脱销改造方案介绍

斗山巴布科克公司SCR技术介绍斗山巴布科克能源技术（上海）有限公司DoosanBabcockPowerTechnologies(Shanghai)Ltd2011年05月10日1898–1997ProgressiveestablishmentbyBabcockUKofAssociate&SubsidiaryCompaniesACCBabcockLimited(India)BabcockEnterprise(France)DeutscheBabcock(Germany)B&WEspanola(Spain)BabcockHitachi(Japan)BabcockAfrica(RSA)B&WMexico(Mexico)MitsuiBabcockEnergy(India)Ltd.MBELPacificLimited(Japan)andotherLicensees1891Babcock&Wilcox(UK)LimitedCompanyestablishedintheUnitedKingdomforallsalesworldwideexceptUSAandCuba1979BabcockPowerLimitedRenamed1987BabcockEnergyLimitedRenamed1995MitsuiBabcockEnergyLimitedCreatedbyMitsuiEngineering&ShipbuildingpurchaseofcompanyDec2006DoosanBabcockEnergyDoosanHeavyIndustries&Construction(partoftheDoosanGroup)purchasesMitsuiBabcockfromMitsuiEngineeringandShipbuildingDoosanBabcockandAssociatedCompaniesOEMProductCompaniesDoosanPowerSystemsDoosanPowerSystemsDoosanPowerSystems•TurbineOEM•AftermarketServices•NewBuild•R&D•TurbineOEM•AftermarketServices•NewBuild•R&D•BoilerOEM•AftermarketServices•NewBuild•R&D•BoilerOEM•AftermarketServices•NewBuild•R&D•Boiler&TurbineservicestoEuroperegion•Boiler&TurbineservicestoEuroperegion•Boiler&TurbineservicestoAmericasregion•Boiler&TurbineservicestoAmericasregionDoosanPowerSystemscollectivelyoffersBTGsupplyandEPCdeliverycapabilityasasinglesourceacrosstheworld*ServesUK,HongKongandSub-SaharanAfricaregionsDoosanPowerSystems(Americas)DoosanPowerSystems(Americas)DoosanPowerSystems(Europe)DoosanPowerSystems(Europe)DoosanBabcockDoosanBabcockŠkodaPowerŠkodaPower„DoosanBabcockandŠkodaPoweraretheboilerandturbineOEMcentresoftheDPSGroup„Strongaftermarketservicepresenceinfossilandnuclearpowersectors„DoosanBabcockisthenumberonemechanicalconstructioncontractorintheUKpowersectorPage3•BTG•EPC•CCS•BTG•EPC•CCSPlantPlantFutureTechnologiesDoosanBabcockEnergyarecommittedtodeliveringinsightfulandforwardthinkingenergysolutionsthatexceedtheexpectationsofourglobalcustomerbase.Page5DoosanBabcock-ChinaOperationBusinessModelNewBuildTechnicalSupports+TechTransferPlantUpgradeSCRSelectiveCatalyticReduction(SCR)选择性催化还原烟气脱硝技术•SCR-SelectiveCatalystReduction•SCR-选择性催化还原法•SelectiveCatalyticReduction(SCR)isapost-combustioncontroltechnologybasedonthechemicalreductionofnitrogenoxides(NOx)intomolecularnitrogen(N2)andwatervapor(H2O)。•选择性催化还原法是基于NOx化学还原成分子N2和水蒸气H2O的燃烧后控制技术。•SCRtechnologywasfirstlydevelopedbyAmericanin1950sandpatentedbyEegelhardcompanyin1957.ThefirstindustrialscaleapplicationwasinJapanintheendof1970s.•SCR技术最早是在上世纪五十年代美国人首先提出的，美国Eegelhard公司于1957年申请了该技术的发明专利。七十年代末最早在日本实现工业规模的应用。•SCRisthemostwidelyused,themostdevelopedandeffectiveDeNOxtechnologyintheworld.•SCR是世界上应用最广泛，最成熟和最有效的的脱硝技术。NOxFormationNOx的形成机理•TherearethreemechanismsofNOxformation.•NOx有三种形成机理–ThermalNOx热力型NOx–FuelNOx燃料型NOx–PromptNOx快速型NOx•NOxEmissionControlTechnologies:•两种NOx排放控制技术：–controlcombustioninthefurnace炉内燃烧控制–FluegasCleaning燃烧后的净化SCRtypicalInstallationSCR典型布置图锅炉空气预热器送风机电除尘器脱硫脱硝反应器催化剂氨蒸发器氨空气混合器氨储罐NH34NO+4NH3+O24N2+6H2O2NO2+4NH3+O23N2+6H2ONO+NO2+2NH32N2+3H2OSCRProcessChemistrySCR化学反应机理Catalyst160-600°CCatalyst160-600°CCatalyst160-600°C从省煤器来的烟气预留催化剂和吹灰器位置均流板气态氨烟气去空预器催化剂温度测量点旁路门隔离门吹灰器调试/控制格和测温点省煤器旁路SCRSystemBox&DuctingSCR系统及烟道布置SCRReactorComponentsSCR系统组成•1Catalyst催化剂•2LargeParticleScreen大颗粒灰滤网•3StaticMixer静态混合器•4AmmoniaInjectionGrid喷氨格栅(AIG)•5SootBlower吹灰器¾SonicHorn声波吹灰器¾SteamSootBlower蒸汽吹灰器•6Reactor反应器•7Reagent反应剂¾AnhydrousAmmonia液氨¾AqueousAmmonia氨水¾Urea尿素CATALYST催化剂Catalyst–Function催化剂-功能Providereactionzone提供反应区域FluegasflowthroughthecatalystandNOxandNH3reactatthesurfaceofthecatalyst.烟气流过催化剂，NOx及NH3在催化剂表面发生反应。Acceleratethereactionspeed加快反应速度Atthenormalcondition,thereactionneedthelargeenergytostart-up,withthecatalyst,theenergyrequiredisdecreasedandthereactionspeedincreased.在通常情况下，需要耗费大量能量启动反应。催化剂参与后，所需能量减少且反应速度加快。Catalyst–Types催化剂-类型honeycombplatecorrugated蜂窝板式波纹Catalyst–Loadingsystem催化剂-安装系统示意AmmoniaInjectionFutureCatalystCatalystMonorailHoistEnclosedHoistwayTurningdevice喷氨格栅电动葫芦催化剂单轨粱电动葫芦井催化剂翻转装置备用层催化剂LargeParticleScreen大颗粒灰滤网LargeParticleAsh大颗粒灰AshScreenLocation大颗粒灰滤网位置FlueGasFlueGasEconomizerEconomizer烟气流动方向省煤器滤网实物图LargeParticle(Popcorn)AshScreen(LPS)大颗粒灰（爆米花状）滤网StaticMixer静态混合器FlueGasStaticMixer烟气静态混合器•TomakesurethefluegasbecomeuniformconcentrationinNOxconcentrationbeforeAIG•用以确保烟气在通过AIG之前其中的NOx浓度均匀喷氨网格(AIG)AmmoniaInjectionGrid-Functionandtypicaldesign喷氨格栅-功能和典型设计ThepurposeoftheammoniainjectiongridistoputtheammoniawheretheNOxis.氨喷射格栅的目的是根据烟气中NOX浓度相应地喷入反应所需要的氨•Between2x4and3x12independentinjectionzones•设置2X4至3X12个独立的喷氨区•Typically4or5pipesperinjectionzone•典型的，每个喷氨区布置4-5个喷射管•injectionnozzlesat200to300mmpitch•喷嘴间距200-300mm•Locationdownstreamofstaticmixer•一般布置在静态混合器的下游AmmoniaInjectionGrid-Structure喷氨格栅-结构示意图flowdirection3x14=42controlvalvesnozzlesDN1/2Sch10lancesDN3Sch10mainheaderpipeDN30zoneriserpipesDN6Sch10zoneheaderpipesDN10Sch10EXP.J.AAflowflowflowflowflowAmmoniaInjectionGrid-Structure喷氨格栅-内部和外部结构CatalystCleaning催化剂吹灰CatalystCleaning催化剂的清洁•InorderfortheSCRtoworkefficiently,thefluegasmustcontactthecatalystsurface.•为使SCR系统高效运行，烟气必须和催化剂表面充分接触•Twoc