| 萃取精馏溶剂选择性的温度效应 |
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| 引用本文： | 张志刚,徐世民,李鑫钢,张卫江.萃取精馏溶剂选择性的温度效应[J].化工学报,2004,55(10):1740-1742. |
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| 作者姓名： | 张志刚 徐世民 李鑫钢 张卫江 |
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| 作者单位： | 天津大学精馏技术国家工程研究中心,天津,300072;长春工业大学化工学院,吉林,长春,130012;天津大学精馏技术国家工程研究中心,天津,300072;天津大学化学工程研究所,天津,300072 |
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| 摘 要： | Extractive distillation is an important and useful technique for separating close boiling and azeotropic liquid mixtures. Solvent selectivity is the key to achieving success. In this paper, the relation of solvent selectivity uersus temperature for different mixed systems (C6H6 C6H12 DMSO,C6H6 C6H12 DMF, EtOH EA DMF DMSO, C6H6 C6 H12 DMF DMSO) was examined by the modified UNIFAC model, which is a well-tested method to select a solvent for extractive distillation.With increasing temperature, solvent selectivity was decreased. In addition, the influence of temperature on solvent selectivity was set forth for the first time by using the Clausius-Mosotti equation.
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| 关 键 词： | 萃取剂 选择性 修正UNIFAC模型 Clausius-Mosotti方程 |
| 文章编号： | 0438-1157(2004)10-1740-03 |
| 收稿时间： | 2004-3-23 |
| 修稿时间： | 2004-7-7
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INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION |
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| ZHANG Zhigang,XU Shimin,LI Xingang,ZHANG Weijiang.INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION[J].Journal of Chemical Industry and Engineering(China),2004,55(10):1740-1742. |
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| Authors: | ZHANG Zhigang XU Shimin LI Xingang ZHANG Weijiang |
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| Abstract: | Extractive distillation is an important and useful technique for separating close boiling and azeotropic liquid mixtures.Solvent selectivity is the key to achieving success.In this paper, the relation of solvent selectivity versus temperature for different mixed systems(C_6H_6 C_6H_ 12 DMSO, C_6H_6 C_6H_ 12 DMF,EtOH EA DMF DMSO, C_6H_6 C_6H_ 12 DMF DMSO) was examined by the modified UNIFAC model,which is a well-tested method to select a solvent for extractive distillation.With increasing temperature,solvent selectivity was decreased.In addition, the influence of temperature on solvent selectivity was set forth for the first time by using the Clausius-Mosotti equation. |
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| Keywords: | solvent selectivity modified UNIFAC model Clausius-Mosotti equation |
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