膜分离正戊烷/氮气混合体系的研究  

Membrane separation of n-pentane from nitrogen

作　　者：李鸿儒[1] 刘丽英[1] 林东杰[1] 顾晓亮[1] 丁忠伟[1] 马润宇[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《北京化工大学学报（自然科学版）》2010年第4期12-16,共5页Journal of Beijing University of Chemical Technology(Natural Science Edition)

基　　金：国家"973"计划(2003CD61570)

摘　　要：利用自制的聚二甲基硅氧烷/聚醚酰亚胺(PDMS/PEI)非对称平板复合膜,以正戊烷/氮气混合体系作为研究对象,考察了原料气浓度、原料气流量、原料气压力、操作温度、渗透侧压力对分离过程的影响。实验结果表明:随着原料气浓度或流量增大,正戊烷的渗透率及分离系数均增大;而随着操作温度升高、原料气压力增大或渗透侧压力增大,正戊烷的渗透率及分离系数均减小。The removal of n-pentane from nitrogen has been investigated using a home-made polydimethylsiloxane （PDMS）/polyetherimide （PEI） asymmetric flat composite membrane. The effects of varying the operating conditions （feed n-pentane concentration,feed flow rate,operating temperature,feed pressure,and pressure in the permeate） on the separation process have been studied. It was shown that n-pentane permeance and separation factor increased with increasing feed n-pentane concentration or feed flow rate,and decreased with increasing operating temperature,feed pressure or pressure in the permeate.

关 键 词：复合膜 正戊烷 气体分离 聚二甲基硅氧烷 

分 类 号：TQ028.8[化学工程]