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Article Dans Une Revue Chemical Engineering Science Année : 2016

Visualization and characterization of gas-liquid mass transfer around a Taylor bubble right after the formation stage in microreactors

Résumé

The gas-liquid mass transfer occurring in Taylor flows right after the bubble formation stage were investigated in a flow-focusing microreactor. The colorimetric technique proposed by Dietrich el. al. (2013) was used for locally visualizing and characterizing the gas-liquid mass transfer. Thanks to this method, the liquid-side mass transfer coefficients k(L), were measured at the moment right after the bubble is detaching from the gas film near the cross-junction of the microreactor. Experiments were carried out for several flow conditions (95.7 < Re < 226.1, 0.0043 < Ca < 0.010, 0.4 < We < 2.3, Bo = 0.044) and bubble size (2.34 < L-b/l< 5.59). The results have demonstrated that the contribution of mass transfer right after the bubble formation stage is reasonably larger to those obtained at the bubble flowing-stage.
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hal-01886381 , version 1 (21-06-2019)

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Lixia Yang, Nicolas Dietrich, Karine Loubiere, Christophe Gourdon, Gilles Hébrard. Visualization and characterization of gas-liquid mass transfer around a Taylor bubble right after the formation stage in microreactors. Chemical Engineering Science, 2016, 143, pp.364-368. ⟨10.1016/j.ces.2016.01.013⟩. ⟨hal-01886381⟩
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