Process for selectively producing light olefins in a fluid catalytic cracking process from a naphtha/steam feed
摘要
A process for selectively producing C2-C4 olefins from a catalytically cracked or thermally cracked naphtha stream is disclosed. A mixture of the naphtha stream and a stream of steam is feed into a reaction zone where it is contacted with a catalyst containing from about 10 to 50 wt. % of a crystalline zeolite having an average pore diameter less than about 0.7 nanometers at reaction conditions which include temperatures from about 500 to 650 DEG C. and a hydrocarbon partial pressure from about 10 to 40 psia.
申请公布号
US6118035(A)
申请公布日期
2000.09.12
申请号
US19980072632
申请日期
1998.05.05
申请人
EXXON RESEARCH AND ENGINEERING CO.
发明人
FUNG, SHUN C.;CHEN, TAN-JEN;JANSSEN, MARCEL J. G.;WACHTER, WILLIAM A.;HENRY, BRIAN ERIC;ASPLIN, JOHN ERNEST