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The effect of impeller pumping and fluid rheology on solids suspension in a stirred vessel
Author(s) -
Wu Jie,
Zhu Yonggang,
Pullum Lionel
Publication year - 2001
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.5450790201
Subject(s) - impeller , materials science , suspension (topology) , slip factor , slurry , newtonian fluid , mechanics , viscosity , rheology , composite material , physics , mathematics , pure mathematics , homotopy
Pumping velocities of different impellers were measured using laser Doppler velocimetry. It was found that there is a link between impeller pumping capacity and the 5 parameter in the Zwietering correlation. Measurements showed that N js increases with impeller spacing for dual impeller configurations. A dual‐impeller configuration shows less sensitivity to solids loading change than a single‐impeller configuration, and the change in N js is larger for small impeller spacing than for large impeller spacing. An increase in slurry cloud height and a reduction in N js resulted at a small increase of non‐Newtonian viscosity.