Catalyst for producing low carbon olefin from synthesis gas and use method of catalyst

Abstract

The invention relates to a catalyst for producing low carbon olefin from synthesis gas and a use method of the catalyst for producing the low carbon olefin from the synthesis gas. According to the catalyst and the use method, the problems of low CO conversion rate and low carbon olefin selectivity in reaction for preparing low carbon olefin from the synthesis gas in the prior art are mainly solved. The catalyst for producing low carbon olefin from the synthesis gas comprises the following components in percentage by weight: (a) 5%-50% of an iron element or oxides of the iron element, (b) 4%-20% of at least one element selected from manganese and zirconium or oxides of the element, (c) 1%-10% of a bismuth element or oxides of the bismuth element and (d) 25%-90% of a carrier, wherein the carrier comprises the following components in parts by weight: (1) 15-40 parts of alpha-aluminum oxide, (2) 1-45 parts of calcium oxide, (3) 1-5 parts of titanium dioxide and (4) 1-20 parts of potassium oxide. According to the technical scheme, the problems are well solved; the catalyst can be applied to the industrial production for producing low carbon olefin from the synthesis gas by virtue of a fixed bed.

Description

technical field [0001] The invention relates to a catalyst for producing low-carbon olefins from synthesis gas and a use method thereof. Background technique [0002] Low-carbon olefins refer to olefins with carbon atoms less than or equal to 4. Low-carbon olefins represented by ethylene and propylene are very important basic organic chemical raw materials. With the rapid growth of my country's economy, the supply of low-carbon olefins has been in short supply for a long time. At present, the production of low-carbon olefins mainly adopts the petrochemical route of cracking light hydrocarbons (ethane, naphtha, light diesel oil). Due to the increasing shortage of global oil resources and the long-term high price of crude oil, the development of low-carbon olefins industry only relies on oil The tubular cracking furnace process with light hydrocarbons as raw materials will encounter more and more raw material problems, and the production process and raw materials of low-carbo...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the problem of low CO conversion rate and low selectivity of low-carbon olefins in the product in the technology of producing low-carbon olefins from syngas in the prior art, and provides a new catalyst for producing low-carbon olefins from syngas and Its use method, when the catalyst is used in the reaction of fixed-bed syngas to light olefins, it has the advantages of high conversion rate of CO and high selectivity of low-carbon olefins in the product

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