Abstract
The size distribution of gas bubbles leaving a three-phase fluidized bed has been measured photographically, and the influence of changes in liquid and gas flow rates and in gas distributor design on the size of gas bubbles has been studied. It has been found that gas bubble size is reduced by increase in liquid velocity. At low liquid velocities the bubble size is reduced by an increase in gas flow rate, but as the liquid velocity is increased the bubble size becomes independent of gas flow rate. Away from the gas distributor, the bubble size distribution is independent of the distributor design. The experimental results have been related qualitatively to the competing effects in a three-phase fluidized system of bubble splitting and bubble coalescence.
Published Version
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