FIELD: chemistry.
SUBSTANCE: invention relates to a process for separating a hydrotreated effluent from a hydrocracking reactor comprising separating a hydrotreated effluent into an overhead stream, a kerosene stream having an initial boiling point of 138 °C (280 °F) to 216 °C (420 °F), and a diesel stream having an initial boiling point above 193 °C (380 °F); separating said head stream into a medium naphtha stream and a heavy naphtha stream having an initial boiling point of 121 °C (250 °F) to 138 °C (280 °F), and blending said heavy naphtha stream with said diesel stream to form a blended diesel stream. Invention also relates to an apparatus for recovering hydrocracked products, comprising a distillation column for separating a hydrotreated stream; an overhead line from the overhead portion of said distillation column; a kerosene line from a kerosene outlet in the side of said distillation column; a diesel line from the diesel outlet in the side of said distillation column below said kerosene outlet; a separator communicating with said overhead line, said diesel line communicating with a lower line from said separator. Invention also relates to a diesel composition. Diesel stream is recovered separately from the kerosene stream, leaving the kerosene stream undiminished. Blended diesel yields a valuable composition.
EFFECT: method and use of the apparatus for blending a heavy naphtha stream with a diesel stream increase diesel yield.
7 cl, 2 dwg
