Process for the Production of Xylenes and Light Olefins
    9.
    发明申请
    Process for the Production of Xylenes and Light Olefins 有权
    生产二甲苯和轻烯烃的方法

    公开(公告)号:US20130296623A1

    公开(公告)日:2013-11-07

    申请号:US13465750

    申请日:2012-05-07

    IPC分类号: C07C2/64

    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 to C12+ olefinic and aromatic hydrocarbons is recovered from the first stream and blended said second stream with a residual fraction from a steam cracker or an atmospheric or vacuum distillation unit to produce a third stream. The third stream is then catalytically pyrolyzed in a reactor under conditions effective to produce a fourth stream having an increased benzene and/or toluene content compared with said second stream and a C3-olefin by-product. The C3-olefin by-product is recovered and benzene and/or toluene are recovered from the fourth 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至C12 +烯烃和芳烃组成的第二料流,并将所述第二料流与来自蒸汽裂化器或大气压或真空蒸馏装置的残余馏分混合以产生第三料流。 然后在有效产生与所述第二料流和C3-烯烃副产物相比具有增加的苯和/或甲苯含量的第四料流的条件下,在反应器中催化热解。 回收C3-烯烃副产物,从第四料流回收苯和/或甲苯。