CN115354347A - Water circulation system - Google Patents
Water circulation system Download PDFInfo
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- CN115354347A CN115354347A CN202211076104.1A CN202211076104A CN115354347A CN 115354347 A CN115354347 A CN 115354347A CN 202211076104 A CN202211076104 A CN 202211076104A CN 115354347 A CN115354347 A CN 115354347A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 219
- 239000001257 hydrogen Substances 0.000 claims abstract description 139
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 139
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 126
- 239000002918 waste heat Substances 0.000 claims abstract description 89
- 239000007789 gas Substances 0.000 claims abstract description 78
- 238000002485 combustion reaction Methods 0.000 claims abstract description 48
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 238000003860 storage Methods 0.000 claims description 51
- 238000000746 purification Methods 0.000 claims description 18
- 238000011033 desalting Methods 0.000 claims description 15
- 150000002431 hydrogen Chemical class 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 5
- 238000009833 condensation Methods 0.000 claims description 2
- 230000005494 condensation Effects 0.000 claims description 2
- 230000003020 moisturizing effect Effects 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 16
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- 238000010612 desalination reaction Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000010248 power generation Methods 0.000 description 3
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000000498 cooling water Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
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- 230000002035 prolonged effect Effects 0.000 description 1
- 238000011403 purification operation Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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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
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- 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
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
- C25B15/085—Removing impurities
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/08—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/22—Methods of steam generation characterised by form of heating method using combustion under pressure substantially exceeding atmospheric pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B33/00—Steam-generation plants, e.g. comprising steam boilers of different types in mutual association
- F22B33/18—Combinations of steam boilers with other apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/36—Water and air preheating systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D11/00—Feed-water supply not provided for in other main groups
- F22D11/02—Arrangements of feed-water pumps
- F22D11/06—Arrangements of feed-water pumps for returning condensate to boiler
-
- 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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Supply & Treatment (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Inorganic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The invention relates to the technical field of energy utilization, in particular to a water circulation system, which comprises: a gas turbine; the after-burning type waste heat boiler is connected with the gas turbine; the steam output by the gas turbine enters the after-burning type waste heat boiler, is mixed with the steam in the after-burning type waste heat boiler and heats circulating feed water, so that the steam enters the steam turbine to do work; the water electrolysis device is connected with the gas turbine and the afterburning type waste heat boiler and is used for electrolyzing liquid water discharged by the gas turbine and the afterburning type waste heat boiler to generate hydrogen and conveying the hydrogen to the gas turbine and the afterburning type waste heat boiler through pipelines; the water electrolysis device electrolyzes water to generate hydrogen and provides fuel for the gas turbine and the afterburning type waste heat boiler; the flow rate of the water vapor is increased, the temperature of the water vapor is increased and the heat exchange is enhanced through the hydrogen afterburning; by recycling hydrogen and water, a large amount of hydrogen is provided for an internal combustion engine and a afterburning type waste heat boiler of a power plant, carbon emission is reduced, and the environment-friendly effect is remarkable; saving water resource and fuel and reducing cost.
Description
Technical Field
The invention relates to the technical field of energy utilization, in particular to a water circulation system.
Background
Compared with the traditional coal-fired power plant, the gas-steam combined cycle power plant has the advantages of small pollution, high unit efficiency, quick response and the like, is widely applied at present, and still has the problem of high carbon emission.
In recent years, hydrogen energy is rapidly developed due to the advantages of cleanness, environmental protection, sustainable utilization and the like, and has very good application and development prospects along with the continuous improvement of technologies such as hydrogen preparation, storage, transportation and the like.
However, in existing power plants, hydrogen is often continuously transported from a hydrogen producer to the power plant by means of hydrogen transport vehicles. The combustion of the combustion engine in the power plant needs a large amount of hydrogen, the transportation volume of the hydrogen transportation vehicle is limited, the transportation cost is high, and the combustion engine requirement in the power plant is difficult to meet.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect of the prior art that the hydrogen amount in the power plant cannot meet the requirement of the internal combustion engine of the power plant, and based on the above situation, it is necessary to develop a system for providing a large amount of hydrogen in the power plant.
In order to achieve the above object, the present invention provides a water circulation system including:
a gas turbine having a first hydrogen inlet;
the after-burning type waste heat boiler is connected with the gas turbine and is provided with a second hydrogen inlet; the steam output by the gas turbine enters the after-combustion type waste heat boiler, is mixed with the steam generated by burning the after-combustion hydrogen in the after-combustion type waste heat boiler, heats the circulating feed water in the after-combustion type waste heat boiler after being uniformly mixed, and makes the circulating feed water become steam and then enters the steam turbine to do work;
and the water electrolysis device is connected with the gas turbine and the afterburning type waste heat boiler and is used for receiving the liquid water discharged by the gas turbine and the afterburning type waste heat boiler, electrolyzing the liquid water to generate hydrogen, and delivering the hydrogen generated by electrolysis to the gas turbine and the afterburning type waste heat boiler again through pipelines.
Optionally, the method further comprises:
the heat supply device is arranged between the afterburning type waste heat boiler and the water electrolysis device and is connected with the gas turbine; the device is used for receiving liquid water discharged by the afterburning type waste heat boiler, preheating hydrogen generated by the water electrolysis device by using the discharged liquid water, and conveying the preheated hydrogen to the gas turbine and the afterburning type waste heat boiler for combustion.
Optionally, the method further comprises:
and the first hydrogen storage device is connected with the water electrolysis device and is used for storing hydrogen.
Optionally, the method further comprises:
and the second hydrogen storage device is connected with the first hydrogen storage device and the heat supply device.
Optionally, the method further comprises:
the condenser and the condensate pump are connected with the steam turbine;
the condensing pump is also connected with the after-combustion type waste heat boiler.
Optionally, the method further comprises:
and the water storage tank is connected with the gas turbine, the afterburning type waste heat boiler, the heat supply device and the water electrolysis device and is used for storing liquid water after the gas turbine and the heat supply device are utilized and supplementing water for the gas turbine, the afterburning type waste heat boiler and the water electrolysis device.
Optionally, the method further comprises:
the water purification device is connected with the water storage tank and is used for purifying liquid water entering the water storage tank;
and the desalting device is connected with the water purification device and is used for desalting the liquid water entering the water purification device.
Optionally, the method further comprises:
the dryer is connected with the water electrolysis device and is used as a preorder device for hydrogen purification and used for removing moisture entrained in the hydrogen;
and the hydrogen processor is connected with the dryer, the gas turbine and the afterburning type waste heat boiler and is used for purifying the hydrogen entering the gas turbine and the afterburning type waste heat boiler.
Optionally, the method further comprises:
and the hydrogen control module is connected with the gas turbine, the afterburning type waste heat boiler and the water electrolysis device and is used for adjusting the flow, the temperature and the pressure of hydrogen supply.
Optionally, the method further comprises:
and the water processor is arranged between the after-combustion type waste heat boiler and the heat supply device and is used for desalting and filtering the liquid water entering the heat supply device.
Compared with the prior art, the technical scheme of the invention has the following advantages:
1. the invention provides a water circulation system, comprising: a gas turbine having a first hydrogen inlet; the afterburning type waste heat boiler is connected with the gas turbine and is provided with a second hydrogen inlet; the steam output by the gas turbine enters the after-combustion type waste heat boiler, is mixed with the steam generated by burning the after-combustion hydrogen in the after-combustion type waste heat boiler, and heats the circulating feed water in the after-combustion type waste heat boiler after being uniformly mixed, so that the circulating feed water is changed into steam and enters the steam turbine to do work; the water electrolysis device is connected with the gas turbine and the afterburning type waste heat boiler and is used for receiving liquid water discharged by the gas turbine and the afterburning type waste heat boiler, electrolyzing the liquid water to generate hydrogen, and delivering the hydrogen generated by electrolysis to the gas turbine and the afterburning type waste heat boiler again through pipelines; according to the technical scheme, water is electrolyzed through a water electrolysis device to generate hydrogen, fuel is provided for a gas turbine and an after-burning type waste heat boiler, high-temperature steam in the after-burning type waste heat boiler is used for heating low-temperature steam output by the gas turbine, and circulating feed water in the after-burning type waste heat boiler is changed into a high-energy working medium through heat exchange to push the steam turbine to do work; moreover, by arranging the afterburning type waste heat boiler, the flow rate of the steam can be increased, the temperature of the steam can be increased, and the work-doing capacity can be enhanced; meanwhile, a large amount of hydrogen is provided for a combustion engine and a afterburning type waste heat boiler in a power plant by recycling the hydrogen and the water, so that the carbon emission is reduced, and the obvious environment-friendly effect is achieved; but also saves water resource and fuel cost, reduces production cost and improves the economic benefit of the power plant.
2. The water circulation system provided by the invention also comprises: the heat supply device is arranged between the afterburning type waste heat boiler and the water electrolysis device and is connected with the gas turbine; the system is used for receiving liquid water discharged by the afterburning type waste heat boiler, preheating hydrogen generated by a water electrolysis device by using the discharged liquid water, and conveying the preheated hydrogen to a gas turbine and the afterburning type waste heat boiler; this application adopts above-mentioned technical scheme, and required hydrogen is preheated in advance to make full use of after-combustion type exhaust-heat boiler exhaust high temperature liquid water, not only saves the hydrogen consumption, makes the burning of hydrogen more abundant moreover, improves after-combustion type exhaust-heat boiler and gas turbine's operating efficiency.
3. The water circulation system provided by the invention also comprises: the first hydrogen storage device is connected with the water electrolysis device and is used for storing hydrogen; this application adopts above-mentioned technical scheme, through setting up first hydrogen storage device, can save unnecessary hydrogen, for next time gas turbine and afterburning type exhaust-heat boiler's operation makes preparation, improves gas turbine and afterburning type exhaust-heat boiler's operating efficiency.
4. The water circulation system provided by the invention also comprises: the second hydrogen storage device is connected with the first hydrogen storage device and the heat supply device; according to the technical scheme, the second hydrogen storage device is arranged, so that hydrogen can be supplied or reserved.
5. The water circulation system provided by the invention also comprises: a condenser and a condensate pump connected with the steam turbine; the condensing pump is also connected with the after-burning type waste heat boiler; this application is through setting up condenser and condensate pump, and the vapor condensation in with steam turbine becomes liquid water, and will liquid water carries to after combustion type exhaust-heat boiler in, continues to utilize, plays the effect of water economy resource.
6. The water circulation system provided by the invention also comprises: the water storage tank is connected with the gas turbine, the afterburning type waste heat boiler, the heat supply device and the water electrolysis device, and is used for storing liquid water utilized by the gas turbine and the heat supply device and supplementing water for the gas turbine, the afterburning type waste heat boiler and the water electrolysis device; this application technical scheme is through setting up the water storage tank, collects the liquid water that stores in the water circulation system to for the water electrolysis device provides liquid water, in the water economy resource, make whole hydrologic cycle can reliably operate steadily.
7. The water circulation system provided by the invention also comprises: the water purification device is connected with the water storage tank and is used for purifying liquid water entering the water storage tank; the desalting device is connected with the water purification device and is used for desalting the liquid water entering the water purification device; by adopting the technical scheme, the purity of water is ensured to meet the requirement of hydrogen production by electrolyzing water.
8. The water circulation system provided by the invention also comprises: the dryer is connected with the water electrolysis device and is used as a preorder device for hydrogen purification and used for removing water included in the hydrogen; the hydrogen processor is connected with the dryer, the gas turbine and the afterburning type waste heat boiler and is used for purifying hydrogen entering the gas turbine and the afterburning type waste heat boiler; this application adopts above-mentioned technical scheme, ensures that the purity of hydrogen satisfies gas turbine and afterburning type exhaust-heat boiler's operation requirement.
9. The water circulation system provided by the invention also comprises: the hydrogen control module is connected with the gas turbine, the afterburning type waste heat boiler and the water electrolysis device and is used for adjusting the flow, the temperature and the pressure of hydrogen supply; this application adopts above-mentioned technical scheme, through setting up hydrogen control module, according to the business turn over parameter of gas turbine operating mode, hydrogen and the business turn over parameter of circulating water, adjusts flow, temperature and pressure etc. that the hydrogen supplied with, ensures water circulating system's normal operating.
10. The water circulation system provided by the invention also comprises: the water treatment device is arranged between the after-combustion type waste heat boiler and the heat supply device and is used for desalting and filtering liquid water entering the heat supply device; according to the technical scheme, the water treatment device is arranged, so that liquid water is desalted and filtered, the liquid water is prevented from blocking or damaging the heat supply device, the normal operation of the heat supply device is guaranteed, and the service life of the heat supply device is prolonged.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a connection structure of a water circulation system according to an embodiment of the present invention.
Description of reference numerals:
1. a gas turbine; 2. a supplementary combustion type waste heat boiler; 3. a water treatment device; 4. a heating device; 5. a desalting device; 6. a water purification device; 7. a water storage tank; 8. a water electrolysis device; 9. a dryer; 10. a hydrogen processor; 11. a first hydrogen storage device; 12. a second hydrogen storage device; 13. a hydrogen control module; 14. a condenser; 15. a condensate pump; 16. a steam turbine.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood 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.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.
Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
One embodiment of the water circulation system, as shown in fig. 1, comprises: the system comprises a gas turbine 1, a afterburning type waste heat boiler 2, a water treater 3, a heat supply device 4, a water electrolysis device 8, a dryer 9, a hydrogen treater 10, a first hydrogen storage device 11, a hydrogen control module 13, a desalting device 5, a water purification device 6, a water storage tank 7 and the like, which are sequentially connected.
The gas turbine 1 has a first hydrogen inlet; the after-burning type waste heat boiler 2 is provided with a second hydrogen inlet; high-temperature and high-pressure steam output by the combustion chamber of the gas turbine 1 pushes a turbine to do work to drive a generator to work, the steam after utilization enters the after-combustion type waste heat boiler 2 and is mixed with high-temperature steam generated by after-combustion hydrogen combustion in the after-combustion type waste heat boiler 2, and after the steam is uniformly mixed, the steam and circulating feed water in the after-combustion type waste heat boiler 2 exchange heat through a heat exchanger, so that the circulating feed water enters a steam turbine 16 to do work after being heated to become steam, and the generator is driven to work; specifically, the heat exchanger is a compact heat exchanger, so that the internal pressure of the after-combustion type waste heat boiler 2 can be prevented from being too high during operation, and safety accidents can be prevented.
The water electrolysis device 8 is connected with the gas turbine 1 and the afterburning type waste heat boiler 2 and is used for receiving liquid water discharged by the gas turbine 1 and the afterburning type waste heat boiler 2 and electrolyzing the liquid water to generate hydrogen, and the hydrogen generated by electrolysis is conveyed to the gas turbine 1 and the afterburning type waste heat boiler 2 through pipelines again to be used as fuel of the gas turbine 1 and the afterburning type waste heat boiler 2, and is the afterburning hydrogen for the afterburning type waste heat boiler 2. Specifically, the water electrolysis device 8 is connected with the gas turbine 1 through the desalination device 5, the water purification device 6, the water storage tank 7, the electromagnetic valve and the water pump which are connected in sequence, so as to receive the liquid water of the gas turbine 1. The after-burning type exhaust-heat boiler 2 is connected with a water inlet pipeline of the desalting device 5 through a water treatment device 3 and a heat supply device 4 which are connected in sequence, and then is connected with a water electrolysis device 8 through the desalting device 5, a water purification device 6, a water storage tank 7, an electromagnetic valve and a water pump which are connected in sequence. Specifically, the water treatment device 3 is used for desalting and filtering liquid water entering the heat supply device 4. The water purification device 6 can adopt one or more methods of a membrane distillation method, a filtration method, an ion exchange method and the like for coupling, and ensures that the purity of water meets the requirement of hydrogen production by electrolyzing water. The hydrogen processor 10 is used for purifying hydrogen, and can adopt one or more modes of a physical or chemical absorption method, a chemical reaction method, a pressure swing adsorption separation method, a low-temperature separation method, a polymer membrane separation method, a low-temperature adsorption method and a palladium membrane separation method for coupling, so as to ensure that the purity of the hydrogen meets the use requirements of the gas turbine 1 and the afterburning type waste heat boiler 2.
The high-temperature liquid water in the after-combustion type waste heat boiler 2 utilizes waste heat in the heat supply device 4. The waste heat can not only preheat hydrogen, but also adopt waste heat for heating, and can adopt heat supply technologies such as absorption heat pumps and compression heat pumps, and the like, thereby having good energy-saving effect.
After the after-combustion type waste heat boiler 2 is subjected to hydrogenation and after-combustion, the flow and the temperature of the water vapor in the water circulation system are obviously increased, so that more heat can be absorbed by the circulating feed water, the working capacity of the circulating feed water is enhanced, and the power generation efficiency of the steam turbine 16 is further improved; meanwhile, the working capacity of the heat supply device 4 is also obviously improved due to the large flow of the water vapor.
The pipeline between the first hydrogen storage device 11 and the hydrogen control module 13 passes through the heating device 4 so as to preheat hydrogen; specifically, the first hydrogen storage device 11 is a hydrogen storage tank. And the hydrogen control module 13 is connected with the gas turbine 1 and the afterburning type waste heat boiler 2 and is used for adjusting the flow, the temperature and the pressure of hydrogen supply. Further, a pressure reducing valve and an electromagnetic valve which are connected in sequence are arranged on a pipeline for connecting the first hydrogen storage device 11 and the heat supply device 4; and the pipeline connected with the first hydrogen storage device 11 and the heat supply device 4 is connected with three second hydrogen storage devices 12 in parallel, and the pipeline connected with each second hydrogen storage device 12 is provided with a pressure reducing valve and an electromagnetic valve which are connected in sequence. Specifically, the second hydrogen storage device 12 is a hydrogen unloading column. Furthermore, after the heat supply device 4 is connected with the gas turbine 1, the heat supply device is connected to a water inlet pipeline of the desalination device 5, and the water inlet pipeline is used for receiving liquid water discharged by the gas turbine 1 and the heat supply device 4.
And the steam turbine 16 is connected with the after-combustion type waste heat boiler 2 through a condenser 14 and a condensing pump 15 which are connected in sequence. The water storage tank 7 is also connected with the gas turbine 1 through an electromagnetic valve and a water pump which are sequentially connected, and is used for supplementing cooling water required by a combustion chamber of the gas turbine 1 and avoiding excessive thermal nitrogen oxides generated by overhigh combustion temperature; and the water storage tank 7 is also connected with a condenser 14 through an electromagnetic valve and a water pump which are connected in sequence, and is used for supplementing circulating water supply reduced due to dissipation and the like.
The application of the water circulation system is briefly described as follows: when the water circulation system is put into operation for the first time, hydrogen required for combustion of the gas turbine 1 and the afterburning type waste heat boiler 2 can be provided by the hydrogen unloading column, when the hydrogen generated by the water electrolysis device 8 is enough for the water circulation system to continuously operate under full load and the water stored in the water storage tank 7 is enough for the water circulation system to normally operate, the hydrogen supply of the hydrogen unloading column is stopped, and the water circulation system can normally operate only by the hydrogen supply of the water electrolysis device 8; or before the first operation, liquid water is actively added into the water storage tank 7 in advance, and sufficient hydrogen is generated by the water electrolysis device 8 for subsequent use; further, the above two methods may be combined. When the power generation task is finished in the day, a proper amount of hydrogen can be prepared in advance through the water electrolysis device 8 and stored in the hydrogen storage tank to prepare for next power generation of the water circulation system.
When the water circulation system operates normally, hydrogen enters the gas turbine 1 to be combusted, high-temperature and high-pressure steam is generated, work is applied in the turbine, and the generator is driven to generate electricity. The steam exhausted by the turbine enters the after-combustion type waste heat boiler 2, is mixed with high-temperature steam generated by burning of after-combustion hydrogen, and then is subjected to full heat exchange with circulating feed water in the after-combustion type waste heat boiler 2, so that the steam is converted into steam and enters the steam turbine 16 to do work, and the generator is driven to generate power. The water vapor is changed into high-temperature liquid water after heat exchange, flows into the heat supply device 4 after treatment to preheat hydrogen, and finally utilizes the residual heat for heating. After the waste heat is used up, the liquid water discharged from the heat supply device 4 and the liquid water discharged from the gas turbine 1 are collected together, subjected to desalination and purification operations, and then stored in the water storage tank 7 to supplement the circulating feed water to the after-combustion type waste heat boiler 2, supplement the cooling water to the combustion chamber of the gas turbine 1, and supply a water source to the water electrolysis device 8. Hydrogen generated by the water electrolysis device 8 flows into a hydrogen storage tank through a dryer 9 and a hydrogen processor 10 in sequence; hydrogen in the hydrogen storage tank flows into the heating device 4 for preheating through a pressure reducing valve and an electromagnetic valve in sequence; the preheated hydrogen enters the hydrogen control module 13, and then is delivered to the gas turbine 1 and the afterburning type waste heat boiler 2 in a split-flow manner through the hydrogen control module 13, and finally is used for combustion of the gas turbine 1 and the afterburning type waste heat boiler 2. When the water quantity or the hydrogen quantity in the water circulation system is slightly reduced due to the functions of dissipation and the like, proper water quantity can be actively supplemented into the water storage tank 7; when the water quantity or hydrogen quantity in the water circulation system is obviously insufficient and the production task is urgent, a proper amount of hydrogen can be continuously supplemented into the hydrogen unloading column, and meanwhile, a proper amount of water is actively supplemented into the water storage tank 7, so that the normal operation of the water circulation system is ensured. Wherein, the parameters such as the number and the volume of the main storage devices such as the water storage tank 7, the first hydrogen storage device 11, the second hydrogen storage device 12 and the like can be properly adjusted according to the scale of the water circulation system and the use requirement; the number, the work capacity, the connection mode and the like of the water electrolysis device 8, the dryer 9, the hydrogen processor 10, the desalting device 5, the water purification device 6 and the like can be properly selected according to the scale and the use requirement of the water circulation system before the construction of the water circulation system.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the spirit or scope of the invention.
Claims (10)
1. A water circulation system, comprising:
a gas turbine (1) having a first hydrogen inlet;
the afterburning type waste heat boiler (2) is connected with the gas turbine (1) and is provided with a second hydrogen inlet; the steam output by the gas turbine (1) enters the after-combustion type waste heat boiler (2) and is mixed with the steam generated by the combustion of the after-combustion hydrogen in the after-combustion type waste heat boiler (2), and after being uniformly mixed, the circulating feed water in the after-combustion type waste heat boiler (2) is heated, so that the circulating feed water is changed into steam and then enters a steam turbine (16) to do work;
and the water electrolysis device (8) is connected with the gas turbine (1) and the afterburning type waste heat boiler (2) and is used for receiving liquid water discharged by the gas turbine (1) and the afterburning type waste heat boiler (2) and electrolyzing the liquid water to generate hydrogen, and the hydrogen generated by electrolysis is conveyed to the gas turbine (1) and the afterburning type waste heat boiler (2) again through pipelines.
2. The water circulation system of claim 1, further comprising:
the heat supply device (4) is arranged between the afterburning type waste heat boiler (2) and the water electrolysis device (8) and is connected with the gas turbine (1); the device is used for receiving liquid water discharged by the after-burning type waste heat boiler (2), preheating hydrogen generated by the water electrolysis device (8) by using the discharged liquid water, and conveying the preheated hydrogen to the gas turbine (1) and the after-burning type waste heat boiler (2) for combustion.
3. The water circulation system of claim 2, further comprising:
a first hydrogen storage means (11) connected to the water electrolysis means (8) for storing hydrogen.
4. The water circulation system of claim 3, further comprising:
and the second hydrogen storage device (12) is connected with the first hydrogen storage device (11) and the heat supply device (4).
5. The water circulation system according to any one of claims 1 to 4, further comprising:
a condenser (14) and a condensate pump (15) connected to the steam turbine (16);
the condensation pump (15) is also connected with the after-burning type waste heat boiler (2).
6. The water circulation system according to any one of claims 2 to 4, further comprising:
water storage tank (7), with gas turbine (1), afterburning type exhaust-heat boiler (2), heating device (4), water electrolysis device (8) are all connected for store the liquid water after gas turbine (1) and heating device (4) utilize, and do gas turbine (1), afterburning type exhaust-heat boiler (2) and water electrolysis device (8) moisturizing.
7. The water circulation system of claim 6, further comprising:
the water purification device (6) is connected with the water storage tank (7) and is used for purifying the liquid water entering the water storage tank (7);
and the desalting device (5) is connected with the water purification device (6) and is used for desalting the liquid water entering the water purification device (6).
8. The water circulation system according to any one of claims 1 to 4, further comprising:
the dryer (9) is connected with the water electrolysis device (8) and is used as a pre-purification device of the hydrogen and used for removing moisture included in the hydrogen;
and the hydrogen processor (10) is connected with the dryer (9), the gas turbine (1) and the afterburning type waste heat boiler (2) and is used for purifying hydrogen entering the gas turbine (1) and the afterburning type waste heat boiler (2).
9. The water circulation system according to any one of claims 1 to 4, further comprising:
and the hydrogen control module (13) is connected with the gas turbine (1), the afterburning type waste heat boiler (2) and the water electrolysis device (8) and is used for adjusting the flow, the temperature and the pressure of hydrogen supply.
10. The water circulation system according to any one of claims 2 to 4, further comprising:
and the water processor (3) is arranged between the after-burning type waste heat boiler (2) and the heat supply device (4) and is used for desalting and filtering the liquid water entering the heat supply device (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211076104.1A CN115354347A (en) | 2022-09-02 | 2022-09-02 | Water circulation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211076104.1A CN115354347A (en) | 2022-09-02 | 2022-09-02 | Water circulation system |
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| CN115354347A true CN115354347A (en) | 2022-11-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814578A (en) * | 2023-02-09 | 2023-03-21 | 中国电建集团华东勘测设计研究院有限公司 | Water vapor recovery energy-saving box system of hydrogen-burning energy supply device |
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2022
- 2022-09-02 CN CN202211076104.1A patent/CN115354347A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115814578A (en) * | 2023-02-09 | 2023-03-21 | 中国电建集团华东勘测设计研究院有限公司 | Water vapor recovery energy-saving box system of hydrogen-burning energy supply device |
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