Methane–Carbon Oxide Ignition

Experimental studies and kinetic analysis of ignition of stoichiometric mixtures of methane with carbon monoxide in air at temperatures below 1000 K and pressures of 1–15 atm reveal the complex nature of the effect of mixture composition, temperature, and pressure on ignition delay. For mixtures wit...

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Bibliographic Details
Published in:Combustion, explosion, and shock waves explosion, and shock waves, 2024-06, Vol.60 (3), p.283-293
Main Authors: Troshin, K. Ya, Belyaev, A. A., Arutyunov, A. V., Arutyunov, V. S.
Format: Article
Language:English
Subjects:
Carbon monoxide
Classical and Continuum Physics
Classical Mechanics
Coal mines
Composition effects
Control
Dynamical Systems
Engineering
Exothermic reactions
Heat balance
Ignition
Low temperature
Methane
Mixtures
Oxidation
Physical Chemistry
Physics
Physics and Astronomy
Pressure effects
Process parameters
Synthesis gas
Vibration
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Summary:Experimental studies and kinetic analysis of ignition of stoichiometric mixtures of methane with carbon monoxide in air at temperatures below 1000 K and pressures of 1–15 atm reveal the complex nature of the effect of mixture composition, temperature, and pressure on ignition delay. For mixtures with different carbon monoxide contents, pressure has different effects on ignition and the values of the effective ignition delay energy of these mixtures are very different, indicating serious changes in the process mechanism when changing all the above-mentioned parameters. The most obvious changes are associated with the effect of these parameters on the formation reactions and subsequent kinetics of HO  hydroperoxide radicals, including the role of their interaction with carbon monoxide. It is also necessary to account for the contribution of highly exothermic processes involving carbon monoxide to the heat balance of the ignition process of such mixtures. Information on the effect of the main parameters on the ignition of mixtures of methane with carbon monoxide at low temperatures is necessary to ensure the safe technological production and use of synthesis gas and hydrogen, coal mine operation, and the optimization of detailed kinetic mechanisms of light hydrocarbon oxidation.
ISSN:0010-5082
1573-8345
DOI:10.1134/S001050822403002X