Process and apparatus for cleaning hot gases
US4917873A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1988 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jul 6, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S423/13
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
In order to clean gases containing noxious components by contacting the gases with a solid material layer adhering to carrier bodies, the solid material layer is applied to the carrier body by wetting with an impregnating solution and then drying the solution on the carrier bodies. After being used up by reaction with the gases to be cleaned, the solid material layer is removed from the carrier bodies, after which it can be replaced by wetting with impregnating solution and drying again. The carrier bodies are stationary and the impregnating solution is trickled over them. Once the carrier bodies are wetted, irrigation with the impregnation solution is interrupted and the solution is dried on the carrier bodies. When the gas reaction at the solid material layer thus formed weakens, the stationary carrier bodies are re-irrigated with impregnation solution and dried. After many repeated impregnations the solid material layer is washed away by flushing or flooding the carrier bodies with a wash solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.