Reverse-graded catalyst systems for hydrodemetalation and hydrodesulfurization
US4789462A · kind A · utility
18Cited by
19References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1986 |
| Grant date | Dec 6, 1988 |
| Priority date | — |
| Expiry date | Sep 29, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
We provide reverse-graded catalyst systems which are capable of removing metals and sulfur from a hydrocarbon feedstock. They comprise two or more catalyst layers in which at least two successive catalyst layers characterized as having decreasing desulfurization activity, and increasing average macropore diameter in the direction of hydrocarbon flow. We also disclose a process for using them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.