PETR 66 |
| As the Canadian oil sands projects are flourishing and production of oil sands-derived synthetic crude oil increases to replace depleting conventional crude oil, the oil sands-derived middle distillate will also increase. In general, compared to conventional crude products, oil sands-derived products contain a large amount of aromatics, and their diesel fuel cetane number and jet fuel smoke point are low. Hence, it is important to monitor the quality of oil sands-derived feeds and products during hydroprocessing. Previously, Syncrude Research developed two Cetane Index (CI) correlations: one in 1991 and the other in 2000. The 1991 CI was based on the density at 20°C, mid-boiling point by simulated distillation and aniline point. It fits most of the oil sands bitumen-derived diesel fuels, but appears to have limitations for the narrow cut fuels. The 2000 CI fits better for the narrow cuts, but it used aromatics determined by supercritical fluid chromatography (SFC) instead of aniline point. It was recognized that many refiners could not get the SFC aromatics readily, compared to aniline point. We collected 312 middle distillate samples produced from various pilot and commercial plant operations at Syncrude and other four industrial research centers, and developed a new and better CI correlation including aniline point instead of SFC aromatics. We also developed new smoke point correlations, employing 212 data sets and including similar items used for CI correlations. |
|
2nd International Symposium on Hydrotreating/Hydrocracking Technologies
1:30 PM-4:30 PM, Monday, 11 September 2006 Palace -- Presidio Room, Oral
Division of Petroleum Chemistry |