FCC counter-current regenerator with a regenerator riser
US10239054B2 · kind B2 · utility
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3References
20Claims
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Assignee
Inventors
Key dates
| Filing date | Nov 30, 2017 |
| Grant date | Mar 26, 2019 |
| Priority date | — |
| Expiry date | Nov 30, 2037 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J2208/00938
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A counter-current catalyst regenerator with at least two stages of counter-current contact along with a regenerator riser is proposed. Each stage may comprise a permeable barrier that allows upward passage of oxygen-containing gas and downward passage of coked catalyst into each stage, but inhibits upward movement of catalyst to mitigate back mixing and approximate true counter-current contact and efficient combustion of coke from catalyst. The regenerator riser may provide a passage to transport the catalyst and may serve as a secondary stage for coke combustion to provide the regenerated catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.