Separation and Purification of Methyl Isobutyl Ketone from Acetone + Isopropanol + Water + Methyl Isobutyl Ketone + Methyl Isobutyl Carbinol + Diisobutyl Ketone Mixture

Abstract

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.

Enhancing the Performance of Evolutionary Algorithm by Differential Evolution for Optimizing Distillation Sequence

“…This present study introduced a separation scheme proposed by Mayevskiy et al [29] instead of redesigning a distillation sequence to separate the 6-composition mixture. The same as the reference publication, a feed flow of 100 kmol/h with molar compositions of 0.4934, 0.1717, 0.0847, 0.1927, 0.0015, and 0.0575 for acetone, isopropanol, water, methyl isobutyl ketone (MIBK), methyl isobutyl carbinol(MIBC), and diisobutyl ketone(DIBK), respectively was used.…”

“…The distillation sequence to be optimized is shown in Figure 10. More details can be found in Mayevskiy et al [29].…”

“…To be consistent with the simulation approach in the publication, Non-Random Two-Liquid (NRTL) was chosen as the thermodynamic model. The validity of the NRTL model has been discussed in the literature [29]. However, the single activity coefficient model is not able to calculate the thermodynamic state of the gas.…”

“…The performance of the evolutionary algorithms was firstly tested with a 14-component distillation sequence to discern the best one. The effectiveness of NSGA-II-DE was then examined by optimizing the distillation sequence of a triple-column distillation sequence proposed by Mayevskiy et al [29]. Finally, some opinions on applying this method to general process synthesis and design issues are provided.…”

The Design and Optimization of Extractive Distillation for Separating the Acetone/n-Heptane Binary Azeotrope Mixture

“…Among the various separation methods of azeotropes, − azeotropic distillation (AD), − extractive distillation (ED), − and pressure-swing distillation (PSD) − are the most common methods. Wang et al investigated the influence of solvent flow rates on controlling extractive distillation for separation of a minimum-boiling azeotrope mixture (HEP/isobutanol).…”