公开(公告)号：US20130296622A1

公开(公告)日：2013-11-07

申请号：US13465733

申请日：2012-05-07

申请人： LARRY L. IACCINO ,  S. MARK DAVIS ,  JOHN D.Y. OU ,  XIAOBO ZHENG

发明人： LARRY L. IACCINO ,  S. MARK DAVIS ,  JOHN D.Y. OU ,  XIAOBO ZHENG

IPC分类号： C07C2/86

CPC分类号： C07C2/864 ,  C10G9/005 ,  C10G9/36 ,  C10G11/00 ,  C10G29/205 ,  C10G35/00 ,  C10G57/005 ,  C10G2300/1092 ,  C10G2300/1096 ,  C10G2400/30 ,  C07C15/08

摘要： In a hydrocarbon upgrading process, a hydrocarbon feed is treated in at least one of a steam cracker, catalytic cracker, coker, hydrocracker, and reformer under suitable conditions to produce a first stream comprising olefinic and aromatic hydrocarbons. A second stream composed mainly of C4+ olefinic and aromatic hydrocarbons is recovered from the first stream and is fed together with a methylating agent to a reaction zone containing a catalyst under reaction conditions including a temperature of about 450° C. to about 700° C., such that aromatics components in the second stream undergo dealkylation, transalkylation and/or methylation and aliphatic components undergo cracking and aromatization to produce a third stream having an increased xylene content compared with said second stream and a C3− olefin by-product. The C3− olefin by-product is recovered and para-xylene is removed from at least part of said third stream.

摘要翻译： 在烃改质方法中，在合适条件下，在蒸汽裂化器，催化裂化器，焦化器，加氢裂化器和重整器中的至少一种中处理烃进料以产生包含烯烃和芳族烃的第一流。 从第一流回收主要由C4 +烯烃和芳烃组成的第二料流，并在包括约450℃至约700℃的温度的反应条件下与甲基化剂一起加入含有催化剂的反应区。 使得第二流中的芳烃组分经历脱烷基化，烷基转移和/或甲基化，并且脂族组分经历裂化和芳构化以产生与所述第二料流和C3-烯烃副产物相比具有增加的二甲苯含量的第三料流。 回收C3-烯烃副产物，并从至少部分所述第三料流中除去对二甲苯。