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Fizika Goreniya i Vzryva, 2012 Volume 48, Issue 6, Pages 3–20 (Mi fgv1049)

This article is cited in 4 papers

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

I. E. Gerasimovab, D. A. Knyaz'kova, S. A. Yakimova, T. A. Bolshovaa, A. G. Shmakova, O. P. Korobeinicheva

a Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Novosibirsk State University, Novosibirsk, 630090, Russia

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 $\phi$ = 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 C$_2$H$_4$/O$_2$/Ar and C$_2$H$_4$/EtOH/O$_2$/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.

Keywords: ethylene flame, ethanol, molecular beam mass spectrometry, flame structure, formation of soot precursors.

UDC: 536.461, 536.462

Received: 20.04.2011
Accepted: 23.09.2011


 English version:
Combustion, Explosion and Shock Waves, 2012, 48:6, 661–676

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