大型锅炉煤粉稳燃技术对NOx生成影响的研究

NOx,(,430074)[](),NOx,NOx[];;;NOx[]TK227.1;X511[]A[]100623986(2002)0320001202StudyontheInfluenceofSustainedPowdered-coalCombustionTechnologyonNOxProductinLargeBoilerZENGHan2cai,ZHUQuan2li(HuazhongScienceandTechnologyUniversity,Wuhan430074,China)Abstract:Thesustainedpowered2coalcombustiontechnologyinprimaryairforstraight2flowburnerandcyclonebumer,includingthermalgasrecirculationtechnologyandpowered2coaldensitydeviationtechnology,wasstudiedchiefly.ItsinfluenceonthecombustionandNOxproductinburnerwasdiscussed.ItwasdemonstratedthatthistechnologycanstabilizethecombustionandreducetheNOxprod2uct.Keywords:burner;thermalgasrecirculation;powered2coaldensitydeviation;NOxproduct(WR,,)()(),,,NOx,NOx1NOx104Kös,3050ms,22mös,6601100mm,,O2NOx,60%70%[]2001206201[](19352),,,,,,,,(CHi),NOx(CN)(NHi),NOxN2,;,NOx,,NOx:CH+NON2+CONH+NON2+OHCO+NOCO2+1ö2N2,,NNOx,,NOx:C-NO2C-NOxC+NOxN2+COCO+NOCxN2+CO2,C2N,C2NOxN(75%80%)NOx,NN1Vol.26No.3Jun.200226320026©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,NOxNOx,NOx,,,NOx,,NOxNOx15%,NNOx85%NOx,NOx300MWNOxNOx:O23%,NOx236.6mgöNm3309.04mgöNm3,23.44%;NOx622.7mgöNm3425.66mgöNm3,31.64%;NOx859.3mgöNm3734.7mgöNm3,124.6mgöNm32NOx,,,,:,,,,(),;,,,;,,,,,,,NOx,,NOxN2,,,,NOx,,NOx,NOxNOxNOx,NOx,NOxNOxNOxNOx,,NOxN2NOxNOx,,,NOx,3NOx,2,,,NOxN2,,NOx,113NOxO2ö%öö%NOxömg(Nm3)213.95011431.889033.94811341.568043.89911381.457424NOx,,,,,,,,,,,,,,NOx,,,NOx(10)226320026Vol.26No.3Jun.2002©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,,1PIDö%ösös35351520182512.544,,8,,,,,,,,,[][1].[M].:,2000.[2],.DCS[J].,2001,(10).(2)NOx,,,NOx,,,NOx,22NOxö8öö%NOxömg(Nm3)211.8815884.0168912.1615722.3659982.4315652.0651067,,,,NOx,NOxNOxNOx,33NOxöö%NOxömg(Nm3)211.015653.1061178.992.5715702.0951059.565.2515722.365998.06,NOx,NOx,,(W2-W1),,NOx;,NOx5,NOxNOx,,NOx,NOx,NOxNOx,,NOx;,,,;,,,,,NOxNOx0126320026Vol.26No.3Jun.2002©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.