公开(公告)号：EP0906148A1

公开(公告)日：1999-04-07

申请号：EP97928147.0

申请日：1997-06-05

申请人： Metallgesellschaft Aktiengesellschaft

发明人： BEISSWENGER, Hans ,  HASSELWANDER, Klaus ,  HERDEN, Hansjörg ,  MAYER-SCHWINNING, Gernot ,  SAMANT, Gurudas ,  LUDWIG, Peter

IPC分类号： B01D53 ,  C03B5 ,  G05D11

CPC分类号： B01D53/346 ,  B01D53/56 ,  C03B5/235 ,  G05D11/138 ,  Y10S65/13 ,  Y10S422/90

摘要： A process for regulating or controlling the NOx content of exhaust gases generated during the operation of glass furnaces with several alternately-run burners. In the process, both the beginning FP+ and the end FP- of a firing break are taken to a binary signal generator (8) which transmits the signals to the regulator (4) with a time delay. On receiving the delayed signal FP¿z?+, the control by the regulator (4) is interrupted and the quantity of NH¿3? set to a lower constant fixed value F1 via a control system. A higher constant fixed value F2 is calculated by a store component (7) as the quantity of NH3 and also transmitted to the regulator (4). As soon as the regulator (4) has received the signal of the delayed end of a firing break FPz?-¿, the fixed value F1 is set to the fixed value F2 via a control system and then regulation is continued directly.