배기가스 재순환이 적용된 비예혼합 연소시스템의 공해물질 배출 특성

초록

The non-premixed combustion system applying exhaust gas recirculation was investigated to achieve the low pollutant emission. In this study, it was studied the effects of EGR on NOx and CO emissions with various EGR methods and EGR ratios. As results, when EGR was applied, NOx and CO emission index decreased. In addition, FI-EGR showed a better result than AI-EGR in terms of pollutant reduction at the same EGR ratios. Especially, in the case of 20% of FI-EGR ratio at co-axial nozzle, NOx and CO emission index reduction rates were about 29%, 48%, and in the case of 15% of FI-EGR ratio at swirl burner, NOx and CO emission index reduction rates were about 61%, 28%.