Direct return of oxygenate recycle stream in olefin production process
US7138558B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 27, 2005 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | Sep 27, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S585/921
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention is a process and the corresponding apparatus for producing light olefins from oxygenates in an OTO reactor comprising sending an oxygenate feed stream through a feed stream distributor into an OTO reactor, contacting the oxygenates with a catalyst to produce a mixture comprising light olefins, diolefins, unreacted oxygenate and other by-products; separating the unreacted oxygenate and diolefins from said light olefins and said by-products; and returning the unreacted oxygenate and diolefins to the OTO reactor. The unreacted oxygenate and diolefins are sent through at least one feed nozzle into said reactor at a point separate from the oxygenate feed stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.