Ca-enhanced hematite oxygen carriers for chemical looping reforming of biomass pyrolyzed gas coupled with CO2 splitting

doi:10.1016/j.fuel.2020.119125

GIEC OpenIR

	Ca-enhanced hematite oxygen carriers for chemical looping reforming of biomass pyrolyzed gas coupled with CO2 splitting
	Wei, Guo-qiang 1,2,3,4; Feng, Jie 1; Hou, Ya-Lei 5; Li, Fang-Zhou 1; Li, Wen-Ying 1; Huang, Zhen 2; Zheng, An-qing2 ; Li, Hai-bin2
	2021-02-01
发表期刊	FUEL
ISSN	0016-2361
卷号	285 页码:10
通讯作者	Feng, Jie(fengjie@tyut.edu.cn) ; Li, Wen-Ying(ying@tyut.edu.cn)
摘要	Chemical looping reforming (CLR) of biomass pyrolyzed gases coupled with CO2 splitting was proposed to improve the H-2/CO ratio of gaseous product by using Ca-enhanced hematite oxygen carriers. The oxygen carriers mainly consist of Fe2O3, Ca2Fe2O5, CaO and SiO2. The impurity gas in biomass pyrolyzed gases is consumed in CLR stage, attributing to the dry reforming reaction over a catalytic effect of oxygen carriers. The highest CH4 conversion 98.26% and CO2 conversion 71.92% are realized in the CLR process with the crystal transformation of Fe2O3 and Ca2Fe2O5 to Fe and CaO. The improved reactivity of hematite oxygen carriers by CaO is mainly ascribed to the intermetallic synergistic effect in Ca2Fe2O5, which influences the lattice oxygen release and selectivity of gaseous products. The maximum H-2/CO ratio of gaseous product in CLR process is nearly 3 times as high as the initial H-2/CO ratio of biomass pyrolyzed gas. Moreover, up to 80.95% CO2 conversion efficiency and 2.32 mmol/min/g CO yield are achieved in CO2 splitting step with the generation of Fe3O4 and CaFe3O5 in oxygen carriers. The CO2 conversion shows positive correlation with reaction temperature but negative correlation with weight hourly space velocity. The metallic synergistic effect between Ca/Fe are conductive to improve CO2 conversion though shifting the reaction equilibrium and enhancing ion diffusion. Modest reactivity and stability of Ca-modified oxygen carriers are confirmed in 15 cycles reaction, which indicates that potentially application prospect in CLR of biomass pyrolyzed gases coupled with CO2 splitting process.
关键词	Biomass pyrolyzed gases Chemical looping reforming Ca-modified hematite oxygen carriers Ca2Fe2O5 CO2 splitting
DOI	10.1016/j.fuel.2020.119125
关键词[WOS]	HYDROGEN-PRODUCTION ; GASIFICATION ; COAL ; CONVERSION ; PERFORMANCE ; FERRITE ; LIGNITE ; CHAR
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51976226] ; National Natural Science Foundation of China[51776133] ; Cooperation fund of Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences[DNL180205] ; Natural Science Foundation of Guangdong Province[2018A0303130012] ; Science & Technology Research Project of Guangdong Province[2015A020215023] ; Science & Technology Project of Guangzhou[201707010202]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	National Natural Science Foundation of China ; Cooperation fund of Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences ; Natural Science Foundation of Guangdong Province ; Science & Technology Research Project of Guangdong Province ; Science & Technology Project of Guangzhou
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000588132400080
出版者	ELSEVIER SCI LTD
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/32410
专题	中国科学院广州能源研究所
通讯作者	Feng, Jie; Li, Wen-Ying
作者单位	1.Taiyuan Univ Technol, Training Base State Key Lab Coal Sci & Technol Jo, Taiyuan 030024, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 3.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 4.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 5.Guangdong Commun Polytech, Guangzhou 510800, Peoples R China
第一作者单位	中国科学院广州能源研究所
推荐引用方式 GB/T 7714	Wei, Guo-qiang,Feng, Jie,Hou, Ya-Lei,et al. Ca-enhanced hematite oxygen carriers for chemical looping reforming of biomass pyrolyzed gas coupled with CO2 splitting[J]. FUEL,2021,285:10.
APA	Wei, Guo-qiang.,Feng, Jie.,Hou, Ya-Lei.,Li, Fang-Zhou.,Li, Wen-Ying.,...&Li, Hai-bin.(2021).Ca-enhanced hematite oxygen carriers for chemical looping reforming of biomass pyrolyzed gas coupled with CO2 splitting.FUEL,285,10.
MLA	Wei, Guo-qiang,et al."Ca-enhanced hematite oxygen carriers for chemical looping reforming of biomass pyrolyzed gas coupled with CO2 splitting".FUEL 285(2021):10.