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

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Computational Analysis for Improving Internal Flow of High Pressure Methanol Steam Reformer Pressure Vessel

고압형 메탄올 수증기 개질기 압력용기의 내부 유동 개선을 위한 전산 해석

  • YU, DONGJIN (Department of Mechanical Engineering, Graduate School, Chungnam National University) ;
  • JI, HYUNJIN (Agency for Defense Development) ;
  • YU, SANGSEOK (School of Mechanical Engineering, Chungnam National University)
  • Received : 2020.08.28
  • Accepted : 2020.10.30
  • Published : 2020.10.30
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Abstract

A reformer is a device for producing hydrogen used in fuel cells. Among them, methanol steam reformer uses methanol as fuel, which is present as a liquid at room temperature. It has the advantage of low operating temperature, high energy density, and high hydrogen production. The purpose of this study is to improve the internal flow of the pressure vessel when a bundle of methanol steam reformer in the pressure vessel goes out to a single outlet. An analysis of equilibrium reaction to methanol steam reforming reaction was conducted using Aspen HYSYS® (Aspen Technology Inc., Bedford, USA), and based on the results, computational analysis was conducted using ANSYS Fluent® (ANSYS, Inc., Canonsburg, USA). For comparison of the results, the height of the pressure vessel, outlet diameter, and fillet was set as variables, and the optimum geometry was selected by comparing the effects of gravity and the amount of negative pressure.

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