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Coal gasification pressurized molten carbonate fuel cell hybrid power system with CO2 recycling function

A molten carbonate and fuel cell technology, applied in molten electrolyte fuel cells, fuel cells, circuits, etc., to achieve improved efficiency, high energy conversion efficiency, and easy separation

Active Publication Date: 2014-11-19
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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Problems solved by technology

The IGCC power station is known as the cleanest coal-fired power station in the world, and the CO 2 Capture technologies mainly include pre-combustion capture, oxyfuel combustion, and post-combustion capture, but each technology has a certain degree of penalty on system efficiency

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  • Coal gasification pressurized molten carbonate fuel cell hybrid power system with CO2 recycling function
  • Coal gasification pressurized molten carbonate fuel cell hybrid power system with CO2 recycling function
  • Coal gasification pressurized molten carbonate fuel cell hybrid power system with CO2 recycling function

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Embodiment Construction

[0021] The invention provides a CO recovery 2 The coal gasification pressurized molten carbonate fuel cell composite power system, the present invention will be further described below through the description of the drawings and specific embodiments.

[0022] Process flow of the present invention such as figure 1 As shown: the oxygen separated by the cryogenic air separation unit 1 is divided into two paths through the third separator 28, one path is compressed by the second oxygen compressor 6 and enters the afterburner 16 to participate in pure oxygen combustion, and the other path passes through the first After being compressed by the oxygen compressor 7, it enters the gasifier 2 for coal gasification reaction with coal and water, and the synthesized crude gas passes through the gas cooler 3, the dust removal unit 4, and the acid gas removal unit 5 in turn to generate clean gas, which passes through the gas After the expander 9 expands and works and drives the fourth gener...

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Abstract

The invention belongs to the technical field of molten carbonate fuel cell hybrid power generation, and in particular relates to a coal gasification pressurized molten carbonate fuel cell hybrid power system with a CO2 recycling function. The hybrid power system is mainly composed of a deep cooling air separation unit, a coal gasification and purification unit, a molten carbonate fuel cell, a waste heat boiler, a steam turbine system and a CO2 recycling unit; coal synthesis gas is adopted for providing fuel to the fuel cell and CO2 in exhaust gas can be recycled; an afterburning chamber of the MCFC (molten carbonate fuel cell) adopts oxygen-enriched combustion, the products only include CO2 and H2O, the CO2 recycling energy consumption can be reduced as no N2 is blended in a CO2 separation and compression process; and the hybrid power system fully utilizes waste heat in the high-temperature exhaust gas of the MCFC can be fully utilized, and CO2 in the exhaust gas of the system can be captured in a low energy consumption manner.

Description

technical field [0001] The invention belongs to the technical field of composite power generation of molten carbonate fuel cell (MCFC for short), and particularly relates to a method for recovering CO 2 Coal Gasification Pressurized Molten Carbonate Fuel Cell Hybrid Power System. Background technique [0002] Currently, due to the powertrain CO 2 The greenhouse effect caused by emissions is becoming more and more serious, therefore, CO 2 The capture, storage and utilization of sequestration has become a hot research topic both at home and abroad. The IGCC power station is known as the cleanest coal-fired power station in the world, and the CO 2 Capture technologies mainly include pre-combustion capture, oxyfuel combustion, and post-combustion capture, but each technique imposes a certain degree of penalty on system efficiency. Molten carbonate fuel cells use electrochemical processes to generate electricity and are not limited by the Carnot cycle, so they have high energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M8/06F02C6/00F01D15/10
CPCH01M8/0668H01M8/14H01M2008/147Y02E60/50
Inventor 段立强孙思宇杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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