분말형 SCR 저온촉매를 이용한 백필터 공정에서의 NOx 제거특성 = Characteristics of NOx Abatement by the Filter Bag with Low Temperature Powder Type SCR Catalysts

다국어 초록 (Multilingual Abstract)

Selective catalytic reduction for NOx abatement from MSW (Municipal Solid Waste) incineration flue gas was performed by powder type catalysts (MnOx and V2O5/TiO2) on filter bag system at low temperature (≤250℃) under the presence of H2O and SO2. In case of the powder (300 mesh) type V2O5/TiO2 catalyst, removal efficiency of NOx was increased from 85 to 95% with increase in temperature from 230℃ to 250℃. However, that of MnOx type catalyst was decreased by 40% about all temperature range (150 ~ 250℃). MnOx type catalyst was highly influenced by H2O, SO2 compared with V2O5/TiO2 catalyst. In accordance with the above results, the powder type V2O5/TiO2 catalyst was selected for the real De-NOx process of MSW incineration flue gases. In the real process application (38,000 N㎥/h), average removal efficiency of NOx by powder type V2O5/TiO2 catalyst on the filter support system was 68% at 180℃.

참고문헌 (Reference)

1 김정헌, "흡착/촉매제에 의한 NOx 및 다이옥신 동시제거" 한국폐기물자원순환학회 25 (25): 683-689, 2008

2 홍성호, "저온탈질시스템 시범화 적용연구" 8 (8): 215-11, 2005

3 이준엽, "저온탈질 특성을 갖는 TiO2/Mn계 압출촉매의 발전소배가스 질소산화물 제거 실증연구" 443-444, 2004

4 이상진, "소각로 SCR 폐탈질 촉매의 피독과 효율재생에 관한 연구" 한국공업화학회 19 (19): 259-263, 2008

5 김경호, "배기가스 탈질기수(SCR)의 연구동향과 나노촉매" 10 (10): 45-59, 2007

6 홍성창, "배가스 중 SO2가 V/TiO2 SCR활성에 미치는 영향" 한국공업화학회 17 (17): 490-497, 2006

7 한국전력기술, "TiO2/Mn계 금속산화물 압출성형 촉매를 이용한 LNG 복합화력발전소 배가스 탈질기술" 환경기술검증보고서 21-, 2004

8 Huang, J., "Selective catalytic reduction of NO with NH3 at low temperatures over iron and manganese oxides supported on mesoporous silica" 78 : 309-314, 2008

9 Kim, B. H., "Removal characteristics of PCDDs/Fs from municipal solid waste incinerator by dual bag filter (DBF) system" 86 (86): 813-819, 2007

10 최성우, "Mn이 첨가된 V2O5/TiO2 촉매상에서 질소산화물의 저온 SCR 특성" 한국환경과학회 13 (13): 537-542, 2004

11 Jiang, B., "Low-temperature selective catalytic reduction of NO on MnOx/TiO2 prepared by different methods" 162 : 1249-1254, 2009

12 Huang, Z., "Inhibition effect of H2O on V2O5/AC catalyst for catalytic reduction of NO with NH3 at low temperature" 63 : 260-265, 2006

13 Huang, Z., "Combined effect of H2O and SO2 on V2O5/AC catalysts for NO reduction with ammonia at lower temperatures" 39 : 361-368, 2002

14 Long, R. Q., "Catalytic performance and characterization of VO2+-exchanged titaniapillared clays for selective catalytic reduction of nitric oxide with ammonia" 196 : 73-85, 2000