Oil purification by deasphalting and magneto-filtration
US4298456A · kind A · utility
13Cited by
4References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1980 |
| Grant date | Nov 3, 1981 |
| Priority date | — |
| Expiry date | Jul 22, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G32/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Demetallized hydrocarbon feedstock is obtained from heavy oils by first solvent extracting the heavy oils and then demetallizing the extract in a magneto-filtration step. In another embodiment, diamagnetic nickel complexes in hydrocarbon oils are first converted to a paramagnetic product and the oil stream thereafter is passed through a magneto-filtration operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.