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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
권호 표지
DOI QR코드

DOI QR Code

Research of High Efficiency Integrated Reforming System Using Separated Reforming System

분리형 개질기를 이용한 고효율 일체형 개질기 개발에 관한 연구

  • 박상현 (동국대학교 기계공학과) ;
  • 김철민 (동국대학교 기계공학과) ;
  • 손성효 (한국가스공사 가스기술연구원 신에너지기술센터) ;
  • 장세진 (한국가스공사 가스기술연구원 신에너지기술센터) ;
  • 김재동 (한국가스공사 가스기술연구원 신에너지기술센터) ;
  • 방완근 (씨에이치피테크) ;
  • 이상용 (동국대학교 기계공학과)
  • Received : 2017.12.19
  • Accepted : 2018.02.28
  • Published : 2018.02.28
Download PDF
⟨ Previous Next ⟩

Abstract

A high efficiency integrated reforming system for improving the efficiency of the 5 kW PEMFC system used as the back up power of building was studied. The separated reforming system consisted of three parts - A steam reformer with two stage concentric circular shape, a heat exchanger type steam generator and a CO shift reactor. Temperature and steam carbon ratio (SCR) were control variables during operation. The operating conditions were optimized based on the thermal efficiency of the steam reformer as reformate gas composition changes at different temperature. In experiments, water was fully vaporized in the steam generator up to SCR 3.5 and the maximum thermal efficiency was achieved at the operating temperature around $700^{\circ}C$ in the steam reforming reactor. With the results of the separated reforming system research, we improved the shape of high efficiency integrated reformer. The performance evaluation of the integrated reformer was based on optimized operating conditions in SCR 3.5. As a result, the developed integrated reforming system maintained an efficiency of 76% and constant performance over 3,000 hours.

Keywords

References

  1. O. Pasdag, A. Kvasnicka, M. Steffen, and A. Heinzel, "Highly integrated steam reforming fuel processor with condensing burner technology for maximised electrical efficiency of CHP-PEMFC systems", Energy Procedia, Vol. 28, 2012, pp. 57-65. https://doi.org/10.1016/j.egypro.2012.08.040
  2. Y. T. Seo, D. J. Seo, J. H. Jeong, and W. L. Yoon, "Design of an integrated fuel processor for residential PEMFCs applications", Journal of Power Sources, Vol. 160, 2006, pp. 505-509. https://doi.org/10.1016/j.jpowsour.2005.12.098
  3. H. G. Dusterwald, B. Hohlein, H. Kraut, J. Meusinger , R. Peters, and U. Stimming "Methanol Steam -Reforming in a Catalytic Fixed Bed Reactor", Chem. Eng. Technol, Vol. 20, 1997, pp.617-623. https://doi.org/10.1002/ceat.270200908
  4. L. Ma, C. Jiang, A. A. Adesina, D. L. Trimm, and M. S. Wainwright, "Simulation studies of autothermal reactor system for H2 production from methanol steam reforming", The Chemical Engineering Journal, Vol. 62, 1996, pp. 103-111.
  5. K. S. Patel and A. K. Sunol, "Dynamic behaviour of methane heat exchange reformer for residential fuel cell power generation system", Journal of Power Sources, Vol. 161, 2006, pp. 503-512. https://doi.org/10.1016/j.jpowsour.2006.03.061
  6. S. T. Lin, Y. H. Chen, C. C. Yu, Y. C. Liu, and C. H. Lee, "Modelling an experimental methane fuel processor", Journal of Power Sources, Vol. 148, 2005, pp. 43-53. https://doi.org/10.1016/j.jpowsour.2005.01.035
  7. M. Echigo, N. Shinke, S. Takami, and T. Tabata, "Performance of a natural gas fuel processor for residential PEFC system using a novel CO preferential oxidation catalyst", Journal of Power Sources, Vol. 132, 2004, pp. 29-35. https://doi.org/10.1016/j.jpowsour.2004.01.031
  8. Y. S. Seo, D. J. Seo, Y. T. Seo, and W. L. Yoon, "Investigation of the characteristics of a compact steam reformer integrated with a water-gas shift reactor", Journal of Power Sources, Vol. 161, 2006, pp. 1208-1216. https://doi.org/10.1016/j.jpowsour.2006.05.039
  9. J. T. Richardson, "Principles of Catalyst Development", Plenum Press, America, 1989, pp. 185-221.