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Bubble growth by coalescence in gas fluidized beds
Author(s) -
Argyriou Dimitris T.,
List Harvey L.,
Shinnar Reuel
Publication year - 1971
Publication title -
aiche journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.958
H-Index - 167
eISSN - 1547-5905
pISSN - 0001-1541
DOI - 10.1002/aic.690170126
Subject(s) - bubble , coalescence (physics) , fluidized bed , mechanics , economies of agglomeration , materials science , mathematics , thermodynamics , chemistry , mineralogy , physics , engineering , chemical engineering , astrobiology
Bubble size and distribution of bubble sizes were studied in an air fluidized bed, 11.5 in. in diam. and 3 ft. high, by taking motion pictures of the bubbles breaking the top surface of the bed and by determining the size of the bubbles from the film. The distribution of bubble volumes at a given bed height was expressed as a gamma distribution with parameters obtained from the observations. A statistical mechanical method proposed by Hulburt and Katz for studies in agglomeration of particles was used in the mathematical formulation of the problem. A proposed mechanism of bubble growth by coalescence in gas fluidized beds resulted in a one parameter model. Comparisons of the distributions predicted by the model to the experimentally obtained profiles yielded the parameter of the model.