| Popis: |
The minimum effective pore diameters (MEPD) for the HDS, HDNi anf HDV reactions in resid hydroprocessing were determined using data on catalyst pellet sizes, metal contents, and intrinsic HDS activities of CoMo and Mo alumina catalysts. For Arabian Light/Medium vacuum resid feedstock, MEPD is ca. 4 nm for the HDS reaction and ca. 5 nm for HDNi and HDV reactions. A model was developed to estimate the sizes of sulfur and metal bearing molecules and to determine the optimum pore diameters. The results were successfully applied to the development of an improved bottoms desulfurization catalyst, HDS-2443, for the H-Oil process. |
