Method for reducing the selenium concentration in an oil refinery effluent
US5601721A · kind A · utility
13Cited by
8References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 29, 1994 |
| Grant date | Feb 11, 1997 |
| Priority date | — |
| Expiry date | Apr 29, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01J41/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
Selenium exists in oil refinery stripped sour water as selenocyanate and can be effectively removed using an acrylic, strong base, anion exchange column or stannous chloride. The acrylic, strong base, anion exchange column can also be employed to remove arsenic, iron, and vanadium from an aqueous fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.