IMPROVED PROCESS FOR THE MANUFACTURE OF POLYPHENOLS
    6.
    发明授权
    IMPROVED PROCESS FOR THE MANUFACTURE OF POLYPHENOLS 有权
    改进工艺用于生产多酚

    公开(公告)号:EP2021311B1

    公开(公告)日:2011-08-10

    申请号:EP06752299.5

    申请日:2006-05-04

    IPC分类号: C07C37/20

    CPC分类号: C07C37/20 C07C39/16

    摘要: An improved process for the manufacture of a polyphenol compound such as bisphenol-A by introducing into a reaction zone a phenolic compound reactant, a carbonyl compound reactant, and a catalyst promoter comprising bismethylthiopropane added to the reaction system in certain specific locations, and reacting the ingredients within the reaction zone in the presence of an acid catalyst.

    PROCESS FOR PRODUCING CUMENE
    10.
    发明公开
    PROCESS FOR PRODUCING CUMENE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON CUMOL

    公开(公告)号:EP2867191A1

    公开(公告)日:2015-05-06

    申请号:EP12735700.2

    申请日:2012-06-27

    IPC分类号: C07C2/66 C07C7/04 C07C15/085

    摘要: A process is described for producing cumene comprising contacting benzene and a C3 alkylating agent under alkylation conditions with an alkylation catalyst in an alkylation zone to produce an alkylation effluent comprising cumene and alkylaromatic compounds heavier than cumene. Cumene is recovered from the alkylation effluent to leave a byproduct stream containing the alkylaromatic compounds heavier than cumene, which is separated into a polyisopropylbenzene-containing stream, an aromatic overhead stream, and a bottoms product. At least part of the aromatic overhead stream is recycled to the alkylation zone to reduce raw material consumption and improve cumene yield.

    摘要翻译: 描述了一种用于生产异丙苯的方法,包括在烷基化条件下使烷基化烷基化剂与烷基化催化剂在烷基化区中接触,以产生烷基化流出物,其包含异丙基苯和比枯烯重的烷基芳族化合物。 从烷基化流出物回收枯烯,留下含有比枯烯重的烷基芳族化合物的副产物流,将其分离成含聚异丙基苯的物流,芳族塔顶馏出物和塔底产物。 将至少部分芳族塔顶馏出物再循环到烷基化区以减少原料消耗并提高枯烯产率。