CN222990232U - Water electrolysis system for accelerating cold start - Google Patents
Water electrolysis system for accelerating cold start Download PDFInfo
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- CN222990232U CN222990232U CN202421907324.9U CN202421907324U CN222990232U CN 222990232 U CN222990232 U CN 222990232U CN 202421907324 U CN202421907324 U CN 202421907324U CN 222990232 U CN222990232 U CN 222990232U
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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
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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
本实用新型提出一种加快冷启动的电解水系统，包括电解槽，电解槽液体输出端固定连接有第一三通阀，第一三通阀输出端分别固定连接有电加热器和换热器，电加热器和换热器输出端固定连接有第二三通阀，第二三通阀输出端固定连接有循环泵，循环泵输出端固定连接有过滤器，过滤器的输出端与电解槽的输出端连通。本实用新型所述用于碱性电解水系统解决了其电流密度低导致碱液升温速率慢冷启动时间长的问题，通过增加冷启动旁路，采用电加热方式利用可再生电能快速加热碱液到反应温度，加快冷启动时间，提高其系统性能减少低纯度氢气产生。
The utility model proposes a water electrolysis system for accelerating cold start, comprising an electrolytic cell, a first three-way valve fixedly connected to the liquid output end of the electrolytic cell, an electric heater and a heat exchanger fixedly connected to the output ends of the first three-way valve, the output ends of the electric heater and the heat exchanger fixedly connected to the second three-way valve, a circulation pump fixedly connected to the output end of the second three-way valve, a filter fixedly connected to the output end of the circulation pump, and the output end of the filter connected to the output end of the electrolytic cell. The alkaline water electrolysis system described in the utility model solves the problem of slow alkali solution heating rate and long cold start time due to low current density, by adding a cold start bypass, using electric heating to quickly heat the alkali solution to the reaction temperature using renewable electric energy, accelerating the cold start time, improving the system performance and reducing the generation of low-purity hydrogen.
Description
Technical Field
The utility model relates to the technical field of electrolytic water systems, in particular to an electrolytic water system for accelerating cold start.
Background
Hydrogen has the advantages of high energy density, long storage time, small loss and the like, and is an indispensable component in the modern chemical industry. It is widely used in oil refining and in the production of ammonia, methanol and steel, but currently more than 96% of hydrogen comes from the thermochemical reforming of traditional fossil resources, which is incompatible with carbon abatement requirements. The green low-carbon development is a necessary choice, and the renewable energy transformation and the improvement of the energy utilization efficiency are necessary routes. The hydrogen production by water electrolysis is a new technology for realizing the real green hydrogen production by using renewable energy sources. Water electrolysis technologies mainly include Alkaline Water Electrolysis (AWE), proton exchange membrane water electrolysis (PEM) and Solid Oxide Electrolysis Cells (SOEC). The AWE occupies the largest market share and has the advantages of low investment cost, durability, mature technology and the like. The cold start-up time for kw-megawatt scale AWE systems is typically 1-3 hours, which longer start-up times make them more problematic when combined with renewable energy sources. Meanwhile, the hydrogen generated in the process has to be discharged into the atmosphere due to low purity, so that energy waste is caused, the greenhouse effect is increased, the temperature is a main factor influencing the starting time, the AWE current density is low, the heating rate of alkali liquor is very slow, the heating rate of the alkali liquor can be accelerated, the reaction temperature can be quickly reached, and the cold starting time can be greatly shortened.
Thus, in view of the above problems, we propose an electrolytic water system that accelerates cold start.
Disclosure of utility model
The utility model aims to provide an electrolytic water system for accelerating cold start so as to solve the problems of the background technology.
In order to achieve the aim, the utility model provides the technical scheme that the water electrolysis system for accelerating cold start comprises an electrolytic tank, wherein the liquid output end of the electrolytic tank is fixedly connected with a first three-way valve, the output end of the first three-way valve is respectively and fixedly connected with an electric heater and a heat exchanger, the output ends of the electric heater and the heat exchanger are fixedly connected with a second three-way valve, the output end of the second three-way valve is fixedly connected with a circulating pump, the output end of the circulating pump is fixedly connected with a filter, and the output end of the filter is communicated with the output end of the electrolytic tank.
As a further description of the utility model, the power input end of the electrolytic tank is electrically connected with a rectifier, the power input end of the rectifier is electrically connected with a second transformer, and the power input end of the second transformer is electrically connected with new energy electricity.
As a further description of the utility model, the power input end of the electric heater is electrically connected with the first transformer, and the power input end of the second transformer is connected with the power output end of the new energy source.
As a further description of the utility model, the heat exchange connection port of the heat exchanger is fixedly provided with a refrigerator.
As a further description of the utility model, an oxygen gas-liquid separator and a hydrogen gas-liquid separator are also arranged between the first three-way valve and the heat exchanger, wherein the pipelines of the oxygen gas-liquid separator and the hydrogen gas-liquid separator are connected in series.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, the electric heater is designed on the electrolyzed water system for accelerating cold start, when the electrolyzed water system is used, by adding the cold start bypass, the renewable electric energy is used for rapidly heating the alkali liquor to the reaction temperature in an electric heating mode, the cold start time is accelerated, the system performance is improved, and the low-purity hydrogen is reduced.
Drawings
FIG. 1 is a schematic flow chart of the system of the present utility model.
In the figure, 1, an electrolytic tank; 2, a first three-way valve, 3, an electric heater, 4, a heat exchanger, 5, a second three-way valve, 6, a circulating pump, 7, a filter, 8, a rectifier, 9, a second transformer, 10, new energy electricity, 11, a first transformer, 12, an oxygen gas-liquid separator, 13, a hydrogen gas-liquid separator, 14 and a refrigerator.
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, the utility model provides a technical scheme that an electrolytic water system for accelerating cold start comprises an electrolytic tank 1, wherein the liquid output end of the electrolytic tank 1 is fixedly connected with a first three-way valve 2, the output end of the first three-way valve 2 is respectively and fixedly connected with an electric heater 3 and a heat exchanger 4, the output ends of the electric heater 3 and the heat exchanger 4 are fixedly connected with a second three-way valve 5, the output end of the second three-way valve 5 is fixedly connected with a circulating pump 6, the output end of the circulating pump 6 is fixedly connected with a filter 7, and the output end of the filter 7 is communicated with the output end of the electrolytic tank 1.
In the embodiment, the power input end of the electrolytic tank 1 is electrically connected with a rectifier 8, the power input end of the rectifier 8 is electrically connected with a second transformer 9, and the power input end of the second transformer 9 is electrically connected with new energy power 10.
In specific use, the new energy electricity 10 provides direct current for the electrolytic tank 1 after passing through the second transformer 9 and the rectifier 8.
In the embodiment, the power input end of the electric heater 3 is electrically connected with a first transformer 11, and the power input end of the second transformer 9 is connected with the power output end of the new energy power 10.
When the electric heater is particularly used, the new energy electricity 10 provides alternating current for the electric heater 3 after passing through the first transformer 11.
In the embodiment, a refrigerating machine 14 is fixedly arranged at a heat exchange connection port of the heat exchanger 4.
In specific use, the refrigerator 14 provides a cold source for the heat exchanger 4 to exchange heat and cool.
In the embodiment, an oxygen gas-liquid separator 12 and a hydrogen gas-liquid separator 13 are also arranged between the first three-way valve 2 and the heat exchanger 4, wherein the pipelines of the oxygen gas-liquid separator 12 and the hydrogen gas-liquid separator 13 are connected in series.
In specific use, the oxygen gas-liquid separator 12 and the hydrogen gas-liquid separator 13 can collect oxygen and hydrogen generated by the electrolysis of alkali liquor in the electrolytic tank 1.
When the electrolyzer 1 is in use, new energy electricity 10, a second transformer 9 and a rectifier 8 provide electric energy for the electrolyzer 1, the electrolyzer 1 reacts to generate oxygen and hydrogen, the oxygen gas-liquid separator 12, the hydrogen gas-liquid separator 13, the heat exchanger 4, the second three-way valve 5, the circulating pump 6 and the filter 7 sequentially pass through the first three-way valve 2, the oxygen gas-liquid separator 12, the alkali liquor is circulated back into the electrolyzer 1, when the electrolyzer 1 is started, the new energy electricity 10 provides electric energy for the electric heater 3 through the first transformer 11, the electrolyzer 1 does not react, the new energy electricity 10 does not provide electric energy for the electrolyzer 1, the electrolyzer 1 does not generate hydrogen and oxygen, the second transformer 9, the rectifier 8, the oxygen gas-liquid separator 12, the hydrogen gas-liquid separator 13, the heat exchanger 4 and the refrigerator 14 do not work, alkali liquor in the electrolyzer 1 is circulated back into the electrolyzer 1 through the first three-way valve 2, the electric heater 3, the second three-way valve 5, the circulating pump 6 and the filter 7, and after the alkali liquor is heated to a reaction temperature, the electric heater 3 is started, and the electrolyzer 1 normally runs in a loop.
Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art may modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some technical features thereof, and any modifications, equivalent substitutions, improvements and the like within the spirit and principles of the present utility model should be included in the scope of the present utility model.
Claims (5)
1. An electrolytic water system for accelerating cold start comprises an electrolytic tank (1) and is characterized in that a first three-way valve (2) is fixedly connected to the liquid output end of the electrolytic tank (1), an electric heater (3) and a heat exchanger (4) are respectively and fixedly connected to the output end of the first three-way valve (2), a second three-way valve (5) is fixedly connected to the output ends of the electric heater (3) and the heat exchanger (4), a circulating pump (6) is fixedly connected to the output end of the second three-way valve (5), a filter (7) is fixedly connected to the output end of the circulating pump (6), and the output end of the filter (7) is communicated with the output end of the electrolytic tank (1).
2. The cold start accelerating water electrolysis system according to claim 1, wherein the power input end of the electrolytic tank (1) is electrically connected with a rectifier (8), the power input end of the rectifier (8) is electrically connected with a second transformer (9), and the power input end of the second transformer (9) is electrically connected with new energy electricity (10).
3. The cold start accelerating water electrolysis system according to claim 2, wherein the power input end of the electric heater (3) is electrically connected with a first transformer (11), and the power input end of the second transformer (9) is connected with the power output end of the new energy source electricity (10).
4. The cold start accelerating electrolytic water system as set forth in claim 1, wherein the heat exchanger (4) heat exchange connection port is fixedly provided with a refrigerator (14).
5. The cold start accelerating electrolytic water system as set forth in claim 4, wherein an oxygen gas-liquid separator (12) and a hydrogen gas-liquid separator (13) are further installed between the first three-way valve (2) and the heat exchanger (4), wherein the pipelines of the oxygen gas-liquid separator (12) and the hydrogen gas-liquid separator (13) are connected in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421907324.9U CN222990232U (en) | 2024-08-08 | 2024-08-08 | Water electrolysis system for accelerating cold start |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202421907324.9U CN222990232U (en) | 2024-08-08 | 2024-08-08 | Water electrolysis system for accelerating cold start |
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| CN222990232U true CN222990232U (en) | 2025-06-17 |
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| CN202421907324.9U Active CN222990232U (en) | 2024-08-08 | 2024-08-08 | Water electrolysis system for accelerating cold start |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120400869A (en) * | 2025-07-07 | 2025-08-01 | 山东国创燃料电池技术创新中心有限公司 | A PEM water electrolysis hydrogen production system and control method |
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2024
- 2024-08-08 CN CN202421907324.9U patent/CN222990232U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN120400869A (en) * | 2025-07-07 | 2025-08-01 | 山东国创燃料电池技术创新中心有限公司 | A PEM water electrolysis hydrogen production system and control method |
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