| 改性活性炭纤维负载锰铈复合氧化物低温选择性催化还原脱硝 |
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| 引用本文： | 张东辉, 王卓晖, 宋存义, 梁宝瑞. 改性活性炭纤维负载锰铈复合氧化物低温选择性催化还原脱硝[J]. 工程科学学报, 2012, 34(10): 1102-1107. DOI: 10.13374/j.issn1001-053x.2012.10.013 |
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| 作者姓名： | 张东辉 王卓晖 宋存义 梁宝瑞 |
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| 作者单位： | 1. 北京科技大学土木与环境工程学院, 北京 100083; |
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| 摘 要： | 采用Ce-MnOx/ACFN对烟气进行低温选择性催化还原脱硝实验,分别考察了活性炭纤维(ACF)改性、Ce-MnOx负载量和Ce/Mn摩尔比以及操作条件对脱硝效率的影响.在70~110℃条件下,Ce-MnOx/ACFN作为选择性催化还原脱硝的催化剂具有良好的活性,其脱硝效率随烟气温度升高而升高.催化剂载体活性炭纤维经硝酸改性后脱硝效率有明显提高.随着Ce-MnOx负载量增加和Ce/Mn摩尔比增加,脱硝效率先升高后降低.随着入口烟气NH3/NO摩尔比增加,脱硝效率先升高后趋于稳定.当入口烟气中水蒸气体积分数大于8%时,脱硝效率随其增加而降低.
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| 关 键 词： | 选择性催化还原 烟气 脱硝 锰铈复合氧化物 活性炭纤维 改性 |
| 收稿时间： | 2011-08-26 |
Low-temperature SCR denitrification with manganese-cerium composite oxide supported on modified ACF |
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| ZHANG Dong-hui, WANG Zhuo-hui, SONG Cun-yi, LIANG Bao-rui. Low-temperature SCR denitrification with manganese-cerium composite oxide supported on modified ACF[J]. Chinese Journal of Engineering, 2012, 34(10): 1102-1107. DOI: 10.13374/j.issn1001-053x.2012.10.013 |
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| Authors: | ZHANG Dong-hui WANG Zhuo-hui SONG Cun-yi LIANG Bao-rui |
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| Affiliation: | 1. School of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, China;2. China Coal & Coke Holdings Limited, Beijing 100011, China |
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| Abstract: | The low-temperature selective catalytic reduction (SCR) denitrification of a flue gas was carried out with Ce-MnOx/ACFN. The denitrification efficiencies were studied by modifying the activated carbon fibers (ACF) and changing the Ce-MnOx loading capacity, Ce/Mn molar ratio and operating conditions respectively. Ce-MnOx/ACFN as a SCR denitrification catalyst has good activity at 70-110℃. The denitrification efficiency increases with rising temperature, and it improves obviously after the ACF is modified by nitric acid. With the increasing of Ce-MnOx loading capacity and Ce/Mn molar ratio, the denitrification efficiency increases firstly and then decreases; but with the increasing of NH3/NO molar ratio in the inlet flue gas, it increases firstly and then tends to be stable. When the volume fraction of vapor in the inlet flue gas is above 8% the denitrification efficiency decreases with the vapor volume fraction increasing. |
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| Keywords: | selective catalytic reduction(SCR) flue gases denitrification manganese-cerium composite oxide activated carbon fiber(ACF) modification |
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