大容量煤粉燃烧锅炉炉膛特征参数探讨

,(,710032)[],300600MW,,,,W,[];;W;;;;[]TK229.6[]A[]1002-3364(2001)06-0013-06300600MW(BMCR),10252008t/h,7901550MW()[14],,,W3,1,R90:R90=0.55Vdaf+(04)%(1):Vdaf,%,,;,,NOx,R90=0.55Vdaf,Cfa300600MW(BRL)CfaVdaf1,CfaCfa-Vdaf,-,,1Cfa1,2001(6)lx©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.AarCfa1CfaVdaf(BRL)Vdaf/%51010151520203030Cfa/%124836.52513.50.522.1qv,,qv:qv=PthV103kW/m3(2)V,m3;Pth,Pth=B1-LUBC100Qnet,arMW(3)BBMCR,kg/s;Qnet,ar,MJ/kg;LUBC,:LUBC=33.7AarQnet,arCfa100-Cfa%(4)V(),(2),qvBMCR,,qv(BMCR)BMCRPth,qv(BMCR)Vqv(BMCR),,,1,qv,,,(),qv(BMCR)2.21202Cfa(BRL)=f(Vdaf),Cfa;qv(BMCR);3500m,qv,[5],2300600MW2,Vdaf2,(Vdaf25%)(Vdaf20%)(1)(Vdaf25%),300MWqv(BMCR)95110kW/m3,,,qv99kW/m3100kW/m3,(15002000m)qv(BMCR)82kW/m389kW/m3,,600MWqv(BMCR)85100kW/m3ly2001(6)©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.(2)(Vdaf20%),300MW,,qv(BM2CR),Cfaqv(BMCR)=109kW/m3,Cfa,350m2,6300MWqv(BMCR)85100kW/m3600MW,qv(BMCR)300MW2.3300600MW,10Cfa(BRL)qv(BMCR)3Cfa=f(Vdaf),3,,qv(BMCR),qv(BMCR)qv(BMCR)=119kW/m3(,qv=109kW/m3),Cfa3300600MW,,6%10%2.4W410,300360MW,Vdaf14%,Cfa;Vdaf12%,Cfa,qv(BMCR)4300360MW4,Cfa2,qv(BMCR)98kW/m3106kW/m3,,,qv(BMCR)=91kW/m3VdafD12%4,qv(BMCR),qv(BMCR)=110kW/m3Vdaf10%,,(Vdaf=8%9%)4(qv=95kW/m3,R90D10%),,,qv(BMCR);qv(BMCR),0.520.562.5,qv(BMCR)2001(6)lz©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.2(Vdaf),5qv(BMCR),,,,qv;,qv,,2qv(BMCR)Vdaf/%252014121210108/MW300600300600300300300Wqv(BMCR)/kWm-39510085100100859080100859075(8065):5qv(BMCR)3()qF:qF=(Pth/F)MW/m2(5),Pth(3);F(),m2qF,,3qF(BMCR)6qF=f(Vdaf),300MW2qF(BMCR);600MW2qF(BMCR)VdafqFqF(BMCR)3.6MW/m2,VdafD14%(3qv=79kW/m3),,qF(BMCR),qv(BMCR),,qF(BMCR):300MW,qF(BMCR)4.04.8kW/m2;600MW,qF(BMCR)4.25.0kW/m26300600MW6,qF20.6,2Vdafqv(BMCR),,qF(BMCR)qv(BMCR),300MWW:Vdaf=14%12%,qF(BMCR)3.02.3kW/m2;Vdaf=12%10%,qF(BMCR)2.82.1kW/m2;Vdaf=10%8%,qF(BMCR)2.6l{2001(6)©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.1.9kW/m264()qB:qB=(Pth/FB)MW/m2(6),Pth(3),FB,m2FB=2(W+D)(h2+3)(7)WD;h2()h23m,qB,,qB-qB,7300600MWqB=f(Vdaf)2qB,Vdaf,1.11.8MW/m23qB(BMCR)D1.0MW/m24qB(BMCR)D2.0MW/m2600MW(22);,(),7300600MW,qB(BMCR),1.5MW/m25(,)qmqv,VVm(Vm=Fh1;F,m2;h1,m)Wqm,,,,qmqmh1,h1=qF/qmqm(BMCR)h18,(1)qm(BM2CR)Vdaf,qm(BMCR)200280kW/m3h11721m()1723m()600MWh1300MW12m,qF(BMCR)(6),h1,qmqm(BMCR);VdafD40%,qm(BMCR)350kW/m3(h1D15m),Cfa(BRL)qm(BMCR)150160kW/m3(h130m),Cfa(BRL)(2)300MW,qm(BM2CR)250350kW/m3,22001(6)l|©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.83(h11416m),,Cfa,qv(BMCR),qm26(1)300600MW,qvqFqBqm,(2)3,W2()Var14%12%,300MW,,(Vdaf20%)600MW(3)W,10,(),,,Vdaf12%8%,,[][1].[R].,1999.[2].[R].,1998.[3].[R].,1998.[4].W[R].,1998.[5].[J].,2000,(4).:,,,,()1979,,,()(),,:6/36/:57:450052:0371-7423706:[e-mail]:l}2001(6)©1995-2005TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.THERMALPOWERGENERATION2001.No.6ContentsASTUDYONTHEDESIGNOFDOMESTIC300MWCFBBOILERSSUNXian-binetal(2)Basedonsummarizingavastamountoftestandresearch,designandmanufacture,operatingexperienceandtechnicalrenovation,atechnicalschemehavingself-ownedintellectualpropertyrightfordesigningdomestic300MWCFBboilershasbeendeveloped.Thedesignideas,technicalfeaturesoffurnacetype,thedesignofimportantpartsandauxiliaryequipmentsonboilerislandhavebeenanalyzedanddiscussedindetail,itisexpectedtoprovideanall-roundtechnicalsupportforthedevelopmentandengineeringapplicationoflarge-scaleCFBboilertechnologyindomesticpowerplants.STATUSQUOOFRESEARCHANDDEVELOPMENTINTHEAREAOFANALYSISMETHODSFORPOWERPLANTSTHERMODYNAMICSUSTEMSGUOMin-chen(7)Severalanalysismethodsofthermodynamicsystemsforcoalfiredpowerplantshavebeensummarized,thedomesticdevelopmentprocessinthisareareviewed.Ithasbeenpointedoutthatthethermodynamicsystemanalysishasgonethroughphasessuchasalgebraic,matrix,andmatrixdifferentialcalculationsetc.Andextensionofvariousmethodsfromflow-fixedanalysistopower-fixedanalysishasbeenachievedduringthisperiod.Inaddition,everymethodofsaidsystemanalysisforcoalfiredpowerplantshasprogressivelybeenperfected.THERMOTECHNICALAUTOMATIONANDCOMPUTER-BASEDMONITORINGOFINDUSTRIALCFBBOILERSLIHuietal(10)Basedonthefeaturesofoperationandtheprincipleofregulation,thedesignanddevelopmentcourseofthermotechnicalautomaticsystemforindustrialCFBboilersaredescribed.Frompracticeofengineeringprojects,manydesignprinciples,namelybedtemperaturecontrolofmateriallayer,water-levelcontrolofboilerdrum,steamtemperaturecontrolofsuperheater,loadcontrolofunit,negative-pressurecontrol,oxygencontentcontroloffluegas,quantitycontroloffeed-backmaterial,etc.havebeengiven.ANAPPROACHTOFURNACECHARACTERISTICPARAMETERSOFLARGEPULVERIXED-COALFIREDBOILERSYUANYingetal(13)Throughstatisticalanalysis,anapproachtocombustionefficiencyof300-600MWboilersexistingnowinoperationandtheirfurnacethermalcharacteristicparametersun2derdifferentcombustionmodeshasbeenmade,puttingforwardsomereferenceparametersfordesignandmode-selectionoffurnacehearthinthefuture.Itisfeltthatthefurnacevolumeheatreleaserateusedinpresentdesignsiscom