Activated carbon filter for removing toxic substances, e.g., dioxins and furans, from flue gases prior to entry into the smokestack
US5198004A · kind A · utility
3Cited by
9References
11Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1991 |
| Grant date | Mar 30, 1993 |
| Priority date | — |
| Expiry date | Dec 11, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2259/40084
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention pertains to a device for removing toxic substances, e.g., dioxins and furans, from flue gases, e.g., a refuse incinerator plant, prior to entry into the smokestack. To adsorb these toxic aromatic substances, activated carbon is mixed with 30-40 vol. % water in a filter vessel, and the flue gases in the form of chains of fine bubbles are passed through the activated carbon-water mixture. The filter vessel 1 has a perforated partition 13 acting as a gas distributor. The activated carbon sludge saturated with toxic substances is drawn off and replaced by correspondingly adding dry activated carbon and water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.