Process for producing lower olefins from oxygenates

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United States of America

PATENT NO 12264118
APP PUB NO 20230118436A1
SERIAL NO

17906230

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Abstract

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A process for producing lower olefins from oxygenates includes the steps of contacting a feedstock comprising oxygenates with molecular sieve catalyst in fluidized bed reaction zone under effective conditions, to produce product including ethylene and/or propylene; the effective conditions include that in the fluidized bed reaction zone, the weights of catalysts having various carbon deposition amounts are controlled, calculated as the weight of the molecular sieve in the catalysts, to have the following proportions based on the total weight of the catalysts in the fluidized bed reaction zone: the proportion of the weight of the catalyst having a coke deposition amount of less than 3 wt % is 1-20 wt %; the catalyst having a coke deposition amount of from 3 wt % to less than 5 wt % represents 10 to 70 wt %; and the catalyst having a coke deposition amount from 5 wt % to 10 wt % represents 10 to 88 wt %.

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Patent Owner(s)

Patent OwnerAddress
CHINA PETROLEUM & CHEMICAL CORPORATION22A CHAOYANGMENBEI STREET CHAOYANG DISTRICT BEIJING 100728
SHANGHAI RESEARCH INSTITUTE OF PETROCHEMICAL TECHNOLOGY SINOPECNO 1658 PUDONG BEI ROAD PUDONG NEW AREA SHANGHAI 201208

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Cao, Jing Shanghai, CN 51 330
Gao, Pan Shanghai, CN 20 214
Jin, Yongming Shanghai, CN 7 14
Li, Xiaohong Shanghai, CN 96 551
Qi, Guozhen Shanghai, CN 20 44
Wang, Hongtao Shanghai, CN 114 502

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