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An Efficiency of the Liquid Homogenization in Agitated Vessels Equipped with Off-Centred Impeller
Szoplik, J. and Karcz, J. An Efficiency of the Liquid Homogenization in Agitated Vessels Equipped with Off-Centred Impeller Chemical Papers, Vol.59, No. 6a, 2005, 373-379
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Document type:
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Článok z časopisu / Journal Article |
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Collection:
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Chemical papers
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| Attached Files |
| Name |
Description |
MIMEType |
Size |
Downloads |
n596aa373.pdf
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596aa373.pdf |
application/pdf |
260.57KB |
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| Author(s) |
Szoplik, J.
Karcz, J.
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| Title |
An Efficiency of the Liquid Homogenization in Agitated Vessels Equipped with Off-Centred Impeller
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| Journal name |
Chemical Papers
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| Publication date |
2005
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| Year available |
2005
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| Volume number |
59
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| Issue number |
6a
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| ISSN |
0366-6352
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| Start page |
373
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| End page |
379
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| Place of publication |
Poland
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| Publisher |
Versita
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| Collection year |
2005
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| Language |
english
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| Subject |
290000 Engineering and Technology
290600 Chemical Engineering
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| Abstract/Summary |
Efficiency of the liquid homogenization in agitated vessels (with inner diameter D) equipped with off-centred impeller is analyzed. Experimental studies of the mixing time were carried out in a 0.270 m3 vessel using unsteady-state thermal method. Eccentrically located propeller and pitched blade turbines were used for agitation of Newtonian liquid (aqueous solution of molasses) within the turbulent regime of the fluid flow. Assuming constant value of the specific mixing energy, ε, similar values of the mixing times, tm, were observed for propeller and pitched blade turbine with three blades. Mixing time was positively influenced by the increase of impeller diameter and the number of impeller blades. Assuming constant value of specific energy, ε, the lowest dimensionless mixing time, Θ, corresponded to the eccentric pitched three-blade turbine with diameter d = 0.5 D. Taking into account different criteria proposed in literature, eccentric propeller (e/R = 0.57) can be recommended for liquid homogenization with the most efficiency in the unbaffled agitated vessel, within the range of the performed measurements.
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