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Liquid/Liquid Slug Flow Capillary Microreactor
Author(s) -
Ufer A.,
Mendorf M.,
Ghaini A.,
Agar D. W.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201000334
Subject(s) - microreactor , microscale chemistry , slug flow , mass transfer , capillary action , wetting , microfluidics , chemistry , separator (oil production) , materials science , chemical engineering , two phase flow , catalysis , chromatography , flow (mathematics) , nanotechnology , mechanics , thermodynamics , organic chemistry , composite material , engineering , mathematics education , mathematics , physics
The liquid‐liquid slug flow capillary microreactor offers an excellent mass transfer performance for extraction and biphasic reactions. In combination with a simple phase separator based on wettability discrimination between the two liquids, it provides a powerful tool for process intensification and microscale processing. By new visualization techniques, the interfacial surface and slug vortex structures dictating inter‐ and intraphase mass transfer have been revealed to be more complex than previously assumed. Suspending fine catalyst particles in one phase of a two‐phase slug flow is an effective technique for using heterogeneous catalysts in microreactors, owing to the very good mass transfer characteristics and because catalyst recovery becomes simply a matter of separating the catalyst carrier phase from the reaction medium. To exploit the performance attributes of capillary microreactors at higher throughputs, distributor and control strategies for parallelisation were developed to provide a flow distribution uniform to within 1 % or less.