Fluid dynamics and mass transfer in a bubble column with suspended particles

Authors

  • Dr. Thomas Sauer,

    1. Technische Chemie und Chemische Verfahrenstechnik, Universität-Gesamthochschule Paderborn, Postfach 1621, D-4790 Paderborn
    Current affiliation:
    1. University of Waterloo, Department of Chemical Engineering
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  • Prof. Dr.-Ing. Dietmar-Christian Hempel

    1. Technische Chemie und Chemische Verfahrenstechnik, Universität-Gesamthochschule Paderborn, Postfach 1621, D-4790 Paderborn
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  • Paper presented at the Annual Meeting of German Chemical and Process Engineers (GVC, VDI) 1986, September 17 to 19 Strasbourg.

Abstract

Slurry bubble columns are widely used in biotechnology. Therefore, the effects of solid particles on fluidization characteristics, gas hold-up and volumetric liquid-side mass transfer coefficient were measured in a slurry bubble column (i.d. 0.14 m). The density and diameter of the suspended particles were similar to those applied in biotechnology with immobilized bacteria. Based on models of turbulence and of liquid circulation induced by rising gas bubbles, equations for critical gas velocity, gas hold-up and volumetric liquid-side mass transfer coefficient were obtained by dimensional analysis.

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