| 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 |
| |
| 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].北京科技大学学报,2012,34(10):1102-1107. |
| |
| 作者姓名： | 张东辉 王卓晖 宋存义 梁宝瑞 |
| |
| 作者单位： | 1. 北京科技大学土木与环境工程学院,北京,100083
2. 中煤焦化控股有限责任公司,北京,100011 |
| |
| 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.
|
| 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 |
Low-temperature SCR denitrification with manganese-cerium composite oxide supported on modified ACF |
| |
| 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].Journal of University of Science and Technology Beijing,2012,34(10):1102-1107. |
| |
| Authors: | ZHANG Dong-hui WANG Zhuo-hui SONG Cun-yi LIANG Bao-rui |
| |
| Institution: | 1) 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 |
| |
| 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. |
| |
| Keywords: | selective catalytic reduction(SCR) flue gases denitrification manganese-cerium composite oxide activated carbon fiber(ACF) modification |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
