III International Conference

PP-III-49With aim to achieve the homogenous distribution of octane number by fractions, todecrease content of aromatic hydrocarbons in reforming gasoline the separated light gasolinefraction with s.b. -85 °C, is suggested to be used as a component into reformate after addingthe octane increasing less toxic additives. The octane number of fraction with s.b.-85 °C, thus,increases from 69.5 up to 79 p. by engine method.So, on the basis of reformate and light gasoline fraction with s.b.-85°C for decrease of thecontent of general aromatics, benzene, as well as for increase of distribution uniformity ofoctane number by fractions in commercial gasoline A-92 we suggest:• clear fractioning of raw material reforming with output of light fraction (fr. with s.b.-85 °C) containing benzene-forming hydrocarbons;• the conduction of reforming at a lower temperature (mild regime) in order to preventcyclodehydrogenation of paraffin and demethylation of high-molecular aromatichydrocarbons leading to formation of benzene;• usage of light gasoline fraction (fr. s.b. -85 °C) after adding the octane increasing additiveas a component into the reformate.The obtained gasoline meets the international standards.563