PRESSURE FLUCTUATIONS IN GAS FLUIDISED 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

Dates

  • Submission Date2002-08-12
  • Revision Date2002-09-15
  • Acceptance Date2002-09-20

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Volume 6, Issue 2, Pages3 -11