CN114645282A - Electrolysis device for realizing accumulated NO separation and use method thereof - Google Patents
Electrolysis device for realizing accumulated NO separation and use method thereof Download PDFInfo
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- CN114645282A CN114645282A CN202011502839.7A CN202011502839A CN114645282A CN 114645282 A CN114645282 A CN 114645282A CN 202011502839 A CN202011502839 A CN 202011502839A CN 114645282 A CN114645282 A CN 114645282A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
- B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/268—Drying gases or vapours by diffusion
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
Abstract
The invention provides an electrolysis device for realizing the separation of accumulated NO and a using method thereof, wherein the electrolysis device comprises an electrolytic cell, the electrolytic cell comprises a shell, electrolyte is injected into the shell, at least one pair of electrodes immersed in the electrolyte is arranged in the shell, and the electrolysis device also comprises a gas-liquid separator circularly connected with the electrolytic cell; and the electrolyte enters a gas-liquid separator, the separated gas is discharged from the gas-liquid separator, and the separated liquid flows back into the shell. The using method comprises the following steps: the electrolyte is electrolyzed to generate nitric oxide, and the nitric oxide is released after the concentration of the nitric oxide meets the requirement; after the release of nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is separated by a gas-liquid separator. The electrolytic cell is circularly connected with the gas-liquid separator, so that the influence of residual nitric oxide on the electrolyte and the electrode is avoided, the stability and consistency of the concentration of nitric oxide generated by each electrolysis are ensured, and the waiting time of a user in concentration switching can be effectively shortened.
Description
Technical Field
The invention belongs to the technical field of medical instruments, relates to an electrolysis device for realizing the separation of accumulated NO, and particularly relates to an electrolysis device for realizing the separation of accumulated NO and a use method thereof.
Background
Nitric oxide is an endogenous small molecular substance with important physiological functions, and the direct nitric oxide inhalation therapy is approved by the food and drug administration of the United states and serves as a treatment means for treating the continuous pulmonary hypertension of the newborn, and is proved to improve the oxidation capability of the organism and reduce the high-risk critical disease in vitro cardiopulmonary support treatment. The artificial administration of a suitable amount and controlled application of NO can specifically reduce pulmonary arterial hypertension and improve oxygenation. At present, NO inhalation therapy is widely applied to respiratory medicine of newborn infants, and is also applicable to clinical medicine fields of critical care, cardio-thoracic intravascular surgery, respiratory medicine, anesthesia department and the like.
The existing method for generating nitric oxide through electrolyte electrolysis can not only coat the surface of an electrode to reduce the contact between the electrode and the electrolyte if the residual nitric oxide in the electrolyte is not removed, but also can seriously damage the electrode and the electrolyte, and when the device is used for the second time, the concentration of the released nitric oxide can not meet the use requirement, and byproducts such as nitrogen dioxide can also be generated, and the residual nitric oxide is difficult to remove only by purging, so that the problems of long waiting time, impure nitric oxide gas and the like when the device is used for the next time by a client are caused, and the reusability of the nitric oxide electrolysis device is poor.
CN109568745A discloses a medical nitric oxide gas supply system and method, including a nitric oxide gas generation subsystem and a gas concentration monitoring subsystem, the two subsystems are communicated with an air suction pipeline, the nitric oxide gas generation subsystem includes an air suction pump, a first flow monitoring device, a nitric oxide generator and a first electromagnetic valve which are arranged in sequence along the air flow direction. The invention can monitor and adjust the concentration of the nitric oxide actually inhaled by a user in real time to enable the concentration to reach a set target range. But it does not allow for rapid removal of residual nitric oxide, thereby affecting the next use.
CN203469171U discloses a nitric oxide inhalation therapy apparatus, comprising: nitric oxide steel cylinder, flow controller, breathing machine, collection pipe, methemoglobin concentration and NO2A concentration detector and an NO concentration detector, wherein the collecting tube is respectively connected with NO2The concentration detector is connected with the NO concentration detector, and the concentration of the methemoglobin is connected with a probe connected with the finger of the patient. The therapeutic machine monitors NO and NO in the respiratory tract in real time2The concentration of the hemoglobin is monitored in real time, so that the concentration of NO inhaled by a patient is ensured to be within a safe range, and the generation of NO toxicity is prevented. However, the continuous working performance of the therapy apparatus cannot be guaranteed because the nitric oxide steel cylinder is used as a gas source.
CN110124169A discloses a nitric oxide therapeutic instrument, including the casing, be fixed with NO control assembly, detection module, power supply module and control module in the casing, NO control assembly includes mass flow controller, and detection module includes air pump, detection sensor and three way solenoid valve, and detection sensor includes NO detection sensor and NO detection sensor2The detection sensor and the three-way electromagnetic valve outlet pipeline are divided into a detection gas circuit and a set gas circuit, the detection gas circuit is connected with the breather pump and the detection sensor, the set gas circuit is communicated with the atmosphere, and the detection sensor, the mass flow controller and the three-way electromagnetic valve are all electrically connected with the control module. The invention is provided with a setting air passage specially for setting the zero return of the sensor, so that the detection of the therapeutic apparatus is more accurate. Although the invention uses a gas path to empty the residual nitric oxide, the invention has a problem of long waiting time and poor reusability.
The existing nitric oxide treatment devices have the problem of poor reusability, namely, the residual nitric oxide after each use cannot be quickly removed, so that the problem that how to ensure the stable concentration of the nitric oxide generated by the nitric oxide treatment devices and have the characteristic of good reusability effect is urgently needed to be solved at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an electrolysis device for realizing the separation of accumulated NO and a using method thereof.
In a first aspect, the invention provides an electrolysis device for realizing the separation of accumulated NO, which comprises an electrolytic cell, wherein the electrolytic cell comprises a shell, electrolyte is injected into the shell, at least one pair of electrodes immersed in the electrolyte is arranged in the shell, and the electrolysis device also comprises a gas-liquid separator circularly connected with the electrolytic cell; and the electrolyte enters the gas-liquid separator, the separated gas is discharged from the gas-liquid separator, and the separated liquid flows back into the shell.
According to the invention, through the gas-liquid separator, after the release of nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is discharged, so that the concentration of the nitric oxide in the electrolytic cell is rapidly reduced, the harm of the residual nitric oxide to the electrode and the electrolyte is avoided, the electrolyte and the electrode can be used for many times, the stable concentration of the nitric oxide is generated, the repeatability and consistency of the electrolytic cell are realized, in addition, the separation and discharge of the nitric oxide can meet the actual application scene in time, and the waiting time of customers is short.
In a preferred embodiment of the present invention, the electrolytic cell includes a circulation line, and the gas in the electrolytic cell circulates through the circulation line.
The invention ensures the circulation of nitrogen and nitric oxide generated by electrolysis in the electrolytic cell by arranging the circulating pipeline, thereby ensuring the concentration of the nitric oxide.
Preferably, the shell is connected with an air inlet pipeline.
Preferably, the outlet end of the circulation line is connected to the air intake line.
Preferably, the inlet end of the circulation line is located above the liquid level in the housing.
Preferably, a circulating pump is arranged on the circulating pipeline.
As a preferred technical scheme of the invention, the shell is circularly connected with the gas-liquid separator through a first pipeline and a second pipeline, and the first pipeline extends into the position below the liquid level in the shell; the second pipeline is connected above the liquid level in the shell.
Preferably, the first pipeline and the second pipeline are both connected to a switching valve at the same time, and the switching valve is used for switching the working state and the temporary stop state of the gas-liquid separator; the working state comprises: electrolyte flows through the switching valve through the first pipeline, enters the gas-liquid separator to be subjected to gas-liquid separation, and flows back into the electrolytic cell through the second pipeline; the critical standstill state comprises: and gas in the electrolytic cell flows through the switching valve through the second pipeline, enters the gas-liquid separator, purges residual electrolyte, and flows back into the electrolytic cell through the first pipeline.
The gas-liquid separator changes the running state including the working state and the temporary stopping state through the switching valve, and under the working state, the electrolyte in the electrolytic cell enters the gas-liquid separator, so that the residual nitric oxide in the electrolytic cell is removed, and the repeatability and consistency of the concentration of the nitric oxide generated in the next use are ensured; in the state of approaching to stop, through gaseous anti-blowing, blow remaining electrolyte in the vapour and liquid separator back to the electrolytic bath, avoid electrolyte to gather in the vapour and liquid separator, influence vapour and liquid separator's life.
Preferably, the gas-liquid separator is connected with an air pump, and the air pump injects carrier gas into the gas-liquid separator for bringing the separated gas out of the gas-liquid separator.
The gas-liquid separator is connected with the air pump, and the gas separated by the gas-liquid separator is taken out of the gas-liquid separator, so that the accumulation of nitric oxide gas in the gas-liquid separator is avoided, and the separation effect of the gas-liquid separator can be improved. The separated nitric oxide can be treated uniformly, and the disordered diffusion of nitric oxide gas is avoided, so that the environmental pollution is avoided.
Preferably, the area of the separation membrane in the gas-liquid separator is 1000-50000 cm2For example, an area of 1000cm2、5000cm2、10000cm2、15000cm2、20000cm2、25000cm2、30000cm2、35000cm2、40000cm2、45000cm2Or 50000cm2。
In a preferred embodiment of the present invention, the first line is provided with a filter, and the filter is located between the electrolytic cell and the switching valve.
The invention is provided with the filter to prevent impurities in the electrolyte from entering the gas-liquid separator, damaging membrane components in the gas-liquid separator and influencing the separation effect of the gas-liquid separator.
Preferably, an electromagnetic valve is arranged on the first pipeline between the filter and the switching valve.
According to the invention, the electromagnetic valve is arranged on the first pipeline, and the electromagnetic valve prevents the electrolyte in the electrolytic cell from being sucked back into the gas-liquid separator because the electrolytic cell has certain pressure during operation.
Preferably, a gas-liquid dual-purpose pump is arranged on the first pipeline, and the gas-liquid dual-purpose pump is positioned between the switching valve and the gas-liquid separator.
The gas-liquid dual-purpose pump provided by the invention can pump electrolyte and gas, and meets different functions of electrolyte delivery and gas delivery when the gas-liquid separator is in a working state and a temporary stop state.
In a preferred embodiment of the present invention, a purging element is provided in the electrolytic cell, and the purging element is used for purging the electrode.
Preferably, the purge is located below the electrode.
Preferably, the blowing member comprises an open box body, and the box body is filled with air stones.
Preferably, the opening direction of the box body faces to the corresponding electrode.
According to the invention, the purging piece is arranged below the electrode, and the purging gas generated by the purging piece is used for blowing away the nitric oxide gas generated on the surface of the electrode, so that the generated gas is prevented from being accumulated on the surface of the electrode and in the electrolyte, and in addition, the purging effect on the surface of the electrode is increased by adopting the air stones, and the electrolysis efficiency of the electrolytic cell is improved.
Preferably, the outlet end of the air inlet pipeline is connected into a purging piece.
Preferably, the material of the electrode comprises one or a combination of at least two of gold, platinum, carbon, stainless steel, titanium, ruthenium or boron-doped diamond.
Preferably, the electrodes are made of the same or different materials.
Preferably, the electrode is in the shape of a mesh and/or a plate.
As a preferable technical scheme of the invention, the gas outlet end of the electrolytic cell is provided with a desalting fog film, and the desalting fog film is used for filtering salt-containing liquid drops.
The invention utilizes the desalting fog film to filter impurities such as salt-containing micro liquid drops and the like in the released nitric oxide, thereby preventing the impurities from entering the breathing machine and influencing the breathing machine and human body.
Preferably, the material of the salt and fog removing membrane comprises any one or a combination of at least two of polytetrafluoroethylene, polyvinylidene fluoride, polyether sulfone, mixed cellulose ester, organic nylon 6 or organic nylon 66.
Preferably, the average pore diameter of the salt fog removing film is 0.1-2 μm, for example, the average pore diameter is 0.1 μm, 0.2 μm, 0.4 μm, 0.6 μm, 0.8 μm, 1.0 μm, 1.2 μm, 1.4 μm, 1.6 μm, 1.8 μm or 2.0 μm.
In a second aspect, the present invention provides a method of using an electrolysis apparatus for cumulative NO separation as described in the first aspect, the method comprising:
the electrolyte is electrolyzed to generate nitric oxide, and the nitric oxide is released after the concentration of the nitric oxide meets the requirement; after the release of nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is separated by using a gas-liquid separator.
The invention utilizes the gas-liquid separator to separate and remove the residual nitric oxide in the electrolytic cell, thereby effectively removing the influence of the residual nitric oxide on the electrolyte and the electrode and ensuring the stability and consistency of the concentration of the nitric oxide generated by each electrolysis.
As a preferred technical solution of the present invention, the using method specifically comprises:
nitrogen in the electrolytic cell and the nitric oxide enter the air inlet pipeline through the circulating pipeline, are sprayed out through the blowing piece and blow away gas generated on the electrode, and the nitric oxide is released after the concentration of the nitric oxide meets the requirement;
(II) after the release of nitric oxide is stopped, the gas-liquid separator enters a working state, the electrolyte flows through the switching valve through the first pipeline and enters the gas-liquid separator for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline, the carrier gas brings the gas separated by the gas-liquid separator out of the gas-liquid separator, and the electrolyte flows back into the electrolytic cell;
(III) after the working state is finished, switching the switching valve, enabling the gas-liquid separator to enter a temporary stop state, enabling gas in the electrolytic cell to flow through the switching valve through the second pipeline, enabling the gas to enter the gas-liquid separator, purging the residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline.
In a preferred embodiment of the present invention, in step (i), the volume concentration of nitrogen is greater than or equal to 99.0%, for example, the volume concentration of nitrogen is 99.00%, 99.10%, 99.20%, 99.30%, 99.40%, 99.50%, 99.60%, 99.70%, 99.80%, 99.90%, or 99.990%.
Preferably, the current of the electrolysis is ≦ 600mA, for example, the current is 1mA, 60mA, 120mA, 180mA, 240mA, 300mA, 360mA, 420mA, 480mA, 540mA or 600 mA.
Preferably, the concentration of released nitric oxide is less than or equal to 10000ppm, e.g. the concentration of nitric oxide is 1ppm, 10ppm, 100ppm, 1000ppm, 2000ppm, 3000ppm, 4000ppm, 5000ppm, 6000ppm, 7000ppm, 8000ppm, 9000ppm or 10000 ppm.
Preferably, the temperature of the electrolyte is 10 to 40 ℃, for example, 10 ℃, 12 ℃, 14 ℃, 16 ℃, 18 ℃, 20 ℃, 22 ℃, 24 ℃, 26 ℃, 28 ℃, 30 ℃, 32 ℃, 34 ℃, 36 ℃, 38 ℃ or 40 ℃.
As a preferable technical scheme of the invention, in the step (II), the time of the working state is less than or equal to 20min, for example, the time is 1min, 2min, 4min, 6min, 8min, 10min, 12min, 14min, 16min, 18min or 20 min.
Preferably, in step (ii), the carrier gas is air.
Preferably, in step (II), the carrier gas has a flow rate of 0.25-5L/min, for example, a flow rate of 0.25L/min, 0.5L/min, 1.0L/min, 1.5L/min, 2.0L/min, 2.5L/min, 3.0L/min, 3.5L/min, 4.0L/min, 4.5L/min or 5.0L/min.
Preferably, in step (III), the time of the temporary stop state is 0.5-2 min, for example, 0.5min, 0.6min, 0.7min, 0.8min, 0.9min, 1.0min, 1.1min, 1.2min, 1.3min, 1.4min, 1.5min, 1.6min, 1.7min, 1.8min, 1.9min or 2.0 min.
Preferably, in steps (II) and (III), the flow rate of the gas-liquid dual-purpose pump is 0.5-10L/min, for example, 0.5L/min, 1.0L/min, 2.0L/min, 3.0L/min, 4.0L/min, 5.0L/min, 6.0L/min, 7.0L/min, 8.0L/min, 9.0L/min or 10.0L/min.
The numerical ranges set forth herein include not only the recited values but also any values between the recited numerical ranges not enumerated herein, and are not intended to be exhaustive or otherwise clear from the intended disclosure of the invention in view of brevity and clarity.
Compared with the prior art, the invention has the beneficial effects that:
the invention circularly connects the electrolytic cell and the gas-liquid separator, after the release of the nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is separated and discharged by the gas-liquid separator, so that the concentration of the nitric oxide in the electrolytic cell is rapidly reduced, the harm of the residual nitric oxide to the electrode and the electrolyte is avoided, the electrolyte and the electrode can be used for multiple times, the stable concentration of the nitric oxide is generated, the repeatability and the consistency of the electrolytic cell are realized, in addition, the separation and the discharge of the nitric oxide can meet the actual application scene in time, and the waiting time of customers is short.
Drawings
FIG. 1 is a schematic diagram of an electrolytic device for cumulative NO separation provided in examples 1, 2, 3, 4 and 5 of the present invention.
Wherein, 1-an air inlet pipeline; 2-a circulation pipeline; 3-a first electrode; 4-a second electrode; 5-a shell; 6-circulating pump; 7-purging; 8, an air pump; 9-gas-liquid separator; 10-gas-liquid dual-purpose pump; 11-a switching valve; 12-a filter; 13-a first conduit; 14-a second conduit; 15-desalting fog film, 16-electromagnetic valve.
Detailed Description
It is to be understood that in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate a number of the indicated technical features. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
It should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
It should be understood by those skilled in the art that the present invention necessarily includes necessary piping, conventional valves and general pump equipment for achieving the complete process, but the above contents do not belong to the main inventive points of the present invention, and those skilled in the art can select the layout of the additional equipment based on the process flow and the equipment structure, and the present invention is not particularly limited to this.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In one embodiment, the invention provides an electrolysis device for realizing the separation of accumulated NO, which comprises an electrolysis cell, wherein the electrolysis cell comprises a shell 5, the shell 5 is filled with electrolyte and is provided with an electrode immersed in the electrolyte; the electrolysis device further comprises a gas-liquid separator 9 circularly connected with the electrolytic cell, electrolyte enters the gas-liquid separator 9, the separated gas is discharged out of the gas-liquid separator 9, the separated liquid flows back into the shell 5, wherein the area of a separation membrane in the gas-liquid separator 9 is 1000-50000 cm2。
According to the invention, through the gas-liquid separator 9, after the release of nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is discharged, so that the concentration of the nitric oxide in the electrolytic cell is rapidly reduced, the harm of the residual nitric oxide to the electrode and the electrolyte is avoided, the electrolyte and the electrode can be ensured to be used for multiple times, the stable concentration of the nitric oxide is generated, the repeatability and consistency of the electrolytic cell are realized, in addition, the separation and discharge of the nitric oxide can meet the actual application scene in time, and the waiting time of customers is short.
The electrolytic cell comprises a circulating pipeline 2 and an air inlet pipeline 1, a circulating pump 6 is arranged on the circulating pipeline 2, gas in the electrolytic cell flows in a circulating mode through the circulating pipeline 2, the outlet end of the circulating pipeline 2 is connected into the air inlet pipeline 1, and the inlet end of the circulating pipeline 2 is located above the liquid level in the shell 5. By arranging the circulating pipeline 2, nitrogen and nitric oxide generated by electrolysis circulate in the electrolytic cell, thereby ensuring the concentration of nitric oxide.
The shell 5 and the gas-liquid separator 9 are circularly connected through a first pipeline 13 and a second pipeline 14, the first pipeline 13 extends into the shell 5 below the liquid level, and the second pipeline 14 is connected into the shell 5 above the liquid level.
The first pipeline 13 and the second pipeline 14 are both connected to the switching valve 11 at the same time, and the switching valve 11 is used for switching the working state and the temporary stop state of the gas-liquid separator 9; wherein, operating condition includes: the electrolyte flows through the switching valve 11 through a first pipeline 13, enters a gas-liquid separator 9 for gas-liquid separation, and flows back into the electrolytic cell through a second pipeline 14; the critical stop state comprises: the gas in the electrolytic cell flows through the switching valve 11 via the second line 14, enters the gas-liquid separator 9, purges the remaining electrolyte, and the electrolyte flows back into the electrolytic cell via the first line 13. The first pipeline 13 is provided with a filter 12 positioned between the electrolytic cell and the switching valve 11, and the filter 12 is arranged to prevent impurities in the electrolyte from entering the gas-liquid separator 9, damage membrane components in the gas-liquid separator 9 and influence the separation effect of the gas-liquid separator 9; an electromagnetic valve 16 is provided between the filter 12 and the switching valve 11, and the electromagnetic valve 16 prevents the electrolyte in the electrolytic cell from being sucked back into the gas-liquid separator 9. The first pipeline 13 is provided with a gas-liquid dual-purpose pump 10 positioned between the switching valve 11 and the gas-liquid separator 9, and the gas-liquid dual-purpose pump 10 can pump both electrolyte and gas, so that different functions of electrolyte delivery and gas delivery can be met when the gas-liquid separator 9 is switched between a working state and an imminent stop state.
The gas-liquid separator 9 changes the running state including the working state and the temporary stopping state through the switching valve 11, and under the working state, the electrolyte in the electrolytic cell enters the gas-liquid separator 9, so that the residual nitric oxide in the electrolytic cell is removed, and the repeatability and consistency of the concentration of the nitric oxide generated in the next use are ensured; in the state of temporary stop, residual electrolyte in the gas-liquid separator 9 is blown back into the electrolytic cell through gas reverse blowing, so that the electrolyte is prevented from being accumulated in the gas-liquid separator 9, and the service life of the gas-liquid separator 9 is prevented from being influenced.
The gas-liquid separator 9 is connected with an air pump 8, and carrier gas is injected into the gas-liquid separator 9 and used for bringing the separated gas out of the gas-liquid separator 9. According to the invention, the air pump 8 is connected, and the gas separated by the gas-liquid separator 9 is taken out of the gas-liquid separator 9, so that the accumulation of nitric oxide gas in the gas-liquid separator 9 is avoided, the separation effect of the gas-liquid separator 9 can also be improved, the separated nitric oxide can be treated uniformly, and the disordered diffusion of the nitric oxide gas is avoided, and the environmental pollution is avoided.
The electrolytic cell is internally provided with a purging piece 7, the outlet end of the air inlet pipeline 1 is connected with the purging piece 7, the purging piece 7 is used for purging the electrode and is positioned below the electrode, the purging piece 7 comprises an open box body, bubble stones are filled in the box body, and the opening direction of the box body faces to the corresponding electrode; the material of the electrode comprises one or the combination of at least two of gold, platinum, carbon, stainless steel, titanium, ruthenium or boron-doped diamond, the material of the electrode is the same or different, and the shape of the electrode comprises a net shape and/or a plate shape.
According to the invention, the purging piece 7 is arranged below the electrode, and the purging gas generated by the purging piece 7 is used for blowing away the gas generated on the surface of the electrode, so that the generated gas is prevented from being accumulated on the surface of the electrode and in the electrolyte, and in addition, the purging effect on the surface of the electrode is increased by adopting the air stones, and the electrolysis efficiency of the electrolytic cell is further improved.
The air outlet end of the electrolytic cell is provided with a desalination fog membrane 15 for filtering salt-containing micro droplets, the material comprises one or a combination of at least two of polytetrafluoroethylene, polyvinylidene fluoride, polyether sulfone, mixed cellulose ester, organic nylon 6 or organic nylon 66, and the average pore diameter is 0.1-2 mu m.
In another embodiment, the invention provides a use method of the electrolysis device for realizing the separation of accumulated NO, which specifically comprises the following steps:
under the condition that constant current is less than or equal to 600mA, the temperature of electrolyte is 10-40 ℃, nitrogen-containing compounds in the electrolyte are electrolyzed to generate nitric oxide, nitrogen with the volume concentration of more than or equal to 99.0% is introduced into the electrolyte through an air inlet pipeline 1, an electrode is swept, the nitrogen and the nitric oxide in an electrolytic cell enter the air inlet pipeline 1 through a circulating pipeline 2, the nitrogen and the nitric oxide are sprayed out through a sweeping piece 7 and are blown away gas generated on the electrode, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is less than or equal to 10000 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state time is less than or equal to 20min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by air carrier gas with the flow rate of 0.25-5L/min, and the electrolyte flows back into the electrolytic cell;
and (III) after the working state is finished, switching the switching valve 11, enabling the gas-liquid separator 9 to enter a temporary stop state, wherein the temporary stop state time is 0.5-2 min, enabling gas in the electrolytic cell to flow through the switching valve 11 through the second pipeline 14, enabling the gas-liquid separator 9 to enter the gas-liquid separator, purging residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline 13, wherein the flow rate of the gas-liquid dual-purpose pump is 0.5-10L/min.
Example 1
The present embodiment provides an electrolysis apparatus for realizing cumulative NO separation, as shown in fig. 1, based on an electrolysis apparatus for realizing cumulative NO separation described in an embodiment, wherein the electrodes include a first electrode 3 and a second electrode 4, the material of the first electrode 3 includes gold, the material of the second electrode 4 includes platinum, and the first electrode 3 and the second electrode 4 are both in a plate shape; the desalting membrane 15 is made of polytetrafluoroethylene with an average pore diameter of 0.1 μm and a separation membrane area of 1000cm in the gas-liquid separator 92。
The embodiment also provides a use method of the electrolysis device for realizing the separation of the accumulated NO, which specifically comprises the following steps:
under the condition of constant current 400mA, the temperature of an electrolyte is 25 ℃, nitrogen-containing compounds in the electrolytic electrolyte generate nitric oxide, nitrogen with the volume concentration of 99.0% is introduced into the electrolyte through an air inlet pipeline 1, the first electrode 3 and the second electrode 4 are swept to generate nitric oxide, the nitrogen and the nitric oxide in the electrolytic cell enter the air inlet pipeline 1 through a circulating pipeline 2, are sprayed out through a sweeping part 7 and blow away gas generated on the first electrode 3 and the second electrode 4, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is 6500 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state time is less than or equal to 20min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by air carrier gas with the flow rate of 0.25L/min, and the electrolyte flows back into the electrolytic cell;
and (III) after the working state is finished, switching the switching valve 11, enabling the gas-liquid separator 9 to enter a temporary stop state, wherein the temporary stop state time is 1min, enabling gas in the electrolytic cell to flow through the switching valve 11 through the second pipeline 14, enabling the gas-liquid separator 9 to enter the gas-liquid separator, purging residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline 13, wherein the flow rate of the gas-liquid dual-purpose pump is 5L/min.
Example 2
The embodiment provides an electrolysis device for realizing cumulative NO separation, as shown in FIG. 1, based on an electrolysis device for realizing cumulative NO separation described in a specific embodiment, wherein the electrodes comprise a first electrode 3 and a second electrode 4, the material of the first electrode 3 comprises carbon, the material of the second electrode 4 comprises stainless steel, the first electrode 3 is in a plate shape, and the second electrode 4 is in a net shape; the material of the desalting fog film 15 comprises polyvinylidene fluoride, the average pore diameter is 0.5 mu m, and the area of the separation film in the gas-liquid separator 9 is 12500cm2。
The embodiment also provides a use method of the electrolysis device for realizing the separation of the accumulated NO, which specifically comprises the following steps:
under the condition of constant current 600mA, the temperature of electrolyte is 20 ℃, nitrogen-containing compounds in the electrolyte are electrolyzed to generate nitric oxide, nitrogen with the volume concentration of 99.6% is introduced into the electrolyte through an air inlet pipeline 1 to blow a first electrode 3 and a second electrode 4 and generate nitric oxide, the nitrogen and the nitric oxide in the electrolyte enter the air inlet pipeline 1 through a circulating pipeline 2, are sprayed out through a blowing piece 7 and blow away gas generated on the first electrode 3 and the second electrode 4, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is 10000 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state lasts for 17min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by 0.3L/min of air carrier gas, and the electrolyte flows back into the electrolytic cell;
(III) after the working state is finished, the switching valve 11 is switched, the gas-liquid separator 9 enters a temporary stop state, the temporary stop state time is 1.2min, gas in the electrolytic cell flows through the switching valve 11 through the second pipeline 14 and enters the gas-liquid separator 9, residual electrolyte is purged, the electrolyte flows back into the electrolytic cell through the first pipeline 13, and the flow rate of the gas-liquid dual-purpose pump is 0.1L/min.
Example 3
The embodiment provides an electrolysis device for realizing cumulative NO separation, as shown in FIG. 1, based on the electrolysis device for realizing cumulative NO separation described in one specific embodiment, wherein the electrodes comprise a first electrode 3 and a second electrode 4, the material of the first electrode 3 comprises titanium, the material of the second electrode 4 comprises carbon, and the first electrode 3 and the second electrode 4 are both plate-shaped; the desalting fog membrane 15 is made of polyether sulfone and has an average pore size of 1 μm and a separation membrane area of 25000cm in the gas-liquid separator 92。
The embodiment also provides a use method of the electrolysis device for realizing the separation of the accumulated NO, which specifically comprises the following steps:
under the condition of constant current 300mA, the temperature of electrolyte is 10 ℃, nitrogen-containing compounds in the electrolytic electrolyte generate nitric oxide, nitrogen with the volume concentration of 99.7% is introduced into the electrolyte through an air inlet pipeline 1, a first electrode 3 and a second electrode 4 are swept to generate nitric oxide, the nitrogen and the nitric oxide in the electrolytic cell enter the air inlet pipeline 1 through a circulating pipeline 2, the nitrogen and the nitric oxide are sprayed out through a sweeping piece 7 and blow away gas generated on the first electrode 3 and the second electrode 4, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is 3400 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state time is 12min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by 0.35L/min of air carrier gas, and the electrolyte flows back into the electrolytic cell;
and (III) after the working state is finished, switching the switching valve 11, enabling the gas-liquid separator 9 to enter a temporary stop state, wherein the temporary stop state time is 0.9min, enabling gas in the electrolytic cell to flow through the switching valve 11 through the second pipeline 14, enabling the gas-liquid separator 9 to enter the gas-liquid separator 9, purging residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline 13, wherein the flow rate of the gas-liquid dual-purpose pump is 2.5L/min.
Example 4
The embodiment provides an electrolysis device for realizing cumulative NO separation, and as shown in FIG. 1, based on the electrolysis device for realizing cumulative NO separation described in a specific embodiment, the electrodes include a first electrode 3 and a second electrode 4, the material of the first electrode 3 includes gold and platinum, the mass ratio of gold to platinum is 1:1, the material of the second electrode 4 includes boron-doped diamond, and the first electrode 3 and the second electrode 4 are both in a mesh shape; the material of the desalting fog membrane 15 comprises polytetrafluoroethylene and polyethersulfone, the mass ratio of the polytetrafluoroethylene to the polyethersulfone is 1:1, the average pore diameter is 1.5 mu m, and the area of a separation membrane in the gas-liquid separator 9 is 37500cm2。
The embodiment also provides a use method of the electrolysis device for realizing the separation of the accumulated NO, which specifically comprises the following steps:
under the condition of constant electricity of 100mA, the temperature of electrolyte is 40 ℃, nitrogen-containing compounds in the electrolytic electrolyte generate nitric oxide, nitrogen with the volume concentration of 99.99% is introduced into the electrolyte through an air inlet pipeline 1, a first electrode 3 and a second electrode 4 are swept to generate nitric oxide, the nitrogen and the nitric oxide in the electrolytic cell enter the air inlet pipeline 1 through a circulating pipeline 2, the nitrogen and the nitric oxide are sprayed out through a sweeping piece 7 and blow away gas generated on the first electrode 3 and the second electrode 4, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is 800 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state time is 5min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by 0.4L/min of air carrier gas, and the electrolyte flows back into the electrolytic cell;
and (III) after the working state is finished, switching the switching valve 11, enabling the gas-liquid separator 9 to enter a temporary stop state, wherein the temporary stop state time is 1.5min, enabling gas in the electrolytic cell to flow through the switching valve 11 through the second pipeline 14, enabling the gas-liquid separator 9 to enter the gas-liquid separator 9, purging residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline 13, wherein the flow rate of the gas-liquid dual-purpose pump is 7.5L/min.
Example 5
The present embodiment provides an electrolysis apparatus for separating accumulated NO, as shown in fig. 1, based on an embodiment of the electrolysis apparatus for separating accumulated NO, wherein the electrodes comprise a first electrode 3 and a second electrode 4, the first electrode 3 comprises ruthenium, the second electrode 4 comprises stainless steel, the first electrode 3 is mesh-shaped, and the second electrode 4 is plate-shaped; the material of the desalting fog membrane 15 comprises polytetrafluoroethylene, polyvinylidene fluoride and polyether sulfone, the mass ratio of the polytetrafluoroethylene to the polyvinylidene fluoride to the polyether sulfone is 1:1:1, the average pore diameter is 2 mu m, and the area of a separation membrane in the gas-liquid separator 9 is 50000cm2。
The embodiment also provides a use method of the electrolysis device for realizing the separation of the accumulated NO, which specifically comprises the following steps:
under the condition of constant current of 200mA, the temperature of electrolyte is 32 ℃, nitrogen-containing compounds in the electrolytic electrolyte generate nitric oxide, nitrogen with the volume concentration of 99.8% is introduced into the electrolyte through an air inlet pipeline 1, a first electrode 3 and a second electrode 4 are swept to generate nitric oxide, the nitrogen and the nitric oxide in the electrolytic cell enter the air inlet pipeline 1 through a circulating pipeline 2, the nitrogen and the nitric oxide are sprayed out through a sweeping piece 7 and blow away gas generated on the first electrode 3 and the second electrode 4, the concentration of the nitric oxide is released after meeting the requirement, and the concentration of the nitric oxide is 2500 ppm;
(II) after the release of nitric oxide is stopped, the gas-liquid separator 9 enters a working state, the working state time is 20min, the electrolyte flows through the switching valve 11 through the first pipeline 13 and enters the gas-liquid separator 9 for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline 14, the gas separated by the gas-liquid separator 9 is carried out of the gas-liquid separator 9 by 0.5L/min of air carrier gas, and the electrolyte flows back into the electrolytic cell;
and (III) after the working state is finished, switching the switching valve 11, enabling the gas-liquid separator 9 to enter a temporary stop state, wherein the temporary stop state time is 2min, enabling gas in the electrolytic cell to flow through the switching valve 11 through the second pipeline 14, enabling the gas-liquid separator 9 to enter the gas-liquid separator, purging residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline 13, wherein the flow rate of the gas-liquid dual-purpose pump is 10L/min.
The invention is circularly connected with the gas-liquid separator 9 through the electrolytic cell, after the release of the nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is separated and discharged by the gas-liquid separator 9, and when the device is used next time, the harm of the residual nitric oxide to the electrode and the electrolyte is avoided, so that the concentration of the nitric oxide is ensured to be stable.
The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.
Claims (10)
1. The electrolytic device for realizing the separation of the accumulated NO is characterized by comprising an electrolytic cell, wherein the electrolytic cell comprises a shell, electrolyte is injected into the shell, at least one pair of electrodes immersed in the electrolyte is arranged in the shell, and the electrolytic device also comprises a gas-liquid separator circularly connected with the electrolytic cell; and the electrolyte enters the gas-liquid separator, the separated gas is discharged from the gas-liquid separator, and the separated liquid flows back into the shell.
2. The electrolyzer unit for the separation of cumulative NO as recited in claim 1 wherein the electrolytic cell includes a circulation line through which the gas in the electrolytic cell circulates;
preferably, the shell is connected with an air inlet pipeline;
preferably, the outlet end of the circulating pipeline is connected into the air inlet pipeline;
preferably, the inlet end of the circulation line is located above the liquid level in the housing;
preferably, a circulation pump is arranged on the circulation pipeline.
3. The electrolysis device for realizing the separation of accumulated NO according to claim 1 or 2, characterized in that the shell is circularly connected with the gas-liquid separator through a first pipeline and a second pipeline, and the first pipeline extends into the shell below the liquid level; the second pipeline is connected above the liquid level in the shell;
preferably, the first pipeline and the second pipeline are both connected to a switching valve at the same time, and the switching valve is used for switching the working state and the temporary stop state of the gas-liquid separator; the working state comprises: electrolyte flows through a switching valve through the first pipeline and enters the gas-liquid separator for gas-liquid separation, and the electrolyte flows back into the electrolytic cell through the second pipeline; the critical standstill state includes: gas in the electrolytic cell flows through the switching valve through the second pipeline, enters the gas-liquid separator, purges residual electrolyte, and the electrolyte flows back into the electrolytic cell through the first pipeline;
preferably, the gas-liquid separator is connected with an air pump, and the air pump injects carrier gas into the gas-liquid separator for bringing the separated gas out of the gas-liquid separator;
preferably, the area of the separation membrane in the gas-liquid separator is 1000-50000 cm2。
4. The electrolysis device according to claim 3, wherein the first conduit is provided with a filter, the filter being located between the electrolysis cell and the switching valve;
preferably, an electromagnetic valve is arranged on the first pipeline between the filter and the switching valve;
preferably, a gas-liquid dual-purpose pump is arranged on the first pipeline, and the gas-liquid dual-purpose pump is positioned between the switching valve and the gas-liquid separator.
5. An electrolysis device for realizing the separation of accumulated NO according to any one of claims 1 to 4, wherein a purging element is arranged in the electrolysis cell and is used for purging the electrode;
preferably, the purge is located below the electrode;
preferably, the blowing member comprises an open box body, and the box body is filled with air stones;
preferably, the opening direction of the box body faces to the corresponding electrode;
preferably, the outlet end of the air inlet pipeline is connected with a purging piece;
preferably, the material of the electrode comprises one or a combination of at least two of gold, platinum, carbon, stainless steel, titanium, ruthenium and boron-doped diamond;
preferably, the materials of the electrodes are the same or different;
preferably, the shape of the electrode comprises a mesh and/or a plate.
6. The electrolysis device for realizing the separation of accumulated NO according to any one of claims 1 to 5, wherein the gas outlet end of the electrolysis cell is provided with a demisting membrane, and the demisting membrane is used for filtering salt-containing liquid drops;
preferably, the material of the salt fog removing film comprises any one of or a combination of at least two of polytetrafluoroethylene, polyvinylidene fluoride, polyether sulfone, mixed cellulose ester, organic nylon 6 and organic nylon 66;
preferably, the average pore diameter of the salt fog removing film is 0.1-2 μm.
7. Use of an electrolysis device for cumulative NO separation according to any of claims 1 to 6, characterized in that the use comprises:
the electrolyte is electrolyzed to generate nitric oxide, and the nitric oxide is released after the concentration of the nitric oxide meets the requirement; after the release of nitric oxide is stopped, the residual nitric oxide in the electrolytic cell is separated by a gas-liquid separator.
8. The use method according to claim 7, wherein the use method specifically comprises:
electrolyzing a nitrogen-containing compound in an electrolyte under constant current to generate nitric oxide, introducing nitrogen into the electrolyte through an air inlet pipeline, purging gas on an electrode, introducing the nitrogen and the nitric oxide in an electrolytic cell into the air inlet pipeline through a circulating pipeline, spraying the nitrogen and the nitric oxide through a purging piece, and blowing away the gas generated on the electrode, wherein the concentration of the nitric oxide meets the requirement and then releasing the nitric oxide;
(II) after the release of nitric oxide is stopped, the gas-liquid separator enters a working state, the electrolyte flows through the switching valve through the first pipeline and enters the gas-liquid separator for gas-liquid separation, the electrolyte flows back into the electrolytic cell through the second pipeline, the carrier gas brings the gas separated by the gas-liquid separator out of the gas-liquid separator, and the electrolyte flows back into the electrolytic cell;
(III) after the working state is finished, switching the switching valve, enabling the gas-liquid separator to enter a temporary stop state, enabling gas in the electrolytic cell to flow through the switching valve through the second pipeline, enabling the gas to enter the gas-liquid separator, purging the residual electrolyte, and enabling the electrolyte to flow back into the electrolytic cell through the first pipeline.
9. The use method as claimed in claim 8, wherein in the step (I), the volume concentration of the nitrogen is more than or equal to 99.0%;
preferably, the current of the electrolysis is less than or equal to 600 mA;
preferably, the concentration of the released nitric oxide is less than or equal to 10000 ppm;
preferably, the temperature of the electrolyte is 10-40 ℃.
10. The use method according to claim 8 or 9, wherein in step (II), the time of the working state is less than or equal to 20 min;
preferably, in step (ii), the carrier gas is air;
preferably, in the step (II), the flow rate of the carrier gas is 0.25-5L/min;
preferably, in the step (III), the time of the temporary stop state is 0.5-2 min;
preferably, in the steps (II) and (III), the flow rate of the gas-liquid dual-purpose pump is 0.5-10L/min.
Priority Applications (13)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011502839.7A CN114645282A (en) | 2020-12-18 | 2020-12-18 | Electrolysis device for realizing accumulated NO separation and use method thereof |
| US18/043,900 US20230313399A1 (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| AU2021401099A AU2021401099A1 (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| PCT/CN2021/139117 WO2022127902A1 (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| CN202311033027.6A CN117568825A (en) | 2020-12-18 | 2021-12-17 | System and method for generating nitric oxide |
| CN202311032508.5A CN117802515A (en) | 2020-12-18 | 2021-12-17 | System for generating nitric oxide |
| KR1020237024202A KR20230121851A (en) | 2020-12-18 | 2021-12-17 | Devices, systems and methods for producing nitrogen monoxide |
| EP21844628.4A EP4244406A1 (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| CN202311031041.2A CN117070962A (en) | 2020-12-18 | 2021-12-17 | Apparatus and method for generating nitric oxide |
| JP2023537262A JP2023554469A (en) | 2020-12-18 | 2021-12-17 | Equipment, systems and methods for producing nitric oxide |
| CA3201125A CA3201125A1 (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| IL303679A IL303679A (en) | 2020-12-18 | 2021-12-17 | Apparatuses, systems, and methods for generating nitric oxide |
| CN202180027930.4A CN115398036B (en) | 2020-12-18 | 2021-12-17 | Devices, systems, and methods for generating nitric oxide |
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| CN202011502839.7A CN114645282A (en) | 2020-12-18 | 2020-12-18 | Electrolysis device for realizing accumulated NO separation and use method thereof |
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