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Method for gasification and compression of crushed coal

A crushed coal pressurized gasification and coal gas technology, applied in the manufacture of combustible gas, petroleum industry, etc., can solve the problems of large carbon dioxide emissions, large water vapor consumption, and large energy consumption, so as to reduce CO2 emissions and reduce The effect of water vapor consumption and lower yield

Inactive Publication Date: 2012-08-22
SHANXI LUAN MINING GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The gasification agent of the current crushed coal pressurized gasification process is composed of water vapor and pure oxygen. The consumption of water vapor is large, the gas waste water is large, the temperature of the crude gas and the hydrogen-carbon ratio of the gas are high, the energy consumption is large, and the emission of carbon dioxide is large.

Method used

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Examples

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Embodiment 1

[0044] A pressurized gasification method for pulverized coal. Under pressurized conditions, the raw coal is gasified into crude gas through the reverse continuous contact reaction between the gasification agent and the raw coal. The gasification agent is composed of carbon dioxide, water vapor and pure oxygen. The weight ratio of carbon dioxide, water vapor and pure oxygen is 0.47:3.4:1, the gasification reaction pressure is 3MPa, and the volume percentage of each component of crude gas is CO 22%-27%, CH 4 7%-9%, CO 2 26%-30%, O 2 0.2%-0.4%, H 2 35.5%-38.5%.

Embodiment 2

[0046] A pressurized gasification method for pulverized coal. Under pressurized conditions, the raw coal is gasified into crude gas through the reverse continuous contact reaction between the gasification agent and the raw coal. The gasification agent is composed of carbon dioxide, water vapor and pure oxygen. The weight ratio of carbon dioxide, water vapor and pure oxygen is 0.4:3.6:1, the gasification reaction pressure is 3MPa; the volume percentage of each component of crude gas is CO 22%-27%, CH 4 7%-9%, CO 2 26%-30%, O 2 0.2%-0.4%, H 2 35.5%-38.5%.

Embodiment 3

[0048]A pressurized gasification method for pulverized coal. Under pressurized conditions, the raw coal is gasified into crude gas through the reverse continuous contact reaction between the gasification agent and the raw coal. The gasification agent is composed of carbon dioxide and water vapor and pure oxygen. The weight ratio of carbon dioxide, water vapor and pure oxygen is 0.52:3.2:1, the gasification reaction pressure is 3MPa; the volume percentage of each component of crude gas is CO 22%-27%, CH 4 7%-9%, CO 2 26%-30%, O 2 0.2%-0.4%, H 2 35.5%-38.5%.

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Abstract

The invention relates to a method for gasification and compression of crushed coal, which belongs to the technical field of continuous gasification by compression; the invention aims to provide a method for gasification and compression of crushed coal for changing components of gasification agent, reducing consumption of water vapor, and lowering exhaust of carbon dioxide; according to the technical scheme, gasification agent consists of carbon dioxide, water vapor and pure oxygen, the ratio of weight portions of carbon dioxide to water vapor to pure oxygen is (0.4-0.52):(3.2-3.6):1; according to the method, CO2 is used for replacing part of water vapor in gasification agent to react with a raw material coal, the consumption of water vapor is reduced, the output of coal gas waste water is reduced, the temperature of coal gas of gasifier products and the ratio of hydrogen to carbon are lowered, so that the energy consumption of a system is effectively reduced, and the exhaust of CO2 is lowered at the same time.

Description

technical field [0001] The invention relates to a pressurized gasification method for crushed coal, which belongs to the technical field of pressurized continuous gasification. Background technique [0002] The crushed coal pressurized gasification technology mainly adopts the moving bed crushed coal pressurized gasification method, that is, under the condition of high temperature and high pressure, the gasification agent composed of water vapor and pure oxygen reacts with the raw coal in reverse and continuous contact to convert the gas It is converted into gases containing hydrogen, carbon monoxide, carbon dioxide, methane, etc. After cooling, purification, and conversion, these gases can be used as raw material gases for the production of chemicals, oil products, fertilizers, and city gas. [0003] The gasification agent of the current crushed coal pressurized gasification process is composed of water vapor and pure oxygen. The consumption of water vapor is large, the was...

Claims

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Application Information

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IPC IPC(8): C10J3/16C10J3/60
Inventor 刘斌冯永发刘海文隋竞刘俊义马军祥王海贝孙德良李亮余轩
Owner SHANXI LUAN MINING GRP
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