空气流和温度对煤炭二次氧化诱导自发燃烧风险的影响
Ruirui Yu1,2, Yiping Zhang1, Ziwen Dong2
1College of Mining, Guizhou University, Guiyang, Guizhou 550025, People's Republic of China.
ACS omega
|January 19, 2026
概括
深度采矿增加了自发燃烧的风险. 这项研究表明,空气流和热预处理相互作用,影响煤炭氧化,这对于矿山安全通风至关重要.
科学领域:
- 地质工程是地质工程.
- 采矿工程 采矿工程 采矿工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 采矿深度的增加导致地面温度的升高,从而增加了煤矿中自燃 (SC) 的风险.
- 了解不同条件下的二次氧化对于减轻地下矿山中SC风险至关重要.
研究的目的:
- 调查空气流和热预处理对煤炭二次氧化的联合影响.
- 确定不同的空气流速和预处理温度如何影响煤炭对自燃的易感性.
主要方法:
- 煤样品在35,50和65°C进行预处理.
- 实验包括将预处理的样品暴露在50至200毫升/分钟的空气流速中.
- 对氧化水平和二氧化碳 (CO2) 排放进行了监测.
主要成果:
- 在空气流速和预处理温度之间观察到协同作用.
- 低空气流量 (50-100毫升/分钟) 通过增加激活能量,在50°C的预处理煤中抑制氧化.
- 高空气流量 (150-200毫升/分钟) 在35°C和65°C预处理的煤炭中增强了反应性.
- 一种特定的组合 (50°C预处理+200毫升/分钟气流) 导致完全氧化和高二氧化碳排放.
结论:
- 通风策略必须考虑空气流和热史之间的相互作用,以有效管理SC风险.
- 这些发现提供了关键数据,用于优化深矿洞的通风,以防止自燃.
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