CN216891238U - Photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system - Google Patents
Photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system Download PDFInfo
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- CN216891238U CN216891238U CN202122619329.4U CN202122619329U CN216891238U CN 216891238 U CN216891238 U CN 216891238U CN 202122619329 U CN202122619329 U CN 202122619329U CN 216891238 U CN216891238 U CN 216891238U
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 43
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 43
- 239000001257 hydrogen Substances 0.000 title claims abstract description 43
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 29
- 238000005868 electrolysis reaction Methods 0.000 title claims abstract description 22
- 238000005338 heat storage Methods 0.000 title claims abstract description 13
- 238000010248 power generation Methods 0.000 claims abstract description 34
- 239000007788 liquid Substances 0.000 claims abstract description 18
- 238000000926 separation method Methods 0.000 claims abstract description 17
- 239000003792 electrolyte Substances 0.000 claims description 54
- 238000001816 cooling Methods 0.000 claims description 31
- 229920000642 polymer Polymers 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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
- 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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- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The application provides a photovoltaic, photothermal and heat storage combined water electrolysis hydrogen production system, which comprises an electrolytic cell, a gas-liquid separation device and a circulating pump which are sequentially connected end to end through pipelines, and further comprises a photovoltaic power generation device, wherein the photovoltaic power generation device is electrically connected with the electrolytic cell; a comprehensive energy system is created, the photovoltaic power generation efficiency is improved, and the low-quality photo-thermal utilization rate is improved.
Description
Technical Field
The application relates to the technical field of electrolytic hydrogen production, in particular to a photovoltaic, photo-thermal and heat storage combined electrolytic water hydrogen production system.
Background
The photovoltaic power generation is used as green clean energy which is encouraged by the state, the installation scale is continuously increased in recent years, but the photovoltaic power generation has the problems of randomness, volatility, stage power supply and the like, and the difficulty of photovoltaic hydrogen production is increased. Particularly, photovoltaic power generation has day and night intermittency which is difficult to avoid, power generation and hydrogen production can be realized only when illumination is sufficient in the daytime, and power generation and hydrogen production cannot be realized at night without illumination. The hydrogen production by water electrolysis is a heat release process, and redundant heat needs to be continuously removed by an electrolyte cooling device during the daytime power generation and hydrogen production; meanwhile, solar energy can not be completely converted into electric energy through photovoltaic power generation in daytime, and most of solar energy can not be collected. When hydrogen production is stopped at night, no heat is generated in the system, the temperature of the electrolyte is naturally cooled, and the conductivity of the electrolyte is reduced after the temperature of the electrolyte is reduced, so that the electrolytic cell needs to spend a long time for heating to the rated operation temperature when being restarted.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
Therefore, the application aims to provide a photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system, and the heat collection device is arranged and used for collecting cooling waste heat and photo-thermal of a solar photovoltaic plate and a photo-thermal device through a pipeline, so that the heat of the hydrogen production system is preserved at night, the continuity of the photovoltaic hydrogen production process is kept, and the comprehensive energy consumption of the hydrogen production process is reduced; a comprehensive energy system is created, the photovoltaic power generation efficiency is improved, and the low-quality photo-thermal utilization rate is improved.
In order to achieve the purpose, the photovoltaic, photo-thermal and heat-storage combined electrolyzed water hydrogen production system comprises an electrolytic bath, a gas-liquid separation device and a circulating pump which are sequentially connected end to end through pipelines, and further comprises a photovoltaic power generation device, the photovoltaic power generation device is electrically connected with the electrolytic bath, and the photovoltaic power generation device further comprises a photo-thermal device and a heat collection device which are sequentially connected end to end through pipelines, wherein a heat collection medium is arranged in the heat collection device, the heat collection medium flows through pipelines, the photovoltaic power generation device absorbs heat from the photo-thermal device, and the heat collection device is connected in parallel with the pipelines between the gas-liquid separation device and the circulating pump through first branch pipelines.
Furthermore, a first valve is arranged on a pipeline between the photovoltaic power generation device and the heat collection device, and a second valve is arranged on a pipeline between the photo-thermal device and the heat collection device.
Furthermore, a third valve is arranged on a first branch pipeline between the heat collection device and the gas-liquid separation device, and a fourth valve is arranged on a first branch pipeline between the heat collection device and the circulating pump.
Furthermore, a fifth valve is arranged on a pipeline between the gas-liquid separation device and the circulating pump, and the fifth valve is connected with the heat collection device in parallel.
Further, the photo-thermal device is a flat plate collector, a vacuum tube collector or a trough collector.
Further, the heat collecting device is a hot water tank.
Further, the electrolytic bath device further comprises an electrolyte cooling device, and the electrolyte cooling device is connected to a pipeline between the circulating pump and the electrolytic bath in parallel through a second branch pipeline.
Further, the electrolytic bath device also comprises a sixth valve, wherein the sixth valve is arranged on a pipeline between the circulating pump and the electrolytic bath, and the sixth valve and the electrolyte cooling device are arranged in parallel.
Further, the electrolytic cell also comprises a seventh valve and an eighth valve, wherein the seventh valve is arranged on a second branch pipeline between the electrolyte cooling device and the electrolytic cell, and the eighth valve is arranged on a second branch pipeline between the electrolyte cooling device and the circulating pump.
Further, the electrolytic cell is an alkaline electrolytic cell or a solid polymer electrolytic cell.
Additional aspects and advantages of the present application will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present application.
Drawings
The foregoing and/or additional aspects and advantages of the present application will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of a photovoltaic, photothermal, and heat storage combined hydrogen production system by electrolysis of water according to an embodiment of the present application.
Detailed Description
Reference will now be made in detail to embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application. On the contrary, the embodiments of the application include all changes, modifications and equivalents coming within the spirit and terms of the claims appended hereto.
Fig. 1 is a schematic structural diagram of a photovoltaic, photothermal, and heat storage combined hydrogen production system by electrolysis of water according to an embodiment of the present application.
Referring to fig. 1, the photovoltaic, photothermal and heat storage combined electrolyzed water hydrogen production system comprises an electrolytic cell 2, a gas-liquid separation device 3 and a circulating pump 4 which are sequentially connected end to end through pipelines, and further comprises a photovoltaic power generation device 1, wherein the photovoltaic power generation device 1 is electrically connected with the electrolytic cell 2, and further comprises a photothermal device 6 and a heat collection device 7 which are sequentially connected end to end with the photovoltaic power generation device 1 through pipelines, wherein a heat collection medium is arranged in the heat collection device 7, the heat collection medium flows through the photovoltaic power generation device 1 and the photothermal device 6 through pipelines to absorb heat, and the heat collection device 7 is connected in parallel on the pipeline between the gas-liquid separation device 3 and the circulating pump 4 through a first branch pipeline.
In the embodiment, a photovoltaic power generation device 1, an electrolytic bath 2, a gas-liquid separation device 3, an electrolyte circulating pump 4 and an electrolyte cooling device 5 form an electrolytic hydrogen production system; the photovoltaic power generation device 1, the photo-thermal device 6 and the heat collection device 7 form an auxiliary heating system, the auxiliary heating system and the electrolytic hydrogen production system are coupled with each other to collect and store the power generation waste heat of the photovoltaic power generation device and the solar heat, the hydrogen production system is insulated at night, the electrolyte is kept at a proper temperature in the daytime and at night, the continuity of the photovoltaic hydrogen production process is kept, and the comprehensive energy consumption of the hydrogen production process is reduced. An electrolyte is injected into the electrolytic cell, and optionally, the electrolyte is KOH alkaline solution or pure water.
In this application, photovoltaic power generation device 1 adopts liquid cooling, and through pipeline intercommunication light and heat device 6 and heat collection device 7, the light and heat device is used for collecting solar heat to improve the temperature of the thermal-arrest medium in the pipeline, thereby effectively keep warm to the hydrogen manufacturing system evening. The heat collecting device is connected with the gas-liquid separation device and the circulating pump through the first branch pipeline to feed in electrolyte, the electrolyte in the pipeline completes heat exchange with a heat collecting medium in the heat collecting device, heat preservation of the electrolyte at night is achieved, energy loss in the process of day and night switching of the operation state of the hydrogen production device is avoided, and the overall energy conversion efficiency of the photovoltaic hydrogen production process is improved. Preferably, the heat collecting medium can be water, and is low in cost and easy to obtain.
The solar heat collector is characterized in that a first valve 14 is arranged on a pipeline between the photovoltaic power generation device 1 and the heat collecting device 7, and a second valve 15 is arranged on a pipeline between the photo-thermal device 6 and the heat collecting device 7. The on-off control of the pipeline between the photovoltaic power generation device 1 and the heat collection device 7 and the pipeline between the photo-thermal device 6 and the heat collection device 7 can be realized by arranging the first valve 14 and the second valve 15, so that the flowing state of a heat collection medium can be conveniently controlled.
A third valve 12 is arranged on a first branch pipeline between the heat collecting device 7 and the gas-liquid separation device 3, and a fourth valve 13 is arranged on a first branch pipeline between the heat collecting device 7 and the circulating pump 4. The opening and closing control of the first branch pipeline can be realized by arranging the third valve 12 and the fourth valve 13, the flowing state of the electrolyte is convenient to control, whether the electrolyte flows through the heat collecting device for heat exchange is realized, and the operating efficiency of the hydrogen production system is improved.
And a fifth valve 11 is arranged on a pipeline between the gas-liquid separation device 3 and the circulating pump 4, and the fifth valve 11 is connected with the heat collection device 7 in parallel. Through setting up fifth valve 11, be in the in-process of keeping warm the heating to electrolyte at night, the fifth valve is closed, realizes that electrolyte flows through heat collection device completely and carries out the heat transfer, guarantees heat exchange efficiency.
The photo-thermal device 6 is a flat plate collector, a vacuum tube collector or a trough collector. The specific structure of the photothermal device can be selected according to specific application scenarios, which is not limited in this application.
The heat collecting device 7 is a hot water tank. The characteristic that water has larger specific heat capacity is utilized, so that heat storage is facilitated, and the heat preservation effect on the electrolyte at night is further ensured. In other embodiments, the hot water tank can be further provided with a pebble heap to further improve the heat storage capacity of the heat collection device. This is not limited by the present application.
The utility model provides a photovoltaic, light and heat, heat-retaining joint's brineelectrolysis hydrogen manufacturing system still includes electrolyte cooling device 5, electrolyte cooling device 5 through second branch pipeline parallel connection in on the pipeline between circulating pump 4 and electrolysis trough 2. Electrolyte cooling device 5 is used for cooling off electrolyte to the temperature that can not arouse the electrolysis trough in the electrolyte circulation gets into the electrolysis trough risees, and electrolyte cooling device 5 parallelly connected sets up on the pipeline between circulating pump 4 and the electrolysis trough 2, can the selectivity make the electrolyte in the pipeline whether pass through electrolyte cooling device, and the flexibility is high, when need not cooling to electrolyte, electrolyte cooling device closes, is favorable to improving electrolyte cooling device's life, electrolyte cooling device regards as the cold source with open or closed recirculating cooling water system.
The utility model provides a photovoltaic, light and heat, heat-retaining joint's brineelectrolysis hydrogen manufacturing system still includes sixth valve 8, sixth valve 8 set up in circulating pump 4 with on the pipeline between the electrolysis trough 2, sixth valve 8 with electrolyte cooling device 5 sets up in parallel. The sixth valve 8 is arranged to mainly control the opening and closing of the pipeline between the electrolytic tank 2 and the circulating pump 4, so as to control whether the electrolyte flows through the electrolyte cooling device.
The utility model provides a photovoltaic, light and heat, heat-retaining joint's electrolytic water hydrogen manufacturing system still includes seventh valve 9 and eighth valve 10, seventh valve 9 set up in electrolyte cooling device 5 with second branch road between the electrolysis trough 2, eighth valve 10 set up in electrolyte cooling device 5 with second branch road between circulating pump 4. The seventh valve 9 and the eighth valve 10 mainly control the opening and closing of the second branch pipeline where the electrolyte cooling device 5 is located, so that when the electrolyte cooling device does not work, the electrolyte is prevented from flowing through the second branch pipeline, and the circulation efficiency of the electrolyte is improved.
In the above, preferably, the first valve 14, the second valve 15, the third valve 12, the fourth valve 13, the fifth valve 11, the sixth valve 8, the seventh valve 9 and the eighth valve 10 are all solenoid valves, so as to realize remote control of a circuit and facilitate operation of a person.
The electrolytic tank 2 is an alkaline electrolytic tank or a solid polymer electrolytic tank. The specific form of the electrolytic cell can be set according to the actual application scene, and the application is not limited.
Specifically, the photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system works as follows, and in daytime, the photovoltaic power generation device 1 generates power to supply power to the electrolytic cell 2 to produce hydrogen; the seventh valve 9, the eighth valve 10 and the fifth valve 11 are opened, the sixth valve 8, the third valve 12 and the fourth valve 13 are closed, and the electrolyte is cooled at the electrolyte cooling device 5 through the gas-liquid separation device 3 and the electrolyte circulating pump 4 to form circulation; the first valve 14 and the second valve 15 are opened, and the heat collecting medium in the heat collecting device 7 absorbs heat through the photovoltaic power generation device 1 and the photo-thermal device 6. At night, the photovoltaic power generation device 1 does not generate power, and the electrolytic cell 2 is stopped; the seventh valve 9, the eighth valve 10 and the fifth valve 11 are closed, the sixth valve 8, the third valve 12 and the fourth valve 13 are opened, the electrolyte enters the heat collecting device 7 through the gas-liquid separation device 3 to absorb heat and preserve heat, the first valve 14 and the second valve 15 are closed, and the electrolyte enters the electrolyte circulating pump 4 after heat exchange and flows into the electrolytic bath through a pipeline to form circulation.
It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.
In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. The photovoltaic, photothermal and heat storage combined electrolyzed water hydrogen production system is characterized by comprising an electrolytic cell, a gas-liquid separation device and a circulating pump which are sequentially connected end to end through pipelines, and further comprising a photovoltaic power generation device, wherein the photovoltaic power generation device is electrically connected with the electrolytic cell, and the system also comprises a photothermal device and a heat collection device which are sequentially connected end to end through pipelines, wherein the heat collection device is internally provided with a heat collection medium, the heat collection medium flows through the pipelines to absorb heat through the photovoltaic power generation device and the photothermal device, and the heat collection device is connected in parallel on the pipelines between the gas-liquid separation device and the circulating pump through first branch pipelines.
2. The photovoltaic, photothermal and thermal storage combined hydrogen production system by electrolysis of water as claimed in claim 1, wherein a first valve is disposed on the pipeline between the photovoltaic power generation device and the heat collection device, and a second valve is disposed on the pipeline between the photothermal device and the heat collection device.
3. The photovoltaic, photothermal and thermal storage combined hydrogen production system by electrolysis of water as claimed in claim 1, wherein a third valve is disposed on the first branch pipeline between the heat collecting device and the gas-liquid separation device, and a fourth valve is disposed on the first branch pipeline between the heat collecting device and the circulation pump.
4. The photovoltaic, photothermal and thermal storage combined hydrogen production system by electrolysis of water as claimed in claim 1, wherein a fifth valve is arranged on the pipeline between the gas-liquid separation device and the circulating pump, and the fifth valve is arranged in parallel with the heat collection device.
5. The photovoltaic, photothermal, thermal storage combined hydrogen production from electrolysis water system of claim 1 wherein said photothermal device is a flat plate collector, a vacuum tube collector or a trough collector.
6. The photovoltaic, photothermal, thermal storage combined hydrogen production from electrolysis water system of claim 1 wherein said heat collection device is a hot water tank.
7. The photovoltaic, photothermal and thermal storage combined hydrogen production system by electrolysis of water as described in claim 1, further comprising an electrolyte cooling device, wherein said electrolyte cooling device is connected in parallel to the pipeline between said circulation pump and electrolytic cell through a second branch pipeline.
8. The photovoltaic, photothermal and thermal storage combined hydrogen production system by electrolysis of water as claimed in claim 7, further comprising a sixth valve, wherein said sixth valve is disposed on the pipeline between said circulating pump and said electrolytic cell, and said sixth valve and said electrolyte cooling device are disposed in parallel.
9. The photovoltaic, photothermal, and thermal storage combined hydrogen production by electrolysis of water system of claim 7, further comprising a seventh valve and an eighth valve, wherein said seventh valve is disposed on the second branch line between said electrolyte cooling device and said electrolytic cell, and said eighth valve is disposed on the second branch line between said electrolyte cooling device and said circulation pump.
10. The photovoltaic, photothermal, thermal storage combined electrolyzed water hydrogen production system of claim 1 wherein the electrolyzer is an alkaline electrolyzer or a solid polymer electrolyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619329.4U CN216891238U (en) | 2021-10-28 | 2021-10-28 | Photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122619329.4U CN216891238U (en) | 2021-10-28 | 2021-10-28 | Photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system |
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| Publication Number | Publication Date |
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| CN216891238U true CN216891238U (en) | 2022-07-05 |
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| CN202122619329.4U Active CN216891238U (en) | 2021-10-28 | 2021-10-28 | Photovoltaic, photo-thermal and heat storage combined water electrolysis hydrogen production system |
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| CN (1) | CN216891238U (en) |
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2021
- 2021-10-28 CN CN202122619329.4U patent/CN216891238U/en active Active
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