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Extraction and absorption with a vibrating perforated plate
Author(s) -
Baird M. H. I.,
Vijayan S.,
Rao N. V. Rama,
Rohatgi A.
Publication year - 1989
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.5450670510
Subject(s) - mass transfer , mass transfer coefficient , sauter mean diameter , absorption (acoustics) , materials science , analytical chemistry (journal) , range (aeronautics) , phase (matter) , kerosene , optics , chemistry , composite material , chromatography , thermodynamics , physics , organic chemistry , nozzle
Mass transfer rates and hydrodynamic behaviour have been measured for liquid‐liquid and gas‐liquid dispersions formed at small perforations (0.3 to 1.5 mm diameter) in plates vibrating at frequencies of 10–100 Hz and amplitudes in the order of 0.1 mm. The light phase (liquid or gas) is fed beneath the plate which is provided with a skirt so that the light phase passes through the perforations to form discrete drops or bubbles. Sauter mean diameter was generally in the range 1–2 mm. Mass transfer efficiency for liquid‐liquid transfer (acetic acid from kerosene to water) was found to be in the order of 70% for a single plate; the effect of cell depth on efficiency was small, indicating that most of the mass transfer occurred near the plate. In the case of gas‐liquid mass transfer (oxygen uptake by water), the volumetric mass transfer coefficient was in the order of 0.1 s −1 , which compares well with conventional equipment.