瓦斯吸附和解吸过程中温度变化实验研究

Experimental study on temperature variation of gas being absorbed and extracted

介绍了采用实验方法测定煤体在吸附瓦斯和瓦斯解吸到达平衡状态的时间及过程中温度变化,得出了煤体吸附瓦斯过程是放热过程,瓦斯解吸过程是吸热过程;在吸附和解吸过程中,温度变化幅度随压力变化幅度的增加而增加;吸附能力越强的瓦斯气体,在被吸附时放出的热量越多,解吸时吸收的热量也越多等结论,对煤与瓦斯突出过程的热力学研究提供了基本依据。

An experimental method is introduced to measure the temperature variation of gas being absorbed and extracted. A series of conclusions are drawn, the process that gas is absorbed by coal is a heat releasing process, while the process in which gas is extracted from coal is a process of decalescence. In the course of absorption and extraction, the scale of temperature variation changes with the pressure variation of gas. The gas which has a greater ability of being absorbed releases much heat when it is absorbed and absorbs much heat when it is extracted. These provide the bais for thermodynamics research of coal and gas outburst.