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1、摘要:为研宄DBD低温等离子体协同催化反应器中催化剂颗粒直径对放电功率和NO??x?脱除率影响规律,分别将五种不同颗粒直径的催化剂装入相同条件的反应器中,通过变压器改变交流电源输入电压,用功率表测定不同电压条件下的输入功率,用数字示波器测试放电电压以及Lissajous图像并计算放电功率,用气体在线检测装置测试反应器进出口浓度计算NO??x?脱除率。实验发现随催化剂颗粒直径增加放电电能和NO??x?脱除率先增大再减小,有最大峰值;随着输入电压增加催化剂颗粒直径对放电电能和NO??x?脱除率的影响进一步增大。在本实验研究中催化剂
2、最佳颗粒直径在4mm左右,当输入电压为40kV时,最大有效放电能量和N0??x?脱除效率分别为29.3W和76.67%o该结论可为DBD协同催化反应过程中选择适宜催化剂颗粒直径提供理论依据。?关键词:低温等离子体;介质阻挡放电;催化剂颗粒直径;放电功率?中图分类号:X511文献标识码:A[WT]文章编号:1672-1098(2011)02-0001-05????••收稿曰期:2011-02-28?基金项目:国家自然科学基金资助项目(21076002);2010年安徽省高校自然科学研究资助项目(KJ2010B323)?作者简介:
3、陈明功(1966-),男,安徽太和人,教授,研宄方向为环境化学工程。?([WT3BZ]EffectofCatalystParticleDiameteronPerformancesofDBDReactor?CHENMing-gong,LIAOXia,CHENJing,CUICan,YANGZhong-lian?YUDong-xu,RONGJun-fen,ZHANGFang,CHENMing-qiang?(SchoolofChemicalEngineering,AnhuiUniversityofScienceandTechnolo
4、gy,HuainanAnhui232001,China)?Abstract:InordertostudytheeffectofcatalystparticlediameteronthedischargepowerandNO??x?removalrateinthereactorofnon-thermalplasmaDBDwithcatalytic,fivedifferentcatalystparticlediameterswerefilledintothesamereactorconditions,respectively.Us
5、edthetransformertochangetheACpowerinputvoltage,measuredinputpowerofdifferentvoltagebypowermeter,adigitaloscilloscopewasusedtotestdischargevoltageandLissajousimageandcalculatedischargepower,gasonlinedetectiondevicetotesttheimportandexportconcentrationofthereactorandc
6、alculatedNO??x?removalrate.TheexperimentshowsthedischargepowerandtheNO??x?removalratioincreasesandthendecreaseswiththediameterincreasing.Thecatalystsizehasamaximumpeakvalue.WiththeinputvoltageincreasingtheeffectofparticlediameteronthedischargepowerandtheNO??x?remova
7、lratioincreasemore.Theresultsshowtheoptiondiameterofcatalystis4mminthisexperiment,whentheinputvoltageis40kV,themaximumvalueofthedischargepowerandtheNO??x?removalratiois29.3Wand76.67%,respectively.Thestudycanprovideatheoreticalbasisforchoosingtheappropriatediameterof
8、catalystintheDBDassistedcatalyticreactor.?Keywords:non-thermalplasma;dielectricbarrierdischarge;catalystparticlediameter;dischargepower??介