Effects of vessel baffling on the drawdown of floating solids

Karcz, Joanna and Mackiewicz, Beata Effects of vessel baffling on the drawdown of floating solids Chemical Papers, Vol.63, No. 2, 2009, 164-171

Document type: Článok z časopisu / Journal Article
Collection: Chemical papers  

Author(s) Karcz, Joanna
Mackiewicz, Beata
Title Effects of vessel baffling on the drawdown of floating solids
Journal name Chemical Papers
Publication date 2009
Year available 2009
Volume number 63
Issue number 2
ISSN 0366-6352
Start page 164
End page 171
Place of publication Poland
Publisher Versita
Collection year 2009
Language english
Subject 290000 Engineering and Technology
290600 Chemical Engineering
Abstract/Summary The effects of baffling of an agitated vessel on the production of floating particles suspension are presented in this paper. Critical agitator speed, needed for particles dispersion in a liquid agitated in a vessel of the inner diameter of 0.295 m, was determined. The just drawdown agitator speeds were defined analogously to the Zwietering criterion. Specific agitation energy was calculated from the power consumption experimental data obtained by means of the strain gauge method. The experiments were carried out for twelve configurations of the baffles differing in number, length and their arrangement in the vessels. The following high-speed impellers were used: up- and downpumping six blade pitched blade turbines, Rushton turbine, and propeller. The impeller was located in the vessel in the height equal to two-thirds or one-third of the vessel diameter from the bottom of the vessel. The results were described in the form of a dimensionless equation.
 
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