公开(公告)号：EP0996494A1

公开(公告)日：2000-05-03

申请号：EP98935017.8

申请日：1998-07-03

申请人： Metallgesellschaft Aktiengesellschaft

发明人： SAMANT, Gurudas ,  HERDEN, Hansjörg ,  MAYER-SCHWINNING, Gernot

IPC分类号： B01D53/86 ,  B01J29/24

CPC分类号： B01D53/8628 ,  B01D2258/0233 ,  B01J29/00

摘要： According to the inventive method for catalytic reduction of nitric oxides contained in the oxygen-containing flue gas from combustion facilities, ammoniac is added to flue gas at a temperature of 150° to 950 °C. Said flue gas goes across a reaction chamber in which the catalyst used is natural zeolite, suspended with a catalytically active substance. In order to improve the catalytic reduction, the catalytically active substance is composed of metallic ions integrated to the zeolite lattice by a cation exchange.

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.