山东煤炭科技2025，Vol.43Issue(3)：64-68,5.DOI:10.3969/j.issn.1005-2801.2025.03.013
高瓦斯自燃煤层不同氧化起始温度下煤自燃特性实验研究
Experimental Study on Coal Spontaneous Combustion Characteristics Under Different Oxidation Initial Temperatures in High Gas Spontaneous Combustion Coal Seam
秦兴林 1倪兴 1张清清1
作者信息
- 1. 中煤科工集团沈阳研究院有限公司,辽宁 抚顺 113112||煤矿安全技术国家重点实验室,辽宁 抚顺 113122
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摘要
Abstract
In order to investigate the influence of different oxidation initial temperatures on the coal spontaneous combustion characteristics of high gas spontaneous combustion coal seams,a coal spontaneous combustion characteristics comprehensive testing system is used to test the oxygen consumption situation of coal samples from the 15#coal seam during low-temperature oxidation processes at different initial temperatures(20-40℃)to 70℃.The experimental results show that the initial oxidation temperature has a significant impact on the oxidation characteristics of coal in the slow oxidation stage.The higher the initial oxidation temperature,the greater the oxygen consumption amount and oxygen consumption rate,and the faster the heat production and heating rate.In addition,as the temperature increases,the concentration of CO continues to increase,and coal samples with high initial oxidation temperatures release more CO concentration.In the temperature range of 20-40℃,the active groups of coal are consumed more,which affects the activity of subsequent reactions.Coal with relatively high initial temperature exhibits higher oxidation activity in this temperature range.As the initial oxidation temperature increases,the cross point temperature of coal decreases,indicating that the oxidation reaction of coal is more likely to reach the critical point of spontaneous combustion.This phenomenon is of great significance for evaluating the risk of coal spontaneous combustion and developing corresponding safety measures.关键词
高瓦斯自燃煤层/自燃特性/氧化起始温度/自燃阶段Key words
high gas spontaneous combustion coal seam/spontaneous combustion characteristics/oxidation initial temperature/spontaneous combustion stage分类
矿业与冶金引用本文复制引用
秦兴林,倪兴,张清清..高瓦斯自燃煤层不同氧化起始温度下煤自燃特性实验研究[J].山东煤炭科技,2025,43(3):64-68,5.
