| 湿度对煤自燃倾向性影响 |
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| 引用本文： | 姜德义,李林,Bemishsil.湿度对煤自燃倾向性影响[J].重庆大学学报(自然科学版),2008,31(12):1451-1454. |
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| 作者姓名： | 姜德义 李林 Bemishsil |
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| 作者单位： | 重庆大学西南资源开发及环境灾害控制工程教育部重点实验室;澳大利亚昆士兰大学工学院; |
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| 基金项目： | 国家自然科学基金重点资助项目
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国家创新研究群体基金资助项目
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国家留学基金资助项目
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| 摘 要： | 煤自燃多因素影响的结果,主要是煤中的活性部位与空气中氧气的放热反应过程.水在煤氧化反应过程中起重要作用,湿度影响煤中氧化反应的活性结构,从而影响煤的自燃倾向性.通过2组干煤和湿煤煤样的绝热氧化实验,得到煤样绝热氧化温度随湿度变化曲线,表明煤的湿度对煤自热性质有明显的影响.由于氧化过程产生的热量不能弥补蒸发损失的热量,一般温度降到大约40%～50%左右,煤的自热会强烈增加.随着煤湿度的增加,煤的自热率也增加.
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| 关 键 词： | 湿度 自燃 倾向性 绝热试验 |
The effect of moisture content on the tendency of coal to combust spontaneously |
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| JIANG De-yi,LI Lin,BEAMISH B Basil.The effect of moisture content on the tendency of coal to combust spontaneously[J].Journal of Chongqing University(Natural Science Edition),2008,31(12):1451-1454. |
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| Authors: | JIANG De-yi LI Lin BEAMISH B Basil |
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| Institution: | JIANG De-yi1,LI Lin1,BEAMISH B Basil2(1.Chongqing University,Key Laboratory for the Exploitation of Southwestern Resources , Environmental Disaster Control Engineering,Ministry of Education,Chongqing 400030,P.R.China,2.University of Queensl,,School of Engineering,Brisbane 4079,Australia) |
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| Abstract: | The self-heating of coal is influenced by many factors,but mainly it involves exothermic reactions between reactive sites in the coal and oxygen from the air.Moisture affects the nature of the radical sites where oxidation occurs,and affects the tendency of coal to combust spontaneously.Adiabatic tests show the coal self-heating rate increases as the moisture content increases.At approximately 40% to 50% of the moisture holding capacity of the coal,the self-heating rate becomes measurable.Above this critica... |
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| Keywords: | moisture content self-heating tendency adiabatic test |
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