Biomass chemical-looping gasification coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier

doi:10.1016/j.enconman.2019.112157

	Biomass chemical-looping gasification coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier
	He, Fang 1,2; Huang, Zhen 2; Wei, Guoqiang 2; Zhao, Kun 2; Wang, Guixia 1; Kong, Xiangfei 1; Feng, Yanyan 1; Tan, Haijun 1; Hou, Shili 1; Lv, Yijv 1
刊名	ENERGY CONVERSION AND MANAGEMENT
	2019-12-01
卷号	201 页码:13
关键词	Biomass Chemical-looping gasification Water-/CO2-splitting NiFe2O4 oxygen carrier
ISSN号	0196-8904
DOI	10.1016/j.enconman.2019.112157
通讯作者	Huang, Zhen(huangzhen@ms.giec.ac.cn)
英文摘要	Bio-syngas generation with flexible H-2 to CO ratios via biomass chemical-looping gasification (CLG) coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier (OC) was proposed in the present work. The presence of NiFe2O4 OC promotes biomass conversion, especially bio-char conversion at elevated temperature stage. Addition steam and/or CO2 into the carrying gas increased the weight loss rates of biomass. Up to 5.88 wt%/min and 4.97 wt%/min of the maximum weight loss rates were achieved during biomass conversion with NiFe2O4 OC in CO2 and steam flows in a TGA reactor, respectively. With NiFe2O4 as an oxygen carrier, an optimal lattice oxygen/biomass mass ratio is 0.51 giving the highest syngas yield of 0.77 m(3)/kg(b)(iomass) ass in the absence of steam or CO2 at 850 degrees C. Steam/biomass mass ratio of 2.25 gave the maximum carbon conversion of 92.53% and syngas yield of 1.38 m(3)/kg(b)(iomass) suggesting that steam addition significantly improves the biomass conversion and the syngas yield. Introducing a fraction of CO2 into steam could reduce the steam consumption as well as enhance the carbon conversion in biomass gasification step. NiFe2O4 OC serves as an effective catalyst for tars cracking in biomass-CLG. The tars content in the syngas generated in biomass-CLG with NiFe2O4 is 2.83 g/m(3), which is much lower than that (14.25 g/m(3)) in biomass gasification with inert ZrO2. The productivities of Hy and CO are 211 ml/g(OC )and 101 ml/g(OC) in water- and CO2-splitting steps. The proposed approach can potentially be applied for providing bio-syngas with flexible H-2 to CO ratios from 1:1 to 2.2:1 for purpose of various synthesis processes such as Fischer-Tropsch, acetic acid, and oxo-synthesis.
资助项目	National Natural Science Foundation of China[51776210] ; National Natural Science Foundation of China[51876205] ; National Key Research and Development Program of China[2018YFB0605405] ; DNL Cooperation Fund, CAS[DNL180205] ; Guangxi Natural Science Foundation[2018JJD120017] ; R&D Project of Guilin University of Technology[GLUTQD2018027] ; Youth Innovation Promotion Association, CAS[2018384]
WOS关键词	SYNTHESIS GAS-PRODUCTION ; TAR MODEL-COMPOUND ; NATURAL HEMATITE ; BARIUM FERRITE ; RAW GAS ; CO2 ; NICKEL ; CATALYSTS ; H2O ; ORE
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:000501649100021
资助机构	National Natural Science Foundation of China ; National Key Research and Development Program of China ; DNL Cooperation Fund, CAS ; Guangxi Natural Science Foundation ; R&D Project of Guilin University of Technology ; Youth Innovation Promotion Association, CAS
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/26108]
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.Guilin Univ Technol, Coll Chem & Bioengn, Guilin 541006, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	He, Fang,Huang, Zhen,Wei, Guoqiang,et al. Biomass chemical-looping gasification coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier[J]. ENERGY CONVERSION AND MANAGEMENT,2019,201:13.
APA	He, Fang.,Huang, Zhen.,Wei, Guoqiang.,Zhao, Kun.,Wang, Guixia.,...&Guo, Yanjun.(2019).Biomass chemical-looping gasification coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier.ENERGY CONVERSION AND MANAGEMENT,201,13.
MLA	He, Fang,et al."Biomass chemical-looping gasification coupled with water/CO2-splitting using NiFe2O4 as an oxygen carrier".ENERGY CONVERSION AND MANAGEMENT 201(2019):13.