Dry and semi-dry methods for removal of ammonia from fly ash
US6746654B2 · kind B2 · utility
11Cited by
14References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 2002 |
| Grant date | Jun 8, 2004 |
| Priority date | — |
| Expiry date | Dec 4, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S106/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for removing ammonia from fly ash employs water mist (a water fog) or a flowing warm humid air stream to rid the fly ash of ammonia. Ozone alone or with other co-oxidants such as hydrogen peroxide are also used to rid fly ash of ammonia.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.