欧洲水泥工业脱硝应用介绍

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/dSNCRtechnologyforNOxreductionisapplicableonthesetechnologiesbothdryandwet.SNCR脱硝技术同时适用于干法和湿法Technology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1.Forplantsusingdrytechnologywithheatrecovery工厂采用干法（带余热回收）•1200mg/Nm3as24hoursaverage2.Forplantsusinghalfdrytechnology工厂采用半干法•1500mg/Nm3as24hoursaverage3.Forplantsusingwetordrytechnologywithoutheatrecovery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-CALCINERTECHNOLOGY•Forolderplantsusingmaximum40%wasteasfuel使用40%以下废物作燃料的现有工厂•800mg/Nm3as24hoursaverage•Locallymorestrictrules当地更严格的法规2.Fornewerplantsusingmaximum40%wasteasfuel使用40%以下废物作燃料的新建工厂•500mg/Nm3as24hoursaverage•Locallymorestrictrules当地更严格的法规3.Forallplantsusingmorethan40%wasteasfuel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/Nm3长转窑应采用800mg/Nm3•PreheaterandPrecalcinerTowersshallapply500mg/Nm3预热器和预分解窑应采用500mg/Nm3•Locallymorestrictrulespointingat200mg/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•Reactionismoredirect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•HigherCOformation较高的CO形成Effectofthetemperature温度的影响Injectionlocationsiskey喷射位置至关重要Injectoritselfiskey喷枪的重要性4)WhatNOxreductioncanbeachieved?能达到的NOx去除率？Ureaorammoniumhydroxide?尿素或氨水？0%10%20%30%40%50%60%70%80%90%100%ReductionTestReductionofthePetroSNCRsystemwith25%NH4OH/ureasolutionMaxreductionNH4OHMaxreductionwithureaEfficiency(AUF)ofthePetroSNCRsystemwith25%NH4OH/ureasolution0%10%20%30%40%50%60%70%80%90%100%12345678910111213141516171819202122232425TestReactionefficiencyAUFEfficiencywithNH4OHEfficiencywithureasol.–70-90%NOxreductionpossiblewithSNCRtechnologyusingammonium-hydroxide.–SNCR用氨水可达到70-90%的NOx去除率–30-40%NOxreductionpossiblewithSNCRtechnologyusingurea.–SNCR用尿素可达到30-40%的NOx去除率–60-85%chemicalefficiencypossiblewithSNCRtechnologyusingammonium-hydroxide.–SNCR用氨水可达到60-85%的化学效率–20-40%chemicalefficiencypossiblewithSNCRtechnologyusingurea–SNCR用尿素可达到20-40%的化学效率Costsaving–example费用对比-举例Evaluationofthedifferenceincostusing40%urea/25%ammoniumhydroxideasreagent:40%的尿素和25%的氨水的使用耗量评估•Fluegasflow（烟气流量）:300.000Nmc/h@10%O2,dry•NOxbaseline（基准值）:1000mg/Nmc@10%O2,dry•NOxtarget（目标值1）:750mg/Nmc@10%O2,dry(25%reduction)•NOxtarget（目标值2）:450mg/Nmc@10%O2,dry(55%reduction)•Hours/year（年运行时间）:7200hours/year•Costofreagent（还原剂单价）:160Euro/ton(foreachreagent)Reagent还原剂ReductionConsumptionyear[ton]每年耗量Estimatedcost/yearUrea40%25%3168€506.880,00Urea40%55%7524€1.203.840,00NH4OH25%25%1029€164.586,24NH4OH25%55%2424€387.878,40ReductionCostsaving/year25%€342.293,7655%€815.961,606)DENOXTECHNOLOGY脱硝技术选择CONCLUSION结论•SNCRtechnologywithammonium-hydroxidecapabletomeetmoststringentNOxreductionneeds使用氨水的SNCR技术能够满足最严格的NOx的降低需求•SCRmuchmoreexpensive.OnlyafewinstallationsintheworldSCR投资和运营成本过高。全球范围内仅仅有少量的安装Chinarepresentation大中华区全权代表PetroMiljöAB(SNCR)TECHSPRAY(CoopertorinChina)上海泰欣（PM大中华区SNCR唯一技术集成商）HK香港PRC大陆·MACAO澳门TAIWAN台湾THANKSFORYOURATTENTIONXiamen29October2011BengtHellmanssonPetroMiljöAB