Treatment of process gases containing halogenous compounds
US5481063A · kind A · utility
3Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Jan 2, 1996 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E20/30
- WIPO fieldEnvironmental technology
- WIPO sectorChemistry
Abstract
The present invention relates to a method of treating various chlorine-containing materials such as wastes, biological sludges and even metal concentrates in a circulating fluidized bed reactor (1) or a grate furnace at a high temperature of over 830.degree. C. and of cooling the resultant process gases for minimizing the amount of polyhalogenated aromatic compounds in the process gases. The process gases are cooled to a temperature below 250.degree. C. at a cooling velocity exceeding 1000.degree. C. per second. Cooling is preferably effected in a circulating fluidized bed reactor (2).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.