The tilting fluidized bed: A re-examination

Experiments have been performed in which a fluidized bed in a metal container was tilted and observed with X-rays. Previous experiments using such a system emphasized the importance of interparticle forces in determining bed behaviour. In the present work these forces were controlled through the use...

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Bibliographic Details
Published in:Powder technology 1996-10, Vol.89 (1), p.29-36
Main Authors: Gilbertson, M.A., Yates, J.G.
Format: Article
Language:English
Subjects:
Angle of tilt
Applied sciences
Bed behaviour
Chemical engineering
Exact sciences and technology
Fluidization
Metal container
Tilted fluidized bed
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Summary:Experiments have been performed in which a fluidized bed in a metal container was tilted and observed with X-rays. Previous experiments using such a system emphasized the importance of interparticle forces in determining bed behaviour. In the present work these forces were controlled through the use of a metal container and by varying the humidity of the fluidizing gas. It was found that, as previously reported, when the container was tilted the surface of the bed also tilted; however, unlike in the previous experiments, the angle of tilt of the bed surface was nearly always less than that of the container. The two angles were closer if there was moisture in the fluidizing air. The angle of tilt at which the bed failed decreased with increasing gas velocity. A theory to explain the behaviour of the tilting bed is proposed.
ISSN:0032-5910
1873-328X
DOI:10.1016/S0032-5910(96)03150-6