EP4347096A1 - Procédé et dispositif de production d'un liquide contenant une concentration élevée en bulles extrêmement petites - Google Patents

Procédé et dispositif de production d'un liquide contenant une concentration élevée en bulles extrêmement petites

Info

Publication number
EP4347096A1
EP4347096A1 EP22753595.2A EP22753595A EP4347096A1 EP 4347096 A1 EP4347096 A1 EP 4347096A1 EP 22753595 A EP22753595 A EP 22753595A EP 4347096 A1 EP4347096 A1 EP 4347096A1
Authority
EP
European Patent Office
Prior art keywords
reservoir
liquid
gas
nanobubble generator
bubbles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22753595.2A
Other languages
German (de)
English (en)
Inventor
Kristin HECHT
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Otto Von Guericke Universitaet Magdeburg
Original Assignee
Otto Von Guericke Universitaet Magdeburg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Otto Von Guericke Universitaet Magdeburg filed Critical Otto Von Guericke Universitaet Magdeburg
Publication of EP4347096A1 publication Critical patent/EP4347096A1/fr
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/40—Static mixers
    • B01F25/45—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads
    • B01F25/451—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by means for moving the materials to be mixed or the mixture
    • B01F25/4512—Mixers in which the materials to be mixed are pressed together through orifices or interstitial spaces, e.g. between beads characterised by means for moving the materials to be mixed or the mixture with reciprocating pistons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
    • B01F31/65—Mixers with shaking, oscillating, or vibrating mechanisms the materials to be mixed being directly submitted to a pulsating movement, e.g. by means of an oscillating piston or air column
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/20—Measuring; Control or regulation
    • B01F35/21—Measuring
    • B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/7174—Feed mechanisms characterised by the means for feeding the components to the mixer using pistons, plungers or syringes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
    • B01F35/71745—Feed mechanisms characterised by the means for feeding the components to the mixer using pneumatic pressure, overpressure, gas or air pressure in a closed receptacle or circuit system

Definitions

  • the invention relates to a method for producing a liquid containing a high concentration of tiny bubbles, in which a liquid is conducted from a first reservoir via a nanobubble generator into a second reservoir, and to a device for producing a liquid containing a high concentration of tiny bubbles this procedure.
  • Liquids containing the smallest bubbles are used in various areas, such as in medicine as ultrasound contrast media or in the food and beverage industry, especially for cleaning. For this it is necessary to generate these bubbles efficiently and in high concentration.
  • Bubbles can be generated hydrodynamically, acoustically, optically or by particle cavitation.
  • a hydrodynamic method is often used to generate the smallest bubbles, i.e. particularly small, fine or ultrafine bubbles, since it is comparatively inexpensive and effective.
  • This method is based on the fact that a moving liquid is supplied with a gas and a force is additionally exerted on the gas. This force can be based on a circulation - gas-water circulation - or on pressure - gas-water decompression.
  • One of these two methods is usually used to generate tiny bubbles, i.e. tiny gas cavities in the water to further improve the gas content. In this case, an increase in the content of dissolved gas in the liquid is usually achieved by supersaturation.
  • KR 101894870 B1 discloses a device that produces tiny bubbles by adding gas to the water in a dissolving tank.
  • a motor is used for the necessary circulation of the water.
  • Such a motor works with mechanical, moving parts and can thus disadvantageously lead to the entry of foreign particles.
  • KR 20200025081 A discloses a method for producing highly concentrated hydrogen water.
  • the water and the hydrogen gas are brought together using a mixing device and then fed into a tank. Inside the tank, the hydrogen gas is added to the water under high pressure. This high pressure is generated by a pump unit.
  • the water with the added hydrogen gas is then fed into another container and stored there. During the procedure, the temperature is 20-25 °C.
  • the disadvantage here is that the liquid heats up as a result of using the pump. When the liquid cools down again, gas that was already dissolved in the liquid in the form of fine bubbles is released from the liquid again. This consequently reduces the concentration of the bubbles again, which reduces the efficiency of the process.
  • a method for generating a high concentration of fine bubbles with a size of about 1 ⁇ m is described in EP 3241 604 A1.
  • a liquid that already has a certain concentration of fine bubbles is heated and evaporated by an additional reduction in pressure.
  • a high concentration of fine bubbles is obtained by means of a volume reduction.
  • heating the liquid disadvantageously reduces the amount of gas that can be physically dissolved in the liquid.
  • An alternative method is described in EP 3231 502 A1.
  • a filter is used, which is impermeable to some of the bubbles.
  • a high concentration can also be obtained thereby. It is also possible to combine these two methods as described in EP 2946829 A1.
  • the disadvantage is that filtration cannot be carried out for all sizes of the smallest bubbles, and additional energy must be expended in order to carry out the filtration.
  • US 2015/0343399 A1 discloses a nanobubble generator with a pressurized gas supply to a container. The gas is also fed into the headspace of the container and the liquid is recirculated until a specified concentration of nanobubbles is reached.
  • the use of an ultrasonic vibrator is proposed and high nanobubble concentrations are achieved.
  • the object of the invention is therefore to provide higher concentrations of the smallest bubbles in liquids, to increase the efficiency of the method and to improve the quality of the liquid containing the smallest bubbles.
  • the object is solved by an object with the features according to the independent patent claims. Further developments are specified in the dependent claims.
  • the object is achieved in particular by a method for producing a liquid containing a high concentration of the smallest bubbles, which comprises the following steps: a) Providing a liquid in a first closed reservoir. b) Conducting the liquid under pressure from the first reservoir into a nanobubble generator and further into a second reservoir, the smallest bubbles being produced in the liquid as it flows through the nanobubble generator. The liquid is passed through the first reservoir to the nanobubble generator and through tubular connections connecting the nanobubble generator to the second reservoir. c) directing the liquid from the second reservoir into the first reservoir.
  • the liquid is conducted through tubular connections, ie through tubular lines.
  • the force for moving the liquid is not provided by a pump, but the liquid is moved by a thrust force which is based on another fluid that is present or a moving thrust element, i.e. is provided by another fluid or a thrust element .
  • the thrust is based on a gas pressure difference in the reservoirs.
  • the pressure in the reservoir from which the liquid is derived - i.e. the first reservoir in step b and the second reservoir in step c) - must necessarily be higher than the pressure in the reservoir into which the liquid is directed - the second reservoir during step b) and the first reservoir during step c) -.
  • This pressure difference can be created in different ways. It is thus possible to generate the pressure difference through hydrostatic pressure, through gas pressure or through a reduction in the reservoir volume.
  • the pressure difference between the reservoirs is preferably more than 2 bar.
  • a first piston is arranged as a thrust element inside the first reservoir and a second piston is arranged as a thrust element inside the second reservoir.
  • the pistons are set up in such a way that the force for moving the liquid is based on a reduction in volume within the reservoir due to a movement of one of the pistons.
  • the thrust element is therefore designed as a piston which is set up to reduce the volume of one of the reservoirs.
  • a first piston is positioned within the first reservoir and can reduce the volume of the first reservoir.
  • a second piston is disposed within the second reservoir and can reduce the volume of the second reservoir. In this case, during step c), the liquid arranged within the second reservoir is pushed in the direction of the first reservoir.
  • the piston closes off the reservoir in such a way that no liquid can flow past it. There is therefore a sealing connection between the piston and the reservoir.
  • the reduction in volume provides the force which pushes the liquid from the first reservoir into the second reservoir and/or from the second reservoir into the first reservoir.
  • the reduction in volume within the reservoir is induced by a movement of one of the pistons.
  • the use of a piston to move the liquid can advantageously be carried out without having to introduce another fluid into one of the reservoirs. As a result, the method can be carried out in a closed device. Automation is so easy to implement.
  • the thrust force is preferably provided by a gas as an additional fluid.
  • the gas is arranged in the container, which acts as a compressed gas unit is trained.
  • the gas flows at a gas pressure from a compressed gas unit connected to the first reservoir and the second reservoir via tubular connections during step b) into the first reservoir and during step c) into the second reservoir, and the force for moving the liquid is provided by the gas pressure.
  • the gas flowing out of the compressed gas unit builds up a pressure which drives the liquid during steps b) and c).
  • the force to move the liquid through the nanobubble generator is thus provided by the gas pressure.
  • a compressed gas unit is any device that generates gas under increased pressure, in particular a gas compressor or any closed container that contains gas under increased pressure, for example a gas cylinder.
  • a nanobubble generator is understood to mean a device for generating extremely small bubbles in a liquid.
  • a gas is fed to the nanobubble generator via a gas inlet opening and a liquid is fed in at the same time via a liquid inlet opening.
  • a common inlet opening for the liquid and the gas can also be used, which then functions as a combined gas and liquid inlet opening.
  • the smallest bubbles are generated within the liquid by a force acting on the liquid.
  • the liquid containing the smallest bubbles exits the nanobubble generator via a liquid outlet opening.
  • Suitable nanobubble generators use a hydrodynamic method in which the gas is dissolved in the pressurized liquid.
  • a nanobubble generator is therefore a component for producing a liquid containing tiny bubbles.
  • a bubble is a gaseous body within a liquid.
  • the smallest bubbles are bubbles, according to the ISO 20480-1:2017 standard, with a diameter between 10 nm and 100 pm, preferably bubbles with a diameter between 10 nm and 1000 nm.
  • fine bubbles which are also called microbubbles or fine bubbles
  • ultrafine bubbles which are also referred to as nanobubbles or ultrafine bubbles, with a diameter of 10 nm and 1000 nm.
  • the liquid In order to provide sufficient pressure within the nanobubble generator, it is necessary for the liquid to be fed into the nanobubble generator under pressure. According to the invention, the force required for this is generated by means of a gas flowing out under pressure from a compressed gas unit.
  • the pressure in the second reservoir is lower and the pressure is only increased again when the first reservoir is filled again.
  • the liquid is presaturated with the gas, so that the gas in the nanobubble generator does not lead to gas dissolved in the liquid, but is instead used advantageously to generate bubbles. Since no further energy is supplied to the liquid, the temperature of the liquid does not change, i.e. it is not heated. Thus, both the efficiency of the process can be improved and the bubble concentration achieved can be increased. Concentrations of 10 9 ml 1 and more can be achieved. The concentration increases with an increase in the number of process cycles carried out.
  • gas is removed from the first reservoir after, i.e. subsequent to, step b) via a valve connected to the first reservoir and/or from the second reservoir after, i.e. subsequent to, step c) drained through a valve connected to the second reservoir.
  • a connection of a reserve jurs with a valve is preferably via tubular connections.
  • the gas pressure is preferably between 2 bar and 20 bar, particularly preferably between 3 bar and 10 bar.
  • the maximum gas pressure depends on the design of the device for generating the smallest bubbles.
  • a possible variant provides for the nanobubble concentration to be measured after step b) and/or after step c).
  • a measurement can optionally be carried out only every 2 to 5 repetitions. It is also a suitable option to use empirical values, i.e. previous measurements of the nanobubble concentration in earlier processes, and thus to control the number of repetitions of the process and to dispense with the measurements.
  • the method according to the invention is advantageously reproducible, so that the level of the nanobubble concentration can be determined by the number of times the method is repeated.
  • the liquid is preferably conducted from the second reservoir via the nanobubble generator into the first reservoir during step c).
  • the smallest bubbles are generated in the liquid as it flows through the nanobubble generator. So the smallest bubbles are created in the liquid when the liquid flows through the nanobubble generator.
  • valves are components for controlling the flow of a liquid or a gas through a pipe or a tubular connection.
  • a valve can completely shut off the flow of the fluid, i.e. the liquid or the gas. If the valve arranged between the compressed gas unit and the first reservoir is opened and the valve arranged between the compressed gas unit and the second reservoir is closed, the gas flows into the first reservoir and enables step b) to be carried out. It is then possible to switch to step c) in that the valve arranged between the compressed gas unit and the second reservoir is opened and the valve arranged between the compressed gas unit and the first reservoir is closed.
  • a valve is arranged between the compressed gas unit and the first reservoir in the tubular connection in such a way that the gas can flow from the compressed gas unit into the first reservoir or is prevented by the valve.
  • a further valve is arranged within the tubular connection between the compressed gas unit and the second reservoir. This further valve can allow or block the flow of gas from the compressed gas unit into the second reservoir.
  • a preferred variant of the method uses the driving gas, which provides the power to move the liquid, ie the gas flowing under pressure from the compressed gas unit, to generate the smallest bubbles in the nanobubble generator.
  • a gas is used that is fed to the nanobubble generator via a separate gas supply. Different gases can also be fed in alternately at the same time or one after the other.
  • the object is also achieved by a device for generating extremely small bubbles using the method according to the invention.
  • the device has the following:
  • a nanobubble generator with a liquid inlet opening and a liquid outlet opening, the liquid inlet opening of the nanobubble generator being connected to the first reservoir via tubular connections and the liquid outlet opening of the nanobubble generator generator is connected to the second reservoir via tubular connections and at least one valve arranged between the second reservoir and the nanobubble generator, and
  • the additional fluid or the thrust element are arranged and set up in such a way that the liquid can be pushed through the nanobubble generator by means of a thrust force.
  • the thrust element is preferably designed as a piston within the first reservoir, which is set up to reduce the volume in the first reservoir. The liquid can be pushed from the first reservoir into the second reservoir by the piston.
  • the container is preferably a compressed gas unit and a gas is arranged as a further fluid within the compressed gas unit.
  • the two closed reservoirs are connected to the compressed gas unit via tubular connections and valves.
  • the device has a nanobubble generator with a liquid inlet opening and a liquid outlet opening. The force for moving the liquid through the nanobubble generator is provided by the gas pressure of the gas flowing from the compressed gas unit into one of the reservoirs.
  • a first piston is particularly preferably arranged as a thrust element in the first reservoir and a second piston is arranged as a thrust element in the second reservoir.
  • the device according to the invention preferably has two closed reservoirs, which are connected to a compressed gas unit via tubular connections and valves, and a nanobubble generator with a liquid inlet opening and a liquid outlet opening.
  • the liquid inlet opening of the nanobubble generator is connected to the first reservoir via tubular connections and the liquid outlet opening of the nanobubble generator is connected via tubular connections and at least one valve arranged between the second reservoir and the nanobubble generator connected to the second reservoir.
  • the force for moving the liquid through the nanobubble generator is provided by the gas pressure of the gas flowing out of the compressed gas unit into one of the reservoirs.
  • the power to move the liquid does not result from the operation of a pump. In this arrangement, therefore, preferably no pump is arranged outside of the nanobubble generator.
  • the energy for moving the liquid is provided by the gas compressed in the compressed gas unit.
  • the nanobubble generator is preferably also connected to a separate gas reservoir via a gas inlet opening. The gas from the separate gas reservoir is then used within the nanobubble generator to create tiny bubbles in the liquid.
  • there is no connection to a separate gas reservoir and the gas used to move the liquid is used to create the smallest bubbles using the nanobubble generator. Both are particularly preferably combined, ie both the gas used to move the liquid and the gas from a separate gas reservoir are used.
  • the nanobubble generator is connected to two or more separate gas reservoirs, which preferably contain different gases.
  • tubular connections and a respective valve are arranged between the nanobubble generator and the two reservoirs in such a way that the liquid can flow from the second reservoir via the nanobubble generator into the first reservoir.
  • the device has a first piston as a thrust element, which is arranged in the first reservoir. Furthermore, the device has a second piston which is arranged in the second reservoir.
  • the thrust is advantageously made available by the pistons, which can be moved in order to reduce the volume in the reservoir.
  • the device preferably has a measuring device for determining the concentration of nanobubbles. This advantageously enables the nanobubble concentration to be controlled, as a result of which the nanobubble concentration can be set precisely. Furthermore, according to an advantageous embodiment, the device has a control device with which the method is automated. Optionally, the method can also be carried out by manually actuating the valves.
  • the device comprises means adapted to carry out the steps of the method according to the invention.
  • the process can then be automated.
  • a further aspect of the invention relates to a computer program product which includes instructions which cause this device to carry out the method steps according to the invention.
  • a further aspect of the invention relates to a computer-readable medium on which the computer program product according to the invention is stored.
  • a high concentration of the smallest bubbles can be generated with the present method.
  • a pump for generating the force for driving the liquid is dispensed with, so that an increase in the temperature of the liquid can be avoided.
  • Only gas pressure is used to propel the liquid between the reservoirs, ensuring a constant temperature. So a liquid is filled into a reservoir and a gas under high pressure is used to move the liquid, i.e. to drive the liquid supply.
  • the device for generating extremely small bubbles therefore has at least two closed reservoirs and a nanobubble generator with a liquid inlet opening and a liquid outlet opening.
  • the two reservoirs are each connected to the nanobubble generator via tubular connections and the first reservoir is connected to the liquid inlet opening of the nanobubble generator and the second reservoir is connected to the liquid outlet opening of the nanobubble generator.
  • a compressed gas unit is connected to the first and second reservoirs via tubular connections and valves, so that the force for moving the liquid through the nanobubble generator is generated by a pressure difference in the containers, ie in particular by a highly pressurized gas, preferably by the gas pressure of the gas flowing from a pressurized gas unit connected to one of the reservoirs into the corresponding one of the reservoirs, or by a reduced volume of one of the reservoirs.
  • a pressure difference in the containers ie in particular by a highly pressurized gas, preferably by the gas pressure of the gas flowing from a pressurized gas unit connected to one of the reservoirs into the corresponding one of the reservoirs, or by a reduced volume of one of the reservoirs.
  • the liquid can be fed back into the first reservoir, with the steps described above being able to be repeated as often as desired.
  • another aspect of the invention relates to a device for carrying out the method described, the device having two reservoirs, a nanobubble generator and a compressed gas unit containing a gas under high pressure, or a device which is arranged and set up in such a way that by means of this a volume reduction is possible in the reservoirs.
  • FIG. 1 an arrangement for generating the smallest bubbles, in which a liquid flows from a first reservoir into a second reservoir
  • FIG. 2 the arrangement from FIG. 1, in which the liquid flows from the second reservoir into the first reservoir.
  • the gas in the compressed gas unit 2 is a central element.
  • the energy present, which results from the overpressure of the gas in the compressed gas unit 2 is used to move both the gas and the liquid through lines 3, i.e. tubular connections .
  • Nine valves 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9 are arranged to control the flow of gas and liquid.
  • liquid is first fed into a first reservoir 5 .
  • Gas from the compressed gas unit 2 is then passed into the first reservoir 5 .
  • the mixture of liquid and gas present in the first reservoir 5 is fed into the second reservoir 6, passing through the nanobubble generator 7. This induces tiny bubbles in the liquid.
  • the valves 4.1, 4.2, 4.3, 4.4, 4.5, 4.6, 4.7, 4.8, 4.9 are adjusted in such a way that, as in Fig. 2 shown, direct the mixture of liquid and gas back into the first reservoir 5, the nanobubble generator 7 also being passed here.
  • valve 4.1 In order to be able to conduct the liquid into the first reservoir 5, the valve 4.1 is opened so that the liquid can flow in via this valve 4.1. Meanwhile, the valves 4.2, 4.3 are set to position A and the valves 4.5 and 4.7 are closed. Up to 5 l or up to 20 l of liquid are preferably filled in via the valve 4.1. Optionally, higher volumes can also be filled in an adapted arrangement. The valve 4.1 can then be closed.
  • a compressed gas unit 2 such as a gas bottle
  • a compressed gas unit valve arranged thereon such as a gas bottle tap
  • the desired pressure is set at valve 4.9, for example 3 bar.
  • the liquid is conducted from the first reservoir 5 into the second reservoir 6 via the nanobubble generator 7 .
  • valve 4.2 is now set to position B and valve 4.3 to position A. It is also relevant to set the valves 4.4 and 4.6 to position A, shown here pointing upwards.
  • the compressed gas unit 2 is now opened via the compressed gas unit valve and the nanobubble generator 7 is started at the same time, the liquid is guided by the gas flowing in from the first reservoir 5 into the nanobubble generator 7, in which bubbles are indicated in the liquid. whereupon the liquid is conducted into the second reservoir 6 by further following gas.
  • the nanobubble generator 7 can be stopped and the compressed gas unit 2 can be closed again.
  • the amount of liquid in the second reservoir 6 can be determined using any level indicator.
  • valve 4.2 is taking into account Pressure release set to position A. As a result, the increased gas pressure can be reduced and part of the gas can escape via valve 4.2.
  • the liquid can be fed back from the second reservoir 6 into the first reservoir 5, as shown in FIG.
  • the arrangement is preferably designed in such a way that the liquid also passes through the nanobubble generator 7 in this case.
  • the valve 4.2 is left in position A and the valve 4.3 is now set to position B, so that there is a connection between the second reservoir 6 and the compressed gas unit.
  • the valves 4.4 and 4.6 are now set to position B, shown here pointing downwards.
  • the compressed gas unit 2 can then be opened and the nanobubble generator 7 started at the same time.
  • the energy of the gas under high pressure from the compressed gas unit 2 causes the outflowing gas to flow into the second reservoir 6 and thereby directs the liquid towards the valve 4.6.
  • the liquid then flows past the valve 4.6 set to position B and through the valve 4.4 set to position B via lines 3 again into the nanobubble generator 7 and is then passed through the valve 4.6, which is set to position B .
  • the liquid then flows back into the first reservoir 5 .
  • the nanobubble generator 7 can be stopped and the compressed gas unit 2 can be closed.
  • a filling level indicator can also be used here in order to determine the amount of liquid in the first reservoir 5 .
  • the lines 3 adjoining the respective reservoir 5, 6 or the reservoir 5, 6 itself can be made of a transparent material at least in sections or have a viewing window, so that the fill level can be observed through this section or through the inserted viewing window can be.
  • the valve 4.3 can be set back to position A, taking into account the pressure relief, so that no more gas flows in. It is also possible to reduce an increased gas pressure via the valve 4.3. For this, part of the gas flows out of the second reservoir 6 via the valve 4.3. It is possible to repeat the above steps as often as you like, i.e. the liquid, for example water, via the nanobubble generator 7 from the first reservoir 5 into the second reservoir 6 and then to conduct the liquid via the nanobubble generator 7 from the second reservoir 6 into the first reservoir 5 .
  • the liquid for example water
  • valves 4.5 and 4.7 are used to remove the liquid from the arrangement 1 and thus to empty the arrangement 1.

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

Abstract

L'invention concerne un procédé de production d'un liquide, lequel contient une concentration élevée en bulles extrêmement petites. Selon l'invention, un liquide est fourni dans un réservoir (5) et est transféré par un générateur de nanobulles (7) dans un second réservoir (6). Ledit procédé se caractérise en ce que la force permettant de déplacer le liquide est fournie par une différence de pression dans les récipients, c'est-à-dire en particulier par un gaz sous haute pression ou par un volume réduit d'un des réservoirs, qui afflue d'une unité de gaz comprimé (2) raccordée au réservoir correspondant. Pour augmenter la concentration en bulles extrêmement petites, le liquide peut être renvoyé dans le premier réservoir, les étapes décrites ci-dessus pouvant être répétées aussi souvent que nécessaire. L'invention concerne également un dispositif permettant de mettre en œuvre le procédé, qui comprend deux réservoirs, un générateur de nanobulles et une unité de gaz comprimé contenant un gaz sous haute pression ou une possibilité de réduction de volume dans les réservoirs.
EP22753595.2A 2021-06-05 2022-06-03 Procédé et dispositif de production d'un liquide contenant une concentration élevée en bulles extrêmement petites Pending EP4347096A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102021002892 2021-06-05
PCT/DE2022/000061 WO2022253378A1 (fr) 2021-06-05 2022-06-03 Procédé et dispositif de production d'un liquide contenant une concentration élevée en bulles extrêmement petites

Publications (1)

Publication Number Publication Date
EP4347096A1 true EP4347096A1 (fr) 2024-04-10

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Country Status (3)

Country Link
EP (1) EP4347096A1 (fr)
DE (1) DE112022002966A5 (fr)
WO (1) WO2022253378A1 (fr)

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KR102122787B1 (ko) 2018-08-29 2020-06-15 하이월드테크 주식회사 고농도 수소수 생성장치

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