Catalyst used for preparing synthetic natural gas by using coal derived synthesis gas and preparation method thereof

A technology for synthesizing natural gas and coal-based syngas, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of few industrialization achievements, Achieve high and stable activity, easy production and good repeatability
CN102407126AInactive Publication Date: 2012-04-11XIAMEN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAMEN UNIV
Publication Date
2012-04-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a catalyst used for preparing synthetic natural gas by using coal derived synthesis gas and a preparation method thereof, relates to a catalyst for preparing synthetic natural gas by hydrogenation and methanation of the coal derived synthesis gas, and provides a catalyst which has high and stable low temperature activity, can effectively improve the conversion rate of synthesis gas and the perpass yield of methane, and is used for preparing synthetic natural gas by using coal derived synthesis gas and a preparation method thereof. The catalyst is an ytterbium-promptingcoprecipitation nickel-zirconium base catalyst and comprises the main components Ni and Zr as well as an accelerator Yb. The method comprises the following steps of: mixing Ni(NO3)2.6H2O, Zr(NO3)4.3H2O and Yb(NO3)3.6H2O, then adding water in the mixture to prepare a solution A; dissolving K2CO3 into water to prepare a solution B; injecting the solutions A and B into a container for a reaction; filtering a feed liquid to obtain precipitates; and washing with deionized water until ion concentration of K<+> in a leacheate is below 0.1ppm, then filtering, drying, roasting to obtain the catalyst.
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Description

technical field

[0001] The invention relates to a catalyst for producing synthetic natural gas through hydromethanation of coal-based synthesis gas, in particular to a nickel-zirconium catalyst promoted by ytterbium. Background technique

[0002] Energy and the environment are one of the most concerned focuses in the world today, and the comprehensive and optimized utilization of fossil energy resources is imminent. my country is rich in coal, low in oil, and poor in gas. Optimizing the use of relatively abundant coal resources to make "Synthetic natural gas" (Synthetic natural gas, abbreviated as SNG) can not only increase the supply of SNG with high energy utilization rate, but also greatly reduce greenhouse gases. emissions, to achieve a win-win effect of energy and the environment.

[0003] The technical basis of SNG from coal is the methanation reaction, the so-called methanation reaction usually refers to CO or CO 2 Hydrogenation to CH under the action of a catalyst ...

Claims

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