Question

A fluidization catalyst, specific gravity 1.8, is fluidized with air at 550K and 2atm. The catalyst may be assumed spherical, with diameter 300 um. The gravitational acceleration is 9.8 ms-2. The static void fraction is 0.42. The unfluidized bed height is 1.5 m. Find in SI units: The minimum pressure drop will be: *

Answer 1

g lm3 -1.2838 74 Pa = 1283-874 Pa kg/m3 [as 1 kg = 1 oso g Now, minimen pressure doop (OP min) is given by Almin =g (P.-Pa) (1 - E) .. Prin = 1.5x2.8 1x (1800 - 1-283874) (1-0-23) pa Almin = 15351-50 25 kPa Sprin £ 15.3515