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

The Korea Academia-Industrial cooperation Society (한국산학기술학회)
권호 표지
DOI QR코드

DOI QR Code

Characteristic Evaluation of SCR catalyst using Aluminum dross

알루미늄 폐드로스를 활용한 SCR 탈질촉매 제조 및 특성평가

  • Bae, Min A (Green Technology Center, Korea Institute of Industrial Technology (KITECH)) ;
  • Kim, Hong Dae (Green Technology Center, Korea Institute of Industrial Technology (KITECH)) ;
  • Lee, Man Sig (Green Technology Center, Korea Institute of Industrial Technology (KITECH))
  • 배민아 (한국생산기술연구원 친환경청정기술센터) ;
  • 김홍대 (한국생산기술연구원 친환경청정기술센터) ;
  • 이만식 (한국생산기술연구원 친환경청정기술센터)
  • Received : 2013.07.18
  • Accepted : 2013.10.10
  • Published : 2013.10.31
Download PDF
⟨ Previous Next ⟩

Abstract

Aluminum dross is formation at the surface of the molten metal as the latter reacts with the furnace atmosphere and it was an unavoidable by-product of the aluminum production process. However aluminum dross was usually landfilled or disposed without treatment, causing much environmental damage. The purpose of this study is to investigate the possibility of ceramic catalyst support using recycled Al dross. The recycled Al dross was made into SCR catalyst by mixing with $WO_3$, $V_2O_5$ and $TiO_2$. The $V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR catalyst was observed with XRF, XRD and BET. $V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR strength was measured by Universal Testing Machine(UTM). As the added $Al_2O_3$, streagth is increased. And the NOx removal activity was observed by MR(Micro-Reactor). The temperatures ranging from $350^{\circ}C$ and $400^{\circ}C$, $V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR catalyst De-NOx performance result of showed excellent activity over 90% at application condition.

알루미늄 금속이 용해될 시 대기와 접촉한 용탕 표면에서 생성되는 알루미늄 드로스는 알루미늄 생산 공정에서 발생되는 필수적인 부산물이다. 그러나 알루미늄 드로스의 대부분은 매립에 의한 처리가 이루어지고 있어 환경오염의 원인이 되고 있다. 본 연구에서는 알루미늄 드로스를 재자원화 하여 SCR(Selective Catalytic Reduction) 촉매의 담체에 일부 대체하는 연구를 진행하였다. 재활용 된 알루미늄 드로스를 촉매 원료 $WO_3$, $V_2O_5$, $TiO_2$와 혼합하여 $V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR촉매를 제조하였다. 제조 된 $V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR촉매는 XRD, XRF, BET 분석을 통해 특성평가를 진행 하였으며, 내구성 평가를 통해 $Al_2O_3$ 함량이 증가할수록 V$V_2O_5-WO_3/TiO_2-Al_2O_3$ SCR촉매의 강도가 증가하는 것을 확인 할 수 있었다. MR(Micro-Reactor)을 이용한 촉매 활성평가를 진행하여 촉매의 실사용 온도 $350^{\circ}C{\sim}400^{\circ}C$에서 90%이상의 촉매효율을 나타내었다.

Keywords

References

  1. Sang Hwan Kim, Won Hun Park, "A Study on the Development of Flue Gas Clean up Technology for Air Pollution Control", pp.93-122, Korea Institute of Science and Technology, 1991.
  2. R. Andrew, Hind, K. Suresh, Bhargava, and Stelhen C. Grocolt "The surface chemistry of Bayer process solids: a review", Science direct, Australia, Vol. 146, pp.359-374, 1999. DOI: http://dx.doi.org/10.1016/S0927-7757(98)00798-5
  3. Gi-hyeon Kang, "Effect of $TiO_{2}$ Properties on the NOx Reduction Efficiency in the SCR De-NOx Catalysts Containing Mainly $TiO_{2}$", Gyeongsang National University, 2009
  4. Bang Jin Jang, "The research of reaction characteristic and the improvement of efficiency of $TiO_{2}$ Catalyst for SCR in high temperature", Graduate School Chonnam National university, 2008
  5. Se Min Park, "Selective Catalytic Reduction of Nitrogen Oxides Promoted by Storage Function", Graduate School Chonnam National university, 2010
  6. Hyungkyu Park, Hooin Lee and Joonsoo Kim, "Preparation of Aluminum Hydroxide by Recycling of Aluminum Dross", Resources Recycling, Vol. 10, pp.8-15, 2001
  7. V. I. Parvulescu, S. Boghosian, V. Parulescu, S.M. Jung, and P. Grange, "Selective catalytic reduction of NO with $NH_{3}$ over mesoporous $V_{2}O_{5}$-$TiO_{2}$-$SiO_{2}$ catalysts", Journal Catalysis, Vol. 217, pp.172-185, 2003 DOI: http://dx.doi.org/10.1016/S0021-9517(03)00028-9
  8. S. T. Choo, Y. G. Lee, I. S. Nam, S. W. Ham, and J. B. Lee, "Characteristics of $V_{2}O_{5}$ supported on sulfated $TiO_{2}$ for selective catalytic reduction of NO by $NH_{3}$", Applied. Catalysis, Vol. 200, pp.117-188, 2000 https://doi.org/10.1016/S0926-860X(00)00646-3
  9. San Sig Park, "Degradation characteristics and improvement of durability for $TiO_{2}$ based high efficiency honeycomb type SCR catalyst", Gyeongsang National University, 2010