By controlling the area under secondary air to be a reduction zone,the organic amine in the waste liquor turns into NHi,which further reacts with NOx decomposed from HNO 3 to form N 2,leading to the reduction of NO x emission.

• 通过控制二次风以下区段为还原气氛，使己二胺废水中的有机胺转化为NHi，然后它与由硝酸分解产生的NOx反应生成N2，可减少NOx排放量。