Process for catalyst regeneration
US9327278B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2014 |
| Grant date | May 3, 2016 |
| Priority date | — |
| Expiry date | Dec 17, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G45/68
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process is disclosed for an improved catalyst regeneration process to improve catalyst stability and hence increase overall catalyst life. The process includes passing a spent catalyst stream to a first, or upper, combustion zone to partially regenerate the catalyst through controlled combustion of the carbon on the catalyst. The first combustion zone will burn off a high fraction of hydrogen at lower temperatures generating a large fraction of H2O. The partially regenerated catalyst is passed to a second, or lower, combustion zone to burn off the remaining coke at the needed high severity operation. The second combustion zone will burn off the remaining coke at a higher temperature and higher oxygen gas inlet concentration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.