| Transport Process of Isopropanol Aqueous Solution by Pervaporation |
| |
| 作者姓名： | 魏峰 张卫江 韩莉果 张雪梅 |
| |
| 作者单位： | Chemical Engineering Research Center Tianjin University，Chemical Engineering Research Center Tianjin University，Chemical Engineering Research Center Tianjin University，Chemical Engineering Research Center Tianjin University，Tianjin 300072 China，Tianjin 300072 China，Tianjin 300072 China，Tianjin 300072 China |
| |
| 摘 要： | Pervaporation(PV) is an energy-efficient process forthe separation of liquid mixtures inthe chemical processingindustry, especially for separation of azeotropic or close-boilingliquid mixtures1]. Nowdehydration of organic sol-vents is the best-developed …
|
| 关 键 词： | 渗透作用 异丙醇 过蒸汽化 模型 |
| 修稿时间： | 2007-01-17 |
Transport Process of Isopropanol Aqueous Solution by Pervaporation |
| |
| WEI Feng,ZHANG Weijiang,HAN Liguo,ZHANG Xuemei.Transport Process of Isopropanol Aqueous Solution by Pervaporation[J].Transactions of Tianjin University,2007,13(4):263-269. |
| |
| Authors: | WEI Feng ZHANG Weijiang HAN Liguo ZHANG Xuemei |
| |
| Institution: | Chemical Engineering Research Center, Tianjin University, Tianjin 300072, China |
| |
| Abstract: | To study the transport process of isopropanol aqueous solution by pervaporation, the transport model of isopropanol and that of water at 323 K in polyvinyl alcohol(PVA) membrane were obtained in this paper. Theoretical predictions agreed well with the experimental results. The interactional parameter between water and PVA membrane is less than that between isopropanol and PVA membrane, which shows that water is preferentially dissolved in PVA membrane. The plasticizing coefficient and diffusion coefficient at infinite dilution of water are larger than those of isopropanol, which shows that the dissolution and permeation in PVA membrane of water are greater than those of isopropanol. Both the interactional parameter between water and isopropanol in the membrane and that in feed rise with the increase of isopropanol content in feed, which shows that the larger isopropanol content is, the higher selectivity of the membrane is and the more remarkable separation effect of pervaporation is. |
| |
| Keywords: | model permeate flux isopropanol water pervaporation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
