Process for producing a fuel oil base material
US5888379A · kind A · utility
27Cited by
5References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1996 |
| Grant date | Mar 30, 1999 |
| Priority date | — |
| Expiry date | Aug 13, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G65/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for producing a fuel oil base material having a lower sulfur content than that of stock oil and a dry sludge content of 0.05 mass % or less, which involves hydrotreating the stock oil having a dry sludge content of 0 to 5.0 mass % and a sulfur content of 1.0 to 10 mass % in two stages is provided, wherein the temperature of first-stage hydrotreatment is 340.degree. to 450.degree. C. and the temperature of second-stage hydrotreatment is 200.degree. to 440.degree. C. and maintained at a temperature lower than the temperature of the first-stage hydrotreatment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.