Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant
    3.
    发明授权
    Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant 有权
    通过使用四氢化萘作为解吸剂的液相吸附分离间二甲苯与芳香烃进料的方法

    公开(公告)号:US07718842B2

    公开(公告)日:2010-05-18

    申请号:US11501230

    申请日:2006-08-09

    IPC分类号: C07C7/12

    CPC分类号: C07C7/13 C07C15/08

    摘要: The invention concerns a process for separating meta-xylene from a hydrocarbon feed comprising isomers containing 8 carbon atoms, comprising: a step for bringing said feed into contact with a faujasite type zeolite adsorbant, the percentage of water in the adsorbant being in the range 0 to 8% by weight and the adsorption temperature being from 25° C. to 250° C.; a desorption step employing a solvent selected from tetraline and its alkylated derivatives; a step for separating meta-xylene from the desorbant.

    摘要翻译: 本发明涉及从包含8个碳原子的异构体的烃原料中分离间二甲苯的方法,包括:使所述进料与八面沸石型沸石吸附剂接触的步骤,吸附剂中的水的百分比在0 至8重量%,吸附温度为25℃至250℃。 使用选自四氢萘及其烷基化衍生物的溶剂的解吸步骤; 从脱离剂中分离间二甲苯的步骤。

    Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant
    4.
    发明申请
    Process for separating meta-xylene from a feed of aromatic hydrocarbons by liquid phase adsorption using tetraline as a desorbant 有权
    通过使用四氢化萘作为解吸剂的液相吸附分离间二甲苯与芳香烃进料的方法

    公开(公告)号:US20070043253A1

    公开(公告)日:2007-02-22

    申请号:US11501230

    申请日:2006-08-09

    IPC分类号: C07C7/12

    CPC分类号: C07C7/13 C07C15/08

    摘要: The invention concerns a process for separating meta-xylene from a hydrocarbon feed comprising isomers containing 8 carbon atoms, comprising: a step for bringing said feed into contact with a faujasite type zeolite adsorbant, the percentage of water in the adsorbant being in the range 0 to 8% by weight and the adsorption temperature being from 25° C. to 250° C.; a desorption step employing a solvent selected from tetraline and its alkylated derivatives; a step for separating meta-xylene from the desorbant.

    摘要翻译: 本发明涉及从包含8个碳原子的异构体的烃原料中分离间二甲苯的方法,包括:使所述进料与八面沸石型沸石吸附剂接触的步骤,吸附剂中的水的百分比在0 至8重量%,吸附温度为25℃至250℃。 使用选自四氢萘及其烷基化衍生物的溶剂的解吸步骤; 从脱离剂中分离间二甲苯的步骤。