Heat balance in FCC process and apparatus with downflow reactor riser
US4411773A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1982 |
| Grant date | Oct 25, 1983 |
| Priority date | — |
| Expiry date | Jul 30, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a fluid catalytic cracking (FCC) process and apparatus, the heat balance between the reactor and the regenerator of the FCC operation is partially uncoupled by transferring at least a portion of thermal energy from the reactor vessel downflow riser to the regenerator vessel. The transfer of thermal energy results in a higher regenerating temperature. The thermal energy is recirculated to the upstream section of the downflow reactor riser through a regenerated catalyst having higher temperature. Consequently, the outlet of the reactor vessel is maintained at a substantially constant temperature (e.g., 1000.degree. F.) and the rate of conversion of the oil feed and the octane number of gasoline produced in the process are increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.