Use of water/methanol mixtures as solvents for aromatics extraction
US3985644A · kind A · utility
6Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 30, 1975 |
| Grant date | Oct 12, 1976 |
| Priority date | — |
| Expiry date | Jan 30, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G21/16
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Petroleum fractions may be separated into aromatic-rich and paraffinic-rich hydrocarbon streams by the use of methanol/water mixtures having more than 20% water. The paraffinic-rich stream is recovered as raffinate. The aromatic-rich stream passes out of the extraction zone and is recovered by lowering the temperature to induce a phase separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.