为了考察烧结过程中烧结矿各主要组分对NO脱除反应的影响,研究了有O2和无O2条件下CO还原NO的反应规律,并在还原性气氛下对烧结矿催化还原NO进行了动力学分析.在500～1 000℃,分别以CaO、MgO,FezO3和烧结矿为填料层,在固定床石英反应器中研究NO的脱除规律.研究结果表明,不同填料对CO还原NO反应催化作用的强弱顺序为COO＞烧结矿＞Fe2O3＞MgO.烧结矿作用下,CO体积分数为1.2%时,NO的转化率可达90%以上,CO还原NO反应的Arrhenius曲线以780℃为界分为两段,两段的反应机理不同.反应体系中O2存在时不利于NO还原反应的进行.
参考文献
| [1] | 苏亚欣;毛玉茹;徐璋.燃煤氮氧化合物排放控制技术[M].北京:化学工业出版社,2005 |
| [2] | Furusawa T;Tsunoda M;Tsujimura M .Nitric Oxide Reduction by Char and Carbon Monoxide:Fundamental Kinetica of Nitric Oxide Reduction in Fluidized Bed Combustion of Coal[J].Fuel,1985,64(09):11306. |
| [3] | 周浩生,陆继东,周琥,李莉.一氧化碳作用下铁对一氧化氮的催化还原实验与动力学过程分析[J].热能动力工程,2002(01):86-89. |
| [4] | Furusawa T;Koyarna M;Tsujimura M .Nitric Oxide Reduetion by Carbon Monoxide Over Calcined Limestone Enhanced by Simultaneous Sulphur Retention[J].Fuel,1985,64(03):413. |
| [5] | Kim D J;Amend L E;Leckner B .Influence of SO2 on the NO/N2O Chemistry in Fluidized Bed Combustion[J].FUEL,1993,72(04):565. |
| [6] | ZHAO Zi-bin;LI Wen;QIU Jie-shan .Influence of Na and Ca on the Emission of NO2 During Coal Combustion[J].Fuel,2006,85(05):601. |
| [7] | Hayhurst A N;Lawrence A D .The Reduction of the Nitrogen Oxides NO and N2O to Molecular Nitrogen in the Presence of Iron,Its Oxides,and Carbon Monoxide in a Hot Fluidized Bed[J].Combustion and Flame,1997,110(03):351. |
| [8] | Mo C L;Teo C S;Hamilton L .Adding Hydrocarbons in Row Mix to Reduce NOr Emission Iron Ore Sintering Process[J].ISU International,1997,37(04):350. |
| [9] | Berger A;Rotzoll G .Kinetics of NO Reduction by CO on Quartz Glass Sudaces[J].Fuel,1995,74(03):452. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%