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确定煤炭自发燃烧的关键组和基于超声波提取的风险预测

Guoju Lu¹, Guofei Zhao¹, Liya Yu¹

¹Department of Safety Engineering, Shanxi Institute of Energy, Jinzhong 030600, China.

|January 6, 2025

概括

超声波提取有效地减少了煤炭的数量.

科学领域:

地质化学地质化学
材料科学材料科学材料科学

背景情况:

煤炭自发燃烧带来了重大的安全风险.
了解煤炭微观结构对于预测燃烧行为至关重要.

研究的目的:

研究超声波提取对煤炭微观结构和自燃特性的影响.
确定影响煤炭外热过程的关键功能组.

主要方法:

煤样品的超声波提取.
福里埃变换红外光谱学 (FTIR) 和差分扫描热量计 (DSC) 分析.
皮尔森相关性和多变量线性回归建模.

主要成果:

托卢烯和甲醇提取碳化合物;NMP和EDA提取含氧和基团.
所有的提取都降低了自燃风险指数.
-CH2-和 -OH-a组被确定为关键影响因素,其中 -CH2-具有更大的影响.

结论:

超声波提取改变了煤炭的微观结构,抑制了自发燃烧.
特定的功能组,特别是-CH2-,是煤炭自燃风险的关键预测因素.

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