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©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:2006-09-20:(40672098);(2006ABC002):(1981-),,,1:1001-2060(2007)03-0292-05,,,(,430074):XX-,,:,,;,,:,;,:;;;XRD;:TK223.23:A,,,,[1],,,,,NOxNOx,,,[1],199115.35%,,,,,,,11.1,,,,,,X(XRD)X(XRF)-(FSEM-EDX)1.2:Axiovert200MAT,501000,XRD:XPertPROX10.00080.000[2Th.],0.033[2Th.],:Cu,:40mA,40kVXRF:EDAXInc.EAGLEIIIXX40kV,1.0mA,NaU,10-6100%FSEM-EDX:EDAXInc.GENESISFEISirion200:ASAP2000,175000!22.122320075JOURNALOFENGINEERINGFORTHERMALENERGYANDPOWERVol.22,No.3May,2007©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.(%)/kJkg-1CarHarOarNarSarMarMadAarVdafQnet,ar50.772.763.930.582.987.151.0331.8323.45195072(%)Fe2O3SO3SiO2Al2O3CaOK2OMgO36.3750.626.055.160.360.231.2134.0747.059.817.010.780.550.7332.3139.6215.789.831.250.760.452.2X1:,,;:,74%64%54%;1XRD,22%28%;26%,,,14%18%,,,2.32.3.1(2):,,,,,,;,,,3923,:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.!,1500!,;,S2-232.3.2SEM-EDX,(4),:,,;,,;;,,,:H2S,,,,,,,,4,,,,,,55(a);5(b);5(c)(1250),6,5SEM4922007©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.[S],2.4.1:1.00,,H2S75%[7],CO/(CO+CO2)8%24%,H2S0.02%0.07%,H2S,300,;300500,,50,[1],Fe2O3(Fe2O3FeO)FeOFe,,:H2S+FeFeS+H2(1)H2S+FeOFeS+H2O(2)2.4.2[S],350400(Fe+[S]FeS),450,:(1)FeS2:FeS2FeS+[S](3)(2):2H2S+SO22H2O+3[S](4)(3):2H2S+O22H2O+2[S](5)(4)FeS2[9]:3FeS2+12C+8O2Fe3O4+12CO+6[S](6)(5)[10]:H2SS+H2(7)[S],,,;,2.54.0,,,1195,,1000,5923,:©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:3FeS+5O2Fe3O4+3SO2(8)SO2,2775,[1][4,89]:(),(),,,,,,[2,4,89]3XRDXRF-,:(1);(2),,;;500!,1500!;(3);,;(4):,;:[1].[M]1:,19951[2],,1[J]1,2000,15(2):173-1741[3]1[J]1,2003,23(2):183-1871[4],,,1DG1025[J]1,2003,23(11):211-2141[5]MAYORALMC,ANDRSJM,BELZUNCEJ,etal1Studyofsulphida2tionandchlorinationonoxidizedSS310andplasma2sprayedNi2Crcoat2ingsassimulationofhotcorrosioninfoulingandslaggingincombustion[J]1CorrosionScience,2006,48(6):1319-13361[6]BRYERSRICHARDW1Firesideslagging,fouling,andhigh2tempera2turecorrosionofheat2transfersurfaceduetoimpuritiesinsteam2raisingfuels[J]1ProgEnergyCombustSci,1996,22:29-1201[7],,,1[J]1,2003,32(4):367-3701[8].[J]1,2000,21(2):17-201[9],.[J]1,2002,22(2):1700-17041[10],.[J]1,2004,16(6):385-3881()20054,/(),(),,,,-60()6922007©1994-2010ChinaAcademicJournalElectronicPublishingHouse.Allrightsreserved.:flamelesscombustionatanormalairtemperature,coal2firedboilerbeingconvertedtoburngas,highefficiency,reductionofemissions=AnInvestigationoftheNon2uniformityofTransversalAirDistributionforaChainGrateStoker[,]/CHANGBin,YUYa2hui,JIJun2jie,etal(ThermalEnergyEngineeringResearchInsti2tuteundertheShanghaiJiaotongUniversity,Shanghai,China,PostCode:200240)//JournalofEngineeringforTher2malEnergy&Power.-2007,22(3).-288291Thenon2uniformityoftransversalairdistributioninachaingratestokercanseriouslyaffectthestokerefficiency.Tosolvethisproblem,realstokercold2statetestshavebeenperformedoftheairsupplysystemofa20t/hchaingratestokerin7operatingregimes.Thetestresultsshowthattheunsatisfactorylateralsealofthegrateandairdamperdeformationarethemaincausesleadingtothenon2uniformityofairdistribution.Withtheactuallymeasureddataservingasboundarycondi2tions,anumericalsimulationwasconductedofairflowinasinglewindboxbyemployingak-turbulencemodel.Ithasbeenfoundthatthediffusion2flowpressuredropandaconversionfromakineticpressuretoastaticoneaswellasaturbulenceperturbationinthewindboxcancausethenon2uniformityoftransversalairdistribution.Inthelightofthere2spectivemeritsoflarge2air2boxandsmall2air2funnelairsupplysystemdevelopedinChinaandunderfeedairsupplymodeofforeign2madeincinerators,proposedwasanairsupplysystemincorporatinganunderfeedlarge2air2boxandsmall2air2funnel.Anumericalsimulationoftheabovetwokindsofairsupplysystemindicatesthattheimprovedairsupplysystemcaneffectivelyenhancetheuniformityoftransversalairdistribution.Keywords:chaingratestoker,coldstatetest,transversalairdistribution,numericalsimulation=AStudyofHigh2temperatureCorrosionCharacteristicsofCoal2firedU2tilityBoilers[,]/GAOQuan,ZHANGJun2ying,QIUJi2hua,etal(NationalKeyLaboratoryonCoalCombustionundertheCentralChinaUniversityofScienceandTechnology,Wuhan,China,PostCode:430074)//JournalofEngi2neeringforThermalEnergy&Power.-2007,22(3).-292296Byadoptingavarietyofmicroscopicanalyticmethods,suchasmetallographicmicroscopeandX2raydiffractionanalysis,X2rayfluorescentprobeanalysis,electronicmicroscope2energyspectrumanalysisbyfieldemissionscanningandaperturetestingetc.,asystematicanalysiswasconductedforthecorrosionproductsofthewaterwallofacoal2firedutilityboiler.Theresultsoftheanalysisshowthatthecorrosionproductsassumealaminarstructur