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Characteristics of Biomass Devolatilization and in Situ Char Gasification Tested by the Non-Isothermal Method
Zeng, Xi1,2; Kahara, Kaito3; Ueki, Yasuaki1; Yoshiie, Ryo3; Xu, Guangwen2; Naruse, Ichiro1
2019-10-01
Source PublicationENERGY & FUELS
ISSN0887-0624
Volume33Issue:10Pages:9805-9817
AbstractThis work examined the reaction behavior and kinetics of in situ char gasification and the corresponding biomass devolatilization by TGA based on the non-isothermal method. Four kinds of devolatilization atmosphere (N-2, N-2+CO2 (10%), N-2+CO2 (50%), N-2+steam (10%)), three kinds of gasification atmosphere ( N-2+CO2 (10%), N-2+CO2 (50%), N-2+steam (10%)), and different heating rates (5, 10, 20, 30, 40 K/min) were adopted. With the increase of heating rate in each atmosphere for biomass devolatilization or char gasification, the typical reaction temperatures, including TBD-max, TCG-i, and TCG-max , increased obviously due to the delayed effect. At a given heating rate, the adopted devolatilization atmospheres displayed very weak influence on the volatiles release behavior and kinetics, even for the CO2 content of 50%, but had an obvious influence on the char property. The volume reaction model and shrinking core reaction model were suitable to describe the behaviors of biomass devolatilization and char gasification, respectively. Compared to biomass devolatilization, the reaction atmosphere had a remarkable effect on char gasification, especially in the curve shape of reaction rate and kinetic parameters. For the in situ char gasification, the calculated activation energy (E) in the steam atmosphere was much lower than that in the CO2 atmosphere. While for the char gasification in the steam atmosphere, the E of ex situ char was higher than that of in situ char, indicating the necessity of adopting the in situ char for the char gasification research.
DOI10.1021/acs.energyfuels.9b00672
Language英语
WOS KeywordPYROLYSIS CHARACTERISTICS ; STEAM GASIFICATION ; REACTION-KINETICS ; ALKALINE-EARTH ; CO-PYROLYSIS ; REACTIVITY ; COMBUSTION ; MODEL ; PERFORMANCE ; SAWDUST
Funding ProjectJSPS (Japan Society for the Promotion of Science) International Fellowships for Research in Japan
WOS Research AreaEnergy & Fuels ; Engineering
WOS SubjectEnergy & Fuels ; Engineering, Chemical
Funding OrganizationJSPS (Japan Society for the Promotion of Science) International Fellowships for Research in Japan
WOS IDWOS:000492113000036
PublisherAMER CHEMICAL SOC
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Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38929
Collection中国科学院过程工程研究所
Corresponding AuthorZeng, Xi
Affiliation1.Nagoya Univ, Inst Mat & Syst Sustainabil IMaSS, Nagoya, Aichi 4648601, Japan
2.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
3.Nagoya Univ, Dept Mech Syst Engn, Nagoya, Aichi 4648601, Japan
Recommended Citation
GB/T 7714
Zeng, Xi,Kahara, Kaito,Ueki, Yasuaki,et al. Characteristics of Biomass Devolatilization and in Situ Char Gasification Tested by the Non-Isothermal Method[J]. ENERGY & FUELS,2019,33(10):9805-9817.
APA Zeng, Xi,Kahara, Kaito,Ueki, Yasuaki,Yoshiie, Ryo,Xu, Guangwen,&Naruse, Ichiro.(2019).Characteristics of Biomass Devolatilization and in Situ Char Gasification Tested by the Non-Isothermal Method.ENERGY & FUELS,33(10),9805-9817.
MLA Zeng, Xi,et al."Characteristics of Biomass Devolatilization and in Situ Char Gasification Tested by the Non-Isothermal Method".ENERGY & FUELS 33.10(2019):9805-9817.
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