Process for hydrotreating heavy hydrocarbon oil

Details Process for hydrotreating heavy hydrocarbon oil Process for hydrotreating heavy hydrocarbon oil

C - Chemistry, Metallurgy

10

G

C10G 45/58 (2006.01) C10G 45/28 (2006.01) C10G 47/34 (2006.01) C10G 49/00 (2006.01) C10G 49/20 (2006.01) C10G 45/44 (2006.01)

Patent

CA 2150205

A novel hydrotreating process is provided, which comprises hydrotreating a mixed oil of a heavy hydrocarbon oil feedstock and at least one additive oil or partially aromatic ring-hydrogenated oil thereof in an amount of 0.3 to 15% by weight with respect to the feedstock, at a temperature of 330 to 460°C, a hydrogen partial pressure of 50 to 250 Kg/cm2, a liquid hourly space velocity (LHSV) of 0.1 to 4.0 hr-1 in the presence of a hydrotreating catalyst, the additive oil being selected from the group consisting of coal-tar oils, tar-sand oils, oil shale- or bitumen-derived oils, and oils obtained by coal liquefaction. According to the process, coke formation, which cause clogging of heat exchangers, an increase in the pressure drop of preheaters, and a decrease in catalytic activity, can be greatly reduced.

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