Method and device for catalytically treating exhaust gas...

Details Method and device for catalytically treating exhaust gas... Method and device for catalytically treating exhaust gas...

B - Operations, Transporting

01

D

B01D 53/86 (2006.01) B01D 53/50 (2006.01) F23J 15/00 (2006.01)

Patent

CA 2391710

The invention relates to a method and a device for catalytically treating exhaust gas containing sulphur oxide and nitrogen oxides, dust and oxygen and emanating from chemical processes or the combustion of fossil secondary fuels or fossil fuels from power plants, such as waste or slurry, or from glass and cement works. The exhaust gas is freed from sulphur oxides and nitrogen oxides in a reactor having a solid catalyst and at a temperature ranging from 200 °C to 500 °C and in the presence of and/or by adding one or more mediums selected from free oxides, carbonates and hydroxides of calcium, magnesium, sodium and potassium.

L'invention concerne un procédé et un dispositif pour le traitement catalytique d'effluents gazeux contenant des oxydes de soufre et d'azote et également de la poussière et de l'oxygène résultant de processus chimiques ou de la combustion de combustibles fossiles par exemple de combustibles de centrales ou secondaires, tels que des ordures ou des boues résiduaires, ou bien provenant d'usines de production de verre ou de ciment. Selon ledit procédé, les effluents gazeux sont libérés de leurs oxydes de soufre et d'azote en présence et/ou avec addition d'au moins une substance sélectionnée parmi les oxydes libres, les carbonates et les hydroxydes de calcium, magnésium, sodium et potassium, dans un réacteur comportant un catalyseur solide, à une température comprise dans la plage 200 DEG C - 500 DEG C.

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