欢迎访问过程工程学报, 今天是

过程工程学报 ›› 2018, Vol. 18 ›› Issue (2): 350-355.DOI: 10.12034/j.issn.1009-606X.217266

• 过程与工艺 • 上一篇    下一篇

铁矿石尾矿粉催化还原NO的实验研究

韩云龙1,2*， 李迎根1， 郑 昭1，张 浩1， 钱付平1，胡永梅1     

  1. 1. 安徽工业大学建筑工程学院，安徽 马鞍山 243032；2. 东南大学能源热转换及其过程测控教育部重点实验室，江苏 南京 210096
  • 收稿日期:2017-06-28 修回日期:2017-09-01 出版日期:2018-04-22 发布日期:2018-04-10
  • 通讯作者: 韩云龙 hanlongy@163.com

Experimental Study of Catalytic Reduction of NO over Iron Ore Tailing Powder

Yunlong HAN1,2*, Yinggen LI1, Zhao ZHENG1, Hao ZHANG1, Fuping QIAN1, Yongmei HU1   

  1. 1. School of Civil Engineering and Architecture, Anhui University of Technology, Ma?anshan, Anhui 243032, China; 2. Key Lab of Energy Thermal Conversion and Control, Ministry of Education, Southeast University, Nanjing, Jiangsu 210096, China
  • Received:2017-06-28 Revised:2017-09-01 Online:2018-04-22 Published:2018-04-10
  • Contact: HAN Yun-long hanlongy@163.com

PDF

摘要： 以马鞍山钢铁集团南山矿铁矿石尾矿为主要原料制备无载体催化剂，对其进行了XRF, BET和XRD表征，并于电加热石英玻璃管固定床中实验研究了催化剂对NH3还原NO的催化活性. 结果表明，用铁尾矿所制催化剂在反应温度500?600℃下具有良好的催化活性，600℃时催化还原率达97.5%，且粒径越小催化还原率越高；氧含量对催化还原率有较大影响，350℃时增加氧含量可提高催化还原率，500℃时增加氧含量会降低催化还原率；氧化铁作为主要活性组分，在催化剂中含量越高催化还原率越高，但氧化铁高温时易烧结，会降低催化还原率.

关键词: 催化还原, 铁矿石尾矿, 催化剂, 氮氧化物

Abstract: Unsupported catalyst was prepared by iron ore tailing selected from Nanshan mine of Ma?anshan iron & steel company limited. The catalysts were characterized by XRF, BET and XRD techniques. Experiments of catalytic reduction of NO over catalyst with NH3 were carried out in a quartz glass fixed-bed reactor. The results showed that the catalyst prepared by iron ore tailing presents a good catalytic activity for NO reduction at 500?600℃. The catalytic reduction rate can reach to 97.5% at 600℃. Moreover, the smaller the particle size, the higher the catalytic reduction rate. Increasing oxygen content can increase catalytic reduction rate of NO at 350℃. However, high oxygen content can decrease catalytic reduction rate of NO at 500℃. The higher the iron oxide content, the higher the catalytic reduction rate. But at high temperature, sintering of iron oxide can decrease the catalytic reduction rate.

Key words: Catalytic reduction, iron ore tailing, catalyst, NOx