CN105840258A - Combined power generation system for gradient utilization of wind energy, fuel gas and supercritical carbon dioxide energy - Google Patents
Combined power generation system for gradient utilization of wind energy, fuel gas and supercritical carbon dioxide energy Download PDFInfo
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- CN105840258A CN105840258A CN201610240909.3A CN201610240909A CN105840258A CN 105840258 A CN105840258 A CN 105840258A CN 201610240909 A CN201610240909 A CN 201610240909A CN 105840258 A CN105840258 A CN 105840258A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 126
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 63
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 63
- 238000010248 power generation Methods 0.000 title abstract description 9
- 239000002737 fuel gas Substances 0.000 title abstract description 7
- 239000002912 waste gas Substances 0.000 claims abstract description 15
- 239000002918 waste heat Substances 0.000 claims abstract description 7
- 239000012530 fluid Substances 0.000 claims description 49
- 239000000567 combustion gas Substances 0.000 claims description 34
- 239000007789 gas Substances 0.000 claims description 33
- 239000007788 liquid Substances 0.000 claims description 16
- 238000005338 heat storage Methods 0.000 claims description 11
- 239000002699 waste material Substances 0.000 claims description 9
- 230000005611 electricity Effects 0.000 claims description 8
- 230000004087 circulation Effects 0.000 claims description 6
- 230000003009 desulfurizing effect Effects 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 6
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims 1
- 230000006835 compression Effects 0.000 abstract description 5
- 238000007906 compression Methods 0.000 abstract description 5
- 238000011161 development Methods 0.000 description 3
- 230000001172 regenerating effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000002440 industrial waste Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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
- F01K23/00—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids
- F01K23/02—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled
- F01K23/06—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle
- F01K23/10—Plants characterised by more than one engine delivering power external to the plant, the engines being driven by different fluids the engine cycles being thermally coupled combustion heat from one cycle heating the fluid in another cycle with exhaust fluid of one cycle heating the fluid in another cycle
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C3/00—Gas-turbine plants characterised by the use of combustion products as the working fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C6/00—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use
- F02C6/18—Plural gas-turbine plants; Combinations of gas-turbine plants with other apparatus; Adaptations of gas-turbine plants for special use using the waste heat of gas-turbine plants outside the plants themselves, e.g. gas-turbine power heat plants
-
- 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
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/14—Combined heat and power generation [CHP]
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a combined power generation system for gradient utilization of wind energy, fuel gas and supercritical carbon dioxide energy, and the combined power generation system is used for wind energy utilization and application of the supercritical carbon dioxide recompression Bretton power cycle. The system comprises a wind energy collecting system, a fuel gas turbine power generation system, an intermediate-low-temperature waste heat utilization system and a supercritical carbon dioxide recompression Bretton power cycle power generation system. During system work, wind energy is utilized for driving an air compression device, the compressed air is used for the fuel gas turbine system, waste gas and intermediate-low-temperature waste heat exhausted by a fuel gas turbine are recycled to serve as a heat source of a heat exchanger, and gradient utilization of energy is achieved. Carbon dioxide serves as a working medium of the supercritical carbon dioxide recompression Bretton cycle, the power mechanical structure of the supercritical carbon dioxide recompression Bretton cycle is compact, and economic performance is good. The stable combined power generation is achieved through the fuel gas turbine power generation system and the supercritical carbon dioxide recompression Bretton cycle system, and generated power energy is finally input into a power grid.
Description
Technical field:
The present invention relates to a kind of wind energy, combustion gas and supercritical carbon dioxide energy cascade utilization combined generating system,
Bretton power is recompressed for the wind energy energy, the utilization of the middle-low temperature heat energy and supercritical carbon dioxide
The application of circulation.
Background technology:
Due to the most industrial and manufacturing fast development, Fossil fuel demand is risen steadily and makes
Becoming global energy scarcity, the problem such as the waste gas discharge after burning already leads to environmental pollution, as greenhouse is imitated
Should, acid rain, atmospheric pollution etc..Develop novel energy utilization patterns, utilize clean energy resource, fully reclaim
Energy etc. in industry middle-low temperature heat be existing can alleviating energy crisis reduce pollutant to a certain extent
The feasible method of discharge.
Wind energy is the regenerative resource of cleaning, inexhaustible, either in inland or coastal,
There is huge wind energy resources to be available for developing, wind energy can be utilized by treatment in accordance with local conditions.The wind energy in the whole world is about
2.74×109MW, the most available wind energy is about 2 × 107MW, is the water energy that can develop on the earth
10 times of total amount.To 2008, the whole world there are about 94.1GW by the electric power that wind-force produces, supply
Electric power exceeded the 1% of whole world consumption.Adhere to the thought of sustainable development, make full use of wind energy, alleviate
The pressure that conventional Power Generation Mode brings to resource environment, becomes the focus of research.
Carbon dioxide is as the most emerging green working medium, before having huge development in terms of thermodynamic cycle
Scape.Carbon dioxide is widely present in an atmosphere, rich reserves and cheap and easy to get, and the impact on environment is little, it
Non-combustible and there is good chemical stability.The critical temperature of carbon dioxide is 304.21K, and critical pressure is
7.377MPa, is easier to realize supercritical condition, and the requirement to equipment is relatively low, reduces manufacturing cost.Super
Critical carbon dioxide has the low viscosity of the high density of near liquid, approximate gas, compresses in thermodynamic cycle
Low in energy consumption, be conducive to improving therrmodynamic system net efficiency.Compressor with supercritical carbon dioxide as working medium, gas
The compact conformation of the dynamic power machines such as turbine, small volume.
Improving energy utilization rate further, the living environment improving the mankind has become as the common recognition of human society.
In existing industrial production mode, big amount temperature middle-low grade heat energy below 350 DEG C is directly discharged to
In air, this not only wastes the energy, also exacerbates the destruction to environment.In recycling more than low-temperature industrial
Heat, it is achieved the cascade utilization of the energy, for improving efficiency of energy utilization, reduces the energy in industrial processes
Source consumes significant.
Summary of the invention:
It is an object of the invention to provide low-temperature industrial waste heat during one can utilize, it is achieved energy cascade utilization,
Improve efficiency of energy utilization, be the utilization of the wind energy energy, the utilization of middle-low temperature heat and supercritical dioxy simultaneously
The application changing carbon recompression Brayton cycle provides a kind of wind energy, combustion gas and the supercritical carbon dioxide of new approaches
Energy cascade utilization combined generating system.The power generation process of this system has and makes full use of middle-low temperature heat, profit
By cleaning wind energy, realize the good characteristics such as energy cascade utilization, cogeneration, supercritical carbon dioxide simultaneously
Circulation has dynamic power machine compact conformation, take up room little advantage.
For reaching above-mentioned purpose, the present invention adopts the following technical scheme that and is achieved:
A kind of wind energy, combustion gas and supercritical carbon dioxide energy cascade utilization combined generating system, including wind energy
Acquisition system, gas turbine generating system, middle-low temperature heat utilize system and supercritical carbon dioxide recompression
Brayton cycle electricity generation system, wherein,
Described wind collecting system includes Wind turbine and variable speed drive, and this Wind turbine passes with speed change
Dynamic device is connected；
Described gas turbine generating system includes the first compressor, burner, combustion gas turbine and gas turbine
Electromotor；
Described middle-low temperature heat utilizes system to include middle-low temperature heat thermal source, heat storage can and First Heat Exchanger；
Described supercritical carbon dioxide recompression Brayton cycle electricity generation system includes the second heat exchanger, surpasses and face
Boundary's carbon dioxide turbine, high temperature regenerator, cryogenic regenerator, cooler, main compressor, recompression machine and
Electromotor；
First compressor is connected with variable speed drive by axle system, and the first compressor is provided with air intake,
The outlet of the first compressor is connected with the gas access of burner, and burner is provided with fuel inlet, burner
Outlet be connected with the entrance of combustion gas turbine, the outlet of combustion gas turbine is connected with the gas access of the second heat exchanger,
Combustion gas turbine is connected with gas turbine powered generator by axle system, drives gas turbine powered generator generating；
The outlet of middle-low temperature heat thermal source is connected with the entrance of heat storage can, the outlet of heat storage can and First Heat Exchanger
Waste heat entrance be connected；
The cycle fluid entrance of First Heat Exchanger is connected with the low temperature side fluid issuing of high temperature regenerator, and first changes
The cycle fluid outlet of hot device is connected with the cycle fluid entrance of the second heat exchanger, the circulation industrial of the second heat exchanger
Matter outlet is connected with the entrance of supercritical carbon dioxide turbine；The outlet of supercritical carbon dioxide turbine and high temperature
The high temperature side fluid intake of regenerator is connected, and supercritical carbon dioxide turbine is connected with electromotor by axle system,
Drive electrical power generators；The high temperature side fluid issuing of high temperature regenerator enters with the high temperature side fluid of cryogenic regenerator
Mouth is connected, the high temperature side fluid outlet working medium shunting of cryogenic regenerator, and a road enters from the entrance of cooler,
The outlet of cooler is connected with the entrance of main compressor, the outlet of main compressor and the low temperature side of cryogenic regenerator
Fluid intake is connected, the low temperature side fluid issuing of cryogenic regenerator and the low temperature side fluid intake of high temperature regenerator
It is connected；Another road enters from the entrance of recompression machine, the outlet of recompression machine and the low temperature side of high temperature regenerator
Fluid intake is connected.
The present invention is further improved by: utilize clean energy resource wind energy to drive the first compressor operation to carry out
Air compresses.
The present invention is further improved by: described supercritical carbon dioxide recompression Brayton Cycle system
Select supercritical carbon dioxide as working medium.
The present invention is further improved by: described supercritical carbon dioxide recompression Brayton Cycle system
It is provided with shunting recompression circulation.
The present invention is further improved by: be provided with on First Heat Exchanger after exporting to discharge UTILIZATION OF VESIDUAL HEAT IN
Waste gas or waste liquid.
The present invention is further improved by: be provided with chimney on the second heat exchanger with the waste gas after discharge heat exchange.
The present invention is further improved by: the different liquid that middle-low temperature heat thermal source discharges from commercial production
Body or gas, if thermal source is coal-burning boiler, then the entrance phase of the outlet of First Heat Exchanger and dust removing desulfurizing device
Even, the outlet of dust removing desulfurizing device is connected with the entrance of air-introduced machine, the entrance phase of the outlet of air-introduced machine and chimney
Even.
The combined generating system of the present invention, compared with existing electricity generation system, differs primarily in that and utilizes clean energy resource
Wind energy, utilize middle-low temperature heat and realize the cascade utilization of the energy.This combined generating system is to utilize industry raw
Produce the middle-low temperature heat discharged as a heat exchange thermal source in supercritical carbon dioxide recompression Brayton cycle；
Utilize regenerative resource wind energy to drive compressor compresses air for burning, utilize the waste gas conduct of combustion gas turbine
Secondary heat exchange thermal source in supercritical carbon dioxide recompression Brayton cycle；By supercritical carbon dioxide again
Compression Brayton cycle and gas turbine realize cogeneration.This system has several advantages that
1, this system achieves the cascade utilization of the middle-low temperature heat being expelled directly out in a large number in industry, is conducive to
Reduce energy resource consumption, it is to avoid the wasting of resources.This system uses middle-low temperature heat thermal source to provide heat for heat exchanger,
Further with industrial waste gas or waste liquid, not only improve energy utilization rate, reduce again final discharge waste gas or
The temperature of waste liquid, protects environment.
2, this system utilizes regenerative resource wind energy to drive air compression plant, it is achieved that the profit to clean energy resource
With, reducing the whole electricity generation system demand to non-renewable energy resources, the utilization for wind energy provides new approaches.
3, this system have employed supercritical carbon dioxide recompression Brayton Cycle system, shunting recompression
Design is avoided that " folder point " occurs in regenerator, improves system cycle efficieny.
4, in the present invention, blood circulation uses supercritical carbon dioxide to be working medium, due to himself characteristic, circulation
The structure of medium power machinery is the compactest, is taken up space less, and economy has promoted.
5, the present invention combine wind energy, combustion gas and supercritical carbon dioxide recompression Brayton Cycle system realize right
The cascade utilization of the energy, can reach and combine the target providing stable power-supplying.
Accompanying drawing illustrates:
Fig. 1 is described wind energy, combustion gas and supercritical carbon dioxide energy cascade utilization combined generating system.
In figure: 1 is Wind turbine, 2 is variable speed drive, and 3 is the first compressor, and 4 is burner, 5
For combustion gas turbine, 6 is gas turbine powered generator, and 7 is the second heat exchanger, and 8 is middle-low temperature heat thermal source, 9
For heat storage can, 10 is First Heat Exchanger, and 11 is supercritical carbon dioxide turbine, and 12 is high temperature regenerator, 13
For cryogenic regenerator, 14 is cooler, and 15 is main compressor, and 16 is recompression machine, and 17 is electromotor.
Detailed description of the invention:
Below in conjunction with accompanying drawing, the present invention is described in further detail.
See Fig. 1, one wind energy of the present invention, combustion gas and supercritical carbon dioxide energy cascade utilization cogeneration
System, utilizes system and supercritical including wind collecting system, gas turbine generating system, middle-low temperature heat
Carbon dioxide recompression Brayton cycle electricity generation system.
Wherein, described wind collecting system includes Wind turbine 1 and variable speed drive 2, this Wind turbine
1 is connected with variable speed drive 2, utilizes wind energy to drive Wind turbine 1 to produce kinetic energy, is filled by gear
Put and carry out rotating speed control, give the first compressor 3 as power resources stable transport of kinetic energy；
Described gas turbine generating system includes the first compressor 3, burner 4, combustion gas turbine 5 and combustion gas
Turbine generator 6, the first compressor 3 is connected with variable speed drive 2, on the first compressor 3 by axle system
Being provided with air intake, the outlet of the first compressor 3 is connected with the gas access of burner 4, on burner 4
Being provided with fuel inlet, the outlet of burner 4 is connected with the entrance of combustion gas turbine 5, the outlet of combustion gas turbine 5
Being connected with the gas access of the second heat exchanger 7, combustion gas turbine 5 is by axle system and gas turbine powered generator 6 phase
Even.First compressor 3 is driven after variable speed drive 2 regulates and controls by the kinetic energy produced by Wind turbine 1
Dynamic, air is entered by the air intake on the first compressor 3 and is compressed, and the air after compression is by burning
The air intake of device 4 enters, and fuel is entered by the fuel inlet of burner 4, and fuel and compressed air are in combustion
Burning in burner 4, high-temperature fuel gas is entered by the entrance of combustion gas turbine 5, and expands in combustion gas turbine 5 and do
Merit, by being exported electric energy by the gas turbine powered generator 6 of coupling of shaft system, the waste gas after acting is by combustion gas turbine 5
Outlet enter the second heat exchanger 7 gas access, it is provided that the second 7, heat exchanger calorific requirement；
Described middle-low temperature heat utilizes system to include middle-low temperature heat thermal source 8, heat storage can 9, First Heat Exchanger
10, the outlet of middle-low temperature heat thermal source 8 is connected with the entrance of heat storage can 9, the outlet of heat storage can 9 and first
The waste heat entrance of heat exchanger 10 is connected, and First Heat Exchanger 10 is provided with the outlet of waste gas or waste liquid.Middle low temperature
Waste heat thermal source 8 utilizes system to provide origin of heat for middle-low temperature heat, and middle-low temperature heat can be multiple industry
Having waste gas or waste liquid that UTILIZATION OF VESIDUAL HEAT IN is worth in production process, it carries out heat regulation and control by heat storage can 9,
Ensureing to provide stable heat for First Heat Exchanger 10, waste gas or waste liquid are entered by the waste heat of First Heat Exchanger 10
Mouthful entrance heat exchanger and cycle fluid carry out heat exchange, and waste gas after heat exchange or waste liquid are through First Heat Exchanger 10
On outlet discharge.Further, if middle-low temperature heat thermal source 8 is coal-burning boiler, then First Heat Exchanger 10
Outlet should be connected with the entrance of dust removing desulfurizing device, the entrance phase of the outlet of dust removing desulfurizing device and air-introduced machine
Even, the outlet of air-introduced machine is connected with the entrance of chimney, to ensure that the combustion gas discharged reaches environmental protection standard.
Described supercritical carbon dioxide recompression Brayton cycle electricity generation system include First Heat Exchanger 10, the
Two heat exchangers 7, supercritical carbon dioxide turbine 11, high temperature regenerator 12, cryogenic regenerator 13, cooler
14, main compressor 15, recompression machine 16, electromotor 17.The cycle fluid entrance of First Heat Exchanger 10 with
The low temperature side fluid issuing of high temperature regenerator 12 is connected, and the cycle fluid outlet of First Heat Exchanger 10 is with second
The cycle fluid entrance of heat exchanger 7 is connected, cycle fluid outlet and the supercritical titanium dioxide of the second heat exchanger 7
The entrance of carbon turbine 11 is connected, and the gas access of the second heat exchanger 7 is connected with the outlet of combustion gas turbine 5, the
Two heat exchangers 7 are provided with the height of chimney, the outlet of supercritical carbon dioxide turbine 11 and high temperature regenerator 12
Temperature side liquid entrance is connected, and supercritical carbon dioxide turbine 11 is connected with electromotor 17 by axle system, high temperature
The high temperature side fluid issuing of regenerator 12 is connected with the high temperature side fluid intake of cryogenic regenerator 13, and low temperature returns
The high temperature side fluid outlet working medium shunting of hot device 13, a road is connected with the entrance of cooler 14, cooler
The outlet of 14 is connected with the entrance of main compressor 15, and the outlet of main compressor 15 is low with cryogenic regenerator 13
Temperature side liquid entrance is connected, the low temperature side fluid issuing of cryogenic regenerator 13 and the low temperature of high temperature regenerator 12
Side liquid entrance is connected；Another road is connected with the entrance of recompression machine 16, and the outlet of recompression machine 16 is with high
The low temperature side fluid intake of temperature regenerator 12 is connected.In supercritical carbon dioxide recompression Brayton Cycle system,
Working medium supercritical carbon dioxide is flowed out by the low temperature side fluid issuing of high temperature regenerator 12, by First Heat Exchanger 10
Cycle fluid entrance enter, working medium carries out for the first time heat exchange in First Heat Exchanger 10, and working medium is changed by first
The cycle fluid outlet of hot device 10 is flowed out, the cycle fluid entrance of the second heat exchanger 7 enter, change second
Carrying out second time heat exchange in hot device 7, the waste gas that the heat of the second heat exchanger 7 is discharged by combustion gas turbine 5 provides,
The chimney of waste gas discharged by second heat exchanger 7 after being provided with heat exchange, the working medium after heat absorption is by the second heat exchanger 7
Cycle fluid outlet is flowed out, the entrance of supercritical carbon dioxide turbine 11 enter and expansion work wherein,
Driving electromotor 17 to export electric energy, working medium is flowed out by the outlet of supercritical carbon dioxide turbine 11 afterwards, by
The high temperature side fluid intake of high temperature regenerator 12 enters and carries out backheat, then the high temperature by high temperature regenerator 12
Side liquid outlet is flowed out, and enters the high temperature side fluid intake of cryogenic regenerator 13, in cryogenic regenerator 13
Carrying out backheat, afterwards, working medium is flowed out by the high temperature side fluid issuing of cryogenic regenerator 13, is divided into two herein
Road: 1) one route cooler 14 entrance enter, cooler 14 is cooled to entering of main compressor 15
Mouth temperature requirement, working medium flows out from the outlet of cooler 14 afterwards, the entrance of main compressor 15 enter,
Flowed out by the outlet of main compressor 15 after compression, the low temperature side fluid intake of cryogenic regenerator 13 flow into
Preheat, then flowed out by the low temperature side fluid issuing of cryogenic regenerator 13；2) another road is directly by pressing again
The entrance of contracting machine 16 flows into and is compressed, and is discharged, with 1 by the outlet of recompression machine 16 afterwards) in by low temperature
The working medium that the low temperature side fluid issuing of regenerator 13 flows out is converged, and this two parts working medium now has identical temperature
Degree and pressure, the working medium after converging is entered by the low temperature side fluid intake of high temperature regenerator 12, in high temperature backheat
Again preheating in device 12, the working medium after preheating is flowed out by the low temperature side fluid issuing of high temperature regenerator 12,
Entered heat absorption by the cycle fluid entrance of First Heat Exchanger 10, complete closed cycle.
During the work of whole combined generating system, use wind energy to drive, recycle middle-low temperature heat thermal source, combustion
The waste gas that gas turbine is discharged provides system heat exchange institute calorific requirement, it is achieved the cascade utilization of the energy and comprehensive utilization,
Recompress Brayton Cycle system in conjunction with gas turbine generating system and supercritical carbon dioxide and realize stable connection
Closing generating, produced electric energy finally enters electrical network.
Claims (7)
1. wind energy, combustion gas and a supercritical carbon dioxide energy cascade utilization combined generating system, its feature
It is: include that wind collecting system, gas turbine generating system, middle-low temperature heat utilize system and supercritical
Carbon dioxide recompression Brayton cycle electricity generation system, wherein,
Described wind collecting system includes Wind turbine (1) and variable speed drive (2), this Wind turbine
(1) it is connected with variable speed drive (2)；
Described gas turbine generating system includes the first compressor (3), burner (4), combustion gas turbine (5)
With gas turbine powered generator (6)；
Described middle-low temperature heat utilizes system to include middle-low temperature heat thermal source (8), heat storage can (9) and first
Heat exchanger (10)；
Described supercritical carbon dioxide recompression Brayton cycle electricity generation system include the second heat exchanger (7),
Supercritical carbon dioxide turbine (11), high temperature regenerator (12), cryogenic regenerator (13), cooler (14),
Main compressor (15), recompression machine (16) and electromotor (17)；
First compressor (3) is connected with variable speed drive (2), on the first compressor (3) by axle system
Being provided with air intake, the outlet of the first compressor (3) is connected with the gas access of burner (4), burning
Device (4) is provided with fuel inlet, and the outlet of burner (4) is connected with the entrance of combustion gas turbine (5), combustion
The outlet of gas turbine (5) is connected with the gas access of the second heat exchanger (7), and combustion gas turbine (5) passes through axle
System is connected with gas turbine powered generator (6), drives gas turbine powered generator (6) generating；
The outlet of middle-low temperature heat thermal source (8) is connected with the entrance of heat storage can (9), going out of heat storage can (9)
Mouth is connected with the waste heat entrance of First Heat Exchanger (10)；
The cycle fluid entrance of First Heat Exchanger (10) and the low temperature side fluid issuing of high temperature regenerator (12)
It is connected, the cycle fluid outlet of First Heat Exchanger (10) and the cycle fluid entrance phase of the second heat exchanger (7)
Even, the cycle fluid outlet of the second heat exchanger (7) is connected with the entrance of supercritical carbon dioxide turbine (11)；
The outlet of supercritical carbon dioxide turbine (11) is connected with the high temperature side fluid intake of high temperature regenerator (12),
Supercritical carbon dioxide turbine (11) is connected with electromotor (17) by axle system, drives electromotor (17)
Generating；The high temperature side fluid issuing of high temperature regenerator (12) and the high temperature side fluid of cryogenic regenerator (13)
Entrance is connected, and the high temperature side fluid outlet working medium shunting of cryogenic regenerator (13), a road is from cooler (14)
Entrance enter, the outlet of cooler (14) is connected with the entrance of main compressor (15), main compressor (15)
Outlet be connected with the low temperature side fluid intake of cryogenic regenerator (13), the low temperature of cryogenic regenerator (13)
Side liquid outlet is connected with the low temperature side fluid intake of high temperature regenerator (12)；Another road is from recompression machine (16)
Entrance enter, the outlet of recompression machine (16) and the low temperature side fluid intake phase of high temperature regenerator (12)
Even.
A kind of wind energy the most according to claim 1, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: utilize clean energy resource wind energy to drive the first compressor (3) to operate to enter
Line space air pressure contracts.
A kind of wind energy the most according to claim 1, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: described supercritical carbon dioxide recompression Brayton Cycle system choosing
With supercritical carbon dioxide as working medium.
A kind of wind energy the most according to claim 1, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: described supercritical carbon dioxide recompression Brayton Cycle system sets
It is equipped with shunting recompression circulation.
A kind of wind energy the most according to claim 1, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: it is provided with outlet on First Heat Exchanger (10) to discharge UTILIZATION OF VESIDUAL HEAT IN
After waste gas or waste liquid.
A kind of wind energy the most according to claim 5, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: it is provided with chimney on the second heat exchanger (7) with giving up after discharging heat exchange
Gas.
A kind of wind energy the most according to claim 6, combustion gas and supercritical carbon dioxide energy cascade utilization
Combined generating system, it is characterised in that: middle-low temperature heat thermal source (8) from commercial production discharge different
Liquid or gas, if thermal source is coal-burning boiler, then the outlet of First Heat Exchanger (10) and dust removing desulfurizing device
Entrance be connected, the outlet of dust removing desulfurizing device is connected with the entrance of air-introduced machine, the outlet of air-introduced machine and chimney
Entrance be connected.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610240909.3A CN105840258A (en) | 2016-04-18 | 2016-04-18 | Combined power generation system for gradient utilization of wind energy, fuel gas and supercritical carbon dioxide energy |
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| CN201610240909.3A Pending CN105840258A (en) | 2016-04-18 | 2016-04-18 | Combined power generation system for gradient utilization of wind energy, fuel gas and supercritical carbon dioxide energy |
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