초록 ▼

High yields of desired distillate oil are obtained by subjecting heavy oil to catalytic conversion with hydrogen at superatmospheric pressure in a temperature staged process, wherein the oil-catalyst slurry is subjected in the initial stage to a temperature in the range of 780°-825°F. (415°-440°C.)

High yields of desired distillate oil are obtained by subjecting heavy oil to catalytic conversion with hydrogen at superatmospheric pressure in a temperature staged process, wherein the oil-catalyst slurry is subjected in the initial stage to a temperature in the range of 780°-825°F. (415°-440°C.) and in a subsequent stage to a temperature which is at least 20°F. higher than that employed in the previous stage, preferably in the range of 800°-860°F. (＿425°-460°C.).

대표청구항 ▼

The method for hydroconversion of feedstocks consisting essentially of at least one heavy hydrocarbon oil selected from the group consisting of residue of petroleum oil distillation and the residue of tar sand bitumen distillation to enhance the recovery of 350°-650°F. boiling product fraction, whic

The method for hydroconversion of feedstocks consisting essentially of at least one heavy hydrocarbon oil selected from the group consisting of residue of petroleum oil distillation and the residue of tar sand bitumen distillation to enhance the recovery of 350°-650°F. boiling product fraction, which method comprises treating such feed stock with hydrogen at superatmospheric pressure and in the presence of finely divided active hydrogenation catalyst in consecutive reaction stages, wherein an initial reaction stage is carried out at a temperature in the range of 780°-825°F. and a subsequent reaction stage is directly carried out after the initial reaction stage at a higher temperature in the range of 800°-860°F., the temperature of said subsequent reaction stage being at least 20°F. higher than that of said initial reaction stage.