公开(公告)号：ZA201109019B

公开(公告)日：2013-02-27

申请号：ZA201109019

申请日：2011-12-08

Applicant: BASF SE ,  DOW CHEMICAL CO

Inventor： KAMPE PHILIP ,  RESCH PETER ,  CHIN SOO YIN ,  BABLER PETER ,  MULLER ULRICH ,  SCHINDLER GOTZ-PETER ,  GOBBEL HANS-GEORG ,  TELES JOAQUIM HENRIQUE ,  GUMLICH KAI ,  GRABLER THOMAS ,  BARTOSCH CHRISTIAN ,  JACUBINAS RICHARD ,  WEIDENBACH MEINOLF

IPC: C07D20060101

公开(公告)号：SG178027A1

公开(公告)日：2012-03-29

申请号：SG2012002499

申请日：2010-07-16

Applicant: BASF SE ,  DOW CHEMICAL CO

Inventor： TELES JOAQUIM HENRIQUE ,  GOEBBEL HANS-GEORG ,  BASLER PETER ,  KAMPE PHILIP ,  GUMLICH KAI ,  BARTOSCH CHRISTIAN ,  MUELLER ULRICH ,  JACUBINAS RICHARD ,  TRUKHAN NATALIA ,  WEIDENBACH MEINOLF ,  COGSWELL MARTIN

Abstract: A method for separating acetonitrile from water, comprising (i) providing a stream S1 containing at least 95 wt.-%, based on the total weight of S1, acetonitrile and water, wherein the weight ratio of acetonitrile : water is greater than 1; (ii) adding a stream P, comprising at least 95 wt.-% C3, based on the total weight of stream P, to S1 to obtain a mixed stream S2, C3 being propene optionally admixed with propane with a minimum weight ratio of propene : propane of 7:3; (iii) subjecting S2 to a temperature of 92 °C at most and a pressure of at least 10 bar, obtaining a first liquid phase L1 essentially consisting of C3, acetonitrile, and water, and a second liquid phase 12 essentially consisting of water and acetonitrile wherein the weight ratio of acetonitrile : water in L2 is less than 1; (iv) separating L1 from L2.