孔隙率对中空纤维膜气体吸收过程影响的研究  

Influence of porosity in the process of microporous membrane gas absorption

作　　者：郝欣[1] 石冰洁[1] 张卫东[1] 张泽廷[1] 

机构地区：[1]北京化工大学化学工程学院,北京100029

出　　处：《膜科学与技术》2005年第3期34-38,共5页Membrane Science and Technology

基　　金：国家自然科学基金资助项目(20206002);教育部科学技术重点项目(重点01025);教育部高等学校博士学科点专项科研资金(20020010004);北京市科技新星计划(H013610250112)

摘　　要：以两种不同孔隙率的疏水性聚丙烯中空纤维膜组件研究了从CO2/空气混合气中用NaOH吸收CO2时传质系数的差异,分析了表面孔隙率对膜吸收过程传质性能的影响,并进一步讨论了膜孔隙率对膜吸收器设计的影响.Membrane absorption processes are a novel technology for replacing conventional techniques for flue gas cleaning. When two kinds of hollow fiber membrane (HFM), which have different surface porosity, were used in the experiments under various operation conditions, it was found that the actual mass transfer area is not equal to the total area of the HFM wall. The influence of the surface porosity was analyzed in this study and the results correctly express the real mass transfer capacity of the HFM contactors.

关 键 词：吸收过程 孔隙率 中空纤维膜组件 气体 空气混合气 传质系数 NAOH 传质性能 CO2 聚丙烯 疏水性 吸收器 

分 类 号：TQ028[化学工程]