A procedure for calculating octane numbers of commercial gasolines with due regard for the intensity of interaction between molecules of blend components, and the mechanism of interaction of interaction of anti-knock additives with hydrocarbons is elaborated. Based on the models developed, a computer program is created for optimization of the process producing high-octane gasoline. The program allows quick and precise determination of the optimum ratio of components, which ensures production of commercial gasolines that meet all the requirements of regulatory documents.

The simulation system of oil physical and chemical properties has been developed on the basis of the analysis of various design techniques of physical and chemical properties of oil fraction hydro-carbons. Mathematical models involved into simulation system describe sufficiently functional dependences of boiling temperature, density and molar weight of fraction on operating conditions.