A review on reactivity characteristics and synergy behavior of biomass and coal Co-gasification |
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Authors: | Juntao Wei Miao Wang Fuchen Wang Xudong Song Guangsuo Yu Yurong Liu Hari Vuthaluru Jie Xu Yin Xu Hong Zhang Shu Zhang |
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Affiliation: | 1. Joint International Research Laboratory of Biomass Energy and Materials, Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, PR China;2. Institute of Clean Coal Technology, East China University of Science and Technology, Shanghai 200237, PR China;3. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, PR China;4. Fuels and Energy Technology Institute, WASM-Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6845, Australia;5. Laboratory of Reaction and Separation Technology, Qingdao Agricultural University, Qingdao 266109, PR China;6. School of Electrical, Energy and Power Engineering, Yangzhou University, Yangzhou 225127, Jiangsu, PR China |
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Abstract: | Co-gasification is a promising approach to the clean and high-efficiency co-utilization of biomass and coal with syngas (H2+CO) production. Gasification reactivity is an important factor influencing the operation conditions choice, carbon conversion efficiency and syngas production performance. Coal-biomass interaction during co-gasification will directly result in the synergy behavior of different forms and intensities on co-gasification reactivity. Due to the fuel origin diversity, structural property difference and reaction process complexity of biomass and coal, a clear understanding of reactivity characteristics and synergy behavior of co-gasification is very essential for revealing co-gasification reaction mechanism and providing theoretical support for actual application. In this paper, the influences factors (such as feedstock type, blended ratio, gasification temperature, co-pyrolysis process, gasification reactor and biomass pretreatment) for co-gasification reactivity and the synergy behavior on co-gasification reactivity are summarized in details, and non-catalytic/catalytic synergy mechanisms for co-gasification are discussed. Previous researchers have acquired a plenty of meaning data, providing important reference for industrial application of co-gasification technology. However, volatile matter-char interaction mechanism during co-pyrolysis was still unclear, AAEM migration and transformation route during co-gasification are lack of in-situ analysis, transfer route and interaction of free radicals during co-gasification process were unknown, and co-gasification kinetics model containing dynamic synergistic/inhibition factors hasn't been established. |
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Keywords: | Biomass Coal Co-gasification Reactivity characteristics Synergy behavior |
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