The effects of liquid properties and bed hydrodynamics on the distribution of liquid on solid fluidized particles in a cold-model fluidized bed

Liquid viscosity, surface tension and liquid-solid contact angle affect the cohesiveness of wet solid particles and agglomerate formation. Varsol™ and coke were selected for a cold simulation of Fluid Cokers. The ratio of the total free liquid to the total mass of injected liquid, g(t), was calculated for different gas to liquid ratios (GLR) and different fluidization velocities during injection (vI) and after injection (vR). The time constant of agglomerate breakage  (τ) was obtained based on an exponential curve fit to g(t):gt=1+g0−1e−tτ.