Mass transfer in semifluidized beds for solid‐liquid system

A new fluid‐solid contacting technique known as Semifluidization has been studied. Mass transfer data were obtained for a benzoic acid–water system, and correlations in terms of mass transfer factors and over‐all void fractions (for both packed and fluidized sections) are presented. Previous mass transfer correlations for fixed and fluidized beds are critically evaluated with respect to the limitation and applicability and are discussed in relation to semifluidized‐bed mass transfer correlations.