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Solids distribution in tall tanks
Author(s) -
Cope Richard F.,
Somasi Madan,
Kar Kishore K.
Publication year - 2011
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.20552
Subject(s) - distribution (mathematics) , environmental science , waste management , engineering , mathematics , mathematical analysis
Uniformly distributing slurry solids in “tall” (≥2:1 aspect ratio) process vessels is a significant challenge in the chemical industry. This work determined the performance of various multi‐tier agitation systems in uniformly distributing a settling solid throughout water in a “tall” laboratory vessel. It used a 0.445 m ID Plexiglas® tank, with a slurry height of 0.889 m, to determine how solids distribution changes with solids loading (wt.%), impeller speed, and impeller type. Some impeller types uniformly distributed the solids even before energy input exceeded 1.00 W/kg. Significantly higher energy improved solids distribution little because flow within the vessel eventually became choked.