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WO2025057885A1 - Dispositif de traitement de liquide - Google Patents

Dispositif de traitement de liquide Download PDF

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Publication number
WO2025057885A1
WO2025057885A1 PCT/JP2024/032084 JP2024032084W WO2025057885A1 WO 2025057885 A1 WO2025057885 A1 WO 2025057885A1 JP 2024032084 W JP2024032084 W JP 2024032084W WO 2025057885 A1 WO2025057885 A1 WO 2025057885A1
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WO
WIPO (PCT)
Prior art keywords
liquid
treated
fluid
flow path
tank
Prior art date
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Pending
Application number
PCT/JP2024/032084
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English (en)
Japanese (ja)
Inventor
荘一郎 大崎
石原　康博
拓矢 若松
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Nikuni Co Ltd
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Nikuni Co Ltd
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Filing date
Publication date
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Publication of WO2025057885A1 publication Critical patent/WO2025057885A1/fr
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F21/00—Dissolving
    • B01F21/20—Dissolving using flow mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/20—Mixing gases with liquids
    • B01F23/23—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids
    • B01F23/232—Mixing gases with liquids by introducing gases into liquid media, e.g. for producing aerated liquids using flow-mixing means for introducing the gases, e.g. baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/40—Mixing liquids with liquids; Emulsifying
    • B01F23/45—Mixing liquids with liquids; Emulsifying using flow mixing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/42—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions
    • B01F25/421—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path
    • B01F25/422—Static mixers in which the mixing is affected by moving the components jointly in changing directions, e.g. in tubes provided with baffles or obstructions by moving the components in a convoluted or labyrinthine path between stacked plates, e.g. grooved or perforated plates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • B01F25/53—Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle in which the mixture is discharged from and reintroduced into a receptacle through a recirculation tube, into which an additional component is introduced

Definitions

  • the present invention relates to a liquid treatment device.
  • Patent Document 1 discloses an open-system continuous pressurized flow type hydrogen gas-dissolved liquid production apparatus including a liquid flow pipeline for flowing the raw liquid to a gas-dissolved liquid receiver, a pressurizing means provided in the liquid flow pipeline for pressurizing the raw liquid and flowing it through the flow pipeline, at least one gas-liquid mixing section provided in the liquid flow pipeline, connected to a gas container via a gas supply pipe and for mixing hydrogen gas from the gas container into the liquid, and at least one static mixer provided downstream of the gas-liquid mixing section in the liquid flow pipeline for maintaining the pressure of the gas-mixed liquid mixed in the gas-liquid mixing section and promoting dissolution of the gas into the liquid.
  • the liquid is flowed through the liquid flow pipeline at a flow rate of 10 to 40 L/min, and hydrogen gas-dissolved liquid is continuously produced while being pressurized.
  • Patent Document 1 has the risk of poor mixing performance because the fluid passes through the static mixer only once to be mixed. In addition, because the invention described in Patent Document 1 passes through the static mixer only once to be mixed, a large static mixer is required to improve mixing performance, which requires a considerable amount of space to install the equipment.
  • the present invention was made in consideration of these circumstances, and aims to provide a liquid treatment device that can efficiently mix two types of fluids (liquid and gas, or liquid and liquid) in a small space.
  • the liquid treatment device includes, for example, a tank for storing the liquid to be treated, a flow path through which the liquid to be treated flowing out of the tank flows and through which the liquid to be treated is returned to the tank, a pump provided in the flow path and for discharging the liquid to be treated from the tank into the flow path, and a fluid suction unit provided in the flow path upstream of the pump and for mixing the liquid to be treated with a mixed fluid that is a fluid different from the liquid to be treated, the fluid suction unit having a nozzle, a diffuser, and a suction chamber, a supply port communicating with the nozzle and a discharge port communicating with the diffuser are provided in the flow path, the liquid to be treated passes through the nozzle, the suction chamber, and the diffuser, and the mixed fluid is sucked into the suction chamber from the suction port, which is an inlet to the suction chamber, and the inner diameter of the nozzle is set so that the flow rate of the liquid to be treated
  • a fluid suction section and a pump are provided in the flow path, and the mixed fluid is sucked into the fluid suction section (suction chamber) by flowing the liquid to be treated into the fluid suction section. Therefore, two types of fluid (here, water as the liquid to be treated and air as the mixed fluid) can be efficiently mixed using only the fluid suction section. Furthermore, when the flow path is a fluid circulation circuit, the same liquid to be treated can be treated multiple times in the fluid suction section, and the mixed fluid can be efficiently mixed into the liquid to be treated. In this way, two types of fluid can be efficiently mixed with a space-saving and simple configuration.
  • a dissolving tank may be provided downstream of the pump in the flow path, which dissolves the mixed fluid of the liquid to be treated and the mixed fluid under a pressurized environment. This allows the mixed fluid to be efficiently dissolved in the liquid to be treated within the dissolving tank. Even if there is no fluid circulation circuit, the mixed fluid passes through the dissolving tank, improving the mixing efficiency.
  • a mixing section is provided on the flow path downstream of the pump and upstream of the dissolving tank, and mixes the mixed fluid with the liquid to be treated.
  • the mixing section has a casing with a cylindrical side provided in the flow path, and a plurality of plate-like members provided inside the casing, and the plate-like members are provided with a plurality of first through holes through which the liquid to be treated passes, and the plurality of plate-like members may be stacked such that the first through hole of a first plate-like member among the plurality of plate-like members partially overlaps with the first through hole of a second plate-like member adjacent to the first plate-like member. This allows two types of fluids to be mixed efficiently.
  • the liquid treatment device includes, for example, a tank for storing a liquid to be treated, a flow path through which the liquid to be treated flowing out of the tank flows and through which the liquid to be treated returns to the tank, a pump provided in the flow path and for discharging the liquid to be treated from the tank into the flow path, a fluid inlet section provided on the flow path downstream of the pump, the fluid inlet section having a gas tank containing a high-pressure gas that is a mixed fluid and a connection section connecting the gas tank and the flow path, and a flow control section for controlling the flow of the fluid in the flow path.
  • the mixing section having a casing with a cylindrical side provided in the flow path and a plurality of plate-shaped members provided inside the casing, the plate-shaped members having a plurality of first through holes through which the liquid to be treated passes, and the plurality of plate-shaped members are stacked such that the first through hole of a first plate-shaped member among the plurality of plate-shaped members partially overlaps with the first through hole of a second plate-shaped member adjacent to the first plate-shaped member.
  • a pump, a fluid intake section, and a mixing section are provided in the flow path, and by flowing the liquid to be treated and the mixed fluid through the mixing section, two types of fluid (here, water as the liquid to be treated and air as the mixed fluid) can be efficiently mixed.
  • the flow path is a fluid circulation circuit
  • the same liquid to be treated can be treated multiple times in the fluid intake section, and the mixed fluid can be efficiently mixed into the liquid to be treated. In this way, a space-saving liquid treatment device can be created.
  • the system may also include a dissolving tank that is provided downstream of the mixing section of the flow path and dissolves the mixed fluid under a pressurized environment after the liquid to be treated and the mixed fluid are mixed. This allows the mixed fluid to be efficiently dissolved in the liquid to be treated within the dissolving tank. Furthermore, even if there is no fluid circulation circuit, the mixing efficiency is improved by passing the mixed liquid through the dissolving tank.
  • the casing has a first end provided with a third inlet section which is an inlet for the liquid to be treated, and a second end provided with a second outlet section which is an outlet for the liquid to be treated, at both ends of the side surface, and the plate-like member abuts the first end but does not abut the second end and the side surface, and the end of the stacked plate-like members that does not abut the first end may be covered by a third plate-like member. This allows the mixed fluid to be mixed into the liquid to be treated more effectively.
  • the liquid to be treated may be water, and the mixed fluid may be at least one of air, carbon dioxide, and nitrogen.
  • the pump may be a positive displacement pump, and the liquid to be treated may be a non-Newtonian fluid.
  • a positive displacement pump By using a positive displacement pump, a highly viscous fluid may be treated as the liquid to be treated.
  • the pump may be a centrifugal pump, and the liquid to be treated may be a Newtonian fluid. In the case of a Newtonian fluid, a centrifugal pump may be used that is small, lightweight, and usable for a wide range of purposes (water volume, head, etc.).
  • the present invention makes it possible to efficiently mix two types of fluids (liquid and gas, liquid and liquid) with a simple configuration.
  • FIG. 1 is a schematic diagram showing an example of a liquid treatment device 1.
  • FIG. 2 is a cross-sectional view showing an outline of a fluid suction portion 12.
  • FIG. 13 is a graph comparing the amount of mixed fluid (air) mixed into the liquid to be treated (water) with and without the fluid suction portion 12.
  • FIG. 2 is a schematic diagram showing an example of a liquid treatment device 2.
  • 1A is a diagram showing an outline of the mixing section 15, and
  • FIG. 1B is a diagram showing an outline of the plate-like member 15b.
  • 1A is a partial enlarged view of plate-shaped member 15b
  • FIG. 1B is a partial enlarged view of plate-shaped member 15c
  • FIG. 1C is a diagram showing plate-shaped members 15b and 15c stacked alternately.
  • FIG. 13 is a graph comparing the amount of mixed fluid (air) mixed into the liquid to be treated (water) with and without the fluid suction section 12 and the mixing section 15.
  • 13 is a graph comparing the amount of mixed fluid (air) mixed into the liquid to be treated (water) with and without the fluid suction section 12 and the mixing section 15.
  • FIG. 13 is a schematic diagram showing an example of a liquid treatment device 2A having a mixing section 15A according to a modified example.
  • FIG. 2 is a diagram showing an outline of a mixing section 15A.
  • 11 is a graph comparing the amount of mixed fluid (air) mixed into the liquid to be treated (water) between mixing section 15 and mixing section 15A.
  • FIG. 2 is a schematic diagram showing an example of a liquid treatment device 3.
  • FIG. 1 is a diagram showing a schematic diagram of a dissolved air amount measuring device 100.
  • the liquid treatment device of the present invention is a device that mixes a fluid with the liquid to be treated and removes gas contained in the liquid to be treated.
  • First Embodiment 1 is a schematic diagram showing an example of a liquid treatment device 1 according to a first embodiment of the present invention.
  • the liquid treatment device 1 mainly includes a tank 11, a fluid intake unit 12, a pump 13, a dissolving tank 16, a flow rate control valve 14, and a flow path 20.
  • the tank 11 is a container that stores the liquid to be treated.
  • water is used as the liquid to be treated, but various liquids other than water can be used as the liquid to be treated.
  • the tank 11 is provided with an outlet 111.
  • the outlet 111 is connected to a flow path 20.
  • the flow path 20 includes pipes, hoses, joints, etc. through which a fluid (liquid, gas) flows.
  • the flow path 20 constitutes a fluid circulation circuit through which the liquid to be treated that flows out of the tank 11 flows and returns the liquid to be treated to the tank 11.
  • the flow path 20 is provided with a fluid intake section 12, a pump 13, a dissolving tank 16, and a flow rate adjustment valve 14.
  • the fluid suction unit 12 is a component that mixes the fluid with the liquid to be treated, and is provided upstream of the pump 13.
  • FIG. 2 is a cross-sectional view showing an outline of the fluid suction unit 12.
  • the fluid suction unit 12 is cylindrical, and mainly has a first housing 121, a second housing 122, and a third housing 123.
  • the first housing 121 has a supply port 121a for the liquid to be treated.
  • a nozzle 121b is provided on the opposite side of the supply port 121a of the first housing 121.
  • the supply port 121a is connected to the nozzle 121b, and the upstream portion 21a of the outflow path 21 is provided in the supply port 121a.
  • the nozzle 121b is formed so as to taper in the flow direction of the liquid to be treated.
  • the nozzle 121b of the present invention is characterized in that the inner diameter d of the nozzle 121b is set so that the flow rate is 5 m/sec or more and 6 m/sec or less, without abruptly narrowing the inner diameter.
  • the inner diameter d of the nozzle 121b is 18.8 mm or more and 20.6 mm or less. In this way, by widening the inner diameter of the nozzle 121b, the negative pressure can be lowered and an appropriate suction pressure can be achieved (negative pressure of -0.02 MPa to -0.03 MPa).
  • the third housing 123 has an outlet 123a for the liquid to be treated, a reduction section 123b in which the cross section of the hollow section gradually decreases, and a diffuser 123c in which the cross section gradually increases. Note that the reduction section 123b is not essential.
  • the outlet 123a is connected to the reduction section 123b and the diffuser 123c, and the outlet 123a is provided with a downstream section 21b of the outflow path 21.
  • the second housing 122 is provided between the first housing 121 and the third housing 123, and has an intake port 122a.
  • the inside of the second housing 122 is an intake chamber 122b.
  • a fluid to be mixed with the liquid to be treated (mixed fluid) is sucked into the intake chamber 122b from the intake port 122a.
  • the intake port 122a is open to the atmosphere, and air flows into the intake chamber 122b from the intake port 122a as the mixed fluid.
  • the liquid to be treated is supplied as a driving fluid from the supply port 121a and discharged from the discharge port 123a.
  • the liquid to be treated flows into the third housing 123 with its flow rate increased in the nozzle 121b, which reduces the pressure in the suction chamber 122b and causes the mixed fluid (here, air) to be sucked into the suction chamber 122b.
  • the pump 13 is provided downstream of the fluid suction section 12. Because the pump 13 is provided downstream of the fluid suction section 12, there is no need to worry about the pressure during pumping (when sucking in fluid). The downstream side of the pump 13 is pressurized, and it is difficult to stably control the amount of air under pressure, but the upstream side of the pump 13 is basically less affected by pressure, so the suction force can be adjusted only by the nozzle diameter of the fluid suction section 12.
  • the upstream side of the pump 13 of the flow path 20 is the outflow path 21, and the downstream side is the return path 22.
  • the pump 13 flows the treated liquid from the tank 11 to the outflow path 21, and also returns the treated liquid from the return path 22 to the tank 11.
  • a centrifugal pump cascade pump, centrifugal pump, etc.
  • a positive displacement pump can be used for the pump 13. In this embodiment, a centrifugal pump is used for the pump 13.
  • the dissolution tank 16 is provided downstream of the pump 13.
  • the dissolution tank 16 is pressurized to a pressure equal to or higher than atmospheric pressure (e.g., 0.3 MPa or higher), and dissolves the mixed fluid in a pressurized environment. This causes the mixed fluid to be dissolved in the liquid to be treated in the dissolution tank 16. It is desirable for the dissolution tank 16 to have a sufficient volume for mixing two types of fluids.
  • the dissolution ratio in the dissolution tank 16 is increased by retaining the liquid inside the dissolution tank 16 for a period of time between approximately 5 seconds and approximately 24 seconds (see Tables 1 and 2). Therefore, for example, it is desirable for the inflow speed of the fluid into the dissolution tank 16 to be approximately 2 m/sec or higher, and for the height dimension of the dissolution tank 16 to be between two and five times the inner diameter dimension (see Tables 1 to 3).
  • Table 1 shows the relationship between the shape of the dissolving tank 16 and the dissolution ratio
  • Table 2 shows the relationship between the shape of the dissolving tank 16 and the residence time of the fluid in the dissolving tank
  • Table 3 shows the relationship between the shape of the dissolving tank 16 and the inflow rate.
  • the dissolving tank 16 with an internal volume of 3.7 L has an inner diameter of 100 mm and a height of 450 mm
  • the dissolving tank 16 with an internal volume of 7.8 L has an inner diameter of 110 mm and a height of 450 mm.
  • the diameters of the ejection nozzles at the inlet of the dissolving tank 16 are 12.7 mm for 10A, 16.1 mm for 15A, 21.6 mm for 20A, and 27.6 mm for 25A, respectively.
  • Tables 1 to 3 show the results when the flow rate of the liquid flowing into the dissolution tank 16 from the inlet was set to 20 l/min, 30 l/min, 40 l/min, 50 l/min, 60 l/min, and 70 l/min.
  • a boundary layer between the liquid and the gas exists in the dissolution tank 16.
  • a bowl-shaped plate-like member can be provided in the dissolution tank 16 to generate a turbulent bubble vortex in the dissolution tank 16. It is also possible to generate a turbulent bubble vortex in the dissolution tank 16 by increasing the flow rate of the liquid flowing into the dissolution tank 16.
  • the gas is sufficiently dissolved in the dissolution tank 16, and undissolved gas is not discharged from the dissolution tank 16. This makes it possible to minimize the amount of gas consumed. If the gas is discharged undissolved, the only way to increase the dissolution ratio is to increase the amount of gas injected, which increases the amount of gas consumed. However, if the dissolution ratio in the dissolution tank 16 is high, the amount of gas injected can be reduced, i.e., the amount of gas consumed can be reduced.
  • the flow rate control valve 14 is provided downstream of the dissolution tank 16.
  • the upstream side of the flow path 20 from the dissolution tank 16 is referred to as the upstream section 22a
  • the downstream side of the flow rate control valve 14 is referred to as the downstream section 22b. It is also possible to provide a pressure gauge in the upstream section 22a and a flow meter in the downstream section 22b.
  • the dissolving tank 16 is not essential. If the mixed fluid is a gas, the mixed fluid will dissolve in the liquid being treated without the dissolving tank 16, but it is desirable to provide the dissolving tank 16 for efficient dissolution. Also, if both the liquid being treated and the mixed fluid are liquids, the dissolving tank 16 is not necessary. If the dissolving tank 16 is provided, the flow rate control valve 14 is installed downstream of the dissolving tank 16.
  • the liquid to be treated (here, water) flows from the tank 11 into the flow path 20.
  • the liquid to be treated that flows into the upstream section 21a flows into the downstream section 21b through the fluid suction section 12.
  • the liquid to be treated flows through the hollow section of the first housing 121, the hollow section of the second housing 122 (suction chamber 122b), and the hollow section of the third housing 123 in that order, and the flow of the liquid to be treated causes the mixed fluid (here, air) to flow into the suction chamber 122b through the suction port 122a.
  • the liquid to be treated and the mixed fluid are mixed, and the mixed liquid of the liquid to be treated and the mixed fluid flows into the diffuser 123c.
  • the boundary layer is easily separated due to the flow of the fluid from the low pressure side to the high pressure side, so the flow of the mixed liquid of the liquid to be treated and the mixed fluid in the diffuser 123c becomes unstable. As a result, the mixed fluid turns into fine bubbles, and the fine bubbles are mixed into the liquid being treated.
  • the flow path 20 constitutes a fluid circulation circuit
  • the mixed liquid treated in the fluid intake section 12 is pressurized and dissolved in the dissolution tank 16, and after being returned to atmospheric pressure, returns to the tank 11, flows through the flow path 20 again, and is treated in the fluid intake section 12.
  • the same liquid to be treated can be treated multiple times in the fluid intake section 12, and the mixed fluid can be efficiently mixed into the liquid to be treated. Even in the case of not using a fluid circulation circuit, the mixing efficiency is improved by passing the mixed liquid through the dissolution tank 16.
  • Figure 3 is a graph comparing the amount of mixed fluid (air) mixed into the liquid being treated (water) with and without the fluid suction section 12.
  • the dotted line shows the air dissolution ratio (described in detail later) when only the pump 13 is used (when the fluid suction section 12 is not provided), and the solid line shows the air dissolution ratio when the fluid suction section 12 and pump 13 are provided.
  • the dissolution ratio is an index expressed as the ratio between the amount of dissolved air, which is the amount of fine bubbles when released to the atmosphere, and the amount of saturated air; the higher the dissolution ratio, the more gas is dissolved in the liquid being treated.
  • the vertical axis indicates the dissolution ratio (%)
  • the horizontal axis indicates the amount of air injected (NL/min).
  • NL is normal liters.
  • the amount of air injected is the amount of air injected into the treated liquid, and can also be expressed as the ratio (%) of the amount of air injected to the amount of treated liquid passing through the pump 13 (the discharge amount of the pump 13). For example, in FIG. 3, the vertical axis indicates the dissolution ratio (%), and the horizontal axis indicates the amount of air injected (NL/min). NL is normal liters.
  • the amount of air injected is the amount of air injected into the treated liquid, and can also be expressed as the ratio (%) of the amount of air injected to the amount of treated liquid passing through the pump 13 (the discharge amount of the pump 13). For example, in FIG.
  • the ratio is 0.9% when the amount of air injected is 5 NL/min, 1.9% when the amount of air injected is 10 NL/min, 2.8% when the amount of air injected is 15 NL/min, 3.8% when the amount of air injected is 20 NL/min, 4.8% when the amount of air injected is 25 NL/min, and 6.6% when the amount of air injected is 35 NL/min.
  • FIG. 15 is a diagram that shows a schematic diagram of a method for measuring the amount of dissolved air.
  • the dissolved air amount measuring device 100 mainly has a dissolution tank 16, flow paths 20 and 106, an air reservoir 103, a water reservoir 104, and a pressure release valve 105.
  • the flow path 102 is connected to the flow path 20 downstream of the dissolving tank 16 provided in the flow path 20 of the liquid treatment device 1.
  • the liquid to be treated flowing through the flow path 20 is pressurized and dissolved in the dissolving tank 16, large undissolved air bubbles are separated and removed, and the liquid to be treated from which the undissolved air bubbles have been separated and removed is allowed to flow through the flow path 102.
  • the liquid to be treated flowing through the flow path 102 is depressurized to atmospheric pressure by the pressure release valve 105 and released into the air tank 103.
  • air bubbles are separated from the liquid to be treated, and the air bubbles float and accumulate at the top of the air tank 103, while the liquid to be treated accumulates in the water tank 104 connected by the flow path 106.
  • the pressure release valve 105 adjusts the amount (speed) of the liquid to be treated released so that the air bubbles do not flow into the water tank 104.
  • the amount of air in the air tank 103 is measured.
  • the amount of air in the air tank 103 is the amount of air that has precipitated from the 1 L of the liquid to be treated, i.e., the amount of dissolved air.
  • the amount of air separated from the treated liquid is converted into a dissolution ratio based on the water temperature at the time of measurement.
  • the dissolution ratio is expressed as the ratio of the amount of dissolved air to the amount of saturated air at the temperature at which the amount of dissolved air was measured, as shown in formula (1).
  • two types of fluids here, water, which is the liquid to be treated, and air, which is the mixed fluid
  • the liquid treatment device 1 can be simply configured.
  • the same liquid to be treated can be treated multiple times in the fluid intake section 12, and the mixed fluid can be efficiently mixed into the liquid to be treated.
  • the negative pressure can be lowered and the mixed fluid can be sucked in at an appropriate suction pressure (negative pressure of -0.02 MPa to -0.03 MPa). If the suction force of the mixed fluid is too low, the amount of the mixed fluid sucked in decreases and the dissolution ratio deteriorates.
  • the suction force of the mixed fluid is too high, depending on the type of pump 13 (for example, in the case of a centrifugal pump), the pump 13 itself may cause an airlock (the pump 13 cannot pump water) in relation to the amount of mixed fluid sucked in. Therefore, by setting the flow velocity of the liquid to be treated at an appropriate value, the suction force of the mixed fluid can be adjusted and the mixed fluid can be efficiently mixed into the liquid to be treated.
  • air is supplied to the fluid intake section 12 as a mixed fluid, and the air is dissolved in the water, which is the liquid to be treated, but the gas is not limited to air.
  • gases such as carbon dioxide or nitrogen may be supplied to the fluid intake section 12, and these gases may be dissolved in the liquid to be treated, or the air in the liquid to be treated may be replaced with carbon dioxide, nitrogen, etc.
  • the mixed fluid is not limited to gas.
  • the mixed fluid may be a liquid.
  • the liquid to be treated may be water
  • the mixed fluid may be oil
  • the oil may be dissolved in the water. Water and oil do not mix easily, but by using the liquid treatment device 1, fine oil particles can be mixed into the water.
  • the liquid to be treated is water, but the liquid to be treated is not limited to water.
  • the liquid to be treated may be oil.
  • the liquid to be treated may also be a non-Newtonian fluid.
  • the mixed fluid can be nitrogen and the oxygen in the mayonnaise can be replaced with nitrogen in the liquid treatment device 1, thereby improving the shelf life of the mayonnaise.
  • oxidation can be prevented by replacing the oxygen contained in the dairy product with nitrogen.
  • the fluid is mixed into the liquid to be treated using the fluid suction unit 12, but the method of mixing the fluid into the liquid to be treated is not limited to this.
  • a liquid treatment device 2 of the present invention will be described below. Note that the same parts as those in the first embodiment are given the same reference numerals and descriptions thereof will be omitted.
  • FIG. 4 is a schematic diagram showing an example of a liquid treatment device 2 according to a second embodiment of the present invention.
  • the liquid treatment device 2 mainly comprises a tank 11, a fluid intake section 12, a pump 13, a mixing section 15, a dissolving tank 16, a flow control valve 14, and a flow path 20.
  • the flow path 20 is provided with the fluid intake section 12, the pump 13, the flow control valve 14, the mixing section 15, and the dissolving tank 16.
  • the mixing section 15 is a component that mixes the fluid into the liquid being treated, and is provided downstream of the pump 13. Pressure loss occurs in the mixing section 15, and if the mixing section 15 were provided upstream of the pump 13, the mixing section 15 would create resistance, making it difficult to adjust the suction force, so the mixing section 15 is provided downstream of the pump 13.
  • the dissolving tank 16 is provided downstream of the mixing section 15, and the flow control valve 14 is provided downstream of the dissolving tank 16.
  • the upstream side of the mixing section 15 of the flow path 20 is referred to as the upstream section 22c
  • the downstream side of the mixing section 15 and the upstream side of the dissolving tank 16 is referred to as the midstream section 22d
  • the downstream side of the flow control valve 14 is referred to as the downstream section 22b.
  • a pressure gauge may be provided in the upstream section 22c, and a flow meter may be provided in the downstream section 22b.
  • FIG. 5(A) is a diagram showing an outline of the mixing section 15.
  • the mixing section 15 mainly has a casing 15a and multiple plate-shaped members 15b and 15c.
  • the casing 15a is cylindrical and is provided in the flow path 20 (here, the return path 22).
  • the casing 15a has a cylindrical side surface 15j, and an end 15h (corresponding to the first end of the present invention) and an end 15i (corresponding to the second end of the present invention) covering both ends of the side surface 15j.
  • One end 15h is provided with an inlet 15e through which the liquid to be treated and the fluid sucked into the fluid suction section 12 flow in, and the other end 15i is provided with an outlet 15f through which the liquid to be treated and the fluid sucked into the fluid suction section 12 flow out.
  • Plate-shaped members 15b and 15c are provided inside casing 15a. In this embodiment, two each of plate-shaped members 15b and 15c are provided, but the number of plate-shaped members 15b and 15c is not limited to this. Plate-shaped members 15b and 15c are disk-shaped and have the same peripheral size. Plate-shaped members 15b and 15c are alternately stacked. Note that plate-shaped members 15b and 15c are not limited to being disk-shaped, and may have a rectangular shape in plan view (shape when viewed along the plate thickness direction).
  • Plate-shaped members 15b and 15c are arranged to abut against end 15h but not against end 15i. Furthermore, plate-shaped members 15b and 15c are arranged not to abut against side surface 15j that connects end 15h and end 15i. Furthermore, one end of plate-shaped members 15b and 15c (the end not abutting end 15h) is covered by plate-shaped member 15d.
  • Figure 5 (B) is a diagram showing an outline of plate-shaped member 15b.
  • Each plate-shaped member 15b is provided with a plurality of through holes 15g (corresponding to the first through holes of the present invention) through which the liquid to be treated passes.
  • the through holes 15g are, for example, hexagonal in shape.
  • the through holes 15g are provided on the entire surface of plate-shaped member 15b.
  • plate-shaped member 15c also has a plurality of through holes 15g (on the entire surface) in the same manner as plate-shaped member 15b.
  • Fig. 6(A) is a partial enlarged view of plate-shaped member 15b (corresponding to the first plate-shaped member of the present invention)
  • Fig. 6(B) is a partial enlarged view of plate-shaped member 15c (corresponding to the second plate-shaped member of the present invention)
  • Fig. 6(C) is a diagram showing plate-shaped members 15b and 15c stacked alternately.
  • plate-shaped member 15c is shown by a dotted line in Fig. 6.
  • the difference between plate-shaped member 15b and plate-shaped member 15c is the positional relationship between the periphery of plate-shaped member 15b, 15c and through-hole 15g (the position of through-hole 15g).
  • the position of through-hole 15g in plate-shaped member 15b and the position of through-hole 15g in plate-shaped member 15c are shifted by half the pitch of through-hole 15g in the horizontal direction of FIG. 6 and by 1 ⁇ 4 the pitch of through-hole 15g in the vertical direction of FIG. 6.
  • through-hole 15g of plate-shaped member 15b and through-hole 15g of plate-shaped member 15c partially overlap.
  • the treated liquid and mixed fluid flowing in from the inlet 15e are stirred through the through-hole 15g and flow from the periphery of the plate-like members 15b, 15c into the hollow part of the casing 15a.
  • the flow of the fluid becomes unstable as it passes through the through-hole 15g, and the treated liquid and the mixed fluid are mixed.
  • the mixed fluid then flows out from the outlet 15f.
  • the liquid to be treated (here, water) flows from the tank 11 into the flow path 20 (upstream section 21a), and then flows through the fluid suction section 12 into the downstream section 21b.
  • air (here) flows into the suction chamber 122b via the suction port 122a, where the liquid to be treated and the mixed fluid are mixed, and the mixed fluid turns into fine bubbles in the diffuser 123c and is mixed into the liquid to be treated.
  • the liquid to be treated flows into the mixing section 15 with fine bubbles mixed in the fluid intake section 12.
  • the flow of the fluid (mixture of the liquid to be treated and the mixed fluid) that has flowed into the mixing section 15 becomes unstable as it passes through the through-hole 15g, and the mixed fluid that has become fine bubbles is further mixed into the liquid to be treated.
  • the flow path 20 forms a fluid circulation circuit, and the liquid to be treated is treated in the fluid intake section 12 and the mixing section 15, pressurized and dissolved in the dissolution tank 16, and returned to atmospheric pressure, after which it returns to the tank 11, flows again through the flow path 20, and is treated in the fluid intake section 12 and the mixing section 15.
  • the same liquid to be treated can be treated multiple times in the fluid intake section 12 and the mixing section 15, and the mixed fluid can be efficiently mixed into the liquid to be treated.
  • Figure 7 is a graph comparing the amount of mixed fluid (air) mixed into the treated liquid (water) with and without the fluid intake section 12 and the mixing section 15.
  • the dotted line shows the air dissolution ratio in the case of the pump 13, dissolving tank 16, and flow rate adjustment valve 14 (when the fluid intake section 12 and the mixing section 15 are not provided), and the solid line shows the air dissolution ratio when the fluid intake section 12, pump 13, mixing section 15, dissolving tank 16, and flow rate adjustment valve 14 are provided.
  • the discharge pressure of the pump 13 in Figure 7 is the same as the pressure in the dissolving tank 16, which is 0.5 MPa.
  • Figure 8 is a graph comparing the amount of mixed fluid (air) mixed into the treated liquid (water) with and without the mixing unit 15.
  • the dotted line shows the air dissolution ratio in the case of the fluid intake unit 12, pump 13, dissolving tank 16, and flow rate adjustment valve 14 (when the mixing unit 15 is not provided), and the solid line shows the air dissolution ratio in the case of the fluid intake unit 12, pump 13, mixing unit 15, dissolving tank 16, and flow rate adjustment valve 14.
  • the discharge pressure of the pump 13 in Figure 8 is the same as the pressure in the dissolving tank 16, which is 0.3 MPa.
  • two types of fluids can be mixed efficiently by providing the fluid intake section 12 and the mixing section 15.
  • the mixed fluid can be efficiently dissolved in the liquid to be treated.
  • the same liquid to be treated can be treated multiple times in the fluid intake section 12 and the mixing section 15, and the mixed fluid can be efficiently mixed into the liquid to be treated.
  • the through hole 15g is hexagonal in shape, but the through hole 15g is not limited to a hexagonal shape.
  • the through hole 15g may be a polygonal shape such as a diamond shape, a rectangle shape, a triangle shape, or a pentagon shape, or may be a circle shape, an ellipse shape, or the like.
  • the mixing section 15 has two types of plate-like members 15b and 15c, but the mixing section 15 may have three or more types of plate-like members. Also, in the mixing section 15, it is sufficient that different types of plate-like members are stacked adjacent to each other.
  • plate-shaped members 15b and 15c are provided so as to abut against end 15h and not to abut against end 15i and side 15j, but the form in which plate-shaped members 15b and 15c are provided is not limited to this.
  • plate-shaped members 15b and 15c may be provided so as to abut against side 15j and not to abut against ends 15h and 15i.
  • the liquid to be treated is water and the mixed fluid is air, but as in the first embodiment, the liquid to be treated is not limited to water and the mixed fluid is not limited to air.
  • Fig. 9 is a schematic diagram showing an example of a liquid treatment device 2A having a mixing section 15A according to a modified example.
  • the liquid treatment device 2A differs from the liquid treatment device 2 only in the mixing section 15A.
  • FIG. 10 is a diagram showing an outline of the mixing section 15A.
  • the mixing section 15A is mainly composed of two plate-like members 15b and 15c stacked on top of each other, and two plate-like members 15c stacked on top of the two plate-like members 15b.
  • the through hole 15g of the plate-shaped member 15b and the through hole 15g of the plate-shaped member 15c partially overlap, so the flow of the fluid (mixture of the liquid to be treated and the mixed fluid) passing through the through hole 15g becomes unstable, and the liquid to be treated and the mixed fluid are mixed.
  • Figure 11 is a graph comparing the amount of mixed fluid (air) mixed into the treated liquid (water) between mixing unit 15 and mixing unit 15A. As shown above, mixing unit 15 and mixing unit 15A have similar functions. Note that the discharge pressure of pump 13 in Figure 11 is the same as the pressure in dissolving tank 16, 0.5 MPa.
  • mixing section 15A the number of plate-like members 15b and 15c in mixing section 15A is not limited to two. Furthermore, mixing section 15A may have three or more types of plate-like members. Also, in mixing section 15A, it is sufficient to stack plate-like members of the same type.
  • the fluid is mixed into the liquid to be treated using the fluid suction unit 12, but the method of mixing the fluid into the liquid to be treated is not limited to this.
  • a liquid treatment device 3 of the present invention will be described below. Note that the same parts as those in the first and second embodiments are given the same reference numerals and descriptions thereof will be omitted.
  • FIG. 12 is a schematic diagram showing an example of a liquid treatment device 3 according to a third embodiment of the present invention.
  • the liquid treatment device 3 mainly includes a tank 11, a pump 13, a mixing section 15, a dissolving tank 16, a flow control valve 14, a flow path 20, and a fluid inlet section 30.
  • the fluid inlet section 30 is provided downstream of the pump 13 in the flow path 20 (the return path 22).
  • the fluid inlet section 30 mainly includes a gas tank 31 and a connection section 32.
  • the gas tank 31 is filled with high-pressure gas.
  • High-pressure gas includes compressed gas and liquefied gas.
  • Compressed gas is defined as a compressed gas whose pressure is 1 MPa or more at normal temperatures, and whose actual pressure is 1 MPa or more, or whose pressure is 1 MPa or more at 35°C.
  • compressed gas include hydrogen, oxygen, and nitrogen.
  • Liquefied gas is defined as a liquefied gas whose pressure is 0.2 MPa or more at normal temperatures, and whose actual pressure is 0.2 MPa or more, or whose temperature when the pressure is 0.2 MPa is 35°C or less.
  • liquefied gas include carbon dioxide, ammonia, and nitrogen. In this embodiment, carbon dioxide and nitrogen are used as the fluid (mixed fluid) to be mixed with the liquid to be treated.
  • connection part 32 is a member that connects the gas tank 31 and the flow path 20 (return path 22), and includes piping, hoses, joints, etc.
  • the upstream side of the connection part 32 of the return path 22 is the upstream part 22e, and the downstream side is the midstream part 22f.
  • the liquid to be treated (here, water) flows from the tank 11 into the flow path 20.
  • the liquid to be treated that flows into the upstream section 22a is mixed with the mixed fluid sealed in the gas tank 31 via the connection section 32, and flows into the midstream section 22f as a mixed liquid.
  • the mixed liquid then flows into the mixing section 15, and the flow becomes unstable as it passes through the through hole 15g.
  • the high-pressure gas turns into fine bubbles, and the fine bubbles are mixed into the water.
  • the flow path 20 constitutes a fluid circulation circuit, and after being treated in the mixing section 15 and being pressurized and dissolved in the dissolution tank 16, the liquid to be treated returns to the tank 11, flows through the flow path 20 again, and is treated in the mixing section 15.
  • the same liquid to be treated can be treated multiple times in the mixing section 15, and the mixed fluid can be efficiently mixed into the liquid to be treated.
  • Figure 13 is a graph comparing the amount of mixed fluid (here, carbon dioxide) dissolved in the treated liquid (water) with and without the mixing unit 15.
  • the square plots show the concentration of carbon dioxide (carbon dioxide gas) when the pump 13, dissolving tank 16, and flow rate control valve 14 are provided (when the mixing unit 15 is not provided), and the circle plots show the concentration of carbon dioxide when the pump 13, mixing unit 15, dissolving tank 16, and flow rate control valve 14 are provided.
  • Figure 13 shows that when the mixing unit 15 is provided, the carbon dioxide gas concentration is higher than when the mixing unit 15 is not provided, that is, more carbon dioxide is dissolved in the water.
  • the discharge pressure of the pump 13 in Figure 13 is the same as the pressure in the dissolving tank 16 (0.4 MPa), the pressure of carbon dioxide in the gas tank 31 is 0.5 MPa, and the injection rate of carbon dioxide is 3 NL/min.
  • Figure 14 is a graph comparing the amount of mixed fluid (here, nitrogen) mixed into the liquid to be treated (water) with and without the mixing section 15.
  • Figure 14 (B) is an enlarged view of a portion of Figure 14 (A).
  • nitrogen is replaced by nitrogen (nitrogen replacement)
  • the amount of dissolved oxygen in the liquid to be treated decreases. Therefore, by measuring the amount of dissolved oxygen, the amount of nitrogen mixed in can be indirectly measured. From Figure 14, it was found that when the mixing section 15 is present, the amount of dissolved oxygen decreases more quickly than when the mixing section 15 is not present, that is, more nitrogen is mixed into the water.
  • the discharge pressure of the pump 13 in Figure 14 is the same as the pressure in the dissolving tank 16 (0.4 MPa), the nitrogen pressure in the gas tank 31 is 0.5 MPa, and the nitrogen injection rate is 3 NL/min.
  • the provision of the mixing section 15 allows two types of fluids to be mixed efficiently.
  • the mixed fluid can be efficiently dissolved or replaced in the liquid to be treated.
  • the flow path 20 is a fluid circulation circuit through which the treated liquid flowing out of the tank 11 flows and also returns the treated liquid to the tank 11, so the same treated liquid can be treated multiple times in the mixing section 15, and the mixed fluid can be efficiently mixed into the treated liquid.
  • the liquid to be treated is water and the mixed fluid is air, but as with the first and second embodiments, the liquid to be treated is not limited to water and the mixed fluid is not limited to air.
  • orthogonal is not limited to cases where the two are strictly the same, but is a concept that includes errors and deformations that do not lose their identity.
  • approximately orthogonal is not limited to cases where the two are strictly orthogonal, but is a concept that includes cases where the two can be regarded as the same as orthogonal.
  • orthogonal, parallel, coincident, etc. it includes not only cases where the two are strictly orthogonal, parallel, coincident, etc., but also cases where the two are approximately parallel, approximately orthogonal, approximately coincident, etc.
  • “nearby” means including a certain range (which can be determined arbitrarily) near a reference position.
  • “near an end” is a concept indicating a certain range of area near the end, which may or may not include the end.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)

Abstract

L'invention concerne un dispositif de traitement de liquide ayant une configuration simple.　Le dispositif de traitement de liquide comprend : un réservoir qui stocke un liquide à traiter ; un chemin d'écoulement à travers lequel le liquide à traiter s'écoulant hors du réservoir s'écoule et à travers lequel le liquide à traiter est remis en circulation vers le réservoir ; une pompe qui est disposée dans le chemin d'écoulement et qui amène le liquide à traiter à s'écouler hors du réservoir dans le chemin d'écoulement ; et une unité d'aspiration de fluide qui est disposée sur le côté amont de la pompe dans le chemin d'écoulement et qui mélange un fluide de mélange, qui est un fluide différent du liquide à traiter, avec le liquide à traiter. L'unité d'aspiration de fluide comprend une buse, un diffuseur et une chambre d'aspiration, et un orifice d'alimentation communiquant avec la buse et un orifice d'évacuation communiquant avec le diffuseur sont disposés dans le chemin d'écoulement. Lorsque le liquide à traiter passe à travers la buse, la chambre d'aspiration et le diffuseur, le fluide de mélange est aspiré dans la chambre d'aspiration par un orifice d'aspiration, qui est une entrée vers la chambre d'aspiration. Le diamètre interne de la buse est défini de telle sorte que la vitesse d'écoulement du liquide à traiter est supérieur ou égal à 5 m/s et inférieur ou égal à 6 m/sec.
PCT/JP2024/032084 2023-09-11 2024-09-06 Dispositif de traitement de liquide Pending WO2025057885A1 (fr)

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JP2023147230A JP2025040348A (ja) 2023-09-11 2023-09-11 液体処理装置

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Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003210961A (ja) * 2002-01-25 2003-07-29 Max Co Ltd 気液混合器
JP2007000844A (ja) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd 微細気泡発生装置
JP2008006397A (ja) * 2006-06-30 2008-01-17 Aisin Seiki Co Ltd 微細気泡発生装置
JP2009226328A (ja) * 2008-03-24 2009-10-08 Daikin Ind Ltd 気体溶解器
JP2010155212A (ja) * 2008-12-26 2010-07-15 Daikin Ind Ltd 微細気泡発生装置
WO2011049215A1 (fr) * 2009-10-22 2011-04-28 エウレカ・ラボ株式会社 Dispositif de traitement permettant de disperser, dissoudre, rendre compatibles ou émulsionner un gaz et un liquide ou deux liquides
JP2011110468A (ja) * 2009-11-25 2011-06-09 Panasonic Electric Works Co Ltd 微細気泡発生装置
JP2014064982A (ja) * 2012-09-25 2014-04-17 Ihi Shibaura Machinery Corp オゾン水生成装置
WO2014119775A1 (fr) * 2013-01-31 2014-08-07 株式会社 横田製作所 Cuve de dissolution de gaz-liquide et générateur de microbulles
WO2016068055A1 (fr) * 2014-10-27 2016-05-06 株式会社Ｍｇグローアップ Dispositif de production d'une source gazeuse à haute concentration
JP2019018187A (ja) * 2017-07-21 2019-02-07 株式会社イ・ジ・ユ 水素含有率の高い水を製造するシステム
WO2019163105A1 (fr) * 2018-02-23 2019-08-29 エコデザイン株式会社 Appareil et méthode de génération de solution d'ozone
US20200261865A1 (en) * 2019-02-15 2020-08-20 The Board Of Trustees Of The University Of Alabama Confined tube aspiration aeration devices and systems
JP2022030612A (ja) * 2020-08-07 2022-02-18 パナソニックＩｐマネジメント株式会社 微細気泡発生装置

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003210961A (ja) * 2002-01-25 2003-07-29 Max Co Ltd 気液混合器
JP2007000844A (ja) * 2005-06-27 2007-01-11 Matsushita Electric Works Ltd 微細気泡発生装置
JP2008006397A (ja) * 2006-06-30 2008-01-17 Aisin Seiki Co Ltd 微細気泡発生装置
JP2009226328A (ja) * 2008-03-24 2009-10-08 Daikin Ind Ltd 気体溶解器
JP2010155212A (ja) * 2008-12-26 2010-07-15 Daikin Ind Ltd 微細気泡発生装置
WO2011049215A1 (fr) * 2009-10-22 2011-04-28 エウレカ・ラボ株式会社 Dispositif de traitement permettant de disperser, dissoudre, rendre compatibles ou émulsionner un gaz et un liquide ou deux liquides
JP2011110468A (ja) * 2009-11-25 2011-06-09 Panasonic Electric Works Co Ltd 微細気泡発生装置
JP2014064982A (ja) * 2012-09-25 2014-04-17 Ihi Shibaura Machinery Corp オゾン水生成装置
WO2014119775A1 (fr) * 2013-01-31 2014-08-07 株式会社 横田製作所 Cuve de dissolution de gaz-liquide et générateur de microbulles
WO2016068055A1 (fr) * 2014-10-27 2016-05-06 株式会社Ｍｇグローアップ Dispositif de production d'une source gazeuse à haute concentration
JP2019018187A (ja) * 2017-07-21 2019-02-07 株式会社イ・ジ・ユ 水素含有率の高い水を製造するシステム
WO2019163105A1 (fr) * 2018-02-23 2019-08-29 エコデザイン株式会社 Appareil et méthode de génération de solution d'ozone
US20200261865A1 (en) * 2019-02-15 2020-08-20 The Board Of Trustees Of The University Of Alabama Confined tube aspiration aeration devices and systems
JP2022030612A (ja) * 2020-08-07 2022-02-18 パナソニックＩｐマネジメント株式会社 微細気泡発生装置

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