Continuous purification of motor oils using a three-phase separator
US10696918B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2014 |
| Grant date | Jun 30, 2020 |
| Priority date | — |
| Expiry date | Jun 29, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB04B2013/006
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method for continuous purification of motor lubricant oil includes circulating lubricant oil between a motor lubricant oil tank and a motor; transporting contaminated lubricant oil from the motor lubricant oil tank in a cleaning loop. The transport in the cleaning loop includes adding at least one liquid separation aid to contaminated lubricant oil; supplying contaminated lubricant oil to a three-phase centrifugal separator; continuously separating contaminants from the lubricant oil in the separator and continuously discharging a first liquid phase including purified lubricant oil from a liquid light phase outlet of the separator, continuously discharging a second liquid phase including solid contaminants from a liquid heavy phase outlet of the separator and continuously discharging a sludge phase from a sludge outlet by the aid of a conveyor screw of the three-phase separator. The method further includes transporting the first liquid phase including purified oil back to the lubricant oil tank. The present invention further provides a system for carrying out the method.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.