Minimum Fluidization Velocity in a Mobile Bed

Abstract

Effects of the characteristics of packings and supporting grids, gas holdups and liquid flow rates on the minimum fluidization velocity for a mobile bed have been investigated. The minimum fluidization velocity, Umf, is determined by the relation between the pressure drop across the bed and the flow rate of gas, and is compared with the minimum fluidization velocity, UmfUL=0, for a conventional solid-gas fluidization system. A correlation of Umf with UmfUL=0, the flow rate of liquid and the characteristics of supporting grids is presented.