生物质流化床氧气-水蒸气气化实验研究

苏德仁; 刘华财; 周肇秋; 阴秀丽; 吴创之

生物质流化床氧气-水蒸气气化实验研究

1.
中国科学院广州能源研究所中国科学院可再生能源与天然气水合物重点实验室, 广东广州 510640;
2.
中国科学院研究生院, 北京 100049

基金项目: 国家高技术研究发展计划(863计划, 2007AA05Z410, 2009AA05Z434);中国科学院创新方向项目(KGCX2-YW-329)。

详细信息

通讯作者:
阴秀丽, 研究员, 研究方向为生物质能源利用, E-mail: xlyin@ms.giec.ac.cn。

中图分类号: TK6
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出版历程
- 收稿日期: 2011-04-03
- 刊出日期: 2012-03-31

Biomass gasification with oxygen and steam in a fluidized bed gasifier

1.
Key Laboratory of Renewable Energy and Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

摘要

摘要: 在小型流化床气化装置上进行了氧气-水蒸气气化实验,考察了原料、当量比、水蒸气配比、温度、二次风和床料对气化特性的影响。结果表明,原料中C和H含量越高,气化气中H₂和CO含量越高,焦油含量越低;当量比为0.27和水蒸气配比为0.6时,H₂含量达到最大值;温度的升高可提高H₂含量,在840 ℃以上,可提高CO含量;二次风从进料口偏上且二次风比率为15%通入,气体组分变化较明显,二次风通入点位置越高,焦油含量降低幅度越大;白云石和石灰石裂解焦油和提高H₂含量的活性高于橄榄石,但同时明显提高了气体中的灰分含量。
- 生物质 /
- 流化床 /
- 气化 /
- 氧气-水蒸气
Abstract: The characteristics of biomass gasification with oxygen-steam mixtures in a fluidized bed are studied in this paper. The effects of feedstock, equivalence ratio (ER), steam to biomass ratio (S/B), gasification temperature, secondary oxygen supply and bed materials on gasification performance were investigated. The results showed that higher C and H content of feedstock was more favorable for higher H₂ and CO content and lower tar content of fuel gas. The H₂ content increased with gasification temperature and reached its maximum at ER=0.27 and S/B=0.6. Higher gasification temperature (>840 ℃) also contributed to higher CO content. The introduction of secondary flow upper the feedstock inlet with a second flow ratio of 15% improved the gas quality significantly, and more tar was reduced as the secondary flow inlet move upward the gasifier. Dolomite and limestone performed better than olivine on cracking tar and increasing H₂ content, but resulted in higher ash content.
- biomass /
- fluidized bed /
- gasification /
- oxygen-steam

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参考文献(16)

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