CAS OpenIR
Co-gasification of digestate and lignite in a downdraft fixed bed gasifier: Effect of temperature
Chang, Shengqiang1,2; Zhang, Zhikai1; Cao, Lixia1; Ma, Liqiang2; You, Siming3; Li, Wangliang1
2020-06-01
Source PublicationENERGY CONVERSION AND MANAGEMENT
ISSN0196-8904
Volume213Pages:10
AbstractTo improve energy efficiency and biomass utilization in the process of anaerobic digestion, co-gasification is considered as an effective method to post-treat anaerobic digestion residues. In this work, the effect of temperature (650 degrees C, 750 degrees C, 850 degrees C and 950 degrees C) on the co-gasification of digestate and lignite was thoroughly investigated in a downdraft fixed bed gasifier. The results showed that the increase of gasification temperature increased the gas yield and the lower heating value (LHV) of product gas. Physicochemical properties of biochar were characterized by physical adsorption analyzer, Fourier transform infrared spectroscopy (FT-IR), Raman spectroscopy and thermogravimetric analyzer (TG). It was shown that the average pore diameter increased in the range of 650 degrees C to 950 degrees C, while specific surface area and pore volume first increased from 650 degrees C to 850 degrees C and then decreased at 950 degrees C. The Raman analysis of biochar indicated that small aromatic rings condensed to large aromatic ring and increased the content of C-aromatic-C-alkyl and the crosslinking density at higher temperature. The variation of biochar properties at the higher temperature caused a decrease in the gasification reactivity. With the increase of temperature, the content of carbolic oil in the tar increased, but the contents of light oil, naphthalene oil and washing oil decreased. This study comprehensively analyzed the products properties and demonstrated the feasibility of co-gasification of digestate and lignite.
KeywordCo-gasification Lignite Digestate Downdraft fixed bed gasifier Biochar
DOI10.1016/j.enconman.2020.112798
Language英语
WOS KeywordCHAR STRUCTURE ; SEWAGE-SLUDGE ; ANAEROBIC-DIGESTION ; PYROLYSIS INFLUENCE ; BIOMASS ; BEHAVIOR ; WASTE ; STEAM ; COMBUSTION ; ADSORPTION
Funding ProjectNational Natural Science Foundation of China[21878313] ; Guizhou Key Technology Support Program[[2019]2839]
WOS Research AreaThermodynamics ; Energy & Fuels ; Mechanics
WOS SubjectThermodynamics ; Energy & Fuels ; Mechanics
Funding OrganizationNational Natural Science Foundation of China ; Guizhou Key Technology Support Program
WOS IDWOS:000534066300018
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/40860
Collection中国科学院过程工程研究所
Corresponding AuthorYou, Siming; Li, Wangliang
Affiliation1.Chinese Acad Sci, Inst Proc Engn, Key Lab Green Proc & Engn, 1 Zhongguancun, Beijing 100190, Peoples R China
2.China Univ Min & Technol Beijing, Sch Chem & Environm Engn, Beijing 100083, Peoples R China
3.Univ Glasgow, James Watt Sch Engn, Div Syst Power & Energy, Glasgow G12 8QQ, Lanark, Scotland
Recommended Citation
GB/T 7714
Chang, Shengqiang,Zhang, Zhikai,Cao, Lixia,et al. Co-gasification of digestate and lignite in a downdraft fixed bed gasifier: Effect of temperature[J]. ENERGY CONVERSION AND MANAGEMENT,2020,213:10.
APA Chang, Shengqiang,Zhang, Zhikai,Cao, Lixia,Ma, Liqiang,You, Siming,&Li, Wangliang.(2020).Co-gasification of digestate and lignite in a downdraft fixed bed gasifier: Effect of temperature.ENERGY CONVERSION AND MANAGEMENT,213,10.
MLA Chang, Shengqiang,et al."Co-gasification of digestate and lignite in a downdraft fixed bed gasifier: Effect of temperature".ENERGY CONVERSION AND MANAGEMENT 213(2020):10.
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