首页|Removal of multi-pollutants in flue gas via a new approach based on dielectric barrier discharge coupling MnCu/Ti oxidation
Removal of multi-pollutants in flue gas via a new approach based on dielectric barrier discharge coupling MnCu/Ti oxidation
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NSTL
A dielectric barrier discharge(DBD)coupling MnCu/Ti oxidation and postpositioned wet electrostatic precipi-tator(WESP)system was built.The experimental results showed that WESP can significantly enhance the simultaneous conversion efficiency(ηC)of NO,SO2 and Hg° by the DBD coupling MnCu/Ti reactor.The best simultaneous removal efficiency(ηR)of NO,SO2 and Hg° reached 94.5%,100% and 100%,respectively.The ratio of catalyst active component(Mn/Cu)and catalyst filling amount were optimized.The effects of catalyst active component ratio,filling amount,flue gas component and energy density(SED)on the ηC of NO,SO2 and Hg° were determined.The effect of sodium humate(HA-Na)in the cleaning water on the ηR was also illustrated.Besides,we clarified the absorption mechanism and how WESP corona discharge oxidized NO,SO2 and Hg°,as well as the removal of NO2,SO2,and SO3 by HA-Na.Product analysis showed that NO2,SO2 and SO3 were converted into NO3 and SO_4~(2-),part of HgO was converted into Hg~(2+)in the cleaning water,and a small amount of Hg(NO3)2 and HgSO4 were converted into Hg~(2+),NO3 and SO_4~(2-).
Synergetic removal of multi-pollutantsDielectric barrier discharge(DBD)WESPMn-Cu/TiO2 catalyst
Shaoping Cui、Yujie Liao、Yuetong Zhao
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Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control,Department of Environmental Science and Engineering,North China Electric Power University,Baoding 071003,PR China
NSTL
