A lean methane premixed laminar flame doped by light components of diesel fuel - Part II : n propylcyclohexane ". - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Combustion and Flame Année : 2010

A lean methane premixed laminar flame doped by light components of diesel fuel - Part II : n propylcyclohexane ".

Résumé

For a better understanding of the chemistry involved during the combustion of components of diesel fuel, the structure of a laminar lean premixed methane flame doped with n-propylcyclohexane has been investigated. The inlet gases contained 7.1% (molar) methane, 36.8% oxygen, and 0.81% n-propylcyclohexane (C9H18), corresponding to an equivalence ratio of 0.68 and a C9H18/CH4 ratio of 11.4%. The flame has been stabilized on a burner at a pressure of 6.7 kPa (50 Torr) using argon as diluent, with a gas velocity at the burner of 49.2 cm/s at 333 K. Quantified species included the usual methane C0-C2 combustion products, but also 17 C3-C5 hydrocarbons, seven C1-C3 oxygenated compounds, and only four cyclic C6+ compounds, namely benzene, 1,3-cyclohexadiene, cyclohexene, and methylenecyclohexane. A new mechanism for the oxidation of n-propylcyclohexane has been proposed. It allows the proper simulation of profiles of most of the products measured in flames, as well as the satisfactory reproduction of experimental results obtained in a jet-stirred reactor. The main reaction pathways of consumption of n-propylcyclohexane have been derived from rate-of-production analysis.

Dates et versions

hal-00611136 , version 1 (25-07-2011)

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Citer

E. Pousse, R. Porter, P.A. Glaude, R. Fournet, F. Battin-Leclerc. A lean methane premixed laminar flame doped by light components of diesel fuel - Part II : n propylcyclohexane ".. Combustion and Flame, 2010, 157 (n°1), pp.75-90. ⟨10.1016/j.combustflame.2009.06.022⟩. ⟨hal-00611136⟩
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