External second stage cyclones in olefin production process
US7208649B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Apr 24, 2007 |
| Priority date | — |
| Expiry date | Sep 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention comprises a process and apparatus for producing olefins from oxygenates in a reactor. This process comprises these oxygenates with a catalyst to produce a gaseous mixture comprising light olefins and by-products, sending the mixture to a single stage cyclone within said reactor to separate said catalyst from said gaseous mixture and then sending said the to a second stage cyclone. The second stage cyclone is located outside of said reactor and it functions to remove the catalyst from the mixture. Then the catalyst can be returned to the reactor after having been treated in a regeneration zone to remove carbonaceous deposits from the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.