Elutriation Rate of Particles from a Turbulent Fluidized-Bed

To obtain the fundamental data for designing the particle circulation system of a new turbulent fluidized-bed catalytic reactor, the elutriation rate of particles from a turbulent fluidized bed was observed for two kinds of particles by using a cold model. Both kinds of particles used in the experiment were classified as group A particles of the Geldart map. The particles were almost the same size, sbout 65 μm, but the densities of the two kinds were different--1, 580 kg/m3 and 2, 150 kg/m3, respectively. Based on the experimental results obtained in this work, the Tanaka-Shinohara equation previously proposed for estimating the elutriation rate constant Ki* was modified, and the following a new equation was obtained. Ki*/ρg (u0-ut) =0.91· [(u0-ut) 2/g·dpi] 1.2· (ρp-ρg/ρg) -1.1