Thermogravimetric characteristics of corn straw and bituminous coal copyrolysis based the ilmenite oxygen carriers  

作　　者：Pengxing Yuan Xiude Hu Jingjing Ma Tuo Guo Qingjie Guo 

机构地区：[1]College of Chemical Engineering,Qingdao University of Science&Technology,Qingdao 266042,China [2]State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering,Ningxia University,Yinchuan 750021,China

出　　处：《Chinese Journal of Chemical Engineering》2024年第4期8-15,共8页中国化学工程学报（英文版）

基　　金：support by the Key Research and Development Program of Ningxia Province of China(2018BCE01002);funded by the Joint Funds of the National Natural Science Foundation of China(U20A20124);the Natural Science Foundation Project of Ningxia(2022AAC01001).

摘　　要：Herein,the co-pyrolysis reaction characteristics of corn straw(CS)and bituminous coal in the presence of ilmenite oxygen carriers(OCs)are investigated via thermogravimetry coupled with mass spectrometry.The results reveal that the participation of OCs weakens the devolatilization intensity of co-pyrolysis.When the CS blending ratio is<50%,the mixed fuel exhibits positive synergistic effects.The fitting results according to the Coats-Redfern integral method show that the solid-solid interaction between OCs and coke changes the reaction kinetics,enhancing the co-pyrolysis reactivity at the high-temperature zone(750-950C).The synergistic effect is most prominent at a 30%CS blending ratio,with copyrolysis activation energy in the range of 26.35-40.57 kJ·mol^(-1).

关 键 词：Oxygen carrier CO-PYROLYSIS BIOMASS COAL 

分 类 号：TK6[动力工程及工程热物理—生物能] TQ530.2[化学工程—煤化学工程]