Integrated coal gasification solid oxide fuel cell-steam turbine combined power generation system and process

A solid oxide, fuel cell technology, used in fuel cells, fuel cell additives, fuel cell heat exchange, etc., can solve the problem of natural gas and coke oven gas not conforming to national conditions, etc., to improve power generation efficiency and energy utilization, Avoid corrosion and leakage problems and save investment

Active Publication Date: 2020-11-06
XINDI ENERGY ENG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Patent CN02111642.3 discloses a solid oxide fuel cell steam turbine combined power generation system using natural gas as fuel, and patent CN201310269160.1 discloses a solid oxide fuel cell-steam turbine-lithium bromide refrigeration system using coke oven gas as fuel Combined cooling, heating, and electricity cogeneration system of units, but natural gas and coke oven gas are not in line with China's national conditions where coal is the main energy source

Method used

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  • Integrated coal gasification solid oxide fuel cell-steam turbine combined power generation system and process

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Experimental program
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Embodiment 1

[0054] (1) 41750Nm 3 / min air passes into the air separation plant 1, and oxygen and nitrogen are separated in the air separation plant 1, and the oxygen is divided into two strands by the oxygen output pipeline of the air separation plant 1, one (flow 350Nm 3 / min) into the gasifier 2 and 0.6t / min coal for coal gasification reaction to generate synthesis gas, the temperature of the synthesis gas output from the gasification furnace 2 is 800-900°C, the composition of the synthesis gas is CO: 30-70V%, h 2 : 5~30V%, CO 2 : 5~15V%, H 2 O: 0~15V%, CH 4 : 0~5V%, H 2 S: 0-8V%. The synthesis gas enters the first heat exchanger 3 through the high-temperature gas inlet of the first heat exchanger 3 for heat exchange, and the temperature drops below 100°C, then is output from the high-temperature gas outlet of the first heat exchanger 3 and enters the electrostatic precipitator 4 , so that the particle content is less than 200mg / Nm 3 ; Then pass into the desulfurization device 5,...

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Abstract

The invention provides an integrated coal gasification solid oxide fuel battery-steam turbine combined power generation system and a process thereof. The system comprises an air separation device, a gasification furnace, a synthesis gas purification device, a solid oxide fuel battery, a gas-liquid separator, a steam boiler, a steam turbine, a generator and a heat exchanger which are connected through pipelines. The system uses synthesis gas prepared by reacting coal and oxygen as raw materials, uses the solid oxide fuel battery and the steam turbine to generate power jointly, and outputs a certain amount of hot water at the same time, and thus the problems of corrosion and leakage of molten carbonate fuel battery electrolyte are solved, the investment is saved, the energy is saved, and thethermal efficiency of the system is improved.

Description

technical field [0001] The invention belongs to the technical field of solid oxide fuel cells, and in particular relates to an integrated coal gasification solid oxide fuel cell-steam turbine combined power generation system and process. Background technique [0002] Fuel cell power generation technology is a power generation device that directly converts the chemical energy of fuel into electrical energy. According to the operating temperature of fuel cells, it is divided into high-temperature fuel cells and low-temperature fuel cells. High-temperature fuel cells include solid oxide fuel cells and molten carbonic acid. Salt fuel cells, low-temperature fuel cells include proton exchange membrane fuel cells, etc. Different from the traditional coal-fired power generation technology, the fuel cell uses electrochemical catalysis to directly convert the chemical energy in the fuel into electrical energy. There is no thermodynamic cycle in the process, and it is not limited by th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M8/04014H01M8/04029H01M8/0612
CPCH01M8/04022H01M8/04029H01M8/0612Y02E60/50
Inventor 苏海兰史立杰段妮丽司瑞刚李晨佳冯璐瑶常俊石
Owner XINDI ENERGY ENG TECH
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