FCC counter-current regenerator with a regenerator riser
US10751684B2 · kind B2 · utility
0Cited by
7References
19Claims
0Family size
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Key dates
| Filing date | Nov 30, 2017 |
| Grant date | Aug 25, 2020 |
| Priority date | — |
| Expiry date | Jun 23, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF23G2203/50
- 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.