Journal of the Korea Academia-Industrial cooperation Society (한국산학기술학회논문지)

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
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NOx Removal of NH3-SCR Catalysts with Operating Conditions

공정조건에 따른 NH3-SCR용 촉매의 질소산화물 제거특성

  • Park, Kwang Hee (Department of Environmental Energy Systems Engineering, Graduate School of Kyonggi University) ;
  • Cha, Wang Seog (School of civil and Environmental Engineering, Kunsan National University)
  • 박광희 (경기대학교 일반대학원 환경에너지시스템공학과) ;
  • 차왕석 (군산대학교 토목환경공학부)
  • Received : 2012.08.27
  • Accepted : 2012.11.08
  • Published : 2012.11.30
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Abstract

Performance of catalyst was studied with various operating conditions for selective catalytic reduction of $NO_x$ with $NH_3$. It is confirmed that catalysts containing Mn and Cu have a good efficiency in the usage of oxygen by the $H_2$-TPR analysis. In the case of catalyst #1, $NO_x$ conversion was decrease with the increase of reaction temperature. But in the case of catalyst #2, $NO_x$ conversion was increased and then remained constant with the increase of reaction temperature. This phenomenon is due to the difference of the $NH_3$ oxidation of both catalysts.

암모니아를 환원제로 사용하는 선택적촉매환원법(Selective Catalytic Reduction, SCR)에서 촉매의 다양한 공정조건에서의 질소산화물 전환특성을 조사하였다. $H_2$-TPR을 통해 Mn, Cu가 포함된 탈질촉매의 경우 저온에서의 산소사용능력으로 우수함을 확인할 수 있었다. 탈질촉매 #1의 경우 반응온도가 증가함에 따라 탈질효율이 감소하나 탈질촉매 #2의 경우 반응온도가 증가함에 따라 탈질효율이 증가하다가 일정하였다. 이러한 현상은 두 촉매의 $NH_3$ 산화능력의 차이에 의한 것이다.

Keywords

References

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