Method and apparatus for separating oil and water
US6132620A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | Oct 17, 2000 |
| Priority date | — |
| Expiry date | Jul 6, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC02F2101/32
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Oil is separated from an aqueous mixture by first feeding the oil-water mixture into a separation tank and allowing the mixture to separate by gravity so that the oil rises to the surface, forming a layer above the aqueous phase; then removing the layer of oil from the surface. The lower aqueous phase, typically containing residual oil in emulsified form, is removed through an outlet near the bottom of the tank and transferred to a second tank, forming a pool therein. The water is removed from the second tank by the action of an air-operated pump through a float-controlled ball valve to an external filter for removal of residual oil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.