CN115652351B - Asymmetric electrolytic water hydrogen production device - Google Patents
Asymmetric electrolytic water hydrogen production device Download PDFInfo
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- CN115652351B CN115652351B CN202211369478.2A CN202211369478A CN115652351B CN 115652351 B CN115652351 B CN 115652351B CN 202211369478 A CN202211369478 A CN 202211369478A CN 115652351 B CN115652351 B CN 115652351B
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 239000001257 hydrogen Substances 0.000 title claims abstract description 103
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 103
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 35
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 164
- 238000000926 separation method Methods 0.000 claims abstract description 106
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000001301 oxygen Substances 0.000 claims abstract description 68
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 68
- 239000003011 anion exchange membrane Substances 0.000 claims description 4
- 230000004888 barrier function Effects 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 13
- 238000005868 electrolysis reaction Methods 0.000 description 18
- 239000003513 alkali Substances 0.000 description 16
- 230000005465 channeling Effects 0.000 description 8
- 230000008859 change Effects 0.000 description 7
- 239000012528 membrane Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004880 explosion Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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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
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- 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
- C25B1/50—Processes
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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
- C25B15/02—Process control or regulation
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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
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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
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
-
- 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
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/60—Constructional parts of cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/133—Renewable energy sources, e.g. sunlight
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- Automation & Control Theory (AREA)
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Abstract
The gas-liquid separation structure of the electrolytic water hydrogen production device adopts an asymmetric structure, and mainly means that the structures of a hydrogen gas-liquid separation tank and an oxygen gas-liquid separation tank are asymmetric. Since the hydrogen yield is twice that of the oxygen, in order to keep the liquid levels of the two gas-liquid separation tanks balanced when the power is suddenly changed, the sectional area of the hydrogen gas-liquid separation tank is set to be twice that of the oxygen gas-liquid separation tank, so that the pressure of the gas entering the hydrogen gas-liquid separation tank and the oxygen gas-liquid separation tank is basically the same, and the liquid levels are basically balanced.
Description
Technical Field
The invention relates to the technical field of electrochemical hydrogen production, in particular to an asymmetric water electrolysis hydrogen production device.
Background
The development of hydrogen energy can fundamentally relieve the energy safety problem brought by a large amount of imported oil gas resources in China, can be used as a special attribute of an energy storage medium, can promote the rapid development of large-scale renewable energy sources, and is an important means for realizing the double-carbon target in China.
The alkaline water electrolysis hydrogen production technology is widely applied in China, has a history of decades of technology maturity and high commercialization degree, is the water electrolysis hydrogen production technology with the highest prospect, but also has the problems of low current density and high energy consumption, and has long cold start time, and particularly, the problem that the unstable power supply (wind power, photoelectricity and the like) directly produces hydrogen is not solved by the alkaline water electrolysis at present.
At present, the conventional commercial alkaline water electrolysis device mainly comprises a variable-pressure rectifier 1, a control system 2, an electrolytic tank 3, a hydrogen gas-liquid separation tank 4, an oxygen gas-liquid separation tank 5, an alkali liquor shielding pump 6 and a cooler 7, as shown in the schematic diagram of fig. 1. The alkali liquor is pushed by the alkali liquor shielding pump 6 to enter the cathode small chamber 8 and the anode small chamber 9 through the flow channel below the electrolytic tank 3, and hydrogen and oxygen are respectively generated under the action of current. The generated hydrogen and oxygen are respectively mixed with alkali liquor to form a gas-liquid mixture, and respectively enter the hydrogen gas-liquid separation tank 4 and the oxygen gas-liquid separation tank 5 through a hydrogen gas-liquid pipeline 10 and an oxygen gas-liquid pipeline 11. The lye after gas-liquid separation is converged by the pipelines 15 and 16, enters the cooler 7 by the pipeline 17, and then flows into the lye shielding pump 6.
The principle of alkaline electrolyzed water is that two water molecules are electrolyzed under the action of electric fields of a cathode and an anode of an electrolytic tank to generate two hydrogen molecules and one oxygen molecule. According to thermodynamic principles, the volume of hydrogen produced by the cathode is twice that of oxygen produced by the anode. In the working state of the electrolytic tank, the conventional commercial alkaline water electrolysis device generally has more gas volume than liquid volume, so that the change of the gas volume can directly cause the change of the liquid level in the gas-liquid separation tank. The hydrogen and oxygen gas-liquid separation tank levels of such conventional commercial alkaline water electrolysis devices can produce greater fluctuations, particularly in the event of sudden power changes. Imbalance in the levels of hydrogen and oxygen directly results in imbalance between the cathode side and anode side pressures in the electrolyzer. The separator commonly used in the current electrolytic cells is a porous membrane. The imbalance in pressure between the cathode side and the anode side of the electrolyzer causes hydrogen or oxygen to enter the anode side or the cathode side through the diaphragm, causing gas cross-over between the hydrogen or oxygen, and possibly explosion due to the mixture of the hydrogen and the oxygen. Although in the prior art it has been proposed for proton membrane electrolysers (PEM) to store hydrogen and oxygen obtained after gas-liquid separation in storage tanks of different volumes, in order to avoid rupture of the membrane. However, since the diffusion layers on both sides of the membrane of a PEM electrolyzer are dense materials, it is generally possible to withstand a pressure differential of several atmospheres, while the proton membrane itself is impermeable to gases. The membrane of the alkaline electrolytic cell is a porous membrane, and only a small pressure difference is needed to exist at two sides, and the pressure difference is usually smaller than 0.01 atmosphere, so that gas channeling can be caused, and the problem of gas channeling caused by small pressure imbalance in the alkaline electrolytic cell cannot be solved by the method.
Accordingly, there is a continuing need for safer electrolyzed water hydrogen production plants that reduce fluctuations in the liquid level of hydrogen and oxygen gas-liquid separation tanks.
Disclosure of Invention
The invention aims to solve the defects of liquid level fluctuation of a hydrogen and oxygen gas-liquid separation tank and unbalance of cathode side pressure and anode side pressure in an electrolytic tank in the water electrolysis hydrogen production device in the prior art. The invention discovers that the problem of gas channeling caused by unbalanced smaller pressure in an electrolytic tank is mainly caused by different liquid levels of gas-liquid separation structures at a cathode side and an anode side, thereby designing a novel electrolytic water hydrogen production device, adopting a novel gas-liquid separation structure, in the novel structure, the liquid level of a gas-liquid separation system can be kept balanced and stable in the process of suddenly changing power, and the balanced and stable liquid level can avoid hydrogen and oxygen channeling, so that the safety of the system is ensured.
The invention provides an asymmetric water electrolysis hydrogen production device which is used for producing hydrogen by alkaline water electrolysis or anion exchange membrane water electrolysis.
The invention has the following beneficial effects: the alkaline electrolytic tank has been produced and sold for more than 30 years, no asymmetric gas-liquid separation structure exists at present, and the asymmetric water-gas hydrogen production device can better maintain the liquid level balance of the gas-liquid separation tank by using the asymmetric gas-liquid separation structure, particularly when the power changes suddenly, the liquid level of the gas-liquid separation tank changes, but the change speeds of the hydrogen gas-liquid separation tank and the oxygen gas-liquid separation tank are the same, the liquid levels of the gas-liquid separation tanks at two sides keep the balanced state, the explosion hazard caused by the mutual channeling of hydrogen and oxygen is avoided, the safety of the system is ensured, and the asymmetric water-gas hydrogen production device has very important significance for the safety of large-scale renewable energy hydrogen production.
Drawings
FIG. 1 is a schematic view of a conventional commercial alkaline water electrolysis apparatus;
FIG. 2 is a schematic diagram of an asymmetric water electrolysis hydrogen plant according to an embodiment of the present invention;
fig. 3 is a schematic structural view of an asymmetric water electrolysis hydrogen plant according to another embodiment of the present invention.
Detailed Description
The present application is further described in detail below by way of the accompanying drawings and examples. The features and advantages of the present application will become more apparent from the description.
The word "exemplary" is used herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
In addition, the technical features described below in the different embodiments of the present application may be combined with each other as long as they do not collide with each other.
The design of the traditional commercial electrolytic tank is that the cathode side and the anode side are the same in structure, and the volumes and structures of the pipeline, the runner and the gas-liquid separation tank are basically the same. Although the liquid level balance of the hydrogen and oxygen gas-liquid separation tank (shown in figure 1) can be controlled under the condition of stable power operation by controlling the pneumatic valve, when the power is changed, particularly when the power change is relatively large, the liquid level on two sides of the hydrogen and oxygen gas-liquid separation tank can be severely fluctuated. There are two risks to fluctuation of the liquid level: firstly, the liquid level fluctuation can influence the gas pressure of the gas-liquid separation tank, and the pressure can be transmitted to the cathode small chamber 8 and the anode small chamber 9, so that hydrogen and oxygen can be mutually channeling through a diaphragm, and the current efficiency and the system safety of the electrolytic hydrogen production are influenced; second, if the liquid level fluctuates too much, hydrogen and oxygen will mix through the pipes 15 and 16, creating an explosion risk.
One of the main reasons for this fluctuation is that the hydrogen generation rate is twice that of oxygen, but the overall structure of the electrolytic cell of the alkaline water electrolysis hydrogen production device and the anion exchange membrane water electrolysis hydrogen production device is symmetrical. In this symmetrical structure, the flow rate of the hydrogen gas and liquid mixture from the electrolyzer is higher than that of the oxygen gas and liquid mixture, which is also the main cause of the drastic fluctuation of the gas-liquid separation level.
The invention discovers that in order to ensure that the electrolytic water hydrogen production device can effectively avoid the mutual channeling of hydrogen and oxygen in the power change process, an asymmetric gas-liquid separation system can be designed, and the liquid levels of the two gas-liquid separation tanks, namely the hydrogen gas-liquid separation tank and the oxygen gas-liquid separation tank, are kept balanced and maintained in a safe height range in the power change process. The asymmetric design can reduce the cost and improve the system efficiency, and improve the stability and the safety of the device.
Based on the structure, the liquid level inside the gas-liquid separation structure can be kept balanced and stable in the power change process, and the mutual channeling of hydrogen and oxygen can be avoided due to the balanced and stable liquid level.
According to one embodiment of the invention, an asymmetric electrolytic water hydrogen production device is provided, which comprises an electrolytic tank, a hydrogen gas-liquid separation tank and an oxygen gas-liquid separation tank, wherein an inlet of the hydrogen gas-liquid separation tank is communicated with a cathode cell of the electrolytic tank through a pipeline, an inlet of the oxygen gas-liquid separation tank is communicated with an anode cell of the electrolytic tank through a pipeline, and the cross section area of the hydrogen gas-liquid separation tank is twice that of the oxygen gas-liquid separation tank. The asymmetric electrolytic water hydrogen production device not only can be used for alkaline electrolytic water hydrogen production, but also can be used for anion exchange membrane electrolytic water hydrogen production.
The gas-liquid separation structure adopts an asymmetric structure, and mainly means that the structures of the hydrogen gas-liquid separation tank and the oxygen gas-liquid separation tank are asymmetric. Since the hydrogen yield is twice that of the oxygen, in order to keep the liquid levels of the two gas-liquid separation tanks balanced when the power is suddenly changed, the sectional area of the hydrogen gas-liquid separation tank is set to be twice that of the oxygen gas-liquid separation tank, so that the pressure of the gas entering the hydrogen gas-liquid separation tank and the oxygen gas-liquid separation tank is basically the same, and the liquid levels are basically balanced.
According to a preferred embodiment of the present invention, the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank is a high-pressure vessel, and the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank are generally cylindrical vessels, either vertical or horizontal.
According to another embodiment of the present invention, the cross-sectional area of the pipe connected to the hydrogen gas-liquid separation tank may be twice the cross-sectional area of the pipe connected to the oxygen gas-liquid separation tank. Furthermore, the cathode cell cross-sectional area may be twice the anode cell cross-sectional area. The asymmetric structure of the invention is not limited to the gas-liquid separation tank, and can also comprise a pipeline connected with the gas-liquid separation tank, and a cathode small chamber and an anode small chamber of the electrolytic tank, so that the pressure and the liquid level balance in the two gas-liquid separation tanks can be ensured. More preferably, the volume of liquid entering the cathode cell of the cell may be twice the volume of liquid entering the anode cell of the cell.
According to another embodiment of the invention, the asymmetric electrolytic water hydrogen production device further comprises a shielding pump, wherein the inlet of the shielding pump is communicated with the hydrogen gas-liquid separation tank and/or the liquid outlet of the oxygen gas-liquid separation tank through a pipeline, and the outlet of the shielding pump is communicated with the liquid inlet of the cathode cell and/or the anode cell of the electrolytic tank through a pipeline. Preferably, two shielding pumps may be provided, respectively between the liquid outlet of the hydrogen gas-liquid separation tank and the liquid inlet of the cathode cell of the electrolyzer and between the liquid outlet of the oxygen gas-liquid separation tank and the liquid inlet of the anode cell of the electrolyzer.
According to another embodiment of the invention, the asymmetric electrolyzed water hydrogen production apparatus further comprises a cooler disposed between the hydrogen gas-liquid separation tank and/or the liquid outlet of the oxygen gas-liquid separation tank and the canned motor pump.
The present invention is further illustrated by the following examples, but the present invention is not limited thereto.
Example 1
As shown in fig. 2, the asymmetric water electrolysis hydrogen production device comprises a variable-pressure rectifier 1', a control system 2', an electrolytic tank 3', a hydrogen gas-liquid separation tank 4', an oxygen gas-liquid separation tank 5', an alkali liquor shielding pump 6' and a cooler 7'. The alkali liquor is pushed by the alkali liquor shielding pump 6 'to enter the cathode small chamber 8' and the anode small chamber 9 'through the flow channel below the electrolytic tank 3', and hydrogen and oxygen are respectively generated under the action of current. The generated gas-liquid mixture of hydrogen and oxygen respectively mixed with alkali liquor enters the hydrogen gas-liquid separation tank 4 'and the oxygen gas-liquid separation tank 5' through the hydrogen gas-liquid pipeline 10 'and the oxygen gas-liquid pipeline 11', respectively. The lye after gas-liquid separation is joined by pipes 15' and 16', enters the cooler 7' via pipe 17', and then flows into the lye shielding pump 6'. Wherein the cross-sectional area of the hydrogen gas-liquid separation tank 4 'is twice that of the oxygen gas-liquid separation tank 5', and the cross-sectional areas of the cathode small chamber 8', the hydrogen gas-liquid pipeline 10' and the pipeline 15 'are also twice that of the anode small chamber 9', the oxygen gas-liquid pipeline 11 'and the pipeline 16', respectively, so that the liquid levels of the two gas-liquid separation tanks can be kept balanced when the power is suddenly changed.
Example 2
The asymmetric design of the present invention is also suitable for a discrete cyclic gas-liquid separation structure. As shown in fig. 3, the asymmetric water electrolysis hydrogen production device comprises a variable pressure rectifier 1', a control system 2', an electrolytic tank 3', a hydrogen gas-liquid separation tank 4', an oxygen gas-liquid separation tank 5', alkali liquor shielding pumps 6a and 6b and coolers 7a and 7b. The alkali liquor after the hydrogen gas-liquid separation enters the cooler 7a through a pipeline 15', then is pushed into the cathode small chamber 8' of the electrolytic tank 3 'by the alkali liquor shielding pump 6a, the alkali liquor after the oxygen gas-liquid separation enters the cooler 7b through a pipeline 16', and then is pushed into the anode small chamber 9 'of the electrolytic tank 3' by the alkali liquor shielding pump 6 b. The alkaline solution entering the cathode sub-chamber 8' and the anode sub-chamber respectively generate hydrogen and oxygen under the action of current. The generated gas-liquid mixture of hydrogen and oxygen respectively mixed with alkali liquor enters the hydrogen gas-liquid separation tank 4 'and the oxygen gas-liquid separation tank 5' through the hydrogen gas-liquid pipeline 10 'and the oxygen gas-liquid pipeline 11', respectively. Wherein the cross-sectional area of the hydrogen gas-liquid separation tank 4 'is twice that of the oxygen gas-liquid separation tank 5', and the cross-sectional areas of the cathode small chamber 8', the hydrogen gas-liquid pipeline 10' and the pipeline 15 'are also twice that of the anode small chamber 9', the oxygen gas-liquid pipeline 11 'and the pipeline 16', respectively, so that the liquid levels of the two gas-liquid separation tanks are kept balanced when the power is suddenly changed.
The main characteristic of the separate circulation type gas-liquid separation structure is that the alkali liquor after gas-liquid separation enters the cathode small chamber 8' and the anode small chamber 9' of the electrolytic tank 3' through the pipelines 15' and 16', the coolers 7a and 7b and the alkali liquor shielding pumps 6a and 6b respectively. The lye is circulated independently on the hydrogen side and on the oxygen side, respectively, and only under certain conditions is mixing effected by means of the pneumatic valve 18' to maintain the concentration balance. For a separate circulation type gas-liquid separation structure, the liquid level balance of the gas-liquid separator of hydrogen and oxygen is also required to be kept, so that the imbalance of the pressures of the cathode sub-chamber 8 'and the anode sub-chamber 9' can be avoided.
The present application has been described in connection with the preferred embodiments, but these embodiments are merely exemplary and serve only as illustrations. On the basis of this, many alternatives and improvements can be made to the present application, which fall within the scope of protection of the present application.
Claims (8)
1. The asymmetric electrolytic water hydrogen production device is used for alkaline electrolytic water hydrogen production or anion exchange membrane electrolytic water hydrogen production and is characterized by comprising an electrolytic tank, a hydrogen gas-liquid separation tank and an oxygen gas-liquid separation tank, wherein an inlet of the hydrogen gas-liquid separation tank is communicated with a cathode small chamber of the electrolytic tank through a pipeline, an inlet of the oxygen gas-liquid separation tank is communicated with an anode small chamber of the electrolytic tank through a pipeline, and the sectional area of the hydrogen gas-liquid separation tank is twice that of the oxygen gas-liquid separation tank.
2. The apparatus of claim 1, wherein the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank is a high pressure vessel.
3. The apparatus according to claim 2, wherein the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank is a vertical or horizontal cylindrical vessel.
4. The apparatus of claim 1, wherein a cross-sectional area of a pipe connected to the hydrogen gas-liquid separation tank is twice a cross-sectional area of a pipe connected to the oxygen gas-liquid separation tank.
5. The apparatus of any one of claims 1 to 4, wherein the cathode cell cross-sectional area of the electrolyzer is twice the anode cell cross-sectional area of the electrolyzer.
6. The apparatus according to any one of claims 1 to 4, further comprising a shield pump, an inlet of the shield pump being in communication with a liquid outlet of the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank via a pipe, an outlet of the shield pump being in communication with a liquid inlet of a cathode cell and/or an anode cell of the electrolytic cell via a pipe.
7. The apparatus according to any one of claims 1 to 4, comprising two canned pumps respectively disposed between the liquid outlet of the hydrogen gas-liquid separation tank and the liquid inlet of the cathode cell of the electrolyzer and between the liquid outlet of the oxygen gas-liquid separation tank and the liquid inlet of the anode cell of the electrolyzer.
8. The apparatus of claim 6, further comprising a cooler disposed between the liquid outlet of the hydrogen gas-liquid separation tank and/or the oxygen gas-liquid separation tank and the barrier pump.
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| CN202211369478.2A CN115652351B (en) | 2022-11-03 | 2022-11-03 | Asymmetric electrolytic water hydrogen production device |
| PCT/CN2023/116254 WO2024093496A1 (en) | 2022-11-03 | 2023-08-31 | Asymmetric apparatus for producing hydrogen by water electrolysis |
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| CN202211369478.2A CN115652351B (en) | 2022-11-03 | 2022-11-03 | Asymmetric electrolytic water hydrogen production device |
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| CN115652351B (en) * | 2022-11-03 | 2023-06-20 | 嘉庚创新实验室 | Asymmetric electrolytic water hydrogen production device |
| CN117230463B (en) * | 2023-09-27 | 2024-07-19 | 北京化工大学 | Cold-start alkaline electrolysis hydrogen production device and hydrogen production method |
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| WO2018182005A1 (en) * | 2017-03-31 | 2018-10-04 | 旭化成株式会社 | Water electrolysis system, water electrolysis method, and method for producing hydrogen |
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| JP3611546B2 (en) * | 2001-07-31 | 2005-01-19 | 株式会社神鋼環境ソリューション | Gas generation system and gas-liquid separator |
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| ES2906235T3 (en) * | 2018-03-22 | 2022-04-13 | Hymeth Aps | High pressure electrolyser system comprising a pressure compensation system |
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| CN114134527B (en) * | 2021-12-15 | 2024-03-12 | 考克利尔竞立(苏州)氢能科技有限公司 | Water electrolysis hydrogen production device and method with multiple electrolytic tanks |
| CN114717577B (en) * | 2022-05-09 | 2024-01-26 | 中国华能集团清洁能源技术研究院有限公司 | Oxyhydrogen self-balancing device and method for electrolytic water hydrogen production system |
| CN115110118B (en) * | 2022-06-29 | 2023-10-03 | 中国华能集团清洁能源技术研究院有限公司 | Gas-liquid separator and electrolytic hydrogen production device |
| CN115652351B (en) * | 2022-11-03 | 2023-06-20 | 嘉庚创新实验室 | Asymmetric electrolytic water hydrogen production device |
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2022
- 2022-11-03 CN CN202211369478.2A patent/CN115652351B/en active Active
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2023
- 2023-08-31 WO PCT/CN2023/116254 patent/WO2024093496A1/en unknown
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018182005A1 (en) * | 2017-03-31 | 2018-10-04 | 旭化成株式会社 | Water electrolysis system, water electrolysis method, and method for producing hydrogen |
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| WO2024093496A1 (en) | 2024-05-10 |
| CN115652351A (en) | 2023-01-31 |
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Effective date of registration: 20240816 Address after: Unit 303, No. 106 Anling 2nd Road, Huli District, Xiamen City, Fujian Province 361000 Patentee after: Jiageng Laboratory Technology Industry Development (Xiamen) Co.,Ltd. Country or region after: China Address before: Room 410, yixuanguan, 422 Siming South Road, Siming District, Xiamen City, Fujian Province, 361000 Patentee before: Jiageng Innovation Laboratory Country or region before: China |