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Gas-liquid mass transfer : influence of sparger location

Sardeing, Rodolphe and Aubin, Joelle and Poux, Martine and Xuereb, Catherine Gas-liquid mass transfer : influence of sparger location. (2004) Chemical Engineering Research and Design, vol. 8 (n° 9). pp. 1161-1168.

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Official URL: http://dx.doi.org/10.1205/cerd.82.9.1161.44158

Abstract

The performance of three sparger diameters (DS = 0.6D, DS = D, DS = 1.6D) in combination with three positions (below, above or level with the impeller) for gas-liquid dispersion and mass transfer were evaluated in the case of the Rushton turbine and the A315 propeller in up- or down-pumping mode. The results show that the best results in terms of gas handling and mass transfer capacities are obtained for all impellers with the sparger placed below it and with a diameter at least equal to the impeller diameter. For the sparger position below the agitator, the kLa values of the Rushton turbine are greater than those of the A315 propeller, whatever the pumping mode. The A315 propeller in up-pumping mode is, however, more economically efficient in terms of mass transfer. In all cases, the up-pumping mode gives better results than the down-pumping one.

Item Type:Article
Additional Information:This publication is available on http://www.sciencedirect.com/science/journal/02638762
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
Laboratoire de Génie Chimique - LGC (Toulouse, France) - Réaction, mélange & séparation (RMS)
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Deposited By: Joelle Aubin-cano

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