文献类型：期刊文献

中文题名：渗透蒸发膜分离有机双元混合物

英文题名：Separation of Binary Organic Mixture with Pervaporation Membrane

作者：黄倩[1];黄颂安[2]

机构：[1]南京大学化学化工学院;[2]华东理工大学化学工程研究所

年份：1997

卷号：14

期号：4

起止页码：21

中文期刊名：化学工业与工程

外文期刊名：Chemical Industry and Engineering

收录：CSTPCD

语种：中文

中文关键词：渗透蒸发;膜分离;蒸发;有机混合物;分离

外文关键词：pervaporation benzene—cyclohexane polyimide

摘要：本文以聚酰亚胺（ＰＩ）均质膜为渗透蒸发膜来分离苯和环己烷混合液，测定其渗透通量及透过液组成，证明ＰＩ膜对苯有极强的选择性；平衡溶解度大小影响着渗透通量的大小。在一定范围内，苯在ＰＩ膜内的扩散系数与其溶解度成指数关系，并将由此得到塑化因子ｒ，与苯和ＰＩ膜的相互作用参数的计算值进行了比较。同时，发现渗透通量、溶解度和扩散系数分别与温度之间符合Ａｒｒｅｈｅｎｉｕｓ方程。
Homogeneous membrane of polyimide (PI) was employed in pervaporation to separate benzene—cyclohexane mixture. Flux rates and compositions of permeant liquid were measured. High selectivity for benzene has been found. Pervaporation flux depends upon the value of equilibrium solubility. The dependence of penetrant concentration in the membrane upon the diffusion coefficients may be expressed by an expoential equation under a certain limitation. Thus, we obtain plasticization factors r , which are compared with the calculated results of intercoordinate factors of bezene—PI membrane. We have found that Arrhenius equations is valid in expressing the relationship between temperature and K, flux rates, solubilities and diffusivities respectively.