Inhibiting catalyst coke formation in the manufacture of an olefin
US6657022B2 · kind B2 · utility
40Cited by
2References
48Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 11, 2002 |
| Grant date | Dec 2, 2003 |
| Priority date | — |
| Expiry date | Jun 11, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P30/40
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Disclosed is a method for inhibiting catalyst coke formation in the manufacture of an olefin. In particular, the method inhibits coke formation on a silicoaluminophosphate molecular sieve catalyst in the manufacture of ethylene and/or propylene. The method includes contacting an oxygenate-containing feedstock with a silicoaluminophosphate molecular sieve catalyst to form the olefin-containing product, and separating the olefin-containing product from the catalyst. An unregenerated portion of the separated catalyst is cooled before contacting with additional oxygenate feedstock to reduce coke formation on the catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.