上海交通大学学报

上海交通大学学报（自然版） ›› 2014, Vol. 48 ›› Issue (06): 741-745.

• 能源与动力工程 •    下一篇

以二甲醚重整气为还原剂的NOx储存还原性能

张武高,陈晓玲,吴敏超
  

  1.  (上海交通大学 机械与动力工程学院； 动力机械与工程教育部重点试验室， 上海 200240)
     
  • 收稿日期:2013-07-21 出版日期:2014-06-30 发布日期:2014-06-30
  • 基金资助:

    国家自然科学基金资助项目（51176119;50976070）

Experimental Study of NOx Storage/Reduction Performance Using the Mixture of Stream Reforming of DME as Reducer

ZHANG Wugao,CHEN Xiaoling,WU MinChao
  

  1. （Key Laboratory for Power Machinery and Engineering of the Ministry of Education; School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai 200240, China)
  • Received:2013-07-21 Online:2014-06-30 Published:2014-06-30

摘要：

利用二甲醚(DME)水蒸气重整制氢(SR)为氮氧化物存储还原（NSR）技术提供还原剂，以去除DME发动机中NOx排放时，须考虑二甲醚水蒸气重整(DMESR)对NOx转化率的影响.以Pt/Co-BaO/Al2O3为NSR催化剂，以CNZ-1/HZSM-5/Ga2O3为DME-SR的催化剂，试验研究了以DME重整气为还原剂的NOx存储还原性能，及水蒸气对NSR性能的影响.结果表明，将SR与NSR联用，可明显提高NOx转化率，在250 ℃时转化率可提高11%；尽管水蒸气对NOx的吸附有一定的抑制作用，但水蒸气参与DME重整，对NOx的转化率具有明显的促进作用.

 
 

关键词: 二甲醚, 水蒸气重整, NOx存储还原, 水蒸气

Abstract:

Dimethyl ether(DME) steam reforming (SR) could provide excellent reducing agent of H2 for NOx storage and reduction (NSR) technology to remove nitrogen oxide (NOx) emissions from DME engine. This paper studied the influence of DME reforming gas on the performance of NSR by using Pt/Co-BaO/Al2O3 as NSR catalyst and CNZ-1/HZSM-5/Ga2O3 as the catalyst of DME steam reforming. The experimental result shows that the NSR performance is improved evidently by using the DME reforming gas as reductant. The conversion efficiency could be raised by 11%. Although the water vapor has some inhibition effect on the NOx adsorption, it participates in DME reforming and could produce evident promotion on the NOx conversion rate of NSR.

Key words: dimethyl ether, steam reforming, NOx storage and reduction, water steam

中图分类号: