摘要
对二元水溶液在渗透蒸发膜中的传质过程进行了研究,基于Flory Huggins高分子热力学理论和Fujita自由体积理论建立了改进的溶解 扩散模型。在该模型中考虑了组分间相互作用,组分体积分数、温度、膜材料和渗透物特性对传质过程的影响,考察了组分体积分数对相互作用参数的影响,膜材料对水的溶解选择性的影响,原料液组分体积分数、操作温度以及膜厚对渗透通量和分离因子的影响。
The mass transfer of binary aqueous solutions through pervaporation membrane was studied. A modified solution-diffusion model was established based on Flory-Huggins solution theory and Fujita′s Free Volume theory. The effects of component interaction, component concentration, temperature, property of membrane material and permeate on the mass transfer were discussed. The effects of component concentration on the interaction parameter between components, the membrane material on the solution selectivity towards water, as well as concentration, temperature, and membrane thickness on the permeation flux and separation factor were investigated.
出处
《化学工程》
EI
CAS
CSCD
北大核心
2005年第1期60-64,共5页
Chemical Engineering(China)
基金
教育部科学技术研究重点项目
高等学校骨干教师资助计划
中石化基金 (X500003)
天津市自然科学基金重点项目(993802011)
关键词
渗透蒸发
改进的溶解扩散模型
甲醇水溶液
聚酰亚胺
pervaporation
modified solution-diffusion model
methanol aqueous solution
polyimide
