Fundamentals of Hydrodynamics and Mass Transfer in a Three-Phase Fluidized Bed System

Song, J., Hyndman, C.L., Jakher, R.K., Hamilton, K., Kryuchkov, S. and Kantzas, A.

DOI: 10.1016/S0009-2509(99)00219-5
4th International Conference on Gas-Liquid and Gas-Liquid-Solid Reactor Engineering, Delft, The Netherlands, August 23-25, 1999;
Chem. Eng. Sci., 54(21), November 1999, Pages 4967-4973.


Particle dynamics of a three-phase fluidized bed are characterized using radioactive particle tracking (RPT). Solid–liquid mass transfer measurements were performed using a benzoic acid particle on a flexible tether. Columns with 12.7 cm inner diameter and 160–200 cm in length were used. The fluids used are water and air, and the solids are spherical polycarbonate particles 6.35 mm in diameter with a density of 1160 kg/m3. All experiments are conducted at atmospheric pressure and room temperature. Analysis of RPT data, for free and tethered particles, shows that tethering does not affect particle velocities in the main bed region.

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