Process for reactivating a deactivated dehydrocyclodimerization catalyst with water
US6395664B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 1999 |
| Grant date | May 28, 2002 |
| Priority date | — |
| Expiry date | Feb 5, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2229/42
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant process restores substantially all of the catalyst's lost activity. The process involves treating the catalyst with a fluid comprising water and drying the catalyst. The process is employed particularly advantageously in combination with coke removal for reactivating catalysts that contain coke deposits and that have also been hydrogen deactivated. This invention also relates to a method of producing a dehydrocyclodimerization catalyst that is resistant to hydrogen deactivation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.