WO2016155608A1 - Device for preparing gas solution and method for improving gas solubility in liquid - Google Patents

Abstract

A preparation device (100; 200) and a preparation method for a supersaturated gas solution. The preparation device (100; 200) comprises a gas-liquid mixing device (1024; 202) and a water tank (104; 204), wherein the gas-liquid mixing device (1024; 202) is provided with a water inlet (102a; 202a), a water outlet (103b; 202c) and a gas inlet (105b; 202b) which is used for being in communication with a gas source (101; 201), and the water tank is provided with a water suction port (1011; 2011) and a water inlet (1012; 2012), wherein the water inlet (102a; 202a) of the gas-liquid mixing device (1024; 202) is connected with the water suction port (1011; 2011) of the water tank (104; 204) via a water suction flow branch line (1022; 2020), the water outlet (103b; 202c) of the gas-liquid mixing device (1024; 202) is connected with the water inlet (1012; 2012) of the water tank (104; 204) via a discharge flow branch line (1023; 2021), and a pressure relief device (106; 206) is arranged on the discharge flow branch line (1023; 2021), such that a gas-liquid mixing flow from the gas-liquid mixing device (1024; 202) flows through the pressure relief device (106; 206) and then is discharged into the water tank (104; 204).

Description

Gas solution preparation device and method for improving gas solubility in liquid

Related application cross-reference

This application claims the application number of CN201510145006.2, filed on March 30, 2015, entitled "Preparation device for a supersaturated hydrogen solution and its preparation method", and the invention name submitted on December 11, 2015 is "Application apparatus for supersaturated hydrogen solution and preparation method thereof" is a Chinese patent application of CN2015109246054, and the invention titled "Description of a gas solution" and an increase in the tolerance of a gas in a liquid. The method of the present application is entitled to the priority of the Chinese Patent Application No. CN2015109246410, the entire disclosure of which is incorporated herein by reference.

Technical field

The present invention relates to a technique and apparatus for charging a liquid into a gas, increasing the content of the gas in the liquid, to a saturated or supersaturated state, and more particularly to a device for preparing a supersaturated gas solution, in particular, a gas The micro-nano-scale bubble method is a method of preparing a super-saturated gas solution by thoroughly mixing with a liquid to achieve a supersaturated dissolved state of a gas in a liquid at a normal temperature and a normal pressure.

Background technique

The hydrogen solution refers to a gas-liquid mixture formed after hydrogen is dissolved in water, and the addition of hydrogen does not change the pH of the raw water. Since 2007, Nature published a report on the biomedical effects of hydrogen, anti-inflammatory, anti-apoptotic effects of hydrogen in Japan. In the past seven years, the biological effects of hydrogen aqueous solution have gradually been accepted and recognized. Because of its high biosafety, hydrogen solution has revolutionized and actively reversed the effects of pathological damage and extremely convenient use methods (such as drinking/soaking), which has become the most interesting project in the healthcare market worldwide. one. Among them, the supersaturated hydrogen solution is particularly remarkable because of its high preparation difficulty and wide application range.

Hydrogen intake by drinking hydrogen water is currently the most widely used method and the safest and most common form of hydrogen health products. However, the solubility of hydrogen in water is very low, and it is a gas that is insoluble or even insoluble in water. Under normal temperature and normal pressure (normal temperature is 20 ° C, normal pressure is 101.3 Kpa), the hydrogen saturation dissolved amount of 1 L water is 18.2 ml or 1.6mg, usually we use the mass concentration of 1.6PPM, in view of the fact that hydrogen is difficult to dissolve in water, it becomes a barrier to drinking high hydrogen content in water.

The preparation method of drinking hydrogen water includes electrolyzed water, hydrogen dissolved water, metal magnesium reaction water and the like.

Electrolyzed water is the earliest hydrogen water used in human body, and drinking electrolyzed water for health care originated in Japan. The equipment for preparing electrolyzed water is called an electrolysis tank. The alkaline water separated by the semi-permeable membrane after electrolysis will contain a small amount of hydrogen. The deficiency of electrolyzed water is that the pH of the water will occur because the drinking water is directly electrolyzed through the electrolysis tank. If the metal electrode of the electrolytic cell acts directly on the water, a small amount of metal ions will be precipitated. If it is used for drinking, the metal ions will enter the human body with water. More importantly, the efficiency of the hydrogen aqueous solution obtained by electrolyzing water is improved. Very low and low in solubility, far below the saturation of hydrogen in aqueous solution.

Hydrogen water can also be prepared by chemical reaction of metal and water to produce hydrogen and hydroxide at normal temperature. Many metals such as iron, aluminum, magnesium, etc. can react with water to produce hydrogen, but most metals have the disadvantages of poor mouthfeel, slow reaction rate, and significant toxicity.

Summary of the invention

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for preparing a supersaturated gas solution which is capable of producing a high concentration supersaturated hydrogen solution.

In order to achieve the above object, according to an aspect of the present invention, a device for preparing a supersaturated gas solution is provided. The preparation device comprises a gas-liquid mixing device and a water tank, the gas-liquid mixing device is provided with a water inlet, a water outlet and an air inlet for communicating with the gas source, and the water tank is provided with a water suction port and a water inlet, wherein the water tank is provided with a water suction port and a water inlet The water inlet of the gas-liquid mixing device and the water suction port of the water tank are connected by a water absorption flow branch, and the water outlet of the gas-liquid mixing device and the water inlet of the water tank are connected by a drainage flow branch, and A pressure release device is disposed on the drainage flow branch, so that the gas-liquid mixture from the gas-liquid mixing device flows through the pressure release device and is discharged into the water tank.

Preferably, the gas source is a hydrogen source, a source of oxygen, a source of nitrogen, CO2 or air.

Preferably, the pressure of the gas-liquid mixture at the outlet of the gas-liquid mixing device is from 1 KG to 10 KG.

Preferably, the gas-liquid mixture at the outlet of the gas-liquid mixing device has a gas mass concentration of hydrogen ≧ 2 PPM, oxygen ≧ 20 PPM, and nitrogen ≧ 50 PPM.

Preferably, the outlet of the water tank is connected with a supersaturated gas-liquid fluid take-off branch, and the super-saturated gas-liquid fluid take-off branch comprises a normal temperature super-saturated gas-liquid fluid take-up branch and a heated super-saturated gas-liquid fluid take-off branch. , wherein the normal temperature super-saturated gas-liquid fluid take-up branch is connected in parallel with the heated super-saturated gas-liquid fluid take-off branch.

Preferably, the normal temperature super-saturated gas-liquid fluid withdrawal branch is provided with a normal temperature water outlet electromagnetic valve and a normal temperature water outlet, and the normal temperature water outlet electromagnetic valve is connected between the water tank and the normal temperature water outlet; heating the supersaturated gas liquid fluid to take Liquid The branch road is provided with a hot water outlet solenoid valve, a heater and a hot water outlet, wherein the water tank, the hot water outlet solenoid valve, the heater and the hot water outlet are connected in turn.

In one embodiment, the gas-liquid mixing device may include a volumetric pump, a gas-liquid mixer, and an impeller pump, wherein a water inlet of the gas-liquid mixing device is a water inlet of the volumetric pump, and the gas-liquid mixing device a drain port is a drain port of the impeller pump, an air inlet of the gas-liquid mixing device is an air inlet of the gas-liquid mixer, and a drain port of the volume pump and the gas-liquid mixer The water inlet is connected by a second pipe, and the water outlet of the gas-liquid mixer is connected to the water inlet of the impeller pump via a third pipe.

Preferably, the volumetric pump is a diaphragm pump.

Preferably, the volumetric pump has a nominal flow rate of 2 to 10 L/min.

Preferably, the gas-liquid mixer may employ any suitable structure having an air inlet (preferably a reverse check valve to prevent liquid from entering the air passage), the water inlet and the water outlet, as long as it can be realized The mixing of the gas and the liquid causes the gas to be present in the liquid in the form of bubbles.

In another embodiment, the preparation apparatus may further include a gas generator for generating the gas source and connected to an intake port of the gas-liquid mixing device through a first conduit.

Preferably, the gas generator is used to generate hydrogen, oxygen, nitrogen or CO2.

Preferably, the gas generator is a pure water type hydrogen generator.

In another embodiment, the pressure relief device may be a cylinder having a flow passage therein, the cylinder being divided into a front section, a middle section and a rear section, wherein the front section is connected with a pipe between the pressure releaser and the impeller pump, The rear section is connected to the water inlet of the water tank via the drainage flow branch, and the cross-sectional areas of the flow passage in the front section, the flow passage in the middle section, and the flow passage in the rear section are S1, S2, and S3, respectively. And both S1 and S3 are greater than S2.

Preferably, the pressure of the gas-liquid mixture at the inlet end of the pressure-relief is 2 to 10 times the pressure of the gas-liquid mixture at the outlet end of the pressure-relief.

Preferably, S1 is 5-15 times larger than S2, and S3 is 5-15 times larger than S2.

Preferably, the length of the middle section is 1 to 4 mm.

In another embodiment, the pressure relief device may be replaced with a needle valve or a ball valve or the like.

In another embodiment, the water tank and the pressure relief device may be connected by a fifth pipe, and the fifth pipe may be provided with a length of reducer pipe, so that the gas-liquid mixture flows through the change After the diameter pipe enters the water tank, wherein the reducer pipe comprises a plurality of sections of tubes, wherein at least two of the tubes have different inner diameters.

Preferably, the inner diameters of the adjacent two sections of the tube are different.

Preferably, the inner diameter of the plurality of sections of the tube alternates in magnitude.

Preferably, the reducer is divided into 2-40 segments. Preferably, each of the two sections having the same inner diameter has a tube having a different inner diameter between the tubes.

Preferably, the reducer is composed of a 3-20 segment tube. More preferably, the reducer is constructed of 5-12 sections of tubing.

In another embodiment, the preparation device may further be provided with an external water source branch, the external water source branch includes an external water source and a sixth pipeline, and the external water source is connected to the water absorption flow branch via the sixth pipeline Connecting, a first solenoid valve is disposed on the sixth conduit between the external water source branch and the water absorption flow branch connection point and the external water source, and the water absorption flow branch is in the connection A second solenoid valve is disposed between the point and the water tank.

Preferably, the external water source branch is further provided with a filter for filtering water from an external water source.

Preferably, the external water source branch is further provided with a sensor for detecting opening and closing of the external water source.

Preferably, the preparation device further comprises a control system, and the water tank is provided with a liquid level sensor for detecting the liquid level of the water tank, wherein the control system selects according to the detected liquid level The first solenoid valve or the second solenoid valve is opened or closed sexually.

Preferably, the drain flow branch is provided with a pressure sensor, and the pressure sensor is disposed on a pipeline between the gas-liquid mixing device and the pressure release device and is used for detecting the pressure of the gas-liquid mixture in the pipeline. .

According to another aspect of the present invention, there is provided a method of preparing a supersaturated gas solution, the method comprising the steps of:

A. providing a preparation device as described above;

B. Turn on the gas source and pass the gas into the gas-liquid mixing device;

C. After a predetermined time interval, the gas mixing device is activated, so that water is sucked out from the water suction port of the water tank, flows into the gas-liquid mixing device, and the water and the gas from the gas source are passed through the gas. After the liquid mixing device is mixed, it flows through the pressure release device and then enters the water tank via a pipe;

D. The preparation device is operated for a predetermined time after step C until the gas solution in the water tank reaches supersaturation.

Preferably, the gas source is a hydrogen source, an oxygen source, a nitrogen source carbon dioxide source or an air source.

In one embodiment, the gas-liquid mixing device may include a volumetric pump, a gas-liquid mixer, and an impeller pump, and step C includes: C1, after a predetermined time interval, starting the volumetric pump, the volumetric pump passing self-priming Water is sucked from the water suction port of the water tank and flows into the gas-liquid mixer; and C2 is separated by a predetermined time, and the startup is started. The impeller pump is such that water and gas from the gas source are mixed through the gas-liquid mixer and injected into the impeller pump.

Preferably, in the above step C1, the predetermined time interval may be 2-6 seconds.

In another embodiment, the water tank and the pressure accumulator may be connected by a fifth pipe, wherein the fifth pipe is provided with a section of a reducing pipe, wherein the reducing pipe comprises a plurality of pipes, at least The inner diameter of the two sections of tubing is different, and step E further comprises flowing the gas-liquid mixture flowing out of the pressure reducer through the reducer tube before entering the water tank.

In another embodiment, the apparatus for preparing a supersaturated gas solution further includes a concentration real-time indicating device.

According to still another aspect of the present invention, a method for preparing a supersaturated hydrogen solution is provided, which may include the following steps:

A. Providing a preparation apparatus as described above, wherein the gas source is from a hydrogen generator;

B. Starting the hydrogen generator 101 to generate a hydrogen gas source having a flow rate of 200 ml/min to 500 ml/min, a gas pressure of 0 to 4 bar, and a hydrogen concentration of more than 99.9%, and an outlet gas pressure of the hydrogen gas flowing out of the hydrogen generator is 0 to 0.4. MP;

C, after 2 to 6 seconds interval to start the volumetric pump, the volumetric pump sucks water from the water suction port of the water tank by self-priming and then flows into the gas-liquid mixer;

D, after the interval of 2 to 6 seconds, the impeller pump is started, so that water and hydrogen from the hydrogen generator are mixed by the gas-liquid mixer and injected into the impeller pump;

E. flowing a gas-liquid mixture flowing out of the impeller pump through the pressure release device, and then entering the water tank via a pipeline;

F. The preparation apparatus is operated for a predetermined time after the step E until a supersaturated hydrogen solution is formed in the water tank.

Preferably, in step F, the mass concentration of hydrogen in the water tank is detected. If it exceeds 2 mg/L, the operation is stopped; if it is less than 2 mg/L, the steps A-E are repeated.

Preferably, the gas-liquid mixture operates at a flow rate of 2 to 5 liters/min in the preparation device, and the pressure before the pressure release of the pressure release device is greater than 0.2 MPa.

In an embodiment, the water tank and the pressure release device may be connected by a fifth pipe, wherein the fifth pipe is provided with a length of reducer pipe, and the reducer pipe comprises a plurality of pipes, at least The inner diameters of the two sections of tubing are different, and step E further comprises flowing the gas-liquid mixture flowing out of the pressure reducer through the reducer tube before entering the water tank.

According to still another aspect of the present invention, a gas solution preparation device is further provided, the preparation device comprising a gas-liquid mixing device, an external water source branch, a drainage flow branch and a liquid take-up branch, wherein the gas-liquid mixing device is provided Have a water inlet, a water outlet, and an air inlet for communicating with a gas source, wherein a water inlet of the gas-liquid mixing device is connected to the external water source branch, and a drain port of the gas-liquid mixing device flows with the drain a branch line is connected, and a pressure release device is disposed on the drainage flow branch and connected to the liquid take-up branch, so that the gas-liquid mixture from the gas-liquid mixing device flows through the pressure release device and flows to the branch Describe the liquid branch.

In an embodiment, the liquid take-up branch and the pressure release device may be connected by a seventh pipe, and the seventh pipe is provided with a length of reducer pipe, so that the gas-liquid mixture flows through the After the reducer tube enters the liquid take-up branch, wherein the reducer tube comprises a plurality of sections of tubes, wherein at least two of the tubes have different inner diameters.

According to still another aspect of the present invention, an apparatus for preparing a supersaturated hydrogen solution is provided. The preparation device comprises a hydrogen generator, a gas-liquid mixer and a water tank, the gas-liquid mixer is connected to the hydrogen generator pipeline, and a gas-liquid mixer is provided between the gas-liquid mixer and the water tank to absorb water. a flow branch and a gas-liquid mixer drain flow branch, wherein the gas-liquid mixer water absorption flow branch draws water in the water tank into the gas-liquid mixer, and the gas-liquid mixer drain flow branch The gas-liquid mixture in the gas-liquid mixer is discharged into the water tank.

In one embodiment, the gas-liquid mixer water absorption flow branch is provided with a volumetric pump, and the volumetric pump is respectively connected to the gas-liquid mixer and the water tank through a pipeline.

In another embodiment, the gas-liquid mixer drainage flow branch may be provided with a vane pump and a pressure releaser, and the gas-liquid mixer, the impeller pump, the pressure release device and the water tank sequentially pass through the tube The road is connected.

In another embodiment, the water tank may be provided with a water tank suction port and a water tank water inlet, and the gas-liquid mixer water absorption flow branch is connected to the water tank through the water tank water suction port, and the gas-liquid mixer drainage flow branch The road is connected to the water tank through the water inlet of the water tank.

In another embodiment, a check valve for preventing liquid from pouring into the hydrogen generator may be connected between the hydrogen generator and the gas-liquid mixer.

In another embodiment, the water tank may be connected with a supersaturated gas-liquid fluid take-off branch, and the super-saturated gas-liquid fluid take-off branch includes a normal temperature super-saturated gas-liquid fluid take-up branch and a heated super-saturated gas-liquid a fluid take-up branch, wherein the normal temperature supersaturated gas-liquid fluid take-up branch is connected in parallel with the heated super-saturated gas-liquid fluid take-off branch.

In another embodiment, the normal temperature super-saturated gas-liquid fluid withdrawal branch may be provided with a normal temperature water outlet electromagnetic valve and a normal temperature water outlet, and the normal temperature water outlet solenoid valve is connected to the water tank and the normal temperature water outlet. Between the nozzles; and the heated supersaturated gas-liquid fluid withdrawal branch may be provided with a hot water outlet solenoid valve, a heater and a hot water outlet, wherein the water tank, the hot water outlet solenoid valve, the heating And the hot water outlets are connected in sequence.

According to still another aspect of the present invention, a method for preparing a supersaturated hydrogen solution is provided, the preparation step comprising:

A. providing a preparation device as described above;

B, starting the hydrogen generator, generating a hydrogen gas source having a flow rate of 200 ml/min to 500 ml/min, a gas pressure of 0 to 4 KG, and a hydrogen concentration of 99.99%, and an outlet gas pressure of the hydrogen gas flowing out of the hydrogen generator is 0 to 0.4 MP;

C. After two to six seconds interval, the volumetric pump is started, and the volumetric pump sucks water from the water tank suction port by self-priming, and then flows into the air inlet liquid mixer;

D. After the interval of 2-6 seconds, the impeller pump is started, water is injected into the impeller pump by the gas-liquid mixer, and the suction port of the gas-liquid mixer generates a negative pressure of 0-0.02 KG. The suction force generated by the suction pressure at the suction port end of the gas-liquid mixer and the positive pressure of the hydrogen gas flowing out of the hydrogen generator are mixed into the gas-liquid mixer and mixed with water, and the hydrogen gas exists as bubbles in the water. Mixing with water into the impeller pump, and repeatedly cutting and stirring and pressurizing by the impeller pump to form a gas-liquid mixture, the gas-liquid mixture flowing through the pressure release device, so that the gas-liquid mixture pressure is from The gas-liquid mixture in a high pressure state is converted into a normal pressure state, so that the hydrogen dissolved in the water escapes in a large amount of micro-nano bubbles under normal pressure, and the gas-liquid mixture containing the misty micro-nano bubbles is discharged from the water tank. a nozzle flowing into the water tank;

E. The preparation device is operated for a predetermined time after the step D to form a supersaturated hydrogen solution in the water tank.

In one embodiment, the predetermined time is less than 2 minutes, and the hydrogen saturation concentration of the supersaturated hydrogen solution formed in the water tank is greater than 2.5 ppm.

In another embodiment, the gas-liquid mixture operates at a flow rate of 2 to 5 liters/min in the preparation device, and the pressure before the pressure release of the pressure release device is greater than 0.2 MPa.

According to still another aspect of the present invention, there is provided a gas solution preparation apparatus, the preparation apparatus comprising a gas-liquid mixing device for mixing a gas and a liquid to form a gas-liquid mixture, the gas The liquid mixing device is provided with a water outlet for discharging the gas-liquid mixture, and the water outlet is connected to the connecting pipe. The connecting pipe is provided with a reducing pipe, wherein the reducing pipe comprises a plurality of pipes, wherein at least two pipes have different inner diameters, and a gas-liquid mixture from the gas-liquid mixing device flows through the change Diameter tube.

In one embodiment, the gas solution is a supersaturated gas solution.

In another embodiment, the gas-liquid mixing device is used to form a gas-liquid mixture containing micro-nano bubbles.

In another embodiment, the reducer is connected in series to the connecting pipe.

In another embodiment, the connecting pipe is composed of at least two sections of pipes, and the inlet end of the reducing pipe is connected An outlet of a section of the at least two sections of conduits, the outlet end of the reducer being connected to an inlet of another of the at least two sections of conduits.

In another embodiment, the reducer is integrally formed on the connecting pipe.

In another embodiment, the inner diameter of the plurality of sections of tubing alternates in magnitude.

In another embodiment, the reducer is composed of the tubes of 3-12 segments.

In another embodiment, the reducer is composed of the tube body of 3-7 segments.

In another embodiment, the reducer is assembled from a plurality of separate tubes in sequence.

In another embodiment, the reducer is connected to the connecting pipe, and an inner diameter of a portion of the reducer connected to the connecting pipe is smaller than an inner diameter of the connecting pipe.

In another embodiment, the reducer tube includes a tube body having a first inner diameter and a tube body having a second inner diameter, wherein the tube body having the first inner diameter and the tube having the second inner diameter The tubular bodies are alternated, and the first inner diameter is smaller than the second inner diameter, and a ratio of lengths between the tubular body having the first inner diameter and the tubular body having the second inner diameter is 1: 2 to 1:4.

In another embodiment, the ratio of the length between the tubular body having the first inner diameter and the tubular body having the second inner diameter is 1:2.5 to 1:3.5.

In another embodiment, the ratio of the length between the tubular body having the first inner diameter and the tubular body having the second inner diameter is 1:3.

In another embodiment, the reducer has a length of 30 to 300 mm. More preferably, the reducer has a length of 100 to 200 mm.

In another embodiment, the connecting pipe has an inner diameter equal to the second inner diameter, and the connecting pipe is connected to the pipe body having the first inner diameter.

In another embodiment, the ratio of the first inner diameter to the second inner diameter is 1:1.5 to 1:3.

In another embodiment, the ratio of the first inner diameter to the second inner diameter is 2:3 to 4:5.

In another embodiment, the first inner diameter is 1/2 to 2/3 of the inner diameter of the connecting pipe, and the second inner diameter is 4/5 to 6 of the inner diameter of the connecting pipe. /5.

According to still another aspect of the present invention, there is provided a gas solution preparation apparatus comprising a gas-liquid mixing device and a water tank, the gas-liquid mixing device being provided with a water inlet, a drain port, and for communicating with a gas source An air inlet, wherein the water tank is provided with a water suction port and a water inlet, wherein a water inlet of the gas-liquid mixing device and a water suction port of the water tank are connected by a water absorption flow branch, the gas-liquid mixing device a drain port is connected to the water inlet of the water tank through a drain flow branch, and a pressure release device is disposed on the drain flow branch, and The water tank and the pressure release device are connected by a fifth pipe. The fifth pipe is provided with a reducing pipe, wherein the reducing pipe comprises a plurality of pipes, wherein at least two of the pipes have different inner diameters, so that the gas-liquid mixture from the gas-liquid mixing device flows through The pressure release device flows into the water tank after flowing through the reducer.

According to still another aspect of the present invention, a device for preparing a gas solution is provided. The preparation device comprises a gas-liquid mixing device, an external water source branch, a drainage flow branch and a liquid take-off branch, wherein the gas-liquid mixing device is provided with a water inlet, a water outlet and an air inlet for communicating with the gas source. Wherein the water inlet of the gas-liquid mixing device is connected to the external water source branch, the drain port of the gas-liquid mixing device is connected to the drain flow branch, and the drain flow branch is provided with a pressure release device and a reducer tube connected to the liquid take-up branch, the reducer tube being located downstream of the pressure release device, such that a gas-liquid mixture from the gas-liquid mixing device sequentially flows through the pressure release device and the change After the diameter pipe flows to the liquid take-up branch.

According to still another aspect of the present invention, a device for preparing a gas solution is provided. The preparation device includes a casing and a hollow fiber membrane group, wherein the casing is provided with a liquid inlet communicating with a liquid source, an air inlet for communicating with a gas source, and a liquid discharge port, the hollow fiber membrane group A plurality of hollow fiber membrane tubes are included and housed in the housing, an inlet end of the hollow fiber membrane group is in communication with the liquid inlet, so that liquid can flow inside the hollow fiber membrane tube, and the gas is from the gas The source gas can flow from the membrane pore of the hollow fiber membrane tube into the interior of the hollow fiber membrane tube and mix with the liquid, and the outlet end of the hollow fiber membrane group communicates with the liquid discharge port, the liquid discharge The branch pipe is provided with a reducing pipe, and the reducing pipe comprises a plurality of pipes, wherein at least two of the pipes have different inner diameters, so that the gas-liquid mixture from the liquid discharge port flows through the reducing pipe.

According to still another aspect of the present invention, there is provided a method of increasing the solubility of a gas in a liquid, characterized in that the method comprises the steps of:

A, mixing a gas with a liquid to form a gas-liquid mixture;

B. flowing the gas-liquid mixture through a reducer tube, wherein the reducer tube comprises a plurality of lengths of tubes, and at least two of the tubes have different inner diameters.

In one embodiment, the gas solution is a supersaturated gas solution.

In another embodiment, the gas is present in the liquid in the form of nano or micro-nano bubbles in the gas-liquid mixture formed by step A.

In another embodiment, in step A, the gas-liquid mixture is formed by flowing a gas and a liquid separately through a gas-liquid mixing device and mixing in the gas-liquid mixing device.

In another embodiment, the gas-liquid mixing device has a stirring and shearing mechanism for agitating and shearing the gas and liquid mixture such that the gas is present in the liquid in the form of bubbles.

In another embodiment, the gas-liquid mixing device includes a volumetric pump, a gas-liquid mixer, and a vane pump, wherein a water inlet of the gas-liquid mixing device is a water inlet of the volumetric pump, and the gas-liquid mixing device a drain port is a drain port of the impeller pump, an air inlet of the gas-liquid mixing device is an air inlet of the gas-liquid mixer, and a drain port of the volume pump and the gas-liquid mixer The water inlet is connected by a second pipe, and the water outlet of the gas-liquid mixer is connected to the water inlet of the impeller pump via a third pipe.

In another embodiment, the gas-liquid mixing device includes a casing and a hollow fiber membrane group, wherein the casing is provided with a liquid inlet connected to a liquid source, an air inlet for communicating with a gas source, and a liquid discharge The hollow fiber membrane group includes a plurality of hollow fiber membrane tubes housed in the casing, and an inlet end of the hollow fiber membrane group is in communication with the liquid inlet port so that liquid can be in the hollow fiber membrane tube Internally flowing, and gas from the gas source can flow from the membrane pore of the hollow fiber membrane tube into the interior of the hollow fiber membrane tube and mix with the liquid, and the outlet end of the hollow fiber membrane group and the row The liquid port is connected.

In another embodiment, the inner diameter of the plurality of sections of tubing alternates in magnitude. The supersaturated solution preparation device of the invention adopts a method in which a gas is mixed with water in a micro-nano-scale diameter bubble, and the gas-liquid mixture is circulated through a gas-liquid mixed flow circuit to rapidly form a supersaturated gas solution in the water tank within a predetermined time and super The mass concentration of the gas in the saturated gas solution is much higher than the mass concentration of the gas prepared by the conventional method, and the mass concentration or the preparation time of the prepared gas is superior to the prior art, and the preparation efficiency is high.

DRAWINGS

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural view of an apparatus for preparing a supersaturated hydrogen solution according to a first embodiment of the present invention.

Figure 2A is a side cross-sectional view of the pressure release of Figure 1.

2B is a top plan view of the pressure relief device of FIG. 1.

3 is a flow chart showing a preparation method of a supersaturated hydrogen solution by using the preparation apparatus shown in FIG. 1.

4 is a schematic structural view of an apparatus for preparing a supersaturated hydrogen solution according to a second embodiment of the present invention.

5A and 5B are schematic views showing the structure of two embodiments of the gas-liquid mixing device of Fig. 4.

Fig. 6 is a schematic structural view of an apparatus for preparing a supersaturated hydrogen solution according to a third embodiment of the present invention.

Fig. 7 is a schematic structural view showing a supersaturated hydrogen solution production apparatus according to a fourth embodiment of the present invention.

Figure 8 is a cross-sectional view of the reducer of Figure 7. Fig. 9 is a schematic structural view showing a supersaturated gas solution preparation apparatus according to a fifth embodiment of the present invention.

Figure 10 is a schematic structural view of a gas-liquid mixer in the preparation apparatus of Figure 9, partially cut away to show Out of the internal structure.

Figure 11 is an enlarged view of a portion A in Figure 10.

Figure 12 is a schematic view showing the structure of an embodiment of a hollow fiber membrane tube in which gas-liquid mixing is schematically shown.

Figure 13 is a schematic structural view showing a supersaturated gas solution preparation apparatus according to a fifth embodiment of the present invention.

detailed description

The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiment shown in the drawings is not intended to limit the scope of the invention, but only to illustrate the spirit of the invention. The described features, structures, advantages and/or characteristics of the subject matter of the present disclosure may be combined in any suitable manner in one or more embodiments and/or embodiments. In the following description, numerous specific details are set forth to provide a A person skilled in the art will recognize that the subject matter of the present disclosure may be implemented without one or more of the specific features, details, components, materials and/or methods of the specific embodiments or embodiments. In other instances, other features and advantages are recognized in certain embodiments and/or embodiments that may not be present in all embodiments or embodiments. In other instances, well-known structures, materials or operations are not shown or described in detail to avoid obscuring aspects of the subject matter of the present disclosure. The features and advantages of the subject-matter of the present disclosure will become more apparent from the description and the appended claims.

Explanation of terms

Gas solution and supersaturated gas solution: Here, the gas solution is a mixture of a gas and a liquid. Here, the gas may be hydrogen, oxygen, nitrogen, carbon dioxide or air, etc., and the liquid includes water, juice, and the like. The manner in which the gas is bound to the liquid is typically that the gas is present in the liquid in the form of nano or micro-nano bubbles. The supersaturated gas solution means that the mass concentration of the gas in the liquid is greater than the mass saturation concentration of the various gases at normal temperature and pressure.

Chemical reaction bubble generation method: A method of generating fine bubbles by chemical reaction using a chemical substance. For example, by reacting sodium metal with water, a large amount of gas microbubbles are obtained.

Dispersed air bubble generation method: The gas is repeatedly sheared and crushed in a water body mainly by high-speed shearing, stirring, etc., thereby stably generating a large amount of microbubbles.

Dissolved gas release gas bubble generation method: mainly dissolves gas in water by pressurization, and then decompresses gas under pressure, gas Re-released from the water, producing a lot of fine bubbles.

Fig. 1 shows a preparation apparatus of a supersaturated hydrogen solution according to a first embodiment of the present invention. As shown in FIG. 1, the apparatus 100 for preparing a supersaturated hydrogen solution includes a hydrogen generator 101, a volumetric pump 102, an impeller pump 103, a gas-liquid mixer 105, and a water tank 104, wherein the gas inlet 105b of the gas-liquid mixer 105 and hydrogen gas The generator 101 is connected in a pipe, that is, connected to the gas generator 101 through a first pipe 1026. The water inlet 105a of the gas-liquid mixer 105 is connected to the water outlet 102b of the volume pump 102, that is, the two are connected by the second pipe 1025. The drain port 105c of the gas-liquid mixer 105 is connected to the water inlet 103b of the impeller pump 103 by a pipe, that is, the two are connected by a third pipe 1027. Here, the positive displacement pump 102, the gas-liquid mixer 105 and the impeller pump 103 together constitute a gas-liquid mixing device 1024, which functions to mix water from a water source with gas from a gas source to form a gas-liquid mixture having a certain pressure and concentration. . It should be understood that the gas-liquid mixing device 1024 may be replaced by other structures known or to be developed that are capable of achieving the above-described functions, as further described below. For example, the gas-liquid mixing device may be a device for preparing micro-nano bubbles by ultrasonic cavitation, a micro-nano device by electrolytic electrode method or a micro-nano bubble device by a gas-liquid two-phase flow method.

The water inlet of the positive displacement pump 102 is connected to the water suction port 1011 of the water tank 104 via the water absorption flow branch 1022, so that the water in the water tank 104 can be sucked into the volumetric pump 102 and further into the gas-liquid mixer 105. In this embodiment, the water absorption flow branch 1022 is a pipe. The volumetric pump is a diaphragm pump, and the diaphragm pump is rated at a flow rate of 5 L/min. It should be understood that diaphragm pumps having different flow rates may also be employed, for example, diaphragm pumps having a nominal flow rate of 0.5 L/min to 10 L/min. Alternatively, other types of positive displacement pumps may be employed, such as piston pumps, plunger pumps, gear pumps, vane pumps or screw pumps.

The impeller pump 103 is connected to the water inlet 1012 of the water tank 104 via a drain flow branch 1023. Specifically, a pressure relief 106 is provided on the drainage flow branch 1023. The inlet 106a of the pressure relief 106 is connected in fluid communication with the drain port 103b of the impeller pump 103 via a fourth conduit 1029. The outlet 106b of the pressure relief 106 is coupled to the water inlet 1012 of the water tank 104 via a fifth conduit 1030. The gas-liquid mixture flowing out of the gas-liquid mixer 105 is repeatedly subjected to cutting and stirring by the impeller pump 103 to form a high-pressure high-gas-concentrated gas-liquid stream, and the high-pressure high-gas-concentrated gas-liquid stream flows through the pressure-reducing device 106 to form a super-saturated gas-liquid. The mixture, the supersaturated gas-liquid mixture flows into the water tank 104 via a pipe. Specifically, the gas-liquid mixture flows into the impeller pump 103. In the pump chamber of the impeller pump 103, the gas-liquid mixture moves on the one hand with the impeller, and on the other hand, is thrown from the center of the impeller to the outer circumference under the action of centrifugal force, and the gas-liquid mixture is mixed. The body obtains pressure energy and velocity energy from the impeller. When the gas-liquid mixture flows to the pump head discharge port, part of the velocity can be converted into static pressure energy. The impeller pump is a single-stage impeller vortex pump, and the vortex pump is rated at a flow rate of 5L/min. It is 2900 rpm. Of course, the impeller pump can also be a centrifugal pump, an axial flow pump, etc., and its rated flow rate can be 0.5 L/min to 10 L/min, and the rotational speed can be 2900 to 3400 rpm.

It should be noted that if the gas-liquid mixer 105 is used as the starting point, the positive displacement pump can be considered as a part of the above-mentioned water absorption flow branch. At this time, the water absorption flow branch can be called a gas-liquid mixer water absorption flow branch, gas. The liquid mixer water absorption flow branch draws water from the water tank 104 into the gas-liquid mixer. Similarly, if the gas-liquid mixer 105 is used as the starting point, the impeller pump can be considered as a part of the above-mentioned drainage flow branch. At this time, the drainage flow branch can be called a gas-liquid mixer drainage flow branch, gas-liquid mixing. The draining flow branch discharges the gas-liquid mixture (via the pressure reliever) in the gas-liquid mixer into the water tank 104.

The working principle of the pressure release device 106 is to rapidly reduce the pressure of the gas-liquid mixture flowing through the pressure release device 106, and the gas-liquid mixture in the high pressure state is instantaneously converted into a normal pressure state, and the hydrogen gas dissolved in the water under high pressure is under normal pressure. A large number of micro-nano bubbles escape to form a gas-liquid mixture of misty micro-nano bubbles. The pressure relief 106 can be implemented in a variety of configurations.

In one embodiment, as shown in FIG. 2, the pressure relief 106 is a cylinder having a flow passage therein. The cylinder is divided into a front section 1061, a middle section 1062 and a rear section 1063, wherein the front section is connected with a pipe between the pressure relief device and the impeller pump, and the rear section is connected to the water inlet of the water tank via a drainage flow branch. The cross-sectional areas of the flow path 1061a in the front stage, the flow path 1062a in the middle stage, and the flow path 1063a in the rear stage are S1, S2, and S3, respectively, and S1 and S3 are substantially the same and much larger than S2. Preferably, S1 is 5-15 times larger than S2, and S3 is 5-15 times larger than S2. The cross-sectional shape of the flow path in the front stage, the flow path in the middle stage, and the flow path in the rear stage is a circle, an ellipse, a polygon, or the like. Preferably, the length L of the middle section is 1 to 4 mm.

Herein, the hydrogen generator is a pure water type hydrogen generator. It should be understood that the hydrogen generator may also be replaced by other sources of hydrogen, such as a hydrogen tank or other type of hydrogen generator. A check valve 108 for preventing liquid from being poured into the hydrogen generator 101 is connected between the hydrogen generator 101 and the gas-liquid mixer 105.

Herein, the gas-liquid mixer 105 is used for mixing a gas and a liquid, and its structure may employ any suitable structure known in the art as long as it can mix a gas in a liquid form in a bubble. In one embodiment, the gas-liquid mixer is a tee, one end of which is an air inlet, and the other ends are a water inlet and a water outlet.

In this embodiment, the water suction port 1011 of the water tank 104 is located at the bottom of the water tank. The water inlet 1012 of the water tank 104 is located at the bottom of the water tank and is not facing the water suction port. In one embodiment, the water tank can be easily removed for cleaning.

The water tank 104 is further provided with a water outlet 1020 located at the bottom of the water tank 104. The water outlet 1020 of the water tank 104 is connected with a supersaturated gas-liquid fluid take-out branch 1021, and the super-saturated gas-liquid fluid take-off branch 1021 includes a normal temperature super-saturated gas-liquid fluid take-up branch 10212 and a heated super-saturated gas-liquid fluid take-up liquid. Branch 10211, wherein The normal temperature super-saturated gas-liquid fluid take-up branch is connected in parallel with the heated super-saturated gas-liquid fluid take-up branch.

The normal temperature super-saturated gas-liquid fluid take-up branch is provided with a normal temperature water outlet electromagnetic valve 109 and a normal temperature water outlet 1014, and the normal temperature water outlet electromagnetic valve 109 is connected between the water tank 104 and the normal temperature water outlet 1014. The heated super-saturated gas-liquid fluid withdrawal branch is provided with a hot water outlet solenoid valve 1010, a heater 107 and a hot water outlet 1013, wherein the water tank 104, the hot water outlet solenoid valve 1010, the heater 107, and the hot water outlet 1013 pass The pipes are connected in turn. Here, the normal temperature refers to a natural ambient temperature that is not heated or cooled.

In operation, the hydrogen generator 101, the positive displacement pump 102, and the impeller pump 103 are sequentially activated, and the water (or water containing hydrogen) in the water tank 104 is sucked into the positive displacement pump 102, and then enters the gas-liquid mixer 105 and passes through the gas-liquid mixer 105. The impeller pump 103 is injected. At the same time, the suction port of the gas-liquid mixer 105 generates a negative pressure of 0 to 0.02 bar (bar), and the suction force generated by the negative pressure at the suction port end of the gas-liquid mixer 105 and the positive pressure of the hydrogen gas flowing out of the hydrogen generator 101 The hydrogen gas is sucked into the gas-liquid mixer 105 and mixed with water, and the hydrogen gas exists in the form of large bubbles in the water, and the large bubble diameter is 1 mm to 1 cm. The large bubble hydrogen gas is mixed with water and flows into the impeller pump 103, and is repeatedly subjected to cutting and stirring by the impeller pump 103 to form a high pressure and high hydrogen gas-liquid mixture. Then, the gas-liquid mixture containing a large amount of supersaturated hydrogen flows through the pressure discharge device 106 through the pipeline, the pressure of the gas-liquid mixture is rapidly lowered, and the gas-liquid mixture in the high pressure state is instantaneously converted into the normal pressure state, and the hydrogen gas dissolved in the water under high pressure. It is liberated in a large amount of micro-nano bubbles under normal pressure to form a gas-liquid mixture of misty micro-nano bubbles. Finally, a gas-liquid mixture containing misty micro-nano bubbles flows into the water tank 104 from the tank inlet 1012. The gas-liquid mixer water absorption branch circuit 1022, the gas-liquid mixer drainage flow branch 1023 and the gas-liquid mixer 105 together form a gas-liquid mixing circulation loop in which the gas-liquid mixture continuously circulates to finally reach the required hydrogen gas. Solution concentration.

3 is a flow chart showing a method of preparing a hydrogen solution using the apparatus for preparing a supersaturated hydrogen solution of FIG. 1. As shown in FIG. 3, the preparation method of the supersaturated hydrogen solution includes the following steps:

A. The hydrogen generator 101 is activated to generate a hydrogen gas source having a flow rate of 200 ml/min to 500 ml/min, a gas pressure of 0 to 4 bar, and a hydrogen gas concentration of 99.99%. The outlet pressure of the hydrogen gas flowing out of the hydrogen generator 101 is 0 to 0.4 MP. ;

B, after 2 to 6 seconds interval to start the volumetric pump 102, the volumetric pump 102 sucks water from the tank suction port 1011 by self-priming and then flows into the inlet liquid mixer 105;

C, after 2 to 6 seconds interval to start the impeller pump 103, so that water (or water containing hydrogen) and hydrogen from the hydrogen generator are mixed by the gas-liquid mixer 105 and then injected into the impeller pump 103;

D, the gas-liquid mixture flowing out of the impeller pump flows through the pressure relief device 106, and then enters the water tank 104 via the pipeline;

E, running after step D for a predetermined time until a supersaturated hydrogen solution is formed in the water tank 104; or detecting the mass concentration of hydrogen in the water tank 104, if it exceeds 2 mg/L, the operation is stopped; if less than 2 mg/L, Then, the preparation device is continuously operated until a supersaturated hydrogen solution is formed in the water tank 104, that is, the hydrogen gas concentration exceeds 2 PPM.

Through the above preparation method, after running for about 2 minutes, a supersaturated hydrogen solution is formed in the water tank 104, and the hydrogen concentration of the supersaturated hydrogen solution is not less than 2 ppm. Herein, the supersaturated hydrogen solution refers to a solution in which the mass concentration of hydrogen is not less than 2 ppm, that is, 2 mg/L.

In the above preparation method, the flow rate of the gas-liquid mixture circulating in the gas-liquid mixing flow circuit is 2 to 5 liters/min, and the pressure before the pressure release of the pressure releasing device 106 is not less than 0.2 MPa.

It should be noted that the apparatus for preparing a supersaturated hydrogen solution of the present embodiment and a preparation method thereof can also be used for preparing a "dissolution" of a gas such as oxygen, nitrogen or carbon dioxide in a solution such as water to form a corresponding supersaturated solution.

Fig. 4 shows a preparation apparatus 200 of a supersaturated hydrogen solution according to a second embodiment of the present invention. As shown in FIG. 4, the apparatus for preparing a supersaturated hydrogen solution 200 includes a hydrogen generator 201, a gas-liquid mixing device 202, and a water tank 204, wherein the gas inlet 202b of the gas-liquid mixing device 202 is connected to the hydrogen generator 201 through a pipe. The pipe 2023 is connected to the hydrogen generator 201. The water-liquid mixing device 202 and the water tank 204 are provided with a water absorption flow branch 2020 and a drainage flow branch 2021, wherein one end of the water absorption flow branch 2020 is connected to the water suction port 2011 of the water tank 204, and the other end is connected with the gas-liquid mixing device 202. The nozzle 202a is connected and used to draw water from the water tank 204 into the gas-liquid mixing device 202. One end of the drainage flow branch 2021 is connected to the drain port 202c of the gas-liquid mixing device 202, and the other end is connected to the water inlet port 2012 of the water tank 204 and is used to discharge the gas-liquid mixture in the gas-liquid mixing device 202 into the water tank 204. The hydrogen generator 201 is a pure water type hydrogen generator.

In this embodiment, the gas-liquid mixing device 202 mainly realizes mixing of hydrogen and water, so that hydrogen gas exists in water in the form of large bubbles, and the formed hydrogen and water mixture has a certain pressure. Preferably, the pressure of the hydrogen and water mixture is from 1 KG to 10 KG. The gas-liquid mixing device 202 can adopt the same combination as the volume pump 102, the gas-liquid mixer 105 and the impeller pump 103 of the embodiment shown in FIG. 1, and the connection relationship is also the same, as shown in FIG. 5A, and will not be described in detail herein. .

Optionally, the gas-liquid mixing device 202 may only be provided with a vane pump 2022. As shown in FIG. 5B, the impeller pump 2022 is integrated with a gas-liquid mixing structure and is provided with a water inlet 20221, an air inlet 20222 and a water outlet 20223. The nozzle 20221 is in communication with the water tank 204 via the water absorption flow branch 2020. The intake port 20222 is connected to the hydrogen generator 201 via a pipe 2023. A one-way valve 208 is provided on the conduit 2023. The water outlet 2023 communicates with the water tank 204 via the drainage flow branch 2021. The water absorption flow branch 2021 is further connected with an external water source branch 2024, and the external water source branch 2024 includes an external water source 2010 and a sixth pipeline 2028, and the external water source 2010 is A sixth conduit 2028 is coupled to the water absorbing flow branch 2020. A first solenoid valve 2016 is provided on the sixth conduit 2028 between the external water source branch 2024 and the water absorption flow branch 2020 connection point 2029 and the external water source 2010 for turning the external water source on or off. The external water source branch 2024 is further provided with a filter 2015 for filtering water from an external water source. The external water source branch 2024 is further provided with a sensor 2014 for detecting the opening and closing of the external water source. The sensor 2014 is, for example, a door sensor, which is connected to the external water source 2010 through a pipeline.

A second solenoid valve (circulating solenoid valve) 2017 is provided between the connection point 2029 and the water tank 204 on the water absorption flow branch 2021 for turning on or off water from the water tank 204 (or water mixed with hydrogen). The control system (not shown) of the preparation device 200 can control the solenoid valve 2016 and the solenoid valve 2017 to open or close according to the conditions of the preparation device and the signal detected by the sensor 2014, thereby selectively selecting water in the water tank 204 or The water of the external water source 2010 serves as a water source for the preparation device 200. For example, when the water of the water tank 204 is below a certain liquid level (which can be detected by the liquid level sensor 2018 installed in the water tank), the external water source 2010 is selected to be turned on. When the water level of the water tank 204 is higher than the set value and the hydrogen concentration is lower than the set value, the water tank 204 is selected as the water source.

The drainage flow branch 2021 is provided with a pressure sensor 203 and a pressure relief 206. The pressure sensor 203 is disposed on the pipeline between the gas-liquid mixing device 202 and the pressure relief 206 and is used for detecting the gas-liquid mixture in the pipeline. pressure. The detected pressure can be transmitted to a control system (not shown) of the preparation device 200 such that the control system can control the preparation device 200 based on the pressure value. When the drain flow branch pressure exceeds a preset value (for example, the set value is 4 bar), the alarm indicates that the liquid path is faulty and the operation of the preparation device is stopped.

In this embodiment, the pressure relief device 206 is the same as the embodiment shown in FIG. 1, and will not be described in detail herein.

In this embodiment, the control system can receive signals from the door sensor 2014, the pressure sensor 203, and the liquid level sensor 2018, and according to the received signal, send an instruction to select to open or close the solenoid valve 2016 or the solenoid valve 2017, and determine Whether the preparation device has a malfunction or the like. The control system can be implemented using any suitable control device known or to be developed in the art and will not be described in detail herein.

The water outlet 2025 of the water tank 204 is connected to a normal temperature or heated supersaturated gas-liquid fluid extraction branch 2026. The liquid extraction branch 2026 is provided with a heating module 207, a solenoid valve 209 and a water receiving port 2013, wherein the electromagnetic valve 209 is connected between the heating module 207 and the water receiving port 2013.

Preferably, a gas pressure sensor 208 is provided in the hydrogen generator 201 or in the conduit 2023 for detecting the pressure of the hydrogen gas, and transmitting the detected pressure to the control system of the preparation device 200, when the air pressure sensor 208 detects the pressure of the air circuit. When the signal exceeds the preset value (for example, the set value is 3 bar), the alarm indicates that the air source is faulty and a beep cycle is issued.

In operation, when the preparation device 200 is in manual operation, if the gas content is lower than the set value, the first electromagnetic valve 2016 is manually opened to perform hydration. When the water tank is full, the first solenoid valve 2016 is manually closed, and the second solenoid valve 2017 is opened to start the gas-liquid mixing device to prepare the gas-liquid mixture. When the gas content in the water tank reaches a set concentration or a desired concentration, the preparation device is manually turned off.

When there is an external water source, the fully automatic operation mode of the preparation device 200 can be enabled. The water tank 204 is provided with a liquid level sensor 2018. The liquid level sensor 2018 detects the water level in the water tank. If there is no water or below a certain low water level, the sensor sends a signal to close the second electromagnetic valve 2017 to open the first electromagnetic valve 2016. Take the external water source of the joint. Next, the gas-liquid mixing device 202 is operated to pump water from the external water source into the water tank 204. After the water tank 204 is full, the liquid level sensor 2018 sends a signal to close the first electromagnetic valve 2016, simultaneously opens the second electromagnetic valve 2017 and activates the hydrogen source 201 and the gas and liquid. The mixing device 202 starts the hydrogen water preparation. At the same time, the display (not shown) displays the hydrogen water concentration according to time. When the machine is running for a certain period of time, for example, 2 minutes, the hydrogen water concentration reaches a maximum value of 2.5 PPM, the gas source is turned off, and the gas-liquid mixing device 202 is turned off. At the same time, the timing is started, and the hydrogen content of the water in the water tank is displayed according to the time. When the hydrogen content is lowered to a set value (such as setting 1.2), the preparation is started (starting the gas source 201 and the gas-liquid mixing device 202), By circulating back and forth, it is possible to provide hydrogen water without interruption.

Fig. 6 is a view showing the configuration of a device 300 for preparing a supersaturated hydrogen solution according to a third embodiment of the present invention. In the present embodiment, the preparation device 300 is similar to the preparation device 200 shown in FIG. 4, and the main difference from the preparation device shown in FIG. 4 is that the preparation device 300 is a one-pass method for preparing a supersaturated hydrogen solution. That is, the hydrogen solution from the pressure release device 306 directly leads to the liquid take-up branch without being recycled back to the gas-liquid mixing device 302. Specifically, the preparation apparatus 300 in the present embodiment cancels the water absorption flow branch 2020 and the water tank 202 of the embodiment shown in FIG. Alternatively, the drain flow branch 3021 is directly connected to the liquid take-up branch 3022, and the water inlet of the gas-liquid mixing device 302 is only connected to the external water source branch 3020.

The preparation device 300 includes a gas-liquid mixing device 302, an external water source branch 3020, a drainage flow branch 3021, and a liquid withdrawal branch 3022. The gas-liquid mixing device 302 is provided with a water inlet 302a, a drain port 302c, and a gas source. a communicating inlet 302b, wherein the water inlet 302a of the gas-liquid mixing device 302 is connected to the external water source branch 3020, and the drain port 302c of the gas-liquid mixing device 302 is connected to the drain flowing branch 3021. And a pressure release device 306 is disposed on the drainage flow branch 3021 and connected to the liquid withdrawal branch 3022, so that the gas-liquid mixture from the gas-liquid mixing device 302 flows through the pressure release device 306. To the liquid withdrawal branch 3022. Here, the external water source branch 3020 including the solenoid valve 3016, the filter 3015, and the sensor 3014 is the same as the external water source branch 2024 shown in FIG. 4, and will not be described in detail herein. Further, the drainage flow branch 3021 including the pressure sensor 303 and the pressure relief 306 and the drainage flow branch 2021 shown in FIG. Similarly, the liquid take-up branch 3022 including the heating module 307, the solenoid valve 209, and the water receiving port 3013 is the same as the liquid-removing branch 2026 shown in FIG. 4, and will not be described in detail herein.

In the embodiment shown in Fig. 6, since the water tank and the corresponding circulation loop are eliminated, the hydrogen solution is subjected to one cycle to complete the preparation, so that the structure is simpler.

Fig. 7 is a view showing the configuration of a supersaturated hydrogen solution preparation apparatus according to a fourth embodiment of the present invention. The embodiment shown in FIG. 7 is a modification of FIG. 1 , which is different from the embodiment shown in FIG. 1 in that a fifth pipe 1030 is provided with a section of variable diameter pipe 1031 , and the variable diameter pipe 1031 is connected in fluid communication. In the fifth conduit 1030. Specifically, the fifth duct 1030 is divided into two sections, the inlet end of the reducer 1031 is connected to the outlet of one of the sections, and the outlet end of the reducer 1031 is connected to the inlet of the other section. As shown in Fig. 8, the reducer 1031 includes a plurality of tubes. A 7-segment tubular body, i.e., tubular bodies 10311, 10312, 10313, 10314, 10315, 10316, and 10317, is shown in Fig. 8, wherein at least two of the tubular bodies have different inner diameters. The tubular bodies 10311, 10313, 10315, and 10317 of the reduced diameter pipe 1031 have a first inner diameter D1, and the tubular bodies 10312, 10314, and 10316 of the reduced diameter pipe 1031 have a second inner diameter D2. The first inner diameter D1 is smaller than the second inner diameter D2, and the tube body having the first inner diameter D1 and the tube body having the second inner diameter D2 alternate. The second inner diameter D2 is equal in magnitude to the inner diameter of the fifth conduit. In another embodiment, the first inner diameter is 1/2 to 2/3 of the inner diameter of the fifth duct, and the second inner diameter is 4/5 to 6/5 of the inner diameter of the fifth duct. Preferably, the ratio of the size of the first inner diameter D1 to the second inner diameter D2 is 1:2 to 1:3. More preferably, the ratio of the size of the first inner diameter D1 to the second inner diameter D2 is 2:3 to 4:5.

As also shown in Fig. 8, the lengths of the tubes 10311, 10313, 10315, and 10317 of the reducer are L1, the lengths of the tubes 10312 and 10316 of the reducer are L2, and the length of the tube 10314 is L3. L1, L2 and L3 are each different. However, it should be understood that the length of each segment of tubing can be set as desired. In one embodiment, the reducer includes a tubular body having a first inner diameter D1 and a tubular body having a second inner diameter D2, wherein the adjacent tubular body having the first inner diameter D1 and the second inner diameter D2 The ratio of the lengths between the tubes is 1:2 to 1:4. Preferably, the ratio of the length between the adjacent tubular body having the first inner diameter D1 and the tubular body having the second inner diameter D2 is 1:2.5 to 1:3.5. More preferably, the ratio of the length between the adjacent tube body having the first inner diameter D1 and the tube body having the second inner diameter D2 is 1:3. In one embodiment, the reducer has a total length of 30 to 300 mm. More preferably, the total length of the reducer is from 100 to 200 mm.

It should be pointed out that the number of reductions of the reducer can be set as needed, that is, the reducer is divided into the required number of tubes. For example, the reducer can be divided into 3-40 sections of tubing, and each of the sections having the same inner diameter has a section of tube having a different inner diameter. Preferably, the reducer is constructed of 2-20 sections of tubing. More preferably, the reducer is composed of 3-12 sections of tubing. Optimally, the reducer is constructed of 3-7 sections of tubing. The number of reductions of the reducer is 1-20 times. It is preferably 2 to 10 times, more preferably 4 to 6 times.

Here, the reducer refers to a pipe having a varying diameter, including a reducer, a diverging tube, a pipe having an alternate inner diameter, or a combination thereof. The change of the diameter of the pipe of the reducing pipe can adjust the size distribution of the bubble and increase the solubility of the gas. This is because if the amount of water passing between the thick-diameter pipe body and the thin-diameter pipe body is equal, the flow rate and pressure of the gas-liquid mixture in the coarse-diameter pipe body are different from those of the fine-diameter pipe body, and the gas-liquid mixture is in the pipe line. Repeated extrusion in the inside, further splitting the micro-nano-diameter bubbles in the liquid to form smaller diameter bubbles, which can stay in the water for a longer period of time after entering the water tank or other container through the water outlet to achieve higher gas solubility. the result of.

The experimental data show that the hydrogen concentration of the supersaturated hydrogen solution prepared by the supersaturated hydrogen solution preparation device with the reduced diameter tube is higher than that of the supersaturated hydrogen solution preparation device without the reducer tube under the same conditions. The hydrogen concentration of the obtained supersaturated hydrogen solution is 7% to 25% higher.

It should be noted that in the embodiment shown in Figures 4 and 6, the reducer 2019 and 3019 described above may or may not be provided on the conduit between the pressure relief and the water tank. The structure of the reducing tubes 2019 and 3019 can be the same as that of the reducing tube 1031, and can also have the effect of increasing the mass concentration of hydrogen in the supersaturated hydrogen solution, which will not be described in detail herein.

9 to 12 are views showing the structure of a supersaturated gas solution preparation apparatus according to a fourth embodiment of the present invention. As shown in Figures 9-12, the preparation apparatus 100a includes a casing 4a and a hollow fiber membrane group 18a housed in the casing 4a, and the casing 4a and the hollow fiber membrane group 18a together constitute a hollow fiber membrane group gas-liquid mixer (e.g. Figure 10). The housing 4a is provided with a liquid inlet 42a communicating with a liquid source, a liquid discharge port 43a, an air inlet 44a for communicating with a gas source, and a pressure relief port 45a for discharging the prepared supersaturated gas. The solution, the pressure relief port is used to vent excess gas, as described in further detail below. In the present embodiment, the liquid source is the water tank 1a, and the gas source is the gas generator 10a. The air outlet 10aa of the gas generator is connected to the air inlet 44a of the casing 4a through a pipe. It should be understood that the liquid source may also be municipal domestic water or the like which is connected to the inlet of the casing through a pipe. The liquid may be water that meets drinking water standards, or other low-viscosity liquids that meet drinking standards other than water, such as carbonated beverages, tea beverages, coffee beverages, or alcoholic beverages. The gas source may also be a gas tank or the like.

The hollow fiber membrane group 18a includes a plurality of hollow fiber membrane tubes 19a, typically 8,000-15,000 hollow fiber membrane tubes. All of the hollow fiber membrane tubes 19a are fixedly coupled together (for example, by bonding) to form the inlet end 20a of the hollow fiber membrane group, and each hollow fiber membrane tube 19a has no gap between the inlet ends 20a, that is, a tight connection. Together, so that water or other fluid cannot flow between adjacent hollow fiber tubes at the inlet end move. The other ends of all of the hollow fiber membrane tubes are also fixedly joined together (for example, by bonding) to form the outlet end 23a of the hollow fiber membrane group 18a, and each hollow fiber membrane tube 19a has no gap between the outlet ends 23a, that is, They are tightly joined so that water or other fluids cannot flow between adjacent hollow fiber tubes to the outlet end. The hollow fiber membrane tube portions between the inlet end 20a and the outlet end 23a of the hollow fiber membrane group are spaced apart from each other, that is, there is a gap 21a therebetween, so that gas can flow in the gap 21a between the hollow fiber membrane tubes.

The inlet end 20a of the hollow fiber membrane group 18a is fixedly joined (e.g., bonded by an adhesive 22a) to the first end 41a of the housing 4a. Similarly, the outlet end 23a of the hollow fiber membrane group is fixedly joined (e.g., bonded by an adhesive) to the second end 47a of the housing. The inlet end 20a of the hollow fiber membrane group 18a communicates with the liquid inlet 42a so that liquid can flow inside the hollow fiber membrane tube. The outlet end 23a of the hollow fiber membrane group 18a communicates with the liquid discharge port 43a, so that the prepared supersaturated gas solution can be discharged. When the preparation device 100a is in operation, gas from the gas generator 10a flows from the membrane hole 191a of the hollow fiber membrane tube 19a into the interior of the hollow fiber membrane tube and is mixed with the liquid, and the gas exists in the liquid in the form of nano-sized bubbles, thereby forming supersaturation. Gas solution.

Specifically, the preparation principle of the supersaturated gas solution is “micro-pipe gas-liquid two-phase flow” method, and the micro-pipe gas-liquid two-phase flow method simultaneously controls gas and liquid flow, and disperses gas by shear force between liquid and gas. Small bubbles with uniform size, the micro-bubble generated by the gas-liquid two-phase flow method of the micro-pipe mainly relies on the shear force between the liquid and the gas, and the micro-bubble generated by the micro-bubble can be equal to or even smaller than the micro-pipe (the hollow fiber membrane wall) Small hole).

It should be noted that the inventors have found through research that different materials, membrane surface area, length, diameter, porosity and pore size of the membrane pores for the hollow fiber membrane tube group and the hollow fiber membrane tube are supersaturated for the final preparation. The gas concentration of the gas solution has a certain influence.

In one embodiment, the hollow fiber membrane group has a length of from 5 cm to 100 cm, preferably from 100 mm to 400 mm. The hollow fiber membrane group has a diameter of 10 mm to 500 mm, preferably 35 mm to 100 mm.

In one embodiment, the hollow fiber membrane tube has a wall thickness of 20-50 μm.

In one embodiment, the hollow fiber membrane has an inner diameter of from 40 μm to 400 μm, preferably from 150 to 250 μm.

In one embodiment, the diameter of the membrane pores of the hollow fiber membrane tube is from 1 nm to 1 μm, and preferably, the diameter of the membrane pores of the hollow fiber membrane tube is from 4 nm to 10 nm.

In one embodiment, the hollow fiber membrane tube has a porosity of from 30% to 70%, preferably from 40% to 50%.

Further, in order to avoid a large number (eight thousand to 15,000) of interfiber membrane adhesions in the hollow fiber membrane group, the hollow fiber membrane tube may have a corrugated structure, or a transverse weave may be added between the hollow fiber membrane tubes.

The hollow fiber membrane tube can have any suitable cross-sectional shape. Preferably, the cross section of the hollow fiber membrane tube It is round or oval.

The hollow fiber membrane tube can be made of any suitable material. Preferably, the hollow fiber membrane tube is made of a hydrophilic-hydrophobic amphoteric membrane material. Here, the hydrophilic-hydrophobic bis-membrane material refers to polysulfone (PS), polyamide (PA), polypropylene (PAN), polymethyl methacrylate (PMMA), polyether sulfone (PES), poly aryl Hydrophobic sulfone, polyester, silicone rubber, polypropylene, polyvinyl chloride, polytetrafluoroethylene, polyvinylidene fluoride and other hydrophobic materials, and are formed by doping hydrophilic materials such as polyvinylpyrrolidone (PVP). A material characterized by hydrophilicity and hydrophobicity. In one embodiment, the hollow fiber tube is gas permeable or permeable to water. In another embodiment, the hollow fiber tube is gas permeable and water impermeable. In another embodiment, the hollow fiber membrane tube is made of a hydrophobic material. In one embodiment, the hollow fiber membrane tube is made of an organic high molecular polymer. In one embodiment, the hollow fiber membrane is composed of polysulfone (PS), polyamide (PA), polypropylene (PAN), polymethyl methacrylate (PMMA), polyaryl ether sulfone, polyester, silicone rubber. Polypropylene, polyvinyl chloride, polytetrafluoroethylene, polyvinylidene fluoride or polyethersulfone (PES) is mainly doped with polyvinylpyrrolidone (PVP).

The housing is a columnar body which may be made of a material such as polycarbonate. The liquid inlet 42a is connected (e.g., by screwing) to the first end 41a of the housing 4a. The drain port 43a is connected (e.g., by screwing) to the second end 47a of the housing 4a. The intake port 44a is provided to the side wall 46a of the housing. Specifically, the intake port 44a is disposed at an upper portion of the side wall of the casing 4a and is located below the inlet end 20a of the hollow fiber tube group to be in fluid communication with the gap 21a between the hollow fiber membrane tubes. The pressure relief port 45a is disposed at a lower portion of the side wall of the casing, and the pressure relief port 45a may be equipped with a pressure relief device such as a pressure relief valve. When the pressure in the housing exceeds a predetermined threshold, for example, a value between 0.05 MPa and 0.6 MPa, the pressure relief device operates to reduce the pressure of the gas in the housing, ensure the normal operation of the preparation device 100a, and enable a certain concentration to be prepared. Gas solution.

A pressure sensor may be provided at the intake port 44a. A control device (not shown) can control the operation of the gas generator based on the pressure detected by the pressure sensor. Similarly, a pressure sensor 24a can also be provided in the gas generator. In order for the gas to be more effectively present in the liquid in the form of nano-sized bubbles, the pressure of the gas flowing in the casing should be greater than the pressure of the liquid flowing inside the hollow fiber membrane tube. In one embodiment, the pressure of the liquid is at or near atmospheric pressure, and the inlet pressure of the inlet 44a is 0.05 MPa to 0.6 MPa.

A flow sensor (not shown) is provided at the inlet port 42a, or a flow sensor 2a is provided on the line between the tank and the inlet port of the casing for detecting the amount of liquid flowing into the hollow fiber membrane group. A pump or valve 3a is also provided on the line between the water tank and the liquid inlet for turning the liquid source on or off. Preferably, the valve is a one-way valve.

The water tank 1a is provided with a water tank water inlet 16a and a water tank water outlet 15a, wherein the water tank water outlet 15a is connected via a pipeline 17a is in communication with the liquid inlet 42a of the housing. The water tank water inlet 16a is connected to the liquid source via the first branch 11a and communicates with the liquid discharge port 43a of the casing via the second branch 12a, and the first branch and the second branch are respectively provided with one- way Valves 9a and 5a. Alternatively, the water tank inlet 16a can be in direct communication with a source of liquid.

In the embodiment shown in Fig. 9, the preparation device 100a is further provided with a third branch 13a and a fourth branch 14a, one end of which is in communication with the liquid discharge port 43a of the casing, and the other of the third branch One end is the first water intake. A check valve 6a is provided on the third branch before the first water intake. On the third branch 13a, a reducing pipe 50a is provided before the check valve 6a after the liquid discharge port 43a, so that the gas-liquid mixture flows through the reducer 50a after leaving the liquid discharge port 43a. Here, the reducer 50a may be the same as the reducer used in the embodiment shown in FIG. 7, and will not be described in detail herein.

One end of the fourth branch 14a communicates with the liquid discharge port 43a of the casing, and the other end of the fourth branch is a second water intake port. The fourth branch is provided with a heating device 7a for heating the supersaturated gas solution before the second water intake. A check valve 8a is also provided on the fourth branch before the second water intake. In the embodiment shown in Fig. 9, one end of the fourth branch 14a communicating with the liquid discharge port 43a communicates with the third branch 13a. It should be understood that the fourth branch 14a can also be directly connected to the drain opening 43a by a separate line. A reducer can also be provided on the fourth branch.

In a variant, since the gas solution from the liquid discharge port of the casing is already a drinkable supersaturated gas solution, the liquid discharge port of the casing can be directly connected to the water pipe or the valve, that is, the second branch is not provided. 12a and fourth branch 14a.

In a variant, only one of the second branch 12a and the fourth branch 14a may be provided. The reducer can be disposed on either of the second branch and the fourth branch.

In a variant, as described above, instead of providing a water tank, the inlet of the housing can be connected to other sources of liquid.

In the supersaturated gas solution preparation device of the embodiment, the amount of supersaturated hydrogen water prepared is adjustable, for example, by using a hollow fiber gas-liquid mixer with different specific surface areas or a plurality of small gas-liquid mixers in parallel, 0 to 100 L can be realized. /H (more large amount) Instant preparation of supersaturated hydrogen water.

The key to the apparatus for preparing a supersaturated gas solution of the present embodiment is to provide a hollow fiber membrane group including a plurality of hollow fiber membrane tubes, and then to cause a liquid to flow inside the hollow fiber membrane tube while allowing gas to pass through the hollow fiber membrane The membrane pores of the tube enter the inside of the hollow fiber membrane tube and are mixed with a liquid, thereby producing a supersaturated gas solution. Under the above principle method, the preparation device of various structural forms can be used to achieve the object of the embodiment.

Figure 13 is a diagram showing the structure of a supersaturated gas solution preparation device 500 according to a fifth embodiment of the present invention. schematic diagram. As shown in FIG. 13, the supersaturated gas solution preparation device 500 includes a gas-liquid mixing device 61 for forming a gas-liquid mixture containing micro-nano bubbles, the structure of which may be any suitable or known to be developed. It is capable of producing a structure of a gas-liquid mixture containing micro-nano bubbles.

The drain port of the gas-liquid mixing device 61 is connected to the discharge branch 62. The discharge branch 62 is provided with a pump 64, a reduction pipe 65, and a water intake port 67 which are arranged in this order along the flow direction of the liquid in the discharge pipe 66. A circulation branch 63 is further provided on the pipe 66 between the reduction pipe 65 and the water intake port 67, and a valve 68 is provided on the circulation branch 63.

In this embodiment, the structure of the reducer 65 is the same as or similar to the reducer of the embodiment shown in FIG. 7, and will not be described in detail herein.

It should be noted that in the above embodiments, the reducer itself may be part of the system duct or may be integrally formed on the system duct. In this context, the reducer can be placed in a discharge conduit or in a system conduit that flows through a gas-liquid mixture, collectively referred to as a connecting conduit.

It is further noted that the above-described preparation apparatus for preparing a hydrogen solution can also be used to prepare a solution such as a supersaturated oxygen solution, a supersaturated nitrogen solution, a supersaturated air solution or a supersaturated carbon dioxide solution. The following examples illustrate how to prepare a supersaturated oxygen solution or a supersaturated nitrogen solution using the preparation apparatus of the present invention.

Application Example 1: Preparation of Supersaturated Oxygen Solution

This application example uses the preparation apparatus shown in Fig. 1 or Fig. 4 to prepare a supersaturated oxygen solution. The preparation steps are as follows: 1. Start the oxygen generator to generate oxygen with a flow rate of 600 ml/min, a gas pressure of standard atmospheric pressure, and an oxygen concentration of 40%, and an outlet pressure of the oxygen source is 0 to 0.4 MP;

2. After 3 to 6 seconds, the volumetric pump is started. The volumetric pump sucks water from the water tank suction port by self-priming, and then flows into the air inlet liquid mixer; in this example, the volumetric pump is a gear pump;

3. After 3 to 6 seconds, the impeller pump is started. The water is injected into the impeller pump by the gas-liquid mixer. The suction port of the gas-liquid mixer 5 generates a negative pressure of 0 to 0.4 bar, and the suction port of the gas-liquid mixer is used. Under the suction generated by the negative pressure and the positive pressure of the oxygen generator flowing out of the oxygen, the oxygen is sucked into the gas-liquid mixer and mixed with water. The oxygen exists in the form of large bubbles in the water. The large bubble diameter is 1 mm to 1 cm, and the large bubble oxygen and water The mixture flows into the impeller pump, and then repeatedly pumps and agitates the impeller to form a high-pressure and high-concentration gas-liquid mixture. The gas-liquid mixture containing a large amount of supersaturated oxygen flows through the shut-off valve, and the pressure of the gas-liquid mixture rapidly decreases, and the high pressure state The gas-liquid mixture is instantaneously converted into a normal pressure state, and the oxygen dissolved in the water under high pressure escapes in a large amount of micro-nano bubbles under normal pressure, and the gas-liquid mixture forming the misty micro-nano bubbles flows into the water tank from the water tank outlet. In this case, the impeller pump is a centrifugal pump;

4. The apparatus is operated for a predetermined period of time after step 3 until a supersaturated oxygen solution is formed in the water tank.

In general, when preparing the supersaturated oxygen solution, the operation time of the above preparation device is less than two minutes, and a supersaturated oxygen solution can be formed in the water tank, and the oxygen concentration of the supersaturated oxygen solution is not less than 20 ppm (20 degrees Celsius). Under standard atmospheric pressure).

The flow rate of the gas-liquid mixture circulating in the preparation device is 5 liters/min, and the pressure of the fluid before the pressure relief valve is not less than 0.2 MPa.

Application Example 2: Preparation of Supersaturated Nitrogen Solution

This application example uses the preparation apparatus shown in Figs. 1 and 4 to prepare a supersaturated nitrogen solution. The preparation steps are as follows:

1. Start the nitrogen generator to generate nitrogen gas with a flow rate of 300 ml/min, a gas pressure of standard atmospheric pressure and a nitrogen concentration of 99%, and an outlet pressure of the nitrogen source of 0 to 0.4 MP;

2. Start the impeller pump of the integrated gas-liquid mixer after 3 to 6 seconds intervals;

3. The water enters from the water inlet of the impeller pump, and generates a negative pressure of 0 to 0.4 bar at the inlet of the impeller pump, under the suction generated by the negative pressure at the inlet end and the positive pressure of the nitrogen generator 1 flowing out of the nitrogen, Nitrogen gas is sucked into the impeller pump 2b and mixed with water. After repeated cutting and stirring, the high pressure and high concentration gas-liquid mixture flows out through the water outlet of the impeller pump, and the gas-liquid mixture containing a large amount of supersaturated nitrogen flows through the pressure release device. The pressure of the liquid mixture is rapidly reduced, and the gas-liquid mixture in a high pressure state is instantaneously converted into a normal pressure state, and the nitrogen gas dissolved in the water under high pressure escapes in a large amount of micro-nano bubbles under normal pressure to form a gas of misty micro-nano bubbles. The liquid mixture flows into the water tank from the water inlet of the water tank;

4. The apparatus is operated for a predetermined period of time after step 3 until a supersaturated nitrogen solution is formed in the water tank.

In general, when preparing a supersaturated nitrogen solution, the operation time of the above preparation device does not exceed 4 minutes, and a supersaturated nitrogen solution is formed in the water tank, and the nitrogen concentration of the supersaturated nitrogen solution is not less than 50 ppm (20 degrees Celsius, standard atmospheric pressure). In case). For comparison, the saturated mass solubility of nitrogen at normal temperature and pressure (0 ° C, pressure of 1.01 × 105 Pa) was 30 ppm.

The flow rate of the gas-liquid mixture circulating in the preparation device is 2 liters/min, the pressure before the pressure release of the pressure release device is not less than 0.2 MPa, and the volume of the water tank is 4 liters.

The supersaturated nitrogen water prepared by the above method has a strong fresh-keeping effect after being quickly frozen into nitrogen ice cubes, and can be widely used in the preservation of seafood products.

As an illustrative example, an example of the hydrogen water solubility obtained by using the reducing tube and the different reducing tube structure when the supersaturated hydrogen solution is prepared by the preparation apparatus shown in Fig. 1 is given below.

The test environment is as follows:

Gas source concentration: 99.99% purity hydrogen source

System fluid pressure: 5KG

System liquid flow rate: 3L/min

In-tube diameter of the fifth pipe of the system drainage flow branch: 6.165mm

After running for 2 minutes, the system does not add water to reduce the diameter of the pipe: 2.4 PPM

The following tables are the measured hydrogen water concentrations after adding various reducers on the basis of the above-mentioned system under the conditions of three different diameters and different diameters and different thicknesses in the reducer.

Table 1: The inner diameter of the system pipe is 6.35mm, the inner diameter D1 of the reducer pipe is 4mm, and the inner diameter D2 is 6.35mm.

Table 2: The inner diameter of the system pipe is 6.35mm, the inner diameter D1 of the reducer pipe is 6.35mm, and the inner diameter D2 is 9.525mm.

Table 3: The inner diameter of the system pipe is 9.525mm, the inner diameter D1 of the reducer pipe is 6.35mm, and the inner diameter D2 is 12.7mm.

From the experimental data in the above table, the following conclusions can be drawn:

1. The reduction of the diameter of the reducer is six times (seven stages) and the efficiency reaches a high value. The more the number of reductions does not further increase the dissolved amount of gas in the liquid;

2. When the ratio of the thickness to the diameter of the reducer is 3:1, the effect of adjusting the generation of nanobubbles is better, and the increase of the gas dissolved in the liquid is larger.

3. The thick inner diameter of the reducer tube is the same as the inner diameter of the system pipeline. When the diameter is smaller than the inner diameter of the system pipeline, the effect of adjusting the nanobubbles is better when the thickness to diameter ratio is 3:2, and the gas is dissolved in the liquid. Large amount.

Exemplary preparations for preparing various supersaturated gas solutions using the technical scheme of the present invention are given below.

Preparation Example 1: Preparation of Supersaturated Oxygen Solution

Gas source concentration: 90% pure oxygen source.

Preparation apparatus: The preparation apparatus of the example shown in Fig. 1.

System fluid pressure: 3KG.

System liquid flow rate: 3L/min.

The inner diameter of the fifth pipe of the system drainage flow branch: 6.165 mm.

After running for 2 minutes, the system does not add water to the outlet tube: 36 PPM.

If the reducer is added, the oxygen content of the effluent is 44 PPM.

Preparation Example 2: Preparation of supersaturated nitrogen solution

Gas source concentration: a nitrogen source of 99.99% purity.

Preparation apparatus: The preparation apparatus of the embodiment shown in Fig. 7.

System fluid pressure: atmospheric pressure.

System air pressure: 0.8KG.

System liquid flow rate: 1.5 L / min.

The diameter of the system outlet pipe: 6.165mm.

After running for 2 minutes, the system does not add the diameter of the diameter water: 40 PPM.

If the reducer is added, the oxygen content of the effluent is 48 PPM.

Preparation Example 3: Preparation of Supersaturated Hydrogen Solution

Gas source: Metal sodium and water chemically react to produce hydrogen.

Preparation apparatus: The preparation apparatus of the example shown in Fig. 13.

System pressure: atmospheric pressure.

System fluid flow rate: 2 L / min.

System outlet pipe diameter: 6.165mm.

After 2 minutes of operation, the system does not add hydrogen to the reduced diameter pipe: 1.2 PPM.

If the reducing pipe is added, the effluent contains 1.4 PPM of hydrogen in the same conditions.

It can be seen from the above preparation examples that under the same preparation device, the gas concentration in the gas-liquid mixture prepared by adding the supersaturated gas solution preparation device with the reducer is larger than that prepared by the preparation device without increasing the reducer The concentration of gas in the obtained gas-liquid mixture.

The preferred embodiments of the present invention have been described in detail hereinabove, and it is understood that various modifications and changes may be made by those skilled in the art. These equivalent forms are also within the scope defined by the claims appended hereto.

Claims (41)

1. A device (100; 200) for preparing a supersaturated gas solution, characterized in that the preparation device comprises a gas-liquid mixing device (1024; 202) and a water tank (104; 204), the gas-liquid mixing device (1024; 202) providing a water inlet (102a; 202a), a drain port (103b; 202c), and an air inlet (105b; 202b) for communicating with the gas source (101; 201), and the water tank is provided with a water suction port ( 1011; 2011) and water inlet (1012; 2012), wherein the water inlet (102a; 202a) of the gas-liquid mixing device (1024; 202) and the water suction port of the water tank (104; 204) (1011; 2011) Connected by a water absorption flow branch (1022; 2020), a drain port (103b; 202c) of the gas-liquid mixing device (1024; 202) and a water inlet 1012 of the water tank (104; 204); Connected by a drainage flow branch (1023; 2021), and a discharge accumulator (106; 206) is disposed on the drainage flow branch (1023; 2021), thereby coming from the gas-liquid mixing device (1024; 202) The gas-liquid mixture flows through the pressure release (106; 206) and is discharged into the water tank (104; 204).
2. The preparation apparatus according to claim 1, wherein the gas-liquid mixing device comprises a volumetric pump (102), a gas-liquid mixer (105), and an impeller pump (103), wherein the gas-liquid mixing device ( The water inlet (102a) of 1024; 202) is the water inlet (102a) of the volumetric pump (102), and the water outlet (103b) of the gas-liquid mixing device (1024; 202) is the impeller pump (103) a drain port (103b), an air inlet (105b) of the gas-liquid mixing device (1024; 202) is an air inlet (105b) of the gas-liquid mixer (105), and the volume pump (102) The water outlet (102b) is connected to the water inlet (105a) of the gas-liquid mixer (105) through a second conduit (1025), and the water outlet (105c) of the gas-liquid mixer (105) is passed through a third A pipe (1027) is connected to the water inlet (103a) of the impeller pump (103).
3. The preparation apparatus according to claim 1, wherein said preparation device (100; 200) further comprises a gas generator for generating said gas source (101; 201) and passing through said first conduit (1026; 2023) is connected to the intake port of the gas-liquid mixing device (1024; 202).
4. The preparation apparatus according to claim 1, wherein the pressure release device is a cylinder having a flow passage therein, and the cylinder is divided into a front section (1061), a middle section (1062), and a rear section (1063). Wherein the front section (1061) is connected to the conduit (1029; 2021) between the pressure relief and the impeller pump, and the rear section (1063) is connected to the water inlet of the water tank via the fifth conduit (1030; 2027), and in the front section The cross-sectional areas of the flow passages, the flow passages in the middle section, and the flow passages in the rear section are S1, S2, and S3, respectively, and both S1 and S3 are larger than S2.
5. The preparation apparatus according to claim 1, wherein said water tank (104; 204) and said pressure releaser (106; 206) are connected by a fifth pipe (1030; 2027), said fifth Pipeline (1030; 2027) is provided with a section of reducing pipe (1031; 2019), so that the gas-liquid mixture flows into the water tank (104; 204) after flowing through the reducing pipe (1031; 2019), wherein the reducing pipe The tube (1031; 2019) comprises a plurality of sections of tubing, wherein at least two of the tubes have different inner diameters.
6. The preparation apparatus according to claim 1, wherein the preparation device (200) is further provided with an external water source branch (2024), the external water source branch (2024) including an external water source (2010) and a sixth a pipe (2028), the external water source (2010) is connected to the water absorption flow branch (2020) via the sixth pipe (2028), the external water source branch (2024) and the water absorption flow branch a first solenoid valve (2016) is disposed on the sixth conduit (2028) between the connection point (2029) and the external water source (2010), and the water absorption flow branch (2020) is A second solenoid valve (2017) is disposed between the connection point (2029) and the water tank (204).
7. A method for preparing a supersaturated gas solution, characterized in that the preparation method comprises the following steps:

   A. Providing the preparation apparatus according to claim 1;

   B. Turn on the gas source and pass the gas into the gas-liquid mixing device;

   C. After a predetermined time interval, the gas mixing device is activated, so that water is sucked out from the water suction port of the water tank, flows into the gas-liquid mixing device, and the water and the gas from the gas source are passed through the gas. After the liquid mixing device is mixed, it flows through the pressure release device and then enters the water tank via a pipe;

   D. The preparation device is operated for a predetermined time after step C until the gas solution in the water tank reaches supersaturation.
8. The preparation method according to claim 7, wherein the gas source is a hydrogen source, an oxygen source, a nitrogen source carbon dioxide source or an air source.
9. The preparation method according to claim 7, wherein the gas-liquid mixing device comprises a volumetric pump, a gas-liquid mixer and an impeller pump, and the step C comprises: C1, after a predetermined time interval, starting the volumetric pump, The volumetric pump draws water from the suction port of the water tank by self-priming and then flows into the gas-liquid mixer; and C2, after a predetermined time interval, starts the impeller pump to make water and gas from the gas source The impeller pump is injected after being mixed through the gas-liquid mixer.
10. The preparation method according to claim 7, wherein the water tank and the pressure release device are connected by a fifth pipe, wherein the fifth pipe is provided with a section of a reducer pipe, and the reducer pipe The plurality of lengths of tubes are included, wherein at least two of the tubes have different inner diameters, and step E further comprises flowing the gas-liquid mixture flowing out of the pressure reducer through the reducer before entering the water tank.
11. A method for preparing a supersaturated hydrogen solution, characterized in that the preparation method comprises the following step:

    A. The preparation apparatus according to claim 2, wherein the gas source is from a hydrogen generator;

    B. Starting the hydrogen generator 101 to generate a hydrogen gas source having a flow rate of 200 ml/min to 500 ml/min, a gas pressure of 0 to 4 bar, and a hydrogen concentration of more than 99.9%, and an outlet gas pressure of the hydrogen gas flowing out of the hydrogen generator is 0 to 0.4. MP;

    C, after 2 to 6 seconds interval to start the volumetric pump, the volumetric pump sucks water from the water suction port of the water tank by self-priming and then flows into the gas-liquid mixer;

    D, after the interval of 2 to 6 seconds, the impeller pump is started, so that water and hydrogen from the hydrogen generator are mixed by the gas-liquid mixer and injected into the impeller pump;

    E. flowing a gas-liquid mixture flowing out of the impeller pump through the pressure release device, and then entering the water tank via a pipeline;

    F. The preparation apparatus is operated for a predetermined time after the step E until a supersaturated hydrogen solution is formed in the water tank.
12. The preparation method according to claim 11, wherein the water tank and the pressure release device are connected by a fifth pipe, wherein the fifth pipe is provided with a section of a reducer pipe, and the reducer pipe The plurality of lengths of tubes are included, wherein at least two of the tubes have different inner diameters, and step E further comprises flowing the gas-liquid mixture flowing out of the pressure reducer through the reducer before entering the water tank.
13. A gas solution preparation device (300), characterized in that the preparation device (300) comprises a gas-liquid mixing device (302), an external water source branch (3020), a drainage flow branch (3021), and a liquid extraction branch Road (3022), the gas-liquid mixing device (302) is provided with a water inlet (302a), a drain port (302c), and an air inlet (302b) for communicating with a gas source, wherein the gas-liquid mixing device ( a water inlet (302a) of 302) is connected to the external water source branch (3020), a drain port (302c) of the gas-liquid mixing device (302) is connected to the drain flow branch (3021), and A discharge accumulator (306) is disposed on the drainage flow branch (3021) and is coupled to the liquid withdrawal branch (3022) such that a gas-liquid mixture from the gas-liquid mixing device (302) flows through the release The pressure device (306) then flows to the liquid withdrawal branch (3022).
14. The preparation apparatus according to claim 13, wherein the liquid take-up branch (3022) and the pressure release (306) are connected by a seventh pipe (3024), and the seventh pipe (3024) a section of the reducer (3019) is disposed such that the gas-liquid mixture flows through the reducer (3019) and enters the take-up branch (3022), wherein the reducer (3019) The utility model comprises a plurality of sections of tubes, wherein at least two of the tubes have different inner diameters.
15. A device for preparing a supersaturated hydrogen solution, comprising: a hydrogen generator (101), a gas-liquid mixer (105) and a water tank (104), the gas-liquid mixer (105) is connected to the hydrogen generator (101), the gas-liquid mixer (105) and the water tank (104) There is a gas-liquid mixer water absorption flow branch (1022) and a gas-liquid mixer drainage flow branch (1023), wherein the gas-liquid mixer water absorption flow branch draws water from the water tank (104) The gas-liquid mixer (105), the gas-liquid mixer drain flow branch (1023) discharges the gas-liquid mixture in the gas-liquid mixer (105) into the water tank (104).
16. The apparatus for preparing a supersaturated hydrogen solution according to claim 15, wherein the gas-liquid mixer water absorption flow branch (1022) is provided with a volumetric pump (102), and the volumetric pump (102) passes through the tube. The road is connected to the gas-liquid mixer (105) and the water tank (104), respectively.
17. The apparatus for preparing a supersaturated hydrogen solution according to claim 15, wherein the gas-liquid mixer drainage flow branch (1023) is provided with an impeller pump (103) and a pressure relief device (106), The gas-liquid mixer (105), the impeller pump (103), the pressure release (106), and the water tank (104) are sequentially connected by a pipe.
18. The apparatus for preparing a supersaturated hydrogen solution according to claim 15, wherein the water tank (104) is provided with a water tank suction port (1011) and a water tank water inlet (1012), and the gas-liquid mixer absorbs and flows. A branch (1022) is connected to the water tank (104) through the tank suction port (1011), and the gas-liquid mixer drain flow branch (1023) passes through the tank water inlet (1012) and the water tank (104) connection.
19. The apparatus for preparing a supersaturated hydrogen solution according to claim 15, wherein a connection between the hydrogen generator (101) and the gas-liquid mixer (105) is prevented from pouring back into the hydrogen generator. Check valve (108) of (101).
20. The apparatus for preparing a supersaturated hydrogen solution according to any one of claims 15 to 19, characterized in that: the water tank (104) is connected with a supersaturated gas-liquid fluid take-out branch (1021), the super-saturated gas The liquid fluid take-up branch (1021) comprises a normal temperature super-saturated gas-liquid fluid take-up branch (10211) and a heated super-saturated gas-liquid fluid take-off branch (10212), wherein the normal temperature super-saturated gas-liquid fluid take-off branch The road (10211) is connected in parallel with the heated supersaturated gas-liquid fluid extraction branch (10212).
21. The apparatus for preparing a supersaturated hydrogen solution according to claim 20, wherein the normal temperature super-saturated gas-liquid fluid extraction branch (10212) is provided with a normal temperature water outlet electromagnetic valve (109) and a normal temperature water outlet. (1014), the normal temperature water outlet solenoid valve (109) is connected between the water tank (104) and the normal temperature water outlet (1014); and the heated supersaturated gas-liquid fluid extraction branch (10211) ) a hot water outlet solenoid valve (1010), a heater (107), and a hot water outlet (1013), wherein the water tank (104), the hot water outlet solenoid valve (1010), the heater (107), and The hot water outlets (1013) are connected in sequence.
22. A method for preparing a supersaturated hydrogen solution, characterized in that the preparation steps include:

    A. Providing the preparation apparatus according to claim 15;

    B. Starting the hydrogen generator (101) to generate a hydrogen gas source having a flow rate of 200 ml/min to 500 ml/min, a gas pressure of 0 to 4 KG, and a hydrogen concentration of 99.99%, and an outlet gas pressure of the hydrogen gas flowing out of the hydrogen generator (101) 0 to 0.4 MP;

    C, after two to six seconds interval to start the volumetric pump (2), the volumetric pump (2) through the self-priming water is sucked out of the tank suction port (11) and then the inlet liquid mixture (5);

    D. After the interval of 2-6 seconds, the impeller pump (103) is started, water is injected into the impeller pump (103) by the gas-liquid mixer (105), and the gas-liquid mixer (5) is aspirated. The port generates a negative pressure of 0 to 0.02 KG, and the hydrogen is sucked by the suction generated by the negative pressure at the suction port end of the gas-liquid mixer (105) and the positive pressure of the hydrogen gas flowing out of the hydrogen generator (101). The gas-liquid mixer (105) is mixed with water, and the hydrogen gas is present in the form of bubbles in water and mixed with water to flow into the impeller pump (103), and then repeatedly agitated and pressurized by the impeller pump (103) to form a gas. a liquid mixture, the gas-liquid mixture flowing through the pressure release device (106), such that the gas-liquid mixture pressure is converted from a gas-liquid mixture in a high pressure state to a normal pressure state, so that hydrogen gas dissolved in the water is Under normal pressure, a large amount of micro-nano bubbles escape, and a gas-liquid mixture containing misty micro-nano bubbles flows into the water tank (104) from the water outlet (1012) of the water tank (104);

    E. The preparation device is operated for a predetermined time after the step D to form a supersaturated hydrogen solution in the water tank (4).
23. The method for preparing a supersaturated hydrogen solution according to claim 22, wherein the predetermined time is less than 2 minutes, and the hydrogen concentration of the supersaturated hydrogen solution formed in the water tank (104) is greater than 2.5 ppm.
24. The method for preparing a supersaturated hydrogen solution according to claim 22, wherein the gas-liquid mixture is operated at a flow rate of 2 to 5 liters/min in the preparation device, and the pressure release device (106) The pressure before release is greater than 0.2 MPa.
25. A gas solution preparation device, the preparation device comprising a gas-liquid mixing device for mixing a gas and a liquid to form a gas-liquid mixture, the gas-liquid mixing device being provided for discharging the gas a water outlet of the liquid mixture, the water outlet being connected to the connecting pipe, characterized in that the connection The pipe is provided with a reducing pipe, and the reducing pipe comprises a plurality of pipes, wherein at least two of the pipes have different inner diameters, and a gas-liquid mixture from the gas-liquid mixing device flows through the reducing pipe.
26. The apparatus for preparing a gas solution according to claim 25, wherein the inner diameter of said plurality of tubes is alternately changed in size.
27. The apparatus for preparing a gas solution according to claim 26, wherein the reducer is composed of the tubes of 3-12 stages.
28. The apparatus for preparing a gas solution according to claim 25, wherein the reducer is assembled by sequentially connecting a plurality of separate tubes.
29. The apparatus for preparing a gas solution according to claim 25, wherein the reducing pipe is connected to the connecting pipe, and an inner diameter of a portion of the reducing pipe connected to the connecting pipe is smaller than Connect the inner diameter of the pipe.
30. The apparatus for preparing a gas solution according to claim 25, wherein said reducer tube comprises a tube body having a first inner diameter and a tube body having a second inner diameter, wherein said tube having a first inner diameter The tubular body and the tubular body having the second inner diameter alternate, and the first inner diameter is smaller than the second inner diameter, and the tubular body having the first inner diameter and the second inner diameter The ratio of the lengths between the tubes is 1:2 to 1:4.
31. The apparatus for preparing a gas solution according to claim 30, wherein an inner diameter of the connecting duct is equal to the second inner diameter, and the connecting duct is connected to the tubular body having the first inner diameter.
32. The apparatus for preparing a gas solution according to claim 30, wherein a ratio of the first inner diameter to the second inner diameter is 1:1.5 to 1:3.
33. The apparatus for preparing a gas solution according to claim 30, wherein said first inner diameter is 1/2 to 2/3 of an inner diameter of said connecting duct, and said second inner diameter is said Connect the inner diameter of the pipe to 4/5 to 6/5.
34. A gas solution preparation device, comprising: a gas-liquid mixing device and a water tank, wherein the gas-liquid mixing device is provided with a water inlet, a water outlet, and an air inlet for communicating with the gas source, and the water tank is provided a water suction port and a water inlet, wherein the water inlet of the gas-liquid mixing device and the water suction port of the water tank are connected by a water absorption flow branch, and the water outlet of the gas-liquid mixing device and the water inlet of the water tank Connected by a drainage flow branch, and a pressure release device is disposed on the drainage flow branch, and the water tank and the pressure release device are connected by a fifth pipeline, wherein the fifth pipeline is provided a reducer tube, the reducer tube comprising The multi-stage pipe body, wherein at least two of the pipe bodies have different inner diameters, so that the gas-liquid mixture from the gas-liquid mixing device flows through the pressure release device, flows through the reducer pipe, and enters the water tank.
35. A preparation device for a gas solution, characterized in that the preparation device comprises a gas-liquid mixing device, an external water source branch, a drainage flow branch and a liquid take-up branch, and the gas-liquid mixing device is provided with a water inlet and a water outlet And an air inlet for communicating with the air source, wherein the water inlet of the gas-liquid mixing device is connected to the external water source branch, and the water outlet of the gas-liquid mixing device is connected to the drainage flow branch, and a discharge accumulator and a reducer are disposed on the drain flow branch and connected to the liquid take-up branch, the reducer is located downstream of the pressure reducer, thereby obtaining a gas-liquid mixture from the gas-liquid mixing device The pressure release device and the reducer tube are sequentially flowed to the liquid take-up branch.
36. A device for preparing a gas solution, characterized in that the preparation device comprises a casing and a hollow fiber membrane group, wherein the casing is provided with a liquid inlet communicating with a liquid source, and an air inlet for communicating with the gas source a port and a liquid discharge port, the hollow fiber membrane group comprising a plurality of hollow fiber membrane tubes housed in the housing, an inlet end of the hollow fiber membrane group being in communication with the liquid inlet port so that liquid can be in the hollow The inside of the fiber membrane tube flows, and gas from the gas source can flow from the membrane pore of the hollow fiber membrane tube into the interior of the hollow fiber membrane tube and mix with the liquid, and the outlet end of the hollow fiber membrane group Communicating with the liquid discharge port, the liquid discharge branch is provided with a reducer pipe, and the reducer pipe comprises a plurality of pipe bodies, wherein at least two of the pipe bodies have different inner diameters, so that the liquid discharge port is from the liquid discharge port A gas-liquid mixture flows through the reducer.
37. A method of increasing the solubility of a gas in a liquid, characterized in that the method comprises the steps of:

    A, mixing a gas with a liquid to form a gas-liquid mixture;

    B. flowing the gas-liquid mixture through a reducer tube, wherein the reducer tube comprises a plurality of lengths of tubes, and at least two of the tubes have different inner diameters.
38. The method of claim 37 wherein said gaseous solution is a supersaturated gas solution.
39. The method according to claim 37, wherein in the gas-liquid mixture formed in the step A, the gas is present in the liquid in the form of nano or micro-nano bubbles.
40. The method according to claim 37, wherein in the step A, the gas-liquid mixture is formed by flowing a gas and a liquid separately through a gas-liquid mixing device and mixing in the gas-liquid mixing device.
41. 40. The method of claim 37 wherein the inner diameter of the plurality of sections of tubing alternates in magnitude.

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