北仑发电厂年处理96亿立方米烟气深度脱硫脱硝项目abstract.pdf

ProjectSummary

1.Introduction

Giveprioritytowithcoalenergystructureofourcountryisabigdeveloping

country,accordingtodatareleasedbytheworldenergystatistics,in2013the

proportionofcoalinnationalenergystructureinChinareached67%,coalproduction

inChina,morethan80%isusedfordirectcombustion,andthecharacteristicsoflow

calorificvalueofcoal,highsulfurhighsulfurdioxideandnitrogenoxideemissionsin

ChinaSuchharmfulgasesasSO2andNOXproducedbycoalcombustioncaneasily

causeaseriesofatmosphericpollutionproblemssuchasacidrain,greenhouseeffect

andozonelayerdestruction,whichseriouslyaffectthelivingenvironmentofhuman

beings.Inrecentyears,ChinasSO2emissionshavecontinuedtodecline,butthetotal

emissionsstillexceed20milliontons,rankingfirstintheworldNOXsemissions

from2011starttocount,andNOscontributiontoatmosphericpollutioncannotbe

X

ignored.Ifitisnotcontrolled,itwillhaveamoreseriousimpactonChinas

atmosphericenvironment.

SO2pollutioncanbedividedintotwomaincategories:naturalsourcesand

humansources.Anthropogenicsourcesmainlyincludesulphidefuel(coal,oiland

naturalgas)combustionandsulfur-bearingsmeltingandproductionofsulphuricacid

industry,etc.InthevariousSO2emissionprocesses,theamountofSO2producedby

thecombustionprocessofthefuelis90%,whichisthebiggest.Sourceof

anthropogenicemissionsaccountedforabouttwo-thirdsoftheworldsatmospheric

emissions,andrelativelyconcentrated,intheaccountforlessthan1%ofthecities

andindustrialzonesoftheearthssurfaceab