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The performance evaluation of an industrial membrane reformer with catalyst-deactivation for a domestic methanol production plant
Affiliation:1. Department of Chemical, Petroleum and Gas Engineering, Shiraz University of Technology, Shiraz, Iran;2. Institute on Membrane Technology of the Italian National Research Council (ITM-CNR), Via P. Bucci Cubo 17/C C/o, University of Calabria, Rende (CS) 87036, Italy;1. State Key Laboratory of Engines, Tianjin University, Tianjin, 300072, China;2. Division of Combustion Physics, Lund University, P.O. Box 118, SE-221 00, Lund, Sweden;1. Department of Chemistry, Faculty of Science, Atatürk University, 25240 Erzurum, Turkey;2. Department of Chemistry, College of Sciences, Koç University, 34450 Sar?yer, Istanbul, Turkey;3. Central Research Laboratory, Bayburt University, 69000 Bayburt, Turkey;1. College of Materials Science and Engineering, Guilin University of Technology, Guilin, 541004, China;2. College of Chemistry and Bioengineering, Guilin University of Technology, Guilin, 541004, China;3. Guangxi Colleges and Universities Key Laboratory of Regional Ecological Environment Analysis and Pollution Control of West Guangxi, College of Chemistry and Environment Engineering, Baise University, Baise, 533000, China;4. Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Guilin University of Technology, Ministry of Education, Guilin, 541004, China;5. Guangxi Beibu Gulf Engineering Research Center for Green Marine Materials, Guilin University of Technology, Ministry of Education, Guilin, 541004, China;1. Center of Excellence in Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand;2. Center of Excellence in Particle Technology, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok, 10330, Thailand;3. PTT Innovation Institute, PTT Company Limited, Ayutthaya 13170, Thailand;1. ENEA, DTE SEN-CROSS, Via Martiri di Monte Sole 4, 40129, Bologna, Italy;2. Tesi sas, Via Bolzano 28, 00198, Roma, Italy;3. ENEA, Dipartimento Fusione e Tecnologie per la Sicurezza Nucleare, Via E. Fermi 45, 00044, Frascati, Italy;4. Department of Chemical and Energy Technology, Rey Juan Carlos University, C/ Tulipán s/n, 28933, Móstoles, Spain;1. Universidad Rey Juan Carlos, C/Tulipán s/n 28933, Móstoles, Madrid, Spain;2. Alma Mater Studiorum-Università di Bologna, Via Terracini 28, 40131 Bologna, Italy
Abstract:Methane reforming is the most important and economical process for hydrogen and syngas generation. In this work, the dynamic simulation of methane steam reforming in an industrial membrane reformer for synthesis gas production is developed. A novel deactivation model for commercial Ni-based catalysts is proposed and the monthly collected data from an existing reformer in a domestic methanol plant is used to optimize the model parameters. The plant data is also employed to check the model accuracy. It was observed that the membrane reformer could compensate for the catalyst deactivating effect.In order to assure the long membrane lifetime and decrease the unit price, the membrane reformer with 5 μm thick Pd on stainless steel supports is modeled at the temperature below the maximum operating temperature of Pd based membranes (around 600 °C). The dynamic modeling showed that the methane conversion of 76% could be achieved at a moderate temperature of 600 °C for an industrial membrane reformer. The cost-effective generation of syngas with an appropriate H2/CO ratio of 2.6 could be obtained by membrane reformer. This is while the conventional reformer exhibits a maximum conversation of 64 at 1200 °C challenging due to its high syngas ratio (3.7). On the other hand, the pure hydrogen from membrane reformer can supply part of the ammonia reactor feed in an adjacent ammonia plant.
Keywords:Methane steam reforming  Dynamic model  Catalyst deactivation rate  Industrial membrane reformer  Methanol production plant
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