CN114658507A - Waste heat complementary energy liquefied gas energy storage power generation system - Google Patents
Waste heat complementary energy liquefied gas energy storage power generation system Download PDFInfo
- Publication number
- CN114658507A CN114658507A CN202210331898.5A CN202210331898A CN114658507A CN 114658507 A CN114658507 A CN 114658507A CN 202210331898 A CN202210331898 A CN 202210331898A CN 114658507 A CN114658507 A CN 114658507A
- Authority
- CN
- China
- Prior art keywords
- pipeline
- heat
- storage tank
- heat exchanger
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007789 gas Substances 0.000 title claims abstract description 184
- 239000002918 waste heat Substances 0.000 title claims abstract description 80
- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 238000010248 power generation Methods 0.000 title claims abstract description 25
- 230000000295 complement effect Effects 0.000 title claims abstract description 12
- 238000005338 heat storage Methods 0.000 claims abstract description 86
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 230000005494 condensation Effects 0.000 claims description 13
- 238000009833 condensation Methods 0.000 claims description 13
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
- 230000005611 electricity Effects 0.000 abstract description 14
- 238000005516 engineering process Methods 0.000 abstract description 9
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- -1 wind Substances 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000005622 photoelectricity Effects 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 4
- 239000006200 vaporizer Substances 0.000 description 4
- 238000002309 gasification Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D15/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01D15/10—Adaptations for driving, or combinations with, electric generators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K13/00—General layout or general methods of operation of complete plants
- F01K13/02—Controlling, e.g. stopping or starting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K25/00—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for
- F01K25/08—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours
- F01K25/10—Plants or engines characterised by use of special working fluids, not otherwise provided for; Plants operating in closed cycles and not otherwise provided for using special vapours the vapours being cold, e.g. ammonia, carbon dioxide, ether
- F01K25/103—Carbon dioxide
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
- F01K27/00—Plants for converting heat or fluid energy into mechanical energy, not otherwise provided for
- F01K27/02—Plants modified to use their waste heat, other than that of exhaust, e.g. engine-friction heat
-
- 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
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D20/00—Heat storage plants or apparatus in general; Regenerative heat-exchange apparatus not covered by groups F28D17/00 or F28D19/00
-
- 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
- Y02E60/14—Thermal energy storage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a waste heat complementary energy liquefied gas energy storage power generation system which comprises a liquefied gas storage tank, a turbine expander, a turbine expansion power generator set, a heat exchange gasifier, a gas reliquefaction device, a heat increasing heat exchanger, a water tank and a heat storage tank, wherein the turbine expander is connected with the turbine expansion power generator set; the heat storage tank is connected with an electrode boiler and a heat supply system through a pipeline; the heat required by heating the heat storage tank is provided by the electrode boiler and the heating system. The invention can fully utilize various unstable waste heat, wind, water, photoelectricity and off-peak electricity while solving the problem of electricity abandonment in off-peak electricity time period and the problem of impact of unstable characteristics of wind electricity and photovoltaic electricity on a power grid, and has the advantages of high utilization rate, large adjustment range, less energy consumption, high conversion rate and good economic benefit. The temperature of the waste heat after heat exchange can be reduced to below 20 ℃, compared with the conventional waste heat power generation technology, the temperature can be reduced to above 100 ℃, and the waste heat utilization efficiency can be improved by more than 2 times.
Description
Technical Field
The invention relates to the technical field of liquefied air energy storage, in particular to a waste heat complementary energy liquefied gas energy storage power generation system.
Background
Compared with other compressed air energy storage technologies of the same type, the liquefied gas energy storage technology has the remarkable advantages of low storage pressure, high energy storage density, no terrain limitation and the like, air or gases such as CO2 and N2 can be produced into liquid for storage through air abandoning, light abandoning, water abandoning and off-peak electricity in the off-peak period of electricity consumption by the liquefied air energy storage technology through compression refrigeration, and the liquid gas is pressurized and vaporized to generate electric energy meeting the power frequency requirement and then is transmitted to a power grid in the peak period of electricity consumption, so that the problem of electricity abandonment in the off-peak period is solved, and the impact of unstable characteristics of new energy sources (wind power and photovoltaic power) on the power grid can be solved.
Although the liquefied gas energy storage technology has the advantages in the aspects of resolving peak-to-valley differences and solving the problem of new energy grid connection, the conventional liquefied gas energy storage technology still has unstable new energy which is difficult to directly drive the compressor, and a large amount of energy is consumed for liquefying air, so that the system efficiency is reduced. At present, the efficiency of the liquefied air energy storage system is only about 40%. In the industries of steel, coking, cement and the like, the heat energy utilization rate is only 28 percent, in the thermal power industry, the heat energy utilization rate of coal and electricity is only 38 percent, and the heat energy utilization rate of gas power generation is only 45 to 52 percent. A large amount of heat energy is lost through smoke exhaust (flue), tail gas condensation and the like in the thermal power plant. The conventional waste heat utilization technology is a mode of generating electricity by generating steam through a waste heat boiler. The method has the defects of low utilization rate of residual heat energy (generally lower than 30%), fluctuation along with fluctuation of the residual heat energy (unstable power generation), almost no energy storage function (the residual heat which cannot be used in the electricity utilization valley time and the residual energy (electricity) cannot be stored in the peak time period) and the like.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a waste heat complementary energy liquefied gas energy storage power generation system.
In order to solve the technical problems, the technical scheme provided by the invention is that the waste heat and complementary energy liquefied gas energy storage power generation system comprises: the system comprises a liquefied gas storage tank, a turbine expander, a turbine expansion generator set, a heat exchange gasifier, a gas reliquefaction device, a heat increasing heat exchanger, a water tank and a heat storage tank; the heat storage tank is connected with an electrode boiler and a heat supply system through a pipeline; the liquefied gas storage tank is connected with the heat exchange gasifier through a pipeline, the liquefied gas storage tank is connected with the gas reliquefaction device through a pipeline, the turbine expander is connected with a fan through a pipeline, the fan is connected with the heat exchange gasifier through a pipeline, the heat exchange gasifier is connected with the heat increasing heat exchanger through a pipeline, the turbine expander is connected with the gas reliquefaction device through a pipeline, the heat increasing heat exchanger is connected with the turbine expansion generator set through a pipeline, the turbine expansion generator set is connected with the gas reliquefaction device through a pipeline, the pipeline between the heat increasing heat exchanger and the turbine expansion generator set is connected with the turbine expander through a connecting pipe, the heat increasing heat exchanger is connected with a water tank through a pipeline, the water tank is connected with a first cold water pump through a pipeline, the first cold water pump is connected with the heat storage tank through a pipeline, the heat increasing heat exchanger is connected with the heat storage tank through a pipeline, and heat required by heat increase of the heat storage tank is provided by the electrode boiler and the heating system.
Furthermore, a first control valve is arranged on a pipeline between the liquefied gas storage tank and the heat exchange gasifier, and a second control valve is arranged on a pipeline between the liquefied gas storage tank and the gas reliquefaction device; a first check valve is arranged on a pipeline between the turboexpander and the gas reliquefaction device; a third control valve is arranged on the connecting pipe; a fourth control valve is arranged on a pipeline between the heat increasing heat exchanger and the turbine expansion generator set, and the fourth control valve is positioned between the connecting pipe and the turbine expansion generator set; a second check valve is arranged on a pipeline between the turbine expansion generating set and the gas reliquefaction device; a fifth control valve is arranged on a pipeline between the first cold water pump and the heat storage tank; a sixth control valve is arranged on a pipeline between the heat increasing heat exchanger and the heat storage tank; the heat storage tank gas outlet is connected with the electrode boiler gas inlet through a pipeline, the electrode boiler gas outlet is connected with the heat storage tank gas inlet through a pipeline, a seventh control valve is arranged on the pipeline between the electrode boiler gas outlet and the heat storage tank gas inlet, and an eighth control valve is arranged on the pipeline between the heat exchange gasifier and the heat increasing heat exchanger.
Further, heating system is including system, the waste heat exchanger that produces the waste heat, the gas outlet of the system that produces the waste heat passes through the pipeline and is connected with the air inlet of waste heat exchanger, the air inlet of the system that produces the waste heat passes through the pipeline and is connected with the gas outlet of waste heat exchanger, waste heat exchanger passes through the pipeline and is connected with the heat storage tank, the gas inlet of waste heat exchanger gas outlet through pipeline and heat storage tank is connected, the gas outlet of waste heat exchanger gas inlet through pipeline and heat storage tank is connected, and the system, the waste heat exchanger that produce the waste heat adopt parallel mode with the heat storage tank.
Furthermore, a ninth control valve is arranged on a pipeline between the air outlet of the waste heat generating system and the air inlet of the waste heat exchanger, a tenth control valve is arranged on a pipeline between the air inlet of the waste heat generating system and the air outlet of the waste heat exchanger, an eleventh control valve is arranged on a branch pipeline at the air outlet end of the waste heat exchanger, a twelfth control valve is arranged on a branch pipeline at the air inlet end of the waste heat exchanger, a seventh control valve is arranged on a branch pipeline at the air outlet end of the electrode boiler, a thirteenth control valve is arranged on a branch pipeline at the air inlet end of the electrode boiler, and a fourteenth control valve and a second cold water pump are arranged on a main pipeline at the air outlet end of the electrode boiler.
Further, the heat supply system comprises tail gas of the thermal generator set, flue gas of a boiler of the thermal power plant, a condensation heat exchanger and a flue heat exchanger, the thermal generator set is connected with the condensing heat exchanger through a pipeline, the thermal generator set is connected with a boiler of a thermal power plant through a pipeline, the air outlet of the boiler of the thermal power plant is connected with the air inlet of the heat storage tank through a pipeline, the air inlet of the boiler of the thermal power plant is connected with the air outlet of the heat storage tank through a pipeline, the boiler of the thermal power plant is connected with the boiler of the thermal power plant through a third cold water pump and a pipeline, the boiler of the thermal power plant is connected with the flue heat exchanger through a pipeline, the gas outlet of the flue heat exchanger is connected with the gas inlet of the heat storage tank through a pipeline, the gas inlet of the flue heat exchanger is connected with the gas outlet of the heat storage tank through a pipeline, and the flue heat exchanger, the condensation heat exchanger, the electrode boiler and the heat storage tank adopt a parallel connection mode.
Further, be equipped with the fifteenth control valve on the pipeline between thermal generator set and the boiler of thermal power plant, be equipped with the sixteenth control valve on the branch road pipeline of electrode boiler gas outlet end, be equipped with the seventeenth control valve on the branch road pipeline of electrode boiler gas inlet end, be equipped with the eighteenth control valve on the branch road pipeline of condensation heat exchanger gas outlet end, be equipped with the nineteenth control valve on the branch road pipeline of condensation heat exchanger gas inlet end, be equipped with the twentieth control valve on the branch road pipeline of flue heat exchanger gas outlet end, be equipped with the twenty-first control valve on the branch road pipeline of flue heat exchanger gas inlet end, be equipped with the third check valve on the heat storage tank gas outlet end main line pipeline, first cold water pump passes through the pipeline and is connected with electrode boiler gas inlet end, be equipped with the twenty-second control valve on the pipeline between first cold water pump and the electrode boiler.
Compared with the prior art, the invention has the advantages that: 1. the electrode boiler is a device which directly converts electric energy into heat energy and generates hot water by utilizing the high heat resistance characteristic of water, the heating principle is based on three-phase medium-voltage current, a large amount of heat energy is released by furnace water with set conductivity, so that the hot water which can be controlled and utilized is generated, as the resistance of the water is utilized to directly heat, the electric energy can be converted into heat energy by 100 percent, the heat loss is basically avoided, and the adjusting range can be adjusted at will between 0 and 100 percent. The method is particularly applicable to the energy storage of extremely unstable wind power and photovoltaic power, and also can convert the wind power and the photovoltaic power into high-quality peak-to-average power. If the capacity of the electrode boiler is increased in a doubling way, the full-time power generation of the liquefied gas energy storage generator set in the peak time period can be realized, the annual power generation amount of existing pumped storage, compressed air energy storage and the like can be reduced to less than 2000 hours and increased to more than 5000 hours, the utilization rate of the energy storage machine is greatly increased, and the economic benefit is greatly increased. 2. The cold energy generated by Rankine cycle on the gasified gas after turbine expansion power generation or work application is fully utilized, and the liquefaction energy consumption can be reduced by more than 80% when reliquefaction is carried out, and the air energy during heat exchange gasification can be reduced, so that the liquefied gas energy storage process route can realize the electricity-electricity conversion rate of more than 90%, and is more than one time of the liquefied air energy storage conversion rate of the traditional technology. 3. Unstable waste heat, wind, water, photoelectricity and off-peak electricity can be fully utilized, and a wider space is opened up for large-scale utilization of new energy; 4. the invention can reduce the temperature of the waste heat after heat exchange to below 20 ℃, can only reduce the temperature to above 100 ℃ compared with the conventional waste heat power generation technology, and can improve the waste heat utilization efficiency by more than 2 times.
Drawings
Fig. 1 is a schematic structural diagram of a waste heat and complementary energy liquefied gas energy storage power generation system in embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of a waste heat and complementary energy liquefied gas energy storage power generation system in embodiment 2 of the present invention.
As shown in the figure: 1. liquefied gas storage tank, 2, turbo expander, 3, turbo expansion generator set, 4, heat exchange vaporizer, 5, gas reliquefaction device, 6, heat increasing heat exchanger, 7, water tank, 8, heat storage tank, 9, electrode boiler, 10, fan, 11, first cold water pump, 12, first control valve, 13, second control valve, 14, first check valve, 15, third control valve, 16, fourth control valve, 17, second check valve, 18, fifth control valve, 19, sixth control valve, 20, seventh control valve, 21, eighth control valve, 22, system for generating waste heat, 23, waste heat exchanger, 24, ninth control valve, 25, tenth control valve, 26, eleventh control valve, 27, twelfth control valve, 28, thirteenth control valve, 29, fourteenth control valve, 30, second cold water pump, 31, thermal generator set, 32, thermal power plant boiler, 33. the condensation heat exchanger, 34, the flue heat exchanger, 35, the third cold water pump, 36, the fifteenth control valve, 37, the sixteenth control valve, 38, the seventeenth control valve, 39, the eighteenth control valve, 40, the nineteenth control valve, 41, the twentieth control valve, 42, the twenty-first control valve, 43, the third check valve, 44 and the twenty-second control valve.
Detailed Description
The invention relates to a waste heat and complementary energy liquefied gas energy storage power generation system, which is further described in detail with reference to the accompanying drawings.
With reference to fig. 1, a waste heat complementary energy liquefied gas energy storage power generation system comprises a liquefied gas storage tank 1, a turbine expander 2, a turbine expansion power generation unit 3, a heat exchange gasifier 4, a gas reliquefaction device 5, a heat increasing heat exchanger 6, a water tank 7 and a heat storage tank 8; the heat storage tank 8 is connected with an electrode boiler 9 and a heat supply system through pipelines; the liquefied gas storage tank 1 is connected with a heat exchange gasifier 4 through a pipeline, the liquefied gas storage tank 1 is connected with a gas reliquefaction device 5 through a pipeline, the turbine expander 2 is connected with a fan 10 through a pipeline, the fan 10 is connected with the heat exchange gasifier 4 through a pipeline, the heat exchange gasifier 4 is connected with a heat increasing heat exchanger 6 through a pipeline, the turbine expander 2 is connected with the gas reliquefaction device 5 through a pipeline, the heat increasing heat exchanger 6 is connected with a turbine expansion generator set 3 through a pipeline, the turbine expansion generator set 3 is connected with the gas reliquefaction device 5 through a pipeline, the pipeline between the heat increasing heat exchanger 6 and the turbine expansion generator set 3 is connected with the turbine expander 2 through a connecting pipe, the heat increasing heat exchanger 6 is connected with a water tank 7 through a pipeline, and the water tank 7 is connected with a first cold water pump 11 through a pipeline, first cold water pump 11 passes through the pipeline and is connected with heat storage tank 8, heat increasing heat exchanger 6 passes through the pipeline and is connected with heat storage tank 8, heat that heat storage tank 8 adds the heat demand is provided by electrode boiler 9 and heating system.
A first control valve 12 is arranged on a pipeline between the liquefied gas storage tank 1 and the heat exchange gasifier 4, and a second control valve 13 is arranged on a pipeline between the liquefied gas storage tank 1 and the gas reliquefaction device 5; a first check valve 14 is arranged on a pipeline between the turboexpander 2 and the gas reliquefaction device 5; a third control valve 15 is arranged on the connecting pipe; a fourth control valve 16 is arranged on a pipeline between the heat increasing heat exchanger 6 and the turbine expansion generator set 3, and the fourth control valve 16 is positioned between a connecting pipe and the turbine expansion generator set 3; a second check valve 17 is arranged on a pipeline between the turbine expansion generator set 3 and the gas reliquefaction device 5; a fifth control valve 18 is arranged on a pipeline between the first cold water pump 11 and the heat storage tank 8; a sixth control valve 19 is arranged on a pipeline between the heat increasing heat exchanger 6 and the heat storage tank 8; the heat storage tank 8 gas outlet is connected with the electrode boiler 9 gas inlet through a pipeline, the electrode boiler 9 gas outlet is connected with the heat storage tank 8 gas inlet through a pipeline, a seventh control valve 20 is arranged on the pipeline between the electrode boiler 9 gas outlet and the heat storage tank 8 gas inlet, and an eighth control valve 21 is arranged on the pipeline between the heat exchange vaporizer 4 and the heat increasing heat exchanger 6.
The heating system is including system 22, the waste heat exchanger 23 that produces the waste heat, the gas outlet of system 22 that produces the waste heat passes through the pipeline and is connected with the air inlet of waste heat exchanger 23, the gas inlet of system 22 that produces the waste heat passes through the pipeline and is connected with the gas outlet of waste heat exchanger 23, waste heat exchanger 23 passes through the pipeline and is connected with heat storage tank 8, waste heat exchanger 23 gas outlet passes through the pipeline and is connected with heat storage tank 8's air inlet, waste heat exchanger 23 air inlet passes through the pipeline and is connected with heat storage tank 8's gas outlet, and produces system 22, waste heat exchanger 23 and the heat storage tank 8 adoption parallel mode of waste heat.
A ninth control valve 24 is arranged on a pipeline between the air outlet of the waste heat generating system 22 and the air inlet of the waste heat exchanger 23, a tenth control valve 25 is arranged on a pipeline between the air inlet of the waste heat generating system 22 and the air outlet of the waste heat exchanger 23, an eleventh control valve 26 is arranged on a branch pipeline at the air outlet end of the waste heat exchanger 23, a twelfth control valve 27 is arranged on a branch pipeline at the air inlet end of the waste heat exchanger 23, a seventh control valve 20 is arranged on a branch pipeline at the air outlet end of the electrode boiler 9, a thirteenth control valve 28 is arranged on a branch pipeline at the air inlet end of the electrode boiler 9, and a fourteenth control valve 29 and a second cold water pump 30 are arranged on a main pipeline at the air outlet end of the electrode boiler 9.
When the invention is implemented specifically, the liquefied gas in the liquefied gas storage tank 1 enters the heat exchange gasifier 4 through the first control valve 12, and the gasification heat of the heat exchange gasifier 4 comes from the fan 10; the gasified gas enters the heat increasing heat exchanger 6 through the eighth control valve 21, is heated to about 170k, enters the turbine expansion generator set 3 through the fourth control valve 16 to generate power, enters the turbine expander 2 through the third control valve 15 to drive the fan 10, and the subcooled tail gas which is close to the critical temperature of gas liquefaction and is generated and provided with power enters the gas reliquefaction device 5 through the first check valve 14 and the second check valve 17 to be reliquefied into liquid gas, is pressurized to the required pressure in the gas reliquefaction device 5, and then enters the liquefied gas storage tank 1 through the second control valve 13 to be stored for later use.
The heat used for heating comes from the system 22 generating waste heat and the heat storage medium (softened water) in the heat storage tank 8 of the electrode boiler 9, is pressurized through the fourteenth control valve 29 and the second cold water pump 30, then enters the waste heat exchanger 23 through the twelfth control valve 27, and then enters the heat storage tank 8 through the eleventh control valve 26 for standby after being heated. The heat in the waste heat exchanger 23 comes from the system 22 for generating waste heat. When the residual heat is not enough to meet the heating requirement, the residual heat is heated by the electrode boiler 9 through the thirteenth control valve 28 and then enters the heat storage tank 8 through the seventh control valve 20 for standby.
When the gasified gas needs to be heated, the gasified gas enters the heat increasing heat exchanger 6 through the sixth control valve 19, cold water after heat exchange enters the water tank 7 for standby, and then is pumped into the heat storage tank 8 through the first cold water pump 11 and the fifth control valve 18, so that the pressure in the heat storage tank 8 is ensured, and the gasified gas is prevented from being vaporized when the saturated pressure of the stored heat water is reached.
Further, a first control valve 12 is arranged on a pipeline between the liquefied gas storage tank 1 and the heat exchange gasifier 4, and a second control valve 13 is arranged on a pipeline between the liquefied gas storage tank 1 and the gas reliquefaction device 5; a first check valve 14 is arranged on a pipeline between the turboexpander 2 and the gas reliquefaction device 5; a third control valve 15 is arranged on the connecting pipe; a fourth control valve 16 is arranged on a pipeline between the heat increasing heat exchanger 6 and the turbine expansion generator set 3, and the fourth control valve 16 is positioned between a connecting pipe and the turbine expansion generator set 3; a second check valve 17 is arranged on a pipeline between the turbine expansion generator set 3 and the gas reliquefaction device 5; a fifth control valve 18 is arranged on a pipeline between the first cold water pump 11 and the heat storage tank 8; a sixth control valve 19 is arranged on a pipeline between the heat increasing heat exchanger 6 and the heat storage tank 8; the heat storage tank 8 gas outlet is connected with the electrode boiler 9 gas inlet through a pipeline, the electrode boiler 9 gas outlet is connected with the heat storage tank 8 gas inlet through a pipeline, a seventh control valve 20 is arranged on the pipeline between the electrode boiler 9 gas outlet and the heat storage tank 8 gas inlet, and an eighth control valve 21 is arranged on the pipeline between the heat exchange vaporizer 4 and the heat increasing heat exchanger 6.
Heating system includes tail gas, the flue gas of thermal power plant boiler 32, condensation heat exchanger 33, flue heat exchanger 34 of thermal power generating set 31, thermal power generating set 31 passes through the pipeline and is connected with condensation heat exchanger 33, thermal power generating set 31 passes through the pipeline and is connected with thermal power plant boiler 32, thermal power plant boiler 32's gas outlet passes through the pipeline and is connected with the air inlet of heat storage tank 8, thermal power plant boiler 32's air inlet passes through the pipeline and is connected with the gas outlet of heat storage tank 8, thermal power plant boiler 32 passes through third cold water pump 35, pipeline and is connected with thermal power plant boiler 32, thermal power plant boiler 32 passes through the pipeline and is connected with flue heat exchanger 34, flue heat exchanger 34 gas outlet passes through the pipeline and is connected with heat storage tank 8 air inlets, flue heat exchanger 34 air inlet passes through the pipeline and is connected with heat storage tank 8 gas outlets, flue heat exchanger 34, The condensing heat exchanger 33, the electrode boiler 9 and the heat storage tank 8 are connected in parallel.
A fifteenth control valve 36 is arranged on a pipeline between the thermal generator set 31 and the thermal power plant boiler 32, a sixteenth control valve 37 is arranged on the branch pipeline at the air outlet end of the electrode boiler 9, a seventeenth control valve 38 is arranged on the branch pipeline at the air inlet end of the electrode boiler 9, an eighteenth control valve 39 is arranged on the branch pipeline at the air outlet end of the condensing heat exchanger 33, a nineteenth control valve 40 is arranged on the branch pipeline at the air inlet end of the condensing heat exchanger 33, a twentieth control valve 41 is arranged on the branch pipeline at the air outlet end of the flue heat exchanger 34, a twenty-first control valve 42 is arranged on the branch pipeline at the air inlet end of the flue heat exchanger 34, a third check valve 43 is arranged on a main pipeline at the air outlet end of the heat storage tank 8, the first cold water pump 11 is connected with the air inlet end of the electrode boiler 9 through a pipeline, a twenty-second control valve 44 is arranged on a pipeline between the first cold water pump 11 and the electrode boiler 9.
When the invention is implemented specifically, the liquefied gas in the liquefied gas storage tank 1 enters the heat exchange gasifier 4 through the first control valve 12, and the gasification heat of the heat exchange gasifier 4 comes from the fan 10; the gasified gas enters the heat increasing heat exchanger 6 through the eighth control valve 21, is heated to about 170k, enters the turbine expansion generator set 3 through the fourth control valve 16 to generate power, enters the turbine expander 2 through the third control valve 15 to drive the fan 10, and the subcooled tail gas which is close to the critical temperature of gas liquefaction and is generated and provided with power enters the gas reliquefaction device 5 through the first check valve 14 and the second check valve 17 to be reliquefied into liquid gas, is pressurized to the required pressure in the gas reliquefaction device 5, and then enters the liquefied gas storage tank 1 through the second control valve 13 to be stored for later use.
The heat used for heating comes from the tail gas of the electrode boiler 9, the tail gas of the thermal generator set 31 and the flue gas of the boiler 32 of the thermal power plant. The heat storage medium (softened water) in the heat storage tank 8 enters the condensing heat exchanger 33 and the flue heat exchanger 34 through the nineteenth control valve 40 and the twenty-first control valve 42, and enters the heat storage tank 8 for standby through the eighteenth control valve 39 and the twentieth control valve 41 after being heated. When the residual heat is insufficient, the waste heat is heated by the electrode boiler 9 through the seventeenth control valve 38 and enters the heat storage tank 8 through the seventh control valve 20 for standby.
When the gasified gas needs to be heated, the gasified gas enters the heat increasing heat exchanger 6 through the sixth control valve 19, cold water after heat exchange enters the water tank 7 for standby, and then is pumped into the heat storage tank 8 through the first cold water pump 11 and the fifth control valve 18, so that the pressure in the heat storage tank 8 is ensured, and the gasified gas is prevented from being vaporized when the saturated pressure of the stored heat water is reached.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (6)
1. The utility model provides a waste heat complementary energy liquefied gas energy storage power generation system which characterized in that: the system comprises a liquefied gas storage tank (1), a turbine expansion machine (2), a turbine expansion generator set (3), a heat exchange gasifier (4), a gas reliquefaction device (5), a heat increasing heat exchanger (6), a water tank (7) and a heat storage tank (8);
the heat storage tank (8) is connected with an electrode boiler (9) and a heat supply system through a pipeline;
the liquefied gas storage tank (1) is connected with the heat exchange gasifier (4) through a pipeline, the liquefied gas storage tank (1) is connected with the gas reliquefaction device (5) through a pipeline, the turbine expander (2) is connected with the fan (10) through a pipeline, the fan (10) is connected with the heat exchange gasifier (4) through a pipeline, the heat exchange gasifier (4) is connected with the heat increasing heat exchanger (6) through a pipeline, the turbine expander (2) is connected with the gas reliquefaction device (5) through a pipeline, the heat increasing heat exchanger (6) is connected with the turbine expansion generator set (3) through a pipeline, the turbine expansion generator set (3) is connected with the gas reliquefaction device (5) through a pipeline, the pipeline between the heat increasing heat exchanger (6) and the turbine expansion generator set (3) is connected with the turbine expander (2) through a connecting pipe, the heat increasing heat exchanger (6) is connected with the water tank (7) through a pipeline, the water tank (7) is connected with a first cold water pump (11) through a pipeline, the first cold water pump (11) is connected with the heat storage tank (8) through a pipeline, the heat increasing heat exchanger (6) is connected with the heat storage tank (8) through a pipeline, and heat required by the heat increase of the heat storage tank (8) is provided by an electrode boiler (9) and a heat supply system.
2. The residual heat and energy liquefied gas energy storage power generation system according to claim 1, characterized in that: a first control valve (12) is arranged on a pipeline between the liquefied gas storage tank (1) and the heat exchange gasifier (4), and a second control valve (13) is arranged on a pipeline between the liquefied gas storage tank (1) and the gas reliquefaction device (5); a first check valve (14) is arranged on a pipeline between the turboexpander (2) and the gas reliquefaction device (5); a third control valve (15) is arranged on the connecting pipe; a fourth control valve (16) is arranged on a pipeline between the heat increasing heat exchanger (6) and the turbine expansion generator set (3), and the fourth control valve (16) is positioned between the connecting pipe and the turbine expansion generator set (3); a second check valve (17) is arranged on a pipeline between the turbine expansion generator set (3) and the gas reliquefaction device (5); a fifth control valve (18) is arranged on a pipeline between the first cold water pump (11) and the heat storage tank (8); a sixth control valve (19) is arranged on a pipeline between the heat increasing heat exchanger (6) and the heat storage tank (8); the heat storage tank (8) gas outlet is connected with the electrode boiler (9) gas inlet through a pipeline, the electrode boiler (9) gas outlet is connected with the heat storage tank (8) gas inlet through a pipeline, a seventh control valve (20) is arranged on the pipeline between the electrode boiler (9) gas outlet and the heat storage tank (8) gas inlet, and an eighth control valve (21) is arranged on the pipeline between the heat exchange gasifier (4) and the heat increasing heat exchanger (6).
3. The residual heat and energy liquefied gas energy storage power generation system according to claim 1, characterized in that: the heating system is including system (22), waste heat exchanger (23) that produce the waste heat, the gas outlet of system (22) that produces the waste heat passes through the pipeline and is connected with the air inlet of waste heat exchanger (23), the air inlet of system (22) that produces the waste heat passes through the pipeline and is connected with the gas outlet of waste heat exchanger (23), waste heat exchanger (23) are connected with heat storage tank (8) through the pipeline, waste heat exchanger (23) gas outlet is connected with the air inlet of heat storage tank (8) through the pipeline, waste heat exchanger (23) air inlet is connected with the gas outlet of heat storage tank (8) through the pipeline, and system (22), waste heat exchanger (23) that produce the waste heat adopt parallel mode with heat storage tank (8).
4. The residual heat and energy liquefied gas energy storage power generation system according to claim 3, characterized in that: be equipped with ninth control valve (24) on the pipeline between the gas outlet of system for producing waste heat (22) and the gas inlet of waste heat exchanger (23), be equipped with tenth control valve (25) on the pipeline between the gas inlet of system for producing waste heat (22) and the gas outlet of waste heat exchanger (23), waste heat exchanger (23) gas outlet end branch road pipeline is equipped with eleventh control valve (26), be equipped with twelfth control valve (27) on waste heat exchanger (23) gas inlet end branch road pipeline, seventh control valve (20) are located on electrode boiler (9) gas outlet end branch road pipeline, be equipped with thirteenth control valve (28) on electrode boiler (9) gas inlet end branch road pipeline, be equipped with fourteenth control valve (29), second cold water pump (30) on electrode boiler (9) gas outlet end main road pipeline.
5. The residual heat and energy liquefied gas energy storage power generation system according to claim 1, characterized in that: the heating system includes tail gas of thermal generator set (31), flue gas, condensation heat exchanger (33), flue heat exchanger (34) of thermal power plant boiler (32), thermal generator set (31) are connected with condensation heat exchanger (33) through the pipeline, thermal generator set (31) are connected with thermal power plant boiler (32) through the pipeline, the gas outlet of thermal power plant boiler (32) passes through the pipeline and is connected with the air inlet of heat storage tank (8), the gas inlet of thermal power plant boiler (32) passes through the pipeline and is connected with the gas outlet of heat storage tank (8), thermal power plant boiler (32) is connected with thermal power plant boiler (32) through third cold water pump (35), pipeline, thermal power plant boiler (32) pass through the pipeline and are connected with flue heat exchanger (34), flue heat exchanger (34) gas outlet passes through the pipeline and is connected with heat storage tank (8) air inlet, the air inlet of the flue heat exchanger (34) is connected with the air outlet of the heat storage tank (8) through a pipeline, and the flue heat exchanger (34), the condensation heat exchanger (33), the electrode boiler (9) and the heat storage tank (8) are connected in parallel.
6. The residual heat and energy liquefied gas energy storage power generation system according to claim 5, characterized in that: be equipped with fifteenth control valve (36) on the pipeline between thermal generator set (31) and thermal power plant's boiler (32), be equipped with sixteenth control valve (37) on the branch road pipeline of electrode boiler (9) gas outlet end, be equipped with seventeenth control valve (38) on the branch road pipeline of electrode boiler (9) gas inlet end, be equipped with eighteenth control valve (39) on the branch road pipeline of condensation heat exchanger (33) gas outlet end, be equipped with nineteenth control valve (40) on the branch road pipeline of condensation heat exchanger (33) gas inlet end, be equipped with twentieth control valve (41) on the branch road pipeline of flue heat exchanger (34) gas outlet end, be equipped with twenty first control valve (42) on the branch road pipeline of flue heat exchanger (34) gas inlet end, be equipped with third check valve (43) on the heat storage tank (8) gas outlet end main road pipeline, first cold water pump (11) is connected with electrode boiler (9) gas inlet end through the pipeline, and a twenty-second control valve (44) is arranged on a pipeline between the first cold water pump (11) and the electrode boiler (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331898.5A CN114658507A (en) | 2022-03-30 | 2022-03-30 | Waste heat complementary energy liquefied gas energy storage power generation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210331898.5A CN114658507A (en) | 2022-03-30 | 2022-03-30 | Waste heat complementary energy liquefied gas energy storage power generation system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114658507A true CN114658507A (en) | 2022-06-24 |
Family
ID=82033806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210331898.5A Pending CN114658507A (en) | 2022-03-30 | 2022-03-30 | Waste heat complementary energy liquefied gas energy storage power generation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114658507A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203452988U (en) * | 2013-06-21 | 2014-02-26 | 常波 | Solar generator |
| CN103673028A (en) * | 2013-12-18 | 2014-03-26 | 大连船舶重工集团装备制造有限公司 | Electrode hot-water boiler system applied to automatic balancing system for power grid shock loads |
| CN106481378A (en) * | 2016-12-13 | 2017-03-08 | 中国科学院广州能源研究所 | A kind of new liquefaction air energy storage systems |
| CN108645116A (en) * | 2018-04-10 | 2018-10-12 | 杭州杭氧化医工程有限公司 | A kind of liquefied air energy-storage system with coil pipe regenerator |
| CN110159513A (en) * | 2019-04-30 | 2019-08-23 | 杭州杭氧化医工程有限公司 | A kind of liquefied air energy-storage system using electrical heat energy |
| CN111121390A (en) * | 2019-12-19 | 2020-05-08 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Liquefied air energy storage power generation system coupled with steam-water system of coal-fired power generating unit |
| CN111396162A (en) * | 2020-04-20 | 2020-07-10 | 贵州电网有限责任公司 | High-efficiency advanced compressed air energy storage system and method |
| CN112254561A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system utilizing LNG cold energy and fuel gas peak shaving power generation waste heat |
| CN112984598A (en) * | 2021-03-16 | 2021-06-18 | 中国华能集团清洁能源技术研究院有限公司 | Power plant boiler heat storage and carbon dioxide power generation integrated deep peak regulation system and method |
-
2022
- 2022-03-30 CN CN202210331898.5A patent/CN114658507A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203452988U (en) * | 2013-06-21 | 2014-02-26 | 常波 | Solar generator |
| CN103673028A (en) * | 2013-12-18 | 2014-03-26 | 大连船舶重工集团装备制造有限公司 | Electrode hot-water boiler system applied to automatic balancing system for power grid shock loads |
| CN106481378A (en) * | 2016-12-13 | 2017-03-08 | 中国科学院广州能源研究所 | A kind of new liquefaction air energy storage systems |
| CN108645116A (en) * | 2018-04-10 | 2018-10-12 | 杭州杭氧化医工程有限公司 | A kind of liquefied air energy-storage system with coil pipe regenerator |
| CN110159513A (en) * | 2019-04-30 | 2019-08-23 | 杭州杭氧化医工程有限公司 | A kind of liquefied air energy-storage system using electrical heat energy |
| CN111121390A (en) * | 2019-12-19 | 2020-05-08 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Liquefied air energy storage power generation system coupled with steam-water system of coal-fired power generating unit |
| CN111396162A (en) * | 2020-04-20 | 2020-07-10 | 贵州电网有限责任公司 | High-efficiency advanced compressed air energy storage system and method |
| CN112254561A (en) * | 2020-10-19 | 2021-01-22 | 中国科学院理化技术研究所 | Liquid air energy storage system utilizing LNG cold energy and fuel gas peak shaving power generation waste heat |
| CN112984598A (en) * | 2021-03-16 | 2021-06-18 | 中国华能集团清洁能源技术研究院有限公司 | Power plant boiler heat storage and carbon dioxide power generation integrated deep peak regulation system and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111121390A (en) | Liquefied air energy storage power generation system coupled with steam-water system of coal-fired power generating unit | |
| CN116006292A (en) | Liquefied air energy storage system coupling LNG cold energy, ORC technology and natural heat source and working method of liquefied air energy storage system | |
| CN111120105B (en) | Pressurized-water heat storage-gas steam combined energy storage system and method | |
| CN104373165A (en) | System for generating power through liquefied natural gas cold energy | |
| CN116591791B (en) | Compressed air energy storage system combined with thermal power and operation method | |
| CN205243745U (en) | Natural gas distributed energy system coupled with solar energy | |
| CN209687559U (en) | A kind of LNG cold energy recycling power generator based on carbon dioxide working medium | |
| CN115031283B (en) | Thermoelectric flexible storage and supply system and operation method thereof | |
| CN110926049A (en) | Cogeneration low-temperature heating process and system | |
| CN114658507A (en) | Waste heat complementary energy liquefied gas energy storage power generation system | |
| CN106930834B (en) | A kind of energy-saving distributing-supplying-energy system based on liquefied natural gas | |
| CN114659023B (en) | Liquefied gas energy storage system | |
| CN211853954U (en) | Thermoelectric decoupling system for gas turbine cogeneration unit | |
| CN210483984U (en) | Liquefied air energy storage system utilizing pressurized liquid propane to store cold | |
| CN113803959A (en) | Household gas water heater coupling liquefied air energy storage reactor system and operation method | |
| CN105508158B (en) | Natural gas distributed energy system coupled with solar energy | |
| CN111928525A (en) | Liquefied air energy storage peak regulation system and method based on waste heat refrigeration | |
| CN115306500B (en) | Transcritical compressed carbon dioxide energy storage system and operation method thereof | |
| CN118242625B (en) | Thermal power peak regulation system and method based on oxyhydrogen combustion closed cycle | |
| CN220018284U (en) | Compressed air energy storage waste heat recovery heat storage utilization system | |
| CN204238992U (en) | A kind of system utilizing cold energy of liquefied natural gas to generate electricity | |
| CN221921091U (en) | Compressed carbon dioxide energy storage system coupled with thermal power plant | |
| CN220527699U (en) | Graphene production, LNG energy storage and gas power generation coupling gas network peak shaving system | |
| CN219640337U (en) | Coupling heating system for improving efficiency of compressed air energy storage power station | |
| CN219492354U (en) | System for coupling industrial steam extraction to improve efficiency of compressed air energy storage power station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |