Thermodynamic analysis of methanol steam reforming to produce hydrogen for HT-PEMFC: An optimization study |
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| Affiliation: | 1. Department of Mechanical and Mechatronics Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada;2. Department of Mechanical Engineering, University of Akron, Akron, OH 44325-3903, United States;1. Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia (LEPABE), Faculdade de Engenharia do Porto, Rua Roberto Frias, 4200-465 Porto, Portugal;2. German Aerospace Center (DLR), Institute of Engineering Thermodynamics, 70569 Stuttgart, Germany;1. Department of Mechanical Engineering, Inha University, 100 Inha-ro, Nam-Gu, Incheon, 22212, Republic of Korea;2. R&D Center, Korea Gas Corporation, 1248 Suin-ro, Sangrok-gu, Ansan-si, Gyeonggi-do, 15328, Republic of Korea;3. Fuel Cell Research Center, Korea Institute of Energy Research, 152 Gajeong-ro, Yuseong-gu, Daejeon, 305-343, Republic of Korea;4. Doosan Corporation Fuel Cell, 75 Jeyakdanji-ro, Hyangnam-eup, Hwaseong-si, Gyeonggi-do, 18608, Republic of Korea;1. Mebius d.o.o., Na Jami 3, SI-1000 Ljubljana, Slovenia;2. University of Ljubljana, Faculty of Mechanical Engineering, A?ker?eva 6, SI-1000 Ljubljana, Slovenia;3. National Institute of Chemistry Slovenia, Hajdrihova 19, SI-1000 Ljubljana, Slovenia |
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| Abstract: | A statistical modeling and optimization study on the thermodynamic equilibrium of methanol steam reforming (MSR) process was performed by using Aspen Plus and the response surface methodology (RSM). The impacts of operation parameters; temperature, pressure and steam-to-methanol ratio (H2O/MeOH) on the product distribution were investigated. Equilibrium compositions of the H2-rich stream and the favorable conditions within the operating range of interest (temperature: 25–600 °C, pressure: 1–3.0 atm, H2O/MeOH: 0–7.0) were analyzed. Furthermore, ideal conditions were determined to maximize the methanol conversion, hydrogen production with high yield and to minimize the undesirable products such as CO, methane, and carbon. The optimum corresponding MSR thermodynamic process parameters which are temperature, pressure and H2O/MeOH ratio for the production of HT-PEMFC grade hydrogen were identified to be 246 °C, 1 atm and 5.6, respectively. |
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| Keywords: | Methanol Steam reforming Hydrogen production Thermodynamic analysis Response surface methodology |
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