Device for controlling the operating conditions in a catalytic cracking unit with two risers
US8957267B2 · kind B2 · utility
0Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 3, 2009 |
| Grant date | Feb 17, 2015 |
| Priority date | — |
| Expiry date | Apr 22, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/20
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention concerns a process for the production of gasoline and for the co-production of propylene using a catalytic cracking unit comprising a catalyst regeneration zone and a reaction zone with two risers functioning in parallel under different severity conditions, the catalyst circulating between the regeneration zone and the reaction zone in two parallel circuits, a circuit termed the principal circuit comprising a first external catalyst cooling system, and a circuit termed the secondary circuit comprising a second external catalyst cooling system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.