循环流化床富氧燃烧技术进展

循环流化床富氧燃烧技术进博遂东南大BritishAntarctic排放各国排放

中国煤、石油、天然气的碳排放量以及碳强度变化气候变化公中国：2030年GHG达到排放峰值，非化石能源份额提高到20%；2030年单位GDP碳排放比2005年减第21 气候变化大《巴黎协定》 ，各方将加强对气候变化胁的全球应对，把全球平均气温较工业化前平升高控制在2摄氏度之内，并为把升温控制在1.5摄氏度之内而努力。循环流化床富氧燃烧的优适应性Fuel Potentialtorealizehighefficientcombustionoflowgradefuel紧凑锅炉尺寸Morecompactfurnce无需新燃烧器Donotneednew-designed多污染协同控制pollutant 循环流化床富氧燃烧工作思我国循环流化

2.0MWtmulti-functionaloxy-CFBsystemAtransparentFBtoAtransparentFBtostudythemechanismofcoalcombustioninoxy-FBStudycombustionemissionofsolidfuel

2.5MWtIBHX-Batchoxy-CFBinZJU

50kWtwarm-recycleOxy-CFBsystemThebeginningofresearchThebeginningofresearchinChinacombustion6kWt&50kWtoxy-CFBsystem

2.0MWtoxy-CFBcombustorwitha100kg/h2.0MWtoxy-CFBcombustorwitha100kg/hbubblingbedpyrolysisreactorCompletedCompletedbyChineseAcademyofScience,O2concentration:Developthein-bedheatexchangerforhighO2Developthein-bedheatexchangerforhighO2concentrationapplicationTheThefirstpilotoxy-CFBwithfluegasrecycleinChina东南大学主要工富氧气氛流态化条件下单颗粒的燃烧机理Single combustioninFluidizedbedfuelcirculatingfluidizedbedstudy50kWt循环流化床氧/温烟气循环燃烧中试研究50kWtoxy-fuelcirculatingfluidizedbedcombustorwithfluegasrecycle4面向高氧浓度的新型2.5MWtIBHX-CFB中试研究2.5MWtIBHX-CFBcombustorstudyforhighO22.0MWt面向零排放的循环流化床富氧燃烧中试研究2.0MWtmulti-functionaloxy-fuelcirculatingfluidizedbedcombustorwithfluegasrecycle单颗粒流化床富氧燃烧实验SingleparticlecombustioninFluidized——揭示了气氛对脱挥发分、挥发分燃烧、焦炭燃烧的影响机循环流化床O2/CO2燃烧小试研究Benchscaleoxy-fuelcirculatingfluidizedbed—揭示了CO2H2O气氛对燃烧效率及S/N、重金属、PM2.5和痕量元素等污染物析出排放的影响规律

Retrunleg6kWt

CFB

采用模拟气氛，研究了包括

烟煤、生物质和石油焦等多

50kWtBenchCFB灰中钙形态的表征阐明了实际运行中富氧气氛下脱硫机Desulfurizationefficiency,(%Desulfurizationefficiency,(%LUnburntcarboncontentUnburntcarboncontentSelfretentionefficiency,s air air O/CO O2concentration(.%by Unburntcarboncontent: airatmosphere,flyash; airatmosphere,bottomash; O2/CO2atmosphere,bottomashSelf-retention air O2/CO2ofbituminouscoalCalciumspeciationinthe

2Oconcentration(.%by2oflimestoneCOCO分压2

温度

气氛中的水蒸气促进了扩散控制阶段的 enthasanegligibleeffectonthelimestonesulfationduringthekinetically-controlledregimewhileenhancesthecalciumduringthediffusion-controlledstage.DuanLunbo,etal.Investigationonwatervaporeffectondirectsulfationduringwet-recycleoxy-108:121-127,August2013EvaporationandfinefragmentationarethemaincausesforPM2.5formationandtheatmosphereaffectsPM2.5emissionbychangingthecharChengruiQu,ChangsuiZhao,WuZhou,LunboDuan.EmissionpropertiesofPM2.5O2/CO2atmosphere.ProceedingsoftheCombustionInstitute,痕量元

RelativeRelativeRelative

Anthracitebottom

airairatmosphere2222airatmosphere2222从空气气氛切换到相同氧浓度的富氧气氛时富集因子的变化FlyFlyAs、Ba、Cd、Cu、As、Ba、Cd、Cr、As、Cu、Cr、Ba、Cd、Cu、Cr、As、Cu、Ba、Cd、Cr、影响机理很复杂Schematic50kWt氧/温烟气循环中试试验Pilottestson50kWtoxy-fuelcirculatingfluidizedbedwithwarmfluegasrecycle——验证了系统经济性和安全性、实现了多种污染物的协Schematic中试运行画 安全氧切换、低漏气、高CO2浓 //0

OConcentration/OConcentration/286420

C1,O2concentrationintheoutletofcycloneC,OconcentrationintheoutletofRFGfan Stable

Time/

LowairEasy Oxygenconcentrationandbed高燃烧效率、低SO2/NOx/CO排

USBituminous ChineseBituminous ChinesePetroleum-

Densebed Furnaceexit FurnaceexitO2concentration,%OverallO2concentration,%Unburntcarboninfly%SO2SO2Ca/SmloarDesulfurization%NONOCOCOH2O%DuanLunbo,HaichengSun,ChangsuiZhao,WuZhou,Xiao Chen.Coalcombustioncharacteristicsonanoxy-fuelcirculatingfluidizedbedcombustorwithwarmfluegasrecycle[J].Fuel,127:47-51,2014. O,HOconcentration/ O,HOconcentration/ 222HOintheflue222

8SO/SO/3SO/23

air SO3concentrationduringoxy-fuelCFBpilotInternationalJournalofGreenhouseGasControl.2015,43:172-178.面向高氧浓度的新型2.5MWtIBHX-CFB中试研究2.5MWtIBHX-CFBtechnologyforhighO2concentrationapplicationwithBabcock&Wilcox)——¼比例冷模的2.5MWth热态实验验证了传热系数、传热量和受热面布置方 运行17.5%-20%的总热输入可以布置在新型换35%氧浓度的循环流化床富氧燃烧锅炉Potentiallyhigh(--35%)andreducedmulti-functionaloxy-fuelcirculatingfluidizedbedcombustorwithfluegasrecycle(withShanghaiBoilerGroup)Oxy-FuelOxy-Fuel+SNCR+NID+DCS系FBCcombustorstudy——更高经济性1

300MWeoxy-CFBpower1.5%1.5%netefficiencygaincanbeachievedasthepressureincreasesfromatmosphericto0.4MPa.PressurizedOxy-fuelCombustionSystem.ProceedingsoftheCSEE.2014,34(5):756-762.增压氧水燃烧Pressurized 水循环利冷却搅拌

原

锅炉锅炉补给水系

磨煤冷凝水冷凝水处理装浆液

COCO2辐射换热 对流换热增压锅 空分装氧空分装

压缩