Method of purifying contaminated oil in a centrifugal separator using a separation aid and starting liquid
US7410456B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2003 |
| Grant date | Aug 12, 2008 |
| Priority date | — |
| Expiry date | Feb 1, 2025 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S494/901
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
In a centrifugal separator the liquid separation aid attracts/binds contaminating particles in oil supplied to a separation chamber. Purified oil is discharged through a central light phase outlet of the separation chamber, the liquid separation aid and separated particles are discharged through a heavy phase outlet. Purification is carried through using a starting liquid, supplied to the separation chamber to form a layer that creates a liquid seal in the centrifugal rotor, covering said heavy phase outlet. Contaminated oil and liquid separation aid are supplied to the separation chamber. While purified oil leaves the separation chamber through the light phase outlet, at starting liquid and liquid separation aid together with particles are discharged through the heavy phase outlet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.