Low-carbon-emission composite cycle power generation system and operation method thereof

A technology of compound cycle power generation and operation method, which is applied in the directions of machines/engines, steam engine devices, gas turbine devices, etc., to achieve the effects of high thermal efficiency, solving carbon emission reduction problems, and compact structure

Pending Publication Date: 2021-11-16
SHANGHAI POWER EQUIP RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] On the other hand, as carbon emission requirements become more and more stringent, the long-term use of fossil fuels in conventional power generation systems has gradually exposed more problems

Method used

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  • Low-carbon-emission composite cycle power generation system and operation method thereof
  • Low-carbon-emission composite cycle power generation system and operation method thereof

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Effect test

Embodiment 1

[0069] This embodiment provides a low-carbon emission compound cycle power generation system and its operation method. The flow chart of the compound cycle power generation system is as follows figure 1 shown.

[0070] The combined cycle power generation system includes a hydrogen-fired gas turbine cycle subsystem 1, a supercritical carbon dioxide cycle subsystem 2, a waste heat recovery subsystem 3, and a circulating cooling water subsystem 4 connected in sequence;

[0071] The hydrogen gas turbine cycle subsystem 1 is an open cycle; the supercritical carbon dioxide cycle subsystem 2 is a closed cycle.

[0072] The hydrogen-burning gas turbine cycle subsystem 1 includes a hydrogen fuel supply unit 11, a hydrogen-burning combustion chamber 13, a gas turbine 14, an exhaust flap door 16, and an exhaust gas discharge device 17 connected in sequence; the hydrogen-burning gas turbine cycle subsystem 1 also includes an air compressor 12 connected to the hydrogen combustion chamber ...

Embodiment 2

[0085] This embodiment provides a low-carbon emission compound cycle power generation system and its operation method, and the compound cycle power generation system is the same as the compound cycle power generation system in Embodiment 1.

[0086] The operation method comprises the following steps:

[0087] (1) After the hydrogen fuel is processed by the hydrogen fuel supply unit 11, it is supplied to the hydrogen combustion chamber 13, where it reacts with the compressed air (compression ratio 20) provided by the air compressor 12 to generate high-temperature gas at 1450°C. Expansion work in the turbine 14 drives the gas generator 15 to generate electric energy; the relative internal efficiency of the gas turbine 14 reaches 92%;

[0088] (2) In step (1), the gas exhaust after expanding and doing work enters the carbon dioxide heater 23, heats the carbon dioxide working medium from the carbon dioxide regenerator 22, and makes it reach 550 ° C, and the heated carbon dioxide wor...

Embodiment 3

[0093] This embodiment provides a low-carbon emission compound cycle power generation system and its operation method, and the compound cycle power generation system is the same as the compound cycle power generation system in Embodiment 1.

[0094] The operation method comprises the following steps:

[0095] (1) The hydrogen fuel is supplied to the hydrogen combustion chamber 13 after being processed by the hydrogen fuel supply unit 11, and undergoes a combustion reaction with the compressed air (compression ratio 17) provided by the air compressor 12 to generate high-temperature gas at 1350°C. Expansion work in the turbine 14 drives the gas generator 15 to generate electric energy; the relative internal efficiency of the gas turbine 14 reaches 89%;

[0096] (2) In step (1), the gas exhaust after expanding and doing work enters the carbon dioxide heater 23, heats the carbon dioxide working medium from the carbon dioxide regenerator 22, and makes it reach 510 ° C, and the heat...

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Abstract

The invention provides a low-carbon-emission composite cycle power generation system and an operation method thereof. The composite cycle power generation system comprises a hydrogen-combustion gas turbine cycle subsystem, a supercritical carbon dioxide cycle subsystem, a waste heat recovery subsystem and a circulating cooling water subsystem which are connected in sequence, wherein the hydrogen-combustion gas turbine cycle subsystem is in an open cycle mode; and the supercritical carbon dioxide cycle subsystem is in a closed cycle mode. According to the composite cycle power generation system, a hydrogen-combustion gas turbine cycle is used as a top cycle, a supercritical carbon dioxide cycle is used as a bottom cycle, and the technical advantages of closed supercritical carbon dioxide cycle and hydrogen-combustion gas turbine cycle are exerted; a waste heat recovery system is assisted, and the problem of gradient comprehensive utilization of energy is solved; and meanwhile, high power generation efficiency and low pollutant emission of the power generation system are achieved, the application mode of the power generation system is optimized, and important significance on development of the low-carbon-emission power generation system exists.

Description

technical field [0001] The invention belongs to the technical field of power cycles, and relates to a cycle power generation system and an operation method thereof, in particular to a low-carbon emission compound cycle power generation system and an operation method thereof. Background technique [0002] The critical pressure of carbon dioxide is relatively moderate, and it has good stability and physical properties. It is non-toxic, abundant in reserves, and naturally occurring. It is considered to be one of the most promising energy transmission and energy conversion working fluids. The supercritical carbon dioxide power cycle has high cycle efficiency, compact structure, wide application range, and good application prospects. [0003] The supercritical carbon dioxide power cycle can be divided into two categories: one adopts the open direct combustion heating method, the supercritical carbon dioxide is directly heated to high temperature by the gas in the burner, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01K23/10F01K25/10F01K7/32F02C3/22F02C6/18F01K11/02
CPCF01K23/10F01K25/103F01K7/32F02C3/22F02C6/18F01K11/02
Inventor 王思远郝宁范雪飞高升徐前万震天
Owner SHANGHAI POWER EQUIP RES INST
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