花瓣燃烧器的稳燃性能与应用研究

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1、东南大学博士学位论文花瓣燃烧器的稳燃性能与应用研究姓名：赵伶玲申请学位级别：博士专业：热能工程指导教师：周强泰;吕震中20050901东南大学博士学位论文AbstractSTUDYoNFLAMESTABILITYANDAPPLICATIONFORPETALSWIRLBURNERAbstractThereareabundantlowVolatilecoalstores．suchasanthracitesandsemi—anthracitescoalinChina．ThesefuelshaVethecharacteristicsofdi伍cultiesinigni

2、tion，f1锄estabilityandcarbonconVersionduetocontainlowervolatilematter(VM)．HowtosuccessfullybumlowVolatilecoalshaSbeenbecomingoneofthekeyissuesinpowerplantboiler．Mostoflowv01atilecoalunitsinChinahaVeadoptedcomerfiringtechnology．Boilerswithtangentially-firedbumerareeaSytofomslaggingand

3、greattemperaturedeviationoffluegaSattheexitofboilerfumace，whichwillbemoreseriouswiththeincreaSeincapacityofthepoweru11its，andimpacttheOperationofla唱ebOilerseriously．WhileswirlcombustionhaSobViousadvantagesinreductionofslaggingandtemperaturedeViation，l叫驴一scaleunitsinthewestemcoumries

4、areoRenusethewallopposednringswirlbumer．Butswirlbumersareconsideredtobesuitableforbuminghighgradebituminouscoal．ThestablecombustionastheprimaryissueforthereliableoperationOflowvOlatilecoalwithwallOpposednringswirlbumer，hasnotbeensolVedyet．ItisanXioustodeVelopanewtypeofswirlbumerwimg

5、reatstablecombustionperfomanceandsuitableforthesituationofourcOunt阱BaSedonthereaSonsofcommonswirlbumerscouldnotstablecombustionoflowvolatilecoal，thispaperintroducestheinventionofanewtypeofstabilizer—PetalF1ameStabilizer(PFS)．ThenewtypeofswirlbumerwithPFS—PetalSwirlB啪er(PSB)andthegoo

6、dnamestabilityandlowNoxemissionarediscussed．Bymeansofnumericalsimulationtheo秽analysisincombinationwithindust呵experimentationinpowerplant，studiesonthestablecombustionperfbnnanceofpetalflamestabilizerandpetalswirlbumerareperf．onnedindetail．Thispapersetsupathree．dimensional(3600)coalco

7、mbuStionmathematicsmodelt0simulatethenow行eld，temperaturefiledandthecombustionspecies’sconcentrationdistributions(C02，02，N0x)forPetalSwirlBumer．Thedimensionoftherecirculationzone，recalculatingfluxandmixedcoe伍cientareanalyzedtoresearchthecombustionstabilityofPSB．ThePetalSwirlbumer’sde

8、signstakethemiXture