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Formation of drops at narrow slots in a centrifrugal liquid - liquid contactor

Lookup NU author(s): Professor Jonathan LeeORCiD, Dr Albert Wraith

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Abstract

In experiments on the dispersion of organic phases into aqueous phases, drops were generated continuously at narrow slots of width 12 μm ≤ w ≤ 125 μm mounted peripherally and normal to the radius in a 'Hi-Gee' centrifugal contactor. The drops formed at an array of sources attributed to the Rayleigh-Taylor instability distributed an average distance λ ≈ 2π √2σ/ δpg apart where σ is the interfacial tension of the phases, δp their density difference and g the applied centrifugal acceleration. Measured Sauter mean drop diameters were in the range 0.48 to 1.00 mm. The average drop size, d, was given by d ≈ d* 3√σ/δpg where d* = 0.1538 ±0.0016 m1/3 is a measured capillary factor. Drop size was marginally affected by inertial forces at the highest flow rates.

Publication metadata

Author(s): Lee JGM; Wraith AE; Wadley R

Publication type: Article

Publication status: Published

Journal: Canadian Journal of Chemical Engineering

Year: 2000

Volume: 78

Issue: 5

Pages: 876-883

ISSN (print): 0008-4034

ISSN (electronic): 1939-019X

Publisher: Wiley-Blackwell Publishing Ltd.

URL: http://dx.doi.org/10.1002/cjce.5450780504

DOI: 10.1002/cjce.5450780504

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