聚酰亚胺中空纤维膜组件从空气中分离浓缩氙的性能  

Separation and Enrichment of Xenon From Atmosphere Using Polyimide Hollow Fiber Membrane Module

作　　者：陈占营[1] 刘蜀疆[1] 常印忠[1] 王建龙[2] 黑东炜[3] CHEN Zhanying;LIU Shujiang;CHANG Yinzhong;WANG Jianlong;HEI Dongwei(Radionuclide Laboratory,CTBT Beijing National Data Centre,Beijing 100085,China;Institute of Nuclear and New Energy Technology,Tsinghua University,Beijing 100084,China;Northwest Institute of Nuclear Technology,Xi’an 710024,China)

机构地区：[1]禁核试北京国家数据中心北京放射性核素实验室,北京100085 [2]清华大学核能与新能源技术研究院,北京100084 [3]西北核技术研究所,西安710024

出　　处：《现代应用物理》2024年第5期155-163,共9页Modern Applied Physics

基　　金：国家自然科学基金资助项目(12205126)。

摘　　要：在膜材料实验筛选基础上,研究了聚酰亚胺中空纤维膜组件从空气中分离浓缩氙的性能,包括不同型号膜组件从空气中分离浓缩氙的性能、操作条件变化对氙分离浓缩性能的影响及不同膜组件组合从空气中分离浓缩氙的性能。结果表明:单支膜组件从空气中分离浓缩氙时,氙浓缩系数随气流比的增大迅速增大,达到最大值后趋于恒定,氙的最大回收率随膜组件有效长度的增加而增大;温度和压力对膜组件工作性能的影响不明显;不同膜组件组合的工作性能差别很大。研究结果对基于膜分离技术的大气放射性氙监测设备研制具有重要意义。Gas separation membrane has a significant effect on separating and enriching xenon from atmosphere.On the basis of membrane material screening,the performances of polyimide hollow fiber membrane modules in concentrating xenon from air are studied in this paper,including module types,operating conditions,and modules connection modes.The results show that when a single membrane module is applied,the xenon enrichment factor increases rapidly as the airflow ratio increases,reaches its maximum and maintains the constant.The maximum xenon recovery rate increases with the increasing of effective length of membrane modules.The temperature and pressure have no significant effect on the membrane separation performance.However,membrane module connection mode influences the working performance greatly.The research results are of great value for the development of atmospheric radioxenon monitoring equipment based on membrane separation technology.

关 键 词：放射性氙 气体分离膜 聚酰亚胺 监测 

分 类 号：TL92[核科学技术—核燃料循环与材料] O484[理学—固体物理]