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Energy Evaluation of Ethanol Dehydration with Glycol Mixture as Entrainer

Benyahia, Khadidja and Benyounes, Hassiba and Shen, Weifeng Energy Evaluation of Ethanol Dehydration with Glycol Mixture as Entrainer. (2014) Chemical Engineering and Technology, 37 (6). 987-994. ISSN 0930-7516

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Official URL: https://doi.org/10.1002/ceat.201300872


Extractive distillation of ethanol dehydration using glycols as entrainers is proposed. Specifically, ethanol dehydration of an azeotropic mixture in the presence of ethylene glycol + glycerol mixture is evaluated. Simulation is performed and the vapor‐liquid equilibrium of ethanol + water + ethylene glycol + glycerol is predicted with the NRTL model. Minimization of energy consumption in both extractive and regeneration columns is attempted. Optimal operating parameters of the process including glycol concentration in the solvent mixture, main feed, and entrainer feed trays, total number of theoretical trays, and heat supplied to the reboiler are determined in order to achieve a specified distillate purity of 99.9 mol % ethanol.

Item Type:Article
HAL Id:hal-01888772
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Université des Sciences et de la Technologie Mohamed Boudiaf d'Oran - USTO (ALGERIA)
Other partners > Clarkson University (USA)
Laboratory name:
Deposited On:05 Oct 2018 10:32

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