Hydrodynamics in a Liquid Solid Circulating Fluidized Bed–A Review

Abstract

In this study, the liquid-solid circulating fluidised bed and its performance at various operating conditions were critically reviewed. Hydrodynamic includes pressure drop across the bed, phase hold up distribution, flow regime, flow structure of each phase and solid circulation rate. Detailed analysis of the axial and radial solid distributions, average solid holdup, solid circulation rate, critical transitional velocity for solid at different densities and fluids at various viscosities was discussed. The effect of increasing the liquid viscosity during the heat and mass transfer phenomena in LSCFB has to be studied extensively as the industrial processing fluids are highly viscous.