PETR 36 |
| Synthetic crude oils contain relatively large amount of heteroatoms such as nitrogen and sulfur, which negatively influence on their potential exploitation as substitute transport fuels. In this study, nitrogen compounds were removed from light gas oil fractions of Stuart shale oil (SO), pyrolysis product of Athabasca bitumen (OS) and Indonesian coal liquid (CL) by solid extraction using CuCl2•2H2O at 60oC, for 2h. The extracted oils were hydrotreated using a batch-type autoclave and commercial NiMo/Al2O3 catalyst at 350oC for 2-4h under H2 initial pressure of 5MPa. Nitrogen removals by the extraction were 82%, 54% and 79% for SO, OS and CL respectively. The pre-removal of nitrogen compounds from the synthetic crude oils greatly enhanced their hydrodenitrogenation rates and improved quality of hydrotreated products. Deep hydrotreatment by the proposed method can be considered as one alternative route for conversion of the oils to a high quality feedstock suitable for production of clean diesel fuels. |
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2nd International Symposium on Hydrotreating/Hydrocracking Technologies
8:30 AM-11:50 AM, Monday, 11 September 2006 Palace -- Presidio Room, Oral
Division of Petroleum Chemistry |