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FlueGasCleaningUsingWet-TypeElectrostatic Precipitator LiminDong,ShengLan,JiaxiangYang,XiaochunChi HarbinUniversityofScienceandTechnology Harbin,Heilongjiang,China,150040 E-mail:lmdongcn@163.com Abstract-Recently,SO2andNOxhavebecomeseriousairpollutantsuchasphotochemicalsmogandacidrain. InspiteofanattempttoreducetheamountofSO2andNOxemitted,thedensityofSO2andNOxinthe atmospherehasremainedonastablelevel,orevenbecomeworse.Here,wedesignedanoveltypeofawater filmcoronadischargeexperimentmodel.Thereactoriscomposedofneedle-plateelectrodesthatareplacedina glasscontainerfilledwiththefluegas,(theplateelectrodeisimmersedinthewater).Inthispaper,we emphasizedonstudyingtheinfluenceofwateronremovalratesofNOandSO2.Theexperimentalresultsshow thatthecoronawindformingbetweenhigh-voltageelectrodeandwaterfilmbycoronadischargeenhancesthe cleaningefficiencyofthefluegasbecauseoftheexistenceofthewaterfilm,andthecleaningefficiencywill increasewiththeincreaseofDCappliedvoltagewithindefiniterange.Accordingtothiseffectawaterfilm electricalcoronareactordesignedisusedtotreatthesimulatefluegas,andtheresultshowsitnotonlygainsthe removalefficiencyofSO2upto98%,butalsogainsabout85%ofNOxremovalundersuitableconditions.This projectisverysignificantforthepreventionofacidrainandthetreatmentofdustoffluegasandthe improvementonthetraditionalElectrostaticPrecipitator. Comparedtoothermethods,coronadischargeisone I.IntroductionoftheeffectivewaysofremovalofSO2andNOxin Themaincauseofacidrain,urbansmogandfluegas[1].Manystudiesreportedthatchemical greenhouseeffectaresulfurdioxide(SO)andreactionsinducedbycoronadischargeareaneffective 2pathfortheremovalofthem[2].Thecriticalroleof nitrogenoxides(NOx)emittedfromvarioussources, e.g.,coal-burningpowerplants,factoriesforwastecoronadischargeintheremovalofNOisthroughthe disposal,automobiles,andsoon.VarioustechniquesoxidizationofNOtoNO2.OnceNOisconvertedto havebeenusedindustriallyforpollutantremoval.NO2,itcanberemovedbyadditivesuchasammonia, However,manyofthemareselectively