Patent ID: 6299758
Filing Date: 2001-10-09
Classification: C10G,C10L

Abstract:
A low sulfur gas oil which has a sulfur concentration of 50 ppm or below and consists essentially of at least one gas oil base selected from the group consisting of:(a) a gas oil base produced by hydrodesulfurizing a fraction obtained from an atmospheric pressure distillation column and having a 5% recovered temperature in the range of 140 to 310.degree. C. and a 90% recovered temperature of lower than 340.degree. C., under reaction conditions with a hydrogen partial pressure of 20 to 70 kg/cm.sup.2, an LHSV of 1.0 to 20.0 and a reaction temperature of 280 to 450.degree. C.;(b) a gas oil base produced by hydrodesulfurizing a fraction obtained from an atmospheric pressure distillation column and having a 5% recovered temperature in the range of 140 to 340.degree. C. and a 90% recovered temperature in the range of 340 to 380.degree. C., under reaction conditions with a hydrogen partial pressure of 20 to 150 kg/cm.sup.2, an LHSV of 0.1 to 10.0 and a reaction temperature of 330 to 450.degree. C.;(c) a gas oil base having an initial boiling point of 260.degree. C. or higher and a 90% recovered temperature of 345.degree. C. or below, from fractions produced by hydrocracking a fraction obtained from an atmospheric pressure distillation column and having an initial boiling point of 260.degree. C. or higher and/or a vacuum gas oil distilled out from a reduced pressure distillation column, under conditions with a hydrogen partial pressure of 30 to 100 kg/cm.sup.2, an LHSV of 0.1 to 10.0 and a reaction temperature of 330 to 450.degree. C.; and(d) a gas oil base having an initial boiling point of 260.degree. C. or higher and a 90% recovered temperature of 345.degree. C. or below, from fractions produced by hydrocracking a fraction obtained from an atmospheric pressure distillation column and having an initial boiling point of 260.degree. C. or higher and/or a vacuum gas oil distilled out from a reduced pressure distillation column, under conditions with a hydrogen partial pressure of 100 to 250 kg/cm.sup.2, an LHSV of 0.01 to 10.0 and a reaction temperature of 350 to 450.degree. C.