Synthesis-gas carbon-based catalyst preparation method by reforming methane and carbon dioxide

Abstract

The invention relates to a synthesis-gas carbon-based catalyst preparation method by reforming methane and carbon dioxide. The method comprises the following steps that 1 coal with the grain size ranging from 60-80 meshes is liquefied directly, the residue is mixed with a composite modifying agent according to a mass ratio of 1:1-3, and the mixture is grinded uniformly; the composite modifying agent comprises, by weight, 90-98% of alkali and 2-20% of nitrate; 2 the obtained mixture grinded uniformly is heated in inert atmosphere to conduct carbonizing treatment; 3 the mixture in which carbonizing treatment is conducted is cooled and washed to be neutral; 4 the mixture washed to be neutral is dried, and the carbon-based catalyst is obtained. According to the synthesis-gas carbon-based catalyst preparation method by reforming the methane and the carbon dioxide, the residue CLR of shenhua coal being liquefied directly is used as raw material, the carbon-based catalyst is obtained through the carbonizing treatment on the residue, the main by-product produced in the direct coal liquefaction process is utilized effectively, the preparation method is simple, and the prepared catalyst is large in specific surface area; the catalyst has a good catalytic activity on the reforming reaction of the methane and the carbon dioxide.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, in particular to a method for preparing carbon-based catalysts for syngas by reforming methane and carbon dioxide. Background technique [0002] Shenhua Ordos Coal-to-Liquid Company has achieved the successful operation of the demonstration project of direct coal liquefaction of one million tons. It is currently the only enterprise in the world that can directly liquefy coal. Since its official commercial operation in 2011, it has always maintained a In 2014, it put coal into operation for 302 days, produced 902,000 tons of oil products, and processed 4.013 million tons of coal. With the industrial application of direct coal liquefaction technology, the by-product liquefaction residue is huge, accounting for about 30% of the coal. At the same time, the liquefaction residue has the characteristics of high sulfur and high ash. important aspects of sex. [0003] The carbon dioxide reforming rea...

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Problems solved by technology

[0008] The object of the present invention is to aim at the defect in the above-mentioned prior art, provide a kind of method for methane carbon dioxide reforming system synthesis gas carbon-based catalyst, this preparation method operation process is simple, the catalyst that makes has higher catalytic activity, does not need Adding additional active metals can overcome the problems of non-precious metal catalysts that are prone to carbon deposition and deactivation and sulfur poisoning