Some hydrodynamic aspects of 3-phase inverse fluidized bed  

作　　者：Krishna S.V.S.R. Bandaru D.V.S. Murthy K. Krishnaiah 

机构地区：[1]Department of Chemical Engineering, Indian Institute of Technology Madras

出　　处：《China Particuology》2007年第5期351-356,共6页

摘　　要：Hydrodynamics of 3-phase inverse fluidized bed is studied experimentally using low density particles for different liquid and gas velocities. The hydrodynamic characteristics studied include pressure drop, minimum liquid and gas fluidization velocities and phase holdups. The minimum liquid fluidization velocity determined using the bed pressure gradient, decreases with increase in gas velocity. The axial profiles of phase holdups shows that the liquid holdup increases along the bed height, whereas the solid holdup decreases down the bed. However, the gas holdup is almost uniform in the bed.Hydrodynamics of 3-phase inverse fluidized bed is studied experimentally using low density particles for different liquid and gas velocities. The hydrodynamic characteristics studied include pressure drop, minimum liquid and gas fluidization velocities and phase holdups. The minimum liquid fluidization velocity determined using the bed pressure gradient, decreases with increase in gas velocity. The axial profiles of phase holdups shows that the liquid holdup increases along the bed height, whereas the solid holdup decreases down the bed. However, the gas holdup is almost uniform in the bed.

关 键 词：Inverse fluidization Inverse fluidized bed HYDRODYNAMICS Phase holdup Axial holdup 

分 类 号：TQ021[化学工程]