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On single bubble mass transfer in a volatile liquid

Colombet, Damien and Legendre, Dominique and Tuttlies, Ute S. and Cockx, Arnaud and Guiraud, Pascal and Nieken, Ulrich and Galinat, Sophie and Daniel, Claude On single bubble mass transfer in a volatile liquid. (2018) International Journal of Heat and Mass Transfer, 125. 1144-1155. ISSN 0017-9310

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Official URL: https://doi.org/10.1016/j.ijheatmasstransfer.2018.04.149

Abstract

We consider single bubble mass transfer of an non-condensible gas into a volatile liquid phase in indus- trial conditions, as observed for example in hydrocarbons liquid phase oxidation processes. Instantaneous bubble size, shape and velocity are measured using image processing with a particle tracking method. The mass transfer rate nitrogen into hot and pressurized liquid cyclohexane is deduced from the bubble volume decrease rate and is compared to literature correlations valid under isothermal conditions. Experiments are performed in a pressurized reactor for P = 20 bar, 30° ≤ T ≤ 150°C and bubble Reynolds number Re = O(10—100). The analysis of bubble rise dynamics shows that the gas-liquid system studied can be considered as a clean system. The mass transfer results are found to follow isothermal correlations predictions excepted for ambient temperature for which liquid evaporation in bubbles is shown to be coupled with mass transfer. This phenomena seems to be a consequence of having a high Lewis number.

Item Type:Article
HAL Id:hal-01886489
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Other partners > SOLVAY (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Universität Stuttgart (GERMANY)
Laboratory name:
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Deposited By: Dominique LEGENDRE
Deposited On:27 Mar 2019 13:51

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