WO2018225510A1 - Dispositif et procédé de formation de bulles d'air - Google Patents

Dispositif et procédé de formation de bulles d'air Download PDF

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Publication number
WO2018225510A1
WO2018225510A1 PCT/JP2018/019795 JP2018019795W WO2018225510A1 WO 2018225510 A1 WO2018225510 A1 WO 2018225510A1 JP 2018019795 W JP2018019795 W JP 2018019795W WO 2018225510 A1 WO2018225510 A1 WO 2018225510A1
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WO
WIPO (PCT)
Prior art keywords
gas
bubble
tubular body
mixed fluid
liquid
Prior art date
Application number
PCT/JP2018/019795
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English (en)
Japanese (ja)
Inventor
崇 五島
蓮 高倉
天 深谷
Original Assignee
国立大学法人 鹿児島大学
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Application filed by 国立大学法人 鹿児島大学 filed Critical 国立大学法人 鹿児島大学
Priority to JP2019523436A priority Critical patent/JP7094026B2/ja
Publication of WO2018225510A1 publication Critical patent/WO2018225510A1/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
    • 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
    • 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

Definitions

  • the present invention relates to a bubble forming apparatus and a bubble forming method.
  • Patent Document 1 discloses a bubble forming device that uses a tank to obtain a gas-liquid mixed fluid in which bubbles are dispersed in a liquid.
  • gas and liquid are pressurized in the tank, whereby the gas is dissolved in the liquid in the tank.
  • the gas dissolved in the liquid appears as bubbles in the liquid.
  • Patent Document 2 discloses a bubble forming device that uses a porous member to obtain a gas-liquid mixed fluid in which bubbles are dispersed in a liquid. This apparatus forms a gas-liquid mixed fluid in which bubbles are dispersed in a liquid by ejecting gas into the liquid through a porous member, and discharges the formed gas-liquid mixed fluid to the outside through a tubular discharge portion.
  • the bubble forming apparatus disclosed in Patent Document 1 alternately repeats pressurization of the tank and release to the atmospheric pressure by using the pressure regulating valve, and the gas-liquid is discharged from the tank when the pressure in the tank is increased to the atmospheric pressure. Release the mixed fluid. For this reason, during the period in which the tank is pressurized, the release of the gas-liquid mixed fluid is interrupted, and the gas-liquid mixed fluid cannot be obtained continuously.
  • Patent Document 2 can continuously discharge the gas-liquid mixed fluid from the discharge part, but there is room for improvement with respect to the refinement of bubbles contained in the gas-liquid mixed fluid.
  • Patent Document 2 does not disclose any specific configuration of the discharge part, and it is difficult to say that the discharge part substantially exhibits the action of miniaturizing bubbles.
  • An object of the present invention is to provide a bubble forming apparatus and a bubble forming method capable of continuously obtaining a gas-liquid mixed fluid containing bubbles refined by dissolution.
  • a bubble forming apparatus includes: Forming a gas-liquid mixed fluid including a liquid and bubbles dispersed in the liquid, and discharging the formed gas-liquid mixed fluid; Tubular body for bubble miniaturization that has a tubular shape with both ends opened, and that introduces the gas-liquid mixed fluid discharged from the discharge portion from one end and guides the introduced gas-liquid mixed fluid to the other end And comprising Due to the pressure at which the gas-liquid mixed fluid is discharged from the discharge portion, the internal pressure of the bubble miniaturization tubular body is increased to such an extent that the bubbles are dissolved in the liquid, and the bubbles of the bubbles due to the increased internal pressure are Dissolution in the liquid proceeds over a period in which the gas-liquid mixed fluid flows through the bubble miniaturization tubular body, whereby the bubbles contained in the gas-liquid mixed fluid are refined in the bubble miniaturization tubular body. Is done.
  • the bubble miniaturization tubular body is: When the cross-sectional area of the portion where the gas-liquid mixed fluid flows in the bubble miniaturization tubular body is X, and the path length of the bubble miniaturization tubular body along the flow path of the gas-liquid mixed fluid is Y, Y /
  • the length scale defined by X may be 250 [1 / mm] or more.
  • the bubble miniaturization tubular body is: A curved shape may be formed so that a centrifugal force that forms a Dean vortex in the gas-liquid mixed fluid acts on the gas-liquid mixed fluid inside the bubble miniaturization tubular body.
  • the bubble miniaturization tubular body may have a shape of being wound a plurality of times in a coil shape.
  • the bubble miniaturization tubular body By introducing the gas-liquid mixed fluid into the bubble miniaturization tubular body under the condition that the discharge part increases the internal pressure to a value higher than atmospheric pressure and 0.3 MPa or less, the bubble miniaturization tubular body The average diameter of the bubbles may be reduced to 1/5 or less.
  • a plurality of the bubble refining tubular bodies are connected to the discharge section so that the gas-liquid mixed fluid discharged from the discharge section flows in parallel through the plurality of bubble refining tubular bodies. Also good.
  • the discharge part is You may have the structure which can each adjust independently the flow volume of the said liquid which comprises the said gas-liquid mixed fluid, and the gas which comprises the said bubble of the said gas-liquid mixed fluid.
  • Temperature adjusting means for adjusting the temperature of the gas-liquid mixed fluid via the bubble miniaturization tubular body May be further provided.
  • the bubble forming method includes: Forming a gas-liquid mixed fluid including a liquid and bubbles dispersed in the liquid; and A bubble refining step of passing the gas-liquid mixed fluid formed in the pre-process through a bubble refining tubular body having a tubular shape with both ends opened, and In the bubble refinement step, the internal pressure of the bubble refinement tubular body is increased and increased by the pressure at which the gas-liquid mixed fluid is introduced into the bubble refinement tubular body so that the bubbles are dissolved in the liquid.
  • the bubbles contained in the gas-liquid mixed fluid are caused to progress by dissolving the bubbles in the liquid by the internal pressure generated over a period in which the gas-liquid mixed fluid flows through the bubble miniaturization tubular body. It refines in the tubular body for bubble refinement.
  • the average diameter may be reduced to 1/5 or less.
  • dissolution can be obtained continuously.
  • FIG. 1 is a conceptual diagram illustrating a configuration of a bubble forming device according to Embodiment 1.
  • FIG. 4 is a conceptual diagram illustrating a configuration of a bubble forming apparatus according to a second embodiment.
  • FIG. 5 is a conceptual diagram illustrating a configuration of a bubble forming apparatus according to a third embodiment. The graph which shows the frequency distribution according to the diameter of the bubble in the gas-liquid mixed fluid obtained in Example 1.
  • the bubble forming apparatus 400 discharges a gas-liquid mixed fluid FL including a liquid and bubbles dispersed in the liquid, and the discharge unit 100 discharges the gas-liquid mixed fluid FL.
  • a bubble miniaturization tubular body 200 through which the gas-liquid mixed fluid FL is passed.
  • the bubble miniaturization tubular body 200 has a tubular shape with both ends open.
  • the gas-liquid mixed fluid FL discharged by the discharge unit 100 is introduced from one end 201 of the bubble miniaturization tubular body 200.
  • the bubble miniaturization tubular body 200 guides the gas-liquid mixed fluid FL introduced from one end 201 to the other end 202 and continuously releases it from the other end 202.
  • the bubble miniaturization tubular body 200 has a coiled portion 203 having a shape wound a plurality of times in a coil shape from one end 201 to the other end 202.
  • the significance of the coiled portion 203 will be described later.
  • the discharge unit 100 includes a gas-liquid mixing chamber 10 formed of an air-tight and liquid-tight container communicating with one end 201 of the bubble miniaturization tubular body 200, a porous member 20 disposed in the gas-liquid mixing chamber 10, and a porous member.
  • a gas pump 30 that supplies gas into the gas-liquid mixing chamber 10 through the mass member 20 and a liquid pump 40 that supplies liquid to the gas-liquid mixing chamber 10 are provided.
  • the liquid pump 40 is connected to the gas-liquid mixing chamber 10 by a pipe 51.
  • the liquid pump 40 takes in the liquid from the liquid source LS and discharges the taken-in liquid into the gas-liquid mixing chamber 10 through the pipe 51. Thereby, the gas-liquid mixing chamber 10 is filled with the liquid.
  • the gas pump 30 is connected to the porous member 20 by a pipe 52.
  • the gas pump 30 takes in the gas from the gas source GS and discharges the taken-in gas into the gas-liquid mixing chamber 10 through the pipe 52 and the porous member 20.
  • the porous member 20 is immersed in the liquid in the gas-liquid mixing chamber 10.
  • the porous member 20 has a porous structure in which a large number of fine ventilation holes are formed, and gas supplied from the gas pump 30 is bubbled in the porous structure and released into the liquid. Thereby, in the gas-liquid mixing chamber 10, the gas-liquid mixed fluid FL in which bubbles are dispersed in the liquid is formed.
  • porous member 20 is specifically comprised by the porous membrane.
  • the porous member 20 is not limited to the porous film, and for example, a sintered body of metal or ceramics may be used as the porous member 20.
  • the discharge unit 100 has a configuration capable of independently adjusting the flow rates of the liquid constituting the gas-liquid mixed fluid FL and the gas constituting the gas-liquid mixed fluid FL.
  • the pipe 51 is provided with a valve 61, and the flow rate of the liquid can be adjusted by the valve 61.
  • the pipe 52 is also provided with a valve 62, and the gas flow rate can be adjusted by the valve 62.
  • the pipe 51 is provided with a pressure gauge 71 that measures the internal pressure of the pipe 51.
  • the pipe 52 is provided with a pressure gauge 72 that measures the internal pressure of the pipe 52. The user can check the flow rate of the liquid based on the measurement result of the pressure gauge 71, and can check the gas flow rate based on the measurement result of the pressure gauge 72.
  • the gas-liquid mixing chamber 10 is also provided with a pressure gauge 73 for measuring the internal pressure of the gas-liquid mixing chamber 10.
  • the user can check the pressure at which the gas-liquid mixed fluid FL is discharged from the discharge unit 100 to the bubble miniaturization tubular body 200 based on the measurement result of the pressure gauge 73.
  • the user can adjust the pressure indicated by the pressure gauge 73 to a desired value using the valves 61 and 62.
  • the internal pressure of the gas-liquid mixing chamber 10 is increased by the pressure at which the gas pump 30 discharges gas and the pressure at which the liquid pump 40 discharges liquid.
  • the gas-liquid mixed fluid FL flows from the gas-liquid mixing chamber 10 into the bubble miniaturization tubular body 200.
  • the gas-liquid mixed fluid FL introduced from one end 201 is guided to the other end 202 via the coiled portion 203 and discharged from the other end 202.
  • the inside of the bubble miniaturization tubular body 200 is not provided with a throttle portion for restricting the flow of the gas-liquid mixed fluid FL.
  • the cross-sectional area of the portion where the gas-liquid mixed fluid FL flows in the bubble miniaturization tubular body 200 is constant from the one end 201 to the other end 202.
  • the bubble miniaturization tubular body 200 has a sufficiently thin and long shape and also has a coil-shaped portion 203. For this reason, a pressure loss occurs in the bubble miniaturization tubular body 200. As a result, the internal pressure of the bubble miniaturization tubular body 200 increases.
  • the pressure at which the discharge unit 100 discharges the gas-liquid mixed fluid FL increases the internal pressure of the bubble miniaturization tubular body 200 to the extent that the bubbles are dissolved in the liquid. .
  • the dissolution of the bubbles into the liquid by the increased internal pressure proceeds over a period during which the gas-liquid mixed fluid FL flows through the bubble miniaturization tubular body 200.
  • the bubbles contained in the gas-liquid mixed fluid FL are refined in the bubble miniaturization tubular body 200.
  • the bubble refinement tubular body 200 is a gas-liquid mixture in the bubble refinement tubular body 200.
  • the cross-sectional area of the portion where the fluid FL flows is X and the path length of the bubble miniaturization tubular body 200 along the flow path of the gas-liquid mixed fluid FL is Y, the length scale defined by Y / X is 250 [1. / Mm] or more.
  • the inner diameter of the bubble miniaturization tubular body 200 is 5 [mm] or less, and the path length of the bubble miniaturization tubular body 200 is 5 [m] or more.
  • the length scale Y / X is preferably 500 [1 / mm] or more, and is 750 [1 / mm] or more. More preferably.
  • the bubble refining tubular body in the coiled portion 203 is used as another means for increasing the internal pressure of the bubble refining tubular body 200 to such an extent that the bubbles are dissolved in the liquid.
  • the number of turns of 200 is 5 or more.
  • the number of turns of the coil-shaped portion 203 is preferably 10 or more, and more preferably 15 or more.
  • the internal pressure of the bubble miniaturization tubular body 200 can be increased, for example, to a value higher than atmospheric pressure and 0.3 MPa or less. / 5 or less, more preferably 1/10 or less.
  • the average diameter of bubbles in the gas-liquid mixing chamber 10 is 10 [ ⁇ m] or less
  • the average diameter is 2 [ ⁇ m] or less, more preferably 1 [ ⁇ m] from the other end 202 of the bubble miniaturization tubular body 200.
  • a gas-liquid mixed fluid FL containing the following bubbles can be obtained.
  • the average diameter of the bubbles in the gas-liquid mixing chamber 10 is 1 [ ⁇ m] or less, the average diameter is 200 [nm] or less, more preferably 100 [nm] from the other end 202 of the bubble miniaturization tubular body 200.
  • a gas-liquid mixed fluid FL containing the following bubbles can be obtained.
  • a turbulent vortex TV is generated inside the bubble miniaturization tubular body 200 within a cross section parallel to the path length direction of the bubble miniaturization tubular body 200.
  • the turbulent vortex TV is configured so that the discharge unit 100 can generate the gas-liquid mixed fluid FL under the condition that the Reynolds number of the flow of the gas-liquid mixed fluid FL in the bubble miniaturization tubular body 200 is 3000 or more. This is realized by being introduced into the bubble miniaturization tubular body 200.
  • the turbulent vortex TV promotes the refinement of bubbles in the bubble refinement tubular body 200.
  • a Dean vortex DV is also formed in a cross section perpendicular to the path length direction of the bubble miniaturization tubular body 200.
  • the Dean vortex DV is formed by the centrifugal force acting on the gas-liquid mixed fluid FL in the coiled portion 203 described above.
  • the direction in which the centrifugal force acts on the gas-liquid mixed fluid FL is indicated by an arrow.
  • the Dean vortex DV also promotes the refinement of bubbles in the bubble refinement tubular body 200.
  • the coiled portion 203 described above plays not only a role of causing pressure loss in the bubble miniaturization tubular body 200 but also a role of forming the Dean vortex DV.
  • the bubbles are dissolved in the liquid in the bubble miniaturization tubular body 200. Progresses. For this reason, by continuously introducing the gas-liquid mixed fluid FL into the bubble miniaturization tubular body 200, the gas-liquid mixed fluid FL containing bubbles refined by dissolution can be obtained continuously.
  • the maximum pressure generated in the bubble forming apparatus 400 can be reduced as compared with the prior art. Specifically, it is sufficient to increase the internal pressure of the bubble miniaturization tubular body 200 to a value of 0.3 MPa or less, preferably 0.2 MPa or less. As described above, the pressure generated in the bubble forming apparatus 400 can be reduced as compared with the prior art, so that the bubble forming apparatus 400 can be prevented from becoming heavy, and the bubble forming apparatus 400 is unlikely to fail.
  • the internal pressure of the bubble forming apparatus 400 is higher than that in the case where the turbulent vortex TV and the Dean vortex DV are not generated. Even if it is low, the bubbles can be miniaturized to a desired size. That is, generating the turbulent vortex TV and the Dean vortex DV contributes to reducing the internal pressure of the bubble miniaturization tubular body 200.
  • the ratio of the bubble and the liquid in the gas-liquid mixed fluid FL before passage of the bubble miniaturization tubular body 200 can be adjusted independently using the valves 61 and 62, the passage after the passage of the bubble refinement tubular body 200 is reached.
  • the ratio of bubbles to liquid in the gas-liquid mixed fluid FL can also be adjusted independently.
  • the temperature of the gas-liquid mixed fluid FL is not positively adjusted.
  • the bubble forming device 400 adjusts the temperature of the gas-liquid mixed fluid FL via the bubble miniaturization tubular body 200. Means may further be provided. Specific examples thereof will be described below.
  • the bubble forming device 500 includes a temperature adjusting device 300 as temperature adjusting means for adjusting the temperature of the gas-liquid mixed fluid FL via the bubble miniaturizing tubular body 200.
  • the temperature adjustment device 300 includes a constant temperature liquid tank 310 in which the temperature adjustment liquid is stored, and a temperature adjuster 320 that maintains the temperature adjustment liquid in the constant temperature liquid tank 310 at a predetermined temperature.
  • a temperature adjuster 320 that maintains the temperature adjustment liquid in the constant temperature liquid tank 310 at a predetermined temperature.
  • water can be used as the temperature adjusting liquid.
  • the coil-shaped portion 203 of the bubble miniaturization tubular body 200 is made of a metal having good heat conduction, specifically copper, and is immersed in the temperature adjusting liquid in the thermostatic liquid bath 310. For this reason, the temperature of the gas-liquid mixed fluid FL can be adjusted via the coiled portion 203. Since the coiled portion 203 has a large surface area, the temperature of the gas-liquid mixed fluid FL can be easily adjusted.
  • the gas-liquid mixed fluid FL adjusted to a desired temperature can be obtained. Further, the solubility of the bubbles in the liquid in the bubble miniaturization tubular body 200 can be adjusted by the temperature of the gas-liquid mixed fluid FL. The bubbles are more easily dissolved in the liquid as the temperature of the gas-liquid mixed fluid FL is lower, and the bubbles are more difficult to dissolve in the liquid as the temperature of the gas-liquid mixed fluid FL is higher.
  • the bubbles are miniaturized using one bubble miniaturization tubular body 200, but the bubble forming apparatus 400 may include a plurality of bubble miniaturization tubular bodies 200. Specific examples thereof will be described below.
  • the bubble forming apparatus 600 includes two bubble refinement tubular bodies 210 and 220. Two bubbles are refined in the gas-liquid mixing chamber 10 of the ejection unit 100 so that the gas-liquid mixed fluid FL ejected from the ejection unit 100 flows in parallel through the two bubble miniaturization tubular bodies 210 and 220. Tubular bodies 210 and 220 are connected.
  • the bubbles can be refined in parallel in the bubble refinement tubular bodies 210 and 220, the bubbles can be refined efficiently.
  • Example 1 Using the bubble forming apparatus 400 shown in FIG. 1, a gas-liquid mixed fluid FL containing bubbles refined by the bubble refinement tubular body 200 was obtained. Air was used as the gas constituting the gas-liquid mixed fluid FL, and distilled water was used as the liquid.
  • a metal tube having an inner diameter of 4 [mm] and a path length of 10 [m] was used for the bubble miniaturization tubular body 200.
  • the length scale Y / X of this metal tube is 796 [1 / mm].
  • the diameter of the coiled portion 203 was about 20 [cm], and the number of turns of the coiled portion 203 was 15.
  • a gas-liquid mixed fluid FL in which air bubbles were dispersed in distilled water was formed.
  • the average diameter of the bubbles contained in the gas-liquid mixed fluid FL in the gas-liquid mixing chamber 10 was 1 [ ⁇ m].
  • the gas-liquid mixed fluid FL is It was made to introduce into the tubular body 200 for bubble miniaturization. Then, the gas-liquid mixed fluid FL containing bubbles refined by dissolution was continuously released from the other end 202 of the bubble refinement tubular body 200.
  • FIG. 6 shows the frequency distribution of bubbles in the gas-liquid mixed fluid FL discharged from the bubble miniaturization tubular body 200 by diameter.
  • Graph A shows the frequency distribution
  • graph B shows the cumulative frequency distribution.
  • the average diameter of the bubbles contained in the gas-liquid mixed fluid FL was 100 nm or less. That is, it was confirmed that the average diameter of the bubbles was reduced to 1/10 or less in the bubble refinement tubular body 200.
  • Example 2 A gas-liquid mixed fluid FL containing bubbles refined by dissolution was obtained under the same conditions as in Example 1 except that oxygen was used as the gas constituting the gas-liquid mixed fluid FL.
  • FIG. 7 shows the frequency distribution of bubbles in each gas-liquid mixed fluid FL by diameter.
  • Graph C shows the frequency distribution
  • graph D shows the cumulative frequency distribution.
  • the average diameter of the bubbles contained in the gas-liquid mixed fluid FL was 100 nm or less. That is, it was confirmed that the average diameter of the bubbles was reduced to 1/10 or less in the bubble refinement tubular body 200.
  • Example 3 A gas-liquid mixed fluid FL containing bubbles refined by dissolution was obtained under the same conditions as in Example 1 except that tap water was used as the liquid constituting the gas-liquid mixed fluid FL.
  • FIG. 8 shows the frequency distribution of the bubbles in the obtained gas-liquid mixed fluid FL by diameter.
  • Graph E shows the frequency distribution
  • graph F shows the cumulative frequency distribution.
  • the average diameter of the bubbles contained in the gas-liquid mixed fluid FL was 100 nm or less. That is, it was confirmed that the average diameter of the bubbles was reduced to 1/10 or less in the bubble refinement tubular body 200.
  • Example 4 A gas-liquid mixed fluid FL containing bubbles refined by dissolution was obtained under the same conditions as in Example 1 except that tap water was used as the liquid constituting the gas-liquid mixed fluid FL and oxygen was used as the gas. .
  • FIG. 9 shows the frequency distribution of air bubbles by diameter in the obtained gas-liquid mixed fluid FL.
  • Graph G shows the frequency distribution
  • graph H shows the cumulative frequency distribution.
  • the average diameter of the bubbles contained in the gas-liquid mixed fluid FL was 100 nm or less. That is, it was confirmed that the average diameter of the bubbles was reduced to 1/10 or less in the bubble refinement tubular body 200.
  • the coiled portion 203 is provided in the bubble miniaturization tubular body 200, but the coiled portion 203 is not essential. If a part of the bubble miniaturization tubular body 200 is curved, the Dean vortex DV can be formed. In addition, the formation of the Dean vortex DV is not essential when the bubbles are miniaturized. Even in a tubular body for air bubble refinement composed of straight pipes extending in a straight line, an increase in internal pressure due to pressure loss can occur, and air bubbles can be refined by the increased internal pressure.
  • FIG. 1 shows the gas source GS for easy understanding.
  • the gas when the gas is air, the gas source GS can be omitted.
  • the gas pump 30 when a cylinder into which gas is press-fitted is used as the gas source GS, the gas pump 30 can be omitted because the discharge pressure of the gas from the cylinder can be used.
  • a pressurized liquid is obtained as in the case of using tap water as the liquid, the liquid source LS and the liquid pump 40 may be omitted.
  • the cross-sectional area of the portion through which the gas-liquid mixed fluid FL flows in the bubble miniaturization tubular body 200 is constant from one end 201 to the other end 202, but this is not essential.
  • the cross-sectional area of the bubble miniaturization tubular body 200 may be different depending on the position of the bubble miniaturization tubular body 200 in the path length direction.
  • a throttle part that restricts the flow of the gas-liquid mixed fluid FL may be provided in the bubble miniaturization tubular body 200.
  • the cross-sectional area defining the length scale Y / X is the maximum value of the cross-sectional area in the bubble miniaturization tubular body 200.
  • the bubble forming apparatus 600 includes the two bubble refining tubular bodies 210 and 220.
  • the bubble forming apparatus 600 may include three or more bubble refining tubular bodies.
  • the dimensions and shapes of the plurality of bubble miniaturization tubular bodies may be different from each other.
  • the bubble forming apparatus and the bubble forming method according to the present invention can be used for forming a gas-liquid mixed fluid containing fine bubbles.

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  • Chemical Kinetics & Catalysis (AREA)

Abstract

Selon l'invention, une partie d'évacuation (100) évacue un mélange fluidique gaz-liquide (FL) comprenant un liquide et des bulles d'air dispersées dans le liquide. Le mélange fluidique gaz-liquide (FL) évacué par la partie d'évacuation (100) est introduit dans un corps tubulaire d'atomisation de bulles d'air (200) prenant la forme d'un tube ayant ses deux extrémités ouvertes. La pression interne du corps tubulaire d'atomisation de bulles d'air (200) est augmentée par la pression avec laquelle le mélange fluidique gaz-liquide (FL) est évacué de la partie d'évacuation (100), dans la mesure où les bulles d'air se dissolvent dans le liquide, et la dissolution des bulles d'air dans le liquide, due à la pression interne augmentée, progresse pendant une période d'écoulement du mélange fluidique gaz-liquide (FL) dans le corps tubulaire d'atomisation de bulles d'air (200). Par conséquent, les bulles d'air comprises dans le mélange fluidique gaz-liquide (FL) sont atomisées dans le corps tubulaire d'atomisation de bulles d'air (200).
PCT/JP2018/019795 2017-06-07 2018-05-23 Dispositif et procédé de formation de bulles d'air WO2018225510A1 (fr)

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JP2017-112245 2017-06-07

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JP2022514448A (ja) * 2019-05-31 2022-02-14 ユ ヤン ホ ナノバブル生成用流路部材、これを用いた集積流路ユニット及びナノバブル生成器

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JP2008188574A (ja) * 2006-08-23 2008-08-21 Matsushita Electric Works Ltd 気体溶解装置
EP2103344A1 (fr) * 2008-03-18 2009-09-23 Min Chien Teng Mélangeur gaz/liquide
JP2010194440A (ja) * 2009-02-24 2010-09-09 Panasonic Electric Works Co Ltd 気液混合装置
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JP2022514448A (ja) * 2019-05-31 2022-02-14 ユ ヤン ホ ナノバブル生成用流路部材、これを用いた集積流路ユニット及びナノバブル生成器
JP7174964B2 (ja) 2019-05-31 2022-11-18 ユ ヤン ホ ナノバブル生成用流路部材、これを用いた集積流路ユニット及びナノバブル生成器
JP2021062347A (ja) * 2019-10-16 2021-04-22 住友金属鉱山株式会社 反応装置の運転方法
JP7299591B2 (ja) 2019-10-16 2023-06-28 住友金属鉱山株式会社 反応装置の運転方法

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