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NOx(710032)[]NOx,,NOx[]NOxNOx80,,ABB-CE,300MW600MW300MW,NOx,300MW600MWNOxNOxNOx,1989,,,NOx1NOx,ABB-CE,,,,,,,,,NOxNOx,1970,ABB-CE(OFA)(CFSCFS)NOx(LNCFS)NOx300MW600MW,,,,1.1NOx(OFA)(OFA)70,,419981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,NOx350MW,NOx1.1.1NOx,,15%,,,NOx,NOx,NOx,1.1.2,:(1)(Var=22.8%,Nar=0.8%,Qnet,ar=22.4MJ/kg),1%3%,2%,0.5%,R7520%,R7515%,(2),3.6%,,2.5%,(3)30%BMCR(345t/h),27.8%BM2CR(320t/h),(4)NOx,NOx700mg/m3(),(150200)mg/m3()1.1.3NOx,:(1),,,,(2),15%,,1.0,0.80.9,NOx1.2(CFS)80,NOx,600MW11CFSI1.2.1NOx,25,,519981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,NOx,,OFA,ABB-CE(Wide-rangecoalnozzle),WR90,290,,,60%70%,30%40%,50%,2WR,,,,NOx,,,NOx,,NOx,,NOx,,NOx,NOx1.2.2,,11,,,NOx,630mg/m3(),,,35%BMCR,,V,,,,,,1NOx(MW)600450320,%92.592.5792.89,%93.9794.5594.23NOx,mg/m36304904251.3NOx300MW,300MWNOx,OFA+CFSWR,OFA+CFS+WR3,,619981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,31.3.1(CFS)CFSABB-CE19841985,CFS,,,,,,,,,CFS1.3.2NOx(1)WR;(2)OFA;(3)CFS,;(4),1.3.3,:(1)NOx300MW,2.5%(=1.14),93.8%,92.4%,NOx600mg/m3()(2)35.7%BMCR,33.7%BMCR(110MW)(3),1.4NOxABB-CELNCFS,,,300MW(4)1.4.14,LNCFS,:(1)45(),(2)20()(ABCD),719981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.4300MW,,,,,,,,NOx(3)(OFA),OFA,,(4)WR,NOx,OFA()+CFS()+WR,LNCFS1.4.2NOx41,19%23%,0.58%,19MJ/kg,NOx650mg/m3(),200mg/m3()250mg/Nm3()(),PM,2NOx2.1Babcock,NOx,,,NOx,819981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,Babcock&Wilcox350MW,NOx,,300MW4(,),320MW12345678910111252.1.15,,,,,,,,(),,,,,,2.1.2NOx,,,,NOx,,,NOx2.1.3,,,,,:(1)Var=2218%,Nar=0.8%,Qnet,ar=22.4MJ/kg,5%,,93.6%(2)NOxNOx600mg/m3(),NOx,650mg/m3(),400mg/m3()919981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(3)35%BMCR2.2Babcock330MW,,(6):6Babcock(1),(2),(3),(4)4%(5),();(3)(4);(5),2.3PAX(Primaryairexchange)Babcock,(PAX)PAX:,(90%),10%50%,50%,,,78WPAX,:0119981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.7PAX8PAX(1),,(2),,,,,,,NOx(3),,,NOx,Vdaf=16.7%,Qnet,ar=23.8MJ/kg,NOx(12001500)mg/m3(),,,200MW380,,,,,,80NOx,,,300MW600MWNOx,200020%30%,NOx,200NOx200MW300MWNOx,,1983,,1119981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.THERMALPOWERGENERATIONNo.1January1998ContentsAPPLICATIONANDOPERATIONOFLOWNOxBURNERSINCHINESEUTILITYBOILERSBiYusen(2)ThispaperbrieflydescribesthestructuralfeaturesofvarioustypesoflowNOxburners,whichhavefoundapplicationinChineseutilityboilers.Onthebasisofmeasurement,theoperationbehaviorsofthoseburnersaregivenregardingNOxemission,thermalefficiencyandcombustionstabilityatlowloadoperation.STUDYANDOPTIMIZATIONOFVENTURIUSEDFORLARGEAIRFLOWMEA2SUREMENTINPOWERPLANT.CaiJiyonetal(10)AnanalysiswasmadeonthekeyparametersaffectingtheVenturiperformance,suchas-contractionrate,1-contrationangle,2-expansionangle.Basedondesignoptimizationandsomecoldmodelexperiments,optimumstructureparametersforthedoubleonesandtherelationshipbetweenflowrate(velocity)andpressuredifferencewereobtained.STUDYONCOMPUTERAIDEDTEST(CAT)OFCOLDAERODYNAMICFIELDOFTANGENTIALCOALFIREDBOILERFURNACESunPingetal(17)Someprogresseshavebeenmadeinthenumericalsimulationofaerodynamicsfortangentialfiredboilerfurnace.AQUICKEschemeisintroducedtoavoidfalsediffusion.Atthesametime,thecombinatedconceptofmulti-voidageanddistributedresistanceisusedtodealwiththesimulationofheatingsurfaceinfurnace.Bycomparisonwithcoldmodeltestresults,thenumericalapproachisidentifiedandthenappliedtoanalysisofabnormaloperation.OPERATIONPERFORMANCEOFBOILERS1AND2INLIGANGPOWERPLANTYangXun(23)Boilers1and2inLiGangPowerPlantarethelargestboilerswithfrontwallfiringsysteminChina.Ascomparedwiththeboilerofotherfiringarrangement,theyhavesomeparticularbehaviors.Basedonthetestofthesetwoboilers,thepapersummarizestheiroperatingperformanceanddefects.STUDYONLASTSTAGESBLADESVIBRATIONBEHAVIOURSOFA200MWTUR2BINEUNITWITHDRYCOOLINGWangZhongboetal(32)Describedinthispaperison-sitemeasurementofthedynamicfrequencyandstressof710mmlonglaststagebladesbyus2ingarediotelemetricdeviceontheoperatingturbine,andtheresultswereanalysedaswell.Thevibrationbehavioursofthemeasuredbladesareofsignificanceforreliableoperationofturbineunits.APPLICATIONANDMODIFICATIONOFINDIRECTDRYCOOLINGSYSTEMWITHSURFACECONDENSERINFOSSIL-FIREDPOWERPLANTS.WangPeizhangetal(36)8619981©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.