| V-W-Ti-Si/堇青石催化剂柴油机脱硝反应动力学 |
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| 引用本文： | 吴撼明,张浩浩,高兰君,沈伯雄,杨程.V-W-Ti-Si/堇青石催化剂柴油机脱硝反应动力学[J].化学反应工程与工艺,2017,33(3). |
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| 作者姓名： | 吴撼明 张浩浩 高兰君 沈伯雄 杨程 |
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| 作者单位： | 1. 河北工业大学能源与环境工程学院,天津,300401;2. 南开大学环境科学与工程学院,天津,300701 |
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| 基金项目： | 国家自然科学基金，河北省重点基金 |
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| 摘 要： | 采用固定床反应器,以自制的V-W-Ti-Si/堇青石为催化剂,在消除内外扩散影响的基础上,考察了氨选择性催化还原反应(NH_3-SCR)过程,建立了幂指数型的脱硝反应动力学模型,并通过线性拟合确定了模型参数。结果表明,在自制的V-W-Ti-Si/堇青石催化剂上,NO,NH_3和O_2的反应级数分别为0.93,0,0.24,活化能为25.99 kJ/mol,模型拟合的相对误差在10%左右,可用于指导柴油机尾气脱硝催化剂反应过程研究与开发。
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| 关 键 词： | 柴油机尾气 脱硝 选择性催化还原 V-W-Ti-Si/堇青石催化剂 |
Intrinsic Kinetics of V-W-Ti-Si/Cordierite Catalyst for Diesel Engine Denitrification |
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| Wu Hanming,Zhang Haohao,Gao Lanjun,Shen Boxiong,Yang Cheng.Intrinsic Kinetics of V-W-Ti-Si/Cordierite Catalyst for Diesel Engine Denitrification[J].Chemical Reaction Engineering and Technology,2017,33(3). |
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| Authors: | Wu Hanming Zhang Haohao Gao Lanjun Shen Boxiong Yang Cheng |
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| Abstract: | The V-W-Ti-Si/cordierite self-made catalyst were using to study the NH3-SCR (NH3-selective catalytic reduction) process of diesel engine on the basis of eliminating the influence of internal and external diffusion by using a fixed-bed reactor.The power exponential denitrations reaction kinetic model was established,and the model parameters were determined by linear fitting method.The results showed that the reaction order of NO,NH3 and O2 in the NH3-SCR reaction were 0.93,0,0.24 respectively.The activation energy of the catalyst was 25.99 kJ/mol.The relative error of the model fitting was around 10％.It can be used to guide diesel engine exhaust denitrification catalyst reaction process research and development. |
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| Keywords: | diesel engine exhaust denitration selective catalytic reduction V-W-Ti-Si/cordierite catalyst |
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