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IGCC (integrated gasification combined cycle) system for capturing CO2 by integrated oxygen ion transmission membrane oxygen-enriched combustion method

A technology of oxygen ion transport membrane and integrated oxygen ions, which is applied in the direction of gas turbine devices, machines/engines, mechanical equipment, etc., can solve the problems of large oxygen demand, increased energy consumption of air separation units, and decreased system efficiency, and achieve energy consumption Reduce, reduce exergy loss, facilitate the effect of separation

Inactive Publication Date: 2014-07-09
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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AI Technical Summary

Problems solved by technology

In an oxyfuel combustion system, due to the large demand for oxygen, the energy consumption of the air separation unit increases significantly, which eventually leads to a decrease in system efficiency

Method used

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  • IGCC (integrated gasification combined cycle) system for capturing CO2 by integrated oxygen ion transmission membrane oxygen-enriched combustion method
  • IGCC (integrated gasification combined cycle) system for capturing CO2 by integrated oxygen ion transmission membrane oxygen-enriched combustion method
  • IGCC (integrated gasification combined cycle) system for capturing CO2 by integrated oxygen ion transmission membrane oxygen-enriched combustion method

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Embodiment Construction

[0019] The invention provides an integrated oxygen ion transport membrane oxygen-enriched combustion method to capture CO 2 The IGCC system of the present invention will be further described below through the accompanying drawings and specific implementation methods.

[0020] The flow chart of the benchmark system is as figure 1 As shown: after the air is separated by the cryogenic air separation unit 11, the separated oxygen is divided into two paths, one path directly enters the combustion chamber 6 of the gas turbine, and the other path enters the coal gasification unit 1 after being mixed with water and coal, and then passes through the gas After cooler 2, dust removal unit 3, and acid gas removal unit 4, the synthesized clean gas enters the combustion chamber 6 of the gas turbine for combustion, and the combustion exhaust gas expands through the gas turbine 7 to drive the first generator 12 to generate electricity, and then passes through the waste heat boiler 8 The gene...

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Abstract

The invention belongs to the technical field of IGCC (integrated gasification combined cycle) power generation for capturing CO2 by an oxygen-enriched combustion method, and in particular relates to an IGCC system for capturing CO2 by an integrated OTM (oxygen ion transfer membrane) oxygen-enriched combustion method. On the basis of an IGCC system for capturing CO2 by adopting a deep cooling air separation oxygen-enriched combustion method, an integrated OTM unit, a coal gasification unit, a purification unit, a gas turbine, an afterheat boiler, a steam turbine and a CO2 recycling unit form a CO2 zero-emission system; the OTM unit is used for separating air, and obtained pure oxygen is mixed with carbon dioxide and then is conveyed into a combustion chamber of the gas turbine for combustion of purified gas. According to the IGCC system, the problem that the conventional IGCC system for capturing CO2 by the oxygen-enriched combustion method is low in efficiency is solved, low-energy-consumption CO2 recycling is realized, and high efficiency of the system is retained.

Description

technical field [0001] The invention belongs to the oxygen-enriched combustion method for capturing CO 2 The field of IGCC power generation technology, especially related to an integrated oxygen ion transport membrane oxygen-enriched combustion method to capture CO 2 The IGCC system. Background technique [0002] Currently, due to the powertrain CO 2 The greenhouse effect caused by emissions is becoming more and more serious, so CO 2 The capture, storage and utilization of sequestration has become a hot research topic both at home and abroad. Currently capturing CO 2 The methods mainly include pre-combustion capture, oxyfuel combustion and post-combustion capture, of which only oxyfuel combustion can achieve real CO 2 zero emissions. IGCC power station (Integrated Gasification Combined Cycle) is known as the cleanest coal-fired power station in the world. The oxygen-enriched combustion method refers to the use of O 2 / CO 2 The mixture replaces air as the oxidant, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02C6/00
Inventor 段立强孙思宇杨勇平
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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