600MW燃煤电站烟气汞形态转化影响因素分析(7)

600MW超临界机组的一些论文,关于火力发电厂的

　4　　 44 热能动力工程2008年

ablechange.ThepercentageofHg2+willincreasefrom14.71%to39.54%,thatofHg0willdecreasefrom85.19%to60.38%andthatofHgPwilldropfrom0.10%to0.08%.ThechlorineincoalandNOx,SO2,HCl,Cl2inthefluegasassumeapositivecorrelationtotheformationofoxidizedmercuryinthefluegas.Keywords:coal2firedpowerplant,mercurymorphologicaldistribution,fluegas

温度对NO2差分吸收光谱特性影响的实验研究=ExperimentalStudyoftheInfluenceofTemperaturesonNO2DifferentialAbsorptionSpectrumCharacteristics[刊,汉]/SHAOLi2tang,TANGGuang2hua,XUChuan2long,etal(EducationMinistryKeyLaboratoryonCleanCoalPowerGenerationandCombustionTechnology,SoutheastUniversity,Nanjing,China,PostCode:210096)//JournalofEngineeringforThermalEnergy&Power.-2008,23(4).-404～407

Whendifferentialopticalabsorptionspectroscopyisappliedtomonitorthefluegasfromafixedpollutionsource,thefluegastemperaturewillexercisearelativelygreatimonNO2absorptioncharacteris2tics.Onaself2madeteststand,anexperimentalstudyhastheorptionspectrumcharac2teristicsofNO2gaswhenitstemperaturefallsshowthatwhenthetemperatureisinarangeof30～150℃besubjectedtoaleapchangeinthepresenceofatemperaturerise.Hkeptunchanged.Whenthetemperatureisinarangeof150～270℃,atemperatureadecreaseofthedifferentialspectrumpeakvalueandanincreaseofthevalleyval2ue.Whenthetemperatureishigherthan270℃,aconspicuouschangewilloccurtothefineconfigurationofthedifferen2tialabsorptionspectrumandthenumberofpeaksandvalleyswillincrease.Keywords:differentialopticalabsorptionspectroscopy(DOAS),nitrogendioxide(NO2),absorptioncrosssection,influenceoftemperatures

甲烷扩散火焰空间拟序结构三维运动研究=AStudyoftheThree2dimensionalMovementofaCoherentStruc2tureinaMethaneDiffusionFlameSpace[刊,汉]/HUANGQun2xing,WANGFei,YANJian2hua,etal(NationalKeyLaboratoryonCleanUtilizationofEnergySource,ZhejiangUniversity,Hangzhou,PostCode:310027)//JournalofEngi2neeringforThermalEnergy&Power.-2008,23(1).-408～412

Ananalyticmethodwaspresentedforthethree2dimensionalmovementcharacteristicsofturbulentflamesbasedonahigh2speedstereoscopicvisualization.Themethodinquestionfirstmakesuseofastereoscopewithdualviewinganglestoen2ableasingleCCD(chargecoupleddevice)targetsurfaceacquiringsimultaneouslytwoflameimagesfromdifferentan2gles.Throughacalibration,theparametersofavideocameracanbeobtained.Finally,athree2dimensionaldistributionofthevortexconfigurationintheflamesanditsdiffusionspeedcanbedeterminedbyusingthethree2dimensionalrebuildingmethodbasedonatwo2eyevisualizationtheory.Throughexperiments,reestablishedwerethethree2dimensionaldistribu2tionandvelocityprofileofthevortexconfigurationinamethanepremixedflame.Thecalculationresultsshowthatduetothenon2uniformityoftheradialdistributionofcombustionspeedsandtheexpansionactionofgasflowwhenitisheated,theflamesurfacewillbebentoutwardsnearitsboundary.Keywords:turbulentflame,coherentstructure,stereoscopewithdoubleviewingangles

二氧化碳气体辐射特性宽带k分布模型=AWide2bandkDistributionModelforRadiativeCharacteristicsofCarbonDioxide[刊,汉]/YINXue2mei,LIULin2hua,LIBing2xi(CollegeofEnergyScienceandEngineering,HarbinInstituteofTechnology,Harbin,China,PostCode:150001)//JournalofEngineeringforThermalEnergy&Power.-2008,23(4).-413～416

Anovelwide2bandkdistributionmodelwasestablished.Thespectrumradiativecharacteristicparametersofcarbondiox2idewereobtainedfromahigh2temperaturegasdatabaseHITEMP.Acorrelationformulawasusedtoperformafittingoftheabsorptioncoefficientofmaincarbondioxidespectrumband.Themodelinquestionwasusedtocalculatetheradia2tiveheatfluxofthecarbondioxide.Acomparisonwasmadewithaline2by2linecalculationmethod,statisticalnarrow2bandmodel,anarrow2bandandafull2spectrumkdistributionmodel.Theresultsofthecomparisonshowthatforisother2malgases,theresultsobtainedbyusingthewide2bandkdistributionmodelareinverygoodagreementwiththoseob2tainedbyusingtheline2by2linecalculationmethod,evenmoreaccuratethanthoseobtainedbyusingthefull2spectrumk

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