Methods and compositions for removing sulfur from liquid hydrocarbons
US7566687B2 · kind B2 · utility
2Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 2005 |
| Grant date | Jul 28, 2009 |
| Priority date | — |
| Expiry date | Jun 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/939
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Improved desulfurization compositions are provided for removing substantial fractions of sulfur, sulfur complexes, and sulfur compounds from liquid hydrocarbons such as crude oil and fuels. The preferred compositions comprise respective quantities of an alkylphenol ethoxylate, an amine, and an alkali metal nitrite. The compositions may be contacted with liquid hydrocarbons to achieve high levels of desulfurization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.