Characterization of Dieseline with the Advanced Distillation Curve Method: Hydrocarbon Classification and Enthalpy of Combustion
Thomas J. Bruno, Jessica L. Burger, Raina V. Gough
The use of supercritical fuel blends with low cetane numbers and high volatility, such as natural gas and gasoline with diesel fuel, may aid in efforts to reduce nitrogen oxides (NOx) and particulate matter emission from internal combustion engines. In this work we measured blends of 10, 20, 30, 50, 70, 80, and 90 % (vol/vol) gasoline in diesel fuel in the composition channel of the advanced distillation curve (ADC) method to determine the hydrocarbon classifications in the various volume fractions. This allows us to track the hydrocarbon families throughout the distillation process and, most importantly, observe changes in the aromatic content of the distillate cuts. In addition, we have shown how the composition channel allows the combination of thermochemical data with the temperature data of the distillation curve reported earlier. This was done by calculating a composite enthalpy of combustion based on the enthalpy of combustion of the individual components of a distillate fraction.