METHOD FOR PRODUCING HIGH-OCTANE PETROL COMPONENT

摘要

FIELD: chemistry.;SUBSTANCE: method includes catalytic reforming of the fraction of 85-180°C, isolating the low-octane benzene-containing fraction from the reformate, hydroisomerizing the isolated fraction or its mixture with a straight-run hydrotreated fraction of 70-85°C and mixing the product with the rest of the reformate. Herewith a fraction containing mainly n-hexane, benzene and heptane is allocated within the temperature range of the starting boiling point of 65-70°C and the end boiling point of 100-105°C, hydroisomerization is carried out at a temperature of 150-350°C, at a pressure of 1.0-5.0 MPa, a volumetric feed rate of the raw material of 0.5-5.0 h ^-1 and a mole ratio of hydrogen/feedstock of 0.5-5.0 in the presence of a catalyst with subsequent separation from the product of low octane fraction, containing mainly n-heptane and methylhexane, and its recycle in a gas-raw mixture, and produced hydroisomerizate is blended with the remaining portion of the reformate with producing the target product, wherein the hydroisomerization catalyst contains, wt %: platinum and/or palladium 0.1-1.0, zeolite H-MOR or H-β - 5-50 or oxidesWO₃ andZrO₂ in the amount of 5-25 and 50-80, respectively, and aluminium oxide - the rest. The proposed method allows to produce a reformate with an octane number of 99-105 (IM) at an aromatic hydrocarbon content of 47-54 vol. %, benzene - 0.15-0.20 vol. %.;EFFECT: improving the characteristics of petrol.;3 tbl, 22 ex