基于E-鼻技术的煤炭自燃气体气味预测方法的研究
Chen Shaojie1, He Wentao2, Li Dongming3
1College of Safety Science and Engineering, North China Institute of Science and Technology, Langfang, 065201, Hebei, China. chenshaojie@ncist.edu.cn.
Scientific reports
|December 1, 2025
概括
一个电子鼻子通过分析气味配置文件,有效地预测煤炭自燃 (CSC) 阶段. 乙甲检测显示与温度有很强的相关性,使高风险采矿地区的早期预警系统成为可能.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 分析化学 分析化学
- 传感器技术 传感器技术
背景情况:
- 煤炭自燃 (CSC) 在采矿中构成重大安全风险.
- 早期发现CSC对于预防灾难性事件至关重要.
- 传统的监测方法在检测早期燃烧时存在局限性.
研究的目的:
- 开发和验证一个电子鼻子系统,用于预测煤炭自发燃烧 (CSC).
- 分析与不同CSC阶段相关的气味特征.
- 评估机器学习模型在CSC阶段预测中的有效性.
主要方法:
- 构建一个可编程温度煤炭电子鼻子测试设备 (PTC E-nose).
- 检测在模拟燃烧 (30-200°C) 期间由煤排放的挥发性化合物.
- 主要组件分析 (PCA) 和机器学习模型 (例如PCA-SVM) 的应用,用于气味分析和阶段分类.
主要成果:
- 乙甲基被确定为早期CSC阶段的关键挥发性化合物 (特征重要性0.38).
- 乙甲传感器响应与煤炭温度有很强的相关性 (R2=0.97).
- PCA有效地区分了CSC阶段,解释了92.45%的差异;PCA-SVM实现了>95%的准确性.
结论:
- 电子鼻子技术为监测和早期预警CSC提供了有效的方法.
- 气味分析,特别是乙甲检测,是CSC预测的可靠指标.
- 开发的系统适用于高风险的采矿环境,如区和断裂.
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