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Gas dispersion in downflowing high velocity fluidized beds
Author(s) -
Cao Chunshe,
Weinstein Herbert
Publication year - 2000
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.690460311
Subject(s) - mixing (physics) , dispersion (optics) , tracer , fluidized bed , mechanics , helium , fluidization , helium gas , materials science , fluidized bed combustion , chemistry , thermodynamics , physics , optics , nuclear physics , organic chemistry , quantum mechanics
Measurements are presented of gas mixing in a downflowing high‐velocity fluidized bed using helium tracer detected by an on‐line analyzer. It was found that gas backmixing is very limited in the downer, and the lateral mixing is comparable with that in the riser. A dispersion model is applied to characterize the behavior of the gas mixing in the two‐phase downflowing mixture.