Method for producing propene for C4 and more olefin catalytic cracking

A technology of catalytic cracking and olefins, which is applied in the fields of hydrocarbon cracking, chemical recovery, organic chemistry, etc., and can solve the problems of low silicon and aluminum, and no catalyst stability investigation.
CN1611472AActive Publication Date: 2005-05-04CHINA PETROLEUM & CHEM CORP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA PETROLEUM & CHEM CORP
Publication Date
2005-05-04

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Abstract

The invention relates to a kind of method for manufacturing propylene by catalytic cracking alkene of no less than tetra carbon, which mainly solves the short catalyst regeneration period problem and the stability problems uninvolved in previous technique. The invention uses minor crystalline grain and molecular sieve with high silicon-aluminium ratio as the catalyst for catalytic cracking with alkene that no less than tetra carbon to manufacture propylene. According to the technique scheme that described above, the invention can solve the problems mentioned above excellently, and can be used in industrial production of manufacturing propylene by catalytic cracking with alkene.
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Description

technical field

[0001] The invention relates to a method for producing propylene by catalytic cracking of olefins of carbon four and above. Background technique

[0002] At present, there are a considerable number of C 4 and C 4 The above olefin feedstock. Influenced by changes in the chemical product market and transportation costs, on-site deep processing of these raw materials is a better way to utilize them. where C 4 and C 4 The conversion of the above olefins to propylene is a promising process. On the one hand, the process can utilize the relatively surplus and low value-added C 4 and C 4 The above olefin raw materials, on the other hand, can obtain widely used propylene products.

[0003] Document WO 9929805 proposes a 4 and C 4 The above method for producing propylene from olefins. The catalyst in this document uses SiO 2 / Al 2 O 3 ZSM-5 molecular sieve with a high silicon-aluminum ratio of 600-2000, the reaction temperat...

Claims

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