Method for increasing light olefin yield by conversion of a heavy hydrocarbon fraction of a product to light olefins
US6455749B1 · kind B1 · utility
19Cited by
21References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 1997 |
| Grant date | Sep 24, 2002 |
| Priority date | — |
| Expiry date | Oct 3, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method for increasing light olefin yield during conversion of oxygenates to olefins comprising: contacting an oxygenate feed in a primary reactor with a non-zeolitic molecular sieve catalyst under conditions effective to produce a first product comprising light olefins; separating the first product into light olefins and a heavy hydrocarbon fraction; feeding the heavy hydrocarbon fraction either back into the primary reactor or to a separate auxiliary reactor; and, subjecting the heavy hydrocarbon fraction to conditions effective to convert at least a portion of the heavy hydrocarbons to light olefins.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.