公开(公告)号：US20170313640A1

公开(公告)日：2017-11-02

申请号：US15524276

申请日：2015-11-04

申请人： SHELL OIL COMPANY

发明人： Pieter HUIZENGA ,  Kai Jürgen FISCHER ,  Waldo Eugene DE VILLIERS ,  Karin BUS ,  Dorien VELDHUIZEN

IPC分类号： C07C29/86 ,  B01D11/04 ,  B01D11/00

CPC分类号： C07C29/86 ,  B01D11/0426 ,  B01D11/0492 ,  B01D2011/002 ,  C07C31/202 ,  C07C31/207

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.