Question

silica sand particles of spherical shape have a density of 2650 kg/m^3 and voidage 43 percentage when rest in a packed bed column of diameter D=10 mm. the total mass of particles is 1 kg.the bed is to be fludised by a flowing non reacting gas moving upwards through the bed of solids.

i) what is the bulk density of the solid particle? 4 marks

ii)calculate the static bed height (H) by the solid particles when rest in the cylindrical vessel (units: m) 4 marks

iii) calculate the expanded bed height (H0) at minimum fludization conditions if known that the bed porosity at such condition is =.45 4 marks  

the area of a circle of radius d is pi d^4/4

Answer 1