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Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier
Lv, Pengmei; Yuan, Zhenhong; Ma, Longlong; Wu, Chuangzhi; Chen, Yong; Zhu, Jingxu
2007-10-01
Source PublicationRENEWABLE ENERGY
ISSN0960-1481
Volume32Issue:13Pages:2173-2185
Corresponding Authorlvpm@ms.giec.ac.cn
AbstractBiomass gasification is an important method to obtain renewable hydrogen, However, this technology still stagnates in a laboratory scale because of its high-energy consumption. In order to get maximum hydrogen yield and decrease energy consumption, this study applies a self-heated downdraft gasifier as the reactor and uses char as the catalyst to study the characteristics of hydrogen production from biomass gasification. Air and oxygen/steam are utilized as the gasifying agents. The experimental results indicate that compared to biomass air gasification, biomass oxygen/steam gasification improves hydrogen yield depending on the volume of downdraft gasifier, and also nearly doubles the heating value of fuel gas. The maximum lower heating value of fuel gas reaches 11.11 MJ/ N m(3) for biomass oxygen/steam gasification. Over the ranges of operating conditions examined, the maximum hydrogen yield reaches 45.16 g H-2/kg biomass. For biomass oxygen/steam gasification, the content of H-2 and CO reaches 63.27-72.56%, while the content Of H2 and CO gets to 52.19-63.31% for biomass air gasification. The ratio of H-2/CO for biomass oxygen/steam gasification reaches 0.70-0.90, which is lower than that of biomass air gasification, 1.06-1.27. The experimental and comparison results prove that biomass oxygen/steam gasification in a downdraft gasifier is an effective, relatively low energy consumption technology for hydrogen-rich gas production. (C) 2006 Elsevier Ltd. All rights reserved.
SubtypeArticle
Other AbstractBiomass gasification is an important method to obtain renewable hydrogen, However, this technology still stagnates in a laboratory scale because of its high-energy consumption. In order to get maximum hydrogen yield and decrease energy consumption, this study applies a self-heated downdraft gasifier as the reactor and uses char as the catalyst to study the characteristics of hydrogen production from biomass gasification. Air and oxygen/steam are utilized as the gasifying agents. The experimental results indicate that compared to biomass air gasification, biomass oxygen/steam gasification improves hydrogen yield depending on the volume of downdraft gasifier, and also nearly doubles the heating value of fuel gas. The maximum lower heating value of fuel gas reaches 11.11 MJ/ N m(3) for biomass oxygen/steam gasification. Over the ranges of operating conditions examined, the maximum hydrogen yield reaches 45.16 g H-2/kg biomass. For biomass oxygen/steam gasification, the content of H-2 and CO reaches 63.27-72.56%, while the content Of H2 and CO gets to 52.19-63.31% for biomass air gasification. The ratio of H-2/CO for biomass oxygen/steam gasification reaches 0.70-0.90, which is lower than that of biomass air gasification, 1.06-1.27. The experimental and comparison results prove that biomass oxygen/steam gasification in a downdraft gasifier is an effective, relatively low energy consumption technology for hydrogen-rich gas production.
KeywordBiomass Oxygen/steam Gasification Hydrogen Air Downdraft Gasifier
WOS HeadingsScience & Technology ; Technology
DOI10.1016/j.renene.2006.11.010
WOS Subject ExtendedEnergy & Fuels
URL查看原文
WOS KeywordCATALYTIC GASIFICATION ; STEAM GASIFICATION ; FLUIDIZED-BED ; TECHNOLOGIES
Indexed BySCI
Language英语
WOS SubjectEnergy & Fuels
WOS IDWOS:000248205400004
Citation statistics
Cited Times:176[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/3494
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada
Recommended Citation
GB/T 7714
Lv, Pengmei,Yuan, Zhenhong,Ma, Longlong,et al. Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier[J]. RENEWABLE ENERGY,2007,32(13):2173-2185.
APA Lv, Pengmei,Yuan, Zhenhong,Ma, Longlong,Wu, Chuangzhi,Chen, Yong,&Zhu, Jingxu.(2007).Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier.RENEWABLE ENERGY,32(13),2173-2185.
MLA Lv, Pengmei,et al."Hydrogen-rich gas production from biomass air and oxygen/steam gasification in a downdraft gasifier".RENEWABLE ENERGY 32.13(2007):2173-2185.
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