新型空气隙膜蒸馏组件用于海水淡化  

A new air-gap membrane distillation module for seawater desalination

作　　者：薛喜东 李露 卜建伟 邵天宝 潘春佑 张乾 

机构地区：[1]国家海洋局天津海水淡化与综合利用研究所,天津300192

出　　处：《现代化工》2018年第1期93-97,共5页Modern Chemical Industry

基　　金：中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2017-T01);中央级公益性科研院所基本科研业务费专项资金项目(K-JBYWF-2015-T03);海洋公益性行业科研专项经费项目(201405035)

摘　　要：设计了一种基于中空纤维膜的螺旋缠绕式空气隙膜蒸馏组件,以模拟海水为原料液,考察了热料液进口温度T3、料液流量F、缠绕角度、空气隙厚度、内芯长度对膜通量和造水比的影响。实验结果表明,膜通量和造水比均随着热料液进口温度的增加而明显增大;当料液流量增加时,膜通量增大,造水比呈相反趋势;随着空气隙厚度的增加,膜通量和造水比均逐渐减小;膜通量和造水比均随着缠绕角度的增加而减小;内芯长度增加使得造水比提高,而膜通量则降低。实验过程中膜通量和造水比的最高值分别达到6.1 kg/(m^2·h)和5.8,产水电导率始终保持在20.0μS/cm以下。A spirally wound air-gap membrane distillation module based on hollow fiber is designed for seawater desalination.Taking simulated seawater as feed liquid,the effect of the inlet temperature of hot feed,hot feed flow rate,winding angle,air gap thickness and the length of inner core on membrane permeate flux（ JW） and gained output ratio（ GOR） are studied.The results show that both JWand GOR increase with the increasing inlet temperature of hot feed.When the hot feed flow rate increases,JWwill increase while GOR will decrease. Both JWand GOR decrease with increasing air gap thickness and winding angle.A larger length of inner core will make JWincrease and draw GOR to drop.The maximum of JWis 6. 1 kg·m^-2·h^-1 and that of GOR is 5. 8 during the experiments. The permeate conductivity has remained below 20. 0 μS·cm^-1.

关 键 词：空气隙膜蒸馏 中空纤维 螺旋缠绕 海水淡化 

分 类 号：X787[环境科学与工程—环境工程]