Process for cracking hydrocarbon oils
US7347930B2 · kind B2 · utility
7Cited by
20References
6Claims
0Family size
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Key dates
| Filing date | Oct 15, 2004 |
| Grant date | Mar 25, 2008 |
| Priority date | — |
| Expiry date | Nov 24, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A novel process for cracking olefins including contacting a hydrocarbon oil with a catalyst in a riser reactor having multiple reaction zones under cracking reaction conditions; separating reaction products and the catalyst; regenerating at least a part of spent catalyst obtained, contacting a part of the regenerated catalyst with the hydrocarbon in the first reaction zone; contacting the other part of the spent catalyst and/or regenerated catalyst in at least one reaction zone after the first reaction zone with the products obtained in previous reaction zones.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.