✦ LIBER ✦

On the two-phase theory of fluidization

✍ Scribed by J.R. Grace; R. Clift

Publisher: Elsevier Science
Year: 1974
Tongue: English
Weight: 786 KB
Volume: 29
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(74)80039-4

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✦ Synopsis

The distribution of gas flow between bubbles and the dense phase in a fluidized bed is considered. By deriving general equations for gas and solids continuity in a freely-bubbling fluidized bed, the possible contributions to the invisible gas flow are formulated. It is shown that the gross assumptions inherent in "two-phase theories" of fluidization are not justified. Measurements of visible bubble flow and bubble volume fraction can give nothing more than rough estimates for the gas flow through the two phases.

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