Bed expansion - Extending correlations for fluidized beds with inserts to open fluidized beds

Mark C. Leaper, Nidal Hilal

Research output: Contribution to journalArticle


Bed expansion occurs during the operation of gas-fluidized beds and is influenced by particle properties, gas properties and distributor characteristics. It has a significant bearing on heat and mass transfer phenomena within the bed. A method of predicting bed expansion behavior from other fluidizing parameters would be a useful tool in the design process, dispensing with the need for small-scale trials. This study builds on previous work on fluidized beds with vertical inserts to produce a correlation that links a modified particle terminal velocity, minimum fluidizing velocity and distributor characteristics with bed voidage in the relationship with P as the pitch between holes in the perforated distributor plate.

Original languageEnglish (US)
Pages (from-to)655-658
Number of pages4
JournalChemical Engineering and Technology
Issue number5
StatePublished - May 1 2007



  • Distributor
  • Expansion
  • Fluidized beds

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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