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Bed Expansion – Extending Correlations for Fluidized Beds with Inserts to Open Fluidized Beds
Author(s) -
Leaper M. C.,
Hilal N.
Publication year - 2007
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.200600403
Subject(s) - distributor , fluidized bed , fluidization , mass transfer , materials science , work (physics) , expansion ratio , mechanics , superficial velocity , particle (ecology) , engineering , composite material , geology , mechanical engineering , waste management , flow (mathematics) , physics , oceanography
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.