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The role of gas bubbles and liquid slug lengths on mass transport in the Taylor flow through capillaries

✍ Scribed by Gorazd Berčič; Albin Pintar

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
782 KB
Volume
52
Category
Article
ISSN
0009-2509

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✦ Synopsis

Gas-liquid and liquid-solid mass transfers were studied in capillaries under Taylor flow regime. The influence of the capillary diameter, unit cell length and gas hold-up on measured kLa and ksa coefficients was correlated by simple correlation, which showed that in both cases the mass transport is mostly determined by the liquid slug length and velocity. The results demonstrated that the contribution of the mass transferred in the thin liquid film surrounding the gas bubble is not dominant. The conclusions agreed with the predictions made on the basis of a model developed by means of RTD measurements which were carried out in the same capillaries. The results obtained during catalytic hydrogenation of nitrite ions can also be explained in view of new findings. ,.~', 1997 Elsevier Science Ltd

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