介绍了在0.5MW半工业试验台上,用空气燃烧技术,进行降低NO_2排放的试验结果。试验采用2种烟煤和以竹屑为主的植物燃料,主要讨论了燃炉内空气分级条件下的火焰烟气特性,出口烟气表现出氧化性和还原性并存的状态,氧化区产生的NO_2被氧化区处围的还原区还原成N_2。试验表明,分级燃烧技术能够很好地降低NO_2的排放。 Introduced the 0.5MW semi-industrial test stand, the use of air combustion technology to reduce NOx emissions test results. Two types of bituminous coal and plant fuels dominated by bamboo dust were used in the experiment. The characteristics of flame and flue gas under the air classification in the furnace were mainly discussed. The export flue gas showed both coexistence of oxidation and reduction. NO2 Reduction zone surrounded by the oxidation zone is reduced to N_2. Experiments show that staged combustion technology can reduce NO 2 emission well.