China Petroleum & Chemical Corporation

Shanghai Research Institute of Petrochemical Technology, Sinopec

Yangdong Wang

Su Liu

Chang Liu

Haibo Zhou

Lin Zhang

Weimin Yang

Zaiku Xie

Weisheng Yang

Jiawei Teng

Yu Zhao

Hepan Lu

Hongxing Liu

Xian Lu

Wenqian Jiao

Junjie Su

Jing Dong

An integrated catalyst can be used in an olefin disproportionation reaction. The integrated catalyst contains a plurality of different integrated active phases. The relative positions among different active phases remain substantially unchanged during the olefin disproportionation reaction. The effective distance between respective bisecting planes of two adjacent different active phases is 0.5-5 mm, preferably 1-3 mm.

Catalyst granules used in olefin disproportionation reaction and preparation method therefor

A catalyst contains a metal oxide, and a molecular sieve, in a crystal form, having a topological pore structure. The metal oxide is centrally distributed on the surface of the molecular sieve. Grains of the molecular sieve are exposed to at least three families of crystal planes. The family of crystal plane with the largest pore size in topology is occupied by the metal oxide by no more than 30%, preferably no more than 20%, or no more than 10%.

Catalyst including molecular sieve having topological pore structure, preparation method therefor and use thereof

The invention relates to a molecular sieve composition, a process of preparing same and use thereof in the production of lower olefins. The molecular sieve composition comprises an aluminophosphate molecular sieve and a CO adsorbing component, both of which are present independently of each other. When the molecular sieve composition is used as a catalyst for producing lower olefins using synthesis gas as a raw material, the molecular sieve composition has the advantages of high selectivity to lower olefins and the like.

Molecular sieve composition, process of preparing same and use thereof

A process for producing ethylene includes the steps of: (1) catalytically cracking a raw material hydrocarbon to obtain a first stream containing propylene; (2) separating the first stream to obtain a C3 component stream; and (3) disproportionating the C3 component stream to obtain an ethylene stream. This process reduces the overall energy consumption of the production process and increases the total yield of the ethylene while obtaining a polymerization-grade ethylene.

Process for producing ethylene

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Shanghai, China

Yangdong Wang