Demetallization and passivation of spent cracking catalysts
US5021377A · kind A · utility
7Cited by
8References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 5, 1990 |
| Grant date | Jun 4, 1991 |
| Priority date | — |
| Expiry date | Jun 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S502/521
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for reactivating a spent, metal-contaminated zeolite-containing catalytic cracking catalyst composition comprises partially demetallizing (preferably by chlorinating and washing) the spent catalytic cracking catalyst composition, and thereafter contacting it with at least one fluorine compound (preferably NH.sub.4 F) and at least one antimony compound. The thus reactivated catalytic cracking catalyst composition is employed in a catalytic cracking process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.