CN104405599A - Fuel gas-supercritical carbon dioxide united power electricity generation system utilizing solar energy - Google Patents
Fuel gas-supercritical carbon dioxide united power electricity generation system utilizing solar energy Download PDFInfo
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- CN104405599A CN104405599A CN201410494094.2A CN201410494094A CN104405599A CN 104405599 A CN104405599 A CN 104405599A CN 201410494094 A CN201410494094 A CN 201410494094A CN 104405599 A CN104405599 A CN 104405599A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 46
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 46
- 239000000446 fuel Substances 0.000 title claims abstract description 36
- 230000005611 electricity Effects 0.000 title abstract description 7
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 230000008676 import Effects 0.000 claims description 39
- 239000007789 gas Substances 0.000 claims description 30
- 239000012530 fluid Substances 0.000 claims description 26
- 238000002485 combustion reaction Methods 0.000 claims description 17
- 238000010248 power generation Methods 0.000 claims description 14
- 239000000567 combustion gas Substances 0.000 claims description 13
- 238000004891 communication Methods 0.000 claims description 9
- 239000000779 smoke Substances 0.000 claims description 2
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 230000009466 transformation Effects 0.000 description 4
- 238000010304 firing Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 230000005658 nuclear physics Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03G—SPRING, WEIGHT, INERTIA OR LIKE MOTORS; MECHANICAL-POWER PRODUCING DEVICES OR MECHANISMS, NOT OTHERWISE PROVIDED FOR OR USING ENERGY SOURCES NOT OTHERWISE PROVIDED FOR
- F03G6/00—Devices for producing mechanical power from solar energy
-
- 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
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/40—Solar thermal energy, e.g. solar towers
- Y02E10/46—Conversion of thermal power into mechanical power, e.g. Rankine, Stirling or solar thermal engines
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
-
- 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
- Y02E20/16—Combined cycle power plant [CCPP], or combined cycle gas turbine [CCGT]
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention discloses a fuel gas-supercritical carbon dioxide united power electricity generation system utilizing solar energy. The system comprises a wind compressed air system, a solar energy heating system, a gas turbine electricity generation system and a supercritical carbon dioxide Brayton cycle electricity generation system. According to the invention, a wind power unit directly drives a compression unit to compress air; heat of compressed air is transmitted to a heat regenerator in the supercritical carbon dioxide Brayton cycle; heat generated by the solar energy heating system is automatically distributed to the gas turbine fuel or supercritical carbon dioxide heat regenerator according to demands; exhaust air of a gas turbine is used as a heat source of the supercritical carbon dioxide Brayton cycle electricity generation system to realize fuel gas-supercritical carbon dioxide united power cycle; and the efficiency of the system is improved, and a stable power supply source is provided. According to the system, the stable power supply system can be provided, and meanwhile a new thought is provided for utilization of wind energy and the solar energy and application of the supercritical carbon dioxide Brayton cycle.
Description
[technical field]
The invention belongs to renewable energy utilization technical field, be specifically related to a kind of combustion gas-supercritical carbon dioxide combined power power generation system utilizing solar energy.
[background technique]
For solving and the reply problem such as energy shortage and environmental pollution, in the last few years, government continued to increase the fund input of renewable energy sources research and Demonstration And Extension and industrialization dynamics, and the ratio of renewable energy sources shared by China energy consumption structure rises year by year.This wherein, wind energy as a kind of clean reproducible energy, for Substitute coal generating and carbon dioxide discharge-reduction important role.Solar energy be equally a kind of important can at the raw energy, and there is features such as having a very wide distribution, total resources is large, cleaning is pollution-free, at present three aspects such as being converted into electric energy, heat energy, chemical energy are mainly concentrated on to the utilization of solar energy, solar energy uses as thermal source, technology is comparatively ripe, and can run working medium by it very well provides enough heat energy to be used for heating.
After the eighties, because the single-machine capacity of gas turbine and the thermal efficiency all have significant improvement, particularly Gas-steam Combined Cycle technology is gradually ripe, add the further exploitation of natural gas resource in world wide, make gas turbine obtain very fast development, gas turbine and the status of combined cycle in world's power industry thereof also there occurs obvious change.Because combustion engine combined cycle power plant efficiency is high, mobility is good, can meet the environmental requirement of increasingly stringent, and in the electric motor power that the current whole world increases newly every year, have more than l/3 to be employing gas-steam combined cycle set, the U.S. is then close to l/2.According to incompletely statistics, the gas turbine of the existing oil firing in the whole world and burning rock gas and the installation total capacity of combined cycle thereof are more than 400,000,000 kW.
Supercritical fluid is utilized to intend critical zone physical property jumping phenomenon, compressor operating point is arranged on the large density region near pseudo-critical temperature, low density area after heat exchanger operating point is arranged on pseudo-critical temperature, can under the gas-cooled prerequisite of guarantee, reduce compression power consumption, realize higher efficiency.This character of supercritical fluid makes it have obvious advantage as during transformation of energy working medium.Carbon dioxide (CO
2) due to its critical pressure rather moderate (7.38MPa), there is good stability and nuclear physics character, the character of inert gas is shown in certain temperature range, and the characteristic such as it is nontoxic, rich reserves, natural existence, be considered to one of the Energy Transfer and transformation of energy working medium of most application prospect.Due to supercritical carbon dioxide (S-CO
2) within the scope of certain Operational Limits, density is comparatively large and without phase transformation, therefore with supercritical carbon dioxide (S-CO
2) be power system compact equipment, the small volume such as compressor, gas-turbine of working medium.The each combination of brayton cycle can the electric power of output 20MW, takes up room and only have four cubic meters.Supercritical carbon dioxide (S-CO
2) Bretton (Brayton) circulation turbine is generally used for large-scale heating power and nuclear energy power generation aspect, comprise power reactor of future generation, target is that (efficiency is lower for the steam-powered Rankine cycle turbine of final replacement, there is corrosivity in high temperature condition, simultaneously owing to needing very large turbine and condenser to process unnecessary steam, taking up room is 30 times).
[summary of the invention]
The object of the present invention is to provide a kind of combustion gas-supercritical carbon dioxide combined power power generation system utilizing solar energy, it can improve power generation system efficiency, there is provided stable power-supplying power supply, be wind energy, the utilization of solar energy and supercritical carbon dioxide (S-CO simultaneously
2) utilization of Bretton (Brayton) power cycle provides new approaches.
For achieving the above object, the present invention adopts following technological scheme to be achieved:
Utilize combustion gas-supercritical carbon dioxide combined power power generation system of solar energy, comprise wind-power compressed air system, solar heating system, gas turbine generating system and supercritical carbon dioxide brayton cycle power generation system; Wherein,
Wind-power compressed air system comprises Wind turbine and surge tank, and this Wind turbine is connected with the first compressor bank by variable speed drive group, and the first compressor bank is provided with air inlet;
Solar heating system comprises tower type solar heat collector, this tower type solar heat collector comprises heliostat, receiver and thermal-arrest tower, wherein, receiver receives from heliostat solar irradiation, it is arranged on the top of thermal-arrest tower, the heat-exchange working medium import of receiver exports with the heat-exchange working medium of First Heat Exchanger group and is connected, the heat-exchange working medium outlet of receiver is connected with the heat-exchange working medium import of First Heat Exchanger group, form a circulation loop, First Heat Exchanger group is provided with fuel gateway, the fuel outlet of First Heat Exchanger group is connected with the import of fuel storage device by pipeline,
Gas turbine generating system comprises burner, the gas access of burner is connected with the gas outlet of the surge tank in wind-power compressed air system, the fuel inlet of burner is connected with the outlet of the fuel storage device in solar heating system, the outlet of burner is connected with the import of combustion gas turbine, the outlet of combustion gas turbine is connected with the import of the second heat exchanger package, and combustion gas turbine is connected with gas turbine powered generator by axle system;
Supercritical carbon dioxide brayton cycle power system comprises regenerator, the outlet of the first compressor bank is connected with the air intlet of regenerator, the air outlet slit of regenerator is connected with the import of surge tank, the heat-exchange working medium import of receiver exports with the heat-exchange working medium of regenerator and is connected, the heat-exchange working medium outlet of receiver is connected with the heat-exchange working medium import of regenerator, form a circulation loop, the low temperature side fluid input of regenerator is communicated with the fluid output of the second compressor bank, the low temperature side fluid output of regenerator is connected with the import of the second heat exchanger package, the high temperature side fluid inlet of regenerator and the outlet of steam turbine, the high temperature side fluid output of regenerator and the inlet communication of cooler, the outlet of cooler and the inlet communication of the second compressor bank, the outlet of the second heat exchanger package and the inlet communication of steam turbine, steam turbine is connected with the second compressor bank and steam turbine generation machine respectively by axle system.
The present invention further improves and is: in the outlet of regenerator and the inlet connecting branch road of surge tank, be provided with the first control valve, and the outlet of surge tank and the air intlet connecting pipeline of burner are provided with the second control valve, the connecting tube that the heat-exchange working medium import of receiver and the heat-exchange working medium of First Heat Exchanger group export is provided with the 3rd control valve, the connecting tube that the heat-exchange working medium import of receiver and the heat-exchange working medium of regenerator export is provided with the 5th control valve, heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of First Heat Exchanger group of receiver are provided with the 4th control valve, heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of regenerator of receiver are provided with the 6th control valve, the connecting tube of the outlet of fuel storage device and the fuel inlet of burner is provided with the 7th control valve.
The present invention further improves and is: supercritical carbon dioxide brayton cycle power system uses supercritical carbon dioxide to be working medium.
The present invention further improves and is: the second heat exchanger package is also provided with smoke outlet.
Relative to prior art, the present invention is by Wind turbine direct driving compressor unit pressurized air, and compressed-air actuated heat passes to supercritical carbon dioxide (S-CO
2) regenerator in Bretton (Brayton) circulation, the heat that solar heating system produces distributes to combustion engine fuel or supercritical carbon dioxide regenerator automatically with demand, for the exhaust of gas turbine as supercritical carbon dioxide (S-CO
2) thermal source of Bretton (Brayton) cycle generating system realizes combustion gas-supercritical carbon dioxide combined power circulation, improve the efficiency of system, and provide stable power supply.The present invention combines wind-power compressed air system, solar heating system, gas turbine generating system, supercritical carbon dioxide (S-CO
2) Bretton (Brayton) cycle generating system, provide stable power supply system, be wind energy, the utilization of solar energy and supercritical carbon dioxide (S-CO simultaneously
2) utilization of Bretton (Brayton) power cycle provides new thinking.
[accompanying drawing explanation]
Fig. 1 is a kind of overall structure schematic diagram utilizing the combustion gas-supercritical carbon dioxide combined power power generation system of solar energy of the present invention;
In figure: 1, Wind turbine, 2, variable speed drive group, the 3, first compressor bank, 4, surge tank, 5, heliostat, 6, receiver, 7, thermal-arrest tower, 8, First Heat Exchanger group, 9, fuel storage device, 10, burner, 11, combustion gas turbine, 12, gas turbine powered generator, 13, the second heat exchanger package, 14, regenerator, 15, cooler, 16, the second compressor bank, 17, steam turbine, 18, steam turbine generation machine.
[embodiment]
Below in conjunction with accompanying drawing, the present invention is described in detail.
See Fig. 1, a kind of combustion gas-supercritical carbon dioxide combined power power generation system utilizing solar energy of the present invention, comprises wind-power compressed air system, solar heating system, gas turbine generating system and supercritical carbon dioxide (S-CO
2) Bretton (Brayton) cycle generating system.
Wind-power compressed air system comprises Wind turbine 1, variable speed drive group 2, first compressor bank 3 and surge tank 4, and Wind turbine 1 is connected with the first compressor bank 3 by variable speed drive group 2, and the first compressor bank 3 is provided with air inlet;
Solar heating system comprises tower type solar heat collector, this tower type solar heat collector comprises heliostat 5, receiver 6, thermal-arrest tower 7, First Heat Exchanger group 8 and fuel storage device 9, wherein, receiver 6 receives from heliostat 5 solar irradiation, it is connected with thermal-arrest tower 7, the heat-exchange working medium import of receiver 6 exports with the heat-exchange working medium of First Heat Exchanger group 8 and is connected, the heat-exchange working medium outlet of receiver 6 is connected with the heat-exchange working medium import of First Heat Exchanger group 8, form a circulation loop, First Heat Exchanger group 8 is provided with fuel gateway, the fuel outlet of First Heat Exchanger group 8 is connected by the import of pipeline with fuel storage device 9,
Gas turbine generating system comprises burner 10, combustion gas turbine 11, gas turbine powered generator 12 and the second heat exchanger package 13, the gas access of burner 10 is connected with the gas outlet of the surge tank 4 in wind-power compressed air system, the fuel inlet of burner 10 is connected with the outlet of the fuel storage device 9 in solar heating system, the outlet of burner 10 is connected with the import of combustion gas turbine 11, the outlet of combustion gas turbine 11 is connected with the import of the second heat exchanger package 13, and combustion gas turbine 11 is connected with gas turbine powered generator 12 by axle system; The fuel heated via First Heat Exchanger group 8 and the air mixed combustion in burner 10 compressed via the first compressor bank 3, form high-temperature fuel gas, entering acting in combustion gas turbine 11 drives gas turbine generator 12 to generate electricity, the exhaust of combustion gas turbine 11 enters the second heat exchanger package 13 and carries out heat exchange, and the exhaust steam after heat exchange is discharged from chimney.
Supercritical carbon dioxide (S-CO
2) Bretton (Brayton) Circulated power system comprises regenerator 14, cooler 15, second compressor bank 16 and steam turbine 17, the outlet of the first compressor bank 3 is connected with the air intlet of regenerator 14, the air outlet slit of regenerator 14 is connected with the import of surge tank 4, the heat-exchange working medium import of receiver 6 exports with the heat-exchange working medium of regenerator 14 and is connected, the heat-exchange working medium outlet of receiver 6 is connected with the heat-exchange working medium import of regenerator 14, form a circulation loop, the low temperature side fluid input of regenerator 14 is communicated with the fluid output of the second compressor bank 16, the low temperature side fluid output of regenerator 14 is connected with the import of the second heat exchanger package 13, the high temperature side fluid inlet of regenerator 14 and the outlet of steam turbine 17, the high temperature side fluid output of regenerator 14 and the inlet communication of cooler 15, the outlet of cooler 15 and the inlet communication of the second compressor bank 16, the outlet of the second heat exchanger package 13 and the inlet communication of steam turbine 17, steam turbine 17 is connected with steam turbine generation machine 18 by axle system.The carbon dioxide of low-temp low-pressure compresses boosting through the second compressor bank 16, again after the preheating of regenerator 14 high temperature side fluid, enter the second heat exchanger package 13 and carry out heat exchange, directly enter steam turbine 17 after absorbing heat to do work, drive steam turbine generation machine 18 to generate electricity, the weary gas after acting after low temperature side fluid cooling in regenerator 14, then is cooled to required compressor bank inlet temperature by cooler 15, finally enter the second compressor bank 16 from cooler 15 outlet, realize closed cycle.
Further, the outlet of regenerator 14 and the inlet connecting branch road of surge tank 4 are provided with the first control valve F1, the outlet of surge tank 4 and the air intlet connecting pipeline of burner 10 are provided with the second control valve F2, the connecting tube that the heat-exchange working medium import of receiver 6 and the heat-exchange working medium of First Heat Exchanger group 8 export is provided with the 3rd control valve F3, the connecting tube that the heat-exchange working medium import of receiver 6 and the heat-exchange working medium of regenerator 14 export is provided with the 5th control valve F5, heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of First Heat Exchanger group 8 of receiver 6 are provided with the 4th control valve F4, heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of regenerator 14 of receiver 6 are provided with the 6th control valve F6, the connecting tube of the outlet of fuel storage device 9 and the fuel inlet of burner 10 is provided with the 7th control valve F7.
When wind energy conversion system works, open the first control valve F1, close the second control valve F2, Wind turbine 1 drags the first compressor bank 3 by variable speed drive 2, the air absorbed from the external world compresses by the first compressor bank 3, form the pressurized air with High Temperature High Pressure, the pressurized air of High Temperature High Pressure enters in regenerator 14, the supercritical carbon dioxide fluid of heating low temperature side, after heat exchange in regenerator 14, enter in surge tank 4, when gas turbine works, close the first control valve F1, open the second control valve F2, pressurized air in surge tank 4 enters in firing chamber 10, burn with fuel mix.
The heat of solar energy can distribute to combustion engine fuel or supercritical carbon dioxide regenerator automatically with demand, when needs provide heat to regenerator 14, close the 3rd control valve F3 and the 4th control valve F4, open the 5th control valve F5 and the 6th control valve F6, heat-exchange working medium absorbs heat in receiver 6, heat-exchange working medium after heat absorption enters in regenerator 14 and carries out heat exchange with the low temperature side fluid of regenerator 14, after working medium after heat exchange flows out from the heat-exchange working medium outlet of regenerator 14, reenter in receiver 6 and form circulation, when needs heating combustion engine fuel, close the 5th control valve F5 and the 6th control valve F6, open the 3rd control valve F3 and the 4th control valve F4, heat-exchange working medium absorbs heat in receiver 6, heat-exchange working medium after heat absorption enters in First Heat Exchanger group 8 and carries out heat exchange with fuel, after working medium after heat exchange flows out from the heat exchanger exit of First Heat Exchanger group 8, reenter in receiver 6 and form circulation, fuel after heat exchange enters in fuel storage device 9 and stores, when gas turbine works, open the 7th control valve F7, fuel enters in firing chamber 10, mixed combustion is carried out with pressurized air.
The CO of low-temp low-pressure
2gas compresses after boosting through the second compressor bank 16, regenerator 14 is entered along low temperature side fluid line, after high temperature side fluid preheating in regenerator 14, enter the second heat exchanger package 13 and carry out heat exchange, after supercritical fluid absorbs heat, directly enter steam turbine 17 acting and drive the generating of steam turbine generation machine, weary gas after acting enters regenerator 14 along high temperature side fluid line, after low temperature side fluid cooling in regenerator 14, enter cooler 15, required compressor bank inlet temperature is cooled to by cooler 15, finally enter the second compressor bank 16 from cooler outlet, realize closed cycle.
In wind-power compressed air system of the present invention, Wind turbine directly drives compressor bank acting by variable speed drive, does not need to be converted into electric energy and drags compressor bank by motor unit again, decrease equipment, saved cost.
Supercritical carbon dioxide (S-CO of the present invention
2) in Bretton (Brayton) Circulated power system, due to supercritical carbon dioxide (S-CO
2) within the scope of certain Operational Limits, density is comparatively large and without phase transformation, therefore with supercritical carbon dioxide (S-CO
2) be power system compact equipment, the small volume such as compressor, gas-turbine of working medium, both cost-saving, save space again.
Claims (4)
1. utilize combustion gas-supercritical carbon dioxide combined power power generation system of solar energy, it is characterized in that: comprise wind-power compressed air system, solar heating system, gas turbine generating system and supercritical carbon dioxide brayton cycle power generation system; Wherein,
Wind-power compressed air system comprises Wind turbine (1) and surge tank (4), this Wind turbine (1) is connected with the first compressor bank (3) by variable speed drive group (2), and the first compressor bank (3) is provided with air inlet;
Solar heating system comprises tower type solar heat collector, this tower type solar heat collector comprises heliostat (5), receiver (6) and thermal-arrest tower (7), wherein, receiver (6) receives from heliostat (5) solar irradiation, it is arranged on the top of thermal-arrest tower (7), the heat-exchange working medium import of receiver (6) exports with the heat-exchange working medium of First Heat Exchanger group (8) and is connected, the heat-exchange working medium outlet of receiver (6) is connected with the heat-exchange working medium import of First Heat Exchanger group (8), form a circulation loop, First Heat Exchanger group (8) is provided with fuel gateway, the fuel outlet of First Heat Exchanger group (8) is connected by the import of pipeline with fuel storage device (9),
Gas turbine generating system comprises burner (10), the gas access of burner (10) is connected with the gas outlet of the surge tank (4) in wind-power compressed air system, the fuel inlet of burner (10) is connected with the outlet of the fuel storage device (9) in solar heating system, the outlet of burner (10) is connected with the import of combustion gas turbine (11), the outlet of combustion gas turbine (11) is connected with the import of the second heat exchanger package (13), combustion gas turbine (11) is connected with gas turbine powered generator (12) by axle system,
Supercritical carbon dioxide brayton cycle power system comprises regenerator (14), the outlet of the first compressor bank (3) is connected with the air intlet of regenerator (14), the air outlet slit of regenerator (14) is connected with the import of surge tank (4), the heat-exchange working medium import of receiver (6) exports with the heat-exchange working medium of regenerator (14) and is connected, the heat-exchange working medium outlet of receiver (6) is connected with the heat-exchange working medium import of regenerator (14), form a circulation loop, the low temperature side fluid input of regenerator (14) is communicated with the fluid output of the second compressor bank (16), the low temperature side fluid output of regenerator (14) is connected with the import of the second heat exchanger package (13), the high temperature side fluid inlet of regenerator (14) and the outlet of steam turbine (17), the high temperature side fluid output of regenerator (14) and the inlet communication of cooler (15), the outlet of cooler (15) and the inlet communication of the second compressor bank (16), the outlet of the second heat exchanger package (13) and the inlet communication of steam turbine (17), steam turbine (17) is connected with the second compressor bank (16) and steam turbine generation machine (18) respectively by axle system.
2. combustion gas-supercritical carbon dioxide combined power the power generation system utilizing renewable energy sources according to claim 1, it is characterized in that: in the outlet of regenerator (14) and the inlet connecting branch road of surge tank (4), the first control valve (F1) is installed, the outlet of surge tank (4) and the air intlet connecting pipeline of burner (10) are provided with the second control valve (F2), the connecting tube that the heat-exchange working medium import of receiver (6) and the heat-exchange working medium of First Heat Exchanger group (8) export is provided with the 3rd control valve (F3), the connecting tube that the heat-exchange working medium import of receiver (6) and the heat-exchange working medium of regenerator (14) export is provided with the 5th control valve (F5), heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of First Heat Exchanger group (8) of receiver (6) are provided with the 4th control valve (F4), heat-exchange working medium outlet and the connecting tube of the heat-exchange working medium import of regenerator (14) of receiver (6) are provided with the 6th control valve (F6), the connecting tube of the outlet of fuel storage device (9) and the fuel inlet of burner (10) is provided with the 7th control valve (F7).
3. combustion gas-supercritical carbon dioxide combined power the power generation system utilizing renewable energy sources according to claim 1, is characterized in that: supercritical carbon dioxide brayton cycle power system uses supercritical carbon dioxide to be working medium.
4. combustion gas-supercritical carbon dioxide combined power the power generation system utilizing renewable energy sources according to claim 1, is characterized in that: (13) are also provided with smoke outlet to the second heat exchanger package.
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Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104791204A (en) * | 2015-03-24 | 2015-07-22 | 西安交通大学 | Combined power generation system with geothermal heating, fuel gas and supercritical carbon dioxide |
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