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Long-term coal chemical looping gasification using a bimetallic oxygen carrier of natural hematite and copper ore
Liu, Siqi1,2,3,4; He, Fang1; Zhao, Kun2,3,4; Zhao, Haibo5; Huang, Zhen2,3,4; Wei, Guoqiang2,3,4; Yang, Wen1
2022-02-01
发表期刊FUEL
ISSN0016-2361
卷号309页码:11
通讯作者He, Fang(hefang@glut.edu.cn) ; Zhao, Kun(zhaokun@ms.giec.ac.cn)
摘要Coal chemical looping gasification (CCLG) is a promising gasification technology for coal utilization with high resource utilization rate, energy saving and environmental protection properties. Development of suitable oxygen carriers and optimization of operating conditions for CCLG are the key for the coal conversion and H2&CO production (H2, CO). In this study, Cu-Fe bi-ore oxygen carrier prepared by spray drying granulation method using hematite and copper ore as raw materials was tested for CCLG. The effects of the reaction temperature, oxygen carrier to coal (O/L) ratio and steam addition amounts were systematically evaluated by reaction tests combing with various analytical methods. Most importantly, over 100 redox chemical looping cycles were performed to demonstrate the excellent stability of Cu-Fe bi-ore oxygen carrier during the redox reactions. Results showed that the optimal gasification condition is 950 degrees C with oxygen carrier-to-coal mass ratio of 3:1 and steam rate of 0.08 ml/min. Syngas yield of 58 mmol/g, as well as 75.2% syngas selectivity and 85.3% carbon conversion were achieved. After 100 redox cycles, the synthesis gas yield can still reach 46 mmol/g despite a decline, and the carbon conversion kept above 72%, without obvious sintering in the long-term test. The characterization results showed that the synergistic effect between Cu and Fe metals contributed to its good oxygen release ability and reducibility. The Cu-Fe bi-ore oxygen carrier undergoes a gradual reduction Fe3+_*Fe8/3+_*Fe2+_*Fe and Cu2+_*Cu process during the gasification reaction, accompanying with the lattice oxygen migration from bulk to the particle surface. This work demonstrated the economical method for the industrial application of CCLG process using spray-drying-derived oxygen carriers.
关键词Chemical looping gasification Coal Syngas Cu-Fe oxygen carrier Spray drying
DOI10.1016/j.fuel.2021.122106
关键词[WOS]CO2 CAPTURE ; MIXED-OXIDE ; COMBUSTION ; PYROLYSIS ; HYDROGEN ; SYNGAS ; PERFORMANCE ; TECHNOLOGY ; BIOMASS
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] ; National Natural Science Foundation of China[22179027] ; 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:000706524700005
出版者ELSEVIER SCI LTD
引用统计
被引频次:17[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/344007/35057
专题中国科学院广州能源研究所
通讯作者He, Fang; Zhao, Kun
作者单位1.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541004, 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.Huazhong Univ Sci & Technol, Sch Energy & Power Engn, State Key Lab Coal Combust, Wuhan 430074, Peoples R China
第一作者单位中国科学院广州能源研究所
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GB/T 7714
Liu, Siqi,He, Fang,Zhao, Kun,et al. Long-term coal chemical looping gasification using a bimetallic oxygen carrier of natural hematite and copper ore[J]. FUEL,2022,309:11.
APA Liu, Siqi.,He, Fang.,Zhao, Kun.,Zhao, Haibo.,Huang, Zhen.,...&Yang, Wen.(2022).Long-term coal chemical looping gasification using a bimetallic oxygen carrier of natural hematite and copper ore.FUEL,309,11.
MLA Liu, Siqi,et al."Long-term coal chemical looping gasification using a bimetallic oxygen carrier of natural hematite and copper ore".FUEL 309(2022):11.
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