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http://dx.doi.org/10.7464/ksct.2016.22.4.241

Extractive Distillation Process for the Production of Highly Purified Ethanol from Aqueous Solution using Dimethyl Sulfoxide and Ethylene Glycol  

Noh, Sang-Gyun (Department of Chemical & Biomolecular Engineering)
Publication Information
Clean Technology / v.22, no.4, 2016 , pp. 241-249 More about this Journal
Abstract
In this study, comparative work has been performed between two-columns and three-columns configurations for an extractive distillation process to produce highly purified ethanol with not less than 99.7 wt% using dimethyl sulfoxide (DMSO) and ethylene glycol (EG) as extracting agents. Optimal ethanol concentration at a concentrator top stream which minimized the total reboiler heat duties was determined for a three-columns configuration for two different solvents. For the thermodynamic model, NRTL liquid activity coefficient model was used and PRO/II with PROVISION 9.4 at Schneider electric company was utilized. DMSO was proved to be a better solvent than EG and three-columns configuration is better than two- columns configuration in the total utility consumptions since some of the liquid water contained in the feed stream was removed at a concentrator bottom liquid stream.
Keywords
Extractive distillation; Liquid activity coefficient model; Solvent; Computer simulation; Process optimization;
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Times Cited By KSCI : 2  (Citation Analysis)
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