Biomass thermochemical conversion: A review on tar elimination from biomass catalytic gasification |
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| Affiliation: | 1. Lehrstuhl für Heterogene Katalyse und Technische Chemie, Institut für Technische und Makromolekulare Chemie (ITMC), RWTH Aachen University, Aachen, 52074, Germany;2. Key Laboratory of Coal Processing and Efficient Utilization (Ministry of Education), China University of Mining & Technology, Xuzhou, 221116, Jiangsu, China;1. Department of Materials and Ceramic Engineering, CICECO – Aveiro Institute of Materials, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;2. Department of Environment and Planning, CESAM – Centre for Environmental and Marine Studies, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;3. KTH Royal Institute of Technology, Department of Chemical Engineering, SE-100 44 Stockholm, Sweden;1. Fuels and Energy Technology Institute, Curtin University, GPO Box U1987, Perth, WA 6845, Australia;2. Joint International Research Laboratory of Biomass Energy and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China;3. Department of Chemical Engineering, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia;1. School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo, 255000, Shandong, China;2. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, 100081, China;3. Institute for Chemicals and Fuels from Alternative Resources, Western University, London, Ontario, Canada;1. School of Mechanical and Aerospace Engineering, Queen’s University Belfast, BT9 5AH, United Kingdom;2. Department of Chemical and Process Engineering, University of Strathclyde, G1 1XJ, United Kingdom |
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| Abstract: | Biomass is promising renewable energy because of the possibility of value-added fuels production from biomass thermochemical conversion. Among the thermochemical conversion technology, gasification could produce the H2-rich syngas then into value-added chemicals via F-T (Fischer-Tropsch) synthesis. However, a variety of difficulties, such as tar formation, reactors impediment, complex tar cracked mechanism, etc. make it difficult to develop for further application. This paper sheds light on the developments of biomass thermochemical conversion, tar classifications, tar formation, and elimination methods. Secondly, we provide a comprehensive the state-of-the-art technologies for tar elimination, and we introduce some advanced high activity catalysts. Furthermore, many represent tar models were employed for explanation of the tar-cracked pathway, and real tar-cracked mechanism was proposed. Following this, some operational conditions and effective gasified models were concluded to give an instruction for biomass catalytic gasification. |
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| Keywords: | Biomass Thermochemical conversion Gasification Tar elimination Tar-cracked mechanism |
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