Effect of vertical baffles on particle mixing and drying in fluidized beds of group D particles--颗粒学报PARTICUOLOGY

Law, C. L., Tasirin, S. M., Daud, W. R. W., & Geldart, D. (2003). Effect of vertical baffles on particle mixing and drying in fluidized beds of group D particles. China Particuology, 1(3), 115-118. https://doi.org/10.1016/S1672-2515(07)60121-3

Effect of vertical baffles on particle mixing and drying in fluidized beds of group D particles

Chung Lim Law ^a *, Siti Masrinda Tasirin ^a, Wan Ramli Wan Daud ^a, Derek Geldart ^b

a Chemical and Process Engineering Department, Engineering Faculty, Universiti Kebangsaan Malaysia, Bangi, 43600 Malaysia
b Powder Research Ltd., 7, Westminster Gate Burn Bridge, Harrogate, North Yorkshire, HG3 1LU, United Kingdom

10.1016/S1672-2515(07)60121-3

Volume 1, Issue 3, July 2003, Pages 115-118

Received 26 March 2003, Accepted 19 June 2003, Available online 14 December 2007.

E-mail: chunglimlaw@hotmail.com

Highlights

Abstract

This study reports the effect of vertical baffles on the group D powder mixing and drying characteristics in a batch fluidized bed dryer. Results obtained in this study showed that operating the fluidized bed dryer with vertical baffles gave better particle mixing. This is due to the fact that the vertical baffles acted to limit the growth of small bubbles into large bubbles and the small bubbles caused more vigorous mixing in the bed of particles before finally erupting at the bed surface. Thus, insertion of vertical baffles is a useful way to process group D particles in a fluidized bed, especially when the fluidized bed is large.

Graphical abstract

Keywords

drying; fluidization; hydrodynamics; kinetics; drying curves; vertical baffles

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