戊二醛交联PVA/PAN复合膜渗透汽化性能的实验研究  

The pervaporation characteristics of a PVA/PAN composite membrane crosslinked by glutaradehyde

作　　者：万朝阳[1] 陈翠仙[2] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]清华大学化工系,北京100084

出　　处：《北京化工大学学报（自然科学版）》2000年第1期4-7,共4页Journal of Beijing University of Chemical Technology(Natural Science Edition)

摘　　要：研究了戊二醛交联时间对PVA/PAN复合膜分离性能的影响,并用于乙醇水溶液的分离。结果表明,交联处理存在着最优时间。对应于最优交联时间的膜,当料液中乙醇质量分数(wE)为962%,料液温度(t)为70℃时,渗透通量(Jt)为337(g·m-2·h-1),分离因数(αW/E)为3897。进一步考察了料液质量分数为30%～983%,料液温度为50～78℃时,交联膜的分离性能。The duration of crosslinking reaction of a PVA/PAN composite membrane by glutaradehyde was studied. Pervaporation tests of water ethanol mixture through the crosslinked membrane were performed. The results showed there is optional duration of crosslinking reaction, after which the permeation flux of the membrane was 337?(g·m -2 ·h -1 ) and the separation factor 389 7 when the feed concentration of ethanol was 96 2%?(massfraction) and feed temperature 70?℃. Pervaporation tests with feed concentration of ethanol from 30% to 98 3%?(massfraction) and feed temperature from 50?℃ to 78?℃ were also performed to study the influence of operation factors.

关 键 词：渗透汽化 戊二醛 交联 PVA PAN 复合膜 

分 类 号：TQ028.8[化学工程]