发明授权
US6118035A Process for selectively producing light olefins in a fluid catalytic
cracking process from a naphtha/steam feed
失效
在石脑油/蒸汽进料的流化催化裂化过程中选择性地生产轻质烯烃的方法
- 专利标题： Process for selectively producing light olefins in a fluid catalytic cracking process from a naphtha/steam feed
- 专利标题（中）： 在石脑油/蒸汽进料的流化催化裂化过程中选择性地生产轻质烯烃的方法
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申请号： US072632申请日： 1998-05-05
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公开(公告)号： US6118035A公开(公告)日： 2000-09-12
- 发明人: Shun C. Fung , Tan-Jen Chen , Marcel J. G. Janssen , William A. Wachter , Brian Eric Henry , John Ernest Asplin
- 申请人： Shun C. Fung , Tan-Jen Chen , Marcel J. G. Janssen , William A. Wachter , Brian Eric Henry , John Ernest Asplin
- 申请人地址： NY Florham Park
- 专利权人： Exxon Research and Engineering Co.
- 当前专利权人： Exxon Research and Engineering Co.
- 当前专利权人地址： NY Florham Park
- 主分类号： C07C4/02
- IPC分类号： C07C4/02 ; C07B61/00 ; C07C11/06 ; C10G9/26 ; C10G11/00 ; C10G11/05 ; C10G57/02 ; C07C4/06
摘要：
A process for selectively producing C.sub.2 -C.sub.4 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.degree. C. and a hydrocarbon partial pressure from about 10 to 40 psia.