Study of Quasi-Global Schemes for Hydrocarbon Combustion

Abstract The paper presents experimental results of the study, in a “well stirred reactor”, of the combustion of hydrocarbons with air. Particular care had been taken in the realization of a good “stirring”, or homogenization, of the combustor, and in the minimization of heat losses. The evolution of the CO, CO2, H2 species during the combustion of CH4, C3H8, CH4 + H2 mixture, benzene and isooctane has been measured as a function of residence time for reaction extents from 0.50 to 0.95, according to the cases, and for equivalence ratio from 0.65 to 1.20. These experimental results have been exploited with a view to leading to a “quasi global” schematization of the complex chemical processes of combustion, for which the numerical values of the corresponding constants have been obtained; a computer programme has been deducted from that scheme, which yielded a rather satisfactory agreement with experimental results. Although relatively simplified, this schematization can already be used with reasonable safet...

[1]  M. Charpenel Mesures instantanées par pyrométrie infrarouge de températures de gaz de combustion. Application à la turbulence thermique , 1979 .

[2]  W. C. Gardiner,et al.  An evaluation of methane combustion mechanisms , 1977 .

[3]  J. Boris,et al.  A numerical technique for solving stiff ordinary differential equations associated with the chemical kinetics of reactive-flow problems , 1977 .

[4]  C. M. Lund,et al.  A numerical model of chemical kinetics of combustion in a turbulent flow reactor , 1977 .

[5]  P. Malte,et al.  Analytical and experimental study of turbulent combustion in a Longwell jet-stirred reactor , 1977 .

[6]  F. Dryer,et al.  Combustion of hydrocarbons in an adiabatic flow reactor: some considerations and overall correlations of reaction rate , 1975 .

[7]  D. D. Drysdale,et al.  An evaluation of the rate data for the reaction CO + OH → CO2 + H , 1974 .

[8]  J. P. Longwell,et al.  HIGH-TEMPERATURE REACTION RATES IN HYDRO-CARBON COMBUSTION , 1955 .

[9]  R. B. Edelman,et al.  Laminar and turbulent gas dynamics in combustors—current status , 1978 .

[10]  Jozef Peeters,et al.  Reaction mechanisms and rate constants ofelementary steps in methane-oxygen flames , 1973 .

[11]  Frederick L. Dryer,et al.  High-temperature oxidation of CO and CH4 , 1973 .

[12]  D. D. Drysdale,et al.  Evaluated kinetic data for high temperature reactions , 1972 .

[13]  H. Hottel,et al.  The combustion of methane in a jet-mixed reactor , 1969 .

[14]  D. R. Stull,et al.  The chemical thermodynamics of organic compounds , 1969 .

[15]  R. Shinnar,et al.  The effect of imperfect mixing on stirred combustion reactors , 1969 .

[16]  H. C. Hottel,et al.  Kinetic studies in stirred reactors: Combustion of carbon monoxide and propane , 1965 .

[17]  Rutherford Aris,et al.  Introduction to the Analysis of Chemical Reactors , 1965 .