화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.22, No.1, 53-61, March, 2016
DOI10.7464/ksct.2016.22.1.053  Export Citation
Ni/Ru-X/Al2O3 (X=K or Mn) 촉매를 이용한 바이오매스 가스화 타르의 수증기개질
Steam Reforming of Tar Produced from Biomass Gasification Using Ni/Ru-X/Al2O3 (X=K or Mn) Catalyst
오건웅1, 박서윤2, 이재구3, 김용구3, 라호원3, 서명원3, 윤상준1, 3, †
  • 1과학기술연합대학원대학교 신에너지 및 시스템 기술, 34113 대전광역시 유성구 가정로 217
  • 2충북대학교 환경공학과, 28644 충북 청주시 서원구 충대로 1
  • 3한국에너지기술연구원 기후변화연구본부, 34129 대전광역시 유성구 가정로 152
Gunung Oh1, Seo Yoon Park2, Jae-Goo Lee3, Yong Ku Kim3, Ho Won Ra3, Myung Won Seo3, and Sang Jun Yoon1, 3, †
  • 1Advanced Energy Technology, Korea University of Science and Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 34113, Korea
  • 2Department of Environmental Engineering, Chungbuk National University, 1 Chungdae-ro, Seowon-gu, Cheongju-si, Chungbuk 28644, Korea
  • 3Climate Change Research Division, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea
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초록
바이오매스 가스화 시 발생하는 타르의 개질 연구가 다양한 Ni 촉매를 이용하여 수행되었다. 바이오매스 타르의 주요 성분인 톨루엔을 이용하여 실험실 규모의 수증기개질을 수행하였다. 고정층 형태의 개질기를 이용하였고 반응온도 범위는 400-800 ℃로 변화시켰다. Ni 촉매에 증진제로 Ru (0.6 wt%)와 Mn 또는 K (1 wt%)를 적용하였다. Ni/Ru-K/Al2O3 촉매가 Ni/Ru-Mn/Al2O3 촉매보다 전반적으로 높은 톨루엔 개질 전환 성능을 보였으며, X-선 회절분석과 열중량분석을 통해 촉매의 안정성을 확인하였다. 실험실 규모 연구 결과를 바탕으로 모노리스와 펠렛 형태의 촉매를 제작하고 1 톤/일 규모의 바이오매스 가스화 시스템에 적용하였다. 모노리스 촉매의 경우 Ni/Ru-K/Al2O3 촉매가 고온에서 특히 우수한 성능을 보였으며, Ni/Ru-Mn/Al2O3 촉매는 운전 시간 경과에 의한 활성저하가 관찰되었다. 펠렛 촉매의 경우 Ni/Ru-K/Al2O3 는 587 ℃에서 66.7%의 타르 전환율을 보였으며, 사용된 촉매의 재생 후 타르 개질 성능을 비교하였다. 본 연구에서 사용된 촉매 중 Ni/Ru-K/Al2O3 펠렛 촉매가 가장 우수한 촉매 활성과 안정성을 보였다.
Steam reforming of tar produced from biomass gasification was conducted using several Ni-based catalysts. In labscale, the catalytic steam reforming of toluene which is a major component of biomass tar was studied. A fixed bed reactor was used at various temperatures of 400-800 ℃. Ru (0.6 wt%) and Mn or K (1 wt%) were applied as a promoter in Ni based catalysts. Generally, Ni/Ru-K/Al2O3 catalyst shows higher performance on steam reforming of toluene than Ni/Ru-Mn/Al2O3 catalyst. Used catalysts were analyzed by XRD and TGA to detect sintering and carbon deposition. Base on the lab-scale studies, the monolith and pellet type catalysts were tested in 1 ton/day scale biomass gasification system. Ni/Ru-K/Al2O3 monolith catalyst shows high tar reforming performance at high temperature. In addition, Ni/Ru-Mn/Al2O3 monolith catalyst was showed deactivation with operation time. Reforming performance of Ni/Ru-K/Al2O3 pellet catalyst which showed 66.7% tar conversion at 587 ℃ was compared to regenerated one. Overall, Ni/Ru-K/Al2O3 pellet catalyst shows higher stability and performance than other used catalysts.
Keywords:Steam reforming;Toluene;Biomass Tar;Gasification
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