The relationship between chemical structure and reactivity of alberta bitumens and heavy oils

Abstract

Abstract Long residues (424°C +) from Athabasca, Cold Lake, Lloydminster, and Peace River were hydrocracked over a commercial NilMo on y‐alumina catalyst at 430°C, 13.9 MPa (2000 psia). The conversion of residue fraction ranged from 55 to 68%, and was correlated with the concentration of carbon bound to aromatic rings in the feeds. Conversions of sulfur, Micro‐Carbon Residue, and metals were all highest for Peace River feed, following the same ranking as residue conversion. Estimates for the breakage of carbon‐carbon bonds and the uptake of hydrogen were diagnostic in interpreting the reactor performance.