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− The effect of internal and shroud nozzle distributor to bubbling fluidized beds which has the size of 0.3 mID × 2.4 m-high column was modeled by CPFD (Computational Particle-Fluid Dynamics). Metal-grade silicon particles (MG-Si) were used as bed materials which have dp = 149 μm, ρp = 2,325 kg/m 3 and Umf = 0.02 m/s. Total bed inventory and static bed height were 75 kg and 0.8 m, respectively. Effect of vertical internal on the bubble rising velocity was investigated. Bubbles were split by internal when the axial position of the internal from the distributor, z = 0.45 m. Bed pressure drop and axial solid holdup were not affected by internal. However, in the case that axial distance of internal from distributor was too close to jet penetration length, bubbles were not separated and bypassed internal, and faster than without internal or z = 0.45 m.

CPFD Simulation of Bubble Flow in a Bubbling Fluidized Bed with Shroud Nozzle Distributor and Vertical Internal