Unsaturated liquid percolation flow through nonwetted packed beds

Liu, D. Y., Wang, G. X. and Litster, J. D. (2002) Unsaturated liquid percolation flow through nonwetted packed beds. Aiche Journal, 48 5: 953-962. doi:10.1002/aic.690480505


Author Liu, D. Y.
Wang, G. X.
Litster, J. D.
Title Unsaturated liquid percolation flow through nonwetted packed beds
Journal name Aiche Journal   Check publisher's open access policy
ISSN 0001-1541
Publication date 2002-05
Sub-type Article (original research)
DOI 10.1002/aic.690480505
Volume 48
Issue 5
Start page 953
End page 962
Total pages 10
Place of publication Hoboken, NJ, U.S.A.
Publisher John Wiley & Sons
Collection year 2002
Language eng
Subject C1
290699 Chemical Engineering not elsewhere classified
670801 Iron and steel (e.g. ingots, bars, rods, shapes and sections)
Abstract The unsaturated flow of liquid through packed beds of large particles was studied using six different liquids, all with contact angles greater than 90degrees on the bed packing (wax spheres of 9, 15 and 19.4 mm diameter). The liquid flow was discrete in nature, as drops for low flow rates and rivulets for high flow rates. For unsaturated liquid flows, the actual percolation velocity, not superficial velocity, should be used to characterize the flow. The percolation velocity did not vary with packed-bed depth, but was a strong function of liquid flow rate, liquid and particle properties. Effects of liquid and particle properties (but not flow rate) are well captured by a simple correlation between the liquid-particle friction factor and Reynolds number based on actual percolation velocities. Liquid dispersion, characterized by the maximum dispersion angle, varies significantly with liquid and particle properties. The tentative correlation suggested here needs further validation for a wider range of conditions.
Keyword Engineering, Chemical
Furnace Lower Zone
Blast-furnace
Simulation
Model
Regimes
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Chemical Engineering Publications
 
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Created: Tue, 14 Aug 2007, 18:07:48 EST