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Investigations of fluid dynamics in mechanically stirred aerated slurry reactors
Author(s) -
Wong C. W.,
Wang J. P.,
Huang S. T.
Publication year - 1987
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.5450650308
Subject(s) - slurry , rushton turbine , suspension (topology) , impeller , materials science , aeration , mechanics , draft tube , particle (ecology) , rotational speed , turbine , chemistry , waste management , mechanical engineering , thermodynamics , physics , composite material , engineering , mathematics , pure mathematics , geology , oceanography , homotopy
The fluid dynamics of stirred aerated slurry reactors with A‐310® propeller, 4‐blade 45° pitch turbine and 6‐blade Rushton disc turbine were studied over a wide range of gas flow rates. With respect to power consumption, gas hold‐up, and fluid dynamically limiting cases, viz., suspension and flooding, the Rushton disc turbine was found to be the best in stirred aerated slurry reactors. The influence of particle density, shape and mass fraction and of liquid properties on gassed critical stirrer speed, N jsg , and of gassed power input per unit volume, P jsg , on particle suspension and gas dispersion, were investigated. Empircal correlations in combination with that of Zwietering were established for scale‐up design in three‐phase slurry reactors.