THERMAL SCIENCE

International Scientific Journal

Bo Leckner

,

Genadij I. Palchonok

,

Filip Johnsson

PRESSURE FLUCTUATIONS IN GAS FLUIDIZED BEDS

ABSTRACT
The pressure fluctuations in a fluidised bed are a result of the actions of the bubbles. However, the bubbles may be influenced by the air supply system and by the pressure drop of the air distributor. These interactions are treated for low as well as for high velocity beds by means of a simple model of the principal frequency of the pressure fluctuations. The model includes the interaction with the air supply system and describes qualitatively two important bubbling regimes: the single bubble regime, important for systems with low pressure drop air distributors, and the exploding bubble regime for high velocity beds.
KEYWORDS
fluidized bed, bubbles, pressure fluctuations, air distributors, air distributors
PAPER SUBMITTED: 2002-08-12
PAPER REVISED: 2002-09-15
PAPER ACCEPTED: 2002-09-20
DOI REFERENCE: https://doi.org/10.2298/TSCI0202003L
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2002, VOLUME 6, ISSUE Issue 2, PAGES [3 - 11]
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Pressure fluctuations in gas fluidized beds

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