渗透蒸发均质膜在二元醇/水溶液中的溶胀平衡模型  

SWELLING EQUILIBRIUM MODEL OF PERVAPORATION DENSE MEMBRANE IN BINARY ALCOHOL/WATER MIXTURES

作　　者：陈俸荣[1] 陈洪钫[2] 

机构地区：[1]清华大学化学工程系,天津大学化学工程系天津300072 [2]天津大学化学工程系,天津300072

出　　处：《化工学报》1996年第4期466-473,共8页CIESC Journal

摘　　要：对交联聚乙烯醇均质膜于全浓度范围的乙二醇／水溶液中分别在60、70和80℃下进行了溶胀平衡实验研究.基于改进的UNIQUAC方程和Flory-Huggins热力学理论，建立了液-膜两相溶胀平衡模型方程，并用该模型方程计算出了水和乙二醇分子在交联聚乙烯醇均质膜中的溶解平衡浓度，其计算结果与实验值吻合良好.The swelling equilibrium for the system water－ethylene glycol-crosslinked PVA at various temperatures were experimentally investigated.A liquid-membrane swelling equilibrium model was developed on the basis of modified UNIQUAC equation and Flory-Huggins thermodynamics and good agreement between the derived equation predictions and the experimental values for the preferential sorption of water-ethylene glycol mixture in the crosslinked PVA membrane was obtained.

关 键 词：渗透蒸发 溶胀平衡 乙二醇 液体混合物 分离 

分 类 号：TQ028.3[化学工程] TQ223.162