A kind of method of methane carbon dioxide reforming to produce synthesis gas carbon-based catalyst

Abstract

A method for producing a carbon-based catalyst for synthesis gas by reforming methane and carbon dioxide, comprising the following steps: step 1, taking the coal direct liquefaction residue with a particle size of 60-80 mesh and a composite modifier according to the mass ratio of 1: (1-3) Mix and grind evenly; the composite modifier includes 90% to 98% alkali and 2% to 10% nitrate in terms of mass fraction; step 2, heat up the obtained uniformly ground mixture under an inert atmosphere for carbonization treatment; step 3 1. Cooling the carbonized mixture and washing it to neutrality; step 4, drying the mixture washed to neutrality to obtain a carbon-based catalyst. The present invention uses Shenhua coal direct liquefaction residue CLR as a raw material to obtain a carbon-based catalyst through carbonization treatment, effectively utilizes the main by-products during direct coal liquefaction, has a simple preparation method, and the prepared catalyst has a large specific surface area and is effective for methane carbon dioxide reforming reaction better catalytic activity.

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