Process, method, and system for removing heavy metals from fluids
US8702975B2 · kind B2 · utility
8Cited by
39References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 16, 2010 |
| Grant date | Apr 22, 2014 |
| Priority date | — |
| Expiry date | Sep 18, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/44
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Trace levels of heavy metals in fluids such as crude oil are reduced by contacting the crude oil with a composition comprising a compound of Formula (I),wherein X is an anion of valency n, the number of phosphonium cations present. In one embodiment, the composition further comprises a complexing additive comprising an amine or corresponding ammonium derivative. Upon contact with the crude oil, the heavy metals form soluble complexes with the compound of Formula (I) for subsequent removal from the crude oil via phase separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.