Particle Technology

fluidisation

Problems 7.8

Question 2.iv


The Kozeny-Carman equation and the equation for bed weight per unit area are:
Kozeny-Carman equation       Fluidised bed weight per unit area equation

The particle size is 500 microns and the liquid density and viscosity are 1000 kg m-3 and 0.001 Pa s. The solid density was 2800 kg m-3 and the porosity was 0.554.


The minimum fluidising velocity is (m s-1):

  a) 9.4x10-6
b) 0.021
c) 0.017
d) 0.0094
Note, combine your equations to derive the equation for minimum fluidising velocity first.

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