Vol.16, No.3, 2020, pp.615-621, doi:10.32604/fdmp.2020.09654
Influence of Steam and Sulfide on High Temperature Selective Catalytic Reduction
  • Jiyuan Zhang1, Linbo Wang1, Chengqiang Zhang1, Shuzhan Bai2,*
1 R & D Center, Weichai Power Co. Ltd., Weifang, 261041, China
2 School of Energy and Power Engineering, Shandong University, Jinan, 250061, China
* Corresponding Author: Shuzhan Bai. Email: baishuzhan@sdu.edu.cn
(This article belongs to this Special Issue: High-Speed and High-Temperature Flows)
Received 14 January 2020; Accepted 24 March 2020; Issue published 25 May 2020
The influences of steam and sulfide on the efficiency of NOx reduction using ammonia (NH3) over the nanometer-class V-W/Ti catalyst in conditions of high temperature is experimentally investigated using a steady-flow reactor. The results showed that selective catalytic reduction (SCR) is inhibited by H2O at low temperature, but higher NO conversion efficiency is achieved at high temperature since the reaction of NH3 oxidized by O2 to NOx is inhibited by H2O. The activity of SCR is promoted by SO2 in the temperature range of 200~500° C, the NO conversion efficiency was improved to 98% from 94% by adding SO2. SCR would be improved at 350~500°C when H2O and SO2 exist at the same time. Furthermore, the positive influence to the NOx conversion was proved in the presence of H2O and SO2 as a result of the European Stationary Cycle test.
High temperature; selective catalytic reduction; efficiency
Cite This Article
Zhang, J., Wang, L., Zhang, C., Bai, S. (2020). Influence of Steam and Sulfide on High Temperature Selective Catalytic Reduction. FDMP-Fluid Dynamics & Materials Processing, 16(3), 615–621.