Question: A fluidization catalyst is fluidized with air at T=82C and P=1atm. The catalyst is spherical in shape with specific gravity SG-1.8 and diameter d=200m.

A fluidization catalyst is fluidized with air at T=82C and P=1atm. The catalyst is spherical in shape with specific gravity SG-1.8 and diameter d=200m. The bed is vertical and has a static porosity of 0.5. N.B. g=9.8 m/s and 1m=10m (a) Determine the settling velocity of a single catalyst particle in air at T=82C and P=1atm. (b) Determine the minimum fluidization velocity of the bed. (c) Determine the minimum pressure drop per unit length for fluidization. [Ans. (a) 0.993m/s, (b) 0.055m/s, 8824.87 Pa/m]

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