| 乙醇─水间歇萃取精馏中溶剂流率的选择及溶剂回收的研究 |
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| 引用本文： | 白鹏,陈立峰,姚俊峰.乙醇─水间歇萃取精馏中溶剂流率的选择及溶剂回收的研究[J].佳木斯大学学报,2005(2). |
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| 作者姓名： | 白鹏 陈立峰 姚俊峰 |
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| 作者单位： | 天津大学化工学院制药工程系，天津大学化工学院制药工程系，天津大学化工学院制药工程系 天津300072，天津300072，天津300072 |
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| 摘 要： | 研究了以乙二醇为溶剂间歇萃取精馏乙醇—水共沸混合物的溶剂流率选择及回收过程.实验得出,乙醇—水体系的相对挥发度随溶剂比的增加而显著增大,水—乙二醇过渡馏分段持续时间很短,在该段时间会出现塔顶温度急剧跃升的现象;当回流比为2:1时,溶剂回收的收率可达到99.33%.
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| 关 键 词： | 间歇萃取精馏 溶剂流率 溶剂回收 回流比 |
Study on Solvent Recovery of Batch Extractive Distillation for Separation of Ethanol-Water |
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| BAI Peng,CHEN Li-feng,YAO Jun-feng.Study on Solvent Recovery of Batch Extractive Distillation for Separation of Ethanol-Water[J].Journal of Jiamusi University(Natural Science Edition),2005(2). |
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| Authors: | BAI Peng CHEN Li-feng YAO Jun-feng |
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| Abstract: | In this paper, the process of solvent flow velocity choosing and the solvent recovery operation during batch extractive distillation for the separation of ethanol-water azeotropic mixture using glycol as the solvent was studied. The results showed that the relative volatility of ethanol-water azeotropic mixture increased obviously as solvent ratio increased and the slop cut of water-glycol lasted a very short time during which the temperature at the top of the column rose sharply. When the reflux ratio was up to 2:1, the yield percentage of solvent recovery reached the value of 99.33%. |
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| Keywords: | batch extractive distillation solvent flow velocity solvent recovery reflux ratio |
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