Upgrading heavy oils by non-catalytic treatment with...

Details Upgrading heavy oils by non-catalytic treatment with... Upgrading heavy oils by non-catalytic treatment with...

C - Chemistry, Metallurgy

10

G

196/146, 196/163

C10G 9/14 (2006.01) C10G 47/34 (2006.01)

Patent

CA 1148889

ABSTRACT Heavy liquid hydrocarbon oils such as petroleum derived tars, predominantly boiling over 425°C, are upgraded to products boiling below 425°C, without substantial formation of insoluble char, by heating the heavy oil with hydrogen and a hydrogen transfer solvent in the absence of hydrogenation catalyst at temperatures of about 320°C to 500°C, and a pressure of 20 to 180 bar for 3 to 30 minutes. The hydrogen transfer solvents are polycyclic compounds free of carbonyl groups, e.g., pyrene, and have a polarographic reductiong potential which is less negative than phenanthrene and equal to or more negative than azapyrene.

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