Low severity fluid coking
US4816136A · kind A · utility
13Cited by
8References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 17, 1987 |
| Grant date | Mar 28, 1989 |
| Priority date | — |
| Expiry date | Feb 17, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G9/32
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A fluid coking process is provided in which a fresh carbonaceous feed is coked in a transfer line first coking zone positioned in a fluidized bed second coking zone. A heavy oil coker product is recycled to the fluidized bed second coking zone maintained at a lower temperature than the first coking zone. This process permits low severity coking of the fresh carbonceous feed and higher severity coking of the recycle oil, thereby minimizing conversion to coke and gas and increasing yield of normally liquid products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.