FCC process with total catalyst blending
US5346613A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Sep 24, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An FCC process decouples the circulation of catalyst on the regeneration side of the process from the circulation of catalyst on the reactor side of the FCC process by mixing the spent and regenerated catalyst from the reactor and regenerator side of the process in a common blending vessel that receives all of the spent and regenerated catalyst from the reactor and regenerator. The blending vessel supplies blended catalyst to raise the solids to oil ratio on the reaction side of the process and regulate catalyst temperatures on the reaction and the regeneration sides of the process. The blending vessel can also retain the majority of the catalyst inventory for both the reactor and regenerator sides of the process. Moreover, by the introduction of a stripping gas into the blending vessel it operates as a hot stripper to remove additional hydrocarbons from the blended catalyst that enters the regeneration zone. The blended catalyst also has a relatively high temperature that benefits the process by allowing rapid initiation of coke combustion in the regeneration zone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.