Characterization of hydrodynamic parameters in rotating disc and oldshue-rushton columns. Hydrodynamic modelling, drop size, hold-up and flooding

Authors

  • S. Sharker,

    1. Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 1A4
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  • C. R. Phillips,

    Corresponding author
    1. Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 1A4
    • Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, Ontario M5S 1A4
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  • C. J. Mumford

    1. Department of Chemical Engineering, University of Aston, Gosta Green, Birmingham B4 7ET, England
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Abstract

Flooding rates, dispersed phase hold-up, hold-up profile and drop-size distribution were investigated in rotating disc and Oldshue Rushton 0.10 m diameter, 18 compartment columns with toluene-water as the liquid-liquid system. The axial dispersed phase hold-up and the mean drop size in both contactors varied significantly with column height. The hold-up profiles were correlated by semi-theoretical models.

Abstract

On a étudié les vitesses d'engorgement, la rétention de la phase dispersée, le profil de rétention et la distribution des dimensions des gouttes dans des colonnes à disques rotatifs et des colonnes de Oldshue et Rushton à 18 compartiments et de 0.10 m de diamètre, le système liquide-liquide élange toluène-eau. La Rétention axiale de la phase dispersée et la dimension moyenne des gouttes dans les deux contacteurs ont varié d'une manière significative avec la hauteur de la colonne. On a établi, au moyen de modèles semi-théoriques, des corrélations pour les profils de rétention.

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