Method for recovering oil from an oil-bearing solid material
US5998640A · kind A · utility
51Cited by
12References
39Claims
0Family size
Inventors
Key dates
| Filing date | May 30, 1996 |
| Grant date | Dec 7, 1999 |
| Priority date | — |
| Expiry date | May 30, 2016 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D11/028
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method and apparatus for continuously removing oil from oil-bearing solids such as tar sands, vegetables or other solid materials using a solvent is provided. By providing a pressure differential between the exterior and interior of an oil extraction chamber, substantially oil free solids may be removed from the oil extraction chamber through a solids extraction channel without removing any substantial volume of solvent through the solids extraction channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.