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Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time

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Reactive Bubbly Flows

Part of the book series: Fluid Mechanics and Its Applications ((FMIA,volume 128))

Abstract

For investigations of concentration profiles around bubbles in millichannels as Taylor flow and in bubble columns two in situ real-time process analysis systems were developed. The first system uses laser Raman spectroscopy combined with real-time digital holography. The Raman part of the system is based on a custom pulsed high-energy laser. With this process analysis system, it is possible to measure concentrations of many chemical compounds selectively, with a spatial resolution in the micrometer range during a 10 µs laser pulse. Due to the two combined principles, the determination of the position of a measured local concentration relative to the gas bubble is possible and has been demonstrated. The second real-time process analysis system is especially suited for colored chemical reactions. The system is based on real-time UV/VIS 2D tomography such that with time the third dimension of a 3D concentration profile in the bubble wake can be determined. It consists of fast line sensors illuminated by a laser light sheet. This light sheet originates from a laser spot moving around one third of the bubble column repeatedly. This system is applicable to freely ascending single bubbles as well as bubbly flows in bubble columns.

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Acknowledgements

This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—priority program SPP 1740 “Reactive Bubbly Flows” (237189010) for the project RI 2512/1-1, SI 587/11-1 and SI 587/11-2.

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Authors and Affiliations

  1. Institute for Parallel and Distributed Systems, University of Stuttgart, Universitätsstraße 38, 70569, Stuttgart, Germany

    Jajnabalkya Guhathakurta, Daniel Grottke & Sven Simon

  2. Karlsruhe Institute of Technology, Institute for Micro Process Engineering, Hermann-von-Helmholtz-Platz 1, 76344, Eggenstein-Leopoldshafen, Germany

    Daniela Schurr, Günter Rinke, Manfred Kraut & Roland Dittmeyer

Authors
  1. Jajnabalkya Guhathakurta
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  2. Daniela Schurr
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  3. Günter Rinke
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  5. Manfred Kraut
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  6. Roland Dittmeyer
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  7. Sven Simon
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Corresponding author

Correspondence to Jajnabalkya Guhathakurta .

Editor information

Editors and Affiliations

  1. Institute of Multiphase Flows, Hamburg University of Technology, Hamburg, Germany

    Michael Schlüter

  2. Mathematical Modeling and Analysis, Technical University of Darmstadt, Darmstadt, Germany

    Dieter Bothe

  3. Institute for Inorganic Chemistry, RWTH Aachen University, Aachen, Germany

    Sonja Herres-Pawlis

  4. Institute of Chemical Process Engineering, University of Stuttgart, Stuttgart, Germany

    Ulrich Nieken

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Guhathakurta, J. et al. (2021). Investigation of the Influence of Transport Processes on Chemical Reactions in Bubbly Flows Using Space-Resolved In Situ Analytics and Simultaneous Characterization of Bubble Dynamics in Real-Time. In: Schlüter, M., Bothe, D., Herres-Pawlis, S., Nieken, U. (eds) Reactive Bubbly Flows. Fluid Mechanics and Its Applications, vol 128. Springer, Cham. https://doi.org/10.1007/978-3-030-72361-3_9

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  • DOI: https://doi.org/10.1007/978-3-030-72361-3_9

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