Investigation on the Simulation of SCR Chemical Reaction
With the global environment worsening and the consciousness of protecting environment strengthening, the limitation of noxious gas from diesel engines is becoming more and more strictly. Selective catalytic reduction (SCR) aftertreatment system has been applied to reduce Nitrogen Oxides (NOx) as a key technology. The urea solution injected into the tailpipe decomposes to ammonia, which will react with NOx on the surface of SCR catalyst. The main purpose of this paper is to study the effect of different concentrations of NO, NO2 and NH3 on the reactions taking place with SCR catalyst by simulation. Based on mass transfer equations and chemical kinetics the simulation results predict the concentrations of NO, NO2 and NH3 accurately. The mass conservation equations of species are solved by the software MATLAB. Some regulations can be revealed to improve the NOx conversion efficiency and reduced the NH3 slip.
SCR NOx reduction simulation MATLAB
Wang Wei Xiao Youhong Tian Xinna
College of Power and Energy, Harbin Engineering University,Harbin, Heilongjiang, P.R China
国际会议
厦门
英文
193-197
2012-06-05（万方平台首次上网日期，不代表论文的发表时间）