2014•Applied Mechanics and MaterialsRequires access

Separation of Benzene and Cyclohexane with Mixed Solvent Using Extractive Distillation

Bradley Richard, Mohamad Azmi Bustam, Girma Hunde Gonfa

Abstract

Isothermal Vapour-liquid equilibrium for cyclohexane (1) + benzene (2) binary system, cyclohexane (1) + benzene (2) dimethylformamide (3) ternary system and cyclohexane (1) + benzene (2) dimethylformamide (3) + cosolvent (4) quaternary systems were obtained. The effects of cosolvents (diethyl glycol, dimethylsulfoxide, N-methylformamide) on the performance of dimethylformamide in benzene-cyclohexane separation were studied. The result shows the selected cosolvents suppress the effectiveness of dimethylformamide. The result also shows that the ratio of cosolvents to dimethylformamide affects the separation factor.

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Key concepts: Cyclohexane, Benzene, Dimethylformamide, Extractive distillation, Chemistry, Ternary operation, Solvent, Isothermal process