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The influence of baffle off‐bottom clearance on the solids suspension performance of pitched‐blade and high‐efficiency impellers
Author(s) -
Myers Kevin J.,
Fasno Julian B.
Publication year - 1992
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.5450700326
Subject(s) - baffle , impeller , suspension (topology) , materials science , range (aeronautics) , mechanics , structural engineering , engineering , mechanical engineering , composite material , physics , mathematics , homotopy , pure mathematics
An innovative video technique indicates that the solids suspension performance of pitched‐blade impellers in flat‐bottomed tanks is improved by using a baffle off‐bottom clearance in the range of one‐fourth to one‐half of the baffle width (standard baffle width being one‐twelfth of the tank diameter). The solids suspension performance of high‐efficiency impellers is relatively unaffected by baffle off‐bottom clearances in the range of zero to one‐half of the baffle width. A baffle off‐bottom clearance equal to the baffle width is detrimental to the solids suspension performance of both pitched‐blade and high efficiency impellers.