文献类型：期刊文献

英文题名：Structural and gasification kinetic studies on co-pyrolysis chars of coal and biomass

作者：Liu, Lang Zeng, Jingsong Jiao, Qingrui Ren, Shan Yang, Jian

第一作者：刘浪

通信作者：Liu, L[1];Ren, S[2]

机构：[1]Guizhou Inst Technol, Chem Engn Inst, Guiyang 550003, Guizhou, Peoples R China;[2]Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

第一机构：贵州理工学院

通信机构：corresponding author), Guizhou Inst Technol, Chem Engn Inst, Guiyang 550003, Guizhou, Peoples R China;corresponding author), Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China.|贵州理工学院;

年份：2022

卷号：1

期号：4

起止页码：225-237

外文期刊名：ENERGY ADVANCES

收录：Scopus(收录号：2-s2.0-85151014740);WOS:【ESCI(收录号:WOS:001113244100001)】；

基金：We gratefully acknowledge the National Natural Science Foundation of China (52164033), the Science and Technology Project of Guizhou Province (Qian Ke He Ping Tai Ren Cai[2019]5609), and the Natural Science Foundation of Guizhou provincial Department of Education (Qianjiaohe KY Zi[2017] 009) for financial support.

语种：英文

摘要：The CO2 gasification behaviors of co-pyrolysis chars of coal and biomass were investigated using isothermal thermogravimetry at 950-1150 degrees C. The TGA results showed that char gasification reactivity with higher biomass composition was better than that with lower biomass composition. The results from BET and XRD indicated that biomass can promote the growth of porous structure and inhibit graphite-like carbon formation during the co-pyrolysis of coal and biomass. An extended random pore model was proposed to define the gasification kinetics of the co-pyrolysis chars. The activation energies (Ea) of chars were observed to be reduced with increasing biomass composition. Meanwhile the synergetic influence of interactions between char/mineral and mineral/mineral on the whole co-gasification process was predicted. The relationship between the gasification reactivity and char characteristics was also analyzed. G(X): a function describing the effect of ash and carbon matrix evolution on gasification reaction rate.