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Experimental Study of a Gas–Liquid Flow in Vacuum Air-Lift Column Using an Optical Bi-Probe

Laboratory of Fluid Mechanics and Acoustics (LMFA), National Institute of Applied Science (INSA), Lyon, 20 Av. A. Einstein, 69621 Villeurbanne CEDEX, France
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Current address: 20 Avenue Albert Einstein, 69621 Villeurbanne, France.
Fluids 2019, 4(2), 80; https://doi.org/10.3390/fluids4020080
Received: 24 February 2019 / Revised: 4 April 2019 / Accepted: 10 April 2019 / Published: 23 April 2019
(This article belongs to the Special Issue Coupled Flow and Heat or Mass Transport)
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Abstract

The vacuum airlift column process was patented in 2007 and is under development. The experimental study of its hydrodynamics is one of the axes explored to optimize its design and operation. The object of the study presented in this paper is to determine the functions of phase indicator (gas holdup, superficial gas velocity and bubble size) of the gas–liquid flow. The experimental analysis is carried out using a two-phase instrumentation consisting of an optical fiber bi-probe. The use of experimental techniques has made it possible to better understand the hydrodynamics of a two-phase flow. The optical bi-probe placed between two column flanges made it possible to have a complete mapping of the flow of the dispersed phase. The use of a mass flow meter and an ultrasonic flowmeter, in different flow configurations, provided data on the column operation. View Full-Text
Keywords: vacuum airlift; bubble column; optical bi-probe; gas holdup; bubble size; velocity vacuum airlift; bubble column; optical bi-probe; gas holdup; bubble size; velocity
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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MDPI and ACS Style

Hassan Barkai, A.; El Hajem, M.; Lacassagne, T.; Champagne, J.-Y. Experimental Study of a Gas–Liquid Flow in Vacuum Air-Lift Column Using an Optical Bi-Probe. Fluids 2019, 4, 80.

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