| 脱硝催化剂孔结构及其脱硝特性的研究 |
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| 引用本文： | 缪明烽,钟秦,赵金,李云涛.脱硝催化剂孔结构及其脱硝特性的研究[J].污染防治技术,2011(4). |
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| 作者姓名： | 缪明烽 钟秦 赵金 李云涛 |
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| 作者单位： | 中环(中国)工程有限公司;南京理工大学化工学院; |
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| 摘 要： | 选择性催化还原脱硝技术(SCR)所采用的催化剂多数为多孔介质,其内部孔隙有助于提高催化剂的反应活性。文中采用浸渍负载法,通过改变制备温度制备出不同孔结构的催化剂样品,采用N2吸附法对其孔结构进行测定和分析,并对不同孔结构的催化剂样品进行了脱硝实验。研究表明:煅烧及干燥温度对催化剂孔结构有很大的影响,比表面积越大,其催化剂内的孔分布宽度越窄,平均孔径越小;在活性温度范围(360～390℃)内,脱硝过程中主要是属于化学反应过程控制,脱硝效果随着比表面积的增大而增强;在非活性温度范围内,脱硝过程同时受到气体扩散过程及化学反应过程控制。
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| 关 键 词： | SCR 脱硝 催化剂 孔结构 多孔介质 |
Study on Denitration Catalyst Pore Structure and the Denitration Characteristics |
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| MIAO Ming-feng,ZHONG Qin,ZHAO Jin,LI Yun-tao.Study on Denitration Catalyst Pore Structure and the Denitration Characteristics[J].Pollution Control Technology,2011(4). |
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| Authors: | MIAO Ming-feng ZHONG Qin ZHAO Jin LI Yun-tao |
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| Institution: | MIAO Ming-feng1,ZHONG Qin2,ZHAO Jin1,LI Yun-tao1(1.GCL Engineering Limited,Nanjing,Jiangsu 210008,China,2.School of Chemical Engineering,Nanjing University of Science and Technology,Jiangsu 210094,China) |
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| Abstract: | The catalyst adopted in NOx Selective Catalytic Reduction Technology(SCR)is the majority of porous media,its internal pore contribute to the improvement of catalyst reactivity.The article used infused method and load method,prepared the samples of different catalyst pore structure by changing the preparation temperature,using N2 adsorption method for determination and analysis of its pore structure,and processed the denitration experiment aimed at different pore structure of catalyst samples.Study shows tha... |
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| Keywords: | SCR denitrification catalyst pore structure porous media |
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