New cetane index is more accurate for Canadian oil sands-derived diesels

Syncrude Canada Ltd.’s Edmonton Research Center has developed a new cetane index (CI), using laboratory data from 306 middle distillates obtained from various pilot and commercial plants that upgrade oil sands bitumen. The samples cover a wide range of boiling points and sulfur contents.The new CI correlation requires the aniline point, the density at 15° C., and the 10%, 50%, and 90% recovery temperature by simulated distillation. It is much more accurate than the ASTM-calculated CI that uses four variable equations for oil sands-derived diesel fuels.The new CI correlation may be applied to oil sands bitumen-derived diesel fuels from any conceivable upgrading process, untreated...

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