PROCESS FOR THE SEPARATION OF GLYCOLS
    5.
    发明公开
    PROCESS FOR THE SEPARATION OF GLYCOLS 审中-公开
    分离甘醇的方法

    公开(公告)号:EP3215479A1

    公开(公告)日:2017-09-13

    申请号:EP15788091.5

    申请日:2015-11-04

    IPC分类号: C07C29/86 C07C31/20

    摘要: The invention provides a process for the separation of MEG and 1,2-BDO from a first mixture comprising MEG and 1,2-BDO in a first solvent by the steps of: (i) combining said first mixture with a second solvent stream comprising a second solvent in a first extraction column; (ii) recovering (a) a second mixture of MEG and 1,2-BDO in the second solvent, wherein the molar ratio of MEG:1,2-BDO is lower in the second mixture than in the first mixture; and (b) a solution comprising MEG in the first solvent; (iii) combining said second mixture with a first washing stream, said first washing stream also comprising the first solvent in a second extraction column; (iv) recovering (c) a first extract stream comprising the second solvent and 1,2-BDO and (d) a third mixture comprising MEG and, optionally, 1,2-BDO in the first solvent.

    摘要翻译: 本发明提供了从包含MEG和1,2-BDO的第一混合物中分离第一溶剂中的MEG和1,2-BDO的方法,其步骤为:(i)将所述第一混合物与第二溶剂物流合并,所述第二溶剂物流包含 第一萃取塔中的第二溶剂; (ii)回收(a)在第二溶剂中的MEG和1,2-BDO的第二混合物,其中第二混合物中MEG:1,2-BDO的摩尔比低于第一混合物中MEG:1,2-BDO的摩尔比; 和(b)在第一溶剂中包含MEG的溶液; (iii)将所述第二混合物与第一洗涤物流混合,所述第一洗涤物流还包含第二萃取塔中的第一溶剂; (iv)在第一溶剂中回收(c)包含第二溶剂和1,2-BDO的第一提取物流和(d)包含MEG和任选的1,2-BDO的第三混合物。