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Analysis of Liquid Flow Distribution in Trickling Flow Reactor Using Computer-Assisted X-Ray Tomography
Toye, Dominique; Marchot, Pierre; Crine, Michel et al.
1995In Chemical Engineering Research and Design, 73 (A3), p. 258-262
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Keywords :
x-ray tomography; trickling filters; hydrodynamics; columns
Abstract :
[en] In this paper, we propose a new experimental technique, based on X-ray tomography, allowing the analysis of the gas-liquid-solid phase distribution in trickling flow reactors. Tomography refers to the cross-sectional imaging of an object from data collected by illuminating this object from many directions. The experimental set-up allows the scanning of transverse sections of rather large columns: up to 0.8 m diameter and 2 m height can be irradiated. Experiments were carried out both without and with liquid flow. In the absence of liquid, the reconstructed images give a view of the non-uniformity of the solid phase distribution. The images obtained are very complex because they result from the superposition of several distributions with different Spatial scales. We show the existence of a first spatial scale which allows us to separate properties belonging to the individual packing elements from those belonging to the bed scale. When liquid is flowing through the packed bed X-ray scans give a clear picture of the distribution of the liquid phase saturation, despite the very low liquid film thickness. Average values of this liquid phase saturation are determined and confronted with a partial wetting model.
Disciplines :
Chemical engineering
Author, co-author :
Toye, Dominique  ;  Université de Liège - ULiège > Département de chimie appliquée > Génie de la réaction et des réacteurs chimiques
Marchot, Pierre ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Systèmes polyphasiques
Crine, Michel ;  Université de Liège - ULiège > Département de chimie appliquée > Génie chimique - Opérations physiques unitaires
L'Homme, Guy ;  Université de Liège - ULiège > Services généraux (Faculté des sciences appliquées) > Relations académiques et scientifiques (Sciences appliquées)
Language :
English
Title :
Analysis of Liquid Flow Distribution in Trickling Flow Reactor Using Computer-Assisted X-Ray Tomography
Publication date :
1995
Journal title :
Chemical Engineering Research and Design
ISSN :
0263-8762
eISSN :
1744-3563
Publisher :
Institution of Chemical Engineers
Volume :
73
Issue :
A3
Pages :
258-262
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 14 September 2009

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