渗透汽化脱水分子筛膜的制备与应用研究  

Study of zeolite membranes for pervaporation dehydration and their applications

作　　者：顾学红[1] 徐南平[1] 

机构地区：[1]南京工业大学化学化工学院,材料化学工程国家重点实验室,南京210009

出　　处：《中国工程科学》2014年第12期52-58,共7页Strategic Study of CAE

摘　　要：开发了擦涂-浸渍涂晶法和亚微米晶种诱导制备Na A分子筛膜技术,有效地提高了膜的成品率、缩短了合成时间,获得了适合规模化生产的制膜工艺。通过分子模拟的方法,对有机溶剂和水在分子筛膜中的传质机理进行了探讨。对Na A分子筛膜在体系中的水热、酸碱和盐稳定性进行了系统地研究,提出了相应的预处理工艺,并设计建造出渗透汽化工业应用装置,实现了长时间稳定运行。A seeding method by rubbing-dipcoating and induction with ball-milled seeds was developed to synthesize NaA zeolite membrane. The synthesis approach could improve the rate of qualified membranes and reduce the synthesis time efficiently,which is suitable for large-scale production of zeolite membranes. Mass transfer mechanism of organic solvent and water in a zeolite membrane was investigated with molecular simulation method. The stability of NaA zeolite membranes in hydrothermal,acid-base and salty environments was systematically stud-ied. A pretreatment method was then proposed and industrial pervaporation plants were built up, which have been operated steadily for long term.

关 键 词：渗透汽化 分子筛膜 有机溶剂脱水 工业应用 

分 类 号：TQ174.6[化学工程—陶瓷工业]