摘要
针对煤低温氧化实验装置系统,在煤样平均粒度为2.0mm、装填系数为0.75～0.85、空气流速为10cm/min、相对湿度为80%～85%的条件下进行了3个煤样的实验测试;并根据热力学与传热传质学理论,遵循能量守恒定律和质量守恒定律,建立了描述煤低温氧化自热的数学模型。数值解算结果与实际试验结果得到了较好的验证,表明该模型可以用来模拟煤低温氧化自热过程,对煤自然发火期进行预测。
With the parameters of 2.0 mm average granularity of coal samples,0.75～0.85 filling coefficient,10 cm/min air flow rate and 80%～85% air relative humidity,three experiments were carried out.Based on the thermodynamics and heat and mass transfer theory,following the laws of conservation of energy and mass,the mathematical model of low temperature and self-heating of coal was developed.The mathematical results were fully validated by experimental of coal samples.It is shown that the model can simulate the low temperature oxidation and self-heating of coals,and predict the spontaneous combustion period.The method and results can be used as the base data and be helpful to improve the techniques for fighting spontaneous combustion in coal mines.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
2010年第6期956-959,共4页
Journal of China Coal Society
基金
"十一五"国家科技支撑计划课题(2006BAK03B05
2006BAK03B10)
国家自然科学基金资助项目(50974072)
关键词
煤
低温氧化
自热
数学模型
自然发火
coal
low temperature oxidation
self-heating
mathematical model
spontaneous combustion
