FCC process with two zone short contact time reaction conduit
US6010618A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 5, 1997 |
| Grant date | Jan 4, 2000 |
| Priority date | — |
| Expiry date | Dec 5, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G11/18
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An FCC process provides ultrashort catalyst and feed contacting in an FCC riser by recovering a short contact product stream in an intermediate section of the riser. The remainder of the catalyst and gas mixture continues through the riser along a continuous flow path for further for controlled cracking of the heavier adsorbed hydrocarbons and entrained hydrocarbons. Residual catalyst separated from the recovery of the short contact product stream returns to the upstream end of the riser for recycle. The section of the riser downstream of the short contact product recovery may receive additional feed to perform secondary cracking reactions. The riser arrangement greatly simplifies methods for performing ultra short FCC feed and catalyst contacting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.