文章摘要信息

中国电机工程学报 2009, 29(5) 103-108 DOI: ISSN: 0258-8013 CN: 11-2107/TM

本期目录 | 下期目录 | 过刊浏览 | 高级检索 [打印本页] [关闭]

可再生能源发电

	扩展功能

	本文信息
	Supporting info
	PDF(352KB)
	[HTML全文]
	参考文献[PDF]
	参考文献
	服务与反馈
	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	引用本文
	Email Alert
	文章反馈
	浏览反馈信息
	本文关键词相关文章
	生物质
	加压气化
	热重分析
	反应动力学
	水蒸气
	本文作者相关文章
	肖军
	沈来宏
	邓霞
	王泽明
	仲晓黎
	PubMed
	Article by Xiao,j
	Article by Chen,L.H
	Article by Deng,x
	Article by Yu,Z.M
	Article by Zhong,X.L

秸秆类生物质加压气化特性研究

肖军，沈来宏，邓霞，王泽明，仲晓黎

东南大学热能工程研究所

摘要：采用热重分析与气相色谱分析(TG-GC)相结合的方法，开展了水蒸气气氛下生物质(麦秸)加压气化特性研究，探讨压力对反应动力学特性与气化产物的影响。实验结果表明生物质常压气化与加压气化特性有显著差异；加压条件下，麦秸的气化反应过程受化学反应动力学和扩散作用控制。麦秸水蒸气气氛下的热解阶段可视为一级反应，半焦气化阶段视为缩核反应；加压下热解、气化的表观活化能和频率因子均随反应压力的提高而增加。水蒸气对生物质热解气化具有活化作用，相比N2气下麦秸的表观活化能降低。此外，生物质水蒸气气化产物中H2浓度最大，达到50%以上，表明水蒸气是生物质气化制氢适宜的气化介质；随着气化压力的提高，CO2和CH4浓度增加，而CO浓度降低。

关键词：生物质加压气化热重分析反应动力学水蒸气

Study on Characteristics of Pressurized Biomass Gasification

XIAO Jun, SHEN Lai-hong, DENG Xia, WANG Ze-ming, ZHONG Xiao-li

Thermoenergy Engineering Research Institute, Southeast University

Abstract: Characteristics of pressurized steam gasification of biomass (wheat straw) were investigated by means of thermogravimetric analyzer and gas chromatographic analyzer (TG-GC). The effect of pressure on the kinetics of biomass gasification and gas composition of gasification production was discussed. The results show that the characteristics of pressurized steam gasification of biomass are different from that at the atmospheric pressure. Under the elevated pressure, the process of biomass gasification is controlled by both reaction kinetics and diffusion rate. Under the steam atmosphere, the process of biomass pyrolysis can be dealt with the first order reaction model, and gasification process can be dealt with a shrinking-core model. The apparent activation energy of pyrolysis and gasification increases with the gasification pressure. In addition, the supplement of steam is beneficial to biomass pyrolysis and gasification, and the apparent activation energy is smaller than that in the N2 atmosphere. Hydrogen content is the highest in the gas production of biomass gasification, and it reaches more than 50%. The result also shows that steam is a favorable agent for hydrogen production from biomass gasification, and the concentrations of CO2 and CH4 increase with gasification pressure, whereas CO decreases.

Keywords: biomass pressurized gasification thermo- gravimetric analysis reaction kinetics steam

收稿日期 2008-05-21 修回日期 2008-07-19 网络版发布日期 2009-03-10

DOI:

基金项目:

国家自然科学基金项目(50306002，20590367)；国家重点基础研究发展规划项目(2007CB210208)；新世纪人才支持计划项目(NCET-05-0470)。

通讯作者: 肖军

作者简介:

作者Email:

参考文献：

本刊中的类似文章

1．赵卫东刘建忠张保生周俊虎岑可法.水焦浆燃烧动力学参数求解方法[J]. 中国电机工程学报, 2008,28(17): 55-60

2．王爽姜秀民王宁于立军李祯何培民.海藻生物质灰熔融特性分析[J]. 中国电机工程学报, 2008,28(5): 96-101