Sorbents for the oxidation and removal of mercury
US7435286B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2005 |
| Grant date | Oct 14, 2008 |
| Priority date | — |
| Expiry date | Mar 18, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S95/901
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A promoted activated carbon sorbent is described that is highly effective for the removal of mercury from flue gas streams. The sorbent comprises a new modified carbon form containing reactive forms of halogen and halides. Optional components may be added to increase reactivity and mercury capacity. These may be added directly with the sorbent, or to the flue gas to enhance sorbent performance and/or mercury capture. Mercury removal efficiencies obtained exceed conventional methods. The sorbent can be regenerated and reused. Sorbent treatment and preparation methods are also described. New methods for in-flight preparation, introduction, and control of the active sorbent into the mercury contaminated gas stream are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.