| 尿素-SCR技术对NOx转化率和NH3排放的影响 |
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| 引用本文： | 郭红松,关敏,景晓军,包俊江.尿素-SCR技术对NOx转化率和NH3排放的影响[J].车用发动机,2011(3):55-59,64. |
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| 作者姓名： | 郭红松 关敏 景晓军 包俊江 |
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| 作者单位： | 中国汽车技术研究中心;环境保护部机动车排污监控中心; |
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| 基金项目： | 先进柴油机排放测试技术研究(中国汽车技术研究中心项目)(10110209) |
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| 摘 要： | 在AVL发动机台架上就尿素-SCR技术对NOx转化率和NH3排放的影响进行了试验,催化剂为钒氧化物,尿素质量分数从0变化到50%.研究发现,排气温度、空速、尿素浓度、尿素喷射量对NOx转化率和NH3排放有着重要影响:排气温度升高,NOx转化率先升高后下降,400～450℃是转折点;提高排气空速,NOx转化率线性下降,N...
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| 关 键 词： | 柴油机 尿素 选择性催化还原 氮氧化物 转化率 氨气 |
The Influence of Urea-SCR Technology on NO_x Conversion Rate and NH_3 Emission |
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| GUO Hong-song,GUAN Min,JING Xiao-jun,BAO Jun-jiang.The Influence of Urea-SCR Technology on NO_x Conversion Rate and NH_3 Emission[J].Vehicle Engine,2011(3):55-59,64. |
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| Authors: | GUO Hong-song GUAN Min JING Xiao-jun BAO Jun-jiang |
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| Institution: | GUO Hong-song1,GUAN Min2,JING Xiao-jun1,BAO Jun-jiang1(1.China Automotive Technology and Research Center,Tianjin 300162,China,2.Vehicle Emission Control Center of Environmental Protection Ministry,Beijing 100012,China) |
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| Abstract: | The influences of urea-SCR technology on NOx conversion rate and NH3 emission were studied by the experiment of AVL engine bench.The used catalyst was vanadium oxide.The urea mass concentration increased from 0 to 50%.The result shows that the temperature and space velocity of exhaust and the concentration and injection quantity of urea have important influences on NOx conversion rate and NH3 emission.When the exhaust temperature rises,the NOx conversion rate first increases and then decreases,and its turni... |
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| Keywords: | diesel engine urea SCR nitrogen oxides conversion rate ammonia |
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