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Effect of ethanol on the chemistry of formation of precursors of polyaromatic hydrocarbons in a fuel-rich ethylene flame at atmospheric pressure

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

The effect of the addition of ethanol (EtOH) to the initial combustible mixture on the concentration of various compounds, in particular, those preceding the formation of polyaromatic hydrocarbons in a fuel-rich (equivalence ratio of fuel ϕ = 1.7) flat premixed ethylene/oxygen/argon flame at atmospheric pressure was studied experimentally and by numerical modeling using a detailed mechanism of chemical reactions. Concentrations of various stable and labile species, including reactants, major combustion products, and intermediates in C2H4/O2/Ar and C2H4/EtOH/O2/Ar flames were measured along the height above the burner using molecular beam mass spectrometry. Experimental mole fraction profiles were compared with those calculated using the previously proposed mechanisms of chemical reactions. This mechanism was analyzed to determine the cause of the ethanol effect on the flame concentration of propargyl, the main precursor of polyaromatic hydrocarbons.

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Authors and Affiliations

  1. Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia

    I. E. Gerasimov, D. A. Knyazkov, S. A. Yakimov, T. A. Bolshova, A. G. Shmakov & O. P. Korobeinichev

  2. Novosibirsk State University, Novosibirsk, 630090, Russia

    I. E. Gerasimov

Authors
  1. I. E. Gerasimov
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  2. D. A. Knyazkov
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  3. S. A. Yakimov
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  4. T. A. Bolshova
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  5. A. G. Shmakov
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  6. O. P. Korobeinichev
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Correspondence to D. A. Knyazkov.

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Original Russian Text © I.E. Gerasimov, D.A. Knyazkov, S.A. Yakimov, T.A. Bolshova, A.G. Shmakov, O.P. Korobeinichev.

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Translated from Fizika Goreniya i Vzryva, Vol. 48, No. 6, pp. 3–20, November–December, 2012.

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Gerasimov, I.E., Knyazkov, D.A., Yakimov, S.A. et al. Effect of ethanol on the chemistry of formation of precursors of polyaromatic hydrocarbons in a fuel-rich ethylene flame at atmospheric pressure. Combust Explos Shock Waves 48, 661–676 (2012). https://doi.org/10.1134/S0010508212060019

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  • DOI: https://doi.org/10.1134/S0010508212060019

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