simultaneous removal of so2 and nox from flue gas

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1、SimultaneousRemovalofSO2andNOxFromFlueGas　　【Abstract】Inthispaper，therecentprogressofsimultaneousremovalofSO2andNOxprocessathomeandabroadisreviewed.Wemainlyintroducedcalciumbasedabsorbentcatalyticoxidationmethod，complexationabsorptionprocess，Electronbeammethodetal，principleofeachtechnologya

2、redescribed，andthedevelopmentdirectionwasputforwardinthefuture.　　【Keywords】SO2；NOx；SimultaneousremovalofSO2andNOx　　SO2andNOxisthemaincauseofacidrain，sosimultaneousremovalofSO2andNOxfromfluegasisinevitabletrendinthecontrolofatmosphericpollution[1].　　1SimultaneousremovalofSO2andNOxusingcalci

3、umabsorbent　　Themostmature，stableoperationandwidelyusedofthedesulfurizationprocessislimestone-gypsummethod.ReplacinglimestonewithslakedlimeasthemainabsorbentcanremoveSO2andNOx[2].2Complexationabsorptionmethod　　Sada[3]andChang[4]etalhavefoundthatsomemetalcomplex（Fe（EDTA）andFe（NTA））canreactw

4、ithdissolvedNOxquicklyandformferrousnitrosylchelate，thuspromotesthedissolvedofNOin3water.3Electronbeammethod　　Theprincipleisusinghighenergyelectronbeamirradiationonfluegas，generatedalotofactivematerial，thefluegasofSO2andNOxoxidatedintoSO3andNO2，furthergenerateH2SO4andNaNO3，andabsorbedbyNH3

5、orCaCO3[5-7]..　　4Expectation　　Atpresent，thedesulfurizationtechnologyathomeandabroadhasbeenmature，butthedenitrationtechnologyisstillinthestudyandpreliminarystage.Fromthefuturedevelopmenttrend，alotofwastewaterandresidueproducedbywetmethodcancausesecondarypollution.Consideringtheprocessandsim

6、pleoperationandrecoveryofsulfurresources，dryprocessdesulphurizationisthedirectionoffuturedevelopment.Soweshouldstepupresearchofdrydesulfurizationdenitrationtechnology，includingthedevelopmentofmoreefficientadsorption/catalyst.　　【References】　　[1]WANGR.TheResearchofSimultaneousDesulfurization

7、andDenitrationandIndustrialApplication[J].AppliedEnergyTechnology，2013（3）：14-16.　　[2]ZHANGH，TONGHL，WANGJY，etal.SimultaneousRemovalofSO2andNObyUsingCalciumAbsorbentwithKMnO4asAdditive[J].JournalofChemicalIndustryandEngineering，32007，58（7）：1810-1815.　　[3]SadaE，K