Treatment of process gases containing halogenous compounds

Details Treatment of process gases containing halogenous compounds Treatment of process gases containing halogenous compounds

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F23G 5/44 (2006.01) F23G 5/00 (2006.01) F23G 5/30 (2006.01) F23G 5/46 (2006.01) F23G 7/00 (2006.01) F23J 15/06 (2006.01)

Patent

CA 2057873

The present invention relates to a method of treating various chlo- rine-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°C and of cooling the resultant process gasesfor minimizing the amount of polyhalogenated aromatic compounds in the process gases. The process gases are cooled to a temperature below 250°C at a cooling velocity exceeding 1000°C per second. Cooling is preferably ef- fected in a circulating fluidized bed reactor (2).

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