NH₃-SCR 반응기 내에서의 NH₃/NOx 및 SCR 촉매 온도가 DeNOx 성능에 미치는 영향

Selective Catalytic Reduction (SCR) technology is well-known to be effective for the reduction of NOx emission. So car manufacturers has adopted Ures-SCR system to be satisfied with emission regulation. This paper discusses the effective of NH₃/NOx ratio and SCR catalyst temperature in the NH₃-SCR reactor on DeNOx performance. So it is shown the characteristic of NOx conversion and ammonia slip using the NH₃ instead of Urea-Solution. From the result of this study, it is found to optimize NH₃/NOx ratio to have the best case of high NOx conversion and low ammonia slip at variable SCR catalyst temperatures. Lastly, it is also found the characteristics of NOx conversion and ammonia slip with compared with Urea.