Apparatus for the separation of fluid cracking catalyst particles from gaseous hydrocarbons
US4692311A · kind A · utility
21Cited by
13References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1984 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Feb 10, 2004 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04C2009/004
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Catalyst and hydrocarbon vapors are separated in a cyclone zone attached to the discharge of a riser cracking operation. A vortex stabilizer separating the cyclone zone from a stripping zone allows stripping gas from the stripping zone to be passed upwardly into the cyclone zone countercurrent to the downward flow of catalyst, thereby improving the separation and stripping of gaseous hydrocarbons from separated catalyst. The combined cyclone-stripping zone reduces catalyst hydrocarbon contact time, thereby improving gasoline yield and olefin content, decreasing gas make, and reducing coke deposits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.