INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION

CIESC Journal ›› 2004, Vol. 55 ›› Issue (10): 1740-1742.

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INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION

ZHANG Zhigang;XU Shimin;LI Xingang;ZHANG Weijiang

Online:2004-10-25 Published:2004-10-25

萃取精馏溶剂选择性的温度效应

张志刚;徐世民;李鑫钢;张卫江

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;长春工业大学化工学院，吉林长春 130012

Abstract

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(C₆H₆+C₆H₁₂+DMSO, C₆H₆+C₆H₁₂+DMF,EtOH+EA+DMF+DMSO, C₆H₆+C₆H₁₂+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.

Key words: 萃取剂, 选择性, 修正UNIFAC模型, Clausius-Mosotti方程

关键词: 萃取剂, 选择性, 修正UNIFAC模型, Clausius-Mosotti方程

ZHANG Zhigang, XU Shimin, LI Xingang, ZHANG Weijiang. INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION[J]. CIESC Journal, 2004, 55(10): 1740-1742.

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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INFLUENCE OF TEMPERATURE ON SOLVENT SELECTIVITY FOR EXTRACTIVE DISTILLATION

萃取精馏溶剂选择性的温度效应

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