Alkaline sorbent injection for mercury control
US6372187B1 · kind B1 · utility
107Cited by
49References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 7, 1998 |
| Grant date | Apr 16, 2002 |
| Priority date | — |
| Expiry date | Dec 7, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/81
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A mercury removal system for removing mercury from combustion flue gases is provided in which alkaline sorbents at generally extremely low stoichiometric molar ratios of alkaline earth or an alkali metal to sulfur of less than 1.0 are injected into a power plant system at one or more locations to remove at least between about 40% and 60% of the mercury content from combustion flue gases. Small amounts of alkaline sorbents are injected into the flue gas stream at a relatively low rate. A particulate filter is used to remove mercury-containing particles downstream of each injection point used in the power plant system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.