渗透汽化（ｐｅｒｖａｐｏｒａｔｉｏｎ,简称ＰＶ）是一种新型膜分离技术。该技术用于液体混合物的分离 ,其突出的优点是能够以低的能耗实现蒸馏、萃取、吸收等传统方法难以完成的分离任务。它特别适用于蒸馏法难以分离或不能分离的近沸点、恒沸点混合物以及同分异构体的分离 ; Pervaporation (PV) is a new type of membrane separation technology. This technique is used for the separation of liquid mixtures. The outstanding advantage of this technique is the separation task which can be accomplished by traditional methods such as distillation, extraction and absorption with low energy consumption. It is especially suitable for the separation of nearly boiling points, constant boiling point mixtures and isomers of hard to separate or non-separable distillation;