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191Vol.19No.120031PowerSystemEngineeringJan.,20031005006X(2003)01004403TK224.95AApplicationofMulti-TangentialFiringTechnologytoSettlingtheHighTemperatureCorrosionofWaterWallTubeofBoilerZHAOHong,WUChao-yi,HUANGWan-li,DINGJun-long,WENGShan-yong,etal.Abstract:Basedontheoreticalandpracticalexperience,themainreasonsofthehightemperaturecorrosionareanalyzed.Theconcretemeasuresforpreventingandsettlinghightemperaturecorrosionarereasonableairdistribution,adjustingburningandmanagingair-dynamicfields.Theapplicationofmulti-tangentialfiringtechnologytosettlingthehightemperaturecorrosionofwaterwalltubeofboilerisintroducedindetail.Keywords:multi-tangentialfiringtechnology;boiler;waterwalltube;hightemperaturecorrosion300MW300MW199115.35%1#4SG-420/140-M415198419881020199726122.1:2002-05-231961-,,,310027M2SO4M2S2O7M2SH2S12.1.1K2ON2OSO3M2SO4M2O+SO3=M2SO43M2SO4+Fe2O3+3SO3=2M3Fe(SO4)32.1.2H2S2H2S+SO2=3S+2H2O145Fe+S=FeSFeS2.22.2.1(1)(2)COH2H2S2.2.2H2SSO2SO3Fe2O32.2.3H2S300503504202.2.4Sar3%400450H2S300CO0.9%4.9%H2S0.01%2.3#42.3.111Mad/%Aad/%Vad/%FCad/%2.4328.2819.4149.88Cad/%Had/%Oad/%Nad/%Sad/%Qnet,ar/Jg-158.623.355.661.040.62233541Sad0.62%Vad19.41%#4#42.3.222#4#4O2/%CO/ppmSO2/ppmH2S/mgNm-3H2/%CH4/%CO2/%#117.654070.570.000.002.19#20.35500063621.244.970.0013.60#315.89401480.80.020.004.34#41.04800010472.144.570.0113.80#41.010000-3.071.360.0315.77#417.6%15.8%COH2S0.3%1.0%CO55000ppm48000ppm#2H2S21.24mg/Nm3#42.14mg/Nm3#2#4COH2SSO2H2S#4COH2S#4#4SO2#2SO2#4H2S#4#44620031933.13.22200mm800mm3200mm400mm800mm3.3#4ØØ#1#3ØØ17230.630.50.678.7m/s1733O25%H2SCO#43#4O2/%CO2/%SO2/ppmCO/ppmH2S/mgNm-3#120.902615#119.71.162050.23#28.011.80142716.3#212.67.6168299318.2#319.71.13611712.9#45.414.112828561.8#44[1],,.[M].:,1987.[2].[M].:,1994.