Method of removing contaminants from petroleum distillates
US6320090A · kind A · utility
11Cited by
5References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 10, 1999 |
| Grant date | Nov 20, 2001 |
| Priority date | — |
| Expiry date | Mar 10, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M175/0016
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Polynuclear aromatic hydrocarbons (PAHs) and other contaminants are removed from petroleum distillates by mixing a solvent with petroleum distillate to extract the contaminants therefrom. The solvent is recovered and distilled to separate the contaminants therefrom, and is then reused. The petroleum distillate having the contaminants separated therefrom is also distilled to remove any remaining solvent therefrom, with the recovered solvent being reused.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.