한국수소및신에너지학회논문집 (Transactions of the Korean hydrogen and new energy society)

  • 제15권1호
  • /
  • Pages.46-53
  • /
  • 2004
  • /
  • 1738-7264(pISSN)
  • /
  • 2288-7407(eISSN)
한국수소및신에너지학회 (The Korean Hydrogen and New Energy Society)
권호 표지

Chemical-looping combustion을 위한 cobalt oxide계 산소운반체의 산화 환원특성

Redox Characteristics of Cobalt Oxide based Oxygen Carriers for Chemical-Looping Combustion

  • 이진배 (충남대학교 대학원 공업화학과) ;
  • 박주식 (한국에너지기술연구원) ;
  • 최상일 (한국에너지기술연구원) ;
  • 송영욱 (충남대학교 대학원 공업화학과) ;
  • 양현수 (충남대학교 대학원 공업화학과) ;
  • 김영호 (충남대학교 대학원 공업화학과)
  • Lee, J.B. (Department of Fine Chemicals Engineering & Chemistry, Chung nam National University) ;
  • Park, C.S. (Korea Institute of Energy Research) ;
  • Choi, S.I. (Korea Institute of Energy Research) ;
  • Song, Y.W. (Department of Fine Chemicals Engineering & Chemistry, Chung nam National University) ;
  • Yang, H.S. (Department of Fine Chemicals Engineering & Chemistry, Chung nam National University) ;
  • Kim, Y.H. (Department of Fine Chemicals Engineering & Chemistry, Chung nam National University)
  • 발행 : 2004.03.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

Redox characteristics of cobalt oxide-based oxygen carriers were tested for chemical-looping combustion. Cobalt oxide was chosen as active metal oxide and $CoAl_2O_4$ was compared with YSZ(yttria-stabilized zirconia) as a binder. Cobalt oxide/$CoAl_2O_4$ was prepared by sol-gel method. Hydrogen fuel was reacted with metal oxide and then the reduced metal was successively oxidized by air. The effects of reaction temperature were measured and the regenerabilies during 10 cycles were examined by a TGA. In regenerability of cobalt oxide/YSZ and cobalt oxide/$CoAl_2O_4$, after they showed above 90% conversion in first reduction, they were stabilized in about 70-75% conversion. From reaction rate constant obtained, the activation energies of cobalt oxide/YSZ in oxidation and reduction were 51.47kJ/mol and 7.71kJ/mol respectively.

키워드

과제정보

연구 과제 주관 기관 : 에너지기술연구원

참고문헌

  1. A. Lyngfelt, B. Leckner, and T. Mattisson : 'A fluidized-bed combustion process with inherent $CO_2$ separation; application of chemical-looping combustion', Chem. Eng. Sci., Vol. 56, 2001, pp. 3101-3113 https://doi.org/10.1016/S0009-2509(01)00007-0
  2. A. Lyngfelt and B. Leckner : 'Technologies for $CO_2$ separation', Minisymposium on Carbon Dioxide Capture and Storage, 1999, pp. 25-34
  3. M. Ishida and H. Jin : 'A new advanced power-generation system using chemical-looping combustion', Energy-Int. J., Vol. 19, 1994, pp. 415 https://doi.org/10.1016/0360-5442(94)90120-1
  4. M. Ishida, H. Jin, and T. Okamoto : 'A fundamental study of a new kind of medium material for chemical-looping combustion', Energy & Fuels, Vol. 10, 1996, pp. 958-963 https://doi.org/10.1021/ef950173n
  5. H. Jin, T. Okamoto, and M. Ishida : 'Development of a novel chemical-looping combustion: Synthesis of a looping material with a double metal oxide of CoO-NiO', Energy & Fuels, Vol. 12, 1998, pp. 1272-1277 https://doi.org/10.1021/ef980080g
  6. M. Ishida and H. Jin : 'A novel chemical-looping combustor without $NO_x$ formation', Ind. Eng. Chem. Res., Vol. 35, 1996, pp. 2469-2472 https://doi.org/10.1021/ie950680s
  7. M. Ishida and H. Jin : ' https://doi.org/10.1016/0196-8904(96)00027-1
  8. M. Ishida and H. Jin : 'A novel combustor based on chemical-looping reactions and its reaction kinetics', J. of Chem. Eng. Jpn., Vol. 27, 1994, pp. 296-301 https://doi.org/10.1252/jcej.27.296
  9. H. Jin and M. Ishida : 'Reactivity study on natural gas fueled chemical-looping combustion by a fixed-bed reactor', Ind. Eng. Chem. Res., Vol. 41, 2002, pp.4004-4007 https://doi.org/10.1021/ie020184l
  10. H. Jin, T. Okamoto, and M. Ishida : 'Development of a novel chemical-looping combustion: Synthesis of a solid looping material of NiO/$NiAl_2O_4', Ind. Eng. Chem Res., Vol. 38, 1999, pp. 126-132 https://doi.org/10.1021/ie9803265
  11. S. Chemlal, A. Larbot, M. Persin, J. Sarrazin, M. Sghyar, and M. Rafiq : 'Cobalt spinel $CoAl_2O_4$ via sol-gel process: elaboration and surface properties', Material Research Bulletin, Vol. 35, 2000, pp. 2515-2523 https://doi.org/10.1016/S0025-5408(00)00444-X
  12. D. M. A. Melo, J. D. Cunha, J. D. G. Fernandes, M. I. Bernardi, M. A. F. Melo, and A. E. Martineilli : 'Evaluation of $CoAl_2O_4$ as ceramic pigments', Material Research Bulletin, Vol. 38, 2003, pp. 1559-1564 https://doi.org/10.1016/S0025-5408(03)00136-3