Three-stage counter-current FCC regenerator
US7915191B2 · kind B2 · utility
9Cited by
1References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 23, 2009 |
| Grant date | Mar 29, 2011 |
| Priority date | — |
| Expiry date | Sep 30, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J38/70
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
This invention is directed to a method and apparatus for regenerating a catalyst used in an FCC unit, including providing a spent catalyst into an upper portion of a regenerator, maintaining a calcination phase, a gasification phase, and a combustion phase of fluidized catalyst in the regenerator, combusting carbon in the combustion phase and producing a combustion flue gas, reacting carbon in the gasification phase with the combustion flue gas to form a carbon monoxide rich flue gas, and calcining the spent catalyst with the carbon monoxide rich flue gas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.