A fluidized bed dryer is charged with a batch of spherical catalyst particles with an average diameter of 800 m and a wet particle density of 1,700 kg m 3 The initial bed height is 1 2 m (a) With air at 190F, what is the minimum fluidization velocity (b) If the dryer is operated at twice the minimu...

a The minimum fluidization velocity is the velocity of air required to just suspend the particles in the bed It can be calculated using the following equation umf gdps g 150 where g is the acceleratio ...

A fluidized bed dryer is charged with a batch of spherical catalyst particles with an average diameter

Question:

A fluidized bed dryer is charged with a batch of spherical catalyst particles with an average diameter of 800 m and a wet particle density of 1,700 kg/m³. The initial bed height is 1.2 m.

(a) With air at 190°F, what is the minimum fluidization velocity?

(b) If the dryer is operated at twice the minimum fluidization velocity, estimate the gas-to-particle heat transfer coefficient and the overall volumetric coefficient.

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