| 混煤焦的微观理化特性与燃烧反应性 |
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| 引用本文： | 平传娟,周俊虎,程军,钟英杰.混煤焦的微观理化特性与燃烧反应性[J].动力工程,2009,29(2). |
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| 作者姓名： | 平传娟 周俊虎 程军 钟英杰 |
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| 作者单位： | 平传娟,钟英杰,PING Chuan-juan,ZHONG Ying-jie(浙江工业大学能源与动力工程研究所,杭州,310014);周俊虎,程军,ZHOU Jun-hu,CHENG Jun(浙江大学能源清洁利用国家重点实验室,杭州,310027)
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| 摘 要： | 以无烟煤和烟煤的混煤焦为例,采用微观分析方法研究混煤焦的理化特性和燃烧反应性.结果表明:混煤焦具有较高的缩合程度,其比表面积呈非线性变化;混煤焦的孔隙以微孔为主,煤焦分形维数的变化规律与微孔比例变化一致;混煤焦等温燃烧反应的剧烈程度与煤焦的物理结构密切相关,比表面积越大,燃烧反应速率越高;混煤焦的燃尽时间与煤焦的孔隙结构关系不大,主要取决于其石墨化程度.
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| 关 键 词： | 混煤焦 微观理化特性 比表面积 分形维数 燃烧反应性 |
Micro-Physical and Chemical Properties and Combustion Reactivity of Blended Coal Chars |
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| PING Chuan-juan,ZHOU Jun-hu,CHENG Jun,ZHONG Ying-jie.Micro-Physical and Chemical Properties and Combustion Reactivity of Blended Coal Chars[J].Power Engineering,2009,29(2). |
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| Authors: | PING Chuan-juan ZHOU Jun-hu CHENG Jun ZHONG Ying-jie |
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| Affiliation: | 1.Institute of Energy & Power Engineering;Zhejiang University of Technology;Hangzhou 310014;China;2.State Key Lab of Clean Energy Utilization;Zhejiang University;Hangzhou 310027;China |
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| Abstract: | Taking the blended coal chars of anthracite and bituminous coal as examples,the physical and chemical properties and combustion reactivity of blended coal chars were investigated by micro-analysis method.Results show that blended coal chars have high polymerization degree,and the specific surface area of blended coal chars varies nonlinearly.Most pores of blended coal chars are micro-pores.And the variation of fractal dimension is accordant with the variation of micro-pore ratio. The isothermal combustion r... |
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| Keywords: | blended coal char micro-physical and chemical properties specific surface area fractal dimension combustion reactivity |
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