气体膜分离过程中浓差极化的影响  

Effects of Concentration Polarization in Membrane Gas Separation Processes

作　　者：冯献社[1] 蒋国梁[1] 朱葆琳[1] 

机构地区：[1]中国科学院大连化学物理研究所

出　　处：《膜科学与技术》1989年第2期23-28,共6页Membrane Science and Technology

摘　　要：在气体膜分离过程中,浓差极化的存在使分离效果变差。虽然在许多现有的气体膜分离过程中浓差极化并不严重,但随着高通量分离膜的不断问世,浓差极化作用将不可忽视。本文推导了考虑浓差极化时稳态渗透速率表达式,并通过计算考察了操作参数和膜性能参数变化时,浓差极化作用大小的变化规律,为高通量膜分离器的设计与应用提供参考。Concentration polarization can impair the performance of membrane gasseparation processes.Although concentration polarization is negligible inmany existing processes,it will become significant with the develop-ment of high-flux membranes,In this paper,an equation of steadystate permeation flux has been derived in consideration of concentra-tion polarization.The influences of operation parameters and mem-brane characteristics on the concentration polarization effects in mem-brane gas separation processes have been studied through computation,which provids a reference for the design and operation of high-fluxmembrane gas separators.

关 键 词：膜分离 气体 浓差极化 

分 类 号：TQ028.8[化学工程]