欧洲水泥工业脱硝应用介绍.ppt

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1、CEMENTDE-NOxAPPLICATIONINEUROPE欧洲水泥工业脱硝应用介绍1)TheEuropeanCementIndustry欧洲水泥工业现状ManufacturingTechnologies生产技术Capacityfrom1000to5500t/d处理能力从1000到5500t/dSNCRtechnologyforNOxreductionisapplicableonthesetechnologiesbothdryandwet.SNCR脱硝技术同时适用于干法和湿法Technology

2、技术类别PreHeaterTowers预热塔PreCalcinerTowers预分解窑LepolGates立波尔窑Longkilns长转窑DENOXSTATUS行业脱硝现状283CementManufacturinglines(2009)283家水泥生产线ThemajorityoftheplantsinWestEuropeareequippedwithSNCRtechnology西欧大部分水泥厂都配备SNCR系统Firstinstallationsmade20yearsago.20年前安装了第一套

3、SNCR系统OneSCRinstallation目前仅有一套水泥SCR系统2)TheEuropeanNOxLegislation欧盟关于Nox排放的相关规范EUdirectiveforCementPlantsnotusingwasteasfuel以非废弃物作为燃料的水泥厂的欧盟指令Forplantsusingdrytechnologywithheatrecovery工厂采用干法（带余热回收）1200mg/Nm3as24hoursaverageForplantsusinghalfdrytechnol

4、ogy工厂采用半干法1500mg/Nm3as24hoursaverageForplantsusingwetordrytechnologywithoutheatrecovery工厂采用湿法和干法（不带废热回收）1800mg/Nm3as24hoursaverageEUdirective2000/76/EUforWasteincinerationinCementPlants2000/76/EU以废物焚烧水泥厂的欧盟指令FORPREHEATER&PRE-CALCINERTECHNOLOGYForold

5、erplantsusingmaximum40%wasteasfuel使用40%以下废物作燃料的现有工厂800mg/Nm3as24hoursaverageLocallymorestrictrules当地更严格的法规Fornewerplantsusingmaximum40%wasteasfuel使用40%以下废物作燃料的新建工厂500mg/Nm3as24hoursaverageLocallymorestrictrules当地更严格的法规Forallplantsusingmorethan40%waste

6、asfuel使用超过40%以上废物作燃料的工厂Localrulespointingat200mg/Nm3as24hoursaverage局部地区更严格规定24小时的平均值是200mg/Nm3TypicalTypeofWasteused使用废物的典型类型1.Tires轮胎2.Plasticfluff塑料绒毛3.Wasteoils废油4.Animalfat动物脂肪5.Householdwaste生活垃圾6.Wood木材FutureTrend未来的趋势Longkilnsshallapply800mg/N

7、m3长转窑应采用800mg/Nm3PreheaterandPrecalcinerTowersshallapply500mg/Nm3预热器和预分解窑应采用500mg/Nm3Locallymorestrictrulespointingat200mg/Nm3局部更严格的法规是200mg/Nm33)TheSNCRProcessinCementPlants水泥厂SNCR工艺Tworeagentscompare两种还原剂对比Ammoniumhydroxide(NH4OH)氨水Reactionismoredir

8、ect反应更直接HigherNOxreductions高效的去除率Lowerammoniaslip较低氨逃逸Higherchemicalreactionefficiency较高的化学反应效率Ureasolution((NH2)2CO)尿素Reactionmorecomplex反应更复杂Formationoflaughinggas（N2O）形成笑气(温室气体）LowerNOxreductions较低的去除率Higherammoniaslip较高的氨逃逸HigherCOformatio