摘要：Vapour liquid equilibrium data are the basic need in the design of distillation columns. In the presentstudy, VLE prediction of four binary azeotropic systems namely ethanol-water, acetone-water, ethanol-benzeneand methanol-water was carried out using UNIQUAC and UNIFAC Models. UNIQUAC parameters of thechosen systems were computed using Newton Raphsons technique. Computations of UNIFAC Model weredone using ASOG method. VLE predicted from these models was validated using experimentations carried outin othmer VLE still and thermodynamic consistency test using Redlich Keister method. It was observed thatboth models are able to fit the experimental VLE data for all the systems. The results show that all the foursystems are minimum boiling azeotropes having positive deviation from ideality.
关键词：Activity coefficient;azeotrope;non ideal system;thermodynamic consistency;UNIFAC Model;UNIQUAC Model
