摘要
进行了CO作为还原剂选择性催化还原低温烟气中NO_x的实验.主要考察了反应温度、活性金属负载质量比、活性金属种类3个因素对脱硝效率及CO转化率的影响.结果表明:考察温度窗口内(100~180℃),随着反应温度的升高,Cu-Co/Al_2O_3催化剂的NO脱除率逐渐升高,Cu-Mn/Al_2O_3催化剂的NO脱除率先升高后降低,CO转化率不断增大;随着活性金属负载质量比的改变,实验工况下Cu-Co/Al_2O_3和Cu-Mn/Al_2O_3催化剂活性金属负载质量比均为1.5时催化剂的脱硝性能最优;Cu-Mn/Al_2O_3的整体NO脱除率高于Cu-Co/Al_2O_3;8种催化剂中活性金属负载质量比为1.5的Cu-Mn/Al_2O_3催化剂在160℃下脱硝效果最好.
The experiment of selective catalytic reduction of NOX with CO in flue gas at low temperature was carried out. The study focused on the effect of action temperature,the load proportion of active metal and the type of active metals on the denitrification efficiency and the conversion of CO. The results show that,within the experimental temperature range,with the rise of reaction temperature,the NO conversion with Cu- Co/Al2O3 catalyst increases,the conversion of NO increases at first and then decreases with Cu-Mn/Al2O3 catalyst,and the conversion of CO increases. In the experimental conditions,as the load proportion of active metal changes,when the m （ Cu ） /m （ Co ） and m （ Cu ） /m （ Mn） is 1. 5, the catalyst has the best denitrification efficiency. The overall NO conversion with Cu-Mn Al2O3 is better than that with Cu- Cu Al2O3. Comprehensive comparison of the eight catalysts shows that the Cu-Mn Al2 O3 catalyst with 1. 5 load proportion of active metal has the best denitrification efficiency at 160 ℃ .
出处
《东北大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2017年第7期972-977,共6页
Journal of Northeastern University(Natural Science)
基金
国家自然科学基金资助项目(51576035)
