CN114574875A - Comprehensive utilization system for electrolytic hydrogen production of nuclear power plant - Google Patents
Comprehensive utilization system for electrolytic hydrogen production of nuclear power plant Download PDFInfo
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- CN114574875A CN114574875A CN202210204464.9A CN202210204464A CN114574875A CN 114574875 A CN114574875 A CN 114574875A CN 202210204464 A CN202210204464 A CN 202210204464A CN 114574875 A CN114574875 A CN 114574875A
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- hydrogen production
- heat
- comprehensive utilization
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
- F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B29/00—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously
- F25B29/003—Combined heating and refrigeration systems, e.g. operating alternately or simultaneously of the compression type system
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
- Y02A30/274—Relating to heating, ventilation or air conditioning [HVAC] technologies using waste energy, e.g. from internal combustion engine
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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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Metallurgy (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Combustion & Propulsion (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention discloses a comprehensive utilization system for electrolytic hydrogen production of a nuclear power plant, which relates to the technical field of hydrogen production waste heat utilization and comprises the following components: the system for producing hydrogen by electrolyzing water and the spent heat recovery system are characterized in that the electric power required by the system for producing hydrogen by electrolyzing water is provided by a nuclear island/boiler through the treatment of a first compressor, and the spent heat recovery system comprises: the system comprises a cooling water pump, a second compressor, an evaporator and a throttling device, wherein the water electrolysis hydrogen production system is cooled in closed circulation cooling water in the hydrogen production process so as to maintain the working temperature of the water electrolysis hydrogen production system. According to the invention, through the comprehensive utilization system for hydrogen production by electrolysis in the nuclear power plant, low-grade exhaust heat generated by electrolyzed water is converted into high-grade heat, and the high-grade heat can be used as a heat source of the low-temperature multi-effect distillation device for seawater desalination and water heating, so that the energy utilization rate and economy of the whole society are improved, the heat pollution is reduced, and the heat source cost is reduced.
Description
Technical Field
The invention relates to the technical field of hydrogen production waste heat utilization, in particular to a comprehensive utilization system for electrolytic hydrogen production of a nuclear power plant.
Background
At present, in thermodynamic systems of nuclear power plants, thermal power plants and the like in the world, Rankine cycle with steam as a working medium is generally adopted, generally, the cycle efficiency of a supercritical thermal power generating unit is about 45%, and the cycle efficiency of a large nuclear power generating unit is generally about 35% of saturated steam; in the world, the vast majority of electricity is converted from heat, for example: more than 60% of heat generated by a boiler, a nuclear reactor, photo-thermal, biomass and the like is changed into exhaust heat, and is discharged into the environment through warm water drainage and the like;
most of the waste heat becomes a pollution source of water body thermal pollution, which causes the temperature of the surface water body to rise, reduces the dissolved oxygen of the water body and aggravates the water body pollution, causes the community replacement of algae organisms, accelerates the biochemical reaction speed of aquatic organisms, damages the living environment of fishes and harms the human health; some hazardous events of thermal contamination have occurred in the world; the investigation result of the biostimization event of the heat pollution in the Bay of the Bessan caused by the nuclear power plant in America shows that almost all animals and plants are extinct in a water area with the water temperature rising by more than 4 ℃, common diatom, red algae and brown algae also disappear, and instead, high-temperature blue-green algae breed in large quantity;
the reason for causing the above problems is that the low-temperature waste heat is not fully utilized, the low-temperature waste heat value is considered to be low and have no utilization value from the traditional view point due to the low temperature of the waste heat, and the prior art has no way of completely recycling the low-temperature waste heat, so that a large amount of low-grade heat is lost, energy loss is caused, and a large amount of heat pollution is also generated.
Disclosure of Invention
The invention aims to provide a comprehensive utilization system for hydrogen production by electrolysis in a nuclear power plant, which aims to solve the problems that a large amount of low-grade heat loss, energy loss, large amount of thermal pollution and the like are caused in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a comprehensive utilization system for hydrogen production by electrolysis in a nuclear power plant comprises: the system comprises an electrolytic water hydrogen production system and a spent heat recovery system, wherein the electric power required by the electrolytic water hydrogen production system is provided by a nuclear island/boiler through a first compressor, and the spent heat recovery system comprises: the system comprises a cooling water pump, a second compressor, an evaporator and a throttling device, wherein the hydrogen production system from electrolyzed water is cooled in closed circulating cooling water in the hydrogen production process so as to maintain the working temperature of the hydrogen production system from electrolyzed water, the cooling water cooled by the hydrogen production system from electrolyzed water carries low-grade exhaust heat, the cooling water with the low-grade exhaust heat returns to the evaporator, low-pressure liquid refrigerant absorbs the low-grade heat in the cooling water in the evaporator and is continuously vaporized, the cooling water heat is absorbed and then returns to the hydrogen production system from electrolyzed water through the cooling water pump for cooling, then low-pressure gaseous refrigerant enters the second compressor, and the low-pressure gaseous refrigerant is pressurized and heated by the second compressor to obtain high-temperature high-pressure gaseous refrigerant.
Preferably, the high-temperature high-pressure gaseous refrigerant can be provided for a seawater desalination system, a feedwater heating system and other systems needing heat sources in heat supply users.
Preferably, after the heat supply user uses the heat supply system, the high-temperature and high-pressure gaseous refrigerant can be condensed, the condensed high-pressure liquid refrigerant is decompressed in the throttling device, changed into a low-pressure liquid refrigerant, and then enters the evaporator to increase the temperature of the low-pressure liquid refrigerant into a reusable heat source.
Preferably, the recycled heat source can be provided for a seawater desalination system, a feedwater heating system and other systems needing heat sources in heat supply users, so that comprehensive utilization of energy is realized.
Preferably, the temperature of the heat source for reuse is 90-110 ℃.
Preferably, the temperature of the closed circulation cooling water is 48 ℃, and the temperature of the closed circulation cooling water is low-grade exhaust heat.
Preferably, the high-temperature and high-pressure gaseous refrigerant enters a user heat exchange tube needing a heat source to transfer heat to a user.
Preferably, the operating temperature is maintained at 80-85 ℃.
Preferably, the exhaust heat of the water electrolysis hydrogen production system is completely recovered, and no warm discharge water is discharged.
Preferably, the low-grade spent heat is extracted to be a high-grade heat source, and the temperature of the high-grade heat source is 105-110 ℃.
Compared with the prior art, the invention has the beneficial effects that:
by the comprehensive utilization system for electrolytic hydrogen production in the nuclear power plant, low-grade exhaust heat generated by electrolyzed water is converted into high-grade heat, and the high-grade exhaust heat can be used as a heat source of the low-temperature multi-effect distillation device for seawater desalination and water heating, so that the overall energy utilization rate and economy of the society are improved, the heat pollution is reduced, and the heat source cost is reduced.
Drawings
FIG. 1 is a structural diagram of the comprehensive utilization system for electrolytic hydrogen production.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: a comprehensive utilization system for electrolytic hydrogen production of a nuclear power plant comprises: the system comprises an electrolyzed water hydrogen production system and a spent heat recovery system, wherein the power required by the electrolyzed water hydrogen production system is provided by a nuclear island/boiler through treatment of a first compressor, and the spent heat recovery system comprises: the system comprises a cooling water pump, a second compressor, an evaporator and a throttling device, wherein the electrolyzed water hydrogen production system cools an electrolyzed water device by closed circulating cooling water in the hydrogen production process so as to maintain the working temperature of the device at 85 ℃, the temperature of the used cooling water is 48 ℃, and the heat is low-grade waste heat;
cooling water with low-grade waste heat returns to the evaporator, low-pressure liquid refrigerant absorbs low-grade heat in the cooling water in the evaporator and is continuously vaporized, the cooling water heat is absorbed and then returns to the water electrolysis hydrogen production device through the cooling water pump for cooling, then low-pressure gaseous refrigerant enters the second compressor, the low-pressure gaseous refrigerant is pressurized and heated by the second compressor, and high-temperature high-pressure gaseous refrigerant enters a user heat exchange pipe needing a heat source and transfers the heat to a user;
the extracted heat source can be provided for a seawater desalination system, a water supply heating system and a heat supply user in the comprehensive system to form comprehensive utilization of energy;
after the use of a user, the high-temperature and high-pressure gaseous refrigerant is condensed, the condensed high-pressure liquid refrigerant is decompressed in a throttling device to be changed into a low-pressure liquid refrigerant, the low-pressure liquid refrigerant enters an evaporator, the temperature of the low-pressure liquid refrigerant is increased to be a reusable heat source, the temperature of the reusable heat source is 90-110 ℃, and a final heat trap condenser and a circulating water system which discharge waste heat in a traditional thermodynamic system and an air cooling system are replaced;
the exhaust heat of the water electrolysis hydrogen production is completely recovered, no warm exhaust water is discharged, and the product hydrogen in the water electrolysis hydrogen production device is transported to a hydrogen user through a hydrogen compressor and a hydrogen filling and storing device;
the exhaust heat is upgraded into a high-grade heat source, and the temperature of the high-grade heat source is 110 ℃;
the comprehensive utilization system for hydrogen production by electrolysis in the nuclear power plant converts low-grade waste heat generated by electrolyzed water into high-grade heat, and can be used as a heat source of a low-temperature multi-effect distillation device for seawater desalination and water heating, so that the overall energy utilization rate and economy of the society are improved, the heat pollution is reduced, the heat source cost is reduced, and hydrogen obtained by hydrogen production is provided for users.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A comprehensive utilization system for hydrogen production by electrolysis in a nuclear power plant comprises: the system is characterized in that the electric power required by the system is provided by a nuclear island/boiler through a first compressor, and the spent heat recovery system comprises: the system comprises a cooling water pump, a second compressor, an evaporator and a throttling device, wherein the hydrogen production system from electrolyzed water is cooled in closed circulating cooling water in the hydrogen production process so as to maintain the working temperature of the hydrogen production system from electrolyzed water, the cooling water cooled by the hydrogen production system from electrolyzed water carries low-grade exhaust heat, the cooling water with the low-grade exhaust heat returns to the evaporator, low-pressure liquid refrigerant absorbs the low-grade heat in the cooling water in the evaporator and is continuously vaporized, the cooling water heat is absorbed and then returns to the hydrogen production system from electrolyzed water through the cooling water pump for cooling, then low-pressure gaseous refrigerant enters the second compressor, and the low-pressure gaseous refrigerant is pressurized and heated by the second compressor to obtain high-temperature high-pressure gaseous refrigerant.
2. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 1, wherein the high-temperature and high-pressure gaseous refrigerant can be provided to a seawater desalination system, a feedwater heating system and other systems requiring heat sources in heat supply users.
3. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 2, wherein after being used by a heat supply user, the high-temperature and high-pressure gaseous refrigerant is condensed, and the condensed high-pressure liquid refrigerant is depressurized in the throttling device to become a low-pressure liquid refrigerant, and then enters the evaporator to be heated and raised to be a reusable heat source.
4. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 3, wherein the recycled heat source can be provided for seawater desalination systems, feed water heating systems and other systems requiring heat sources in heat supply users, so as to realize comprehensive utilization of energy.
5. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants according to claim 3, characterized in that the temperature of the heat source for recycling is 90-110 ℃.
6. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants according to claim 1, characterized in that the temperature of the closed circulation cooling water is 48 ℃, and the temperature of the closed circulation cooling water is low-grade exhaust heat.
7. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 1, wherein the high-temperature and high-pressure gaseous refrigerant enters a user heat exchange pipe needing a heat source to transfer heat to users.
8. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 1, wherein the operating temperature is maintained at 80-85 ℃.
9. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plants as claimed in claim 1, wherein the exhaust heat of the hydrogen production system through electrolysis is completely recovered, and no warm discharge water is discharged.
10. The comprehensive utilization system for hydrogen production through electrolysis in nuclear power plant as claimed in claim 1, wherein the low-grade exhaust heat is upgraded to a high-grade heat source with a temperature of 105-110 ℃.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102022210397A1 (en) | 2022-09-30 | 2024-04-04 | Siemens Energy Global GmbH & Co. KG | Combined plant and method for operating a combined plant |
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| CN213680909U (en) * | 2020-11-17 | 2021-07-13 | 上海绿巨人爱爵能源科技有限公司 | Electrolytic water hydrogen heat combined supply device |
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2022
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| JP2011208242A (en) * | 2010-03-30 | 2011-10-20 | Jfe Steel Corp | Hydrogen production apparatus using waste heat and method for producing hydrogen using waste heat |
| DE102010020265A1 (en) * | 2010-05-11 | 2011-11-17 | Siemens Aktiengesellschaft | Process for producing hydrogen from water by means of a high-temperature electrolyzer |
| JP2013227634A (en) * | 2012-04-26 | 2013-11-07 | Mitsubishi Heavy Ind Ltd | Gas production system and method for operating gas production system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE102022210397A1 (en) | 2022-09-30 | 2024-04-04 | Siemens Energy Global GmbH & Co. KG | Combined plant and method for operating a combined plant |
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| CN114574875B (en) | 2023-09-05 |
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Effective date of registration: 20221024 Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant after: Shandong Nuclear Power Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. |
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Address after: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant after: Shanghai Nuclear Engineering Research and Design Institute Co.,Ltd. Applicant after: Shandong Nuclear Power Co.,Ltd. Address before: No. 29 Hong Cao Road, Xuhui District, Shanghai Applicant before: SHANGHAI NUCLEAR ENGINEERING RESEARCH & DESIGN INSTITUTE Co.,Ltd. Applicant before: Shandong Nuclear Power Co.,Ltd. |
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