Characteristics of Low Temperature De-NOx Process with Non-thermal Plasma and NH3 Selective Catalytic Reduction (II)

저온 플라즈마 및 암모니아 선택적 환원공정을 활용한 저온 탈질공정의 특성(II)

  • Lee, Jae-Ok (Environment and Energy Research Division, Korea Institute of Machinery and Materials) ;
  • Song, Young-Hoon (Environment and Energy Research Division, Korea Institute of Machinery and Materials)
  • 이재옥 (한국기계연구원 환경.에너지기계연구본부) ;
  • 송영훈 (한국기계연구원 환경.에너지기계연구본부)
  • Received : 2006.05.30
  • Accepted : 2006.06.21
  • Published : 2006.08.10


Effects of water vapor, hydrocarbons, and CO, which are inevitably included in exhaust gases of combustion, on a combined $De-NO_{x}$ process of non-thermal plasma and $NH_{3}$ SCR (Selective Catalytic Reduction) have been investigated. Test results showed that fast SCR reaction enhanced $De-NO_{x}$ rate under the low temperature conditions, $150{\sim}200^{\circ}C$ The present test, however, showed that the role of the fast SCR reaction can be significantly suppressed by addition of hydrocarbons in a non-thermal plasma reactor. Detailed investigation verified that such suppressed role of the fast SCR reaction could be caused by the $NO_{2}/NO_{x}$ ratio modified by aldehydes produced from hydrocarbons in a non-thermal plasma reactor. In addition, the present study was confirmed that the effects of water vapor and CO were not noticeable compared with the hydrocarbon effects.


Grant : 플라즈마/촉매를 이용한 탈질공정기술개발

Supported by : 에너지관리공단


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