JP3061647B2 - Equipment for removing odorous substances in the atmosphere - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing odor components in an atmosphere. More specifically, the present invention relates to a device for removing odor components suitable for removing odor components radiating into the air mainly during cooking of foods, production and processing of seasonings, and particularly during heat treatment. In the atmosphere of these processes and processes, oils and fats, amino acids, miso,
Seasoning such as soy sauce, pepper, pepper, ginger, curry powder and other spices, spices and seafood, meat, garlic, onion, leek, green pepper, a large amount of steam generated and generated during heat treatment of special vegetables, It contains odorous substances and volatile gases contained in oil mist and the like. The apparatus of the present invention can also be used in the atmosphere of a workplace such as processing, processing of paints, metals, plastics, oils and fats, petroleum production, rubber, marine processing, soap, chemicals, pulp, leather, fertilizer, animal and animal iliac bones. The odor component treatment can be applied.

[0002]

2. Description of the Related Art In a heat treatment process of various kinds of foods, for example, a heat treatment process of garlic, onion, and the like, a strong odor component is diffused into the air, which is an odor pollution. These odor components have little odor effect when the concentration in the atmosphere is moderate, but have a problem specific to odor that the higher the concentration, the more pronounced the odor effect. Other substances that may cause odor pollution include paints, metals, plastics, oils and fats, petroleum refining,
Factories and workplaces for rubber, fishery processing, soap, chemicals, pulp, leather, fertilizer, and processing and processing of animal iliac bones. As a deodorizing method in such a case, odor pollution can be avoided at least as long as odor components in the air are continuously removed. conventionally,
A method of introducing a gas containing an odor component into a tank, adding a large amount of water (acid or alkali solution depending on the type of the odor component), and decomposing and dissolving has been used. In addition, an adsorbed substance such as activated carbon is used, and a method of burning using a catalyst is also used.

[0003]

However, in the above-mentioned prior art, when water is used, a large amount of water is required. Moreover, such a large amount of water that dissolves and discharges the odor component needs to be released after further water treatment. In addition, it is difficult to absorb certain odor components as they are in water (including acids and alkaline liquids) as they are, which has a more difficult problem. Even when an adsorbent is used, a large amount of the adsorbent is required, which is not practical.
In the case of burning using a catalyst, a large amount of catalyst is required, and combustion at a high temperature is required.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a fog charged with ultrafine particles of ozone water is attached to an odor-producing substance in the air, and deodorization is performed by the deodorizing action of ozone. An object of the present invention is to provide an apparatus for removing odor components by attaching fine particles to a charged eliminator in an absorption tank.

More specifically, the present invention relates to a duct for transferring odorous substances released into the atmosphere to the upper part of an absorption tower.
In the above-mentioned absorption tower provided with a large number of eliminators, and a device for removing odor components in the air comprising a water seal tank provided below the absorption tower, the eliminator is charged with alternately different electric charges, The ozone water supplied from the ozone water generator is passed through a high-frequency high-voltage generator to the gas containing the components to form ultrafine fog, and then the fog is charged by an ionization electrode to remove odor components. An object of the present invention is to provide a device for removing odor components in air, wherein the fog that has been adsorbed and the right odor component is adsorbed is adsorbed by the charged eliminator and dropped into the water sealing tank. When an odor component contains an oil, it is preferable to first separate the odor component in an oil mist filter provided in the duct and remove the remaining odor component by the above-described means.

[0006]

According to the device of the present invention, the oil mist contained in the gas emitted from the source (the atmosphere containing the odorous substance is referred to as gas) is removed by a special ceramic oil mist filter, and the remaining gas is removed from the ozone water. Mix and cool with particulate water fog, ionize it, charge it to negative potential,
The water-soluble odor component is absorbed and dissolved in the fog particles. At this time, the water-insoluble odor components are also adsorbed to the fog particles. The fog particles having absorbed and adsorbed the odorous component are introduced between an eliminator (provided in an absorption tower) comprising a plurality of parallel electrodes loaded with positive and negative high potentials, and act between the electrodes. The fog particles charged to the negative potential are mainly attached to the electrode to which the positive potential is applied by the electric force (Coulomb force) of the electric field.

The fog particles attached to the electrode are deposited,
It becomes huge and becomes a water droplet, flows downward on the electrode plate surface, and drops. The odorous component is electrolyzed by ion migration due to the oxidizing action of ozone and the strong electric field action, and the chemical composition and structure of the odorous substance change. Ammonia-based substances dissolve well in water and are oxidized. Sulfur reacts well with ozone, deposits sulfur and decomposes. Other organic acids and hydrocarbon substances are decomposed into water and carbon and deodorized.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an odor component removing device of the present invention will be described in detail based on embodiments. FIG. 1 is a side sectional view showing one embodiment of the deodorizing component removing device of the present invention. The apparatus of this embodiment includes a degassing substance introduction duct section, an oil mist filter 2, a first absorption tower 5, and a second absorption tower 1 attached thereto.
5. Ozone water fog generator 6, 6 ', ion generator 7
7 ′, mainly composed of the water tank 12, the water sealing tank 16 and the control box 29.

A gas (a gas containing air, water vapor, oil mist, or odorous substance) generated from an odor component generating source (heat treatment pot) 1 in the case of the food industry is a powerful air blower 1
4 and 17, the air is sucked from the hood 3 together with the indoor atmosphere. At that time, the oil mist is removed by the ceramic oil mist filter 2 set in the hood 3 (oil mist is mainly generated when the food is processed with oil). The oil mist filter 2 is made of a perforated ceramic plate. A substantial portion of the oil mist in the gas adheres to the perforated plate and is removed from the gas.
(Oil mist adhering to the oil mist filter
By removing and washing the filter at any time,
Removed. The gas passing through the filter 2 passes through the duct 4 and is introduced in the direction of the first absorption tower 5. On the other hand,
Ozonized water generated in advance by an ozone water producing apparatus (described later) is fog (fog, for example, particle size of 10 μm or less by ozone water, fog or mist) by an ozone water fog generator 6.
Further, it is charged to a negative charge. This negative charge is performed by the ionization electrode 8 set in front of the ozone water fog generator 6 to which a high DC voltage is supplied by the ion generator 7. The fog charged to a negative charge mixes with the gas. This mixing causes the temperature of the gas to drop rapidly.

Thus, the water-soluble odorant is dissolved and absorbed by the fog. Water-insoluble odorous substances are also ionized and adsorbed by the fog. The fog is adsorbed and collected by the eliminator 11 (installed in the first absorption tower), and is dropped and collected in the water tank 12 (water droplet collection tank) installed below.

The eliminator 11 is made of a corrosion-resistant metal material.
It is composed of an electrode plate to which a negative high potential is applied. The applied voltage (6-10 KV) is supplied from the eliminator high voltage power supply 10 (DC-HTVG) and driven.

When a fog containing a odorous substance and having a negative potential passes through an electric field generated between the electrode plates of the eliminator 11, the fog is trapped by a positively charged positive electrode by electric force (Coulomb force). .

The trapped odorous substance reacts with ozone to be oxidized and decomposed, and changes into another substance by the action of ion transfer by electric field action, electrolysis by displacement current, etc., and gradually becomes odorless. The gas (mostly air, water vapor, and trace amount of residual odorous substances) treated in the first absorption tower 5 is removed by a mist trap 13 and aspirated by a relay air blower 14. 2 Introduce into absorption tower 15.
In this tower, a reaction and an action are carried out in the same process as in the absorption tower 5, and the residual odorous substance is treated by multiplying the residence time of the gas in the tower. That is, the eliminator 11 '
Again comes in contact with the charged fog. The charged fog is supplied by an ozone water generator, a fog generator 6 'and an ion generator 7', and an ionization electrode 8 '.
In the absorption tower 15, the eliminator 11 ′ (having the same structure as the eliminator 11 in the absorption tower 5) is replaced with a water sealing tank 16.
Thereby, the structure is completely shielded from the outside air outside the tower. The gas that has passed through the eliminator 11 ′ is removed of odorous substances, and passes through the water in the water sealing tank 16 as bubbles. At that time, a small amount of ozone gasified is removed. The gas passes through the mist trap 13 ′, is sucked by the exhaust air blower 17, passes through the silencer 18 (silencer) and the exhaust port orifice 19, and is released into the atmosphere as odorless exhaust gas.

In the case of a gas having a particularly large load (odor), it is preferable to directly blow ozone gas into each tower together with ozone water fog. In that case, an ozone gas decomposer is installed inside the silencer 18 to decompose and remove the ozone gas.

The eliminator cleaning nozzles 9 and 9 ′
It is a device that automatically cleans the inside of each tower and the constituent devices. Washing is performed intermittently at appropriate time intervals. Water is supplied to the cleaning nozzle. The air compressor 20 'is for driving the ultra fog generator by the pressure of the compressed air.

Returning to the description, the ozone water producing apparatus will be described. The air pressurized by the air compressor 20 undergoes a drying process by an air dryer 21 and is introduced into an ozone generator 23. The ozone generator produces an ozonized gas by using a high-frequency voltage obtained by the high-frequency high-voltage generator 22. As the ozone generator, for example, the one disclosed in Japanese Patent Publication No. 1-224202 is used.

The generated ozonized gas is introduced into a water pipe 24 through which water moves. Venturi tube 2 in water tube 24
4a are joined, and flow into the ozone mixer 25 as fine bubbles from the ozone inlet 24b provided here. In this process, the ozonized gas dissolves in water and becomes ozone water. Undissolved ozone is treated by an ozone filter 26 provided above the ozone mixer 25, converted into oxygen, and discharged out of the system.

The ozone water from the ozone mixer 25 is sent to an ozone water tank 27 and, if necessary, mixed with tap water introduced from another water pipe, and then mixed with the pressure system 2.
After passing through 8, a fog of ultra-fine particles of ozone water is obtained by a fog generator (an ultrasonic humidifier, provided on each of the first and second absorption towers 5 and 15). The fog is charged by ion generators 7, 7 '.

In this embodiment, the removal of odorous substances is first performed in the first absorption tower 5 and then in the second absorption tower 1
In FIG. 5, a structure for performing the finishing of the absorption step is shown. However, the first absorption tower may be omitted depending on the processing conditions. In this case, the gas containing the odorous substance is introduced into the second absorption tower 15 via the duct 4 from the generation source. In some cases, the first absorption tower is located between the first absorption tower and the second absorption tower.
Another or more absorption towers having substantially the same structure as the absorption tower may be provided.

The above description has been made with the odor substance removing apparatus of the present invention in mind for use in the food industry. However, the application of the apparatus of the present invention is not limited to other odor substances, such as paints, metals, plastics, and the like. Grease, soap, rubber, marine products,
It is similarly effective for use in the production of chemicals, leather, animal bones, petroleum, petroleum, etc., and removal of gas containing odor in the processing industry. It is also effective in removing fine dust, dust, radioactive gas, and radioactive dust. When removing radioactive gases or dust, the material to be separated off is still radioactive. Therefore, its disposal requires particularly careful measures. It is necessary to store in a container and wait for the radioactivity to decay, and to comply with other laws and administrative guidance at a minimum.

[0021]

The apparatus for removing odorous components according to the present invention has the above-mentioned structure and operates, and therefore has the following effects. Since a large amount of water, chemicals, catalysts, microbial materials and the like are not used, the running cost is low. Extremely high deodorizing efficiency. (Due to ozone water fog, ozone gas, and ionizing charging.) Smaller than other device systems, and the total setting cost is lower. Driving operation and maintenance are extremely simple. It is also effective for removing fine dust, dust, radioactive gas and radioactive dust.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of the present invention.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Heat treatment tank 2 Oil mist filter 3 Hood 4 Duct 5 1st absorption tower 6, 6 'Ozone water fog generator 7, 7' Ion generator 8, 8 'Ionization electrode 9, 9' Eliminator cleaning nozzle 10, 10 ' Eliminator high voltage power supply 11, 11 'Eliminator 12 Reservoir 13, 13' Mist trap 14 Relay air blower 15 Second absorption tower 16 Water seal tank 17 Exhaust air blower 18 Silencer (silencer) 19 Exhaust port orifice 20, 20 '
Air compressor 21 Air dryer 22 High frequency high voltage generator 23 Ozone generator 24a Venturi tube 24b Ozone inlet 25 Ozone mixer 26 Ozone filter 27 Ozone water tank 28 Pressure systern 29 Control box

──────────────────────────────────────────────────の Continuation of the front page (51) Int.Cl. ⁷ identification code FI B03C 3/014 B03C 3/01 A // C02F 1/78 (58) Field surveyed (Int.Cl. ⁷ , DB name) B01D 53/38 B01D 53/34 B01D 53/74 B01D 53/77 B03C 3/00 B03C 3/014

Claims (2)

(57) [Claims] 1. A duct for transferring odorous substances released into the atmosphere to an upper part of an absorption tower, a charged ozone water fog generating section,
An ozone water production apparatus comprising an absorption tower, and a water sealing tank provided below the absorption tower, wherein an eliminator provided in the absorption tower is charged with different charges alternately, and air containing the odor component is added to the ozone water production apparatus. From the ozone water supplied by the fog generator, fog of ultra-fine particles, and charged by high frequency high voltage and introduced into the absorption tower, the fog adsorbed the right odor component, adsorbed by a charged eliminator A device for removing odor components in an atmosphere, wherein the device is dropped into the water sealing tank. 2. An apparatus for removing fine dust, dust, radioactive gas or radioactive substance having the same structure as in claim 1 from the atmosphere.