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Cross-interaction of volatiles from co-pyrolysis of lignin with pig manure and their effects on properties of the resulting biochar

引用

Biochar 2021年第3期3卷 391-405页

作者： Chao Li Yifan Sun Lijun Zhang Changxu Wang Shu Zhang Qiaoling Li Leilei Xu Xun Hu School of Material Science and Engineering University of JinanJinan 250022People’s Republic of China Joint International Research Laboratory of Biomass Energy and Materials Co-Innovation Center of Efficient Processing and Utilization of Forest ResourcesCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Technology Center China Tobacco Fujian Industrial CompanyXiamen 361021FujianPeople’s Republic of China School of Environmental Science and Technology Nanjing University of Information Science and TechnologyNanjing 210000People’s Republic of China

Biomass and pig manure have distinct compositions and the co-pyrolysis of them has gained much ***,the influence of volatiles interaction on the properties of the char was still *** this study,lignin was selected as the model component of biomass with pig manure for co-pyrolysis at 600°*** results indicate that volatiles from co-pyrolysis promoted re-condensation reaction,resulting in the higher char yield(48.0%in co-pyrolysis versus 31.0%in pyrolysis of single manure)and the formation of more aromatics in *** co-pyrolysis also facilitated the dehydrogenation and dehydration reactions,which accounted for the elimination of oxygen and nitrogen contents and thus a higher carbon content(64.7%in the co-pyrolysis versus the averaged value of 46.4%from the pyrolysis of single feedstock),higher crystallinity and thermal stability of the *** in-situ diffuse reflection infrared Fourier transform spectroscopy(DRIFTS)characterization results demonstrated that the functionalities abundances of char with temperature was influenced by volatiles interaction via accelerating the carbonization *** addition,the high heating value(HHV)of char was obviously improved by cross-interaction of volatiles during co-pyrolysis(24.4 MJ/Kg in co-pyrolysis versus averaged value of 15.1 MJ/Kg from single pyrolysis),implying that the co-pyrolysis enhanced the energy density of the resulting char.

关键词： Co-pyrolysis lignin and pig manure Volatiles interaction Char properties Reaction network

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