中国工程科学
中國工程科學
중국공정과학
ENGINEERING SCIENCE
2014年
12期
52-58
,共7页
渗透汽化%分子筛膜%有机溶剂脱水%工业应用
滲透汽化%分子篩膜%有機溶劑脫水%工業應用
삼투기화%분자사막%유궤용제탈수%공업응용
pervaporation%zeolite membrane%organic dehydration%industrial application
开发了擦涂-浸渍涂晶法和亚微米晶种诱导制备NaA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NaA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。
開髮瞭抆塗-浸漬塗晶法和亞微米晶種誘導製備NaA分子篩膜技術,有效地提高瞭膜的成品率、縮短瞭閤成時間,穫得瞭適閤規模化生產的製膜工藝。通過分子模擬的方法,對有機溶劑和水在分子篩膜中的傳質機理進行瞭探討。對NaA分子篩膜在體繫中的水熱、痠堿和鹽穩定性進行瞭繫統地研究,提齣瞭相應的預處理工藝,併設計建造齣滲透汽化工業應用裝置,實現瞭長時間穩定運行。
개발료찰도-침지도정법화아미미정충유도제비NaA분자사막기술,유효지제고료막적성품솔、축단료합성시간,획득료괄합규모화생산적제막공예。통과분자모의적방법,대유궤용제화수재분자사막중적전질궤리진행료탐토。대NaA분자사막재체계중적수열、산감화염은정성진행료계통지연구,제출료상응적예처리공예,병설계건조출삼투기화공업응용장치,실현료장시간은정운행。
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.