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A new spouting regime in beds of coarse particles deeper than the maximum spoutable height
Author(s) -
Littman H.,
Morgan M. H.
Publication year - 1986
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450640322
Subject(s) - breakup , mechanics , fluidization , spheres , fluidized bed , geology , phase diagram , materials science , meteorology , thermodynamics , phase (matter) , physics , quantum mechanics , astronomy
A new spouting regime for coarse particles in beds deeper than the maximum spoutable height has been identified and its location on a phase diagram is presented for an air spouted bed of 5 mm glass spheres. The periodic formation and breakup of single bubbles originating at the top of the spout at lower gas velocities than required to observe the new regime has been studied using high speed photographs. An analogy is drawn between these observations and the breakup of bubbles in a turbulently fluidized bed.