Measurements of toluene–water dispersions hold-up using a non-invasive ultrasonic technique

Ultrasound techniques for the characterization of liquid–liquid dispersions have previously shown their value and promise, but still require refinement and careful, preferably non-invasive, implementation. Their combination with drop size distribution measurement techniques is also an important area...

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Bibliographic Details
Published in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2006-05, Vol.118 (1), p.47-54
Main Authors: Ribeiro, M.M.M., Gonçalves, C., Regueiras, P.F., Guimarães, M.M.L., Cruz Pinto, J.J.C.
Format: Article
Language:English
Subjects:
Applied sciences
Chemical engineering
Exact sciences and technology
Hydrodynamics
Hydrodynamics of contact apparatus
Liquid–liquid systems
Mixing
Ultrasounds
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Summary:Ultrasound techniques for the characterization of liquid–liquid dispersions have previously shown their value and promise, but still require refinement and careful, preferably non-invasive, implementation. Their combination with drop size distribution measurement techniques is also an important area for further development. A new non-invasive implementation has been developed, studied and evaluated in detail, which leads to accurate hold-up fraction measurements (to within −0.0123 units), surpassing that of most previous techniques. The largest error incurred by the effect of the propagation through the vessel wall glass has been shown to be negligible, the same applying to the effect of the propagation across the agitator shaft. Actual experimental dispersed phase hold-up fractions of up to 40% were tested and successfully correlated, in addition to 100% organic phase.
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2006.01.013