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Submitted Chris Haslego, Nov 21 2011 11:21 AM | Last updated Nov 21 2011 01:29 PM




Category: Separation Technology
Question: Can a mixture of acetone and chloroform be modeled correctly using a process simulator?
Keywords: nonidealmixture,azeotrope,acetone,chloroform,aspensoftware
Answer: Mixtures are either ideal or non ideal. Ideal mixtures follow the Raoult's rule while the non ideal ones show an azeotropic behavior. The ratio of the compounds, in an azeotropic mixture, is exactly the same in both the vapor form of the mixture as in the liquid phase. A method to predict mixtures' behavior is to plot their boiling point diagram. Aspen software provides us a reasonable tool to graph the mixtures' boiling point diagram. This article illustrates how to use Aspen software in order to predict acetone and chloroform's behavior. As the resulting graphs show, the binary mixture of acetone- chloroform is a minimum pressure azeotrope. The Aspen modeling results are in good agreement with the experimental data.
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