Method for producing propene using silicoaluminophosphate molecular sieve catalytic cracking
Method for producing propene using silicoaluminophosphate molecular sieve catalytic cracking
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C07C 11/06, C07C 4/06, B01J 29/85
Tsinghua University
Wei Fei, Zhou Huaqun, Wang Yao, Gao Lei, Wang Zhanwen, Wang Dezheng
Key Words:
silicoaluminophosphate, molecular sieve, catalytic cracking, propene, producing method
The present invention relates to propylene producing catalytically cracking process, and is especially propylene producing process with catalytically cracking aluminum silicophosphate. In fixed bed or fluidized bed reactor and at the conditions of temperature 350-550 deg.c, pressure 0.1-0.3 MPa and space velocity 0.1-300 /hr, dry gas, C4 component and other material are cracked in catalyst containing aluminum silicophosphate molecular sieve SAPO-34. The output hydrocarbon mixture is separated to obtain destination product propylene before the other components are returned to the reactor for circular use. The process of the present invention has low reaction temperature, pressure near normal pressure, simple technological process and high propylene selectivity. The present invention can utilizes dry gas and C4 component effectively.

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