Chan, Chian Wen, Brems, Anke, Mahmoudi, Shiva, Baeyens, Jan, Seville, Jonathan P. K., Parker, David, Leadbeater, Thomas and Gargiuli, Joseph. (2010) PEPT study of particle motion for different riser exit geometries. Particuology, Vol.8 (No.6). pp. 623-630. ISSN 1674-2001

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Abstract

Laboratory and industrial risers are equipped with exits of many different layouts, and numerous publications discuss the influence of riser exit geometry on local and overall solids hydrodynamics in the riser. The present paper reviews literature findings mostly based upon indirect experimental techniques and often somewhat contradictory. Direct measurement of particle velocity and particle occupancy near and in the riser exit provide a better indication of the effect of riser exit geometry. Positron Emission Particle Tracking (PERT) was used in this work for the first time to investigate the exit region of the riser. An abrupt or sharp exit causes particles to be knocked out of the gas flow, so forming a recirculation or reflux region in the upper part of the riser. This is much less pronounced with a curved or gradual exit. (C) 2010 Chinese Society of Particuology and Institute of Process Engineering, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.

Item Type:	Journal Article
Divisions:	Faculty of Science > Engineering
Journal or Publication Title:	Particuology
Publisher:	Elsevier
ISSN:	1674-2001
Date:	2010
Volume:	Vol.8
Number:	No.6
Page Range:	pp. 623-630
Identification Number:	10.1016/j.partic.2010.08.006
Status:	Peer Reviewed
Publication Status:	Published
Access rights to Published version:	Restricted or Subscription Access
URI:	http://wrap.warwick.ac.uk/id/eprint/41868

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