中文摘要：

为研究松散煤体内高温区域自吸氧过程的温度分布规律,分析氧气输运类型及影响因素,在此基础上研制高温松散煤体自吸氧试验装置,并利用该装置测试不同温度热源作用下的不同粒径松散煤体温度。发现松散煤体高温区自吸氧过程中氧气运输有宏观气流携带效应及氧组分浓度差引起的分子扩散效应2种类型;热源温度及孔隙率是影响松散煤体高温区自吸氧的主要因素。研究结果表明,该装置能用于研究不同温度热源作用下不同粒径松散煤体内温度分布;热源温度一定时,松散煤体内同一测点的温度值随煤体粒径的增大而升高;热源对其上方松散煤体内温度的影响明显大于对下方的煤体,热对流效应对松散煤体内热量传递过程有很大影响。

英文摘要：

In order to study temperature distribution of loose coal during its high temperature oxygen absorption process,three things were done： analyzing types of transportation of oxygen and factors affecting it,developing an experimental device for high temperature loose coal,and carrying out a number of experiments with the device. It was found that oxygen transportation has two forms： airflow and concentration diffusion,and that the temperature of heat source and coal porosity are the main factors that influence the oxygen absorption process. The results show that temperature distribution in loose coal can be measured by using the device,that when the source temperature is a constant,an increase in coal particle size will mean an increase in the temperature,and that thermal convection has a great effect on the heat transfer process in the loose coal.