Synthesis gas production from chemical looping gasification of lignite by using hematite as oxygen carrier

doi:10.1016/j.enconman.2019.01.096

	Synthesis gas production from chemical looping gasification of lignite by using hematite as oxygen carrier
	Wei, Guoqiang 1,2,3,4,5; Wang, Haitao 1,2,3; Zhao, Weina 7; Huang, Zhen 1,2,3; Yi, Qun 4,5; He, Fang 6; Zhao, Kun 1,2,3; Zheng, Anqing 1,2,3; Meng, Junguang 1,2,3; Deng, Zhengbing 1,2,3
刊名	ENERGY CONVERSION AND MANAGEMENT
	2019-04-01
卷号	185 页码:774-782
关键词	Lignite Chemical looping gasification CLG Hematite Oxygen carrier Synthesis gas
ISSN号	0196-8904
DOI	10.1016/j.enconman.2019.01.096
通讯作者	Huang, Zhen(huangzhen@ms.giec.ac.cn)
英文摘要	Chemical looping gasification (CLG) of lignite by using hematite oxygen carrier is performed to achieve high purity synthesis gas. The oxygen carrier reaction performance as well as the effects of temperature and lignite/ oxygen carrier ratio on the syngas evaluation are investigated by TG and fixed bed reactor coupling with various analytical methods. The experimental results reveal that the hematite oxygen carrier consisting primarily of Fe2O3, SiO2 and Al2O3 presents three H-2 reduced peaks at 472.59 degrees C, 634.17 degrees C and 849.01 degrees C respectively, corresponding to the crystal form transition from Fe2O3 to Fe. Lignite pyrolyzes preferentially to generate intermediates then further reacts with oxygen carrier to produce synthesis gas in CLG process, following the oxygen carrier reaction path of Fe2O3 -> Fe0.963O -> Fe2O3. Oxygen carrier plays a key role in promoting lignite conversion to synthesis gas in CLG process owing to the lattice oxygen shifting reactions equilibrium to the direction of syngas production. Excessive lattice oxygen is beneficial to CLG reaction until the L/O ratio reaches to 4/6 with the limitation of heat and mass transfer in reaction system. However, the minimum value of O/L is 2/8, which ensures the oxygen carrier makes obvious promotion effect in reaction process. High temperature improves synthesis gas yield and carbon conversion by enhancing endothermic reactions in CLG process. The hematite oxygen carrier recovers main crystalline phase after the CLG process without serious sintering.
资助项目	National Natural Science Foundation of China[51776133] ; National Natural Science Foundation of China[U1810125] ; Natural Science Foundation of Guangdong Province[2018A0303130012] ; Science & Technology Research Project of Guangdong Province[2015A020215023] ; Science and Technology Projects of Guangzhou[201707010202] ; Training base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province ; Ministry of Science and Technology ; Taiyuan University of Technology[MKX201701]
WOS关键词	FLUIDIZED-BED ; COMBUSTION PERFORMANCE ; HYDROGEN-PRODUCTION ; COAL-GASIFICATION ; CALCIUM FERRITE ; SOLID FUELS ; IRON-ORE ; PYROLYSIS ; BIOMASS ; CHAR
WOS研究方向	Thermodynamics ; Energy & Fuels ; Mechanics
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000464086800059
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Guangdong Province ; Science & Technology Research Project of Guangdong Province ; Science and Technology Projects of Guangzhou ; Training base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province ; Ministry of Science and Technology ; Taiyuan University of Technology
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/24898]
专题	中国科学院广州能源研究所
通讯作者	Huang, Zhen
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.CAS Key Lab Renewable Energy, Guangzhou 510640, Guangdong, Peoples R China 3.Guangdong Prov Key Lab New & Renewable Energy Res, Guangzhou 510640, Guangdong, Peoples R China 4.Taiyuan Univ Technol, Training Base State Key Lab Coal Sci & Technol Sh, Taiyuan 030024, Shanxi, Peoples R China 5.Taiyuan Univ Technol, Minist Sci & Technol, Taiyuan 030024, Shanxi, Peoples R China 6.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, Peoples R China 7.Guangdong Mech & Elect Coll, Guangzhou 510515, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Wei, Guoqiang,Wang, Haitao,Zhao, Weina,et al. Synthesis gas production from chemical looping gasification of lignite by using hematite as oxygen carrier[J]. ENERGY CONVERSION AND MANAGEMENT,2019,185:774-782.
APA	Wei, Guoqiang.,Wang, Haitao.,Zhao, Weina.,Huang, Zhen.,Yi, Qun.,...&Li, Haibin.(2019).Synthesis gas production from chemical looping gasification of lignite by using hematite as oxygen carrier.ENERGY CONVERSION AND MANAGEMENT,185,774-782.
MLA	Wei, Guoqiang,et al."Synthesis gas production from chemical looping gasification of lignite by using hematite as oxygen carrier".ENERGY CONVERSION AND MANAGEMENT 185(2019):774-782.