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Experiments of mass transfer with liquid–liquid slug flow in square microchannels

Di Miceli Raimondi, Nathalie and Prat, Laurent E. and Gourdon, Christophe and Tasseli, Josiane Experiments of mass transfer with liquid–liquid slug flow in square microchannels. (2014) Chemical Engineering Science, vol. 105. pp. 169-178. ISSN 0009-2509

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Official URL: http://dx.doi.org/10.1016/j.ces.2013.11.009

Abstract

Liquid-liquid mass transfer mechanism with slug flow in microreactor is investigated by means of experiments in square microchannels of 0.2 and 0.3 mm width. An experimental bench has been designed and an analytical protocol developed in order to follow the transfer of a solute from the dispersed phase to the continuous phase. The methodology used allows the identification of droplet side mass transfer coefficients. Total flow rate ranges from 5 to 50 mL.h-1, resulting in droplets velocities of 0.02 to 0.35 m.s-1. Volumetric mass transfer coefficient kda values obtained in the present work ranges from 0.89 to 9.45 s-1. The results reasonably fit with a model suggested by a previous study based on 2D direct numerical simulations. A comparison with other models available in literature shows that in the operating conditions considered in this work, the flow pattern inside the confined droplets at microscale leads to an enhancement of mass transfer compared to droplets that are not confined.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Chemical Engineering Science website : http://www.sciencedirect.com/science/journal/00092509
HAL Id:hal-01340709
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 > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
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Deposited By: Nathalie RAIMONDI
Deposited On:01 Jul 2016 14:06

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