Efficient method using liquid water to regenerate oxygenate to olefin catalysts while increasing catalyst specificity to light olefins
US6245703A · kind A · utility
19Cited by
20References
4Claims
0Family size
Assignee
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Key dates
| Filing date | Apr 29, 1998 |
| Grant date | Jun 12, 2001 |
| Priority date | — |
| Expiry date | Apr 29, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a method for maintaining temperature during regeneration of an oxygenate to olefins catalyst using liquid water as a coolant in an amount sufficient either to reduce duty of a catalyst cooler or to avoid the need to use a catalyst cooler altogether. The method also may be used to hydrotreat fresh, non-hydrothermally treated catalyst which may be added to the regenerator and charged back to the conversion reactor along with the regenerated catalyst.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.