The transport velocity (utri) in an inclined fluidized-bed was investigated by varying the bed angle relative to the horizontal plane (0o-90o), the particle diameter (0.021-0.925mm), and density (1,272-4,503 kg/m3). This study employed the emptying time method to determine the transport velocity. The transport velocity for the vertical fluidized-bed (utr90) was revealed to increase appreciably with the aspect ratio of the fluidized-bed. The transport velocity decreased as the bed angle increased. The ratio of the transport velocity to that for the vertical bed (utri/utr90) decreased with an increase in either the bed angle or the ratio of the particle diameter (dp) to the criticalparticle diameter (dp *), i.e., the maximum particle diameter at which the sum of the interparticle adhesion forces had a dominant influence on particle entrainment. Correlations for the transport velocity according to the bed angle relative to the horizontal plane were proposed successfully, based on the experimental data.
Perales JF, Coll T, Llop MF, Puigjaner L, Arnaldos J, Casal J, in Circulating Fluidized Bed Technology III, Basu P, Horio M, Hasatani M, Eds., Pergamon Press, New York, 73 (1991).
Ishii H, Horio M, Adv. Powder Technol., 2, 25, 1991