Method for the direct conversion of a charge containing olefins comprising a minimum of four or five carbon atoms, for producing propylene
US7579513B2 · kind B2 · utility
5Cited by
3References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 2, 2004 |
| Grant date | Aug 25, 2009 |
| Priority date | — |
| Expiry date | Feb 20, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/584
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for producing propylene, especially from a light steam cracking and/or catalytic cracking cut, preferably comprising both butenes and pentenes, said process comprising a step for moving bed catalytic cracking with a catalyst regeneration loop. The catalyst comprises at least one zeolite with a zeolitic composition with a Si/Al ratio which is preferably less than 130.The invention can produce a high conversion with a good yield of propylene at a high space velocity, meaning that the volume of catalyst can be reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.