Denitrogenation of syncrude
US4159940A · kind A · utility
22Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1978 |
| Grant date | Jul 3, 1979 |
| Priority date | — |
| Expiry date | Mar 6, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G67/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for removing nitrogen from an essentially liquid syncrude feed obtained from at least one of oil shale, tar sands, and coal wherein the syncrude is mixed with an acid selected from the group consisting of sulfuric, phosphoric, hydrochloric, and combinations thereof, settling to form a first phase composed of syncrude low in nitrogen and a second phase composed of acid and syncrude high in nitrogen, separating the two phases, and catalytically hydrotreating the high nitrogen phase to reduce its nitrogen content.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.