ANALYSIS OF FLUID-DYNAMICS IN A SPOUTED BED WITH CONTINUOUS SOLIDS FEEDING

An experimental study was carried out on fluid dynamics and solids mov ement in a modified spouted bed with the feeding of particles through the base, at different air rates, particle feed rates and bed heights. Moreover, a model was adapted for the base-feed configuration, and re sults of its numerical resolution were compared with experimental data . Analysis showed that the modeling of the bed is complex due to a lac k of knowledge of fundamental spout parameters, such as the fluid-part icle drag coefficient. Air velocities in the spout were predicted by t he model with a maximum deviation of 15%, whereas prediction of partic le velocities in the spout yielded maximum deviations of 50%.