Riser extension apparatus and process
US11517869B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2019 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Jun 29, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/706
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In an apparatus for fluid catalytic cracking a riser having a top and a bottom for fluidizing and cracking a hydrocarbon feed stream by contact with catalyst exits an outlet at the top of the riser. A downer in communication with the outlet of the riser receives cracked hydrocarbon product and catalyst. A swirl duct in communication with the downer has a discharge opening below the outlet for discharging said cracked hydrocarbon product and catalyst. A stream of hydrocarbon feed and a catalyst is passed upwardly in a riser. A stream of gaseous hydrocarbon products and catalyst is directedly downwardly and then the stream of gaseous hydrocarbon products and catalyst are directed to flow in an angular direction to separate gaseous hydrocarbon products from the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.