CN115199370A - Backheating type Brayton cycle system - Google Patents
Backheating type Brayton cycle system Download PDFInfo
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- CN115199370A CN115199370A CN202110385817.5A CN202110385817A CN115199370A CN 115199370 A CN115199370 A CN 115199370A CN 202110385817 A CN202110385817 A CN 202110385817A CN 115199370 A CN115199370 A CN 115199370A
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- 239000003546 flue gas Substances 0.000 claims abstract description 102
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 100
- 239000002131 composite material Substances 0.000 claims abstract description 74
- 238000002485 combustion reaction Methods 0.000 claims abstract description 48
- 239000007789 gas Substances 0.000 claims abstract description 40
- 239000000446 fuel Substances 0.000 claims abstract description 30
- 230000001172 regenerating effect Effects 0.000 claims abstract description 14
- 238000010248 power generation Methods 0.000 claims abstract description 7
- 239000003570 air Substances 0.000 claims description 118
- 239000013529 heat transfer fluid Substances 0.000 claims description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 13
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 12
- 229910001868 water Inorganic materials 0.000 claims description 12
- 239000002028 Biomass Substances 0.000 claims description 11
- 238000002309 gasification Methods 0.000 claims description 11
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 8
- 239000003345 natural gas Substances 0.000 claims description 5
- 239000002918 waste heat Substances 0.000 claims description 5
- 239000001569 carbon dioxide Substances 0.000 claims description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 4
- 239000003245 coal Substances 0.000 claims description 4
- 239000010849 combustible waste Substances 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 4
- 229910052734 helium Inorganic materials 0.000 claims description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 4
- 239000001257 hydrogen Substances 0.000 claims description 4
- 229910052739 hydrogen Inorganic materials 0.000 claims description 4
- 125000004435 hydrogen atom Chemical class [H]* 0.000 claims description 4
- 239000002440 industrial waste Substances 0.000 claims description 4
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 4
- 239000003208 petroleum Substances 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 238000005192 partition Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000012080 ambient air Substances 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000003517 fume Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 238000010411 cooking Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003915 liquefied petroleum gas Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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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
- 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
- F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
- F01K17/02—Using steam or condensate extracted or exhausted from steam engine plant for heating purposes, e.g. industrial, domestic
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The invention relates to a regenerative Brayton cycle system, which comprises a composite heat transfer regenerator, a gas compressor, a turbine, a combustion chamber and a generator, wherein the gas compressor is arranged on the gas compressor; the outlet of the compressor is connected with the inlet of an air flow passage of the composite heat transfer regenerator, the outlet of the air flow passage of the composite heat transfer regenerator is connected with the inlet of a turbine, the outlet of the turbine is connected with the air inlet of a combustion chamber, and the high-temperature flue gas outlet of the combustion chamber is connected with the flue gas inlet of the composite heat transfer regenerator; the compressed air from the compressor is heated by the composite heat transfer regenerator, and the heated compressed air enters the turbine to do work to drive the generator to generate electricity; the tail gas coming out of the turbine enters a combustion chamber to be combusted with fuel to form high-temperature flue gas, the high-temperature flue gas enters a composite heat transfer regenerator to transfer heat of the high-temperature flue gas to low-temperature compressed air, the exhaust temperature of the high-temperature flue gas is reduced, and the power generation efficiency of a system is improved.
Description
Technical Field
The invention relates to a Brayton cycle system, in particular to a regenerative Brayton cycle power generation system.
Background
The current world energy supply system mainly takes centralized energy supply as the main part. The system is characterized by large capacity, high parameter, high efficiency and the like. Although the centralized power generation efficiency is high, the power transmission and heat transmission distances are long, pipelines are long, the investment is large, and great defects exist in the aspects of flexibility and safety. For centralized energy system, distributed energy system is little and nimble to can combine with refrigeration, heat supply, air feed etc. overall efficiency is high, its main characteristics have: the method has the advantages of low equipment investment, high combined heat and power supply efficiency, energy diversification, multi-energy complementation, environment optimization and good adaptability. For example, in southern cities in China, the cities are mostly cold in winter and hot in summer, and air conditioners are needed for heating and refrigerating in winter and summer, so that the energy consumption is very high. Furthermore, southern heating is not suitable for use in the northern "central heating" due to its economics. The adoption of a distributed combined cooling heating and power system is an effective way for solving the problem.
The Brayton cycle (gas turbine) power generation technology is reliable in operation, is suitable for various energy supply systems, and has a large power range, wherein a micro gas turbine (with the power less than 1000 kW) is a key power generation device suitable for a distributed energy system, and can be suitable for various fuels, such as natural gas, diesel oil, methane, liquefied petroleum gas and the like. For example, biomass resources in rural areas in China are rich, and straws, wood and the like are commonly used as fuels for cooking rice and burning fertilizer, so that relatively serious environmental pollution is caused, and the efficiency is low. The Brayton cycle is utilized to fully utilize the biomass fuel, improve the heat efficiency and reduce the pollution caused by direct combustion of the biomass.
The regenerative Brayton cycle utilizes turbine high-temperature exhaust to preheat compressed air from the compressor, reduces the exhaust gas temperature, and can improve the power generation efficiency of the system from 20% to more than 30%. The heat regenerator can be mainly divided into a main surface type, a plate-fin type and a shell-and-tube type according to the structure. At present, the main applications are main surface type and plate-fin type heat regenerators, the heat exchange area is large and compact, but the welding sealing workload is large, the manufacturing cost is high, the welding seam is easy to leak, and the reliability needs to be verified. The traditional shell-and-tube heat exchanger has small specific surface area, large volume and large heat exchange temperature difference.
Disclosure of Invention
Aiming at the problems of the prior regenerative Brayton cycle and the heat regenerator thereof, the invention provides a novel composite heat transfer heat regenerator and a Brayton cycle system with the same, so as to increase the heat exchange area of the heat regenerator, reduce the loss of flow resistance, reduce the manufacturing cost and improve the stability, reliability and efficiency of the system. The specific scheme of the invention is as follows:
the compound heat transfer regenerator comprises an air flow channel and a flue gas flow channel, the air flow channel and the flue gas flow channel are separated by a heat transfer clapboard, the compound heat transfer regenerator is provided with at least one or more heat transfer tubes, the heat transfer tubes penetrate through the air flow channel and the flue gas flow channel, heat transfer fluid is arranged in the heat transfer tubes, and an outlet of the air compressor is connected with an inlet of the air flow channel of the compound heat transfer regenerator.
The combustion chamber has two arrangements, one before the turbine inlet and one after the turbine outlet. When the combustion chamber is positioned in front of the turbine inlet, the air runner outlet of the composite heat transfer regenerator is connected with the combustion chamber air inlet, the combustion chamber outlet is connected with the turbine inlet, the turbine outlet is connected with the flue gas runner inlet of the composite heat transfer regenerator, flue gas is discharged from the flue gas runner outlet of the composite heat transfer regenerator, and fuel enters from the fuel inlet of the combustion chamber. The specific working process is as follows: ambient air enters an inlet of the air compressor, after being compressed by the air compressor, the compressed air enters an air flow channel of the composite heat transfer regenerator, the compressed air heated by the composite heat transfer regenerator enters an air inlet of the combustion chamber, fuel enters from a fuel inlet of the combustion chamber, the air and the fuel are combusted to generate high-temperature flue gas, the high-temperature flue gas enters the turbine to expand and do work, exhaust gas from an outlet of the turbine enters an inlet of a flue gas flow channel of the composite heat transfer regenerator, and cooled flue gas is discharged from an outlet of the flue gas flow channel of the composite heat transfer regenerator.
When the combustion chamber is positioned behind the turbine outlet, the air flow passage outlet of the composite heat transfer regenerator is connected with the turbine inlet, the turbine outlet is connected with the air inlet of the combustion chamber, the outlet of the combustion chamber is connected with the flue gas flow passage inlet of the composite heat transfer regenerator, flue gas is discharged from the flue gas flow passage outlet of the composite heat transfer regenerator, and fuel enters from the fuel inlet of the combustion chamber. The specific working process comprises the following steps: ambient air enters an inlet of the air compressor, after being compressed by the air compressor, the compressed air enters an air flow channel of the composite heat transfer regenerator, the heated compressed air enters the turbine to expand and do work, exhaust gas coming out of an outlet of the turbine enters the combustion chamber, fuel enters from a fuel inlet of the combustion chamber and is combusted with exhaust gas of the turbine to produce high-temperature flue gas, the high-temperature flue gas enters a flue gas flow channel of the composite heat transfer regenerator again, and the cooled flue gas is discharged from a flue gas flow channel outlet of the composite heat transfer regenerator.
The heat of the high-temperature flue gas in the flue gas channel of the composite heat transfer regenerator is transferred to the compressed air in the air channel through the heat transfer partition plate. The heat transfer pipe is internally provided with heat transfer fluid, and when the heat transfer fluid flows through the heat transfer pipe positioned in the flue gas channel, the heat transfer fluid absorbs the heat of high-temperature flue gas in the flue gas channel; heating the compressed air in the air flow passage as the heat transfer fluid flows through the heat transfer tube in the air flow passage. The heat of the high-temperature flue gas in the flue gas channel is transferred to the compressed air in the air channel through the heat transfer partition plate and the heat transfer pipe together, so that the heat transfer rate is improved.
The heat transfer fluid is one or more of heat transfer oil, molten salt, liquid metal, water, hydrogen, helium, air and carbon dioxide. The fuel required by the combustion chamber is one or more of natural gas, synthetic gas, biomass gasified gas, coal, petroleum, biomass, combustible waste and industrial waste gas. The turbine is connected with the compressor and the generator through a shaft, and the generator finally outputs electric energy to the outside.
In addition, the invention also comprises a gasification furnace, and gasification gas generated by the gasification furnace is used as fuel of the combustion chamber, namely, a gasification gas outlet of the gasification furnace is connected with a fuel inlet of the combustion chamber. Preferably, the gasification gas outlet of the gasification furnace is divided into two paths, one path is connected with the fuel inlet of the combustion chamber, the other path is connected with the inlet of the purifier, the gasification gas is purified by the purifier, the content of harmful substances such as tar and dust is reduced, and clean gas is output outwards.
Furthermore, the invention also comprises a waste heat utilization device, wherein a flue gas flow passage outlet of the composite heat transfer regenerator is connected with a flue gas inlet of the waste heat utilization device.
Preferably, the invention further comprises a steam generator, wherein a hot-side working medium inlet of the steam generator is connected with a flue gas flow passage outlet of the composite heat transfer regenerator, and flue gas is discharged from the flue gas flow passage outlet of the composite heat transfer regenerator. And a steam outlet of the steam generator is connected with an air flow channel inlet of the composite heat transfer regenerator or an air flow channel outlet of the composite heat transfer regenerator. When the steam outlet of the steam generator is connected with the air runner inlet of the composite heat transfer regenerator, the water steam generated by the steam generator and the compressed air from the air compressor enter the air runner of the composite heat transfer regenerator together, and the water steam flows out of the air runner outlet after being heated by the composite heat transfer regenerator. When the steam outlet of the steam generator is connected with the air flow passage outlet of the composite heat transfer regenerator, the water steam generated by the steam generator is mixed with the air from the air flow passage outlet of the composite heat transfer regenerator, and the mixed water steam and the air enter the combustion chamber together.
Furthermore, the heat transfer pipe is provided with heat transfer fins on the outer side, so that the heat transfer area between the heat transfer pipe and the air and the heat transfer area between the heat transfer pipe and the flue gas side are increased, the heat transfer capability is improved, and the heat transfer temperature difference is reduced.
The compressor is a device capable of providing compressed gas; the turbine is a device which uses high-temperature compressed gas to do work; the heat regenerator is a device for recovering waste heat of exhaust smoke and heating compressed air so as to reduce the temperature of the exhaust smoke.
The invention carries out composite heat transfer through the heat transfer pipe and the heat transfer clapboard in the heat regenerator, improves the heat transfer efficiency of the heat regenerator, and has the main advantages that: the heat transfer coefficient is high, the heat exchange surface can be effectively expanded through the forms of fins and the like, and the system compactness can be effectively improved particularly for a gas-gas heat exchanger; good countercurrent heat exchange is realized, and the heat exchange temperature difference is improved; the shapes of the flue gas channel and the air channel are regular, the flow resistance is reduced, and the gas containing impurities is not easy to block.
Drawings
FIG. 1 is a schematic view of specific example 1;
FIG. 2 is a schematic view of the embodiment 2;
FIG. 3 is a schematic view of embodiment 3;
in the figure: 1, an air compressor; 2-air flow channel of composite heat transfer regenerator; 3-flue gas flow channel of the composite heat transfer regenerator; 4-a heat transfer separator; 5-heat transfer tubes; 6-a combustion chamber; 7-turbine; 8-a generator; 9-heat transfer fluid circulation pump; 10-steam generator.
Detailed Description
Example 1
As shown in fig. 1, the regenerative brayton cycle system includes a compressor 1, a composite heat transfer regenerator (including an air flow channel 2 and a flue gas flow channel 3), a combustion chamber 6, a turbine 7, and a generator 8, wherein the composite heat transfer regenerator has the air flow channel 2 and the flue gas flow channel 3. The outlet of the compressor 1 is connected with the inlet of the air flow passage 1 of the composite heat transfer regenerator, the outlet of the air flow passage 2 of the composite heat transfer regenerator is connected with the inlet of the turbine 7, the outlet of the turbine 7 is connected with the air inlet of the combustion chamber 6, and the outlet of the combustion chamber 6 is connected with the inlet of the flue gas flow passage 3 of the composite heat transfer regenerator. The turbine 7 is connected with the compressor 1 and the generator 8 through a shaft, and the generator 8 finally outputs electric energy to the outside.
The specific working process comprises the following steps: ambient air enters an inlet of the air compressor 1, compressed air enters an air flow channel 2 of the composite heat transfer regenerator after being compressed by the air compressor 1, the heated compressed air enters a turbine 7 to expand and do work, exhaust gas from an outlet of the turbine 7 enters an air inlet of a combustion chamber 6, fuel enters a fuel inlet of the combustion chamber 6 to perform combustion reaction with the exhaust gas of the turbine 7 to produce high-temperature flue gas, the high-temperature flue gas enters an inlet of a flue gas flow channel 3 of the composite heat transfer regenerator, and the cooled flue gas is discharged from an outlet of a flue gas flow channel 3 of the composite heat transfer regenerator.
The heat of the high-temperature flue gas in the flue gas channel 3 is transferred to the compressed air in the air channel 2 through the heat transfer partition plate 4. The heat transfer pipe 5 passes through the flue gas flow passage 3 and the air flow passage 2. The heat transfer pipe 5 is internally provided with heat transfer fluid which absorbs the heat of the high-temperature flue gas in the flue gas channel 3 when flowing through the part of the heat transfer pipe in the flue gas channel 3; heating the compressed air in the air flow passage 2 while the heat transfer fluid flows through the heat transfer pipe portion located in the air flow passage 2; the heat transfer fluid continuously absorbs heat in the flue gas flow passage 3 and releases heat in the air flow passage 2 by the action of the heat transfer fluid circulating pump 9. Through the mode, the heat of the high-temperature flue gas in the flue gas channel 3 is jointly transferred to the compressed air in the air channel 2 through the heat transfer partition plate 4 and the heat transfer pipe 5, and the heat transfer rate is improved.
The heat transfer fluid in the heat transfer pipe 5 is one or more of heat transfer oil, molten salt, liquid metal, water, hydrogen, helium, air and carbon dioxide. The fuel needed by the combustion chamber 6 is one or more of natural gas, synthesis gas, biomass gasified gas, coal, petroleum, biomass, combustible waste and industrial waste gas.
Example 2
As shown in fig. 2, the regenerative brayton cycle system includes a compressor 1, a composite heat transfer regenerator (including an air flow channel 2 and a flue gas flow channel 3), a combustion chamber 6, a turbine 7, and a generator 8, wherein the composite heat transfer regenerator has the air flow channel 2 and the flue gas flow channel 3. The outlet of the compressor 1 is connected with the inlet of the air flow channel 1 of the composite heat transfer regenerator, the outlet of the air flow channel 2 of the composite heat transfer regenerator is connected with the air inlet of the combustion chamber 6, the outlet of the combustion chamber 6 is connected with the inlet of the turbine 7, and the outlet of the turbine 7 is connected with the inlet of the flue gas flow channel 3 of the composite heat transfer regenerator. The turbine 7 is connected with the compressor 1 and the generator 8 through a shaft, and the generator 8 finally outputs electric energy outwards.
The specific working process is as follows: ambient air enters an inlet of the compressor 1, compressed air enters an air flow channel 2 of the composite heat transfer regenerator after being compressed by the compressor 1, heated compressed air enters an air inlet of a combustion chamber 6, fuel enters from a fuel inlet of the combustion chamber 6 and reacts and combusts with the compressed air to generate high-temperature flue gas, the high-temperature flue gas enters a turbine 7 to expand and do work, exhaust gas from an outlet of the turbine 7 enters an inlet of a flue gas flow channel 3 of the composite heat transfer regenerator, and cooled flue gas is discharged from an outlet of the flue gas flow channel 3 of the composite heat transfer regenerator.
The heat of the high-temperature flue gas in the flue gas channel 3 is transferred to the compressed air in the air channel 2 through the heat transfer partition plate 4. The heat transfer pipe 5 passes through the flue gas flow passage 3 and the air flow passage 2. The heat transfer pipe 5 is internally provided with heat transfer fluid which absorbs the heat of the high-temperature flue gas in the flue gas channel 3 when flowing through the part of the heat transfer pipe in the flue gas channel 3; heating the compressed air in the air flow passage 2 while the heat transfer fluid flows through the heat transfer pipe portion located in the air flow passage 2; the heat transfer fluid continuously absorbs heat in the flue gas channel 3 and releases heat in the air channel 2 under the action of the heat transfer fluid circulating pump 9. Through the mode, the heat of the high-temperature flue gas in the flue gas channel 3 is transferred to the compressed air in the air channel 2 through the heat transfer partition plate 4 and the heat transfer pipe 5, so that the heat transfer rate is improved.
The heat transfer fluid in the heat transfer pipe 5 is one or more of heat transfer oil, molten salt, liquid metal, water, hydrogen, helium, air and carbon dioxide. The fuel required by the combustion chamber 6 is one or more of natural gas, synthesis gas, biomass gasification gas, coal, petroleum, biomass, combustible waste and industrial waste gas.
Example 3
As shown in fig. 3, a steam generator 10 is added based on embodiment 2. The flue gas discharged from the outlet of the flue gas flow channel 3 of the composite heat transfer regenerator enters the working medium inlet at the hot side of the steam generator 10, water enters from the water working medium inlet of the steam generator 10, is heated by the flue gas to generate steam, flows out from the steam outlet of the steam generator 10, is mixed with the compressed air from the outlet of the air compressor 1, enters the inlet of the air flow channel 2 of the composite heat transfer regenerator together, and is further preheated. This scheme can utilize water working medium to absorb the heat that the afterbody was discharged fume, reduces the fume emission temperature, improves system thermal efficiency and power density.
The above-mentioned embodiments 1 to 3 are only some embodiments of the present invention, and it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these embodiments. Those skilled in the art should also realize that such modifications and substitutions do not depart from the spirit of the present invention and its equivalents. Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (10)
1. A regenerative Brayton cycle system is characterized by comprising a gas compressor, a composite heat transfer regenerator, a turbine and a combustion chamber, wherein the composite heat transfer regenerator comprises an air flow channel and a flue gas flow channel, the middle of the air flow channel and the middle of the flue gas flow channel are separated by a heat transfer clapboard, the composite heat transfer regenerator is provided with at least one or more heat transfer tubes, the heat transfer tubes penetrate through the air flow channel and the flue gas flow channel, heat transfer fluid is arranged in the heat transfer tubes, heat of high-temperature flue gas in the flue gas flow channel is transferred to air in the air flow channel through the heat transfer clapboard and the heat transfer tubes, an outlet of the gas compressor is connected with an inlet of the air flow channel of the composite heat transfer regenerator, an outlet of the air flow channel of the composite heat transfer regenerator is connected with an inlet of the turbine, an outlet of the combustion chamber is connected with an inlet of the flue gas flow channel of the composite heat transfer regenerator, flue gas is discharged from an outlet of the flow channel of the composite heat transfer regenerator, and fuel enters from a fuel inlet of the combustion chamber.
2. A regenerative Brayton cycle system is characterized by comprising a gas compressor, a composite heat transfer regenerator, a turbine and a combustion chamber, wherein the composite heat transfer regenerator comprises an air flow channel and a flue gas flow channel, the middle of the air flow channel and the middle of the flue gas flow channel are separated by a heat transfer clapboard, the composite heat transfer regenerator is provided with at least one or more heat transfer tubes, the heat transfer tubes penetrate through the air flow channel and the flue gas flow channel, heat transfer fluid is arranged in the heat transfer tubes, heat of high-temperature flue gas in the flue gas flow channel is transferred to air in the air flow channel through the heat transfer clapboard and the heat transfer tubes, an outlet of the gas compressor is connected with an inlet of the air flow channel of the composite heat transfer regenerator, an outlet of the air flow channel of the composite heat transfer regenerator is connected with an air inlet of the combustion chamber, an outlet of the combustion chamber is connected with an inlet of the turbine, the flue gas is discharged from an outlet of the flow channel of the composite heat transfer regenerator, and fuel enters from a fuel inlet of the combustion chamber.
3. A regenerative brayton cycle system in accordance with either of claims 1 or 2, wherein said heat transfer fluid flows within said heat transfer tubes to absorb heat from the hot flue gases in said flue gas path as said heat transfer fluid flows through said heat transfer tubes in said flue gas path; the air in the air flow passage is heated as the heat transfer fluid flows through the heat transfer tube in the air flow passage.
4. The regenerative brayton cycle system according to any one of claims 1 or 2, further comprising a generator, wherein the turbine is connected with the compressor and the generator through a shaft, the generator finally outputs electric energy to the outside, the heat transfer fluid is one or more of heat transfer oil, molten salt, liquid metal, water, hydrogen, helium, air and carbon dioxide, and the fuel required by the combustion chamber is one or more of natural gas, synthesis gas, biomass gasification gas, coal, petroleum, biomass, combustible waste and industrial waste gas.
5. A regenerative brayton cycle system in accordance with any of claims 1 or 2, further comprising a gasifier, wherein a gasification gas outlet of said gasifier is connected to a fuel inlet of said combustion chamber.
6. The regenerative Brayton cycle power generation system according to claim 5, wherein the gasified gas outlet of the gasifier is divided into two paths, one path is connected to the fuel inlet of the combustion chamber, and the other path is connected to the purifier inlet.
7. The regenerative Brayton cycle system according to any one of claims 1 or 2, further comprising a waste heat utilization device, wherein the flue gas flow passage outlet of the composite heat transfer regenerator is connected with the flue gas inlet of the waste heat utilization device.
8. The Brayton cycle system of claim 1 or 2, further comprising a steam generator, wherein a hot side working medium inlet of the steam generator is connected to a flue gas flow passage outlet of the composite heat transfer regenerator, flue gas is discharged from the flue gas flow passage outlet of the composite heat transfer regenerator, a steam outlet of the steam generator is connected to an air flow passage inlet of the composite heat transfer regenerator, and water vapor generated by the steam generator enters the air flow passage of the composite heat transfer regenerator together with compressed air from the compressor.
9. The Brayton cycle system according to any one of claims 1 or 2, further comprising a steam generator, wherein a hot side working medium inlet of the steam generator is connected with a flue gas flow passage outlet of the composite heat transfer regenerator, flue gas is discharged from the flue gas flow passage outlet of the composite heat transfer regenerator, a steam outlet of the steam generator is connected with an air flow passage outlet of the composite heat transfer regenerator, and water steam generated by the steam generator is mixed with air from the air flow passage outlet of the composite heat transfer regenerator and then enters the combustion chamber together after being mixed.
10. A regenerative brayton cycle system in accordance with any of claims 1 or 2, characterized in that said heat transfer tubes have heat transfer fins on the outside to increase the heat transfer area to the air and flue gas side.
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| CN202110385817.5A CN115199370A (en) | 2021-04-11 | 2021-04-11 | Backheating type Brayton cycle system |
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| CN202110385817.5A CN115199370A (en) | 2021-04-11 | 2021-04-11 | Backheating type Brayton cycle system |
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| CN115199370A true CN115199370A (en) | 2022-10-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115492655A (en) * | 2022-11-07 | 2022-12-20 | 常州环能涡轮动力股份有限公司 | Power generation system and power generation method based on biomass and turbocharger |
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| CN2395243Y (en) * | 1999-11-23 | 2000-09-06 | 杨本洛 | Hot air backflow compound phase changing heat exchanger |
| CN1274830A (en) * | 1999-05-21 | 2000-11-29 | 庄骏 | Method and equipment utilizing afterheat of high-temperature waste gas from cement kiln |
| KR20120117713A (en) * | 2012-09-11 | 2012-10-24 | 석 규 이 | Exhaust gas waste heat recovery system |
| US8858223B1 (en) * | 2009-09-22 | 2014-10-14 | Proe Power Systems, Llc | Glycerin fueled afterburning engine |
| US20180274786A1 (en) * | 2015-09-30 | 2018-09-27 | IFP Energies Nouvelles | Combustion chamber of a turbine, in particular a thermodynamic cycle turbine with recuperator, for producing energy, in particular electrical energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274830A (en) * | 1999-05-21 | 2000-11-29 | 庄骏 | Method and equipment utilizing afterheat of high-temperature waste gas from cement kiln |
| CN2395243Y (en) * | 1999-11-23 | 2000-09-06 | 杨本洛 | Hot air backflow compound phase changing heat exchanger |
| US8858223B1 (en) * | 2009-09-22 | 2014-10-14 | Proe Power Systems, Llc | Glycerin fueled afterburning engine |
| KR20120117713A (en) * | 2012-09-11 | 2012-10-24 | 석 규 이 | Exhaust gas waste heat recovery system |
| US20180274786A1 (en) * | 2015-09-30 | 2018-09-27 | IFP Energies Nouvelles | Combustion chamber of a turbine, in particular a thermodynamic cycle turbine with recuperator, for producing energy, in particular electrical energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115492655A (en) * | 2022-11-07 | 2022-12-20 | 常州环能涡轮动力股份有限公司 | Power generation system and power generation method based on biomass and turbocharger |
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Application publication date: 20221018 |