Removal of mercury from a combustion gas stream and apparatus
US5607496A · kind A · utility
133Cited by
1References
64Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 29, 1995 |
| Grant date | Mar 4, 1997 |
| Priority date | — |
| Expiry date | Jun 29, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D53/8665
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
in a hot combustion gas stream are removed therefrom by oxidizing the elemental mercury, to form a mercury compound, and adsorbing the mercury compounds on adsorbent particles such as activated alumina. Oxidation is catalytically promoted. After adsorbing a substantial quantity of mercury compounds, the spent adsorbent particles can be regenerated and re-used by heating the particles to decompose and drive off the mercury compounds. In another embodiment, oxidation of the elemental mercury is catalytically promoted at a catalyzing station, and the mercury compounds are removed from the gas stream by scrubbing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.