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Evaluation of Pyrolysis Reactivity, Kinetics, and Gasification Reactivity of Corn Cobs after Torrefaction Pretreatment

文献类型：期刊论文

作者Xia, Shengpeng1,3,4,5; Zheng, Anqing1,2,4,5; Zhao, Kun1,2,4,5; Zhao, Zengli1,2,4,5; Li, Haibin1,2,4,5
刊名ENERGIES
出版日期2022-12-01
卷号15期号:24页码:10
关键词corn cobs torrefaction pyrolysis reactivity gasification reactivity pyrolysis kinetics
DOI10.3390/en15249277
通讯作者Zheng, Anqing(zhengaq@ms.giec.ac.cn) ; Zhao, Kun(zhaokun@ms.giec.ac.cn)
英文摘要To reveal the effect of torrefaction pretreatment on pyrolysis and gasification reactivity of biomass, corn cob was first subjected to torrefaction pretreatment in a fixed-bed reactor at various reaction temperatures. The pyrolysis reactivity, kinetics, and gasification reactivity of torrefied corn cob were systematically assessed by various methods, proving that torrefaction pretreatment has a substantial influence on the physicochemical properties of corn cobs. The O/C and H/C molar ratios of corn cobs considerably drop with the increasing torrefaction temperature, and their higher heat-ing value (HHV) and energy density rise as well. It is found that torrefaction improves the pyrolysis reactivity of corn cobs because hemicellulose degradation is more severe than cellulose degradation during torrefaction, resulting in an increase in the percentage of cellulose in torrefied corn cobs. However, the severe depolymerization, polycondensation, and carbonization reaction during torre-faction of corn cobs at 280-300 degrees C can lead to a significant decline in the pyrolysis reactivity of corn cobs. Torrefaction pretreatment increases the pyrolysis activation energy of corn cobs, in addition to decreasing the char gasification reactivity of corn cob. The average char gasification reactivity of corn cobs drops when torrefaction severity increases. The passivation of active sites on the char surface may cause condensation and carbonation reactions of corn cobs during torrefaction. These findings provide new sights into the reasonable design of efficient torrefaction methods for appli-cation prior to pyrolysis and gasification of biomass.
WOS关键词LIGNOCELLULOSIC BIOMASS ; HEMICELLULOSE ; TEMPERATURE ; BEHAVIOR ; WOOD
资助项目National Natural Science Foundation of China[51876208] ; National Natural Science Foundation of China[51776209] ; Key Research and Development Program of Guangzhou[202206010122] ; Youth Innovation Promotion Association (CAS)[2019341] ; Foundation of the State Key Laboratory of Coal Conversion[J21-22-101]
WOS研究方向Energy & Fuels
语种英语
WOS记录号WOS:000902662000001
出版者MDPI
资助机构National Natural Science Foundation of China ; Key Research and Development Program of Guangzhou ; Youth Innovation Promotion Association (CAS) ; Foundation of the State Key Laboratory of Coal Conversion
源URL[http://ir.giec.ac.cn/handle/344007/38183]  
专题中国科学院广州能源研究所
通讯作者Zheng, Anqing; Zhao, Kun
作者单位1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China
2.Univ Sci & Technol China, Sch Energy Sci & Engn, Guangzhou 510640, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China
5.Chinese Acad Sci, Key Lab Renewable Energy, Guangzhou 510640, Peoples R China
推荐引用方式
GB/T 7714		 Xia, Shengpeng,Zheng, Anqing,Zhao, Kun,et al. Evaluation of Pyrolysis Reactivity, Kinetics, and Gasification Reactivity of Corn Cobs after Torrefaction Pretreatment[J]. ENERGIES,2022,15(24):10.
APA Xia, Shengpeng,Zheng, Anqing,Zhao, Kun,Zhao, Zengli,&Li, Haibin.(2022).Evaluation of Pyrolysis Reactivity, Kinetics, and Gasification Reactivity of Corn Cobs after Torrefaction Pretreatment.ENERGIES,15(24),10.
MLA Xia, Shengpeng,et al."Evaluation of Pyrolysis Reactivity, Kinetics, and Gasification Reactivity of Corn Cobs after Torrefaction Pretreatment".ENERGIES 15.24(2022):10.

入库方式： OAI收割

来源：广州能源研究所

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