600MW超临界直流锅炉的燃烧调整试验

27420078JournalofPowerEngineeringVol.27No.4Aug.2007:100026761(2007)042502205600MW1,2,1(1.,710049;2.,200245):600MWSOFACCOFANOx600MW,:3.2%;850900Pa;SOFA34;CCOFA2;8.5kPa;ABCEF;,:;600MW;;:TK227.1:ACombustionAdjustmentofa600MWSupercriticalOnce2throughBoilerYANGZhen1,ZHUANGEn2ru2,CAOZi2dong1(1.XianJiaotongUniversity,Xian710049,China;2.ShanghaiBoilerWorksCo.Ltd.,Shanghai200245,China)Abstract:A600MWsupercriticalonce2throughboiler,withspirally2woundtubes,hasbeensubjectedtoexperimentalresearchconcerningtheeffectsofthefollwingvaryingfactorsontheboilersefficiencyandNOxemission,namely:oxygencontentattheeconomizersexit,pressuredifferencebetweenwindboxandfurnace,differentconbinationsofSOFAandCCOFAairsupplyaswellasofthecoalmills,finenessofthepulverizedcoalandopeningoftheoffsetsecondaryairdamper.Accordingtotestresults,itwasfoundthat,incaseShenhuacoalisfiredbythe600MWboiler,relativelyreasonableoperationrequirementsare:3.2%oxygencontentateconomizersexit;pressuredifferencebetweenwindboxandfurnacekeptatabout850900Pa;34storiesofSOFAand2storiesofCCOFAairdampersputinservice;pressureofprimaryairkeptatabout8.5kPa.ItisfurtherrecommandedthatgroupoperationmodesoftheABCEFmillsbeused,thesecondaryairportsshouldbeopeneduniformslyandallairportadjustmentssetinaccordancewithsteamtemperaturedeviations.Keywords:energyandpowerengineering;600MWsupercriticalboiler;combustionadjustment;experimentalstudy:2006212225:,,,,1600MW5,,,2111600MWFig1Lay2outofthe600MWsupercriticalboiler18816mm,17696mm,,;1Tab.1MaindesignparametersoftheboilerBMCRECRPth-119131822PMPa25.425.3P571571PPth-11584.41513.6P569569PMPa4.194.18P312306PMPa4.384.00P282279,6HP10031NOx(LNCFS),6(EI)21,2(CFS),12(CCOFA),1UFA5(SOFA)4,,2600MW,,,:SOFACCOFANOx2.12.1.1600MW,5(BCDEF),,(2)2:O2=2.7%O2=4.5%0.45%,,LNCFS,:3.0%2Fig2Boilerefficiencyvs.O2contentateconomizersoutlet2.1.2600MW,CCOFASOFA,(3)3,3Fig3Boilerefficiencyvs.pressuredifferencebetweenwindboxandfurnace3054,:600MW(612Pa),,2.1.3SOFA600MW,CCOFA,SOFA(4)4:SOFA30%100%,,,SOFA15%28%,SOFA,,0.2%,0.15%4SOFAFig4Boilerefficiencyvs.SOFAairflowvariation2.1.4CCOFA600MW,SOFA,CCOFACCOFA,0.16%;CCOFA2,4:CCOFA,,CCOFA,5Fig5Boilerefficiencyvs.differentmillgroupings2.1.5600MW,SOFACCOFA,(5)53,ABCEF,EFABC22,2.1.6600MW,SOFACCOFA,(6)6:BCE1(0910,),D3,F2,;CDE3,BF5,BCE1D3F20.31%,6Fig6Boilerefficiencyvs.changesinportopeningatmillsexit2.1.7600MW,SOFACCOFA,(7)7:,,,,7Fig7Changesintheoffsetsecondaryairdampersopeningvs.boilersthermalefficiency2.2NOx2.2.1NOx600MW,BCDEF5,,(8)8:,O2=2.5%NOx200mgPm3,O23.3%40527,NOx228mgPm3;O24%,NOx232mgPm3;3.3%NOx;,,NOx8NOxFig8RelationshipbetweenNOxemissionandO2contentateconomizersoutlet2.2.2NOx600MW,3%,BCDEF5,32%,CCOFA,SOFA4100%(9)9:,600Pa,NOx208mgPm3;750Pa,NOx198mgPm3;900Pa,NOx202mgPm3NOx5%,NOx,750Pa,NOx9NOxFig9NOxemissionvs.pressuredifferencebetweenwindboxandfurnace2.2.3SOFANOx600MW,3%,1000Pa,BCDEF5,32%(10)10:SOFA2,NOx250mgPm3;3,NOx210mgPm3;5,NOx153mgPm3SOFA,,,NOx10SOFANOxFig10NOxemissionvs.SOFAairbafflesopening2.2.4CCOFANOx600MW,,BCDEF5,SOFA5,32%(11)11:CCOFA,NOx230mgPm3,12,NOx150170mgPm311CCOFANOxFig11NOxemissionvs.CCOFAairbafflesopening2.2.5NOx600MW,SOFACCOFA,(12)12:5NOx,236mgPm3,BCDEF5NOx202mgPm3,32NOx188mgPm312NOxFig12Noxemissionvs.differentmillgroupingmodes2.2.6NOx600MW,SOFACCOFA,(13)13:BC1,D3,E5,F5054,:600MW2,NOx216mgPm3,BCDEF3208mgPm3,CDE3,BF5197mgPm3;,NOx,NOx13NOxFig13NOxemissionvs.finenessofpulverizedcoal2.2.7NOx600MW,SOFACCOFA,(14)14:BCDEF5,SOFA3,30%,,,NOx27%55%,NOx250mgPm3215mgPm3NOx14NOxFig14NOxemissionvs.changesinoffsetsecondaryairbafflesopening3600MW,LNCFS,NOx,(1)2.7%3.3%,,0.05%,NOx202mgPm3229mgPm3;3.3%4.4%,,:600MW,3.2%(2)600MWNOx(LNCFSTM)NOxSOFA,,,,,850900Pa(3)SOFANOxSOFA35,NOx208mgPm3159mgPm3;600MWLNCFS,SOFANOx,(4)600MW,NOx(LNCFSTM),CCOFA,,20%NOx;(5)600MW,,,NOx,5,(6),HP1003,,,,4,(7)NOx(LNCFSTM),,NOx,NOx;;,NOx50%,NOx(521)60527,6,75tPh,,,,,,50%BMCR3.5NOxNOx44NOxTab.4NOxemissionT01T06T07AP%5.216.766.58ANOP10-6362257323BP%5.076.516.12BNOP10-6386262320(6%O2)NOPmgm-3473362440NOx(NO2)Pmgm-37265566754,(80100)%BMCRNOx(650mgPm3,),NOx150300mgPm3[4],NOx,20%,NOx,4(1)6,(2)2.5%,,,2.5%,91.5%,,2.5%(3):,,,NOx,:[1].[J].,2001,48(1):46-47.[2],.[M].:,1998.[3].[M].:,1994.[4],,.NOx[J].,2005,36(5):32-35.(506):[1],.1913tPh[R].20064.[2],,.1913tPh[R].20064[3],,.[R].1994(5).[4],[M].:,2002.[5],.NOx[J].,2002(1).[6],,.NOx[J].,2001(1).1254,: