Gas-liquid mass transfer in two and three-phase upflows through a vertical tube

Authors

  • Kazuhiko Ishida,

    1. JGC Corporation, 14-1 Bessho 1-chome, Minami-ku, Yokohama 232, Japan
    Search for more papers by this author
  • Shigeyuki Enda,

    1. Mitsui Mining and Smelting Co., Ltd., 2-1-1 Nihonbashi-Muromachi, Chuo-ku, Tokyo 103, Japan
    Search for more papers by this author
  • Ken-Ichi Kikuchi,

    Corresponding author
    1. Department of Materials Engineering and Applied Chemistry, Mining College, Akita University, 1-1, Tegata-Gakuencho, Akita 010, Japan
    • Department of Materials Engineering and Applied Chemistry, Mining College, Akita University, 1-1, Tegata-Gakuencho, Akita 010, Japan
    Search for more papers by this author
  • Hiroshi Takahashi

    1. Department of Materials Engineering and Applied Chemistry, Mining College, Akita University, 1-1, Tegata-Gakuencho, Akita 010, Japan
    Search for more papers by this author

Abstract

Oxygen absorption rates were measured to determine volumetric coefficients of gas-liquid mass transfer coefficients kLa in gas-liquid and gas-liquid-solid upward flows through a vertical tube. The liquid was deionized water or aqueous glycerol solution, and the solids were glass beads or polystyrene beads. The dependencies of kLa on gas velocity, liquid velocity, temperature, solid material, and solid concentration were examined. The experimental results were correlated with empirical equations. The mechanisms of the solid loading effect are discussed.

Abstract

On a mesuré des vitesses d'absorption d'oxygène afin de déterminer les coefficients volumétriques de transfert de matière gaz-liquide kLa dans des écoulements ascendants gaz-liquide-solide dans un tube vertical. Le liquide est de l'eau déionisée ou une solution de glycérol aqueuse; les solides consistent en des billes de verre ou de polystyrène. La dépendance de kLa par rapport à la vitesse de gaz, le débit liquide, la température, le matériau solide et la concentration en solides est étudiée. Les résultats expérimentaux sont corrélés à des équations empiriques. On étudie les mécanismes de l'effet de chargement des solides.

Ancillary