METHOD OF REMOVING O-XYLENE CONCENTRATE, BENZENE, TOLUENE, AND HIGH-OCTANE GASOLINE COMPONENT WITH IMPROVED ENVIRONMENTAL CHARACTERISTICS FROM GASOLINE AND BENZENE-TOLUENE REFORMING CATALYSATE

FIELD: petrochemical processes. ^ SUBSTANCE: invention relates to chemical processing of petroleum products, notably to the process of producing o-xylene concentrate, high-octane gasoline component with improved environmental characteristics, commercial benzene and toluene from petroleum and gas-condensate feedstock. According to invention, gasoline reforming catalysate is subjected to fractionation on two rectification columns. Top product of the first column is benzene-toluene fraction with output ensuring potential production of sum of ethylbenzene and m- and p-xylenes in the top product equal to 10-45%. Side product is toluene-xylene fraction with output ensuring potential production of toluene in the side product equal to 5-30%. Bottom residue is fraction of aromatic hydrocarbons C9 and higher. Side product bleeding point in the column is selected such that temperature difference between column bottom and this point were within a range of 30-70°C. Benzene-toluene fraction from the first column top is fed into the second rectification column operated under excess pressure 2-5 kg/cm2. Top product of the second column is pre-benzene fraction with output ensuring potential production of non-aromatic C3-C6-hydrocarbons in the top product equal to 65-95%. Side product is benzene concentrate with output ensuring potential production of non-aromatic C7-C8-hydrocarbons in the side product equal to 30-65%. Bottom residue is toluene-xylene fraction. Side product bleeding point is selected such that temperature difference between side bleeding and column top were within a range of 35-75°C. Bottom product of the first column is combined with distillate and bottom residue of the second column thus producing high-octane gasoline component with improved environmental characteristics. Side distillates of the two columns are combined with benzene-toluene reforming catalysate and thus obtained product is consecutively subjected to hydrogenation, extraction with solvent refining agent to form extract, wherefrom commercial benzene, toluene, and o-xylene concentrate are recovered. ^ EFFECT: enlarged assortment of products, increased production of commercial benzene and toluene meeting State Standard requirements and also high-octane gasoline component with improved environmental characteristics. ^ 2 cl, 15 ex