A structured packed-bed reactor designed for exothermic hydrogenation of acetone |
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| Affiliation: | 1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;1. Department of Chemistry Education, Faculty of Tarbiyah, Institut Agama Islam Negeri (IAIN) Batusangkar, 27213 West Sumatera, Indonesia;2. Institute of Microengineering and Nanoelectronics, Universiti Kebangsaan Malaysia, 43600, Bangi, Selangor, Malaysia;1. Departemen Fisika, Fakultas MIPA, Universitas Indonesia, Depok, 16424, Indonesia;2. Jurusan Pendidikan Fisika, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Muhammadiyah Prof. Dr. Hamka, Jakarta, Timur, Indonesia;3. Institute of Microengineering and Nanoelectronics (IMEN), Universiti Kebangsaan Malaysia, 43600, UKM Bangi, Selangor, Malaysia;1. Department of Engineering, Lancaster University, Lancaster LA1 4YW, UK;2. School of Chemistry and Chemical Engineering, Queen University Belfast, Belfast BT7 1NN, Northern Ireland, UK;3. Centre of Excellence in Catalysis and Catalytic Reaction Engineering, Department of Chemical Engineering, Faculty of Engineering, Chulalongkorn University, Bangkok 10330, Thailand;4. Department of Chemistry – Ångström Laboratory, Uppsala University, Uppsala 751 05, Sweden;1. School of Chemistry and Chemical Engineering, Hubei Key Laboratory of Coal Conversion and New Carbon Materials, Wuhan University of Science and Technology, Wuhan, Hubei, 430081, China;2. State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou, 510640, China |
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| Abstract: | Fixed-bed reactors randomly packed with catalysts have many disadvantages that may adversely affect the desired chemical reaction. The increasingly used monolithic reactor, in contrast, has many operational advantages; however, for a kinetically-controlled reaction, it does not contain sufficient catalyst to sustain the reaction. To address the problems associated with both randomly packed-bed reactor and the monolithic reactor, a structured packed-bed reactor was proposed and mathematical models were built for randomly packed-bed reactor and structured packed-bed reactor. Their respective performances were compared when applied to the exothermic reaction of the isopropanol–acetone–hydrogen chemical heat pump system. The results showed that the structured packed-bed reactor performed better in terms of pressure drop and heat transfer capacity, and had a lower radial temperature gradient, indicating that this reactor had a higher effective heat conductivity. Isopropanol on the catalyst particle surfaces was more concentrated near the tube wall because a wall effect existed in the boundary layer around the particle-wall contact points. |
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| Keywords: | Chemical heat pump Structured packed-bed reactor Acetone hydrogenation CFD simulation |
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