Premium
Homogenization of liquids in tanks stirred by multiple impellers
Author(s) -
Jahoda Milan,
Machoň Václav
Publication year - 1994
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270170205
Subject(s) - impeller , homogenization (climate) , mechanics , mixing (physics) , materials science , agitator , tracer , volumetric flow rate , liquid flow , chemistry , thermodynamics , physics , biodiversity , ecology , quantum mechanics , nuclear physics , biology
The process of homogenization of liquids in a tall vessel equipped with a multiple impeller was studied. Up to four standard Rushton turbines and/or six pitched‐blade turbines were used. The mixing time in the system was measured by the conductivity method. A continuous time history of the tracer concentration at several points in the system was recorded. The data were interpreted by means of an adapted cell model of the flow within the stirred vessel with several impellers based on the assumption of well mixed cells and intercellular flow of liquid. The liquid transfer flow rate between the cells, as a parameter of the model, was calculated from experimental data. A good agreement between the time dependence of concentration obtained experimentally and that calculated from theory was obtained. A direct relationship between the flow numbers between cells and those of impellers was established.