NaA膜渗透汽化技术在三聚甲醛脱水中的应用  

Study on the Application of NaA Membrane for Pervaporation Dehydration from Trioxane Solution

作　　者：董金凤 梁武洋 伏劲松 陈洪林[1] 雷骞[1] 张小明[1] DONG Jin-feng;LIANG Wu-yang;FU Jing-song;CHEN Hong-lin;LEI Qian;ZHANG Xiao-ming(Chengdu Institute of Organic Chemistry,Chinese Academy of Sciences,Chengdu 610041,China;University of Chinese Academy of Sciences,Beijing 100049,China;College of Chemistry and Materials Science,Sichuan Normal University,Chengdu 610068,China)

机构地区：[1]中国科学院成都有机化学研究所,四川成都610041 [2]中国科学院大学,北京100049 [3]四川师范大学化学和材料科学学院,四川成都610068

出　　处：《合成化学》2021年第3期231-235,共5页Chinese Journal of Synthetic Chemistry

基　　金：国家重点研发计划项目(2018YFB0604900)。

摘　　要：采用NaA膜对三聚甲醛溶液渗透汽化脱水,对比了不同温度下渗透通量和分离性能的变化,研究了甲醛对混合物脱水分离的影响。结果表明NaA膜可将三聚甲醛和水的二元体系含水量从32 wt%降至0.15 wt%,将三聚甲醛、甲醛和水三元体系的含水量从28 wt%降至1.5 wt%,表现出了良好的分离性能;同时使用NaA膜渗透汽化技术无需添加萃取剂,并解决了三聚甲醛溶液共沸分离的难题。NaA membrane was used to dehydrate the trioxane solution by pervaporation,the changes of pervaporation flux and separation performance at different temperatures were compared,and the influence of formaldehyde on the separation performance of trioxane solution was studied.The results showed that NaA membrane could reduce the water content of the binary system of trioxane and water from 32 wt%to 0.15 wt%,and the water content of the ternary system of trioxane,formaldehyde and water from 28 wt%to 1.5 wt%,showing a good separation performance.At the same time,azeotropic separation of trioxane solution was solved by using NaA membrane pervaporation without adding extractant.

关 键 词：NaA膜 渗透汽化 脱水 三聚甲醛 制备 

分 类 号：O643.36[理学—物理化学]