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Taylor Bubble Study of the Influence of Fluid Dynamics on Yield and Selectivity in Fast Gas-Liquid Reactions
Authors:Felix Kexel  Alexandra von Kameke  Janina Tenhaus  Marko Hoffmann  Michael Schlüter
Affiliation:Hamburg University of Technology, Institute of Multiphase Flows, ißendorfer Straße 38, 21073 Hamburg, Germany
Abstract:A consecutive competitive gas-liquid reaction is investigated using a Taylor bubble setup regarding the influence of fluid mixing in the bubble wake on yield and selectivity. The concentration fields behind a Taylor bubble are visualized and measured quantitatively with a novel time-resolved absorption imaging technique based on Beer Lamberts law and an integral selectivity is derived. In addition, the calculation of the local selectivity, often used in numerical approaches, is discussed and the existing experimental limits for its derivation are pointed out. Finally, an increase in selectivity of a competitive consecutive reaction for enhanced mixing is experimentally confirmed.
Keywords:Gas-liquid reaction  Mass transfer phenomena  Reactive bubbly flows  Selectivity  Taylor bubble
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