Process for preparing dimethyl ether
    9.
    发明申请
    Process for preparing dimethyl ether 审中-公开
    二甲醚的制备方法

    公开(公告)号:US20100240932A1

    公开(公告)日:2010-09-23

    申请号:US12310529

    申请日:2007-08-30

    IPC分类号: C07C41/09

    CPC分类号: C07C41/09 C07C43/043

    摘要: Disclosed is a process for preparing dimethyl ether, including a) reacting methanol containing 0-80 mol % of water in the presence of a dehydration catalyst, b) transferring the reaction product into a single separation column, thus separating dimethyl ether, water, and unreacted methanol, c) withdrawing dimethyl ether and withdrawing unreacted methanol from the sidestream of the single separation column, and d) recyling the unreacted methanol to the a) reacting the methanol. Dimethyl ether may be prepared from water-containing methanol, and the separation and withdrawal of dimethyl ether, water, and unreacted methanol may be realized using a single column, thus reducing the investment cost and the operating cost.

    摘要翻译: 公开了一种制备二甲醚的方法,包括:a)在脱水催化剂存在下使含有0-80mol%水的甲醇反应,b)将反应产物转移到单一分离塔中,从而分离二甲醚,水和 未反应的甲醇,c)取出二甲醚并从单一分离塔的侧流中取出未反应的甲醇,和d)将未反应的甲醇重新生成a)使甲醇反应。 二甲醚可以由含水甲醇制备,二甲醚,水和未反应甲醇的分离和取出可以使用单柱实现,从而降低了投资成本和运行成本。