公开(公告)号：US6118035A

公开(公告)日：2000-09-12

申请号：US072632

申请日：1998-05-05

申请人： Shun C. Fung ,  Tan-Jen Chen ,  Marcel J. G. Janssen ,  William A. Wachter ,  Brian Eric Henry ,  John Ernest Asplin

发明人： Shun C. Fung ,  Tan-Jen Chen ,  Marcel J. G. Janssen ,  William A. Wachter ,  Brian Eric Henry ,  John Ernest Asplin

IPC分类号： C07C4/02 ,  C07B61/00 ,  C07C11/06 ,  C10G9/26 ,  C10G11/00 ,  C10G11/05 ,  C10G57/02 ,  C07C4/06

CPC分类号： C10G57/02 ,  C10G2400/20

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.

摘要翻译： 公开了一种从催化裂化或热裂解石脑油流中选择性生产C2-C4烯烃的方法。 将石脑油流和蒸汽流的混合物进料到反应区，在反应区中与含有约10至50wt。 ％的平均孔径小于约0.7纳米的结晶沸石在包括约500至650℃的温度和约10至40psia的烃分压的反应条件下进行。