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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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A Study on Optimal Operation of Methanol Steam Reforming System for Hydrogen Fuel Cell Propulsion Ships

수소 연료전지 추진 선박 적용을 위한 메탄올 수증기 개질 시스템 최적 운전점 연구

  • HEEJOO, CHO (Daewoo Shipbuilding & Marine Engineering) ;
  • SOOBIN, HYEON (Department of Naval Architecture and Offshore Engineering, Dong-A University) ;
  • SEUNGKYO, JUNG (Daewoo Shipbuilding & Marine Engineering) ;
  • HYUNJIN, JI (Agency for Defense Development) ;
  • JUNGHO, CHOI (Department of Naval Architecture and Offshore Engineering, Dong-A University)
  • 조희주 (대우조선해양 서울대학교 시흥R&D센터) ;
  • 현수빈 (동아대학교 조선해양플랜트공학과) ;
  • 정승교 (대우조선해양 서울대학교 시흥R&D센터) ;
  • 지현진 (국방과학연구소) ;
  • 최정호 (동아대학교 조선해양플랜트공학과)
  • Received : 2022.07.24
  • Accepted : 2022.12.21
  • Published : 2022.12.30
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Abstract

Hydrogen fuel cell propulsion ships are emerging to respond to the recently strengthened carbon emission regulations in the international shipping sector. Methanol can be stored in a liquid state at normal pressure and temperature, and has the advantage of lower reforming temperature compared to other fuels. In this study, the optimal operating point of the methanol steam reforming system was derived by changing the Steam Carbon Ratio (SCR) from 0.10 to 3.00. Results showed that In terms of methanol conversion rate and hydrogen yield, the larger the SCR is the better, but in terms of system efficiency, it is most advantageous to operate at SCR 0.70 in Pressure Swing Adsorption (PSA) mode and SCR 0.80 in Pd membrane mode. Through this study, it was found that the optimal SCR in the reformer and the entire system including the reformer may be different, which indicates that the optimum operating point may be different depending on the change of the system configuration.

Keywords

Acknowledgement

본 연구는 국방과학연구소의 지원으로 수행된 연구 결과 중 일부임을 밝히며, 연구비 지원에 감사드립니다(Project Name: UC180032GD).

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