PETR 79 |
| The S amount has to be progressively reduced in gasoline and diesel fuels due to more stringent laws. N-containing compounds of these cuts detrimentally affect both HDS and HC reactions, pushing towards their removal before reaction. Among the methods proposed to remove N-compounds, sorption on solid materials is the most studied and economically interesting. The physico-chemical properties of sorbents (particle dimensions, crystallinity, acidity, etc.) influence the removal of basic and neutral N-compounds from a real LGO cut (e.g. SiO2 N-adsorption capacity), maintaining the other properties of the fuel (e.g. density). The removal is very high for the best materials (>75% of all N-compounds, >93% of basic N-compounds) and a partial desulfurisation is also observed (-10%). These treatments influence the reactivity in HDS reaction of LGO feed, with a strong temperature decrease, a very low amount of S in the products and a long catalyst life. |
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3rd International Symposium on Hydrotreating/Hydrocracking Technologies
1:30 PM-4:20 PM, Tuesday, August 21, 2007 Boston Park Plaza -- White Hill Rm, Oral
Division of Petroleum Chemistry |