Premium
The influence of solid properties on the just‐suspended agitation requirements of pitched‐blade and high‐efficiency impellers
Author(s) -
Myers Kevin J.,
Fasano Julian B.,
Corpstein Robert R.
Publication year - 1994
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.5450720424
Subject(s) - impeller , blade (archaeology) , turbine , particle (ecology) , power (physics) , torque , mechanics , materials science , rushton turbine , particle size , mechanical engineering , control theory (sociology) , engineering , physics , computer science , thermodynamics , geology , chemical engineering , control (management) , artificial intelligence , oceanography
Extensive experimental data indicates that the particle property dependence of the just‐suspended agitation speed of pitched‐blade turbines and high‐efficiency impellers can be described with reasonable accuracy using a Zwietering power‐law correlation. However, there are indications that the effect of particle size is divided into two regimes, one for particle sizes less than 1000 μm and one for larger particles. Comparison of the two impeller types indicates that the pitched‐blade turbine requires somewhat higher power inputs and substantially higher torque levels to produce the same level of agitation as the high‐efficiency impeller.