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The fluidized bed is operated so that it is maintained at a superficial velocity, U , such that U = K s U m f
The fluidized bed is operated so that it is maintained at a superficial velocity,
such that where is a constant multiplier, and is the minimum
fluidizing velocity. is maintained at a constant value by adjusting the flow
rate of the fluidizing air so that the pressure drop across the distributor plate
has the value predicted by theoretical equations used to design it see below
when
The density of powder is and a sieve analysis for it is given in
Table
At the operating conditions of the fluidized bed the density of the fluidizing gas
is and its viscosity is
The diameter of the fluidized bed is and the diameter of the distributor
plate is the same. The distributor has orifices each in diameter.
The pressure drop across the distributor at operating conditions is
Calculate use the table belowTable Sieve analysis of sample of powder S
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