机械加煤锅炉的烟气再循环燃烧,是把从炉内抽出的部分烟气,送入鼓风系统的空气中,形成烟气的再循环。这样有如下优点:1)减少了50%的过剩空气量,防止了火床结焦。从而实现锅炉的稳定运行,既降低氧化氮(NO_x)的排放量又节省了能源。2)使排出气体的粉尘排放量和排烟浓度降低了33%以上。 Mechanical coal-fired boiler flue gas recirculation combustion, is the part of the flue gas extracted from the furnace, into the air blast system, the formation of flue gas recycling. This has the following advantages: 1) Reduce the amount of excess air 50%, to prevent the fire bed coking. In order to achieve the stable operation of the boiler, it not only reduces the amount of nitrogen oxide (NOx) emissions but also saves energy. 2) Reduce dust emission and smoke density of the exhaust gas by more than 33%.