Abstract
To investigate gas-particle mass transfer phenomenon with relation to bubble movement in the bed, gas bubbles were generated continuously from nozzles in two-and three-dimensional fluidized beds. The size of bubbles and the mass transfer rate were measured in the same experimental condition. Gas-particle mass transfer phenomenon was simulated by a suitable two-phase model based on the bubble size in the bed. From the simulation, empirical equations for the ratio of cloud to bubble volume in a two- and three-dimensional fluidized bed are proposed.
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