Investigations of mass transfer in annular gas-liquid flow in a microreactor

Paweł Sobieszuk , Karolina Napieralska


The paper presents an investigation of mass transfer in gas-liquid annular flow in a microreactor. The microreactor had a meandered shape with a square cross-section of the channel (292×292 μm, hydraulic diameter 292 μm) and 250 mm in length. The rate of CO2 absorption from the CO2/N2 mixture in NaOH (0.1 M, 0.2 M, 0.7 M, 1.0 M and 1.5 M) water solutions was measured. Two velocities of gas flow and two velocities of liquid flow were used. In two cases a fully developed annular flow at the beginning of the channel was observed, whilst in two cases annular flow was formed only in about 2/3 of the microchannel length. Based on the measurements of CO2 absorption rate, the values of volumetric liquid – side mass transfer coefficients with the chemical reaction were determined. Then physical values of coefficients were found. Obtained results were discussed and their values were compared with the values predicted by literature correlations.
Author Paweł Sobieszuk ZBIB
Paweł Sobieszuk,,
- Department of Biotechnology and Bioprocess Engineering
, Karolina Napieralska
Karolina Napieralska,,
Journal seriesChemical and Process Engineering , ISSN 0208-6425
Issue year2016
Pages 55-64
Publication size in sheets0.3
Keywords in Englishmass transfer, annular flow, microreactor
Languageen angielski
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Score (nominal)15
ScoreMinisterial score = 15.0, 28-11-2017, ArticleFromJournal
Ministerial score (2013-2016) = 15.0, 28-11-2017, ArticleFromJournal
Publication indicators WoS Impact Factor: 2016 = 0.971 (2) - 2016=0.925 (5)
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