The paper presents the results of the study of phase equilibrium in the system containing acetone, isopropanol, water, methyl isobutyl ketone, methyl isobutyl carbinol, and diisobutyl ketone. Mathematical modeling in AspenPlus V.10.0 was chosen as a method of studying. Thermodymanic-topological analysis was used to analyze the structure of the VLE diagram. The technique of studying the full composition diagram based only on a two-dimensional scan (determining the presence of a three-dimensional separatric manifold and distillation regions) was presented and demonstrated on the example of five components constituent of the mixture. It is shown that, in some cases, it is sufficient to study the two-dimensional scan of the phase diagram to predict its internal structure. Two separation flowsheets based on the use of direct and sharp distillation were considered, and the operating column parameters corresponding to minimum energy consumption were determined. The sharp distillation was proved to be less energy-intensive.

中文翻译：

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从丙酮+异丙醇+水+甲基异丁基酮+甲基异丁基甲醇+二异丁基酮混合物中分离和纯化甲基异丁基酮

本文介绍了含丙酮，异丙醇，水，甲基异丁基酮，甲基异丁基甲醇和二异丁基酮的体系中相平衡的研究结果。选择了AspenPlus V.10.0中的数学建模作为研究方法。热力学拓扑分析用于分析VLE图的结构。提出了仅基于二维扫描（确定三维分离歧管和蒸馏区的存在）研究全组成图的技术，并以混合物的五种成分为例进行了演示。结果表明，在某些情况下，研究相图的二维扫描以预测其内部结构就足够了。考虑了基于直接蒸馏和剧烈蒸馏的两种分离流程图，并确定了与最低能耗相对应的操作塔参数。事实证明，剧烈蒸馏的能源消耗较少。