UPGRADING HEAVY OILS BY NON-CATALYTIC TREATMENT WITH HYDROGEN AND HYDROGEN TRANSFER SOLVENT

摘要

ABSTRACTHeavy liquid hydrocarbon oils such as petroleumderived tars, predominantly boiling over 425°C, areupgraded to products boiling below 425°C, withoutsubstantial formation of insoluble char, by heating theheavy oil with hydrogen and a hydrogen transfer solvent inthe absence of hydrogenation catalyst at temperatures ofabout 320°C to 500°C, and a pressure of 20 to 180 bar for3 to 30 minutes. The hydrogen transfer solvents arepolycyclic compounds free of carbonyl groups, e.g.,pyrene, and have a polarographic reductiong potential whichis less negative than phenanthrene and equal to or morenegative than azapyrene.