Question

Why pressure drop remains constant after fliuydisation?

Answer 1

hie :)

The velocity at which this phenomena occurs is called minimum fluidization velocity. Beyond this, as we increase the velocity of the fluid, the bed of solids expands which leads to rise in bed porosity (voids in the bed as distance between the particles increases due to bed expansion

thanks

@krish

Answer 2

It is observed that the bed pressure dropincreases gradually with increase in velocity up to certain limit after which it remains constant for fluidization process. In spouting process, initially the bed pressure drop increases gradually with increase in minimum gas velocity up to certain limit.