METHOD OF PREPARING AROMATIC HYDROCARBONS AND HIGH-GRADE MOTOR FUEL Russian patent published in 2000 - IPC

FIELD: petrochemistry. SUBSTANCE: liquid pyrolysis products are subjected to hydrostabilization and separation into 35-62 C, 62-105 and 105-190 C fractions. Fraction 62-105 C individually or in admixture with benzene-toluene fraction resulting from reforming products evaporating within 62-110 C, the latter fraction being present in admixture up to 90 wt.%, is subjected successively to hydrodesulfurization, selective hydrocracking and isomerization, afterpurification and extraction to isolate benzene, toluene and high-octane nonaromatic concentrate. Fractions 35-62 C and 105-190 C are mixed with non- aromatic concentrate at optimal ratio to produce high- grade motor fuel. EFFECT: wider range and increased yield of the desired products, high-grade motor fuel containing aromatic compounds of lower than 45 wt.% including benzene of lower than 0.2 wt.%. 7 cl, 6 ex, 9 tbl