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Coal gasification Fischer-Tropsch synthetic system and method with CO2 capturing function for generating fuel along with electricity

A coal gasification and CO2 technology, applied in the fields of energy and environment, can solve the problems of complex process flow and higher investment.

Inactive Publication Date: 2011-10-12
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, limited by the current level of commercial technology, the IGCC system has disadvantages such as high specific investment and complex process flow, so simply considering the capture of CO 2 will further affect its application

Method used

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  • Coal gasification Fischer-Tropsch synthetic system and method with CO2 capturing function for generating fuel along with electricity
  • Coal gasification Fischer-Tropsch synthetic system and method with CO2 capturing function for generating fuel along with electricity
  • Coal gasification Fischer-Tropsch synthetic system and method with CO2 capturing function for generating fuel along with electricity

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Embodiment Construction

[0035] The invention relates to a method for capturing CO 2 Coal gasification Fischer-Tropsch synthetic fuel / cogeneration system. The system proposed by the present invention is mainly combined with CO in the F-T synthesis process using Fe-based catalysts 2 thickening effect. Constitute a cogeneration system plan mainly composed of air separation unit, coal gasification and preliminary purification unit, synthesis gas desulfurization and decarbonization purification unit, F-T synthesis unit and power generation unit. Raw coal, water and oxygen from the air separation unit are gasified in the gasifier of the coal gasification unit to obtain high-temperature and high-pressure crude synthesis gas. The main components of the crude synthesis gas are CO, CO 2 、H 2 、H 2 O and H 2 S.

[0036] Different from the heat exchange form in the radiation heat exchanger or convection heat exchanger of the conventional coal gasification unit, the cooling side fluid in the crude synthesis ...

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Abstract

The invention relates to a coal gasification Fischer-Tropsch synthetic system and method with a CO2 capturing function for generating fuel along with electricity and belongs to the technical fields of energy and environment. The system contains an air separation unit (1), a pure-oxygen pressurization airflow bed coal gasification and preliminary purification unit (2), a synthesis gas desulfurization and decarburization purification unit (3), a single-pass Fischer-Tropsch synthetic unit (4) using a Fe-based catalyst, a power generation unit (5) of a pressurization gas boiler adopting a O2 / CO2 combustion technology and an ultra-supercritical steam turbine and a CO2 compression unit (6). Compared with the single-product system, the cogeneration system has the characteristics that the processflow is simple, the chemical / electricity ratio is flexible to adjust and CO2 can be captured. The system is especially suitable for the modification of the existing coal gasification Fischer-Tropsch synthetic system and the reduction of CO2 emission.

Description

technical field [0001] The present invention relates to a method capable of capturing CO 2 The coal gasification Fischer-Tropsch synthetic fuel / electricity cogeneration system and method belong to the fields of energy and environment technology and the like. Background technique [0002] my country's oil and gas resources are relatively scarce but coal resources are relatively abundant. Crude oil is heavily dependent on imports. The current annual import volume of crude oil exceeds 200 million tons, and the import dependence has exceeded 50%. From the structure of my country's crude oil consumption, it can be seen that it is mainly used to refine diesel, gasoline, etc. Liquid fuels account for about 60% of total crude oil consumption. If crude oil imports continue to develop at the average growth rate of the past 10 years, my country's crude oil consumption and import dependence will continue to increase, and the security threats to energy supply strategies will further inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/16C10J3/20C10J3/84C10G2/00C10G45/00C01B31/20F01D15/10F01K11/02C01B32/50
CPCY02A50/20Y02E20/18Y02P20/54
Inventor 岳晨韩东焦炜琦
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS