摘要
由于苯和环己烷的相对挥发度非常接近,利用传统分离方法(如萃取精馏或共沸精馏)分离苯-环己烷混合物的分离效率较低。相比之下,利用膜的溶解和扩散选择性对苯-环己烷混合物进行分离的渗透蒸发技术具有优势。综述了渗透蒸发膜分离苯-环己烷混合物的研究进展,重点介绍了用于渗透蒸发技术的膜材料(特别是高分子膜材料),对渗透蒸发技术分离苯-环己烷混合物的研究前景进行了展望。
Efficiency of conventional separation, namely azeotropic distillation or extracuve distillation, was relatively low due to very close relative volatility of benzene and cyclohexane. In contrast, pervaporation technology, which based on selectivity of sorption and diffusion of components on membrane, had advantage in benzene- cyclobexane mixture separation. Progress of pervaporation technology in separation of benzene and cyclohexane mixtures was summarized, and focused particularly on polymeric pervaporation membrane material. Prospect in separation of benzene -cyclohexane mixture by pervaporation was tentatively forecasted.
出处
《石油化工》
EI
CAS
CSCD
北大核心
2005年第9期885-890,共6页
Petrochemical Technology
关键词
渗透蒸发
苯
环己烷
膜
分离
pervaporation
benzene
cyclohexane
membrane
separation
