BP-4生产废液处理的工艺研究  

Study on Treatment Process of Waste Liquor in BP-4 Production

作　　者：张义军[1] 杨政[1] 代小丽[1] 黄珍珍[1] 李德江[1] 

机构地区：[1]三峡大学化学与生命科学学院,湖北宜昌443002

出　　处：《山东化工》2011年第5期4-6,共3页Shandong Chemical Industry

基　　金：宜昌市科学技术研究与开发项目(项目编号:A09302-14)

摘　　要：通过研究,确定利用萃取精馏法分离BP-4生产废液的最佳工艺条件:以甲苯为萃取剂,四氟鲍尔环为填料,回流比控制在5∶1,萃取剂滴加速率为5∶1,萃取剂配比为2∶1。以此工艺路线分离所得的碳酸二甲酯纯度为98.8%,异丙醇纯度为98.5%。The optimal process of refining waste liquor of BP -4 by extractive distillation was detemined. Extractive distillation of dimethyl carbonate from its azeotrope with methanol using toluene as extracting agent was studied. It was found that filler, dropping speed, reflux ratio and extracting agent ratio influenced remarkably the separation effect of extractive distillation and the optimum process conditions for separating the DMC - CH3OH azeotrope were determined as follows： toluene as extracting agent, single circle as filler, reflux ratio 5：1, dropping speed 5：1 and extracting agent ratio 2： 1. Under these conditions, the purity of dimethyl carbonate was up to 98.8% .the ouritv of isoorooanol was un to 98.5%.

关 键 词：萃取精馏 碳酸二甲酯 异丙醇 

分 类 号：TQ028.3[化学工程]