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为了研究煤体在水环境浸泡后的自燃特性,通过煤自燃程序升温实验装置,对预先处理的水浸煤样和原煤样进行程序升温试验,对比分析了两者的指标性气体产生率和耗氧速率,发现当煤体温度升高至130℃左右时,浸泡煤样耗氧速率及CO、CO2生成率大于原煤样,并且其C2H6、C2H4产生的温度较原煤样的110℃提前到了90℃。分析研究上述实验结果,这是由于水浸煤体含水量及煤分子结构发生变化而造成的。
In order to study the spontaneous combustibility of coal after soaking in water environment, the preheated coal samples and raw coal samples were subjected to programmed temperature test by means of coal spontaneous combustion program temperature increasing device. The index gas production rate and consumption The results show that when the temperature of coal increases to about 130 ℃, the oxygen consumption rate and CO and CO 2 generation rate of soaked coal samples are higher than that of the original coal samples, and the temperatures of C2H6 and C2H4 are earlier than that of the original coal samples by 110 ℃ to 90 ℃ . Analysis and study of the above experimental results, which is due to changes in the water content of coal and water molecules caused by coal.