Kinetic Model and Simulation of Promoted Selective Non-catalytic Reduction by Sodium Carbonate

查看全文 作　　者：[1]韩奎华;[1]路春美

机构地区：[1]School of Energy and Power Engineering, Shandong University, Jinan 250061, China

出　　处：《Chinese Journal of Chemical Engineering》索引2007年第15卷第4期,共8页

基　　金：Supported by the Natural Science Foundation of Shandong Province (No.Z2006F04) and Science and Technology Program for Environment Protection of Shandong Province (No.2006046). 摘　　要：The detailed kinetic model of selective non-catalytic reduction(SNCR)of nitric oxide,including so- dium species reactions,was developed on the basis of recent studies on thermal DeNOx mechanism,NOxOUT mechanism and promotion mechanism of Na2CO3.The model was validated by comparison with several experi- mental findings,thus providing an effective tool for the primary and promoted SNCR process simulation.Experi- mental and simulated results show part-per-million level of sodium carbonate enhances NO removal efficiency and extend the effective SNCR temperature range in comparison with use of a nitrogen agent alone.The kinetic model- ing,sensitivity and rate-of-production analysis suggest that the performance improvement can be explained as ho- mogeneous sodium species reactions producing more reactive OH radicals.The net result of sodium species reac- tions is conversion of H2O and inactive HO2 radicals into reactive OH radicals,i.e.H2O+HO2=3OH,which en- hances the SNCR performance of nitrogen agents by mainly increasing the production rate of NH2 radicals.More- over,N2O and CO are eliminated diversely via the reactions Na+N2O=NaO+N2,NaO+CO=Na+CO2 and NaO2+CO=NaO+CO2,in the promoted SNCR process,especially in the NOxOUT process. 关键词：动力模型选择性非接触反应还原氮氧化物模拟钠碳酸盐机制

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Kinetic Model and Simulation of Promoted Selective Non-catalytic Reduction by Sodium Carbonate

参考文献(23)

引证文献(32)

耦合文献(84)

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