Measurement of local velocities of drops in a liquid—liquid extraction vibrating plate column

The motion of single-solvent drops in water in the countercurrent Karr column with vibrating plates was examined by means of multiple photography. Profiles of mean residence times along the height of the stage were evaluated from repeated experiments. Mean residence times in the stage were compared...

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Bibliographic Details
Published inChemical engineering science Vol. 45; no. 12; pp. 3563 - 3570
Main Authors VOHRADSKY, J, SOVOVA, H
Format Journal Article
LanguageEnglish
Published Oxford Elsevier Ltd 1990
Elsevier
Subjects
Applied sciences
Chemical engineering
Exact sciences and technology
Liquid-liquid extraction
Residence time
Liquid liquid extraction
Residence time distribution
Hydrodynamics
Experimental study
Velocity
Vibrating plate column
Drop
Plate column
Countercurrent
Flow(fluid)
Measurement method
Photographic technique
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Summary:The motion of single-solvent drops in water in the countercurrent Karr column with vibrating plates was examined by means of multiple photography. Profiles of mean residence times along the height of the stage were evaluated from repeated experiments. Mean residence times in the stage were compared with the residence times of drops in the absence of plates. The time delay due to vibrating plates is a function of the intensity of vibration and the velocity of the continuous phase. The ratio of the characteristic velocity to the terminal velocity is lower than 1 and diminishes with increasing intensity of vibration, velocity of the continuous phase and drop size.
ISSN:0009-2509
1873-4405
DOI:10.1016/0009-2509(90)87159-P