III International Conference

PP-III-49IMPROVEMENT OF ECOLOGICAL PROPERTIES OF REFORMING GASOLINERustamov M.N., Abad-zadeh Kh.I., Mukhtarova G.S., Mamedov Z.Sh.,Efendiyeva N.Kh.Institute of Petrochemical Processes after Yu.H.Mammedaliyev of National Academy ofSciences of Azerbaijan, Baku, AzerbaijanE-mail: gulermuxtarova@yahoo.comThe new standards applied in USA and several countries of Europe (Eurosuper -3, 4, 5) forengine fuels in relation with strengthening of ecological requirements consider an abruptalteration of component content, as well as restrictions of content of aromatic hydrocarbons(especially benzene), olefins, sulfur, absence of tetraethyl of lead. By these requirements thecontent of sulfur in the gasoline will be decreased to 10-30 ppm, the benzene content to 0-1 % ob.The influence of reforming gasoline (which is the main component in general gasolinefund) on the quality of commercial gasoline is not unambiguous: the octane number increases,but the deterioration of ecological indicators due to higher content of benzene and aromatichydrocarbons take place.Analysis of individual hydrocarbon content of the raw material of reforming process(fr. 85-180 °C) separated by rectification on lab installation indicates that the content ofbenzene in it is 0 %, the content of benzene forming hydrocarbons is up to 0.669 % mass.The gasoline fraction 85-180 °C was subjected to catalytic reforming at temperatures of475, 490, 520 °C, at pressure 8 atm., the volume inlet of raw material 1.0 h -1 and quantity ofhydric gas 1000 l per liter of raw material, in presence of industrial catalyst R-132 at modelplant with loading of catalyst 150 cm 3 .The obtained results indicate that with increasing of temperature from 475 up to 520 °Cat the constancy of the other parameters of the process the output of aromatic hydrocarbonsand benzene increases from 68.5 up to 87 % and from 0.6 up to 2.6 %, respectively, while theoctane number increases from 86.5 up to 96 by engine method in pure form.The content of benzene at mild regime (t = 475 °C) is 0.6 % mass. against 6.7 % obtainedfor analogical industrial fraction.In reformates the aromatic hydrocarbons are concentrated in higher-boiling fractions. Thefraction boiling up to 100 °C in reforming gasoline has an octane number 71-73 in spite ofrequired 77-78 p. by m.m.562