Vapor-Liquid Equilibria for the Ternary System Acetone + Methanol + Water at 101.325 kPa

摘要

The vapor-liquid equilibrium at 101.325 kPa has been measured for the ternary system acetone + methanol + water in an equilibrium still with circulation of phases. Satisfactory results were obtained for the prediction of activity coefficients and the equilibrium compositions iwht group contribution models (ASOG, UNIFAC, UNIFAC-Dortmund, and UNIFAC-Lyngby). Small standard deviations of vapor molar fraction and temperature were calculated. azeotropic behavior was observed only in the acetone + methanol mixture. The correlation parameters for the Tamir-Wisniak and UNIQUAC equations were presented.