MASS-TRANSFER FROM SOLID PARTICLES TO FLUID IN GRANULAR BED

Mass transfer from assemblage of irregularly shaped particles to fluid was analysed using a combination of ''cell'' and ''channel'' concepts . The theoretical analysis predicts that blending active grains with i nert spheres will result in an enhancement of the mass transfer due to a decrease of the overlapping of the neighbour particles and to a cha nge of the bed geometry. The comparison between the derived relationsh ip and available literature and our own experimental data shows a reas onably good agreement.