CN114277393A - Electrolytic hydrogen production heat energy recycling system and control method thereof - Google Patents
Electrolytic hydrogen production heat energy recycling system and control method thereof Download PDFInfo
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- CN114277393A CN114277393A CN202111400949.7A CN202111400949A CN114277393A CN 114277393 A CN114277393 A CN 114277393A CN 202111400949 A CN202111400949 A CN 202111400949A CN 114277393 A CN114277393 A CN 114277393A
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 72
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 72
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 72
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000004064 recycling Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 122
- 238000001223 reverse osmosis Methods 0.000 claims abstract description 78
- 239000000498 cooling water Substances 0.000 claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000001301 oxygen Substances 0.000 claims abstract description 35
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 35
- 239000003513 alkali Substances 0.000 claims abstract description 31
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 18
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 6
- 230000001105 regulatory effect Effects 0.000 claims description 39
- 239000002351 wastewater Substances 0.000 claims description 18
- 238000001816 cooling Methods 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 9
- 230000001276 controlling effect Effects 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 5
- 238000012546 transfer Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 4
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 238000011033 desalting Methods 0.000 abstract description 6
- 239000002918 waste heat Substances 0.000 abstract description 3
- 238000010612 desalination reaction Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000012267 brine Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000000670 limiting effect Effects 0.000 description 2
- 239000007788 liquid Substances 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
- 230000036961 partial effect Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 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
- 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
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Abstract
The application provides an electrolytic hydrogen production heat energy recycling system and a control method thereof, which comprises a first circulation loop formed by an electrolytic tank, a hydrogen separator and an alkali liquor cooler which are sequentially connected end to end through pipelines, and an oxygen separator, the oxygen separator is sequentially connected with the alkali liquor cooler and the electrolytic bath end to end through pipelines to form a second circulation loop, and also comprises a demineralized water device, the desalting device comprises a raw water tank, a reverse osmosis element and a water production water tank which are sequentially connected through a pipeline, the cooling water passing through the cooling water system sequentially passes through the alkali liquor cooler and the reverse osmosis element is in order to be right the reverse osmosis element carries out heat exchange, and the water electrolysis hydrogen production waste heat exchange demineralized water device is utilized, so that the water temperature of the demineralized water device can be ensured to be constant, the water yield of the device is not reduced due to the influence of the water temperature, and the demineralized water device is effectively ensured to be in an efficient running state.
Description
Technical Field
The application relates to the technical field of electrolytic hydrogen production, in particular to a heat energy recycling system for electrolytic hydrogen production and a control method thereof.
Background
The raw material water is required to be supplemented to the electrolytic cell from time to time in the operation process of the electrolytic cell device, a desalting device is required to supply the raw material water to the electrolytic cell, the desalting device adopts a bipolar reverse osmosis process, however, a reverse osmosis membrane element is very sensitive to the change of water temperature, the yield designed by a common equipment manufacturer is designed at the water temperature of 25 ℃, and the water yield can be increased or reduced by 3-4% when the temperature is increased or reduced by 1 ℃ under the same pressure. If the water temperature is lower in a cold area, the water yield is rapidly reduced, the proportion of produced wastewater is increased, and the energy consumption is increased. The pure water process is traditionally accompanied by heat from an external steam or electric heat source to maintain the operating temperature, requiring additional energy consumption.
Disclosure of Invention
The present application is directed to solving, at least to some extent, one of the technical problems in the related art.
For this reason, the aim at of this application provides an electrolysis hydrogen production heat energy cyclic utilization system, through the cooling water that sets up cooling water system pass through in proper order the alkali lye cooler with the reverse osmosis component is in order to right the reverse osmosis component carries out the heat transfer, utilizes water electrolysis hydrogen production waste heat transfer demineralized water device, makes demineralized water device temperature can guarantee at the constant temperature, does not descend because of the water yield that leads to the device that receives the water temperature influence, and effectual assurance demineralized water device is in under the efficient running state.
In order to reach above-mentioned purpose, the utility model provides an electrolysis hydrogen production heat energy cyclic utilization system, include the first circulation circuit that electrolytic cell, hydrogen separator and alkali lye cooler that connect gradually end to end through the pipeline formed, still include the oxygen separator, the oxygen separator pass through the pipeline with the alkali lye cooler with the electrolytic cell connects gradually end to end forms second circulation circuit, still includes demineralized water device, demineralized water device includes former water tank, reverse osmosis component and the product water tank that connects gradually through the pipeline, former water tank is used for pouring into raw material water, still includes cooling water system, cooling water system's cooling water passes through in proper order alkali lye cooler with reverse osmosis component is with right reverse osmosis component carries out the heat transfer.
Furthermore, the cooling water system comprises a circulating pipeline passing through the alkali liquor cooler and the reverse osmosis element, wherein a water cooling tower and a pneumatic membrane regulating valve are sequentially arranged on the circulating pipeline in the direction of the reverse osmosis element flowing to the alkali liquor cooler; and the circulation pipeline is provided with a regulating valve in the direction of the alkali liquor cooler flowing to the reverse osmosis element.
And the hydrogen heat exchanger and the oxygen heat exchanger are connected with a circulating pipeline between the pneumatic membrane regulating valve and the alkali liquor cooler through pipelines, and cooling water outlets of the hydrogen heat exchanger and the oxygen heat exchanger are connected with the circulating pipeline between the alkali liquor cooler and the regulating valve.
The hydrogen scrubber is connected with a hydrogen exhaust pipe, and the oxygen scrubber is connected with an oxygen exhaust pipe.
Furthermore, the demineralized water device also comprises a water pump and a filtering device which are arranged on a pipeline between the raw water tank and the reverse osmosis element.
Further, still include the switch board, the governing valve with the switch board electricity is connected.
Further, a water production port of the reverse osmosis element is provided with a first flow meter, a waste water port of the reverse osmosis element is provided with a second flow meter, and the first flow meter and the second flow meter are respectively and electrically connected with the control cabinet.
Furthermore, a water producing port of the reverse osmosis element is provided with a temperature sensor, and the temperature sensor is electrically connected with the control cabinet.
A control method of an electrolytic hydrogen production heat energy recycling system is applied to the electrolytic hydrogen production heat energy recycling system and comprises the following steps of obtaining the water yield of a reverse osmosis element through a first flowmeter arranged at a water yield of the reverse osmosis element; acquiring the wastewater quantity of the reverse osmosis element through a second flowmeter arranged at the wastewater outlet of the reverse osmosis element; comparing the ratio of the water yield to the wastewater yield with a preset value; and controlling the regulating valve according to the comparison result.
Further, controlling the regulating valve according to the comparison result specifically includes: when the ratio is smaller than a preset value, the opening degree of the regulating valve is increased; and when the ratio is larger than the preset value, reducing the opening of the regulating valve.
Further, the method also comprises the step of acquiring the water production temperature of the reverse osmosis element through a temperature sensor arranged at the water production port of the reverse osmosis element; comparing the water production temperature with a preset temperature, and increasing the opening degree of the regulating valve when the water production temperature is lower than the preset temperature; and when the water production temperature is lower than the preset temperature, reducing the opening degree of the regulating valve.
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 view of a partial structure of a thermal energy recycling system for hydrogen production by electrolysis according to an embodiment of the present application;
fig. 2 is a schematic view of a partial structure of a thermal energy recycling system for hydrogen production by electrolysis according to another 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 and fig. 2 are schematic structural diagrams of an electrolytic hydrogen production heat energy recycling system according to an embodiment of the present application.
Referring to fig. 1 and 2, an electrolytic hydrogen production heat energy recycling system comprises a first circulation loop formed by an electrolytic bath 1, a hydrogen separator 2 and an alkali liquor cooler 3 which are sequentially connected end to end through pipelines, an oxygen separator 4, a desalting water device and a cooling water system, wherein the oxygen separator 4, the alkali liquor cooler 3 and the electrolytic bath 1 are sequentially connected end to end through pipelines to form a second circulation loop, the desalting water device comprises a raw water tank 5, a reverse osmosis element 6 and a water production water tank 7 which are sequentially connected through pipelines, the raw water tank 5 is used for injecting raw water, and cooling water of the cooling water system sequentially passes through the alkali liquor cooler 3 and the reverse osmosis element 6 to exchange heat with the reverse osmosis element 6.
In this embodiment, the first circulation loop and the second circulation loop form the hydrogen production system 100, the desalination device is used for the hydrogen production system 100 to replenish water after carrying out desalination filtration treatment on raw water, specifically, the water produced by the desalination device enters the hydrogen and oxygen scrubber through the water replenishing pump respectively, then enters the hydrogen and oxygen separator through the scrubber overflow pipe, joins with alkali liquor and then enters the electrolytic cell through the alkali liquor circulating pump to be consumed by electrolysis, in other embodiments, the water produced by the desalination device can also be directly replenished into the electrolytic cell 1. The cooling water system is used for cooling the alkali liquor cooler 3 of the electrolytic hydrogen production system so that the temperature of the alkali liquor flowing back to the electrolytic cell 1 meets the requirement.
The cooling water system comprises a circulating pipeline 8 passing through the alkali liquor cooler 3 and the reverse osmosis element 6, wherein a cooling tower 9 and a pneumatic membrane adjusting valve 10 are sequentially arranged on the circulating pipeline 8 in the direction of the reverse osmosis element 6 flowing to the alkali liquor cooler 3; in the direction of the flow of the lye cooler 3 to the reverse osmosis element 6, the circulation line 8 is provided with a regulating valve 13.
In this embodiment, in the direction that the reverse osmosis element 6 flows to the lye cooler 3, that is, the cooling water flows back after heat exchange with the reverse osmosis element 6 is completed, the cooling water has a lower temperature through circulation, the pneumatic membrane regulating valve 10 is arranged on the circulation pipeline 8, the cooling water is controlled to enter the lye cooler through the pneumatic membrane regulating valve 10, and the amount of the cooling water is automatically controlled according to the temperature of the circulating lye, so as to achieve the purpose of controlling the temperature of the electrolytic cell. The water cooling tower 9 is used for further cooling the cooling water which flows back to the alkali liquor cooler 3 or the heat exchanger, so that a better cooling effect is ensured. In other embodiments, the cooling water system can be replenished with liquid through the water cooling tower 9, so that the liquid is convenient to replenish instantly, and in order to improve the circulation efficiency of the cooling water in the cooling water system, a cooling circulation water pump can be arranged between the water cooling tower 9 and the pneumatic film adjusting valve 10, so that the cooling effect of the cooling water system on the electrolytic hydrogen production system is improved. In the direction that the alkali lye cooler 3 flows to the reverse osmosis element 6, the circulating pipeline 8 is provided with an adjusting valve 13, and the water quantity of cooling water flowing through the reverse osmosis element is controlled by adjusting the opening degree of the adjusting valve 13, so that the heat exchange temperature of the reverse osmosis element is controlled, and the reverse osmosis element has higher water production efficiency.
The cooling circulating water from the water electrolysis hydrogen production device after heat exchange enters the reverse osmosis element of the desalter device after the flow is adjusted by the adjusting valve 13 for heat exchange, and enters the water cooling tower 9 after heat exchange.
The system for recycling the heat energy generated by the electrolytic hydrogen production further comprises a hydrogen heat exchanger 11 connected with the hydrogen separator 2 through a pipeline and an oxygen heat exchanger 12 connected with the oxygen separator 4 through a pipeline, cooling water inlets of the hydrogen heat exchanger 11 and the oxygen heat exchanger 12 are connected to a circulation pipeline 8 between the pneumatic membrane regulating valve 10 and the alkali liquor cooler 3 through pipelines, and cooling water outlets of the hydrogen heat exchanger 11 and the oxygen heat exchanger 12 are connected to a circulation pipeline between the alkali liquor cooler 3 and the regulating valve 13.
In this embodiment, the hydrogen heat exchanger 11 and the oxygen heat exchanger 12 are connected to the cooling water system for heat exchange circulation, so that the utilization of the waste heat of the electrolytic hydrogen production system by the cooling water system is further improved, the temperature of the cooling water system for heat exchange with the cooling water after the heat exchange of the electrolytic hydrogen production system is higher, and the temperature of the reverse osmosis element is further kept.
The system for recycling the heat energy generated by the electrolytic hydrogen production further comprises a hydrogen scrubber 14 connected with the hydrogen heat exchanger 11 through a pipeline and an oxygen scrubber 15 connected with the oxygen heat exchanger 12 through a pipeline, wherein the hydrogen scrubber 14 is connected with a hydrogen exhaust pipe, and the oxygen scrubber 15 is connected with an oxygen exhaust pipe. The hydrogen produced by the electrolytic bath 1 is washed by the hydrogen washer and then discharged from the hydrogen exhaust pipe, and the oxygen produced is washed by the oxygen washer and then discharged from the oxygen exhaust pipe, so that pure hydrogen and oxygen are obtained, and the subsequent utilization is facilitated.
The desalination device also comprises a water pump 16 and a filtering device 17 which are arranged on a pipeline between the raw water tank 5 and the reverse osmosis element 6. In this embodiment, filter 17 specifically includes the sand filter that sets up through the pipeline is parallelly connected, guarantees to realize the filtration to the raw water under the condition of discharge, makes things convenient for reverse osmosis element 6's processing, also is favorable to improving reverse osmosis element's life. The water pump is favorable for improving the water production efficiency of the demineralized water device.
The electrolytic hydrogen production heat energy recycling system further comprises a control cabinet 18, and the regulating valve 13 is electrically connected with the control cabinet 18. The remote control of the regulating valve 13 can be realized by arranging the control cabinet 18, and the automatic remote operation is realized.
The water production port of the reverse osmosis element 6 is provided with a first flow meter 19, the waste water port of the reverse osmosis element 6 is provided with a second flow meter 20, and the first flow meter 19 and the second flow meter 20 are respectively and electrically connected with the control cabinet 18. Through the flow monitoring to the mouth of a river and the waste water mouth of producing of reverse osmosis component 6, and then adjust the aperture size of governing valve, can be according to the accurate regulation and control reverse osmosis component's of the aperture of the water condition of producing of reverse osmosis component through adjusting the governing valve temperature, and then guarantee that the demineralized water device does not receive external environmental impact, keep higher product water efficiency throughout.
A water producing port of the reverse osmosis element 6 is provided with a temperature sensor which is electrically connected with the control cabinet 18. Through set up temperature sensor in reverse osmosis element 6 delivery port department, further confirm reverse osmosis element's the product water temperature, avoid the erroneous judgement of switch board, improve the stability of system.
A control method of an electrolytic hydrogen production heat energy recycling system is applied to the electrolytic hydrogen production heat energy recycling system and comprises the following steps that a first flowmeter 19 arranged at a water production port of a reverse osmosis element 6 is used for acquiring the water yield of the reverse osmosis element 6; acquiring the wastewater quantity of the reverse osmosis element 6 through a second flowmeter 20 arranged at the wastewater outlet of the reverse osmosis element 6; comparing the ratio of the water yield to the wastewater yield with a preset value; and controlling the regulating valve according to the comparison result.
In this embodiment, whether the demineralized water device meets the requirement of yield is monitored according to the ratio of water production and wastewater production of the first flow meter 19 and the second flow meter 20, the preset value is usually 3, that is, the designed water production of the demineralized water device is about 3 times of the water production and wastewater production, the demineralized water device has good working condition and does not need to intervene, when the ratio changes, the adjusting valve needs to be adjusted in time, and the temperature of the reverse osmosis element is adjusted to enable the ratio of the water production and the wastewater production to reach the preset requirement.
A control method of an electrolytic hydrogen production heat energy recycling system specifically comprises the following steps of: when the ratio is smaller than a preset value, the opening degree of the regulating valve 13 is increased; when the ratio is greater than the preset value, the opening of the regulating valve 13 is reduced. Specifically, if the opening degree of the regulating valve is increased, the water flow increases, the temperature of the reverse osmosis element increases, the water yield increases, and if the opening degree of the regulating valve is decreased, the water flow decreases, the temperature of the reverse osmosis element decreases, and the water yield decreases.
The control method of the electrolytic hydrogen production heat energy recycling system further comprises the steps of acquiring the water production temperature of the reverse osmosis element 6 through a temperature sensor arranged at the water production port of the reverse osmosis element 6; comparing the water production temperature with a preset temperature, and increasing the opening degree of the regulating valve when the water production temperature is lower than the preset temperature; and when the water production temperature is lower than the preset temperature, reducing the opening degree of the regulating valve.
Specifically, the preset temperature is 25 ℃, the water temperature at the outlet of the reverse osmosis element is 25 ℃ as a temperature control point, the opening of the regulating valve is controlled, the opening of the regulating valve is 50% when the water temperature at the outlet of the reverse osmosis element is 25 ℃, the opening of the regulating valve is properly adjusted when the temperature is lower than 25 ℃, and the valve is properly closed when the temperature of the regulating valve is higher than 25 ℃. Therefore, the water yield of the desalting device is not influenced by the environmental temperature, the productivity is ensured, and the discharge capacity of the strong brine industrial wastewater is reduced; and secondly, a part of the work of heat exchange of the circulating cooling tower is shared, and the energy consumption of the device is reduced.
In this application, the flow sensor monitoring of using is leading to, the useless volume of monitoring product water yield and strong brine aquatic products, the temperature of export of reverse osmosis component is supplementary, judge that demineralized water device whether leads to the temperature to hang down the influence output because the reverse osmosis component heat transfer is not enough, if monitor output unusual can feed back control system, control system conveys the signal for adjusting valve, adjusting valve carries out the switching value of signal instruction adjusting valve, adjust reverse osmosis component temperature with this, thereby reach the high-efficient operation of device, reduce the useless volume of strong brine (waste water) product and reduce the running cost.
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 (11)
1. The utility model provides an electrolysis hydrogen production heat energy cyclic utilization system, its characterized in that includes the first circulation circuit that forms through electrolysis trough, hydrogen separator and the alkali lye cooler of pipeline end to end connection in proper order, still includes the oxygen separator, the oxygen separator pass through the pipeline with the alkali lye cooler with the electrolysis trough is end to end connection in proper order forms second circulation circuit, still includes the demineralized water device, the demineralized water device includes former water tank, reverse osmosis component and the product water tank that connect gradually through the pipeline, former water tank is used for pouring into raw materials water, still includes cooling water system, cooling water system's cooling water passes through in proper order the alkali lye cooler with reverse osmosis component is in order to reverse osmosis component carries out the heat transfer.
2. The system for recycling heat energy generated by hydrogen production through electrolysis according to claim 1, wherein the cooling water system comprises a circulation pipeline passing through the lye cooler and the reverse osmosis element, wherein a water cooling tower and a pneumatic membrane regulating valve are sequentially arranged on the circulation pipeline in the direction from the reverse osmosis element to the lye cooler; and the circulation pipeline is provided with a regulating valve in the direction of the alkali liquor cooler flowing to the reverse osmosis element.
3. The system for recycling heat energy generated by hydrogen production through electrolysis according to claim 2, further comprising a hydrogen heat exchanger connected with the hydrogen separator through a pipeline and an oxygen heat exchanger connected with the oxygen separator through a pipeline, wherein cooling water inlets of the hydrogen heat exchanger and the oxygen heat exchanger are connected with a circulation pipeline between the pneumatic membrane regulating valve and the alkali liquor cooler through pipelines, and cooling water outlets of the hydrogen heat exchanger and the oxygen heat exchanger are connected with a circulation pipeline between the alkali liquor cooler and the regulating valve.
4. The system for recycling heat energy generated by hydrogen production through electrolysis according to claim 3, further comprising a hydrogen scrubber connected with the hydrogen heat exchanger through a pipeline and an oxygen scrubber connected with the oxygen heat exchanger through a pipeline, wherein the hydrogen scrubber is connected with a hydrogen exhaust pipe, and the oxygen scrubber is connected with an oxygen exhaust pipe.
5. The thermal energy recycling system for electrolytic hydrogen production according to claim 1, wherein the demineralized water device further comprises a water pump and a filtering device arranged on a pipeline between the raw water tank and the reverse osmosis element.
6. The electrolytic hydrogen production heat energy recycling system of claim 2, further comprising a control cabinet, wherein the regulating valve is electrically connected with the control cabinet.
7. The system for recycling heat energy generated by hydrogen production through electrolysis according to claim 6, wherein a water production port of the reverse osmosis element is provided with a first flow meter, a waste water port of the reverse osmosis element is provided with a second flow meter, and the first flow meter and the second flow meter are respectively and electrically connected with the control cabinet.
8. The system for recycling heat energy generated by hydrogen production through electrolysis according to claim 6, wherein a temperature sensor is arranged at a water production port of the reverse osmosis element, and the temperature sensor is electrically connected with the control cabinet.
9. A control method of an electrolytic hydrogen production heat energy recycling system is characterized by being applied to the electrolytic hydrogen production heat energy recycling system of any one of claims 1 to 8, and comprising the following steps of obtaining the water yield of a reverse osmosis element through a first flowmeter arranged at a water yield of the reverse osmosis element; acquiring the wastewater quantity of the reverse osmosis element through a second flowmeter arranged at the wastewater outlet of the reverse osmosis element; comparing the ratio of the water yield to the wastewater yield with a preset value; and controlling the regulating valve according to the comparison result.
10. The control method of the thermal energy recycling system for hydrogen production by electrolysis according to claim 9, wherein the controlling the regulating valve according to the comparison result specifically comprises: when the ratio is smaller than a preset value, the opening degree of the regulating valve is increased; and when the ratio is larger than the preset value, reducing the opening of the regulating valve.
11. The control method of the thermal energy recycling system for hydrogen production by electrolysis according to claim 9, further comprising obtaining the water production temperature of the reverse osmosis element by a temperature sensor disposed at the water production port of the reverse osmosis element; comparing the water production temperature with a preset temperature, and increasing the opening degree of the regulating valve when the water production temperature is lower than the preset temperature; and when the water production temperature is lower than the preset temperature, reducing the opening degree of the regulating valve.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114717576A (en) * | 2022-05-07 | 2022-07-08 | 阳光氢能科技有限公司 | Hydrogen production system and alkali liquor circulation method |
| CN114990602A (en) * | 2022-05-12 | 2022-09-02 | 中国华能集团清洁能源技术研究院有限公司 | Desalted water integrated system for water electrolysis hydrogen production device |
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