Deasphalting process
US4324651A · kind A · utility
26Cited by
4References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 9, 1980 |
| Grant date | Apr 13, 1982 |
| Priority date | — |
| Expiry date | Dec 9, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/003
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An asphalt-containing mineral oil can be deasphalted at temperatures above about 80.degree. C. with methanol serving as the deasphalting solvent. Two liquid phases are produced, an asphalt-rich phase and a methanol-rich phase. By cooling the methanol-rich phase to a temperature below 80.degree. C., two additional liquid phases are produced, an oil-rich phase and a methanol-rich phase.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.