Process for causing the gaseous sulfur compounds of flue gases to react to form solid compounds which can be separated from the flue gases
US4788047A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 1985 |
| Grant date | Nov 29, 1988 |
| Priority date | — |
| Expiry date | Nov 5, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01F11/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The invention relates to a process and apparatus for causing the sulfur dioxide of flue gases to react to form solid sulfates and sulfites which can be separated from the flue gases. Sulfur dioxide containing flue gases (16) are directed according to the invention into one end of an oblong reaction zone (4), in addition to which pulverous calcium compounds and water are directed separately into the reaction zone at several points, and finally from the opposite end a flue gas suspension is withdrawn and directed to dust separation (5). By feeding the pulverous reagent and the water separately into the reactor 4, the problems involved in the preparing, handling and spraying of an aqueous slurry are avoided, in addition to which the retention time and the reaction conditions can be regulated easily in the oblong reactor 4.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.