Thermal hydrocracking of topped heavy oils

Details Thermal hydrocracking of topped heavy oils Thermal hydrocracking of topped heavy oils

C - Chemistry, Metallurgy

10

G

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C10G 47/00 (2006.01) C10G 47/22 (2006.01)

Patent

CA 1095847

THERMAL HYDROCRACKING OF TOPPED HEAVY OILS Abstract of the Disclosure An improved process is described for the thermal hydrocracking of heavy hydrocarbon oil, such as oils ex- tracted from tar sands. The charge oil in the presence of an excess of hydrogen is passed upwardly through a vertical hydrocracking zone and the effluent emerging from the top of the zone is separated into a gaseous stream and a liquid stream containing heavy hydrocarbons. According to the novel feature, the heavy hydrocarbon charge oil is one which has been topped in a distillation column to an equivalent at- mospheric boiling temperature of at least 350°C. It has been found that the topping of the charge oil results in lower hydrogen consumption per barrel of pitch converted. Surprisingly, operability of the plant is improved with heavier feed and significantly lower coke formation being experienced.

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