Study of the Effect of Operating Parameters on the Extractive Distillation of Isopropyl Alcohol-Water Mixture Using Dimethyl Sulphoxide as an Entrainer

In this paper, the simulation analysis of separation of isopropyl alcohol (IPA)-water via extractive distillation by using dimethyl sulphoxide as an entrainer is presented. The steady-state simulation for this process was done using Aspen Plus simulator. The aim of this work is to study the effect o...

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Published inIndian chemical engineer (Calcutta, India : 1997) Vol. 60; no. 2; pp. 141 - 161
Main Authors Ghuge, Pravin D., Mali, Nilesh A., Sirsam, Rajkumar S.
Format Journal Article
LanguageEnglish
Published New Delhi Taylor & Francis 03.04.2018
Taylor & Francis Ltd
Subjects
Alcohol
Azeotrope
Dimethyl sulfoxide
Distillation
Distilled water
Economic analysis
Energy conservation
Energy consumption
Entrainment
Extractive distillation
Isopropanol
Isopropyl alcohol/water
Parameter sensitivity
Parameters
Purity
Sensitivity analysis
Separation
Simulation
Sulfoxides
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Summary:In this paper, the simulation analysis of separation of isopropyl alcohol (IPA)-water via extractive distillation by using dimethyl sulphoxide as an entrainer is presented. The steady-state simulation for this process was done using Aspen Plus simulator. The aim of this work is to study the effect of various operating parameters such as number of stages, molar reflux ratio, binary feed stage number, entrainer feed stage number, temperature of entrainer feed and entrainer to feed molar ratio on the purity and energy consumption. The sensitivity of these parameters serves as a basis to choose the optimum operating conditions to maximize the IPA purity and minimize the energy requirement. In this analysis, among various operating parameters, those which directly affect the IPA purity and the parameters which affect the reboiler duty, for the given separation task, are identified. Simulation results with optimum operating conditions and their economic analysis are also presented.
ISSN:0019-4506
0975-007X
DOI:10.1080/00194506.2017.1322923