北仑发电厂年处理96亿立方米烟气深度脱硫脱硝项目abstract.docx

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ProjectSummary

Introduction

Giveprioritytowithcoalenergystructureofourcountryisabigdevelopingcountry,accordingtodatareleasedbytheworldenergystatistics,in2013theproportionofcoalinnationalenergystructureinChinareached67%,coalproductioninChina,morethan80%isusedfordirectcombustion,andthecharacteristicsoflowcalorificvalueofcoal,highsulfurhighsulfurdioxideandnitrogenoxideemissionsinChinaSuchharmfulgasesasSO2andNOXproducedbycoalcombustioncaneasilycauseaseriesofatmosphericpollutionproblemssuchasacidrain,greenhouseeffectandozonelayerdestruction,whichseriouslyaffectthelivingenvironmentofhumanbeings.Inrecentyears,ChinasSO2emissionshavecontinuedtodecline,butthetotalemissionsstillexceed20milliontons,rankingfirstintheworldNOXsemissionsfrom2011starttocount,andNOXscontributiontoatmosphericpollutioncannotbeignored.Ifitisnotcontrolled,itwillhaveamoreseriousimpactonChinasatmosphericenvironment.

SO2pollutioncanbedividedintotwomaincategories:naturalsourcesandhumansources.Anthropogenicsourcesmainlyincludesulphidefuel(coal,oilandnaturalgas)combustionandsulfur-bearingsmeltingandproductionofsulphuricacidindustry,etc.InthevariousSO2emissionprocesses,theamountofSO2producedbythecombustionprocessofthefuelis90%,whichisthebiggest.Sourceofanthropogenicemissionsaccountedforabouttwo-thirdsoftheworldsatmosphericemissions,andrelativelyconcentrated,intheaccountforlessthan1%ofthecitiesandindustrialzonesoftheearthssurfaceabovethedominant,wasthecauseofairpollutionproblemsandproducethemainreasonofthephenomenonofacidrain.

Thisprojectusesnitricacidandsodiumcarbonateasabsorbentandnitricacid+LOTOXprocessisusedtoremovesulfideandnitrogenoxidesinthesmokefromtheprocessofcrystallization.Theremovalofthe