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Extractive distillation: recent advances in operation strategies

Shen, Weifeng and Benyounes, Hassiba and Gerbaud, Vincent Extractive distillation: recent advances in operation strategies. (2014) Reviews in Chemical Engineering, vol. 31 (n° 1). pp. 13-26. ISSN 0167-8299

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Official URL: https://www.degruyter.com/view/j/revce.2015.31.issue-1/revce-2014-0031/revce-2014-0031.xml

Abstract

Extractive distillation is one of the efficient techniques for separating azeotropic and low-relativevolatility mixtures in various chemical industries. This paper first provides an overview of thermodynamic insight covering residue curve map analysis, the application of univolatility and unidistribution curves, and thermodynamic feasibility study. The pinch-point analysis method combining bifurcation shortcut presents another branch of study, and several achievements have been realized by the identification of possible product cut under the following key parameters: reflux ratio, reboil ratio, and entrainer-feed flow rate ratio. Process operation policies and strategy concerning batch extractive distillation processes are summarized in four operation steps. Several configurations and technological alternatives can be used when extractive distillation processes take place in a continuous or batch column, depending on the strategy selected for the recycle streams and for the main azeotropic feeds.

Item Type:Article
Additional Information:Thanks to De Gruyter editor. The definitive version is available at http://www.degruyter.com/ The original PDF of the article can be found at Reviews in Chemical Engineering website : http://www.degruyter.com/view/j/revce
HAL Id:hal-01338390
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 - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Université des Sciences et de la Technologie Mohamed Boudiaf d'Oran - USTO (ALGERIA)
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Deposited By: Vincent GERBAUD
Deposited On:28 Jun 2016 13:15

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