WO2022156523A1 - Dispositif de puissance à cycle combiné gaz-vapeur à double combustible - Google Patents

Dispositif de puissance à cycle combiné gaz-vapeur à double combustible Download PDF

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Publication number
WO2022156523A1
WO2022156523A1 PCT/CN2022/000013 CN2022000013W WO2022156523A1 WO 2022156523 A1 WO2022156523 A1 WO 2022156523A1 CN 2022000013 W CN2022000013 W CN 2022000013W WO 2022156523 A1 WO2022156523 A1 WO 2022156523A1
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Prior art keywords
steam
compressor
gas
channel
high temperature
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PCT/CN2022/000013
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English (en)
Chinese (zh)
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李华玉
李鸿瑞
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李华玉
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Publication of WO2022156523A1 publication Critical patent/WO2022156523A1/fr

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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
    • 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
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C6/00—Combustion apparatus characterised by the combination of two or more combustion chambers or combustion zones, e.g. for staged combustion

Definitions

  • gasoline, diesel, natural gas and other fuels used are all high-quality and high-grade fuels; limited by one or more fuel properties, working principles, working medium, material properties, and component manufacturing levels, etc.
  • One factor is that low-grade liquid or gaseous fuels, as well as higher-grade coals, make it difficult to achieve high levels of heat-to-power conversion efficiency in conventional gas-steam power plants alone.
  • the present invention provides the rational collocation of low-grade fuel and high-grade fuel to realize learning from each other's strengths and complement each other's advantages, and greatly improve the thermal power conversion efficiency of low-grade fuel.
  • a dual-fuel gas-steam combined cycle power plant that reduces greenhouse gas emissions and effectively reduces fuel costs.
  • the main purpose of the present invention is to provide a dual-fuel gas-steam combined cycle power plant, and the specific content of the invention is explained as follows:
  • the combustion chamber also has a gas channel that communicates with the gas turbine through the heating furnace, and the gas turbine and the gas channel communicate with the outside through a high-temperature heat exchanger.
  • Condensation The compressor has a condensate pipeline that is connected to the evaporator through a booster pump, and then the evaporator has a steam channel that communicates with the high-temperature heat exchanger.
  • the compressor has a steam channel that communicates with the high-temperature heat exchanger.
  • the steam turbine also has a low-pressure steam channel that communicates with the evaporator and then is divided into two channels—the first channel is connected to the compressor and the second channel is communicated with the condenser; the condenser also has a cooling medium channel that communicates with the outside, and the steam turbine is connected to the compressor and connected to the outside.
  • the gas turbine is connected to the second compressor and transmits the power to form a dual-fuel gas-steam combined cycle power plant.
  • Dual-fuel gas-steam combined cycle power plant mainly composed of steam turbine, compressor, booster pump, condenser, evaporator, high temperature heat exchanger, second compressor, gas turbine, combustion chamber, heating furnace, heat source recuperation It consists of a low-grade fuel channel and a high-temperature regenerator; an external low-grade fuel channel is connected to the combustion chamber, an external high-grade fuel channel is connected to the heating furnace, and an external air channel is connected to the heating furnace through the heat source regenerator.
  • the heating furnace also There is a gas channel that communicates with the outside through the heat source regenerator, and an external air channel that communicates with the combustion chamber through the second compressor and high temperature regenerator.
  • the combustion chamber also has a gas channel that communicates with the gas turbine through the heating furnace.
  • the heat exchanger is connected, the high-temperature heat exchanger and the steam passage are connected with the steam turbine, and the steam turbine and the low-pressure steam passage are connected with the evaporator and then divided into two paths - the first path is connected with the compressor and the second path is connected with the condenser; condensation
  • the compressor also has a cooling medium channel to communicate with the outside, the steam turbine is connected to the compressor and transmits power, and the gas turbine is connected to the second compressor and transmits power to form a dual-fuel gas-steam combined cycle power plant.
  • Dual-fuel gas-steam combined cycle power plant mainly composed of steam turbine, compressor, booster pump, condenser, evaporator, high temperature heat exchanger, second compressor, gas turbine, combustion chamber, heating furnace, heat source recuperation It consists of a low-grade fuel channel and a high-temperature regenerator; an external low-grade fuel channel is connected to the combustion chamber, an external high-grade fuel channel is connected to the heating furnace, and an external air channel is connected to the heating furnace through the heat source regenerator.
  • the heating furnace also A gas channel is connected to the outside through the heat source regenerator, and an air channel is connected to the combustion chamber through the second compressor.
  • the combustion chamber also has a gas channel that communicates with the gas turbine through the high temperature regenerator and the heating furnace.
  • the gas turbine also has a gas channel.
  • the condenser is connected with the outside through the high temperature regenerator and the high temperature heat exchanger; the condenser has a condensate pipeline connected with the evaporator through the booster pump, and then the evaporator has a steam passage connected with the high temperature heat exchanger, and the compressor has a steam passage connected with the high temperature heat exchanger.
  • the heat exchanger is connected, the high-temperature heat exchanger and the steam passage are connected with the steam turbine, and the steam turbine and the low-pressure steam passage are connected with the evaporator and then divided into two paths - the first path is connected with the compressor and the second path is connected with the condenser; condensation
  • the compressor also has a cooling medium channel to communicate with the outside, the steam turbine is connected to the compressor and transmits power, and the gas turbine is connected to the second compressor and transmits power to form a dual-fuel gas-steam combined cycle power plant.
  • Dual-fuel gas-steam combined cycle power plant mainly composed of steam turbine, compressor, booster pump, condenser, evaporator, high temperature heat exchanger, second compressor, gas turbine, combustion chamber, heating furnace, heat source recuperation It consists of a low-grade fuel channel and a high-temperature regenerator; an external low-grade fuel channel is connected to the combustion chamber, an external high-grade fuel channel is connected to the heating furnace, and an external air channel is connected to the heating furnace through the heat source regenerator.
  • the heating furnace also There is a gas channel that communicates with the outside through the heat source regenerator, and an external air channel that communicates with the combustion chamber through the second compressor and high temperature regenerator.
  • the second path is communicated with the condenser; the condenser also has a cooling medium channel communicated with the outside, the steam turbine is connected to the compressor and transmits power, and the gas turbine is connected to the second compressor and transmits power to form a dual-fuel gas-steam combined cycle power plant.
  • Dual-fuel gas-steam combined cycle power plant mainly composed of steam turbine, compressor, booster pump, condenser, evaporator, high temperature heat exchanger, second compressor, gas turbine, combustion chamber, heating furnace, heat source recuperation It consists of a low-grade fuel channel and a high-temperature regenerator; an external low-grade fuel channel is connected to the combustion chamber, an external high-grade fuel channel is connected to the heating furnace, and an external air channel is connected to the heating furnace through the heat source regenerator.
  • the heating furnace also A gas channel is connected to the outside through the heat source regenerator, and an air channel is connected to the combustion chamber through the second compressor.
  • the combustion chamber also has a gas channel connected to the gas turbine through a high temperature regenerator and a heating furnace.
  • the condenser has a condensate pipeline connected with the evaporator through a booster pump, and then the evaporator has a steam channel and a high temperature heat exchanger.
  • the compressor has a steam channel that communicates with the high-temperature heat exchanger, the high-temperature heat exchanger also has a steam channel that communicates with the steam turbine, and the steam turbine has a low-pressure steam channel that communicates with the evaporator and then divides into two paths—the first path is connected to the compressor and the other is connected to the evaporator.
  • the second path is communicated with the condenser; the condenser also has a cooling medium channel communicated with the outside, the steam turbine is connected to the compressor and transmits power, and the gas turbine is connected to the second compressor and transmits power to form a dual-fuel gas-steam combined cycle power plant.
  • the second compressor also has an air channel that communicates with itself.
  • the combustion chamber is connected, the combustion chamber and the gas channel are connected with the gas turbine through the heating furnace, and the gas turbine and the gas channel are connected with the outside through the high temperature regenerator and the high temperature heat exchanger;
  • the condenser has a condensate pipeline through the booster pump and the evaporator.
  • the evaporator has a steam channel that communicates with the high-temperature heat exchanger
  • the compressor has a steam channel that communicates with the high-temperature heat exchanger
  • the high-temperature heat exchanger also has a steam channel that communicates with the steam turbine
  • the steam turbine has a low-pressure steam channel that communicates with the evaporator.
  • the first path is connected to the compressor and the second path is connected to the condenser; the condenser and the cooling medium channel are connected to the outside, the steam turbine is connected to the compressor and transmits power, and the gas turbine is connected to the second compressor and transmits power, A dual-fuel gas-steam combined cycle power plant is formed.
  • Dual-fuel gas-steam combined cycle power plant in any of the dual-fuel gas-steam combined cycle power plants described in items 1-6, the evaporator is connected with the outside by adding a gas channel to form dual-fuel gas - Steam combined cycle power plant.
  • the dual-fuel gas-steam combined cycle power plant is any one of the dual-fuel gas-steam combined cycle power plants described in items 1-6, adding a heater, and connecting the steam turbine with a low-pressure steam passage and evaporation. After being connected, it is divided into two paths—the first path is connected to the compressor and the second path is connected to the condenser. Adjusted so that the steam turbine has a low-pressure steam channel and is connected to the heater, and then divided into two paths—the first path is connected to the compressor and the second path is connected to the condenser. The second channel is connected with the condenser, the heater and the heated medium channel are connected with the outside, and the evaporator is connected with the outside by adding a gas channel to form a dual-fuel gas-steam combined cycle power plant.
  • the dual-fuel gas-steam combined cycle power plant is any one of the dual-fuel gas-steam combined cycle power plants described in items 1-7, adding a medium temperature regenerator, and connecting the evaporator with a steam channel and The connection of the high temperature heat exchanger is adjusted so that the evaporator has a steam passage connected with the high temperature heat exchanger through the medium temperature regenerator, and the compressor has a steam passage and the high temperature heat exchanger is adjusted so that the compressor has a steam passage through the medium temperature regenerator and the high temperature heat exchanger.
  • the heat exchanger is connected, and the low-pressure steam passage of the steam turbine is adjusted to communicate with the evaporator so that the steam turbine has a low-pressure steam passage and communicated with the evaporator through the medium-temperature regenerator to form a dual-fuel gas-steam combined cycle power plant.
  • the high heat exchanger has a steam passage connected with the steam turbine to adjust the high heat
  • the exchanger has a steam passage that communicates with the steam turbine through the combustion chamber to form a dual-fuel gas-steam combined cycle power plant.
  • the dual-fuel gas-steam combined cycle power plant is any one of the dual-fuel gas-steam combined cycle power plants described in items 1-11, adding a second booster pump and a low-temperature regenerator to replace the
  • the condenser has a condensate pipeline that communicates with the booster pump and is adjusted so that the condenser has a condensate pipeline that communicates with the low-temperature regenerator through the second booster pump, and the compressor adds a steam extraction channel to communicate with the low-temperature regenerator.
  • the condensate pipeline is connected with the booster pump to form a dual-fuel gas-steam combined cycle power plant.
  • Dual-fuel gas-steam combined cycle power plant mainly composed of steam turbine, compressor, booster pump, condenser, high temperature heat exchanger, gas turbine, combustion chamber, heating furnace and heat source regenerator; there are low-grade external
  • the fuel is communicated with the combustion chamber, the external high-grade fuel channel is communicated with the heating furnace, the external air channel is communicated with the heating furnace through the heat source regenerator, and the heating furnace and the gas channel are communicated with the outside through the heat source regenerator.
  • Figure 2/14 is a second principle thermodynamic system diagram of a dual-fuel gas-steam combined cycle power plant provided according to the present invention.
  • Fig. 6/14 is a sixth principle thermodynamic system diagram of a dual-fuel gas-steam combined cycle power plant provided according to the present invention.
  • Fig. 7/14 is the seventh principle thermodynamic system diagram of the dual-fuel gas-steam combined cycle power plant provided according to the present invention.
  • Fig. 8/14 is the eighth principle thermodynamic system diagram of the dual-fuel gas-steam combined cycle power plant provided according to the present invention.
  • Fig. 9/14 is the ninth principle thermodynamic system diagram of the dual-fuel gas-steam combined cycle power plant provided according to the present invention.
  • the steam flows through the steam turbine 1 to achieve thermal power conversion.
  • the steam at the outlet of the steam turbine 1 has a very low pressure and a small flow rate (corresponding to a small kinetic energy), and the mechanical energy required by the booster pump 3 can be mechanically transmitted by the steam turbine. 1 or provided externally.
  • the combustion chamber 9 is mainly used to generate gas working medium, and if necessary, heat exchange tube bundles can be set inside to heat other media.
  • the heat source regenerator 11 relates to the temperature grade of the gas (ie, the high temperature section of the heat source) in the heating furnace 10, and is listed separately.
  • 1Low-grade fuel refers to the fuel with a relatively low maximum temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) that can be formed by combustion products; compared with gasoline and diesel, waste gas is a low-grade fuel. From the concept of heat source, low-grade fuel refers to fuel whose combustion products are difficult to form a high-temperature heat source with higher temperature.
  • 2High-grade fuel refers to the fuel with the highest temperature (such as adiabatic combustion temperature or constant pressure combustion temperature) that can be formed by combustion products; for example, compared with coal gangue, coal slime and other fuels, high-quality coal, natural gas , methane, hydrogen, etc. are all high-grade fuels. From the concept of heat sources, low-grade fuels refer to fuels whose combustion products can form high-temperature heat sources at higher temperatures.
  • the regenerator 11 is communicated with the outside, and the outside has an air channel that communicates with the combustion chamber 9 through the second compressor 7.
  • the combustion chamber 9 also has a gas channel that communicates with the gas turbine 8 through the heating furnace 10. The gas turbine 8 and the gas channel are heated by high temperature.
  • the first external air flows through the heat source regenerator 11 and then enters the heating furnace 10 to participate in combustion
  • the external high-grade fuel enters the heating furnace 10
  • the gas generated by the heating furnace 10 emits heat to the gas generated from the combustion chamber 9 and flows through the heating furnace 10 and cools down, and then flows through the heat source regenerator 11 to release heat and cool down, and then is discharged to the outside;
  • the second compressor 7 After flowing through the second compressor 7, it enters the combustion chamber 9 to participate in the combustion, and the external low-grade fuel enters the combustion chamber 9, and the low-grade fuel and air are mixed in the combustion chamber 9 and burned into a higher temperature gas;
  • the combustion chamber 9 The produced gas flows through the heating furnace 10 to absorb heat and raise the temperature, flow through the gas turbine 8 to depressurize and perform work, and flow through the high-temperature heat exchanger 6 to release heat and cool down, and then discharge to the outside;
  • the condensate of the condenser 4
  • the dual-fuel gas-steam combined cycle power plant shown in Fig. 2/14 is implemented as follows:
  • the external low-grade fuel channel communicates with the combustion chamber 9, the external high-grade fuel channel communicates with the heating furnace 10, and the external air channel communicates with the heating furnace 10 through the heat source regenerator 11, and the heating furnace 10 also
  • a gas channel is connected to the outside through the heat source regenerator 11, and an air channel is connected to the combustion chamber 9 through the second compressor 7 and the high temperature regenerator 12.
  • the combustion chamber 9 also has a gas channel through the heating furnace 10 and the gas turbine 8.
  • the gas turbine 8 also has a gas channel to communicate with the outside through the high temperature regenerator 12 and the high temperature heat exchanger 6; the condenser 4 has a condensate pipeline that is connected to the evaporator 5 through the booster pump 3 and then the evaporator 5 has a steam channel.
  • the dual-fuel gas-steam combined cycle power plant shown in Fig. 4/14 is implemented as follows:
  • the low-pressure steam passage is communicated with the evaporator 5 and then divided into two routes—the first route is communicated with the compressor 2 and the second route is communicated with the condenser 4; the condenser 4 also has a cooling medium channel communicated with the outside, and the steam turbine 1 is connected to the compressor 2 And to transmit power, the gas turbine 8 is connected to the second compressor 7 and transmits the power.
  • the dual-fuel gas-steam combined cycle power plant shown in Figure 6/14 is implemented as follows:
  • the dual-fuel gas-steam combined cycle power plant shown in Figure 8/14 is implemented as follows:
  • the dual-fuel gas-steam combined cycle power plant shown in Figure 11/14 is implemented as follows:
  • the dual-fuel gas-steam combined cycle power plant shown in Figure 14/14 is implemented as follows:
  • the heating furnace 10 also has a gas channel that communicates with the outside through the heat source regenerator 11.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Engine Equipment That Uses Special Cycles (AREA)

Abstract

La présente invention concerne le domaine technique de la thermodynamique et de la puissance thermique, et concerne un dispositif de puissance à cycle combiné gaz-vapeur à double combustible. Un passage de combustible de faible qualité extérieur est en communication avec une chambre de combustion ; un passage de combustible de haute qualité intérieur est en communication avec un four de chauffage ; un passage d'air extérieur est en communication avec le four de chauffage au moyen d'un régénérateur de source de chaleur ; le four de chauffage est pourvu d'un passage de gaz en communication avec l'extérieur au moyen du régénérateur de source de chaleur ; le passage d'air extérieur est en communication avec la chambre de combustion au moyen d'un second compresseur et d'un régénérateur à haute température ; la chambre de combustion est en communication avec une turbine à gaz au moyen du four de chauffage ; la turbine à gaz est en communication avec la turbine à gaz per se au moyen du régénérateur à haute température ; la turbine à gaz est pourvue d'un passage de gaz en communication avec l'extérieur au moyen du régénérateur à haute température ; un condenseur est en communication avec un échangeur de chaleur à haute température au moyen d'une pompe de suralimentation et d'un évaporateur ; le compresseur est pourvu d'un passage de vapeur en communication avec l'échangeur de chaleur à haute température ; l'échangeur de chaleur à haute température est en communication avec le compresseur et le condenseur au moyen d'une turbine à vapeur et de l'évaporateur, respectivement ; le condenseur est pourvu d'un passage de milieu de refroidissement en communication avec l'extérieur ; la turbine à gaz est reliée au compresseur ; la turbine à gaz est reliée au second compresseur pour former le dispositif de puissance à cycle combiné gaz-vapeur à double combustible.
PCT/CN2022/000013 2021-01-25 2022-01-27 Dispositif de puissance à cycle combiné gaz-vapeur à double combustible WO2022156523A1 (fr)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686832A (en) * 1986-04-28 1987-08-18 Miliaras Emmanuel S Integrated fuel cleaning and power generation
CN1057315A (zh) * 1990-02-01 1991-12-25 曼内斯曼股份公司 产生机械能的方法和设备
US5319934A (en) * 1989-10-06 1994-06-14 Pyropower Corporation Combined gas turbine and steam turbine power plant for high efficiency use of low grade coal
CN101144396A (zh) * 2006-09-15 2008-03-19 马龙根 双燃料助燃型燃气-蒸汽联合循环系统
CN203717127U (zh) * 2013-12-13 2014-07-16 中国大唐集团科学技术研究院有限公司 一种燃气轮机发电系统
CN104533621A (zh) * 2015-01-06 2015-04-22 中国科学院工程热物理研究所 一种双燃料注蒸汽正逆燃气轮机联合循环
CN104929706A (zh) * 2014-05-28 2015-09-23 李华玉 联合循环供能系统
CN106014519A (zh) * 2016-05-20 2016-10-12 中国长江动力集团有限公司 蒸汽透平与有机朗肯循环工质透平双驱动系统

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4686832A (en) * 1986-04-28 1987-08-18 Miliaras Emmanuel S Integrated fuel cleaning and power generation
US5319934A (en) * 1989-10-06 1994-06-14 Pyropower Corporation Combined gas turbine and steam turbine power plant for high efficiency use of low grade coal
CN1057315A (zh) * 1990-02-01 1991-12-25 曼内斯曼股份公司 产生机械能的方法和设备
CN101144396A (zh) * 2006-09-15 2008-03-19 马龙根 双燃料助燃型燃气-蒸汽联合循环系统
CN203717127U (zh) * 2013-12-13 2014-07-16 中国大唐集团科学技术研究院有限公司 一种燃气轮机发电系统
CN104929706A (zh) * 2014-05-28 2015-09-23 李华玉 联合循环供能系统
CN104533621A (zh) * 2015-01-06 2015-04-22 中国科学院工程热物理研究所 一种双燃料注蒸汽正逆燃气轮机联合循环
CN106014519A (zh) * 2016-05-20 2016-10-12 中国长江动力集团有限公司 蒸汽透平与有机朗肯循环工质透平双驱动系统

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