CN112952905A - System combining electrolytic hydrogen production and photovoltaic power station - Google Patents
System combining electrolytic hydrogen production and photovoltaic power station Download PDFInfo
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- CN112952905A CN112952905A CN202110271123.9A CN202110271123A CN112952905A CN 112952905 A CN112952905 A CN 112952905A CN 202110271123 A CN202110271123 A CN 202110271123A CN 112952905 A CN112952905 A CN 112952905A
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- hydrogen production
- water
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- photovoltaic power
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 160
- 239000001257 hydrogen Substances 0.000 title claims abstract description 160
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 160
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 125
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 119
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 53
- 239000007787 solid Substances 0.000 claims abstract description 35
- 239000000498 cooling water Substances 0.000 claims abstract description 34
- 229920000642 polymer Polymers 0.000 claims abstract description 18
- 239000007864 aqueous solution Substances 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 230000009466 transformation Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 8
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 239000002918 waste heat Substances 0.000 claims abstract description 8
- 238000010248 power generation Methods 0.000 claims description 19
- 238000004140 cleaning Methods 0.000 claims description 17
- 238000002360 preparation method Methods 0.000 claims description 15
- 239000008213 purified water Substances 0.000 claims description 15
- 239000000178 monomer Substances 0.000 claims description 10
- 239000003792 electrolyte Substances 0.000 claims description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 229910001092 metal group alloy Inorganic materials 0.000 claims description 6
- 239000010425 asbestos Substances 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 229910052895 riebeckite Inorganic materials 0.000 claims description 4
- 229910003296 Ni-Mo Inorganic materials 0.000 claims description 3
- 239000007868 Raney catalyst Substances 0.000 claims description 3
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 3
- 229910000564 Raney nickel Inorganic materials 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- DDTIGTPWGISMKL-UHFFFAOYSA-N molybdenum nickel Chemical compound [Ni].[Mo] DDTIGTPWGISMKL-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 10
- 239000000446 fuel Substances 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000000428 dust Substances 0.000 description 7
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 6
- 238000002156 mixing Methods 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000005406 washing Methods 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000000629 steam reforming Methods 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 229920005597 polymer membrane Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 229910052604 silicate mineral Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
-
- 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
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/10—Cleaning arrangements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
- H02J2300/20—The dispersed energy generation being of renewable origin
- H02J2300/22—The renewable source being solar energy
- H02J2300/24—The renewable source being solar energy of photovoltaic origin
-
- 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- 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 relates to the field of hydrogen manufacturing, in particular to a system combining electrolytic hydrogen production with a photovoltaic power station, which comprises a power transmission and supply system, an electrolytic water hydrogen production system and a cooling water waste heat recovery system; the power transmission, transformation and supply system is connected with the photovoltaic power station, the power transmission, transformation and supply system is arranged on a bus of an output line of the photovoltaic power station, a step-down transformer and an inverter are arranged on the bus of the output line of the photovoltaic power station, and one ends of the step-down transformer and the inverter, which are far away from the electric switch, are connected with the electrolyzed water hydrogen production system; the photovoltaic power station comprises a plurality of photovoltaic panels which are arranged in an array; the water electrolysis hydrogen production system comprises an alkaline aqueous solution electrolysis hydrogen production device, a solid polymer electrolysis hydrogen production device and a high-temperature solid oxide electrolysis hydrogen production device. The method has the advantages that the hydrogen production by electrolysis is combined with the flexibility peak shaving of the photovoltaic power station, the power grid pressure in the peak period of power utilization can be relieved, and the effect of precious peak shaving load is provided for the power grid.
Description
Technical Field
The application relates to the field of hydrogen manufacturing, in particular to a system combining electrolytic hydrogen production with a photovoltaic power station.
Background
In recent years, in the three northeast regions of China, the power market has abundant capacity, peak-adjustable power supplies such as a gas turbine and pumped storage are scarce, the contradiction between the peak adjustment of a power grid and the flexibility of a thermal power generating unit is prominent, the capacity of the power grid for absorbing new energy such as wind power, photoelectric energy, nuclear power and the like is insufficient, and the phenomenon of wind abandonment is serious. The cogeneration unit operates in a mode of 'fixing the power by heat', and the peak regulation capacity is only about 10%. The peak shaving difficulty has become the most prominent problem in the operation of the power grid. At present, the flexible peak regulation and reconstruction of domestic thermal power is aimed at winter heat supply units, and how to regulate the peak in summer is a difficult problem in front of numerous hydraulic power plants. In order to meet the peak regulation requirement of a power grid and the survival requirement of a power plant in intense competition, deep peak regulation is imperative.
The annual hydrogen yield of China is over ten million tons in scale and is the first in the world, and the industrial-scale hydrogen production method mainly comprises methane steam reforming and water electrolysis hydrogen production, wherein the water electrolysis hydrogen production yield accounts for about 4% of the total hydrogen production yield in the world. Although steam reforming of methane is currently the most economical method of producing hydrogen, it not only consumes large quantities of fossil fuels, but also produces large quantities of carbon dioxide in the production process. The hydrogen production process by water electrolysis is simple, the product purity is high, the renewable energy is used as an energy source, the hydrogen can be efficiently, cleanly and massively prepared, and the technology can also be used for the emission reduction and conversion of carbon dioxide and has a wide development prospect.
The current methods for producing hydrogen by electrolyzing water mainly comprise three methods: hydrogen production by alkaline electrolysis of water, hydrogen production by electrolysis of water by solid polymers, and hydrogen production by electrolysis of water by high-temperature solid oxides. The alkaline water electrolysis hydrogen production is a mature hydrogen production method at present, so far, the industrial large-scale water electrolysis hydrogen production basically adopts the alkaline water electrolysis hydrogen production technology, and the method has simple process and easy operation. The main energy consumption of the electrolytic hydrogen production is electric energy, the power consumption of hydrogen per cubic meter is about 4.5-5.5 kWh, and the electricity charge accounts for about 80% of the production cost of the whole electrolytic hydrogen production. Therefore, the water electrolysis hydrogen production technology is particularly suitable for energy carriers for renewable energy power generation such as photovoltaic power generation. However, these existing electrolytic hydrogen production systems are not combined with the flexible peak shaving performance and the cooling water system of the photovoltaic power plant, and the produced hydrogen is only compressed and transported by a steel cylinder, so that large-scale production cannot be realized.
Disclosure of Invention
In order to combine the electrolytic hydrogen production with the flexible peak shaving of the photovoltaic power station, the online electric quantity is intelligently adjusted when the power consumption of a power grid is low, the hydrogen production is carried out by utilizing the electric energy generated by the photovoltaic power station, the power consumption of the power grid is high, the electric energy generated by the photovoltaic power station can be connected to a power transmission pipe network, the power grid pressure in the power consumption peak period can be relieved, and the precious peak shaving load is provided for the power grid.
The application provides a system that electrolytic hydrogen production and photovoltaic power generation station combine adopts following technical scheme:
a system combining electrolytic hydrogen production with a photovoltaic power station comprises a power grid peak regulation control system, a power transmission and transformation and power supply system, an electrolytic water hydrogen production system, a hydrogen collecting, purifying and external conveying system, a purified water preparation and water supplementing system, a cooling water waste heat recovery system and an electrolytic cell high-temperature steam supply system;
the power transmission, transformation and power supply system is connected with the photovoltaic power station, the power transmission, transformation and power supply system is arranged on a bus of an output line of the photovoltaic power station, a step-down transformer and an inverter are arranged on the bus of the output line of the photovoltaic power station, an electric switch is further arranged on the output line between the step-down transformer and the photovoltaic power station and between the inverter and the photovoltaic power station, and one ends of the step-down transformer and the inverter, which are far away from the electric switch, are connected with the electrolyzed water hydrogen production;
the photovoltaic power station comprises a plurality of photovoltaic panels which are arranged in parallel;
the water electrolysis hydrogen production system comprises an alkaline aqueous solution electrolysis hydrogen production device, a solid polymer electrolysis hydrogen production device and a high-temperature solid oxide electrolysis hydrogen production device.
Through adopting above-mentioned technical scheme, this application sets up the combination of photovoltaic power generation station and electrolysis hydrogen manufacturing, can effectually combine both, and during the power consumption peak, the electric quantity that photovoltaic power generation station sent can directly carry the electric wire netting, alleviates the power consumption peak of electric wire netting, and during the power consumption valley, the electric quantity that photovoltaic power generation station produced can be used for carrying out electrolysis hydrogen manufacturing, makes the resource obtain the maximize and utilizes.
Optionally, a cleaning device is arranged on the surface of the photovoltaic panel, and the cleaning device includes a cleaning assembly arranged on the surface of the photovoltaic panel in a sliding manner and a driving assembly for driving the cleaning assembly to slide;
the cleaning assembly comprises a brush handle arranged above the surface of the photovoltaic panel, the brush handle is arranged along the width direction of the photovoltaic panel, and the side of the brush handle facing the photovoltaic panel is fixedly connected with a brush and a sponge strip which are arranged along the length direction of the brush handle;
the drive assembly includes that the symmetry just rotates guide bar and the lead screw of setting in the photovoltaic board both sides, the length direction of guide bar and lead screw is the same with the length direction of photovoltaic board, and guide bar and lead screw pass the tip of brush holder, sliding connection between guide bar and the brush holder, threaded connection between lead screw and the brush holder is provided with the driving motor who installs on the photovoltaic board in the one end of lead screw, driving motor's output shaft and the tip fixed connection of lead screw.
By adopting the technical scheme, the arranged cleaning device can clean the board surface of the photovoltaic board at regular time, and timely clean dust and impurities on the photovoltaic board, so that the photovoltaic board can always improve the generating capacity in a stage of high-efficiency power generation efficiency; the arranged hairbrush can clean dust and impurities on the surface of the photovoltaic panel, and the arranged sponge strip can clean the surface of the photovoltaic panel; the driving assembly can directly utilize the electric power generated by the photovoltaic power plant to drive the driving motor, does not need to additionally provide other driving sources, and enables resources to be utilized to the maximum.
Optionally, the electric wire netting peak regulation control system includes electric wire netting dispatch center and power plant centralized control center, electric wire netting dispatch center carries out real-time scheduling through the online electric quantity in service behavior, gives power plant centralized control center scheduling signal transmission, and power plant centralized control center issues the electric wire netting peak regulation instruction, through control send the electric switch of transformer and power supply system to carry out the electric wire netting peak regulation, and the power supply volume of electrolysis water hydrogen manufacturing system is controlled by power plant centralized control center.
Through adopting above-mentioned technical scheme, the electric wire netting peak shaving control system that sets up can be when the electric wire netting power consumption peak, in time with the electric quantity that photovoltaic power generation station sent and to the electric wire netting, alleviate the pressure of electric wire netting at the power consumption peak greatly.
Optionally, the cooling water waste heat recovery system comprises a water source and a water treatment workshop which are arranged in the photovoltaic power station, the water source is conveyed into the water treatment workshop through a pipeline, a purified water preparation device is arranged in the next procedure of the water treatment workshop, a pretreatment cooling water pipeline is connected between the water treatment workshop and the purified water preparation device, and the purified water preparation device is connected with the electrolyzed water hydrogen production system.
Through adopting above-mentioned technical scheme, the cooling water waste heat recovery system that sets up can handle the water of water source department through the water treatment workshop, prevents that the water in the water source from containing a large amount of impurity to the hydroenergy through the water treatment workshop can be used to in the electrolytic water hydrogen manufacturing system.
Optionally, the pretreatment cooling water pipeline is provided with branch pipelines, the branch pipelines are respectively connected with cooling water supply pipelines of the alkaline aqueous solution electrolytic hydrogen production device, the solid polymer electrolytic hydrogen production device and the high-temperature solid oxide electrolytic hydrogen production device, and a cooling water source is water treated by a water treatment workshop; and cooling water outlet pipelines of the alkaline aqueous solution electrolytic hydrogen production device, the solid polymer electrolytic hydrogen production device and the high-temperature solid oxide electrolytic hydrogen production device are converged with a cooling water return pipeline.
Through adopting above-mentioned technical scheme, be provided with the lateral conduit on preliminary treatment cooling water pipeline, the lateral conduit that sets up can provide the cooling water for alkaline aqueous solution electrolysis hydrogen plant, solid polymer electrolysis hydrogen plant and high temperature solid oxide electrolysis hydrogen plant simultaneously, makes multiple hydrogen plant can produce hydrogen simultaneously, improves the efficiency of hydrogen production.
Optionally, the alkaline aqueous solution electrolysis hydrogen production device is composed of a plurality of monomer electrolysis cells, and each electrolysis cell is composed of a cathode, an anode, a diaphragm and electrolyte.
By adopting the technical scheme, the plurality of monomer electrolytic tanks react independently, and the adjacent monomer electrolytic tanks cannot be influenced.
Optionally, the electrolyte comprises a potassium hydroxide solution, and the concentration of the potassium hydroxide solution is 20wt% to 30 wt%.
By adopting the technical scheme, the potassium hydroxide solution with the concentration can improve the efficiency of hydrogen production.
Optionally, the diaphragm composition comprises asbestos.
By adopting the technical scheme, the asbestos has high tensile strength, high flexibility, chemical and thermal erosion resistance, electrical insulation and spinnability of silicate mineral products.
Optionally, the cathode and the anode comprise metal alloys, and the metal alloys comprise raney nickel and Ni-Mo alloys and are used for decomposing water to generate hydrogen and oxygen.
By adopting the technical scheme, the arranged metal alloy can improve the efficiency of generating hydrogen and oxygen.
Optionally, the solid polymer electrolysis hydrogen production device is composed of a plurality of monomer electrolysis baths.
By adopting the technical scheme, the hydrogen production efficiency of the fixed polymer electrolytic hydrogen production device can be improved under the combined action of the plurality of monomer electrolytic cells.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the combination of the photovoltaic power station and the electrolytic hydrogen production is arranged, so that the photovoltaic power station and the electrolytic hydrogen production can be effectively combined, the electric quantity generated by the photovoltaic power station can be directly transmitted to a power grid during the peak of power utilization, the peak of power utilization of the power grid is relieved, and the electric quantity generated by the photovoltaic power station can be used for electrolytic hydrogen production during the valley of power utilization, so that resources are utilized to the maximum;
2. the arranged cleaning device can clean the plate surface of the photovoltaic plate at regular time, and timely clean dust and impurities on the photovoltaic plate, so that the photovoltaic plate can be frequently in a stage of high-efficiency power generation efficiency, and the power generation capacity is improved; the arranged hairbrush can clean dust and impurities on the surface of the photovoltaic panel, and the arranged sponge strip can clean the surface of the photovoltaic panel; the driving assembly can directly utilize the electric power generated by the photovoltaic power plant to drive the driving motor, and other driving sources are not required to be additionally provided, so that the resources are utilized to the maximum extent;
3. the power grid peak regulation control system can timely supply the electric quantity generated by the photovoltaic power station to the power grid when the power consumption peak of the power grid occurs, and the pressure of the power grid on the power consumption peak is greatly relieved.
Drawings
FIG. 1 is a schematic flow chart diagram of an embodiment of the present application;
fig. 2 is a schematic structural diagram of a cleaning apparatus according to an embodiment of the present application.
Description of reference numerals: 1. a photovoltaic power plant; 2. a water treatment plant; 4. a power grid dispatching center; 5. a centralized control center of the power plant; 6. a power grid peak regulation control system; 7. a booster station; 8. an electric switch; 9. an inverter; 10. an electric steam boiler; 11. an electric superheater; 12. an alkaline aqueous solution electrolysis hydrogen production device; 13. a solid polymer electrolysis hydrogen production device; 14. a high-temperature solid oxide electrolysis hydrogen production device; 15. a high temperature steam delivery line; 16. a purified water preparation device; 17. a water replenishing pump; 18. a water delivery pipeline; 19. a hydrogen washing tank; 20. a hydrogen dehydration tank; 21. a hydrogen buffer tank; 22. a gas pipe network mixing device; 23. a hydrogen compression and filling system; 24. a fuel cell power generation system; 25. existing gas pipe networks; 26. pretreating a cooling water pipeline; 27. a sweeping assembly; 271. a brush; 272. a sponge strip; 28. a drive assembly; 281. a guide bar; 282. a lead screw; 283. the motor is driven.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses a system combining electrolytic hydrogen production and a photovoltaic power station. Referring to fig. 1, the system combining hydrogen production by electrolysis and a photovoltaic power station comprises a power grid peak regulation control system 6, a power transmission and transformation and power supply system, a hydrogen production system by electrolysis, a hydrogen collecting, purifying and external conveying system, a purified water preparation and water supplementing system, a cooling water waste heat recovery system and an electrolytic cell high-temperature steam supply system; the water electrolysis hydrogen production system comprises an alkaline aqueous solution electrolysis hydrogen production device 12, a solid polymer electrolysis hydrogen production device 13 and a high-temperature solid oxide electrolysis hydrogen production device 14.
The power grid peak regulation control system 6 comprises a power grid dispatching center 4 and a power plant centralized control center 5, the power grid dispatching center 4 conducts real-time dispatching through the use condition of the on-grid power, dispatching signals are transmitted to the power plant centralized control center 5, the power plant centralized control center 5 issues power grid peak regulation instructions, power grid peak regulation is conducted through an electric switch 8 which controls a power transmission and transformation and power supply system, and the power supply amount of the electrolyzed water hydrogen production system is controlled by the power plant centralized control center 5.
The cooling water waste heat recovery system includes the water source and carries out the water treatment workshop 2 of preliminary treatment to the water source, and the water source and the cooperation of water treatment workshop 2 and electrolytic water hydrogen production system of setting are used, and water in the water source is handled in carrying water treatment workshop 2 through the pipeline, and the delivery port of water treatment workshop 2 is provided with preliminary treatment cooling water pipeline 26, and preliminary treatment cooling water pipeline 26's other one end can be connected with electrolytic water hydrogen production system.
The pretreatment cooling water pipeline 26 is provided with a plurality of branch pipelines, the branch pipelines are respectively connected with the cooling water supply pipelines of the alkaline aqueous solution electrolytic hydrogen production device 12, the solid polymer electrolytic hydrogen production device 13 and the high-temperature solid oxide electrolytic hydrogen production device 14, the arranged branch pipelines can introduce the cooling water in the water treatment workshop 2 into the electrolytic water hydrogen production system, the water source for cooling the electrolytic water hydrogen production system is the water treated by the water treatment workshop 2, the cooling water outlet pipelines of the alkaline aqueous solution electrolytic hydrogen production device 12, the solid polymer electrolytic hydrogen production device 13 and the high-temperature solid oxide electrolytic hydrogen production device 14 are converged with the cooling water return pipeline, and the mixed water can flow back to the water treatment workshop 2 to realize the reuse of the water resource.
The purified water preparation and water supplement system comprises a purified water preparation device 16, a water supplement pump 17 and a water supply pipeline 18, water treated in the water treatment workshop 2 flows into the purified water preparation device 16 through a pretreatment cooling water pipeline 26, the purified water preparation device 16 purifies water in the water treatment workshop 2 and pressurizes the water through the water supplement pump 17, so that the purified water enters the electrolytic water hydrogen production system through the water supply pipeline 18, an outlet of the water supply pipeline 18 is respectively connected with a water inlet of the alkaline aqueous solution electrolytic hydrogen production device 12, a water inlet of the solid polymer electrolytic hydrogen production device 13 and a water inlet of the high-temperature solid oxide electrolytic hydrogen production device 14, and the water processed by the purified water preparation device 16 can enter the electrolytic water hydrogen production system, so that the purity of the processed hydrogen meets the national standard requirement and the generation of impurities is reduced.
The alkaline aqueous solution electrolytic hydrogen production device 12 consists of a plurality of monomer electrolytic cells, and each electrolytic cell consists of a cathode, an anode, a diaphragm and electrolyte; the electrolyte comprises a potassium hydroxide solution with the concentration of 20-30 wt%; the diaphragm comprises asbestos; the cathode and the anode comprise metal alloys including Raney nickel and Ni-Mo alloy, and are used for decomposing water to generate hydrogen and oxygen.
The solid polymer electrolytic hydrogen production device 13 is composed of a plurality of monomer electrolytic cells, and the electrolytic cells use solid polymer membranes as electrolytes.
The electrolytic cell high-temperature steam supply system comprises an electric steam boiler 10, an electric superheater 11 and a high-temperature steam conveying pipeline 15, wherein a steam inlet of the electric superheater 11 is connected with a steam outlet of the electric steam boiler 10, and a steam outlet of the electric superheater 11 is connected with an inlet of the high-temperature steam conveying pipeline 15.
The high-temperature steam inlet of the high-temperature solid oxide electrolysis device is connected with the outlet of the high-temperature steam conveying pipeline 15, 500600 ℃ low-temperature steam in the electric steam boiler 10 enters the electric high-temperature superheater and is overheated to more than 800 ℃ through the electric-high-temperature superheater, and the high-temperature solid oxide electrolysis hydrogen production device 14 is composed of a plurality of monomer electrolytic cells. The working temperature of the high-temperature solid oxide electrolytic hydrogen production device 1414 is 800-950 ℃.
The power transmission and transformation and power supply system comprises a plurality of photovoltaic panels arranged in a photovoltaic power plant 1, a step-down transformer arranged in a power transmission grid, an inverter 9 and an electric switch 8, wherein an interval is newly added on an output line bus of the photovoltaic power plant, the electric switch 8 is connected with the step-down transformer and the inverter 9 through the power transmission grid, and the other ends of the step-down transformer and the inverter 9 are connected with the hydrogen production system by using electrolyzed water.
The cleaning device for cleaning the photovoltaic panel is arranged on the photovoltaic panel and comprises a cleaning assembly 27 arranged on the panel surface of the photovoltaic panel and a driving assembly 28 capable of driving the cleaning assembly 27 to slide; clean subassembly 27 including along the gliding brush holder of photovoltaic board length direction and fixed connection brush 271 and sponge strip 272 on the brush holder, the length direction of brush holder is the same with the width direction of photovoltaic board, brush 271 and sponge strip 272 fixed connection are on the brush holder towards photovoltaic board one side on the surface, the length direction of brush 271 and sponge strip 272 is the same with the length direction of brush holder, the one side that the brush holder was kept away from to brush 271 and sponge strip 272 and the face butt of photovoltaic board, the brush 271 of setting can clean dust and impurity on the photovoltaic board face, the sponge strip 272 of setting can clean the photovoltaic board face.
The driving assembly 28 includes a guide rod 281 and a lead screw 282 symmetrically disposed on two sides of the photovoltaic panel, and a driving motor 283 for driving the lead screw 282 to rotate, the length direction of the guide rod 281 and the lead screw 282 is the same as the length direction of the photovoltaic panel, and the guide rod 281 and the lead screw 282 are rotatably disposed on the photovoltaic panel, the guide rod 281 and the lead screw 282 are disposed at two ends of the brush handle, and both of them pass through the brush handle, the lead screw 282 is in threaded connection with the brush handle, the brush handle is in sliding connection with the guide rod 281, and the brush handle can slide along the length direction of the guide rod 281, the driving motor 283 is disposed at one end of the lead screw 282 and is fixedly connected to one end of the photovoltaic panel, an output shaft of the driving motor 283 is fixedly connected to an end of the lead screw 282, and after the driving motor 283 is started, the brush handle can.
At the photovoltaic board of outdoor setting, long-time use back, the face of photovoltaic board is gone up to the back and is covered a large amount of dusts and can adsorb some impurity, and dust and impurity on the photovoltaic board can influence the generating efficiency of photovoltaic board greatly, and the cleaning device who sets up can regularly clear up the face of photovoltaic board, in time clears up dust and impurity on the photovoltaic board, makes the photovoltaic board can often improve the generated energy to the stage that is in high-efficient generating efficiency.
The hydrogen collecting, purifying and outward transporting system comprises a hydrogen washing tank 19, a hydrogen dehydration tank 20, a hydrogen buffer tank 21, a gas pipe network mixing device 22, a hydrogen compressing and filling system 23 and a fuel cell power generation system 24. The outlet of the hydrogen washing tank 19 is connected with the inlet of a hydrogen dehydration tank 20, the inlet of the hydrogen dehydration tank 20 is connected with the outlet of a hydrogen buffer tank 21, and the outlet of the hydrogen buffer tank 21 is respectively connected with at least one of a gas pipe network mixing device 22, a hydrogen compression and filling system 23 and a fuel cell power generation system 24. The gas pipe network mixing device 22 is connected with the existing gas pipe network 25 or a long-distance natural gas conveying pipeline, and the hydrogen mixing proportion of the gas pipe network mixing device 22 is less than 20%. The fuel cell power generation system 24 includes a large-scale fuel cell power plant that generates electric power using hydrogen gas as fuel, or a vehicle-mounted fuel cell for a fuel cell vehicle using hydrogen energy as fuel.
The implementation principle of the system combining electrolytic hydrogen production and a photovoltaic power station in the embodiment of the application is as follows: through combining together electrolysis hydrogen production and photovoltaic power plant 1's flexibility peak shaving, during the electric wire netting power consumption low ebb, the intelligent adjustment electric quantity of surfing the net, utilize the electric energy hydrogen production that photovoltaic power plant 1 produced, electric wire netting power consumption peak, the electric energy that photovoltaic power plant 1 produced is connected to the electric wire netting through the transmission of electricity pipe network, can alleviate the electric wire netting pressure of power consumption peak period, provides valuable peak shaving load for the electric wire netting. Meanwhile, in summer, the electrolytic hydrogen production by the photovoltaic power plant 1 consumes the electric energy of the electricity consumption valley, effectively solves the defect that the peak regulation can only be realized by heat supply in winter, and meets the peak regulation requirement all the year round; the water source provides a cooling water source for the hydrogen production process by electrolysis, and the cooling water discharged by the hydrogen production system is collected and flows back to the water treatment workshop 2, so that the recycling of the water source water is realized, and the utilization rate of the water resource is improved; in addition, the water treated by the water treatment workshop 2 is heated by the electric steam boiler 10 and the electric superheater 11, the photovoltaic power generation plant 1 and the electrolytic hydrogen production process are efficiently coupled, a large amount of discarded photovoltaic power generation electric quantity is fully utilized, the utilization of the wasted photovoltaic power generation electric quantity is realized, and the waste photovoltaic power generation electric quantity is conveniently stored, transported and used in a hydrogen energy mode.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (10)
1. The utility model provides a system that electrolytic hydrogen production and photovoltaic power generation station combine, includes electric wire netting peak regulation control system (6), send the transform and power supply system, electrolytic water hydrogen production system, hydrogen are collected and are purified and external conveying system and pure water preparation and water charging system, its characterized in that: the system also comprises a cooling water waste heat recovery system and an electrolytic cell high-temperature steam supply system;
the power transmission, transformation and power supply system is connected with the photovoltaic power station, the power transmission, transformation and power supply system is arranged on a bus of an output line of the photovoltaic power station, a step-down transformer and an inverter (9) are arranged on the bus of the output line of the photovoltaic power station, an electric switch (8) is further arranged on the output line between the step-down transformer and the inverter (9) and the photovoltaic power station, and one ends of the step-down transformer and the inverter (9) far away from the electric switch (8) are connected with the electrolyzed water hydrogen production system;
the photovoltaic power station comprises a plurality of photovoltaic panels which are arranged in parallel;
the water electrolysis hydrogen production system comprises an alkaline aqueous solution electrolysis hydrogen production device (12), a solid polymer electrolysis hydrogen production device (13) and a high-temperature solid oxide electrolysis hydrogen production device (14).
2. A system for the combined production of hydrogen by electrolysis and a photovoltaic power plant according to claim 1, characterized in that: the cleaning device is arranged on the surface of the photovoltaic panel and comprises a cleaning assembly (27) arranged on the surface of the photovoltaic panel in a sliding mode and a driving assembly (28) for driving the cleaning assembly (27) to slide;
the cleaning assembly (27) comprises a brush handle arranged above the surface of the photovoltaic panel, the brush handle is arranged along the width direction of the photovoltaic panel, and the side of the brush handle facing the photovoltaic panel is fixedly connected with a brush (271) and a sponge strip (272) which are arranged along the length direction of the brush handle;
the driving assembly (28) comprises a guide rod (281) and a lead screw (282) which are symmetrically and rotatably arranged on two sides of the photovoltaic panel, the length direction of the guide rod (281) and the length direction of the lead screw (282) are the same as that of the photovoltaic panel, the guide rod (281) and the lead screw (282) penetrate through the end portion of the brush holder, the guide rod (281) is in sliding connection with the brush holder, the lead screw (282) is in threaded connection with the brush holder, a driving motor (283) installed on the photovoltaic panel is arranged at one end of the lead screw (282), and the output shaft of the driving motor (283) is fixedly connected with the end portion of the lead screw (282).
3. A system for the combined production of hydrogen by electrolysis and a photovoltaic power plant according to claim 1, characterized in that: the power grid peak regulation control system (6) comprises a power grid dispatching center (4) and a power plant centralized control center (5), the power grid dispatching center (4) conducts real-time dispatching through the use condition of the on-grid power, dispatching signals are transmitted to the power plant centralized control center (5), the power plant centralized control center (5) issues a power grid peak regulation instruction, and through control, power transmission and transformation and power supply system's electric switch (8) conducts power grid peak regulation, and the power supply amount of the electrolyzed water hydrogen production system is controlled by the power plant centralized control center (5).
4. A system for the combined production of hydrogen by electrolysis and a photovoltaic power plant according to claim 1, characterized in that: the cooling water waste heat recovery system comprises a water source and a water treatment workshop (2) which are arranged in a photovoltaic power station, wherein the water source is conveyed into the water treatment workshop (2) through a pipeline, a purified water preparation device (16) is arranged in the next procedure of the water treatment workshop (2), a pretreatment cooling water pipeline (26) is connected between the water treatment workshop (2) and the purified water preparation device (16), and the purified water preparation device (16) is connected with an electrolyzed water hydrogen production system.
5. An electrolytic hydrogen production and photovoltaic power plant combined system according to claim 4, characterized in that: the pretreatment cooling water pipeline (26) is provided with branch pipelines which are respectively connected with cooling water supply pipelines of the alkaline aqueous solution electrolytic hydrogen production device (12), the solid polymer electrolytic hydrogen production device (13) and the high-temperature solid oxide electrolytic hydrogen production device (14), and the cooling water source is water treated by the water treatment workshop (2); and cooling water outlet pipelines of the alkaline aqueous solution electrolytic hydrogen production device (12), the solid polymer electrolytic hydrogen production device (13) and the high-temperature solid oxide electrolytic hydrogen production device (14) are converged with a cooling water return pipeline.
6. A system for the combined production of hydrogen by electrolysis and a photovoltaic power plant according to claim 1, characterized in that: the alkaline aqueous solution electrolytic hydrogen production device (12) is composed of a plurality of monomer electrolytic cells, and each electrolytic cell is composed of a cathode, an anode, a diaphragm and electrolyte.
7. An electrolytic hydrogen production and photovoltaic power plant integrated system according to claim 6, characterized in that: the electrolyte comprises a potassium hydroxide solution, and the concentration of the potassium hydroxide solution is 20-30 wt%.
8. An electrolytic hydrogen production and photovoltaic power plant integrated system according to claim 6, characterized in that: the diaphragm component comprises asbestos.
9. An electrolytic hydrogen production and photovoltaic power plant integrated system according to claim 6, characterized in that: the cathode and the anode comprise metal alloys, and the metal alloys comprise Raney nickel and Ni-Mo alloys and are used for decomposing water to generate hydrogen and oxygen.
10. A system for the combined production of hydrogen by electrolysis and a photovoltaic power plant according to claim 1, characterized in that: the solid polymer electrolysis hydrogen production device (13) consists of a plurality of monomer electrolytic tanks.
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