Detailed Reaction Kinetics of CO2 Splitting in High-Enthalpy Plasma Flows

ORAL

Abstract

Plasma-based CO2 conversion has proven to be a promising candidate for greenhouse gas utilization. At the Institute of Space Systems (IRS), the inductively coupled plasma generator IPG4 is investigated for this purpose. IPG4 is a high-power (160kW) plasma source operating at reduced pressure (2900Pa). Unraveling the carbon dioxide conversion process in such a high-enthalpy plasma requires the identification and understanding of dominant reaction pathways. In this work, an extensive CO2 chemistry set, built into the global plasma model globalKin (M. Kushner), is applied to analyze the reaction kinetics in IPG4. The chemistry set includes vibrational energy transfer as well as the dissociation of carbon monoxide into carbon and oxygen. Intrusively measured specific energy values allow for a radially discretized analysis of reaction kinetics in the plasma jet. The contribution of single reactions to dissociation mechanisms and gas heating is studied.

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Publication: Burghaus, Hendrik, et al. "Influence of specific energy inhomogeneity on the CO2 splitting performance in a high-power plasma jet." Vacuum 217 (2023): 112500.
Burghaus, Hendrik, et al. "Aerothermodynamic characterization of inductively generated carbon dioxide plasma by laser absorption spectroscopy." Journal of Thermophysics and Heat Transfer 38.1 (2024): 98-108.

Presenters

  • Hendrik Burghaus

    Institute of Space Systems, University of Stuttgart, Institute of Space Systems, University of Stuttgart, Germany

Authors

  • Hendrik Burghaus

    Institute of Space Systems, University of Stuttgart, Institute of Space Systems, University of Stuttgart, Germany

  • Sebastian Wilczek

    TH Georg Agricola University, Bochum, Germany, TH Georg Agricola University, Bochum, Germany, enaDyne GmbH, Leipzig, Germany

  • Paul E Hofmeyer

    Institute of Space Systems, University of Stuttgart, Germany

  • Thomas Mussenbrock

    Ruhr University, Bochum, Germany, Chair of Applied Electrodynamics and Plasma Technology, Ruhr University Bochum, Bochum, Germany

  • Georg Herdrich

    Institute of Space Systems, University of Stuttgart, Germany