Natural gas fuel cell power generation system and method adopting supercritical CO2 bottom cycle

A fuel cell and power generation system technology, applied in the direction of fuel cells, fuel cell additives, electrochemical generators, etc., can solve the problems of low bottom cycle efficiency, achieve simple system, reduce equipment volume, and improve power generation efficiency

Active Publication Date: 2019-02-15
HUANENG CLEAN ENERGY RES INST
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Problems solved by technology

[0005] The invention provides a method using supercritical CO 2 The bottoming cycle natural gas fuel cell power generation system and method solves the problem of low bottoming cycle efficiency in the existing natural gas fuel cell power generation system

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  • Natural gas fuel cell power generation system and method adopting supercritical CO2 bottom cycle

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Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention is described in further detail.

[0030] Such as figure 1 As shown, the invention provides a kind of using supercritical CO 2 Bottom cycle natural gas fuel cell power generation system, including fuel reformer 1, fuel cell 2, cathode air compressor 3, anode regenerator 4, cathode regenerator 5, air turbine 6, compressor 7, waste heat boiler 8 , pure oxygen burner 9, cryogenic air separation unit 10, oxygen compressor 11, CO2 Gas turbine 12, regenerator 13, tail gas condenser 14, gas-water separator 15, CO 2 Compressor 16, CO 2 Condenser 17, CO 2 A booster pump 18 and a steam turbine 19, wherein the outlet of the fuel reformer 1 is connected to the anode inlet of the fuel cell 2, the anode tail gas outlet of the fuel cell 2 is connected to the hot side inlet of the anode regenerator 4, and the heat of the anode regenerator 4 The side outlet is connected to the inlet of the pure oxygen burner 9 thro...

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Abstract

The invention provides a natural gas fuel cell power generation system and method adopting a supercritical CO2 bottom cycle. The system comprises a fuel reformer, a fuel cell, a cathode air compressor, an anode heat regenerator, a cathode heat feeding regenerator, an air turbine, a compressor, a waste heat boiler, a pure oxygen burner, a regenerator, a CO2 cooling and pressurizing device and a steam turbine; by adopting the structure, the power generation efficiency is further improved on the basis of high-efficiency power generation of a fuel cell; meanwhile, the bottom cycle adopts a supercritical carbon dioxide cycle power generation system, so that the system is simple and the equipment volume is greatly reduced; and the system also takes into account a CO2 capture function, and can realize the CO2 emission reduction of coal power generation efficiently at low cost.

Description

technical field [0001] The invention belongs to the technical field of natural gas power generation, in particular to a natural gas fuel cell power generation and supercritical CO 2 Cycle power generation system and method. Background technique [0002] The fuel cell power generation system can continuously convert the chemical energy in the fuel and oxidant directly into electrical energy through electrochemical reactions. Zero emission; there are no rotating moving parts in the fuel cell, small mechanical loss, low noise, fast response to load changes, little fluctuation in power generation efficiency during load changes, and good power supply stability. In addition, the fuel cell also has the characteristics of small size, simple structure and convenient maintenance. [0003] The supercritical carbon dioxide cycle power generation system is a new type of power generation technology. It is a Brayton cycle system with supercritical carbon dioxide as the working medium. Th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/04H01M8/04089H01M8/0612F01D15/10F01K23/10F02C3/00
CPCH01M8/04H01M8/04097H01M8/0618F01D15/10F01K23/10F02C3/00Y02E60/50
Inventor 周贤彭烁许世森钟迪李启明王保民
Owner HUANENG CLEAN ENERGY RES INST
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