Metallgesellschaft Aktiengesellschaft

Klaus Hasselwander

Hans Beisswenger

Gernot Mayer-Schwinning

Gurudas Samant

Hansj&ouml;rg Herden

Peter Ludwig

A method for regulating or controlling the content of NO,in the exhaust gases of a glass-melting furnace having several burners operated in alternation, wherein both the beginning and the end of a combustion break (FP,, FP,) are supplied to a binary signal generator (,) which passes a signal to a regulator (,) with a time delay and upon receipt of the time-regulator (,), and the amount of NH,supplied to the denitrating plant is adjusted to a lower constant fixed value F,via a control, and by means of a memory element (,) a higher constant fixed value F,is calculated as amount of NH,and supplied to the regulator (,), whereupon as soon as the regulator (,) has received the signal of the time-delayed end of a combustion break, the fixed value F,is adjusted to the fixed value F,via a control, and subsequently the regulation is directly continued.

Process for the regulating or controlling the NOx content of exhaust gases given off during the operating of glass melting furnaces with several burners run alternately

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Oberusel, Germany

Klaus Hasselwander