Hydroprocessing using rejuvenated supported hydroprocessing catalysts
US8128811B2 · kind B2 · utility
14Cited by
4References
27Claims
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Key dates
| Filing date | Apr 3, 2009 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Apr 14, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/708
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Methods for hydroprocessing of hydrocarbon feedstocks, including hydrodesulfurization and hydrodenitrogenation, using rejuvenated supported metallic catalysts are provided. The supported metallic catalysts comprised of a Group VIII metal, a Group VIB metal, are rejuvenated by a process making use of these metals, an organic complexing agent, and optionally an organic additive. The rejuvenation includes stripping and regeneration of a spent or partially spent catalyst, followed by impregnation with metals and at least one organic compound. The impregnated, regenerated catalysts are dried, calcined, and sulfided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.