 ] or more, one obtained by adding 0.1% to several% of nitrogen gas to oxygen gas as a source gas to be supplied It is used. Then, when a trace amount of nitrogen gas is turned into a nitrogen oxide gas by discharging, this trace amount of nitrogen oxide gas acts as a catalyst to dissociate a large amount of oxygen molecules to generate high concentration oxygen atoms. Have the ability. As a result, high concentration ozone can be generated by a three-body collision reaction of high concentration oxygen atoms and oxygen molecules generated through this nitrogen oxide.
- Patent Document 1 most of the ozone generators as commercially available products are the source gases shown in Patent Document 1 in which 0.1% or more (1000 ppm to several% (several tens of thousands of ppm) nitrogen gas is added to oxygen gas).
- the technology is divided into two technologies: technology to generate ozone, and technology to generate ozone gas by the chemical reaction between oxygen and the discharge surface other than the source gas.
- the source gas to which nitrogen gas is added is a technology that generates ozone, and the amount of oxygen atoms generated by the catalytic action of nitrogen gas rather than the amount of oxygen atom dissociation due to oxygen molecule collision of electrons generated by discharge
- nitrogen oxide gas By generating nitrogen oxide gas, the action of generating oxygen atoms by catalysis by the discharge photocatalytic reaction of nitrogen oxide gas and the chemical reaction of nitrogen oxide gas is very much Utilizing the amount of oxygen atoms occupy half is generating high concentrations of ozone gas.
- nitrogen gas in the raw material gas for most of the commercially available ozone generators, and accordingly, when ozone is generated, it corresponds to about several percent to several tens percent of the amount of nitrogen added. It becomes an apparatus that generates several tens ppm to several hundreds ppm nitrogen dioxide and NOx such as nitrogen monoxide, and most conventional ozone generators do not have sufficient measures for removing NOx to increase the environmental load.
- ozone can be generated by generating a large oxygen atomic weight without containing nitrogen gas in the source gas. Since the equipment and technology (nitrogen-less ozone generator and nitrogen-less ozone generation technology) to be generated are shown and ozone gas can be generated with high efficiency without containing nitrogen gas in the source gas almost, the generated high concentration ozone gas
- the present invention is characterized in that an ozone generator with small environmental load, which is almost free from NOx such as nitrogen dioxide and nitrogen monoxide, can be realized.
- the ozone generator having a large electric capacity and ozone generation capacity is an apparatus suitable for an ozone gas utilization system which targets a very large scale treatment site of the ozone treatment capacity.
- Such a relatively large-scale ozone generator has a very large apparatus volume, a very large source gas facility, and a large-scale application apparatus for performing ozone utilization processing.
- the electric capacity of the ozone generator is large, it becomes difficult to secure an electric supply source for the ozone generator. Therefore, with a relatively large scale ozone generator, it has not been possible to create an ozone gas utilization system including an application device using small-scale ozone gas that is easy to use in remote areas and remote islands.
- the conventional application device using ozone gas uses ozone gas generated from a large-scale discharge-type ozone generator which contains about 1% (10,000 ppm) of nitrogen as oxygen gas. That is, in the conventional application apparatus, several tens to several hundreds ppm of nitrogen dioxide and NOx such as nitrogen monoxide and the like corresponding to several% to several tens% of the added nitrogen amount are generated by discharge when ozone is generated. Since ozone gas containing NOx gas is used, there is a problem that the removal measures of NOx with high environmental load are insufficient.
- GHG greenhouse gases
- SOx sulfur oxides
- VOCs volatile organic compounds
- NOx nitrogen oxides
- the present invention solves the above problems and aims to realize downsizing of the system configuration, more preferably, an ozone gas utilization system which aims to reduce the amount of NOx contained in the ozone gas (purpose for environmental improvement).
- the two main purposes (invention) consist of the purpose to be provided.
- An ozone gas utilization system comprises a raw material gas supply device for supplying a raw material gas containing oxygen gas, an ozone generation device for generating ozone gas from the raw material gas, and ozone from a substance before ozone treatment using the ozone gas.
- an application device for performing an ozone utilization process for obtaining a post-treatment substance wherein the ozone generating apparatus comprises: an inverter power supply for generating a supply high frequency voltage; and a resonant transformer unit for boosting the supply high frequency voltage to obtain a boosted high frequency voltage.
- an ozone gas generator which receives the boosted high frequency voltage received from the resonant transformer as an operating voltage and generates the ozone gas having an ozone concentration of 200 g / m 3 or more from the source gas, the application device comprising Characterized in that the ozone gas is received under a pressure environment of 0.2 MPa or more There.
- the application device receives the ozone gas at a relatively high ozone concentration of 200 g / m 3 or more. Therefore, the ozone gas supply amount itself can be reduced to make the device configuration compact.
- the application apparatus receives ozone gas from the ozone generator under a pressure environment of 0.2 MPa or more, the processing capacity of the ozone utilization process can be improved.
- FIG. 1 is an explanatory view showing a configuration of an ozone gas utilization system according to an embodiment of the present invention.
- FIG. 2 is a graph showing the effect of the ozone gas utilization system according to the first embodiment. Specifically, the relationship between the concentration of ozone to be injected and the water purification capacity of ozone between the ozone generator 100 and the application apparatus 200 is shown.
- FIG. FIG. 3 is an explanatory view showing an internal configuration of the ozone generator 100 used in the ozone gas utilization system of the first embodiment.
- 4 and 5 are explanatory views showing the details of the internal structure of the load resonance type high frequency step-up transformer 13 shown in FIG. 3.
- FIG. 5 shows the structure of the transmolded coil 132, and FIG. Shows the structure excluding.
- the ozone generator 100 shown in FIG. 1 is a nitrogenless ozone generator capable of generating high concentration ozone gas containing no NOx gas by making the discharge surface material in the ozone generator described later a specific photocatalyst material. It becomes. That is, the nitrogen-less ozone generator can extract high-concentration ozone gas even if it uses oxygen gas without nitrogen addition or high-purity oxygen gas of 99.99% or more as the source gas. It is a generator.
- the ozone gas utilization system of Embodiment 1 includes an ozone generator 100, an application device 200, a raw material gas purification device 300, a power supply device 400, an exhaust ozone decomposition device 500, and an ozone device instruction and status display unit 16 is included as a main component.
- the application device 200 performs ozone utilization processing using the ozone gas 62 generated by the ozone generator 100.
- the ozone utilization process is a process for obtaining the post-ozone treatment substance 92 from the pre-ozone treatment substance 91 using ozone gas.
- the raw material gas purification apparatus 300 is an apparatus of a raw material supply system that supplies oxygen gas having a purity of 99.99% or more to the ozone generator 100 as a raw material gas.
- the power supply device 400 supplies the ozone generator 100 with a power supply 70 serving as an operation power of the ozone generator 100.
- the exhaust ozonolysis apparatus 500 is an apparatus that receives the exhaust ozone gas 63 discharged after being used for the ozone utilization processing of the application device 200, decomposes the exhaust ozone gas 63, and obtains the processed gas 64.
- the ozone generator 100 includes an ozone generator 11, an inverter power supply 120, and a load resonance type high frequency step-up transformer 13 as main components.
- the inverter power supply apparatus 120 is an apparatus for performing electric control of high frequency voltage to the ozone generator 11, and includes a converter / inverter unit 12 as a main power supply configuration and a high frequency voltage 71 (supply high frequency voltage supplied by the converter / inverter unit 12). And a control circuit unit 14 for controlling the
- the high frequency voltage 71 generated by the converter / inverter unit 12 of the inverter power supply device 120 is boosted by the load resonance type high frequency step-up transformer 13 and applied to the ozone generator 11 as a boosted high frequency voltage 72. Therefore, the ozone generator 11 can perform ozone gas generation processing with the boosted high frequency voltage 72 as the operation voltage, and can generate the ozone gas 62 from the high purity oxygen gas 61 which is the source gas.
- the ozone device instruction / state display unit 16 instructs the control contents of the control circuit unit 14 and displays and monitors the control state.
- the application device 200 includes an ozone gas treatment reactor 21, an ozone concentration detector 81, a sensor 82, and an ozone treatment substance / storage unit 22 as main components.
- the ozone gas treatment reactor 21 receives ozone gas 62 from the ozone generator 100, and uses ozone gas 62 to perform water purification treatment with ozone to the treated water which is the pre-ozone treatment substance 91, the ozone treated substance 92 (ozone treated water) obtain. Thus, the ozone gas treatment reactor 21 executes the water purification treatment as the ozone utilization treatment.
- the post-ozone treatment substance 92 is temporarily accumulated in the ozonation substance / accumulation unit 22 and finally output as the activated carbon treated water 93.
- the ozone concentration detector 81 detects the concentration of the ozone gas 62, and the sensor 82 detects the processing state of the post-ozone treatment substance 92.
- the time during which the treated water and ozone in the treatment tank of the ozone gas treatment reactor 21 come in contact with the ozone injection rate to the treated water which is the pre-ozone treatment substance 91 is 3 mg / L constant condition.
- the ozone contact time (ozone retention time) which is the above is set to the processing tank volume which can secure 10 min.
- FIG. 2 shows the ozone concentration (characteristic c1000, characteristic c2000) injected from the conventional ozone generation device and the ozone generation device 100 of the first embodiment under the above setting, and the water purification capacity (characteristic w1000) by ozone associated therewith. , A characteristic w 2000) is shown.
- the horizontal axis represents the injection flow rate (L / min) of ozone gas supplied from the ozone generator, and the vertical axis represents the water processing capacity by ozone gas (m 3) performed using the processing tank of the ozone gas treatment reactor 21. Per day) and the injected ozone concentration (g / m 3 ).
- the injected ozone concentration characteristic c1000 shows the injected ozone concentration characteristic with respect to the ozone gas flow rate in the conventional ozone generator
- the injected ozone concentration characteristic c2000 shows the injected ozone concentration characteristic with respect to the ozone gas flow rate in the ozone generator 100 of this embodiment. It shows.
- the water purification capacity characteristic w1000 indicates the water purification capacity characteristic of the conventional application device to the ozone gas (ozone gas flow rate) supplied from the conventional ozone generator
- the water purification capacity characteristic w2000 is a nitrogen-less ozone generator
- the water purification capability characteristic of the application apparatus 200 with respect to the ozone gas (ozone gas flow rate) supplied from 100 is shown.
- FIG. 2 is a graph showing the characteristics of the water purification capacity with respect to the flow rate of the ozonized gas injection gas from the ozonizer supplied to the application device.
- the injected ozone concentration characteristic c 1000 represents the ozone injection concentration in the conventional ozone generator, and in the conventional ozone generator, the ozone concentration is usually 180 g / m 3 to 120 g depending on the flow rate of the injected ozone gas. It shows the characteristic of lowering to / m 3 .
- the ozone generator 100 of this embodiment implanted into the ozone gas flow rate, low flow in a large flow rate range from a value close to about 400 g / m 3 ozone concentration (gas flow rate of about 65SLM (Standard Liter / Min It is possible to supply an ozone injection concentration of about 200 g / m 3 )))).
- gas flow rate of about 65SLM Standard Liter / Min It is possible to supply an ozone injection concentration of about 200 g / m 3
- the water purification capacity characteristic can be improved to the water purification capacity characteristic w2000 as compared with the water purification capacity characteristic w1000.
- the flow rate of the ozone gas is reduced and the amount of power required by the ozone generator 11 is also reduced. it can.
- the processing tank volume is fixed in which the ozone time retained in the ozone gas processing reactor 21 is fixed to a fixed value (for example, 10 minutes), the processing tank volume can be reduced as the ozone gas injection flow rate decreases.
- the water purification capacity is set to 3000 m 3 / day, and a conventional ozone generator requires an ozone gas flow rate of 48 L / min at PA point.
- the ozone generator 100 (ozone generator 11) of this embodiment is used, the ozone generation efficiency is 21 L / min at the PB point because it has a higher ability than that of the conventional ozone generator.
- the ozone gas flow rate of about 44% is sufficient as compared, and the power input to the ozone generator 11 can be reduced accordingly.
- the processing tank volume in the ozone gas processing reactor 21 of the application apparatus 200 can be reduced to a smaller processing tank volume as the ozone gas injection flow rate decreases if the purification capacity is constant.
- the ozone generator 100 can increase the injected ozone concentration characteristic c 2000 more than the injected ozone concentration characteristic c 1000 of the conventional ozone generator, power saving of the electric power for the ozone generator 100 can be achieved in the application device 200.
- the processing tank volume of the ozone gas processing reactor 21 can be miniaturized.
- (Ozone generator 11) 3 to 5 show the detailed configurations of the inverter power supply device 120 and the load resonance type high frequency step-up transformer 13 in the ozone generator 11 in which the ozone generator 100 is miniaturized.
- the ozone generator 11 is a nitrogenless ozone generator capable of generating high concentration ozone gas even when oxygen gas not containing nitrogen gas is used as a source gas by using a discharge surface material suitable for an ozone generation mechanism.
- the short gap is implemented with a gap length of 0.4 mm or less to realize high electric field discharge, and the discharge surface is not shown in FIG.
- the ozone generation amount can be significantly increased, and the high concentration ozone generator can generate ozone with high efficiency.
- the ozone generator 11 realizes a short gap discharge as described above, as compared to the conventional ozone generator (cylindrical ozone generator), and a multistage laminated structure of flat plate cells in which the water cooling structure of the cell is devised
- the volume of the generator is about 1/3, and the concentration of ozone to be taken out is about 2 to 3 times, and the amount of source gas supplied to the generator and the amount of discharge power injected It is a compact ozone generator that reduces the
- the inverter power supply device 120 applies the ozone generator 11 by increasing the frequency (about ten or more kHz, at least 10 kHz or more) to about five times higher than the operating frequency several kHz of the conventional ozone generator power supply.
- the cross-sectional area of the transformer core 131 can be reduced by lowering the voltage and lowering the magnetic flux density of the transformer core 131 of the load resonant type high frequency step-up transformer 13 provided at the output portion of the inverter power supply device 120.
- the load resonance type high frequency step-up transformer 13 can be realized with a configuration smaller than the transformer of the ozone generator.
- the configuration of the load resonance type high frequency step-up transformer 13 is as shown in FIG. 4 and FIG.
- the transformer core 131 can reduce the high frequency eddy current loss in order to boost the high frequency voltage 71 (supply high frequency voltage) to obtain a high frequency boosted voltage (high frequency high voltage) 72.
- It is a body or ferrite core magnetic material material, and is a magnetic material configuration (magnetic core) of a transformer.
- the magnetic core has a magnetic path length formed by inserting a trans gap spacer 133 between a pair of transformer cores 131 having an E-shaped cross section.
- the transformer mold coil 132 is a mold resin in which a secondary winding as a secondary coil is overlapped and wound on a primary winding (v1) as a primary coil and further integrated.
- v1 primary winding
- the space between the coils is covered with the insulating resin, so that insulation measures are taken so as not to cause high frequency discharge due to the high frequency voltage between the coils, and the integrated transformer molded coil for high frequency is configured.
- the load capacitance C0 of the ozone generator 11 and the excitation inductance Lb of the transformer body itself for high-frequency boosting resonate at a high frequency operating frequency f controlled by the converter / inverter unit 12.
- the function of improving the power factor of the load in the transformer itself is also added.
- the load resonance type high frequency step-up transformer 13 as a multi-functionalized transformer, the resonance function and the high frequency height can be realized only by the load resonance type high frequency step-up transformer 13n having a very small configuration without separately providing a resonance reactor It realizes the voltage conversion function.
- the load resonance type high frequency step-up transformer 13 having this multi-function has a pair to adjust to an excitation inductance Lb smaller than the excitation inductance of the conventional commercially available general step-up transformer function to resonate with the load.
- the trans gap spacer 133 is interposed between the transformer cores 131 of FIG.
- the pair of transformer pressing plates 134 are provided to support and fix the transformer core 131 and the transformer mold coil 132 from both sides in the left and right direction in FIG. 4, and the pair of transformer pressing plates 134 are fixed by bolts.
- the transformer core 131 and the transformer mold coil 132 are stably fixed inside the pair of transformer pressing plates 134.
- space for transformer cooling cavity 136 is provided on both sides in the vertical direction of FIG. 4 for air cooling the loss generated by the transformer main body, and the heat of the transformer main body is generated by flowing cooling air 69 around the transformer main body. It is cooling.
- the air 69 is drawn from a slit provided on a unit surface (not shown) constituting the metal case of the ozone generator 100, and the air 69 is made to flow into the transformer cooling cavity 136 and exhausted by the fan 137 to thereby
- the transformer molded coil 132 and the transformer gap spacer 133 are cooled by air cooling.
- the load resonance type high frequency step-up transformer 13 is provided with the trans gap spacer 133, there is a leakage flux in which a portion of the magnetic flux leaks into the space portion formed by the trans gap spacer 133.
- the leakage flux interlinks with the case of the ozone generator 100, and an eddy current flows in the case 100 to generate heat in the case.
- the metallic conductor / magnetic shield cover 135 is configured to cover.
- a commercially available oxygen gas cylinder is usually used as a source gas supply source.
- ozone gas as a treatment equipment (application equipment) using ozone gas in remote areas or remote islands, water treatment of water and sewage of large passenger ships, and container water treatment of container ships and crude oil tankers, replacement of commercially available oxygen gas cylinders is difficult .
- the source gas purification apparatus 300 serving as a source gas supply source is compact as described in detail later.
- a combination of an oxygen supply source (oxygen production unit) and an oxygen purifier that removes nitrogen from oxygen gas is employed.
- an oxygen PSA pressure swing adsorption
- a catalytic small-size cold adsorption type generator can be considered.
- the ozone generating apparatus 100 generates ozone at a high concentration of 200 g / m 3 or more under a pressure environment of 0.2 MPa or more with a discharge pressure of ozone gas of 0.2 MPa or more.
- the source gas purification apparatus 300 has a structure in which an oxygen supply source (oxygen production apparatus) and an oxygen purifier that removes the amount of nitrogen are combined with oxygen gas is shown, ozone may be used even if only the oxygen supply source (oxygen production apparatus).
- the generator 100 can generate the required ozone gas.
- ozone gas as a treatment apparatus (application apparatus) using ozone gas in remote areas or remote islands, water treatment of water and sewage of large passenger ships, and ballast water treatment of container ships and crude oil tankers.
- the power supply device 400 a small-scale power supply device that generates several hundred watts or more of solar power, wind power, geothermal energy, hydropower, wave power, small-scale renewable energy source by bioelectric power generation (renewable energy power generation)
- a configuration is conceivable that utilizes the power supply from the If the power supply device 400 is configured using a renewable energy source, the application device 200 for performing small-scale water treatment and the like using ozone gas can be easily operated even in remote areas, remote islands, ships and the like. You will be able to use it effectively.
- the ozone generator 100 can implement
- Embodiment 1 can be used as an environmental improvement system suitable for each region.
- the ozone generator 100 In order to miniaturize the ozone generator 100, select a good material for the generation of ozone on the discharge surface, and set the gap length of the discharge space to a short gap of 0.2 mm or less in the ozone generator 11. To increase the ozone generation amount (generation efficiency), thinly form an electrode having a cooling function (not shown) by water cooling, and form a multi-layered structure of thin discharge cells formed of an electrode and a dielectric. It realizes the generation of ozone that is nitrogen-less in a very compact system configuration.
- the load resonance type high frequency step-up transformer 13 shown in FIG. 3 generates a high frequency voltage 71 in which the power supply from the power supply device 400 is increased to several tens kHz by the converter / inverter unit 12 of the inverter power supply device 120.
- a high frequency high voltage step-up high frequency voltage 72 boosted by the load resonance type high frequency step-up transformer 13 is applied to the ozone generator 11.
- the voltage value Vd of the high frequency voltage 71 required to be output from the inverter power supply 120 for supplying the predetermined discharge power Wd to the ozone generator 11 is lowered.
- the voltage supplied to the load resonance type high frequency step-up transformer 13 to a higher frequency f, the magnetic flux density in the transformer core 131 can be reduced in proportion to the frequency, and the cross sectional area of the transformer core 131 can be reduced.
- the volume of the body itself can be made compact.
- the load of the ozone generator 11 is constituted by the ozone generator cell in a short gap discharge space, the load impedance is very low in the load power factor because the capacitive load occupies most of the load impedance (about several tens of percent or less) ) Becomes a load. For this reason, it is necessary to enlarge the transformer itself according to the load capacity as the load capacity (kVA) becomes larger than the active power to be supplied.
- a multifunctional type load having a function of resonating between the load capacity C0 of the ozone generator 11 and the excitation inductance Lb of the load resonance type high frequency step-up transformer 13 itself.
- a resonant high frequency step-up transformer 13 is configured.
- the load resonance type high frequency step-up transformer 13 By making the load resonance type high frequency step-up transformer 13 multifunctional, the reactive power of the load can be recovered by the transformer main body, and the transformer main body itself can be manufactured so as to have a power transfer function of only the effective power.
- the multifunctional load resonance type high frequency step-up transformer 13 has a very compact structure.
- the load resonance type high frequency step-up transformer 13 is configured as a multi-function type as described above, the function and resonance function of the load side transformer are load resonance type.
- the load resonance type high frequency step-up transformer 13 with a very small structure can be configured, and as a result, the small-sized ozone generator 11 can be realized.
- the compacted load resonance type high frequency step-up transformer 13 has a new problem to be solved. That is, since the transformer gap spacer 133 needs to be provided in the magnetic flux forming path of the transformer core 131 in order to obtain the exciting inductance Lb of the transformer itself that resonates with the load capacitance C0 at a high frequency operating frequency of several tens kHz, In the space portion formed by the gap spacer 133, there is a problem that a part of the magnetic flux leaks into the space.
- the space around the installed load resonance type high frequency step-up transformer 13 is opened at a distance of about 40 mm or more in order to suppress the eddy current heat generation, the leakage flux interlinking with the case is weakened.
- the space around the transformer 13 has to be a case of the ozone generator 100 having a distance of about 40 mm or more, and there is a problem that the case of the ozone generator 100 itself becomes large.
- the load resonance type high frequency step-up transformer 13 is configured to cover the periphery of the transformer core 131 with a conductor / magnetic shield cover 135 made of metal such as aluminum or copper having a very low resistivity. There is. For this reason, due to the presence of the conductor / magnetic shield cover 135, the leakage flux from the transformer gap spacer 133 is an eddy current loss generated in the conductor / magnetic shield cover 135 by interlinking with the conductor / magnetic shield cover 135. The leakage flux from the conductor / magnetic shield cover 135 to the outside is weakened. As described above, by providing the conductor / magnetic shield cover 135, heat generation due to leakage magnetic flux and magnetic shielding can be performed, so that the ozone generator 100 (ozone generator 11) itself can be miniaturized.
- the load resonance type high frequency step-up transformer 13 is supplied with the high frequency voltage 71 between v1 and v2 of the primary coil of the transformer molded coil 132 from the inverter power supply 120, and the load of the ozonizer 11 is between HV and LV of the secondary coil.
- a boosted high frequency voltage 72 having an operating frequency f boosted to a high voltage is output.
- the load resonance type high frequency step-up transformer 13 has two transformer cores 131 of E type magnetic material, a transformer gap spacer 133, a primary coil of a transformer and a secondary coil.
- the integrated high frequency transformer mold coil 132 is used as a transformer main body.
- the transformer core 131, the transformer mold coil 132 and A transformer main body composed of the transformer gap spacer 133 is configured. That is, the transformer molded coil 132 is fitted into the pair of E-shaped transformer cores 131 to form a transformer main body.
- a pair of transformer pressing plates 134 is provided so as to press the side surfaces of the pair of transformer cores 131 from both sides in the left and right direction of FIG. 4 and the pair of transformer pressing plates 134 and 134 are fixed by bolts not shown.
- the transformer body (the transformer core 131, the transformer mold coil 132, and the transformer gap spacer 133) is fixed between the pair of transformer pressure plates 134, 134.
- the conductor / magnetic shield cover 135 prevents the eddy current heating phenomenon due to the leakage flux from the transformer main body while securing the transformer cooling cavity 136 between the transformer main body and both sides in the vertical direction of FIG. It is fixed to the plate 134.
- the load resonance type high frequency step-up transformer 13 can be made to resonate between the load capacity C0 of the ozone generator 11 and the excitation inductance Lb of the transformer main body at the high frequency operating frequency f, thereby improving the power factor of the load with a low power factor. It is like that. Therefore, in order to match the excitation inductance Lb of the transformer itself corresponding to the load capacitance C0 to the resonance inductance value, the transformer gap spacer 133 is provided, and the spacer thickness is in the range of about 1 mm to 5 mm. The excitation inductance Lb is adjusted so as to have a resonance inductance value.
- a flux leakage phenomenon occurs in which a part of the magnetic flux of the closed loop of the transformer core 131 leaks around the transformer gap spacer 133 forming the transformer body. Due to the eddy current heating phenomenon due to the magnetic flux leakage, if there is a metallic unit surface constituting the housing case of the nitrogenless ozone generator 100 within 40 mm from the transformer main body, the eddy current generated in the unit surface by this leakage flux The storage case itself is heated by Joule heat.
- a metallic conductor / magnetic shield cover 135 having conductivity around the trans gap spacer 133 forming the transformer main body. are provided at the top and bottom in the figure.
- the conductor / magnetic shield cover 135 is provided around the transformer molded coil 132, the leakage flux leaking from the portion where the trans gap spacer 133 of the transformer core 131 is formed is linked by the conductor / magnetic shield cover 135. Be done. Therefore, although eddy current flows in the conductor / magnetic shield cover 135, the conductor / magnetic shield cover 135 is made of a material having a very high conductivity such as aluminum or copper. Can be extremely reduced, and the heat generation of the conductor / magnetic shield cover 135 itself can be extremely reduced. Furthermore, even if the metallic unit surface constituting the housing case of the ozone generator 100 is brought close to the transformer main body by several mm, the unit surface does not generate heat due to the presence of the conductor / magnetic shield cover 135.
- the conductor / magnetic shield cover 135 can indirectly exhibit not only the heat generation due to the leakage flux phenomenon but also a magnetic shield effect to a certain extent.
- the load resonance type high frequency step-up transformer 13 itself generates heat as copper loss of the transformer mold coil 132 and iron loss of the transformer core 131, about several percent of the power transmitted to the load side does not cool the transformer itself. If it is left at the temperature, it will be hot due to the heat capacity of the transformer itself. For this reason, around the transformer main body, it is necessary to flow a wind with a predetermined air volume and to cool the calorific value of several% of the transformer main body by air cooling. Therefore, a transformer cooling cavity 136 is provided between the conductor / magnetic shield cover 135 and the transformer body, and the cooling wind 69 is allowed to flow through the transformer cooling cavity 136 to enable proper cooling of the transformer body. .
- the conductor / magnetic shield cover 135 is provided with a notch for securing the transformer cooling cavity 136, but not on the conductor / magnetic shield cover 135 but on the surface of the transformer restraining plate 134.
- a cooling structure may be provided in which a notch or the like is provided and a space corresponding to the transformer cooling cavity 136 is provided.
- the load resonance type high frequency step-up transformer 13 itself is cooled by air cooling and a small multifunctional load resonance type high frequency step-up transformer 13 is shown.
- substantially the same small load resonance type high frequency step-up transformer 13 can be realized even if cooling is performed by flowing a refrigerant, and as a result, a compact ozone generator 11 can be realized.
- the transformer molded coil 132 in which the primary coil and the secondary coil are wound in layers and the transformer mold coil 132 inside the E type transformer core 131 An iron core (core) type transformer body is shown, but the mold coil of the primary coil and the mold coil of the secondary coil are separated, and the mold coil of the primary coil and the mold coil of the secondary coil are respectively divided into both cores of the U-shaped core.
- core internal core
- the outer core type transformer main body Comparing the outer core type transformer body with the inner core type transformer main body, the outer core type transformer main body is miniaturized because the transformer molded coil 132 constituting the transformer main body is one. It is desirable that the heat generation of the transformer core 131 can be easily cooled by the above-described air-cooling.
- the inverter power supply device 120 generates the high frequency voltage 71 of at least 10 kHz or more, and the load resonance type high frequency step-up transformer 13 which is the resonance type transformer unit is the high frequency voltage 71.
- a transformer main body (a transformer core 131, a transformer mold coil 132 and a transformer gap spacer 133) for obtaining a boosted high frequency voltage 72.
- the inverter power supply device 120 and the load resonance type high frequency step-up transformer 13 can be miniaturized, so that the ozone generator 11 in the ozone generator 100 can be reduced. Can be made compact.
- the leakage magnetic flux becomes large compared to a normal transformer in order to enlarge the space portion.
- the transformer main body is secured so that the transformer cooling cavity 136 which is a cooling space is secured between the transformer main body and the eddy current heating phenomenon due to the magnetic flux leakage of the transformer main body outside the load resonance type high frequency step-up transformer 13.
- a conductor / magnetic shield cover 135 which is a metal cover member covering the above is provided to shield the magnetic flux from the transformer to suppress the leakage flux.
- the load resonance type high frequency step-up transformer 13 has the conductor / magnetic shield cover 135, the influence of the magnetic flux leakage phenomenon including the heat generation of the eddy current to the outside is effectively achieved even when the miniaturization is attempted. It can be suppressed.
- the heat generation of the transformer itself can be effectively cooled and removed.
- ozone gas source is a dry air source, a general oxygen gas source which is not high purity oxygen, or oxygen gas with a trace amount of nitrogen gas added as source gas, dielectric barrier discharge or surface discharge, etc.
- the raw material gas contains 75% (750000 ppm) of nitrogen in the dry air source, and the ozone generation amount is only about 1/4 or less of that of the ozone generator using oxygen gas as the raw material gas. .
- a cylindrical ozone gas generator using a dry air source as a raw material gas contains a large amount of nitrogen gas, so the concentration of ozone to be output is low, and usually a few tens of g / m 3 to obtain a desired ozone generation amount
- the amount of power supplied to the ozone generator and the amount of raw material gas tend to be large, and the device configuration of the application device that executes ozone utilization processing using ozone gas is also large.
- the raw material gas is a general oxygen gas source other than high purity oxygen
- a slight amount of nitrogen gas usually 0.1% (1000 ppm) to 1% (10000 ppm) nitrogen gas, is contained in the raw material gas. .
- the source gas containing 1% nitrogen gas in oxygen gas is received, and several tens PPM to several hundreds PPM of NO x gas is generated by dielectric barrier discharge.
- high concentration ozone is generated as a result of the chemical reaction with the body barrier discharge.
- a source gas containing 1% nitrogen gas in oxygen gas for example, 150 g / m 3 (70,000 PPM) depending on the electric field strength of discharge. It has been found that several tens of ppm to hundreds of ppm of NOx gas are also generated in the high concentration ozone gas.
- An application device using such ozone gas can effectively execute ozone utilization treatment, and while the treatment effect is sufficient, gas with several hundreds ppm of NOx concentration is also generated from the ozone generator, and this by-product NOx Gas is applied to substances with high environmental impact, and decomposition processing is difficult, and it will be mixed with substances after ozonization, or discharged to the atmosphere as exhaust ozone.
- the generated gas of NOx concentration of several tens PPM to several hundreds PPM combines with water to form nitric acid (HNO 3 ).
- the first premise is to use nitrogen gas free high purity oxygen gas not containing nitrogen gas as raw material gas for the realization of nitrogen-less ozone generation with a small environmental load in which the generation of NOx is suppressed.
- a conventional, commonly used ozone generator is based on the premise that it contains nitrogen gas of about 1% (about 10000 PPM) or more, and oxygen gas that does not contain nitrogen gas generates high concentration ozone gas I could not. For this reason, it was not an ozone generator which secures a predetermined amount of ozone generation without generating NOx.
- the ozone gas can be generated from the source gas not containing nitrogen gas, and particularly high. Since ozone gas having a concentration can be generated, it is indispensable to realize an ozone gas utilization system using ozone gas with a small environmental load.
- the ozone gas supplied to the application device that performs water purification processing as ozone utilization processing which is usually used, has a supply pressure of less than 0.15 MPa and an ozone concentration of several tens of g / m 3 to less than 180 g / m 3 Therefore, it is difficult to make the application device small (see FIG. 2).
- FIG. 6 is an explanatory view showing a detailed configuration of the ozone gas treatment reactor 21 in the application device 200 shown in FIG.
- the ozone gas processing reactor 21 performs water cleaning processing using ozone gas as ozone utilization processing.
- Treated water which is the pre-ozone treated substance 91 is injected from the lower part of the ozone gas treating reactor 21, and after the water washing treatment is performed on the treated water, the ozonated water subjected to the water washing treatment from the upper part is the post ozonized substance 92 Discharged as
- An ozone space in which ozone gas is kept at a constant pressure P1 is provided at the bottom of the ozone gas treatment reactor 21, and the ozone gas generated by the ozone generator 100 is supplied to the ozone space.
- the aeration tube has fine holes opened at the bottom of the ozone gas treatment reactor 21.
- the supplied ozone gas is supplied as ozone gas from the aeration tube to the water portion in the ozone gas treatment reactor 21 as innumerable bubbles, Water purification treatment (treatment including ozone oxidation chemical treatment and ozone sterilization treatment) is performed by contact between the ozone gas in the interior and treated water to purify the treated water that is the pre-ozone treatment substance 91 and perform ozone treatment Obtained substance 92.
- the contact time Tmin minute
- Tmin minute
- ozone injection amount supplied to the treated water is determined by the volume Vcm 3 of ozone gas flow rate Q and the ozone gas processing reactor 21.
- the supply pressure supplied to the ozone gas treatment reactor 21 is less than 0.15 MPa, and the ozone concentration is 120 g / m 3-as shown by the injected ozone concentration characteristic c 1000 in FIG. Although it was less than 180 g / m 3 , in the ozone generator 100 of this embodiment, since the ozone generator 11 is used, the ozone concentration is 200 g / m 3 to 400 g / m 3 (see injected ozone concentration characteristic c2000) ) Can be supplied to the ozone gas treatment reactor 21.
- the ozone gas flow rate Q can be made much smaller (for example, point PA to point PB in FIG. 2) to supply a predetermined amount of ozone gas. For this reason, if the ozone residence time 10 minutes is made constant if the ozone gas flow rate Q is reduced, the formation height of the ozone gas processing reactor 21 (for the processing tank therein) can be made lower than in the conventional configuration, and the cross sectional area is also reduced. Therefore, the volume of the treatment tank can be reduced to make the ozone gas treatment reactor 21 more compact and improve the water purification treatment capacity.
- the ozone gas pressure P1 supplied can be increased, bubbles in the treated water can be reduced by increasing the exhaust pressure P2 of the ozone gas treatment reactor 21 with the valve 631 to further enhance the contact reaction between the ozone gas and the treated water.
- the processing capacity of the ozone gas treatment reactor 21 can be improved, and the effect of further improving the performance than the water purification capacity characteristic w2000 shown in FIG. 2 can be expected. Therefore, it is desirable to set under the pressure environment which made ozone gas pressure P1 0.2 Mpa or more.
- the application device 200 constituting the ozone gas utilization system of the present embodiment receives ozone gas at a relatively high ozone concentration of 200 g / m 3 or more, the ozone gas supply amount itself is reduced to make the device configuration compact.
- the application apparatus 200 receives ozone gas from the ozone generator 100 under an environment of an ozone gas pressure P1 of 0.2 MPa or more, it is possible to improve the water purification capacity in the water purification process which is the ozone utilization process.
- FIG. 7 is an explanatory view showing the details of the raw material gas purification apparatus 300 used in combination with the ozone generator 100.
- a commercially available oxygen cylinder is used as a source gas for the source gas, but in order to make the ozone gas utilization system optional in the field of use, oxygen gas is produced from air or water in the atmosphere, and the moisture and nitrogen gas of the gas are used. It is desirable to be configured to remove
- the raw material gas purification device 300 which is a raw material gas supply device, is configured to compress the air in the atmosphere and concentrate the oxygen gas, and the concentrated oxygen gas obtained from the oxygen PSA device 32 is high.
- the combined structure with the high purity gas purifier 33 (oxygen purifier) which converts into purity oxygen gas is shown. It is desirable to use an oxygen PSA device 32 and a high purity gas purifier 33 each having a small capacity as far as possible.
- the oxygen PSA unit 32 functions as an oxygen extraction unit for extracting oxygen gas from the air, and the high purity gas purifier 33 further removes trace impurities other than oxygen gas from the oxygen gas extracted by the oxygen PSA unit 32. It functions as an oxygen gas purifier that produces pure oxygen gas.
- the oxygen PSA device 32 from the atmosphere is shown, but instead of the oxygen PSA device 32, an oxygen gas production device for extracting oxygen gas from water using electrolysis or catalytic action is used Also good. That is, the oxygen gas production device functions as an oxygen extraction device for extracting oxygen gas from water.
- the raw material gas purification apparatus 300 which is the raw material gas supply apparatus used in the ozone gas utilization system of the present embodiment is configured by the combination of the oxygen PSA apparatus 32 and the high purity gas purification apparatus 33 It can be used without.
- ozone (high concentration ozone) gas can be efficiently generated with a small flow rate of raw material gas with the small-sized ozone generator 100, the application device using the ozone gas can be miniaturized, and oxygen gas which is a small flow rate of raw material gas can be produced.
- the apparatus configuration of the source gas purification apparatus 300 for generating and purifying the oxygen gas can also be reduced, and the entire ozone gas utilization system can be miniaturized.
- the source gas purification apparatus 300 is provided with a high purity gas purifier 33 which is a nitrogen removing apparatus in order to utilize NOx-less ozone gas having a small environmental load, and the ozone generator 11 is miniaturized.
- a high purity gas purifier 33 which is a nitrogen removing apparatus in order to utilize NOx-less ozone gas having a small environmental load
- the ozone generator 11 is miniaturized.
- the source gas purification apparatus 300 only the oxygen PSA apparatus 32 may be used, and the combination with the small-sized ozone generator 11 may be used.
- the electrodes of FIG. 11 and FIG. 12 are changed when the test conditions such as source gas species, discharge surface state and discharge surface material are varied. 13 and the rise response of the ozone concentration generated corresponding to the voltage [inverter output (INV. Output)] applied to the electrodes in the discharge surface material configuration (the test ozone generator I, II). It measured and clarified in FIG. As a result, the accuracy of the disclosure content of Patent Documents 1 to 7 was re-verified. The details will be described later as an explanation of the measurement results in FIGS. 13 and 14.
- FIG. 11 and FIG. 12 are explanatory views schematically showing a test configuration by the electrodes of the ozone generator, the discharge surface material configuration, and the ozone concentration detector for elucidating a mechanism capable of generating high concentration ozone gas.
- FIG. 11 shows a test configuration of an ozonizer in which the discharge surface material in the generator is composed of a passive insulator film 2104a having no chemical change due to discharge light etc.
- FIG. 12 shows light absorption by discharge light etc. 12 shows a test configuration of an ozone generator configured with a photocatalyst insulating film 2104 b in which the material surface is in an activated state.
- Td (s) shown in FIG. 11 and FIG. 12 shows the ozone concentration detection delay time determined by the gas pipe volume from the ozone generator to the ozone concentration detector 81 and the gas flow rate Q at the time of the test.
- the rising characteristics of the high voltage detected from the output signal (high voltage AC voltage) SA are shown by the output signal (high voltage AC voltage) characteristic A in FIG. 13 and FIG. Therefore, when considering the concentration rise response B corresponding to the output signal (high voltage AC voltage), the ozone concentration detection delay time Td is determined from the concentration rise response characteristic B (t) measured by the ozone concentration detector 81.
- the concentration rise response characteristic B (t-Td) obtained by subtracting (s) represents the ozone concentration rise response characteristic of the ozone generator itself.
- the ozone concentration rise response characteristics B (t-Td) of the ozone generator itself in the discharge surface state in the discharge surface material configuration shown in FIGS. 11 and 12 and the ozone generator itself by the difference between the gas type and the discharge surface material The ozone concentration rise response characteristic B (t-Td) of the above is shown by B1, B2, B3 in FIG. 13 and B10, B20, B30 in FIG.
- the characteristics when the conditions supplied to the ozone generator of FIG. 11 and FIG. 12 are set as follows are the characteristics of FIG. 13 and FIG. Supply the gas flow rate of 1 L / min as the raw material gas, input 500 W of the discharge output injected into the ozone generator, and consider the rise response A of the output signal SA injected and the ozone concentration detection delay time Td (s)
- the ozone concentration rise characteristic B (t-Td) is graphed on a logarithmic time axis.
- the ozone concentration detection delay time Td (s) for concentration detection by the ozone concentration detector 81 from the ozone generator when flowing at a gas flow rate of 1 L / min was 4.16 (s).
- FIG. 13 is a graph showing B1, B2, and B3 of the ozone concentration generation rising characteristics in the ozone generator (FIG. 11) in which the discharge surface material is constituted by the non-conductive insulator film 2104a.
- FIG. 14 shows the ozone concentration generation rising characteristics B10 and B20 when the gas type is changed in the ozone generator (FIG. 11) in which the discharge surface material is composed of the nonconductive insulator film 2104a, and the discharge surface material is photocatalytically isolated It is a graph which shows B30 of the ozone concentration production
- the high potential side (HV) electrode is constituted by the high voltage electrode 2101 and the discharge surface is constituted by the dielectric 2103 and the low potential side (LV) electrode
- the low voltage electrode 2102 and the discharge surface are constituted by a nonconductive insulator film 2104a.
- a discharge space 2105 is formed between the dielectric 2103 and the nonconductive insulator film 2104 a on the discharge surface facing each other.
- the high potential side (H.V) electrode is constituted by the high voltage electrode 2101 and the discharge surface is a dielectric 2103 and the low potential side (L.V)
- the low-pressure electrode 2102 and the discharge surface of the electrode are formed of the photocatalyst insulating film 2104 b.
- a discharge space 2105 is formed between the dielectric 2103 and the photocatalyst insulating film 2104 b on the discharge surface facing each other.
- the high voltage AC power supply 1200 applies an AC voltage between the high voltage electrode 2101 and the low voltage electrode 2102. Therefore, a dielectric barrier discharge is formed in discharge space 2105 by applying an alternating voltage from high voltage AC power supply 1200 between high voltage electrode 2101 and low voltage electrode 1202 through dielectric 2103. Along with this, by supplying the source gas 610 to the discharge space 2105, a high concentration ozone gas 62 is generated and output to the outside.
- An ozone concentration detector 81 is provided at a predetermined length of piping from the ozone generator, and the concentration of the high concentration ozone gas 62 generated in the ozone generator is detected by the ozone concentration detector 81.
- the rise response B of the high concentration ozone gas can be detected as the ozone concentration signal SB.
- an AC voltage for generating ozone is detected from SA as an output signal (high voltage AC voltage) as an output signal A.
- the output signal A and the ozone concentration signal SB are taken into a memory high coder capable of measuring the sample time on the order of milliseconds, and the concentration rising characteristic B of the generated ozone concentration signal SB with respect to the output signal A is strictly measured.
- the characteristic A in FIGS. 13 and 14 shows the rising characteristic (%) of the applied voltage from the power supply detected from the output signal SA.
- the characteristic B1 in FIG. 13 is the ozone generator for test I (FIG. 11).
- the raw material gas of high purity oxygen gas oxygen + 0% nitrogen gas
- the ozone concentration rising characteristics when the voltage of the characteristic A is applied are shown (the initial discharge surface is a discharge surface at the time of manufacture and shows a virgin discharge surface which has not been discharged once).
- Characteristic B2 in FIG. 13 is a high purity oxygen gas (discharged after oxygen gas with a trace amount of nitrogen gas added (oxygen + 500 ppm nitrogen gas) gas in the ozone generator for test I (FIG. 11) (oxygen + 500 ppm nitrogen gas) 7 shows the ozone concentration rising characteristics when a raw material gas of oxygen + 0% nitrogen gas is supplied to the test ozone generator I and a voltage of rising characteristics A is applied.
- the characteristic B3 in FIG. 13 is again the high purity oxygen gas (discharged after the discharge for several hours with the high purity oxygen gas (oxygen + 0% nitrogen gas) gas in the test ozone generator I (FIG. 11).
- 7 shows the ozone concentration rising characteristics when a raw material gas of oxygen + 0% nitrogen gas is supplied to the test ozone generator I and a voltage of rising characteristics A is applied.
- an ozone concentration of about 100 g / m 3 to 210 g / m 3 may be emitted in a period of about 1000 seconds (about 16.6 minutes) of discharge, but when the discharge is operated for a long time,
- the characteristics B1 and B2 show characteristics in which the concentration decreases and asymptotically approaches the saturation concentration value 12 g / m 3 of the characteristic B3.
- the saturation concentration value of 12 g / m 3 indicated by the characteristic B3 is the ozone generation ability when the discharge surface is made the non-conductive insulator film 2104 a.
- This ozone generation with a concentration value of 12 g / m 3 means that ozone is generated by an effect that does not contribute to the discharge surface, and this ozone concentration 12 g / m 3 (ozone concentration rising characteristic region 1000 a) is a dielectric barrier discharge It can be said that it is the limit ozone concentration that can be generated by the collision of the generated electrons with oxygen gas.
- Characteristic B10 is the discharge surface after discharge for several hours with high purity oxygen gas (oxygen + 0% nitrogen gas) gas in the test ozone generator I (FIG. 11) in which the discharge surface material is composed of the non-conductive insulator film 2104a. Then, again, the raw material gas of (Oxygen + 500 ppm nitrogen gas) gas in which a trace amount of nitrogen gas was added to oxygen was flowed to the ozone generator I for test, and the ozone concentration rising characteristics when the voltage of rising characteristics A was applied Show.
- Characteristic B20 is the discharge surface after discharge for several hours with high purity oxygen gas (oxygen + 0% nitrogen gas) gas in the test ozone generator I (FIG. 11) in which the discharge surface material is composed of the non-conductive insulator film 2104a. Then, again, the raw material gas of (oxygen + 18.4 ppm nitrogen gas) gas in which a trace amount of nitrogen dioxide gas was added to oxygen was flowed to the test ozone generator I, and the ozone concentration rise when the voltage of rise characteristic A was applied. It shows the above characteristics.
- Characteristic B30 is a discharge surface after discharge for several hours with high purity oxygen gas (oxygen + 0% nitrogen gas) gas in the test ozone generator II (FIG. 12) in which the discharge surface material is composed of the photocatalyst insulating film 2104b.
- the raw material gas of high purity oxygen gas (oxygen + 0% nitrogen gas) gas is again flowed into the test ozone generator I, and the ozone concentration rising characteristics when the voltage of the rising characteristic A is applied is shown.
- a characteristic S0 (two-dot chain line) indicates an assumed characteristic of the ozone concentration rising characteristic when it is assumed that high concentration ozone can be generated only by the collision of electrons generated by the dielectric barrier discharge and oxygen gas molecules.
- the discharge type ozone generator differs in concentration (the amount of ozone generated) depending on the kind of source gas, discharge surface material, etc., and to verify the mechanism that high concentration ozone gas can be generated, what kind of It is necessary to determine if ozone gas is being generated as a result.
- concentration the amount of ozone generated
- It is necessary to determine if ozone gas is being generated as a result.
- the origin factor can be almost determined by examining in detail the rising response of the ozone concentration generated to the rising response of the output applied to the ozone generator due to the difference between the source gas species and the discharge surface material It was judged. Furthermore, it becomes clearer by re-verifying the characteristic data and the analysis facts described in the prior art Patents 1 to 6 of the prior art.
- test ozone generator I having a discharge surface configuration (FIG. 11) in which the material of the discharge surface is a dielectric 2103 and a passive insulator film 2104a.
- Ozone concentration start-up characteristics B1 As a confirmation test, in order to see the discharge surface state and ozone generation, high purity oxygen (oxygen + 0% N on the initial discharge surface immediately after washing and drying after manufacturing without discharging Ozone concentration rising characteristics in 2 gas) were measured.
- Ozone concentration startup characteristic B2 as a confirmation test, the oxygen + 500ppmN 2 gas, once a high concentration of the high purity oxygen in the discharge surface state after ozone was generated discharge (oxygen + 0% N 2 gas) concentration of ozone in the upright Upper characteristics were measured.
- Ozone concentration start-up characteristic B3 As a confirmation test, measure the ozone concentration start-up characteristic with high purity oxygen (oxygen + 0% N 2 gas) in the discharge surface state where the discharge surface was made sufficiently clean by discharge with high purity oxygen gas did.
- (oxygen + 500 ppm N 2 ) gas in which a trace amount of nitrogen of 500 ppm N 2 gas was added to the oxygen gas was adopted as the source gas so that the nitrogen effect in ozone gas generation could be more clearly and quantitatively evaluated.
- nitrogen dioxide as the representative gas NOx gas since the nitrogen gas traces of NOx gas is generated during the discharge (NO 2) gas trace amounts added gas (oxygen + 18.4ppmNO 2) was also employed.
- Ozone concentration start-up characteristic B10 As a confirmation test, on the discharge surface after being discharged with high purity oxygen gas (oxygen + 0% nitrogen gas) gas for several hours, ozone ozone with source gas using oxygen + 500 ppm N 2 gas again Concentration rise characteristics were measured.
- Ozone concentration start-up characteristic B20 As a confirmation test, on the discharge surface after discharging for several hours with high purity oxygen gas (oxygen + 0% nitrogen gas) gas, ozone with the source gas using oxygen + 18.4 ppm NO 2 again Concentration rise characteristics were measured.
- high purity oxygen gas oxygen + 0% nitrogen gas
- Ozone concentration start-up characteristic B30 As a confirmation test, high purity oxygen gas (oxygen was detected using the test ozone generator II of the discharge surface configuration (FIG. 12) using the dielectric 2103 and the photocatalyst insulating film 2104b as materials of the discharge surface After discharge for several hours with + 0% nitrogen gas) gas, the ozone concentration rising characteristics of the source gas using high purity oxygen (oxygen + 0% N 2 gas) were measured again.
- the ozone gas generated in about 1 second to about 1000 seconds (16.7 minutes) originates from the fact that the discharge surface is the initial discharge surface, and adheres (adsorbs) to the initial discharge surface by discharging.
- Moisture and nitrogen gas, which are atmospheric components, are struck by electrons and ions in the discharge, and discharge of oxygen gas and trace amounts of the knocked out gas cause oxygen dissociation and ozone gas generated. It is judged.
- the concentration is maintained, and after reaching the maximum concentration of 210 g / m 3 (103 500 ppm) in about 30 seconds to 50 seconds, the concentration gradually decreases in about 1000 seconds (16.7 minutes), and the final concentration value is 12 g. It is confirmed that only the ozone concentration around / m 3 (5600 ppm) can be obtained.
- the concentration of 12 g / m 3 (5600 ppm) is obtained in about 1 second after the application of the output signal A (discharge start), but a higher concentration can be obtained It is confirmed that it can not be done.
- the ozone generation response time is about 1 (s), where ozone is generated by the three-body collision between the dissociated oxygen atom and oxygen gas, which is dissociated into oxygen atoms at about 10 -5 (s) by discharge theoretically From what is said, it is a fact that this test revealed that the ozone concentration that can be generated by the discharge electrons is 12 g / m 3 (5600 ppm).
- the concentration rises from about 1 second after the application of the output signal A (discharge start) from the ozone concentration rise characteristic B10 which is the source gas using oxygen + 500 ppm N 2 gas shown in FIG. 14 and about 40 seconds from the discharge start Maintaining the generation concentration of 12 g / m 3 (5600 ppm), the concentration gradually rises after about 40 seconds, and with a very slow response of about 3000 seconds (50 minutes) from the discharge start, about 100 g / m 3 ( The characteristic of saturation at a concentration around 52000 ppm) is confirmed.
- the ozone concentration rising characteristic B10 shown in FIG. 14 is a gas obtained by adding a trace amount of nitrogen of 500 ppm N 2 gas to the oxygen gas (oxygen + 500 ppm N 2 ), but it is not shown in FIG.
- the maximum ozone concentration is also 279 g / m with (oxygen + 1% N 2 ) gas added with trace amount of nitrogen of about 1% Up to 3 (130000 ppm) has been confirmed. That is, when the nitrogen oxide gas contributing to high concentration ozone generation raises the nitrogen addition amount to 1%, the nitrogen oxide gas generated by the discharge also increases, and the ozone concentration generated as a result also increases. It is judged.
- the concentration rising characteristic B20 which is a raw material gas using oxygen + 18.4 ppm NO 2 shown in FIG. 14, the concentration rises from about 1 second after the output signal SA is applied (discharge start), and from the discharge start
- the generated concentration of 12 g / m 3 (5600 ppm) is maintained for about 2 seconds, and after reaching a concentration of 312 g / m 3 (145500 ppm) in about 2 seconds to 30 seconds, a high concentration of about 350 g / m 3 (163000 ppm) It was confirmed that ozone could be generated.
- the ozone concentration rising characteristic B20 has a rapid response to ozone concentration rising because the amount of nitrogen dioxide (18.4 ppm NO 2 ) added to the oxygen gas as the source gas is much smaller than the amount of nitrogen addition (500 ppm N 2 ), And considering that the high concentration ozone can be generated and the NOx gas is generated by the discharge containing nitrogen, nitrogen dioxide (NO 2 ) is larger than nitrogen gas as a gas originating from the generation of high concentration ozone. Can be seen. Also, this assumption is a fact which is in good agreement with the technical contents disclosed in Patent Documents 1 to 6.
- the ozone concentration set as the source gas using high purity oxygen (oxygen + 0% N 2 gas) From the above characteristics B30, it was confirmed that a concentration can rise in about 12 seconds in about 1 second after application of the output signal A (discharge start) and a high concentration ozone of maximum concentration 350 g / m 3 (163000 ppm) can be generated in about 12 seconds.
- the ozone concentration rising characteristic B30 is the material of the discharge surface with the dielectric 2103 even if the source gas is a high purity oxygen gas not containing nitrogen or nitrogen dioxide such as the ozone concentration rising characteristic B10, B20.
- the test ozone generator II of the discharge surface configuration (FIG. 12) in which the photocatalytic insulating film 2104 b is used proves that ozone gas with relatively high response speed and high concentration is generated.
- the characteristic S0 indicated by the two-dot chain line in FIG. 14 is based on the assumption that if oxygen generated by discharge dissociates the supplied oxygen gas to generate ozone gas with a high concentration of 350 g / m 3 (163000 ppm). It is a concentration rise characteristic.
- the response time for generating the oxygen atom is about 10 -5 (s) to the output, and the three-body collision of the dissociated oxygen atom and the oxygen gas
- the ozone generation response time at which ozone is generated is about 1 (s), so the concentration immediately exceeds 350 g / m 3 (163000 ppm).
- the characteristic S0 assuming the case where a high concentration was obtained by electrons resulted in no result at all in the test results of the ozone concentration rising characteristics B10 to B30.
- the ozone concentration at which ozone is considered to be generated in a quick response of about 1 second was a characteristic of 12 g / m 3 (5600 ppm).
- the ozone concentration that contributes to the generation of ozone gas by electrons is about 12 g / m 3 (5600 ppm), and high concentration ozone exceeding 200 g / m 3 is generated. I found it was not. It is proved in these tests that it can not be said theoretically. It has been experimentally proved that the factor by which high concentration ozone is generated is at least contributed by nitrogen dioxide (NO 2 ) contained in the discharge or the photocatalytic material on the discharge surface.
- NO 2 nitrogen dioxide
- the discharge form is not continuous discharge like glow discharge, but dielectric barrier discharge is realized in a short gap discharge space via a dielectric.
- the dielectric barrier discharge is a high electric field discharge, and since this discharge has an infinite number of intermittent discharge forms, oxygen dissociation is efficiently performed by the effect of nitrogen dioxide of the source gas or the discharge surface material (photocatalyst insulating film 2104 b) during the discharge period. It is believed that the promoted and dissociated oxygen atoms play a role in efficiently generating ozone gas in the pause period of this intermittent discharge mode. As a result, it is judged that the ozone generator 11 can generate high concentration ozone gas exceeding 200 g / m 3 (93333 ppm) by dielectric barrier discharge.
- the ozone generator 11 is a nitrogen (addition) -free oxygen gas having a nitrogen gas content of less than 0.1% from the raw material gas purification apparatus 300. Can be generated by suppressing the amount of NOx contained in the ozone gas to less than several ppm, as high concentration ozone gas exceeding 200 g / m 3 .
- a specific metal oxide substance that is, the photocatalytic insulating film 2104 b is applied to the discharge surface of the ozonizer 11 for the purpose of downsizing and nitrogen-free source gas, so that the ozone generation ability is It raises and realizes the ozone generator 100 which has the ozone generator 11 which can take out high concentration ozone.
- the ozone gas utilization system of the present embodiment uses the miniaturization technology and the small capacity type of the ozone generation device 100, and takes out the oxygen gas from water and the atmosphere existing in the natural environment as a high purity oxygen source. Furthermore, an apparatus for purifying oxygen with high purity is used as a source gas purification apparatus 300.
- FIG. 8 is an explanatory view showing a configuration example in which the power supply device 400 as a configuration example to be used in combination with the ozone generation device 100 is a regenerated energy power generation device.
- the power supply device 400 includes a regenerated energy generating cell unit 40 a and a generated electricity control unit 40 b.
- the regenerated energy generating cell unit 40 a has a solar cell module array 41, and the generated electricity control unit 40b is comprised including the electrical protection BOX 42, the electrical storage device 43, the current collection board 44, and the power converter 45.
- the regenerated energy generating cell unit 40a has the solar cell module array 41 as regenerated energy.
- the generated electricity control unit 40b controls the accumulation, accumulation and generation of electricity generated by the regenerated energy generation cell unit 40a from a direct current source to a commercial alternating current source.
- the electricity generated from one solar cell module array 41 is temporarily collected in the current collection board 44 via the electrical protection BOX 42 in the electrical generation control unit 40 b.
- the electrical protection BOX 42 is provided between the regenerative energy generating cell unit 40 a and the storage battery 43 of the power generation control unit 40 b.
- the electrical protection box 42 shuts off safety against troubles such as heat generation and short circuit of the regenerative energy generating cell unit 40a, prevention of over voltage, etc., and diode installation for backflow prevention when lightning occurs to the regenerative energy generating cell unit 40a, etc. ing.
- sensor signals such as the amount of electric power generated from the regenerative energy generation cell unit 40a and the cell temperature, and a signal for instructing adjustment of the electric amount are also transmitted to the generated electricity control unit 40b via the electric protection BOX 42.
- the electricity generated by the solar cell module array 41 and obtained through the electrical protection BOX 42 is collected by the current collector 44 and temporarily accumulated by the capacitor 43, and then the power converter 45 converts the direct current source into an alternating current power supply 70.
- Power supply 70 to supply the generated electricity to the outside constantly and stably.
- the power supply device 400 employing the solar cell module array 41 which is a regenerated energy generation source, not only generates electricity and transmits power to the outside, but also can effectively utilize it in the generated area. Is required. Therefore, in areas, remote areas, remote islands or isolated large vessels, part of the electricity from renewable energy generation is used to generate nitrogen-free ozone gas, and air pollution, sterilization, water and sewage treatment, etc., for various environmental measures. If ozone gas with a small environmental load can be used as a countermeasure against red tide, an effect to improve desirable regional environment can be expected.
- the power supply device 400 supplies the power supply 70 serving as the operation power of the ozone generation device 100 using the regenerated energy power generation cell unit 40 mounted with the solar cell module array 41 that is the renewable energy source. ing.
- the ozone gas utilization system of this embodiment can execute the ozone utilization processing by the application processing apparatus even in a place where ordinary power source utilization is difficult, such as remote land, remote islands, and ships.
- FIG. 9 is a block diagram showing the configuration of a first modified example of the ozone gas utilization system.
- the treated water from the coagulation sedimentation tank 20b is taken as a pre-ozone treatment substance 91.
- the first modification will be described while appropriately omitting the description of the same configuration as the basic configuration of the embodiment shown in FIGS. 1 to 8.
- the chemical mixing tank 20a chemical treatment is performed on the treatment source water 90 by the neutralizer chemical 90a, and then, in the coagulation sedimentation tank 20b, the treated water subjected to filtration of suspended solids etc. is a substance before ozonation It injects into the ozone gas processing reactor 21 of the application apparatus 200 as 91.
- an ozone space for supplying ozone gas is provided, and a fine hole (ejector) is provided in the ozone space, and the processing water in the processing tank of the ozone gas processing reactor 21 is provided from this hole.
- ozone gas such as oxidative decomposition and sterilization of organic substances contained in treated water is sent by feeding ozone gas as ozone gas bubbles and permeating ozone gas from the contact surface between treated water (pre-ozone treated substance 91) and ozone gas bubbles. Water purification treatment is carried out.
- the ozone treated water after the water purification treatment is output to the activated carbon adsorption treatment tank 23 as the post-ozone treatment substance 92.
- the substance after ozonization 92 contains fine decomposition substances and heavy metal oxide metal substances such as manganese, passes through the activated carbon adsorption treatment tank 23, becomes activated carbon treated water 93, and sand filtration treated water completely filtered through the sand filtration tank 24.
- it is temporarily stored in the ozonized substance / accumulation section 22, and distributed as completely treated water 95 as needed, and used.
- the ozone gas utilization system includes the ozonized substance / accumulation unit 22 as the processed product accumulation unit, so that the post-ozone treatment substance 92 can be used when necessary.
- the amount of ozone gas used for water purification treatment differs depending on the treatment source water 90, and is 2 to 5 mg / L for ordinary treated water (upper water) and 5 to 10 mg / L for contaminated wastewater (sewage)
- Water purification treatment with ozone water can be performed with a certain amount of ozone (gas) injection.
- water purification treatment amount with ozone gas can be performed at 200 m 3 / day, and the electric capacity of the ozone generator 11 is 1 kVA
- the ozone gas utilization system can be configured to perform water purification processing with a small electric capacity of about 1 ⁇ 2 to 1 ⁇ 3 as compared with the conventional ozone generator.
- the power supply device 400 can also constitute an ozone gas utilization system that performs sufficient water purification processing with a small capacity of about several kilovolts, if the power supply device 400 is used using a regenerative energy source, It is possible to realize an ozone gas utilization system that is very compact and performs water purification processing with reduced environmental load.
- the water purification process is performed on the treated water which is the pre-ozone treatment substance 91 as the ozone utilization process performed by the application device 200.
- the water purification process can be performed using the ozone generator 100 having a small electric capacity of about 1/2 to 1/3 as compared with the conventional ozone generator.
- FIG. 10 is an explanatory view showing a configuration of a second modified example of the ozone gas utilization system using the ozone generator 100.
- an ozone gas utilization system is constructed in a vessel 5 such as a container vessel or a crude oil tanker.
- a vessel 5 such as a container vessel or a crude oil tanker.
- seawater is supplied from the ballast water inlet 25 through the operation valve 27a as the treatment source water 90, and further, by the pump 28 for ballast water through the chemical mixing tank 20a, the ozonated substance / accumulation from the operation valve 27d. It is injected into the ballast tank 22B which is the
- the ballast water injected into the ballast tank 22B is again taken into the ballast water pump 28 from the operation valve 27b.
- the operation valve 27b is closed, the operation valve 27c is opened, and the chemical mixing tank 20a passes through the coagulation settling tank (filter) 20b as the pre-ozone treatment substance (treated water) 91 from the operation valve 27e to the ozone gas treatment reactor 21.
- the post-ozone treatment substance 92 obtained by subjecting the pre-ozone treatment substance 91 to water purification treatment is returned from the upper part of the ozone gas treatment reactor 21 to the ballast tank 22B via the operation valve 27f.
- the water purification process is performed while circulating the ballast water accumulated in the ballast tank 22B.
- An ozone gas supply space for supplying ozone gas is provided in the lower part of the ozone gas treatment reactor 21, and a fine hole (ejector) is provided in the ozone gas supply space, and the hole in the treatment tank of the ozone gas treatment reactor 21 is provided.
- the ozone gas is sent into the treated water as ozone gas bubbles, and the ozone gas is made to permeate from the contact surface of the treated water and the ozone gas bubbles, thereby performing processing such as oxidation decomposition and sterilization of the organic substance contained in the treated water We are cleaning up.
- a high purity oxygen gas 61 from which nitrogen gas and moisture content have been removed is supplied to the ozone generator 100 as a source gas by the oxygen PSA device 32 having a relatively small configuration and the high purity gas purifier 33.
- the high purity oxygen gas 61 can generate the ozone gas 62 containing almost no NOx gas, and this ozone gas 62 is an ozone gas treatment reactor Supplying to the lower ozone space 21 enables water purification using ozone gas.
- the ballast water drainage port 26 is a drainage port for distributing the ballast water accumulated in the ballast tank 22 B to the outside of the ship 5.
- the ozone gas utilization system of the 2nd modification is realized as ozone water purification processing of ballast water accumulated in ballast tank 22B in ships 5, such as a container ship and a crude oil tanker.
- the ozone gas utilization system of the second modified example having the ozone generator that uses the discharge surface of the ozone generator 100 as the specific photocatalyst as the source gas supplied to the ozone generator has high purity that does not contain nitrogen gas.
- ozone gas 62 containing almost no NOx gas using oxygen gas and performing ozone water purification treatment of ballast water accumulated in ballast tank 22B ozone water purification treatment with small environmental load is realized.
- the system configuration can be miniaturized to a level that can be installed in the ship 5.
- the water purification process of ballast water in the vessel 5 such as a container ship or a crude oil tanker is shown, but the discharge of the ozone generator 100 is also performed in the ozonation of the water and sewage in the large passenger ship.
- the ozone gas utilization system by adopting an ozone generator whose surface is a specific photocatalyst, the ozone gas 62 containing almost no NOx gas can realize ozone water purification processing with small environmental load.
- a dedicated water treatment vessel equipped with the ozone gas utilization system of the second modification is disposed at each port, and the container water vessel, crude oil tanker ballast water ozone water purification treatment is executed by the dedicated water treatment vessel. In this way, it will also be possible to supply processed water in a shorter time to container vessels and crude oil tankers.
- the ozone water purification process is performed on the treated water, which is the pre-ozone treatment substance 91, as the ozone utilization process performed by the application device 200. It is built in.
- the ozone water purification process is performed in the ship 5 using the ozone generator 100 having a small electric capacity of about 1/2 to 1/3 as compared with the conventional ozone generator. it can.
- the ballast tank 22B is provided as a treated product accumulation unit for accumulating the post-ozone treatment substance 92, the post-ozone treatment substance 92 can be used when necessary.
- the ballast water can be stably purified at a constant purification level.
- the power supply device 400 which is a regenerated energy power generation device and the ozone generator 100 employing an ozone generator whose discharge surface is a specific photocatalyst are further combined,
- an ozone gas utilization system that executes water purification processing using NOx-less ozone gas, it is possible to realize small-scale sterilization of seawater, red tide treatment, and sterilization of atmospheric gas on a very small scale. Since this ozone gas utilization system uses NOx less ozone gas with a small environmental load, it can be used in each area and has a great effect of improving the environment.
- sterilization of seawater or atmospheric gas is performed by executing sterilization processing using seawater or atmospheric gas as the pre-ozone treatment substance 91 as ozone utilization treatment of the application device 200.
- Sterilization can be realized using the relatively compact ozone generator 100.
- a conventional application device that executes water purification treatment or the like as ozone utilization treatment has a large device size, so the amount of electricity supplied from the device that generates ozone gas and the power supply for generating ozone gas are very large.
- the conventional ozone generator since the conventional ozone generator generates ozone gas by discharging an air source or oxygen containing 1% (10000 ppm) of nitrogen gas as a source gas, NOx is also generated, and the generated ozone gas is generated. Harmful NOx was included.
- ozone gas that reduces harmful impurities such as NOx gas with small electric power by reducing NOx gas which is an environmental load, and supplying power supply and power supply scale for generating ozone gas is small.
- an ozone gas utilization system having an application device that performs small-scale water purification processing using the ozone gas can not be realized.
- the ozone gas utilization system generates, as a source gas, nitrogen-free oxygen gas with a nitrogen gas content of less than 0.1% as a source gas, as a source gas, and generates a high concentration ozone gas as a source gas.
- the ozone generator 100 employs an ozone generator with a specific photocatalyst with a discharge surface that employs nitrogen-less ozone generation technology, and is compact by adopting a high frequency ozone power supply that utilizes inverter technology as a power supply technology for the ozone generator. It is constructed using an ozone generator 100 as an ozone generator.
- the power supply device 400 of the ozone gas utilization system of the present embodiment utilizes a small-scale power supply source by solar light, wind power, geothermal power, water power, wave power, bioelectric power generation, and a photocatalyst with a specific discharge surface.
- the ozone generator 100 adopting the ozone generator, it is possible to realize a small-scale system (environmental device) using ozone gas in which NOx gas, which is an environmental load, is reduced.
- the ozone gas utilization system according to the present embodiment can perform small-scale environmental treatment using ozone, which can improve various environments, even in remote areas, remote islands, isolated large vessels, and tankers.
- the ozone gas utilization system of this embodiment is subjected to the following measures as the ozone generator 100 which is a component.
- the frequency of the boosted high-frequency voltage 72 for the ozone generator 11 is increased to 10 kHz or more.
- the transformer core 131 is surrounded by a conductor / magnetic shield cover 135 such as an aluminum plate via a transformer cooling cavity 136 for cooling the core to prevent heat generation due to leakage flux of the transformer main body
- predetermined power can be supplied at a fixed frequency near the resonance frequency.
- the scale of the conventional application device to be executed as ozone utilization treatment including water purification treatment using ozone gas is reconsidered to a small scale device specification as the ozone generator 100 is miniaturized, and the raw material gas supply
- the source is also a small-scale raw material gas purification apparatus 300, and the electric power source is a small-scale capacity power supply apparatus 400 using a regenerative energy power source.
- the ozone gas utilization system of the present embodiment includes an ozone generator adopting the miniaturization technology and the nitrogenless ozone generation technology as the ozone generation technology and the power supply technology, and further, sunlight, wind power, geothermal power, water power,
- a power supply device 400 that utilizes a small-scale power supply source by wave power and bioelectric power generation, by using a high frequency inverter power supply equipped with a load resonance type high frequency step-up transformer 13, ozone gas with low environmental load reduced Use system can be built.
- the ozone gas utilization system performs the water purification treatment in remote areas or remote islands as in the first modification, and the water purification treatment in ballast water of a tanker ship or the like as in the second modification. Since it can be used as a system, it is promising as an environment improvement processing device for small scale regional environments.
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Abstract
Description
(基本構成)
図1はこの発明による実施の形態であるオゾンガス利用システムの構成を示す説明図である。図2は実施の形態1のオゾンガス利用システムの効果を示すグラフであり、具体的には、オゾン発生装置100とアプリケーション装置200との間における注入するオゾン濃度とオゾンの水浄化能力との関係を示すグラフである。図3は実施の形態1のオゾンガス利用システムで用いられるオゾン発生装置100の内部構成を示す説明図である。図4及び図5は、図3で示した負荷共振型高周波昇圧トランス13の内部構造の詳細を示す説明図であり、図5においてトランスモールドコイル132の構造を示し、図4においてトランスモールドコイル132を除く構造を示している。
図3~図5において、オゾン発生装置100の小型化を図ったオゾン発生器11におけるインバータ電源装置120と負荷共振型高周波昇圧トランス13との詳細構成を示している。
図6は、図1で示したアプリケーション装置200におけるオゾンガス処理リアクター21の詳細構成を示す説明図である。オゾンガス処理リアクター21はオゾン利用処理としてオゾンガスを用いて水洗浄処理を実行する。
図7は、オゾン発生装置100と組合せて使用する原料ガス精製装置300の詳細を示す説明図である。通常は原料ガスの供給源として市販の酸素ボンベを用いるが、利用分野を任意とするオゾンガス利用システムにするためには、大気中の空気もしくは水から酸素ガスを作り出し、そのガスの水分や窒素ガスを取り除く構成にすることが望ましい。
昔から放電中の電子である程度のオゾン濃度が得られることは明らかであったが、100g/m3(46700ppm)を超えるような高濃度なオゾンガスが生成できるメカニズムは、先行技術文献で様々な技術が開示されてきているが、正しいメカニズム追究がなされているとは言えない。
図13、図14における特性Aは出力信号SAから検出した電源からの印加電圧の立上特性(%)を示している。
特性B10は放電面材料を不動体絶縁体膜2104aで構成した試験用オゾン発生器I(図11)において、高純度酸素ガス(酸素+0%窒素ガス)ガスで数時間放電させた後の放電面で、再度、酸素に微量の窒素ガスを添加した(酸素+500ppm窒素ガス)ガスの原料ガスを試験用オゾン発生器Iに流し、立上特性Aの電圧を印加した場合のオゾン濃度立上特性を示す。
特性B20は放電面材料を不動体絶縁体膜2104aで構成した試験用オゾン発生器I(図11)において、高純度酸素ガス(酸素+0%窒素ガス)ガスで数時間放電させた後の放電面で、再度、酸素に微量の二酸化窒素ガスを添加した(酸素+18.4ppm窒素ガス)ガスの原料ガスを試験用オゾン発生器Iに流し、立上特性Aの電圧を印加した場合のオゾン濃度立上特性を示す。
特性B30は放電面材料を光触媒絶縁膜2104bで構成した試験用オゾン発生器II(図12)において、高純度酸素ガス(酸素+0%窒素ガス)ガスで数時間放電させた後の放電面で、再度、高純度酸素ガス(酸素+0%窒素ガス)ガスの原料ガスを試験用オゾン発生器Iに流し、立上特性Aの電圧を印加した場合のオゾン濃度立上特性を示す。
図8は、オゾン発生装置100と組合せて使用するための一構成例としての電源供給装置400を再生エネルギー発電装置とした構成例を示す説明図である。
ここでは、人の飲料水の上水浄化、汚水等の下水浄化、プール水の水浄化と殺菌、水族館の有機物処理及び殺菌処理のための小型の水環境改善処理等、様々な水浄化処理を実現するためのオゾンガス利用システムの第1の変形例について説明する。
以下、大型客船の水処理やコンテナ船、原油タンカーのバラスト水の水浄化処理用の環境装置となるオゾンガス利用システムを第2の変形例として説明する。
高純度酸素ガスを精製する原料ガス精製装置300に加え、再生エネルギー発電装置である電源供給装置400と放電面を特定の光触媒としたオゾン発生器を採用したオゾン発生装置100とをさらに組合せて、NOxレスオゾンガスを利用した水浄化処理を実行するオゾンガス利用システムを実現することにより、小規模な海水の殺菌や赤潮処理や大気ガスの殺菌が非常に小さな規模で実現できる。このオゾンガス利用システムは、環境負荷の小さいNOxレスのオゾンガスを利用しているため、各地域で利用でき、環境改善に役立つ効果は大きい。
水浄化処理等をオゾン利用処理として実行する従来のアプリケーション装置は、装置規模が大きいため、オゾンガスを発生させる装置の電気供給量やオゾンガスを発生させるための電源が非常に大きい。しかも、従来のオゾン発生器は、原料ガスとして、空気源もしくは、酸素に1%(10000ppm)の窒素ガスを含んだものを放電によってオゾンガスを発生させていたため、NOxも生成され、発生したオゾンガスに有害なNOx含まれていた。
12 コンバータ/インバータ部
13 負荷共振型高周波昇圧トランス
21 オゾンガス処理リアクター
22 オゾン処理物質・蓄積部
22B バラストタンク
32 酸素PSA装置
33 高純度ガス精製器
40a 再生エネルギー発電セル部
41 太陽電池モジュールアレイ
100 オゾン発生装置
131 トランスコア
132 トランスモールドコイル
133 トランスギャップスペーサ
134 トランス抑え板
135 導電体・磁気シールドカバー
200 アプリケーション装置
300 原料ガス精製装置
400 電源供給装置
500 排オゾン分解装置
Claims (16)
- 酸素ガスを含む原料ガスを供給する原料ガス供給装置(300)と、
前記原料ガスからオゾンガスを生成するオゾン発生装置(100)と、
前記オゾンガスを利用して、オゾン処理前物質(91)からオゾン処理後物質(92)を得るオゾン利用処理を実行するアプリケーション装置(200)とを備え、
前記オゾン発生装置は、
供給高周波電圧を生成するインバータ電源(120)と、
前記供給高周波電圧を昇圧して昇圧高周波電圧を得る共振型トランス部(13)と、
前記共振型トランス部より受ける前記昇圧高周波電圧を動作電圧として受け、前記原料ガスから、200g/m3以上のオゾン濃度の前記オゾンガスを生成するオゾンガス発生器(11)とを含み、
前記アプリケーション装置は、
0.2MPa以上の圧力環境下で前記オゾンガスを受けることを特徴とする、
オゾンガス利用システム。 - 請求項1記載のオゾンガス利用システムであって、
前記インバータ電源は、10kHz以上の高周波な前記供給高周波電圧を生成し、
前記共振型トランス部は、
前記供給高周波電圧を昇圧して前記昇圧高周波電圧を得るトランス本体(131~133)と、
前記トランス本体との間に冷却空間を確保し、かつ、前記トランス本体の磁束漏れが外部に影響を与えないように前記トランス本体を覆う金属製のカバー部材(135)とを備える、
オゾンガス利用システム。 - 請求項1または請求項2記載のオゾンガス利用システムであって、
前記オゾン発生装置用の動作電源を供給する電源供給装置(400)をさらに備え、
前記電源供給装置は、
再生可能エネルギー源を利用して前記動作電源を供給する、
オゾンガス利用システム。 - 請求項1または請求項2記載のオゾンガス利用システムであって、
前記原料ガス供給装置は、
空気中あるいは水から酸素ガスを取り出す酸素抽出装置(32)を含む、
オゾンガス利用システム。 - 請求項1または請求項2記載のオゾンガス利用システムであって、
前記アプリケーション装置が実行する前記オゾン利用処理は、
前記オゾン処理前物質である水に対する水浄化処理を含む、
オゾンガス利用システム。 - 請求項5記載のオゾンガス利用システムであって、
前記オゾン処理前物質は、船舶(5)で利用される水を含む、
オゾンガス利用システム。 - 請求項1または請求項2記載のオゾンガス利用システムであって、
前記アプリケーション装置は、
前記オゾン処理後物質を蓄積する処理物蓄積部(22)を有することを特徴とする、
オゾンガス利用システム。 - 請求項1または請求項2記載のオゾンガス利用システムであって、
前記アプリケーション装置が実行する前記オゾン利用処理は、
海水あるいは大気ガスを前記オゾン処理前物質とした殺菌処理を含む、
オゾンガス利用システム。 - 酸素ガスを含む原料ガスを供給する原料ガス供給装置(300)と、
前記原料ガスからオゾンガスを生成するオゾン発生装置(100)と、
前記オゾンガスを利用して、オゾン処理前物質(91)からオゾン処理後物質(92)を得るオゾン利用処理を実行するアプリケーション装置(200)とを備え、
前記オゾン発生装置は、
供給高周波電圧を生成するインバータ電源(120)と、
前記供給高周波電圧を昇圧して昇圧高周波電圧を得る共振型トランス部(13)と、
前記共振型トランス部より受ける前記昇圧高周波電圧を動作電圧として受け、前記原料ガスから、200g/m3以上のオゾン濃度の前記オゾンガスを生成するオゾンガス発生器(11)とを含み、
前記原料ガス供給装置は、窒素ガスの含有量が0.1%未満の酸素ガスを前記原料ガスとして供給し、前記オゾンガス発生器は光触媒材料を放電面とし、
前記アプリケーション装置は、
0.2MPa以上の圧力環境下で前記オゾンガスを受けることを特徴とする、
オゾンガス利用システム。 - 請求項9記載のオゾンガス利用システムであって、
前記インバータ電源は、10kHz以上の高周波な前記供給高周波電圧を生成し、
前記共振型トランス部は、
前記供給高周波電圧を昇圧して前記昇圧高周波電圧を得るトランス本体(131~133)と、
前記トランス本体との間に冷却空間を確保し、かつ、前記トランス本体の磁束漏れが外部に影響を与えないように前記トランス本体を覆う金属製のカバー部材(135)とを備える、
オゾンガス利用システム。 - 請求項9または請求項10記載のオゾンガス利用システムであって、
前記オゾン発生装置用の動作電源を供給する電源供給装置(400)をさらに備え、
前記電源供給装置は、
再生可能エネルギー源を利用して前記動作電源を供給する、
オゾンガス利用システム。 - 請求項9または請求項10記載のオゾンガス利用システムであって、
前記原料ガス供給装置は、
空気中あるいは水から酸素ガスを取り出す酸素抽出装置(32)と、
前記酸素抽出装置から得た酸素ガスから高純度な酸素ガスを前記原料ガスとして生成する酸素ガス精製機(33)とを含む、
オゾンガス利用システム。 - 請求項9または請求項10記載のオゾンガス利用システムであって、
前記アプリケーション装置が実行する前記オゾン利用処理は、
前記オゾン処理前物質である水に対する水浄化処理を含む、
オゾンガス利用システム。 - 請求項13記載のオゾンガス利用システムであって、
前記オゾン処理前物質は、船舶(5)で利用される水を含む、
オゾンガス利用システム。 - 請求項9または請求項10記載のオゾンガス利用システムであって、
前記アプリケーション装置は、
前記オゾン処理後物質を蓄積する処理物蓄積部(22)を有することを特徴とする、
オゾンガス利用システム。 - 請求項9または請求項10記載のオゾンガス利用システムであって、
前記アプリケーション装置が実行する前記オゾン利用処理は、
海水あるいは大気ガスを前記オゾン処理前物質とした殺菌処理を含む、
オゾンガス利用システム。
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| PCT/JP2017/028921 WO2019030852A1 (ja) | 2017-08-09 | 2017-08-09 | オゾンガス利用システム |
| US16/637,377 US11505463B2 (en) | 2017-08-09 | 2017-08-09 | Ozone gas usage system |
| JP2019535502A JP7162993B2 (ja) | 2017-08-09 | 2017-08-09 | オゾンガス利用システム |
| CN201780093738.9A CN110997556B (zh) | 2017-08-09 | 2017-08-09 | 臭氧气体利用系统 |
| EP17920701.4A EP3666728A4 (en) | 2017-08-09 | 2017-08-09 | OZONE GAS UTILIZATION SYSTEM |
| KR1020207003266A KR102387225B1 (ko) | 2017-08-09 | 2017-08-09 | 오존 가스 이용 시스템 |
| TW106138439A TWI666168B (zh) | 2017-08-09 | 2017-11-07 | 臭氧氣體利用系統 |
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| JP (1) | JP7162993B2 (ja) |
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| EA202192243A1 (ru) * | 2019-02-25 | 2022-02-08 | Примозоун Продакшен Аб | Низкочастотный генератор озона |
| WO2022030050A1 (ja) * | 2020-08-04 | 2022-02-10 | 住友精密工業株式会社 | オゾン発生装置 |
| WO2022081135A1 (en) * | 2020-10-13 | 2022-04-21 | Hewlett-Packard Development Company, L.P. | Ozone gas generating keyboard |
| CN112820798B (zh) * | 2020-12-31 | 2022-02-11 | 深圳市拉普拉斯能源技术有限公司 | 一种钝化设备 |
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| KR20200024912A (ko) | 2020-03-09 |
| TWI666168B (zh) | 2019-07-21 |
| CN110997556A (zh) | 2020-04-10 |
| EP3666728A1 (en) | 2020-06-17 |
| KR102387225B1 (ko) | 2022-04-18 |
| JPWO2019030852A1 (ja) | 2020-04-23 |
| US20200207620A1 (en) | 2020-07-02 |
| CN110997556B (zh) | 2023-06-13 |
| TW201910258A (zh) | 2019-03-16 |
| JP7162993B2 (ja) | 2022-10-31 |
| EP3666728A4 (en) | 2021-03-24 |
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