Formation Kinetics of Sulfur-Bearing Compounds in Combustion of Hydrocarbon Fuels in Air

Abstract

Using an extended kinetic model, formation kinetics of compounds of SOx and HSOy groups is analyzed in the case of combustion of hydrocarbon sulfur-bearing fuels mixed with air. It is shown that formation mechanisms of S-bearing compounds significantly depend on the air-to-fuel ratio and are closely related to formation kinetics of NO, NO2, CO, CO2, H, OH, and HO2. Both in rich and lean mixtures, there is a rather large period of time after ignition with significantly nonequilibrium variation of concentrations of N- and S-bearing components. Key words: combustion, sulfur-bearing compounds, heavy hydrocarbons, nitrogen-bearing components.