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    Production of para-xylene by the methylation of benzene and/or toluene
    21.
    发明授权
    Production of para-xylene by the methylation of benzene and/or toluene 有权
    通过苯和/或甲苯的甲基化生产对二甲苯

    公开(公告)号：US08344197B2

    公开(公告)日：2013-01-01

    申请号：US12894778

    申请日：2010-09-30

    申请人： James R. Lattner ,  Mark P. Hagemeister ,  Jon Edmond Randolph Stanat ,  John Di-Yi Ou ,  Xiaobo Zheng ,  Lu Han

    发明人： James R. Lattner ,  Mark P. Hagemeister ,  Jon Edmond Randolph Stanat ,  John Di-Yi Ou ,  Xiaobo Zheng ,  Lu Han

    IPC分类号： C07C2/66

    CPC分类号： C07C2/864 ,  C07C2529/40 ,  Y02P20/52 ,  C07C15/08

    摘要： In a process for the production of para-xylene, methanol is preheated to a first temperature, an aromatic feedstock comprising toluene and/or benzene is preheated to a second temperature and the preheated methanol and aromatic feedstocks are fed to a reactor at a first methanol to aromatic feedstock molar ratio. The preheated aromatic feedstock is contacted with the preheated methanol under alkylation conditions in the reactor in the presence of a catalyst so that the methanol reacts with the aromatic feedstock to produce an effluent comprising para-xylene. During the reaction, a temperature is measured within the reactor and is compared with a predetermined optimal temperature. The methanol to aromatic feedstock molar ratio is then adjusted in a manner to reduce any difference between the measured and predetermined optimal temperatures in the reactor.

    摘要翻译： 在制备对二甲苯的方法中，将甲醇预热至第一温度，将包含甲苯和/或苯的芳族原料预热至第二温度，并将预热的甲醇和芳族原料以第一个甲醇 与芳烃原料摩尔比。 预热的芳族原料在催化剂存在下在反应器中在烷基化条件下与预热的甲醇接触，使得甲醇与芳族原料反应以产生包含对二甲苯的流出物。 在反应期间，在反应器内测量温度并与预定的最佳温度进行比较。 然后以降低反应器中测量的和预定的最佳温度之间的任何差异的方式调节甲醇与芳族原料的摩尔比。

    Production of Para-Xylene
    25.
    发明申请
    Production of Para-Xylene 有权
    对二甲苯的生产

    公开(公告)号：US20120316375A1

    公开(公告)日：2012-12-13

    申请号：US13487651

    申请日：2012-06-04

    申请人： Xiaobo Zheng ,  Mark P. Hagemeister ,  Timothy P. Bender ,  Robert G. Tinger

    发明人： Xiaobo Zheng ,  Mark P. Hagemeister ,  Timothy P. Bender ,  Robert G. Tinger

    IPC分类号： C07C1/22 ,  B01J19/00

    CPC分类号： B01J8/18 ,  B01J8/1827 ,  B01J2219/00006 ,  C07C2/864 ,  C07C5/2729 ,  C07C7/12 ,  C07C7/14 ,  C07C7/1485 ,  C07C2523/04 ,  C07C2529/40 ,  C07C2529/65 ,  C07C15/08

    摘要： The invention is a process for producing paraxylene, benzene and/or toluene is alkylated with methanol in the presence of a catalyst under conditions effective to convert said benzene and/or toluene to xylene and produce a product stream containing water, xylene and one or more phenolic impurities. The said product stream is separated into a water-rich stream and a xylene-rich stream containing one or more phenolic impurities and at least a portion of the xylene-rich stream is contacted with an aqueous solution of a base under conditions to remove at least some of the phenolic impurities from the xylene-rich stream portion.

    摘要翻译： 本发明是在有效将所述苯和/或甲苯转化为二甲苯的条件下，在催化剂存在下用甲醇烷基化的对二甲苯，苯和/或甲苯的方法，并产生含有水，二甲苯和一种或多种 酚类杂质。 将所述产物流分离成富含水的物流和含有一种或多种酚类杂质的富含二甲苯的物流，并且至少部分富含二甲苯的物流与碱的水溶液接触，以至少除去 一些来自富含二甲苯的料流部分的酚类杂质。