【作者】 陈华艳； 赵晶； 吕晓龙；

【Author】 CHEN Huayan,ZHAO Jing,Lü Xiaolong (Institute of Biochemical Engineering,Tianjin Polytechnic University,Tianjin 300160,China)

【机构】 天津工业大学生物化工研究所；

【摘要】 对气扫式膜蒸馏法的热量和质量传递机理进行了研究,建立了该过程的热量和质量传递模型,并对模型进行了计算,考察了进料温度、进料流量、进料浓度对膜通量的影响,并与部分实验结果进行了比较,结果表明模型计算值稍高于实验值,但两者趋势一致.随进料温度的升高,膜通量增加.进料流量对膜通量影响不大.进料浓度越高,膜通量越低.更多还原

【Abstract】 In this work mass transfer and heat transport through hydrophobic microporous membrane in sweeping gas membrane distillation was studied.A model about heat and mass transfer was constructed and solved. The effects of feed temperature,feed flux and concentration on membrane flux were tested.The calculated membrane flux was compared with partial measured membrane flux.The experimental results show that the cal culated was higher than the measured one,but variation tendency of them was in accordance with each other. With increasing feed temperature membrane flux increased.Feed flux had litter effect on membrane flux.Increasing feed concentration led to higher membrane flux.更多还原