Binary mixed solvents for separating benzene-cyclohexane by extractive distillation

被引：0
|
作者：
Zhang, Zhi-Gang [1 ,2 ]
Xu, Shi-Min [1 ]
Zhang, Wei-Jiang [3 ]
Li, Xin-Gang [3 ]
机构：
[1] National Engineering Research Center for Distillation Technology, Tianjin University, Tianjin 300072, China
[2] School of Chemical Engineering, Changchun University of Technology, Changchun 130012, China
[3] Chemical Engineering Research Institute, Tianjin University, Tianjin 300072, China
来源：
Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology | 2006年 / 39卷 / 04期
关键词：
Binary mixtures - Distillation - Solvents;
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学科分类号：
摘要：
A number of binary mixed solvents for separation of benzene and cyclohexane by extractive distillation was examined in a vapor-liquid equilibrium (VLE) experiment apparatus. The integrated properties of the binary mixed solvents were investigated. It is found that the binary solvent is superior to the single solvent, and that N,N-dimethylformamide (DMF) and dimethyl sulfoxide (DMSO) are the best mixed solvent for separation of benzene and cyclohexane among all those tested solvents; it has an optimal compostion that the molar ratio of DMSO/DMF is near to 1.0, when the maximum relative volatility is 3.48. In addition, DMF show excellent selectivity and solubility for separating benzene and cyclohexane by extractive distillation as a single solvent.
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页码：424 / 427
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