FCC process for converting C3/C4 feeds to olefins and aromatics
US7611622B2 · kind B2 · utility
25Cited by
17References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2006 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Sep 25, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2400/30
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A dual riser FCC process for converting C3/C4-containing feedstocks to aromatics. First and second hydrocarbon feeds (5, 6) are supplied to the respective first and second risers (2, 4) in a dual-riser FCC unit with a gallium enriched catalyst to make an effluent rich in ethylene, propylene and aromatics. The first riser (2) is operated at less severe conditions than the second riser (4) and can receive a relatively heavy feed such as gas oil. The feed to the second riser (4) includes propane, for example LPG, propane recycle from the C3 splitter (72), etc. The FCC catalyst can include gallium to promote aromatics formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.