公开(公告)号：US6004452A

公开(公告)日：1999-12-21

申请号：US968462

申请日：1997-11-14

申请人： Gary A Ash ,  Nhu Q Dao ,  Arnold J Gloyn ,  N J Haritatos ,  Paul I Hodgen ,  Stuart R MacPherson ,  Scott Gordon Morrison ,  Gerald J Nacamuli ,  Paul M Spindler ,  Bruce J Thom ,  Eric P Weber ,  Richard Wolpert

发明人： Gary A Ash ,  Nhu Q Dao ,  Arnold J Gloyn ,  N J Haritatos ,  Paul I Hodgen ,  Stuart R MacPherson ,  Scott Gordon Morrison ,  Gerald J Nacamuli ,  Paul M Spindler ,  Bruce J Thom ,  Eric P Weber ,  Richard Wolpert

IPC分类号： C07C15/08 ,  C10G59/06 ,  C10G61/00 ,  C10G51/06

CPC分类号： C10G61/00 ,  C07C15/08 ,  C10G59/06

摘要： A process is provided for producing high purity benzene and high purity paraxylene from a hydrocarbon feed. In one aspect, the process comprises: (a) reforming a hydrocarbon feed using either a monofunctional catalyst or a bifunctional catalyst to provide one or more reformate streams; (b) fractionating the reformate stream to provide a toluene stream, a benzene stream, and a xylene stream; (c) subjecting the toluene stream to disproportionation; (d) purifying the benzene stream by extraction followed by distillation to provide a high purity benzene product; and (e) purifying the xylene stream by simulated moving bed countercurrent adsorption followed by crystallization to provide a high purity paraxylene product.

摘要翻译： 提供了用于从烃进料生产高纯度苯和高纯度对二甲苯的方法。 一方面，该方法包括：（a）使用单官能催化剂或双功能催化剂重整烃进料以提供一种或多种重整产物流; （b）分馏重整油流以提供甲苯料流，苯料流和二甲苯料流; （c）使甲苯物流进行歧化; （d）通过提取纯化苯流，然后进行蒸馏以提供高纯度苯产物; 和（e）通过模拟移动床逆流吸附纯化二甲苯流，然后结晶以提供高纯度对二甲苯产物。