Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and r...Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and reducing CO_(2)emissions in ironmaking process.The BC with different ratios of FW were carbonized in a fixed bed reactor,and the physicochemical structure of the coke derived from FW/BC co-carbonization was characterized by Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,solid-state^(13)C nuclear magnetic resonance,optical microscopy,and scanning electron microscopy.The results reveal that the suitable incorporation of FW in BC is 10 wt.%,and the index of coke quality exhibits a good correlation with the optical anisotropy index and the aromaticity of the as-obtained cokes.The partial substitution of BC with FW exhibits potential benefits for colloid formation,owing to the higher hydrogen in FW.However,as the substitution ratio of BC with FW increases,it inhibits coke agglomeration due to more tortuous stacked structures formation during volatile releasing process.Moreover,it was identified that the substitution of higher BC ratios with FW results in the partial replacement of aromatic carbons by oxygenlinked carbons and aliphatic carbons.This substitution leads to a reduction in the aromaticity of the as-obtained coke.展开更多
基金supported by the National Natural Science Foundation of China(Grant No.51706160)Natural Science Foundation of Wuhan(2024040701010057)+2 种基金Hubei Technological Innovation Special Fund(Grant Nos.2023AFA004,2023BCB106,and 2022BCA085)14th“Five-Year Plan’’Hubei Provincial Advantaged Characteristic Disciplines Project of Wuhan University of Science and Technology(2023C0108)Foundation of Hubei Key Laboratory of Industrial Fume&Dust Pollution Control(HBIK2020-02).
文摘Forestry waste(FW)is a significant renewable energy source in China.The substitution of coal blends(BC)with forestry waste to produce metallurgical coke was investigated aiming at expanding alternative resources and reducing CO_(2)emissions in ironmaking process.The BC with different ratios of FW were carbonized in a fixed bed reactor,and the physicochemical structure of the coke derived from FW/BC co-carbonization was characterized by Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy,solid-state^(13)C nuclear magnetic resonance,optical microscopy,and scanning electron microscopy.The results reveal that the suitable incorporation of FW in BC is 10 wt.%,and the index of coke quality exhibits a good correlation with the optical anisotropy index and the aromaticity of the as-obtained cokes.The partial substitution of BC with FW exhibits potential benefits for colloid formation,owing to the higher hydrogen in FW.However,as the substitution ratio of BC with FW increases,it inhibits coke agglomeration due to more tortuous stacked structures formation during volatile releasing process.Moreover,it was identified that the substitution of higher BC ratios with FW results in the partial replacement of aromatic carbons by oxygenlinked carbons and aliphatic carbons.This substitution leads to a reduction in the aromaticity of the as-obtained coke.
