中空纤维NaA分子筛膜对乙醇蒸汽渗透深度脱水  

Hollow fiber NaA zeolite membrane for deep dehydration of ethanol solvent by vapor permeation

作　　者：黄益平 唐丽芹 季雨凡 陈成 李双涛 黄晶晶 高雪超 顾学红 HUANG Yiping;TANG Liqin;JI Yufan;CHEN Cheng;LI Shuangtao;HUANG Jingjing;GAO Xuechao;GU Xuehong(China Construction Industrial&Energy Engineering Group Co.,Ltd.,Nanjing 210023,China;State Key Laboratory of Materials-Oriented Chemical Engineering,College of Chemical Engineering,Nanjing Tech University,Nanjing 211816,China)

机构地区：[1]中建安装集团有限公司,南京210023 [2]南京工业大学化工学院,材料化学工程国家重点实验室,南京211816

出　　处：《无机化学学报》2025年第2期225-234,共10页Chinese Journal of Inorganic Chemistry

基　　金：国家自然科学基金(No.21878166);江苏省碳达峰碳中和科技创新专项资金(No.BE2022033-1,BE2022033-4)资助。

摘　　要：系统研究了中空纤维Na A分子膜在蒸汽渗透中结合真空抽吸和N2吹扫操作对乙醇深度脱水的过程。研究发现吹扫作用在乙醇深度脱水中占主导作用,与未加吹扫气的对照工况(操作温度100℃、原料液进料流量为30 m L·min^(-1))相比,N_(2)吹扫(吹扫气流量为60 m L·min^(-1))可加倍提升脱水速率,快速得到超低含水量乙醇(水的质量分数约0.5%),效率提升约43%;升高温度至120℃时,增大原料液进料流量为50 m L·min^(-1)时乙醇产品中水的质量分数可进一步降至0.068‰,收率达99.86%。This work investigated the deep dehydration process of ethanol solvent by vapor permeation technique of hollow fiber supported NaA zeolite membrane using the combined operations of N2 sweeping and vacuum suction.The results indicated sweeping gas plays a dominant role in the deep dehydration of ethanol.Compared with the case without any sweeping(under an operation temperature of 100℃and a feeding liquid flow rate of 30 mL·min^(-1)),the N_(2)sweeping with a flow rate of 60 mL·min^(-1)could promote the membrane dehydration efficiency by several folds,where the production efficiency was enhanced by 43%to obtain the ethanol with ultra-low water content of 0.04%.For a higher operation temperature of 120℃,the water content in ethanol could be further reduced to 0.068‰when the feeding liquid flow rate increased to 50 mL·min^(-1),where the harvest percentage was high up to 99.86%.

关 键 词：中空纤维NaA分子筛膜 蒸汽渗透 乙醇深度脱水 N2吹扫 

分 类 号：TQ028[化学工程] O622.3[理学—有机化学]