Abstract
The elutriation rate constant for the gas-solid fluidized bed with and without vertical multi-tube internals was determined by a continuous steady-state operation. Silica sand, FCC, and glass beads of a wide size distribution were used. For fine particles belonging to group A of Geldart''s classification, the elutriation rate was not affected by bed internals. For coarse particles, however, the rate was affected by the internals. The elutriation rate constant for the fluidized bed with multitube internals was affected by the gas velocity, terminal velocity of particles, hydraulic diameter of bed and minimum fluidization velocity. Empirical equations for the elutriation rate constant are presented.
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