Staged catalytic cracking process
US5314610A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 29, 1992 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | May 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A staged catalytic cracking process and apparatus is disclosed where each stage has a catalyst to oil ratio of at least 15 and there are individual hydrocarbon feeds to each stage and product removal from each stage. There is a residence time profile with the first stage having a short residence time and the successive stages having progressively longer residence times. Further, there is a feed profile with the lighter components of the total feed going to the first stage and the heavier components being fed to the later stages. The apparatus has a generally vertical orientation which permits it to be incorporated into existing cracking units for upgrading and also easily provides for both short and long residence times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.