CN221117632U - Diaphragm-free micro-channel water electrolysis system - Google Patents
Diaphragm-free micro-channel water electrolysis system Download PDFInfo
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- CN221117632U CN221117632U CN202322727278.6U CN202322727278U CN221117632U CN 221117632 U CN221117632 U CN 221117632U CN 202322727278 U CN202322727278 U CN 202322727278U CN 221117632 U CN221117632 U CN 221117632U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 33
- 239000003792 electrolyte Substances 0.000 claims abstract description 22
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 53
- 239000001257 hydrogen Substances 0.000 claims description 52
- 229910052739 hydrogen Inorganic materials 0.000 claims description 52
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 36
- 239000001301 oxygen Substances 0.000 claims description 36
- 229910052760 oxygen Inorganic materials 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 4
- 238000009826 distribution Methods 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 description 11
- 230000003197 catalytic effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000010410 layer Substances 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 2
- 239000010425 asbestos Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002052 molecular layer Substances 0.000 description 2
- 229920000620 organic polymer Polymers 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910052895 riebeckite Inorganic materials 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000036952 cancer formation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model belongs to the technical field of electrolyzed water, and particularly relates to a diaphragm-free micro-channel electrolyzed water system, which solves the problems of uneven distribution of electrolyte during electrolysis and higher application cost in the prior art.
Description
Technical Field
The utility model relates to the technical field of electrolyzed water, in particular to a diaphragm-free micro-channel electrolyzed water system.
Background
The hydrogen energy is a clean energy source with high heat value and no pollution to the environment because combustion products are water only, the large-scale application of the hydrogen energy is of great significance to solving the energy crisis and the environmental problem, the electrolytic water hydrogen production has the advantages of high product purity, wide regional adaptability and the like, but is limited by the defects of high electric power cost, high price of an electrolytic diaphragm, short service life, harm to human bodies and the like, the electrolytic water hydrogen production is not applied in a large scale, the current small-scale commercial electrolytic water hydrogen production equipment generally adopts a bipolar filter-pressing type electrolytic tank, the overpotential is reduced by using high-temperature alkaline electrolyte so as to reduce the energy consumption, the hydrogen and the oxygen generated in the electrolysis are separated by using the diaphragm, the electrolytic tank is required to have the function of ensuring the ion passing in the electrolyte besides the function of separating the gas generated in the electrolysis process, the development progress of the diaphragm is slow by separating gas and ensuring ions through the two contradictory functional requirements, the diaphragm which is currently mainstream is an asbestos diaphragm, however, the stability of asbestos is poor and the risk of cancerogenesis exists, the organic polymer diaphragm which is used as a substitute has the advantages of good air tightness, however, the ohmic potential drop is large, the energy consumption is increased, the ohmic potential drop of the inorganic diaphragm is small, the air tightness is poor, the air tightness is required to be complicated structural design to realize the same air tightness as that of the organic polymer diaphragm, the cost is high, the stability is poor, the defect that the electric cost of hydrogen production by water electrolysis is high is overcome slowly with the strong development of new energy represented by wind power and photovoltaic, meanwhile, the unstable energy source large-scale installation with fluctuation of output power such as wind power and photovoltaic along with weather and time change fluctuation is realized by wind power, wind power is realized by wind power, the electric energy generated by the photovoltaics is used for preparing hydrogen energy for storing the electrolyzed water, so that the large-scale application prospect of hydrogen production by the electrolyzed water is expanded, however, the defects of high price, short service life and the like of the electrolysis diaphragm are not expected to be solved in a short time, and based on the hope, the technical scheme provides the diaphragm-free micro-channel electrolyzed water system and the method.
The authorized bulletin number in the prior art is: the seawater hydrogen production electrode comprises an electrode matrix, a catalytic layer, a conductive molecular layer and a sulfonic group-rich protective layer; the catalytic layer component is one or more of metal and oxide thereof with the function of catalyzing electrolysis to produce hydrogen and/or oxygen; the catalytic layers are continuously distributed on one surface of the electrode matrix; the conductive molecular layer is positioned between the catalytic layer and the sulfonic group-rich protective layer to form a three-dimensional interface, the electrode can repel chloride ions in the reaction process, so that the direct contact between the chloride ions and electrode body metal is prevented, the service life of the electrode and the catalytic performance of hydrogen production can be improved, the electrode is applied to an electrolytic hydrogen production unit for producing hydrogen by taking seawater as a raw material, the service life of the material and the performance stability can be improved in the process of directly producing hydrogen by seawater, and the electrolytic hydrogen production cost is reduced.
Disclosure of utility model
The utility model aims to provide a diaphragm-free micro-channel water electrolysis system, which solves the problems of uneven distribution of electrolyte and higher application cost in electrolysis in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the diaphragm-free micro-channel water electrolysis system comprises a raw water tank and a micro-channel electrolytic tank inlet, wherein a circulating pump is arranged on one side of the raw water tank, and an alkali liquid tank is arranged above the circulating pump;
The hydrogen flash tank is arranged above the oxygen flash tank.
Preferably, a hydrogen comprehensive tank is arranged above the hydrogen flash tank.
Preferably, an oxygen comprehensive tank is arranged above the oxygen flash tank.
Preferably, a cathode is arranged at one side of the inlet of the micro-channel electrolytic cell.
Preferably, an anode is mounted below the cathode.
Preferably, the cathode and the anode are internally provided with an electrolyte.
Preferably, a hydrogen-rich channel is installed at one side of the cathode.
Preferably, an oxygen enrichment channel is arranged on one side of the anode.
Preferably, hydrogen bubbles are arranged in the hydrogen-rich channel.
Preferably, oxygen bubbles are arranged in the oxygen-enriched channel.
Compared with the prior art, the utility model has the following beneficial effects:
1. According to the utility model, through the arrangement of structures such as the diaphragm-free micro-channel electrolytic tank and the like, through the structural optimization design of the electrolytic tank in the water electrolysis system, the electrolytic diaphragm which occupies great cost in the water electrolysis hydrogen production system is successfully omitted, the method is simple and convenient, the manufacturing cost is low, the inlets of the electrolytic tank are designed to be in dendritic distribution, the resistance from the electrolyte inlet to the outlet of each dendritic channel is basically the same, the distribution uniformity of the electrolyte during electrolysis is ensured, and the flowing state of the electrolyte between the cathode and the anode of the electrolytic tank is ensured to be laminar.
2. The utility model is characterized in that the electrolytic cell is limited by the electrolytic membrane through the arrangement of the structures such as the cathode and the anode, and can normally only work under a specific small range of pH, the electrolytic cell can work under various pH after the electrolytic membrane is not arranged, the application of the electrolytic cell under a wide pH range is realized, the ohmic potential drop between the anode and the cathode of the electrolytic cell is reduced, the ion mobility between the solution is improved, and the utility model has important significance for reducing the application cost of electrolytic water and popularizing the wide application of hydrogen energy.
Drawings
FIG. 1 is a schematic view of a membrane-free microchannel electrolytic cell of the utility model;
FIG. 2 is a schematic side view of a membrane-free microchannel electrolytic cell of the utility model;
FIG. 3 is a graph of electrolyte velocity field and gas balance in a diaphragm-free microchannel electrolytic cell of the utility model;
FIG. 4 is a diagram of a membrane-free microchannel electrolytic water system of the present utility model.
In the figure: 1. a raw water pool; 2. an alkali liquid pool; 3. a circulation pump; 4. a diaphragm-free micro-channel electrolytic tank; 5. a rectifier; 6. a hydrogen flash tank; 7. an oxygen flash tank; 8. a hydrogen comprehensive tank; 9. an oxygen comprehensive tank; 10. an inlet of the micro-channel electrolytic cell; 11. a cathode; 12. an anode; 13. an electrolyte; 14. a hydrogen-rich channel; 15. an oxygen-enriched channel; 16. hydrogen bubbles; 17. oxygen bubbles.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-3, a diaphragm-free micro-channel water electrolysis system comprises a raw water tank 1 and a micro-channel electrolysis tank inlet 10, wherein a circulating pump 3 is installed on one side of the raw water tank 1, an alkali liquid tank 2 is installed above the circulating pump 3, a diaphragm-free micro-channel electrolysis tank 4 is installed on one side of the circulating pump 3, a rectifier 5 is installed above the diaphragm-free micro-channel electrolysis tank 4, an oxygen flash tank 7 is installed on one side of the diaphragm-free micro-channel electrolysis tank 4, and a hydrogen flash tank 6 is installed above the oxygen flash tank 7.
Referring to fig. 1-3, a hydrogen comprehensive tank 8 is installed above the hydrogen flash tank 6, an oxygen comprehensive tank 9 is installed above the oxygen flash tank 7, a cathode 11 is installed at one side of the inlet 10 of the micro-channel electrolyzer, an anode 12 is installed below the cathode 11, and electrolyte 13 is arranged inside the cathode 11 and the anode 12.
Referring to fig. 1-3, a hydrogen-rich channel 14 is installed on one side of a cathode 11, an oxygen-rich channel 15 is installed on one side of an anode 12, hydrogen bubbles 16 are disposed in the hydrogen-rich channel 14, and oxygen bubbles 17 are disposed in the oxygen-rich channel 15.
The specific implementation process of the utility model is as follows: the inlet of the diaphragm-free micro-channel electrolytic tank 4 is designed to be in multi-branch dendritic distribution, the outlet resistance of the electrolyte 13 from the inlet to each dendritic channel is basically the same, so that the distribution uniformity of the electrolyte 13 at the inlet of the electrolytic tank is ensured, the electrolyte 13 enters the diaphragm-free micro-channel electrolytic tank 4 at a certain speed under the control of the circulating pump 3 and then undergoes electrolytic reaction, the principle of the diaphragm-free micro-channel electrolytic tank 4 is that a cathode 11 (coated with a hydrogen generating catalyst) and an anode 12 (coated with an oxygen generating catalyst) are arranged in parallel, the interval between the cathode 11 and the anode 12 is 500-800 micrometers (hereinafter d represents the distance between the cathode 11 and the anode 12 of the electrolytic tank), the speed of the electrolyte 13 in the electrolytic tank is in a distribution trend that the closer to the electrode surface is shown, the hydrogen bubbles 16 and the oxygen bubbles 17 generated at the electrode surface migrate to the center of the electrolytic tank due to the hoop effect, and finally the electrolyte at the center of the electrolytic tank can form balance at the position about 0.3d from the electrode surface, under the hoop effect, the hydrogen generated at the cathode 11 and the anode 12 can form hydrogen gas and the oxygen generated at the two sides of the electrolytic tank, and the hydrogen bubbles can form a dynamic balance based on the dynamic purity, and the bubble purity can not be ensured;
further, the rear part of the diaphragm-free micro-channel electrolytic tank 4 is provided with a Y-shaped channel, one side is provided with a hydrogen-rich channel 14, one side is provided with an oxygen-rich channel 15, through the design of the Y-shaped channel, the further separation of hydrogen and oxygen is completed, the raw water tank 1 and the alkaline liquid tank 2 supply raw water and electrolyte to the circulating pump 3, the circulating pump 3 supplies electrolyte 13 to the diaphragm-free micro-channel electrolytic tank 4 which is supplied with direct current by the rectifier 5, part of the electrolyte 13 electrolyzed by the diaphragm-free micro-channel electrolytic tank 4 flows to the hydrogen flash tank 6 through the hydrogen-rich channel 14, part flows to the oxygen flash tank 7 through the oxygen-rich channel 15, the hydrogen and the oxygen contained in the electrolyte 13 are separated by utilizing the flash effect after the high-pressure liquid suddenly enters the low-pressure container, the separated hydrogen and the separated oxygen enter the hydrogen comprehensive tank 8 and the oxygen comprehensive tank 9 for further treatment and utilization respectively, and the separated electrolyte 13 returns to the circulating pump 3, and the recycling is realized after the replenishment of the raw water and the alkaline liquid.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a no diaphragm microchannel electrolysis water system, includes raw water pond (1) and microchannel electrolysis trough entry (10), its characterized in that: a circulating pump (3) is arranged on one side of the raw water tank (1), and an alkali liquid tank (2) is arranged above the circulating pump (3);
The utility model discloses a hydrogen flash tank, including circulating pump (3), no diaphragm micro-channel electrolysis trough (4) are installed to one side of circulating pump (3), rectifier (5) are installed to the top of no diaphragm micro-channel electrolysis trough (4), oxygen flash tank (7) are installed to one side of no diaphragm micro-channel electrolysis trough (4), hydrogen flash tank (6) are installed to the top of oxygen flash tank (7).
2. The diaphragm-free micro-channel water electrolysis system according to claim 1, wherein: a hydrogen comprehensive tank (8) is arranged above the hydrogen flash tank (6).
3. The diaphragm-free micro-channel water electrolysis system according to claim 2, wherein: an oxygen comprehensive tank (9) is arranged above the oxygen flash tank (7).
4. A diaphragm-free micro-channel water electrolysis system according to claim 3, wherein: a cathode (11) is arranged on one side of the inlet (10) of the micro-channel electrolytic cell.
5. The diaphragm-free micro-channel water electrolysis system according to claim 4, wherein: an anode (12) is arranged below the cathode (11).
6. The diaphragm-free micro-channel water electrolysis system according to claim 5, wherein: an electrolyte (13) is arranged inside the cathode (11) and the anode (12).
7. The diaphragm-free micro-channel water electrolysis system according to claim 6, wherein: a hydrogen-rich channel (14) is arranged on one side of the cathode (11).
8. The diaphragm-free micro-channel water electrolysis system according to claim 7, wherein: an oxygen-enriched channel (15) is arranged on one side of the anode (12).
9. The diaphragm-free micro-channel water electrolysis system according to claim 8, wherein: the hydrogen-rich channel (14) is internally provided with hydrogen bubbles (16).
10. The diaphragm-free micro-channel water electrolysis system according to claim 9, wherein: oxygen bubbles (17) are arranged in the oxygen-enriched channel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322727278.6U CN221117632U (en) | 2023-10-11 | 2023-10-11 | Diaphragm-free micro-channel water electrolysis system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322727278.6U CN221117632U (en) | 2023-10-11 | 2023-10-11 | Diaphragm-free micro-channel water electrolysis system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221117632U true CN221117632U (en) | 2024-06-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322727278.6U Active CN221117632U (en) | 2023-10-11 | 2023-10-11 | Diaphragm-free micro-channel water electrolysis system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221117632U (en) |
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2023
- 2023-10-11 CN CN202322727278.6U patent/CN221117632U/en active Active
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