Solid entrainment rate into gas and gas—solid,two-phase jets in a fluidized bed

A mathematical model for solid entrainment into a permanent flamelike jet in a fluidized bed was proposed. The model was supplemented by particle velocity data obtained by following movies frame by frame in a motion analyzer. The experiments were performed at three nominal jet velocities (35, 48, and 63 m/s) and with solid loadings ranging from 0 to 2.75. The particle entrainment velocity into the jet was found to increase with increases in distance from the jet nozzle, to increase with increases in jet velocity and to decrease with increases in solid loading in the gas—solid, two-phase jet.