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Effect of Dual Impeller-Sparger Geometry on the Hydrodynamics and Mass Transfer in Stirred Vessels

Garcia Cortes, Daniel Ajax and Xuereb, Catherine and Taillandier, Patricia and Jauregui Haza, Ulises Javier and Bertrand, Joël Effect of Dual Impeller-Sparger Geometry on the Hydrodynamics and Mass Transfer in Stirred Vessels. (2004) Chemical Engineering and Technology, 27 (9). 988-999. ISSN 0930-7516

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Official URL: https://doi.org/10.1002/ceat.200401965

Abstract

The understanding of the effect of impeller‐sparger configurations on gas dispersion and mass transfer is very important to improve the performance of gas/liquid contactor systems. The influence of the impeller positions, the upper turbine diameter, the sparger ring diameter and its location in regard to the lower impeller on the power consumption, the volumetric mass‐transfer coefficient and the overall oxygen transfer efficiency were studied in a nonstandard curved bottomed reactor with an agitated system with dual disk style turbines. In the range of the gas flow rates studied, the most efficient impeller‐sparger arrangement for the oxygen transfer is the impeller system with turbines of different diameters located at C = 0.25 and IC = 0.5, and with the sparger of smaller diameter than the lower impeller settled below the impeller. A new model to estimate the kLa with an average relative error of 8 %, which takes the reactor operation conditions and the influence of the impeller‐sparger geometry into account, was also proposed.

Item Type:Article
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 > Universidad de La Habana - UH (CUBA)
Laboratory name:
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Deposited By: Michel Aressy
Deposited On:22 Feb 2019 15:53

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