膜法脱除1,1-二氟乙烷气体中的水蒸气  

Removal of water vapor from 1,1-difluoroethane by membrane

作　　者：杨建[1] 贺高红[1] 王跃[1] 窦红[1] 李保军[1] 刘元法[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室膜科学与技术研发中心,辽宁大连116012

出　　处：《现代化工》2008年第8期76-78,80,共4页Modern Chemical Industry

基　　金：新世纪优秀人才支持计划资助(NCET-06-0272)

摘　　要：采用聚砜中空纤维膜组件脱除某制冷剂厂1，1-二氟乙烷（HFC-152a）中的水蒸气，实验考察了HFC-152a和水蒸气在膜中的传质分离效果，研究了管程压力和管程气体流速对脱水效果的影响。聚砜中空纤维膜组件在较低操作压力下，可使HFC-152a气体中的含水质量分数由（700～900）×10^-6降低至（200～300）×10^-6。对工厂现有脱水流程进行了优化设计，降低了能耗，从而可以取得良好的经济效益。The polysulfone hollow fiber membrane modules are used to remove water vapor from 1,1-difluoroethane（HFC- 152a） gas through the experimental process in a refrigerant plant. The dehumidification results of this kind of membrane module are measured in the experiments. The effects of the pressure and velocity of feed on the dehydration properties of the membranes are also investigated. The mass fraction of water in HFC-152a feed gas can be decreased from （700-900）×10^-6 to （200 - 300 ）×10^-6 by the hollow fiber membranes under very low pressure. The dehumidification process of the existing plant has been optimumly designed, and the excellent economic benefits could be achieved with very low energy consumption.

关 键 词：1 1-二氟乙烷 水蒸气 脱水 中空纤维膜组件 

分 类 号：TQ028.8[化学工程]