A PROCESS FOR PRODUCING MONO-ALKYLATED AROMATIC COMPOUND
    5.
    发明申请
    A PROCESS FOR PRODUCING MONO-ALKYLATED AROMATIC COMPOUND 审中-公开
    生产单烷基芳香化合物的方法

    公开(公告)号:WO2017213749A1

    公开(公告)日:2017-12-14

    申请号:PCT/US2017/027322

    申请日:2017-04-13

    摘要: The present disclosure relates to a process for producing a mono-alkylated aromatic compound using a treated catalyst made by a method of this invention is disclosed. The method comprises the steps of heating an untreated catalyst in the presence of a gaseous stream having a dew point temperature less than about 5°C to form a treated catalyst. The treatment is effective to improve the activity and selectivity of the catalyst.

    摘要翻译: 本发明涉及使用通过本发明方法制备的处理过的催化剂制备单烷基化芳族化合物的方法。 该方法包括以下步骤:在露点温度低于约5℃的气流存在下加热未处理的催化剂以形成处理过的催化剂。 该处理对于提高催化剂的活性和选择性是有效的。

    PROCESS FOR METHYLATING AROMATIC HYDROCARBONS
    7.
    发明申请
    PROCESS FOR METHYLATING AROMATIC HYDROCARBONS 审中-公开
    甲基化芳烃的方法

    公开(公告)号:WO2018067281A1

    公开(公告)日:2018-04-12

    申请号:PCT/US2017/051179

    申请日:2017-09-12

    摘要: In a process for producing paraxylene, a hydrocarbon feedstock comprising benzene and/or toluene is contacted with an alkylating reagent comprising methanol and/or dimethyl ether in an alkylation reaction zone under alkylation conditions in the presence of an alkylation catalyst to produce an alkylated product comprising xylenes. The alkylation catalyst comprises a molecular sieve having a Constraint Index ≤ 5, and the alkylation conditions comprise a temperature less than 500°C. At least part of the alkylated product is supplied to a paraxylene recovery unit to recover paraxylene and produce a paraxylene- depleted stream, which is then contacted with a xylene isomerization catalyst under conditions effective to isomerize xylenes in the paraxylene-depleted stream and produce an isomerized stream having a higher concentration of paraxylene than the paraxylene-depleted stream. At least part of the isomerized stream is then recycled to the paraxylene recovery unit to recover the paraxylene therein.

    摘要翻译: 在生产对二甲苯的方法中,使包含苯和/或甲苯的烃原料在烷基化反应区中在烷基化条件下在含有甲醇和/或二甲醚的烷基化试剂存在下与烷基化试剂 烷基化催化剂以生成包含二甲苯的烷基化产物。 烷基化催化剂包含约束指数≤5的分子筛,烷基化条件包括低于500℃的温度。 将至少一部分烷基化产物供给对二甲苯回收单元以回收对二甲苯并产生贫对二甲苯流,然后在有效使异构化对二甲苯流中的二甲苯异构化的条件下与二甲苯异构化催化剂接触并产生异构化 具有比对二甲苯去除物流更高浓度的对二甲苯的物流。 然后将至少一部分异构化物流循环到对二甲苯回收装置中以回收其中的对二甲苯。