SEPARATION OF COMPONENTS OF ORGANIC LIQUIDS

摘要

A pervaporation process for separating organic liquid mixtures of components having differing polarities, uses an ion exchange membrane which comprises a polymerised alkene including pendant groups of formula SO2N(R)-A-QX where R is H or alkyl, A is alkylene, Q is quaternary ammonium, and X is a negatively-charged counter-ion, the sulfur content of the membrane being in the range 3-10 wt.%. The process is performed in a membrane module (21) having a hollow fiber membrane (20), with its ends potted in a potting material (82).