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J. KIMS Technol > Volume 20(4); 2017 > Article
Journal of the Korea Institute of Military Science and Technology 2017;20(4):528-535.
DOI: https://doi.org/10.9766/KIMST.2017.20.4.528   
Study on Pressurized Diesel Reforming System for Polymer Electrolyte Membrane Fuel Cell in Underwater Environment
Kwangho Lee, Gwangwoo Han, Joongmyeon Bae
Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology
수중 환경에서 고분자 전해질 연료전지(PEMFC) 공급용 수소 생산을 위한 가압 디젤 개질시스템에 관한 연구
이광호, 한광우, 배중면
한국과학기술원 기계공학과
Abstract
Fuel cells have been spotlighted in the world for being highly efficient and environmentally friendly. A hydrogen which is the fuel of fuel cell can be obtained from a number of sources. Hydrogen source for operating the polymer electrolyte membrane fuel cell(PEMFC) in the current underwater environment, such as a submarine and unmanned underwater vehicles are currently from the metal hydride cylinder. However, metal hydride has many limitations for using hydrogen carrier, such as large volume, long charging time, limited storage capacity. To solve these problems, we suggest diesel reformer for hydrogen supply source. Diesel fuel has many advantages, such as high hydrogen storage density, easy to transport and also well-infra structure. However, conventional diesel reforming system for PEMFC requires a large volume and complex CO removal system for lowering the CO level to less than 10 ppm. In addition, because the preferential oxidation(PROX) reaction is the strong exothermic reaction, cooling load is required. By changing this PROX reactor to hydrogen separation membrane, the problem from PROX reactor can be solved. This is because hydrogen separation membranes are small and permeable to pure hydrogen. In this study, we conducted the pressurized diesel reforming and water-gas shift reaction experiment for the hydrogen separation membrane application. Then, the hydrogen permeation experiments were performed using a Pd alloy membrane for the reformate gas.
Key Words: Diesel Reforming, Hydrogen, Polymer Electrolyte Membrane Fuel Cell, Water-Gas Shift Reaction, Pd Alloy Membrane
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