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Bed collapse technique for estimating parameters of generalized wake model for a three‐phase fluidized bed
Author(s) -
Jin Yong,
Zhang Junping,
Yu Zhiqing
Publication year - 1993
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.270160209
Subject(s) - wake , fluidized bed , bubble , pressure drop , mechanics , fluidization , drop (telecommunication) , three phase , phase (matter) , materials science , thermodynamics , engineering , physics , mechanical engineering , electrical engineering , quantum mechanics , voltage
The hydrodynamic behaviour of a cocurrent gas‐liquid‐solid fluidized bed was studied by using the bed collapse technique. The key parameters, k and x , of the generalized wake model were estimated. Compared with other existing methods for evaluating the parameters k and x , the bed collapse technique shows some distinct advantages. Parameters are derived directly from experiments in a three‐dimensional three‐phase fluidized bed and there is no need to assume that a bubble and its wake form a perfect sphere. Hold‐up data of the three‐phase fluidized bed predicted by the generalized wake model with k and x estimated by the bed collapse technique are in good agreement with those obtained via the traditional pressure‐drop method.