增压流化床N_2O和NO排放特性的试验研究  

N_2O AND NO EMISSIONS FROM PRESSURIZED FLUIDIZED BED COMBUSTION

作　　者：沈来宏[1] 铃木善三 

机构地区：[1]东南大学热能工程研究所,江苏南京210096 [2]日本资源环境研究所

出　　处：《中国电机工程学报》2001年第4期40-43,共4页Proceedings of the CSEE

基　　金：国家重点基础研究专项经费资助项目! (G19990 2 2 2 0 9)

摘　　要：研究了燃煤增压流化床N2 O和NO的排放特性。在增压燃烧的条件下 ,随着床温的增加 ,N2 O的排放量减少得很快 ;而床温对NO的排放影响很小 ,这一结果与常压下的结果不同。随着过剩空气量的增加 ,N2 O和NO的排放量均增加 ,但N2 O的增幅比NO小。NO的排放量随着压力的增高而有明显的降低 ,在过剩空气系数较低的条件下 ,压力越高 ,NO的降低幅度越显著 ,而N2 O则增加。The effects of various factors on formation and decomposition of N 2O and NO were studied in a coal-fired pressurized fluidized bed combustor, the inner diameter of which was 80 mm. The results indicate that the N 2O emission decreases with the increase of bed temperature, while for NO the change is very little, and shows the difference from that in atmospheric fluidized bed combustion. The decrease of excess air can reduce N 2O and NO emissions, but the effect on N 2O is weak. With the increase of operating pressure, N 2O emission increases, while NO emission can be decreased remarkably.

关 键 词：增压流化床燃烧 二氧化氮 氧化氮 烟气除尘 大气污染物 

分 类 号：X701.2[环境科学与工程—环境工程]