叠合膜用于多组分体系渗透汽化脱水过程的研究  

Study on pervaporation dehydration of multi-component system using combined membranes

作　　者：席春光[1] 余立新[1] 郭庆丰[1] 彭勇[1] 

机构地区：[1]清华大学化学工程系,北京100084

出　　处：《膜科学与技术》2003年第3期16-19,共4页Membrane Science and Technology

摘　　要：针对用渗透汽化 -反应精馏耦合过程来实现溴丙烷的连续化生产时氢溴酸对PVA膜的腐蚀作用 ,用阻氢溴酸的PTFE基离子交换膜与PVA/PAN复合膜的叠合膜进行HBr -PrOH -H2 O三组分体系的脱水 .分别测试了PVA/PAN复合膜、PTFE基离子膜以及PTFE -PVA叠合膜对丙醇 -水 -氢溴酸的分离性能 .渗透汽化结果表明 ,这种双膜叠合方法不但保持了PVA膜的高分离性能 。To overcome the corrosion of PVA membrane by hydrobromic acid in the coupled pervaporation(PV)-reaction distillation(RD) process for the continuous production of bromopropane, the combination of PTFE-based ion exchange membrane and PVA/PAN composite membrane was used in the dehydration of the ternery mixture of HBr-PrOH-H 2O. The separation properties of PVA/PAN, ion exchange membrane and the combination of the two were measured respectively. It was found that combined membranes not only keep the excellent dehydration performance of PVA/PAN composite membrane, but also effectively overcome the intolerance of PVA/PAN to HBr.

关 键 词：叠合膜 多组分体系 渗透汽化 脱水过程 离子交换膜 PVA/PAN复合膜 

分 类 号：TQ028.8[化学工程]