A process to increase the detonation resistance of motor gasoline using a component obtained during needle coke production

The paper discusses the effect of polymer addition, which improves needle coke morphology, on the composition and properties of fuel distillate fractions of the delayed coking process. A significant change was found in the hydrocarbon composition and physicochemical properties of the cracked gasoline fraction along with preserved composition of the light and heavy gasoil fractions, as well as a significant change in the material balance of the process. When mixing 35 wt% of the gasoline fraction of the coking distillates made using the modified feedstock with gasoline which octane number is 80.0, we observe an increase in the detonation resistance of the fuel by 9.7 points, while addition of the gasoline fraction from the standard coking gasoline leads to a decrease in this indicator by 10.2 points. The obtained results indicate a significant contribution of the 10 wt% polymer additive to the quality characteristics not only of the carbon material, but also of the coking gasoline fraction. The change in the composition and qualitative characteristics of the gasoline fraction has a significant impact on the marketing chain of this fraction as a component of motor fuel. Due to predominance of the high-octane monoaromatic compounds, this fraction has a higher detonation resistance than the same fraction obtained by coking the non-modified feedstock.