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Flame Structure at Elevated Pressure Values and Reduced Reaction Mechanisms for the Combustion of CH 4 /H 2 Mixtures

Author

Listed:
  • Ilya E. Gerasimov

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia)

  • Tatyana A. Bolshova

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia)

  • Ksenia N. Osipova

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
    Department of Physics, Novosibirsk State University, Novosibirsk 630090, Russia)

  • Artëm M. Dmitriev

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
    Department of Physics, Novosibirsk State University, Novosibirsk 630090, Russia)

  • Denis A. Knyazkov

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
    Department of Physics, Novosibirsk State University, Novosibirsk 630090, Russia)

  • Andrey G. Shmakov

    (Voevodsky Institute of Chemical Kinetics and Combustion SB RAS, Novosibirsk 630090, Russia
    Department of Physics, Novosibirsk State University, Novosibirsk 630090, Russia)

Abstract

Understanding and controlling the combustion of clean and efficient fuel blends, like methane + hydrogen, is essential for optimizing energy production processes and minimizing environmental impacts. To extend the available experimental database on CH 4 + H 2 flame speciation, this paper reports novel measurement data on the chemical structure of laminar premixed burner-stabilized CH 4 /H 2 /O 2 /Ar flames. The experiments cover various equivalence ratios (φ = 0.8 and φ = 1.2), hydrogen content amounts in the CH 4 /H 2 blend (X H2 = 25%, 50% and 75%), and different pressures (1, 3 and 5 atm). The flame-sampling molecular-beam mass spectrometry (MBMS) technique was used to detect reactants, major products, and several combustion intermediates, including major flame radicals. Starting with the detailed model AramcoMech 2.0, two reduced kinetic mechanisms with different levels of detail for the combustion of CH 4 /H 2 blends are reported: RMech1 (30 species and 70 reactions) and RMech2 (21 species and 31 reactions). Validated against the literature data for laminar burning velocity and ignition delays, these mechanisms were demonstrated to reasonably predict the effect of pressure and hydrogen content in the mixture on the peak mole fractions of intermediates and adequately describe the new data for the structure of fuel-lean flames, which are relevant to gas turbine conditions.

Suggested Citation

  • Ilya E. Gerasimov & Tatyana A. Bolshova & Ksenia N. Osipova & Artëm M. Dmitriev & Denis A. Knyazkov & Andrey G. Shmakov, 2023. "Flame Structure at Elevated Pressure Values and Reduced Reaction Mechanisms for the Combustion of CH 4 /H 2 Mixtures," Energies, MDPI, vol. 16(22), pages 1-30, November.
    • Handle: RePEc:gam:jeners:v:16:y:2023:i:22:p:7489-:d:1276266
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    References listed on IDEAS

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    1. Taamallah, S. & Vogiatzaki, K. & Alzahrani, F.M. & Mokheimer, E.M.A. & Habib, M.A. & Ghoniem, A.F., 2015. "Fuel flexibility, stability and emissions in premixed hydrogen-rich gas turbine combustion: Technology, fundamentals, and numerical simulations," Applied Energy, Elsevier, vol. 154(C), pages 1020-1047.
    2. Simon Drost & Sven Eckart & Chunkan Yu & Robert Schießl & Hartmut Krause & Ulrich Maas, 2023. "Numerical and Experimental Investigations of CH 4 /H 2 Mixtures: Ignition Delay Times, Laminar Burning Velocity and Extinction Limits," Energies, MDPI, vol. 16(6), pages 1-17, March.
    3. Iren A. Makaryan & Igor V. Sedov & Eugene A. Salgansky & Artem V. Arutyunov & Vladimir S. Arutyunov, 2022. "A Comprehensive Review on the Prospects of Using Hydrogen–Methane Blends: Challenges and Opportunities," Energies, MDPI, vol. 15(6), pages 1-27, March.
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