The emission of nitrogen oxides has a great environmental impact. It leads to Los Angeles type smog, and it recently has attracted attention as a source of ultrafine dust. The main sources of nitrogen oxides are internal combustion engines and industrial boilers. These emission sources are processes that are essential for human industrial activities, so the regulation of original use is impossible. Therefore, special control methods should be applied to reduce NOx emissions into the atmosphere. In this study, we investigated how the supply of ER and urea influences the removal of nitrogen oxides from SRF combustion boilers. Experimental results show that the removal efficiency of nitrogen oxides can be up to 80% under the conditions of ER 2.0 and a urea feed of 0.5 LPM.

Abstract
 I. 서 론
 II. 연구방법
  1. NOx 생성반응의 평형상수
  2. SRF 연소특성 실험
  3. SNCR의 운영
 III. 연구결과 및 고찰
  1. 평형상수의 확인
  2. 질소산화물의 생성
  3. SNCR의 de-NOx 효율
 IV. 결 론
 References

• 윤영식(고등기술연구원 플랜트엔지니어링센터) | Young-Sik Yoon (Plant Engineering Center, Institute for Advanced Engineering)
• 박동규(고등기술연구원 플랜트엔지니어링센터) | Dong-Kyu Park (Plant Engineering Center, Institute for Advanced Engineering)
• 구재회(고등기술연구원 플랜트엔지니어링센터) | Jae-Hoi Gu (Plant Engineering Center, Institute for Advanced Engineering)
• 박영수(고등기술연구원 플랜트엔지니어링센터) | Yeong-Su Park (Plant Engineering Center, Institute for Advanced Engineering) Corresponding author
• 서용칠(연세대학교 환경공학과) | Yong-Chil Seo (Department of Environmental Engineering, Yonsei University)