Hydrogen-rich syngas production from chemical looping gasification of lignite by using NiFe2O4 and CuFe2O4 as oxygen carriers

doi:10.1016/j.fuel.2021.121269

GIEC OpenIR

	Hydrogen-rich syngas production from chemical looping gasification of lignite by using NiFe2O4 and CuFe2O4 as oxygen carriers
	Zhao, Kun1,2,3 ; Fang, Xiaojie 4; Huang, Zhen 1,2,3; Wei, Guoqiang 1,2,3; Zheng, Anqing1,2,3 ; Zhao, Zengli1,2,3
	2021-11-01
发表期刊	FUEL
ISSN	0016-2361
卷号	303 页码:10
通讯作者	Zheng, Anqing(zhengaq@ms.giec.ac.cn)
摘要	Chemical looping gasification provides a novel technology to enable clean conversion of coal with inherent CO2 capture. In this study, four types of NiFe2O4 and CuFe2O4 synthesized by sol-gel method and solid-phase method were used as oxygen carriers to promote the H-2 production from gasification of lignite. The effects of the types of oxygen carrier and oxygen carrier to coal (O/C) ratio on chemical looping gasification of lignite were first investigated by a thermogravimetric analyzer (TGA) combing with various analytical methods. The results show that, among four types of oxygen carrier, the NiFe2O4 synthesized by sol-gel method exhibits the highest gasification reactivity with lignite char at an O/C ratio of 1, since its highly cubic spinet structure is beneficial to improve the mobility of lattice oxygen. Furthermore, the operating conditions for chemical looping gasification of lignite were optimized and the gasification performance of four types oxygen carriers was compared by using a fixed bed reactor. It is found that NiFe2O4 synthesized by sol-gel method exhibits the highest total gas yield of 24.47 mol/kg and H-2/CO ratio of 0.77 during chemical looping gasification of lignite under the optimal operating conditions, ascribed to Fe-Ni synergistic effect which provided higher gasification reactivity with lignite char. The addition of steam drastically improves the total gas yield and H-2/CO ratio of syngas from 24.47 mol/kg and 0.77 to 64.98 mol/kg and 2.79, suggesting that the H-2/CO ratio of syngas can be flexibly adjusted to meet the need of downstream process via controlling the amount of steam added. These findings provide an efficient method to obtain H-2-rich syngas via chemical looping gasification of lignite.
关键词	Coal gasification Chemical looping gasification H-2-rich syngas Copper ferrite Nickel ferrite
DOI	10.1016/j.fuel.2021.121269
关键词[WOS]	SYNTHESIS GAS-PRODUCTION ; SOLID-SOLID REACTION ; BIOMASS GASIFICATION ; COMBUSTION ; CHAR ; COAL ; NANOPARTICLES ; SELECTION ; OXIDES
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2018YFB0605402] ; National Natural Science Foundation of China[51876205] ; Youth Innovation Promotion Association, CAS[2019341] ; Youth Innovation Promotion Association, CAS[2018383] ; Pearl River S&T Nova Program of Guangzhou[201906010092] ; Pearl River S&T Nova Program of Guangzhou[201806010061]
WOS研究方向	Energy & Fuels ; Engineering
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association, CAS ; Pearl River S&T Nova Program of Guangzhou
WOS类目	Energy & Fuels ; Engineering, Chemical
WOS记录号	WOS:000694742400005
出版者	ELSEVIER SCI LTD
引用统计	被引频次：38[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/344007/33867
专题	中国科学院广州能源研究所
通讯作者	Zheng, Anqing
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Peoples R China 4.Nanjing Univ Sci & Technol, Sch Chem Engn, Nanjing 210094, 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	Zhao, Kun,Fang, Xiaojie,Huang, Zhen,et al. Hydrogen-rich syngas production from chemical looping gasification of lignite by using NiFe2O4 and CuFe2O4 as oxygen carriers[J]. FUEL,2021,303:10.
APA	Zhao, Kun,Fang, Xiaojie,Huang, Zhen,Wei, Guoqiang,Zheng, Anqing,&Zhao, Zengli.(2021).Hydrogen-rich syngas production from chemical looping gasification of lignite by using NiFe2O4 and CuFe2O4 as oxygen carriers.FUEL,303,10.
MLA	Zhao, Kun,et al."Hydrogen-rich syngas production from chemical looping gasification of lignite by using NiFe2O4 and CuFe2O4 as oxygen carriers".FUEL 303(2021):10.