Method for fractionating grease trap waste and uses of fractions therefrom
US7161017B2 · kind B2 · utility
5Cited by
15References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 2002 |
| Grant date | Jan 9, 2007 |
| Priority date | — |
| Expiry date | Dec 12, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/74
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for producing unsaturated and saturated free fatty acid from trap oils, trap greases, brown greases and grease trap waste as starting material. The process consist in subjecting the starting material to a pretreatment, a first purification step, a fractional step, a second purification step and eventually a hydrogenation step. Methyl esters of unsaturated and saturated free fatty acids, oleic acid and stearin is obtained from this process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.