FIELD: gasoline processing.
SUBSTANCE: invention relates to a method for processing gasoline fractions. The method includes fractionation of gasoline fractions nk-180°S in the column for separating heavy fractions into fractions 170-kk, 140-170°S, nk-140°S, after which fraction nk-140°S in the form of vapour sequentially heats the bottom of the dehexanization column and the bottom of the deisohexanization column through reboilers. After heat transfer in the vapour-liquid state, the fraction enters the dehexanization column as raw material, where it is divided into fractions 85-140°S and nk-85°S, fraction nk-85°S then enters the deisohexanization column, where it is separated into nk-62°S and fraction 62-85°S.
EFFECT: reduction in the energy intensity of the rectification process by 50%.
1 cl, 1 dwg, 3 tbl
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