煤的自燃指标气体检测

采用煤体加热,吸附浓缩的方法对煤炭自燃过程进行模拟,找出自燃过程中指标气体的析出规律,绘制了浓度比例曲线。此方法大大提高了烯烃作为煤层自然发火指标气体的灵敏度,同时对烯烷比浓度比例曲线与实际发火情况进行对比以验证其规律的正确性,为及时预测预报自然发火和判断火区熄灭情况提供新的重要的参考依据。

Detection of Spontaneous Combustion Indication Gas of Coal

The separating-out regularity of indication gas during spontaneous combustion of coal was found and the proportion curve of gas concentration was drawn out by simulating the self-burning process of coal with absorption and concentrating method when coal was heated.This method greatly improved the sensitivity of alkene as an indication gas of spontaneous combustion of coal.For demonstrating the soundness of its separating-out regularity,comparison was made for the proportion curve of alkane concentration with the actual situation of spontaneous combustion,this thus provides a new and important basis for timely predicting spontaneous combustion and assessing the extinction situation in fire area.