(425b) Chemical Kinetic Modeling of Fischer-Tropsch Diesel Fuel Combustion

Fischer-Tropsch (FT) diesel fuel derived from biomass syngas is a potential renewable hydrocarbon fuel. The bulk physical chemical properties of FT diesel are similar to those of conventional petroleum derived diesel, so they can readily be used in diesel engine and gas turbine applications. However, the chemical composition of FT diesel is different than petroleum diesel, thereby affecting important combustion performance parameters (e.g., ignition and emissions formation). FT fuels typically contain higher concentration of singly methylated isoalkanes. This research project presents a detailed chemical kinetic mechanism for 2-methylalkanes ranging from C7 to C20. The model is validated against experimental data from a variety of fundamental combustion devices. This new model is used to show how the presence of a single methyl branch affects ignition, extinction, and species formation.