Flow behavior of liquid and multicomponent mixtures of solid
particles in fluidizing columns
with an external conduit was investigated for a self-circulating
operation by an airlift effect.
Experimental and analytical results are presented for circulating
rates of liquid and particles
and for axial changes in holdups of gas and solid in the column.
From good agreement between
both results, it was found that a one-dimensional
sedimentation−dispersion model and
mechanical energy balance equation were successfully applied to predict
the axial change in
gas and solid holdups as well as the circulating rates of liquid and
solid particles in the columns.
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