恒沸精馏分离乙腈—甲醇—水体系的研究  

Study on Separation of Acetonitrile-methanol-water System by Azeotropic Distillation

作　　者：王崇晓[1] 朱龙平[1] 

机构地区：[1]中山大学药学院,广东广州510006

出　　处：《广东化工》2015年第13期3-4,共2页Guangdong Chemical Industry

摘　　要：为了从制药废液中回收乙腈和甲醇,研究了恒沸精馏在分离乙腈—甲醇—水三组分混合物中的应用。分析了夹带剂类型,夹带剂与混合物物料比(W/W),理论塔板数对甲醇纯度和收率的影响。结果表明:以二氯甲烷为夹带剂,夹带剂与母液物料比为0.5(W/W),30级理论塔板数为较优工艺条件,甲醇纯度为98.5%,收率95%。In order to recover acetonitrile and methanol from waste pharmaceutical liquid, study the azeotropic distillation method for separating acetonitrile-methanol-water system. The effects of different entrainers, ratio （W/W） of entrainer to mixture, different theoretical plate number on the purity and yield of methanol were analyzed. The optimal process variables were obtained as follows： dichlorornethane used to be entrainer, 0.5 ： 1 （W/W）of entrainer-mixture ratio, 30 theoretical plate number. Under these conditions, the purity of methanol was 98.5 % and the yield of methanol was 95 %.

关 键 词：乙腈 甲醇 恒沸精馏 二氯甲烷 

分 类 号：TQ[化学工程]