Some hydrodynamic aspects of 3-phase inverse fluidized bed--颗粒学报PARTICUOLOGY

Bandaru, K. S. V. S. R., Murthy, D. V. S., & Krishnaiah, K. (2007). Some hydrodynamic aspects of 3-phase inverse fluidized bed. China Particuology, 5(5), 351–356. https://doi.org/10.1016/j.cpart.2007.06.002

Some hydrodynamic aspects of 3-phase inverse fluidized bed

Krishna S.V.S.R. Bandaru ^a, D.V.S. Murthy ^a, K. Krishnaiah ^a *

a Department of Chemical Engineering, Indian Institute of Technology Madras, Chennai 600036, India

10.1016/j.cpart.2007.06.002

Volume 5, Issue 5, October 2007, Pages 351-356

Received 14 April 2006, Accepted 13 June 2007, Available online 12 September 2007.

E-mail: krishnak@iitm.ac.in

Highlights

Abstract

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.

Graphical abstract

Keywords

Inverse fluidization; Inverse fluidized bed; Hydrodynamics; Phase holdup; Axial holdup

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