Question: A fixed bed of refractory spheres, e m = 0 . 4 , sandwiched between two perforated plates is to serve as a distributor for

A fixed bed of refractory spheres, e m

= 0.4,

sandwiched between two perforated plates is to serve as a distributor for a fluidized bed. Determine the diameter of spheres to be used if the thickness of the fixed bed is to be

20

cm and

^= 4

kPa. To simplify the calculations, assume that the two perforated plates have large enough open areas so that they do not contribute to the pressure drop across the distributor.

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