Treatment of heavy hydrocarbon oil

Abstract

Abstract PURPOSE:To obtain a heart cut corresponding to kerosine and gas oil fractions, in high yield, by heat-cracking a heavy hydrocarbon oil, separating the low- boiling components, and hydrogenating the residue. CONSTITUTION:Heavy hydrocarbon oil such as topping or vacuum distillation bottom oil, oilsand oil, etc. is thermally cracked preferably at 420-470 deg.C and 10-30kg/cm<2>G for 10-30min, e.g. by visbreaking process. The thermally cracked oil is separated into the fraction having a lower boiling point than kerosine and gas oil fractions and the residual oil fraction, e.g. by distillation, flushing, etc. at 320-450 deg.C and 10-30kg/cm<2>G, preferably into the fractions having a boiling point of >=343 deg.C and that of <343 deg.C. The residual oil component, i.e. the fraction having a boiling point of >=343 deg.C is hydroreformed under the conditions of 380-450 deg.C, 0.5-1.5hr<-1>, 50-150kg/cm<2>G and a hydrogen/oil ratio of 700- 1,300Nm<3>/kl, preferably in the presence of a catalyst.

Inventors

• 👤 Masahiko Shiraishi
• 👤 正彦 白石
• 👤 Yoshio Kudo
• 👤 工藤　義夫

Bibliographic Details