Reduced elevation catalyst return line for a fluid catalytic cracking unit
US8202412B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 17, 2007 |
| Grant date | Jun 19, 2012 |
| Priority date | — |
| Expiry date | Aug 21, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/301
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention is an improved regenerated catalyst bend assembly for a fluid catalytic cracking unit. In a preferred embodiment, the reduced elevation (“RE-bend” or “REL-bend”) regenerated catalyst return line assembly of the present invention has an outlet elevation that is lower than the inlet elevation of the RE-bend or REL-bend regenerated catalyst return line assembly, and a process for utilizing the assembly in a fluid catalytic cracking unit. The present invention is especially useful in the modification of existing fluid catalytic cracking units to lower the elevation of the outlet of the regenerated catalyst return line assembly, thereby providing needed space to increase the fluid catalytic cracking reactor riser length.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.