Experimental Study on NO Emission Concentration of Pulverized Coal in Different Atmosphere

3rd International Conference on Advances in Energy Resources and Environment Engineering

能源学;生态环境科学

Song, Jinghui^1 ; Yuan, Hui^2 ; Deng, Jianhua^1

Guangdong Electric Power Research Institute Energy Technologies Ltd., Guangzhou

510080, China^1

North China Electric Power University, Baoding Hebei

071000, China^2

关键词: CO2 concentration;    Excess air coefficient;    Furnace tests;    NO emissions;    No productions;    Pulverized coal combustion;    Pulverized coals;    Single coals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/113/1/012091/pdf
DOI  :  10.1088/1755-1315/113/1/012091

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The NO emission of pulverized coal during combustion in the O2/N2atmosphere and O2/CO2atmosphere was studied by using the sedimentation furnace test bed. The effects of CO2concentration, temperature and excess air concentration on the NO emission characteristics of single coal and mixed coal The results show that the NO content of the pulverized coal is lower than that of the O2/N2combustion atmosphere, and the decrease of the NO content in the O2/CO2atmosphere is about 30%∼35%. When the CO2concentration changes from 20% to 50% of the process, the amount of NO produced in the selected coal gradually decreased, the change range is not large; with the pulverized coal combustion temperature continues to rise, the selected coal in the two kinds of atmosphere combustion NO content increased And the NO emission concentration is more obvious in the O2/N2atmosphere. When the temperature reaches 1200C and 1500C the slope of the NO emission curve can be found to vary greatly. With the increase of the excess air coefficient α Increase, in these two atmosphere NO production also showed a rising trend.