Separation of Acetonitrile-Toluene Mixture by Batch Extractive Distillation

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Abstract Isopropylbenzene,4-tert-butyltoluene and 1,4-diethybenzene were selected as solvents for separation of acetonitrile-toluene mixture by batch extractive distillation according to a model derived from UNIFAC group contribution method.The vapor-liquid equilibria of acetonitrile-toluene system and acetonitrile-toluene with different solvents were measured by the vapor-liquid equilibria experiments,and the vapor-liquid equilibria of those systems were also calculated using UNIFAC group contribution method to calculate activity coefficients.Different solvents were investigated experimentally by batch extractive distillation,the results show that 1,4-diethybenzene is the optimal solvent for such process. The effects of reflux ratio and solvent ratio were also studied for batch extractive distillation.

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Received 2006-11-15; published 2006-11-15

Cite this article:

CUI Xian-bao~1,ZHOU Jin-bo~1,ZHANG Bin-shan~2,FENG Tian-yang~1,YANG Zhi-cai~1.Separation of Acetonitrile-Toluene Mixture by Batch Extractive Distillation[J] Chemcial Industry and Engineering, 2006,V23(6): 527-531

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