Fluidized bed reaction device and reaction method for coal catalytic gasification for producing methane-rich synthetic gas

A technology for methane synthesis gas and coal catalytic gasification, which is used in the gasification of granular/powdered fuels, the manufacture of combustible gases, and the production of bulk chemicals, which can solve the problems of low carbon conversion rate, low methane yield, and complex structure. , to achieve the effect of improving carbon conversion rate, simple and compact structure, and prolonging residence time
CN106590761AActive Publication Date: 2017-04-26CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2017-04-26

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Abstract

The invention relates to a fluidized bed reaction device and reaction method for coal catalytic gasification for producing methane-rich synthetic gas. The problems of low carbon conversion rate, low methane yield, high energy consumption and complex structure in the prior art are solved in the invention. The device is formed by a lower space gasification reaction segment and an upper space methane synthesis segment, the internal diameter of the upper space is greater than the internal diameter of the lower space, and the bottoms of the two spaces are respectively provided with a primary gas distributor and a secondary gas distributor. The method comprises the following steps: raw coal, a catalyst, an oxygen-containing gas and water vapor undergo a combustion gasification reaction in the lower space, synthetic gas generated in the gasification reaction is mixed with parts of circulating synthetic gas in the upper space, and a methanation reaction is carried out in order to generate the methane-rich synthetic gas. The device and the method well solve the problems, and can be applied to the field of coal-to-natural gas.
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Description

technical field

[0001] The present invention relates to a reaction device and method for coal gasification to produce methane, more specifically, the present invention relates to a device and method for producing methane-enriched gas by gasification and methanation reaction staged coal catalytic gasification. Background technique

[0002] Natural gas is a high-quality fuel and an important chemical raw material, with the advantages of safety, reliability, and environmental protection. With the rapid development of my country's economy and the acceleration of urbanization, the demand for natural gas is increasing. my country's own natural gas production cannot meet the demand for natural gas, and the contradiction between supply and demand has become increasingly prominent. The supply gap can only be made up by relying on imports, which has greatly affected my country's energy security. Given that my country is a large coal country with abundant coal output, coal consumption...

Claims

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