低温等离子体法去除苯和甲苯废气性能研究梁文俊

65Vol.6,No.520055TechniquesandEquipmentforEnvironmentalPollutionControlMay2005梁文俊李坚李依丽王艳磊张书景金毓峑(,100022),,,,,,926%,968%X701A1008-9241(2005)05-0051-05DegradationofbenzeneandtoluenewithcoldplasmaLiangWenjunLiJianLiYiliWangYanleiZhangShujingJinYuquan(CollegeofEnvironmentalandEnergyEngineering,BeijingUniversityofTechnology,Beijing100022)AbstractThefunctionofdegradationfunctionofbenzeneandtoluenewithcoldplasmawasinvestigated.Experimentalstudiesweredonebasedonthetheoreticalanalysis.Energeticelectronsgeneratedbydischargingcollidedwithbenzeneandtoluenemoleculesandtransferredtheenergyofelectronstothem,whichleadedtobreakingthemolecules.Seriesofphysicalandchemicalreactionswouldhappenbetweenthebrokenmoleculesandozoneandenergeticradicals.CO2,COandH2Owereproducedintheend.Theexperimentalresultsshowedthattheremovalefficiencyofbenzeneandtolueneenhancedwithhigherelectricfieldintensityandlowergasflowrate.Theremovalefficiencyofthereactorpackedwithbariumtitanatewasmuchhigherthanthatwithoutbariumtitanate.Thehighestremovalefficiencyofbenzenewas92.6%andthatoftoluenewas96.8%.Toluenewaseasiertobedegradedthanbenzeneonthesameconditions.Keywordscoldplasma;electricfieldintensity;bariumtitanate;benzene;toluene:(8012005);:2004-06-30;:2004-07-25:(1978~),,,E-mai:[e-mail],,,,,[1]1990VOCs[2]1996[3]VOCs[4],,,[5~11][5~8],[9~11],,,,,6,11.11,:,,;2PMMA(55mm,45mm,50cm),,,,,50Hz,,[11],,,,,,,,1Fig.1Schematicdiagramoftheexperimentalunit1.23,1.3SQ20414~574mg/m3,r=0999;12~365mg/m3,r=09982,,VOCs,VOCs,,,,,,,,,,,,,1[4]1(eV)Table1Energiesofbondformation/destructionCC3.6CO3.7CC6.3CO7.7CC()5.5CO(CO2)8.3CH4.3CCl3.5VOCs,VOCs,VOCs,525:,CO2COH2O,VOCs,,,,,,66,,,,,,1,CC55eV,CH43eV43eV,,CCCH,1~2,,,,;,CO2COH2O,3~8CO2COH2O,,3,,,,,1,36eV,,,,,,,,,CO2COH2O,9~13[12]33.123,,,,,,,,,,,O3,,CO2COH2O,,,,,,,,,23,,v=17mm/s,E=114kV/cm,968%,926%5362Fig2Relationshipbetweenremovalefficiencyofbenzeneandelectricfieldintensity3Fig3Relationshipbetweenremovalefficiencyoftolueneandelectricfieldintensity3.245,,,,,,,,,114kV/cm,17mm/s926%,81mm/s574%,352%;,114kV/cm,17mm/s968%,81mm/s90%,68%3.3,24Fig4Relationshipbetweenremovalefficiencyofbenzeneandgasflowrate5Fig5Relationshipbetweenremovelefficiencyoftoluenegasflowrate67,,,,,,6Fig6Relationshipbetweenremovalefficiencyofbenzeneandpellets(gasflowrate:53mm/s)545:7Fig7Relationshipbetweenremovalefficiencyoftolueneandpellets(gasflowrate:53mm/s),,,;,,,,,,,,[13]4(1),CO2COH2O,,,,(2),,(3),v=17mm/s,E=114kV/cm,968%,926%(4),114kV/cm,17mm/s81mm/s352%,68%(5),81mm/s,VOCs,,,[1]..,1999,8:20~21[2]MOOBEENCHANG,CHINCHINGLEE.Destructionofformaldehydewithdielectricbarrierdischargeplasmas.En-vironmentalScience&Technology,1995,29(1):181~186[3]GB16297-1996,[4]CarlosM.Nunez,GeddesH.Ramsey,WadeH.Ponder,eta.lCoronadestruction:AninnovativecontroltechnologyforVOCsandairtoxics.Air&WasteManagementAssoc-iation,1993,43:242~247[5]AtsushiOgata,NoboruShintan,iKoichiMizuno,eta.lDecompositionofbenzeneusinganonthermalplasmareac-torpackedwithferroelectricpellets.IEEETransactionsonIndustryApplications,1999,35(4):753~759[6]HisahiroEinaga,TakashiIbusuk,iShigeruFutamura.Per-formanceevaluationofahybridsystemcomprisingsilentdischargeplasmaandmanganeseoxidecatalystsforbenzenedecomposition.IEEETransactionsonIndustryApplica-tions,2001,37(5):1476~1482[7]AtsushiOgata,DaisukeIto,KoichiMizuno,eta.lRemov-alofdilutebenzeneusingazeolite-hybridplasmareactor.IEEETransactionsonIndustryApplications,2001,37(4):959~964[8]AtsushiOgata,KazushiYamonouch,iKoichiMizuno,eta.lDecompositionofbenzeneusingalumina-hybridandcatalyst-hybridplasmareactors.IEEETransactionsonIn-dustryApplications,1999,35(6):1289~1295[9],,..,2000,28(6):699~701[10],..,1997,17(5):449~452[11]ToshiakiYamamoto,KumarRamanathan,PhilA.Law-less,eta.lControlofvolatileorganiccompoundsbyanacenergizedferroelectricpelletreactorandapulsecoronare-actor.IEEETransactionsonIndustryApplications,1992,28(3):528~534[12]HitoshiKohono,AlexanderA.Berezin,Jen-ShihChang,eta.lDestructionofvolatileorganiccompoundsusedinasemiconductorindustrybyacapillarytubedischargereac-torIEEETransactionsonIndustryApplications,1998,34(5):953~966[13],.(VOCs).,1996,17(3):30~3255