四角切向燃烧锅炉煤粉射流逆向稳燃技术的研究开发

970012X33(),No13,,,,,,:,,,ResearchandDevelopmentonStabilizingPulverizedCoalCombustionTechnologybyCounter-OffsettingPrimaryAirandCoalStreamsforT-FiredBoilersZhaoZongrangZhangMingchuan(ThermalPowerResearchInstitute)AbstractThedesignconceptforstabilizingpulverizedcoalcombustiontechnologybycounter2offsettingprimaryairandcoalstreamsforT2firedboilerswasfirstpresentedandanalysisedinthispaper.Basedonthenumericalmodelingofthreedimensionalturbulenceflowinfurnace,burnerretrofittingforunit3atJiaozuopowerplantwereoptimized.Computationalresultsandpost2retrofittedfieldtestsconfirmedthatthestabilizingcombustiontechnologybycounter2offsettingprimaryairandcoalstreamscouldsignificantlyincreasetheresidencetimeofcoalparticlesinthe3(1997)1JOURNALOFCOMBUSTIONSCIENCEANDTECHNOLOGYVol.3(1997)No.1X71003233©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.earlystagesofcombustion,thereforeimprovedignitionconditions,anditalsocouldeffectivelyalleviatetheremainedswirlatfurnaceoutlettoreducefluegasimbalance,aswellaschangetangentialtrajectoryofcoalparticlestoreducetheslaggingandhightemperaturecorrosionpotentialalongfurnacewaterwallsnearburnerzones.Keywords:T2firedtechnology,Flamestabilizitiontechnology,Fluegastemperatureimblance,Fluidflowfield,,,,,No13,,,,,,No13,,No13,8%50%60%,112%4.5%;;15070,1,,,,,,,,,,,,,,,,,(),(),B,19819972:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1A;B;!;,,(),,,,,,,,,,,2No.3No13HG2670ö140210,11166m11.66m,5800mm4,44,015,,10No13,,No13,,199311No13,(1),B2,,,B4,1ö53k2E,,5:0931©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.55x(QU5)+55y(QV5)+55z(QW5)=55xLeR5555x+55yLeR5555y+55zLeR5555z+S5(1)5S5115R5S51.00UU1.0-5p5x+55x(Le5U5x)+55y(Le5V5x)+55z(Le5W5x)VV1.0-5p5y+55x(Le5U5y)+55y(Le5V5y)+55z(Le5W5y)WW1.0-5p5z+55x(Le5U5z)+55y(Le5V5z)+55z(Le5W5z)kk1.0Gk-QEEE1.22Ek(C1Gk-C2QE)Gk=Le{2[(5U5x)2+(5V5y)2+(5W5z)2]+(5U5y+5V5x)2+(5U5z+5W5x)2+(5W5y+5V5z)2}CL=0.09,C1=1.44,C2=1.92Le:Le=Lt+Ll(2)Lt=CLQk2öE(3):Lt;Ll,,,:SX=KC1ö4Lk1ö2upQln(EC1ö4Lk1ö2QypöLl)(4):E,9.97;KVonKarman,0.42;upP;ypPk,Ekw=Swö(QC1ö2L)(5)EX=C3ö4Lk3ö2ö(Kyp)(6),,SIMPLER,31919972:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.No13,161532,5004No13,,,26,7(a)(b)3,,,2931©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,(3)(5),(6),7mös(7),15mös,0135s(a)(b)5(2),,,3919972:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.3,,,,,,(7),,15mös615mös,0135s0180s,1,6,,,7mös2mös7,,,(a)(b)74931©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.55.1No13,50%(100MW,1)60%(120MW,2)37182%8.11%,()5,120MW1547,100MW1466,,,,8%50%60%5.2No13,36,,8a,;8b4,8,,7001050,350,(a)()(b)48()5.3,,45=2056mm,94,20,15070,No135919972:©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(a)()(b)49()()()6,,(1),,,No138%50%60%,112%415%(2),No1315070,(3),,,,No13,11:[]1:,19902112HonneryDR,KentJH.FurnaceFlowModelling,PhysicalandComputational.JournaloftheInstituteofEn2ergy,19892093PatankarSV,11:,198416931©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.