CAJ | 학술논문

通过对某电厂660MW超超临界锅炉的研究，在改变锅炉负荷、运行氧量、 SOFA风量和配风方式等情况下，测定锅炉脱硝入口处NOx 排放浓度，分析燃烧调整对NOx排放的影响。通过研究表明：在额定负荷运行时，氧量3.0％时， NOx 排放最低；中负荷500MW运行时，氧量3.3％时， NOx 排放最低。燃烧试验煤种时，当煤粉细度R90降低到25％时， NOx 排放降低了4.2％；降低一次风量可以使NOx 的排放降低；在额定负荷下，缩腰型配风方式NOx排放最低。
통과대모전엄660MW초초림계과로적연구，재개변과로부하、운행양량、 SOFA풍량화배풍방식등정황하，측정과로탈초입구처NOx 배방농도，분석연소조정대NOx배방적영향。통과연구표명：재액정부하운행시，양량3.0％시， NOx 배방최저；중부하500MW운행시，양량3.3％시， NOx 배방최저。연소시험매충시，당매분세도R90강저도25％시， NOx 배방강저료4.2％；강저일차풍량가이사NOx 적배방강저；재액정부하하，축요형배풍방식NOx배방최저。
By studying the 660MW ultra supercritical boiler, this paper measures NOx emission concentration at the entrance of boiler denitration, analyzes the effects of combustion adjustment to the NOx emissions with various of boiler load, coefficient of excess air, sofa air and air distribution.The results demonstrate that NOx emissions are minimum under rated load and coefficient of excess air is 3 %.When boiler load turning into 500MW and coeffi-cient of excess air is 3.3%, NOx emissions is the least.According to combustion test of coal, NOx emissions de-cline when R90 is 25%, NOx emissions reduce by 4.2%.The emissions is the least with waist drum air distribution at the rated load.