高温低氧燃烧火焰中氮氧化物的估计

NOx Estimation Based on High Temperature Low Oxygen Flame

通过对电站锅炉煤燃烧过程中氮氧化物生成的分析,确定与氮氧化物生成量密切相关的锅炉运行参数。使用燃烧火焰图像处理技术和双色高温测量法,得到炉膛温度场变量。将锅炉运行参数和温度场变量联合构建一个输入数据矩阵,利用偏最小二乘法对锅炉运行过程中的氮氧化物排放量进行估计,并同实测值进行对比。分析结果表明:该种方法可以用于在线实时监测氮氧化物的排放量。

By the analysis of the generation NOx during coal combustion inutility in utility boilers, the boilers function parameters related with generation NOx quantity are determinate. The temperature distribution variable is gained by using combustion flame image processing technique and two - color flame monitoring system inversion measurement. The boilers function parameters and the temperature distribution variable are combined to construct a input data matrix, using least square method to estimate the output NOx quantity during boilers running, and compared it to practical value. The analysis results show that the method can be used to predict the output pollutant real time.