METHOD FOR REDUCING NITROGEN OXIDES IN THE EXHAUST GAS OF AN ENTRAINED-FLOW TREATMENT PLANT

Disclosed is a method for reducing nitrogen oxides in the exhaust gas of an entrained-flow treatment plant in which a material is subjected to a thermal treatment; at least some of the thermal energy used for said treatment is supplied by a hot gas generator (3). The disclosed method is characterize...

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Bibliographische Detailangaben
Hauptverfasser:	GRUND, Guido, SCHEFER, Dirk
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS SEPARATION TRANSPORTING TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	Disclosed is a method for reducing nitrogen oxides in the exhaust gas of an entrained-flow treatment plant in which a material is subjected to a thermal treatment; at least some of the thermal energy used for said treatment is supplied by a hot gas generator (3). The disclosed method is characterized in that a reducing agent is admixed to the hot gas from the hot gas generator (3) before the temperature of the hot gas drops to 700°C or less, preferably 850°C or less.