多指标特征提取和温度预测模型用于自发燃烧和氧化煤的自发燃烧和氧化
Xuming Shao1, Xiaojun Zhang2, Wenhao Liu3
1Safety Science and Engineering College, Liaoning Technical University, Huludao, Liaoning, 125105, China.
Scientific reports
|December 4, 2025
概括
这项研究引入了一种先进的ITOC-KELM模型,用于利用气体排放来预测煤炭自燃温度. 该模型表现出高精度,为矿山安全和早期风险检测提供了强大的解决方案.
科学领域:
- 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.
- 数据科学数据科学数据科学
背景情况:
- 煤炭自发燃烧是一个重要的矿山安全危险.
- 准确的温度预测对于预警系统至关重要.
- 了解煤炭氧化和气体演变是防止火灾的关键.
研究的目的:
- 开发一个强大的,数据驱动的模型来预测煤炭自燃温度.
- 为了捕捉煤炭氧化气体和温度之间的非线性关系.
- 通过智能早期检测和风险评估,提高矿山安全.
主要方法:
- 对煤样品进行编程加热实验,以分析氧化和气体排放.
- 选择12个与气体相关的指标 (单个气体和比率) 作为输入特征.
- 开发一个改进的龙卷风优化器与科里奥利斯力 (ITOC) -Kernel极端学习机器 (KELM) 模型 (ITOC-KELM).
- 统计分析和多对线性测试 (VIF) 用于数据变化和模型稳定性.
- SHAP分析解释模型行为和特征影响.
主要成果:
- ITOC-KELM模型实现了高的预测准确性 (R2 = 0.9465,MAPE = 21.26%).
- 影响温度预测的关键气体包括CO,CO2和C2H4.
- 与七个基准模型相比,该模型表现出卓越的性能和稳定性.
- 对独立数据集的验证证实了强大的概括性和适用性.
结论:
- ITOC-KELM模型为智能早期检测煤炭自燃提供了一个有效的框架.
- 该研究强调了多气体分析对于准确的温度预测的重要性.
- 挑战包括获得高质量的数据集和在地下环境中实时部署.
更多相关视频
07:24Combustion Chemistry of Fuels: Quantitative Speciation Data Obtained from an Atmospheric High-temperature Flow Reactor with Coupled Molecular-beam Mass Spectrometer
Published on: February 19, 2018
10.4K
08:16Combustion Characterization and Model Fuel Development for Micro-tubular Flame-assisted Fuel Cells
Published on: October 2, 2016
9.9K
相关概念视频
02:14Combustion Energy: A Measure of Stability in Alkanes and Cycloalkanes
7.6K
The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were initially termed as “paraffins,” derived from the Latin words: parum, meaning “too little,” and affinis, meaning “affinity.”
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
7.6K
02:41Constant Volume Calorimetry
30.4K
Calorimeters are useful to determine the heat released or absorbed by a chemical reaction. Coffee cup calorimeters are designed to operate at constant (atmospheric) pressure and are convenient to measure heat flow (or enthalpy change) accompanying processes that occur in solution at constant pressure. A different type of calorimeter that operates at constant volume, colloquially known as a bomb calorimeter, is used to measure the energy produced by reactions that yield large amounts of heat and...
30.4K
02:39Indicators
57.5K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
57.5K
02:12Enthalpy and Heat of Reaction
9.6K
Combustion, commonly known as burning, is a reaction in which a substance reacts with an oxidizing agent, which in most cases is molecular oxygen, to liberate energy in the form of heat, light, or sound. The heat of combustion is also known as the enthalpy of combustion. The energy released when one mole of a substance undergoes complete combustion at constant pressure is called molar heat of combustion. Combustion reactions are exothermic; that is, they release energy, and their ΔH sign...
9.6K
01:02Flame Photometry: Overview
1.4K
Flame photometry, also known as flame emission spectrometry, is a technique used for the qualitative and quantitative analysis of elements present in a sample using a flame as the source of excitation energy. The concept of flame photometry was realized in the early 1860s by Kirchhoff and Bunsen, who discovered that specific elements emit characteristic radiation when excited in flames. The first instrument developed for this purpose was used to measure sodium (Na) in plant ash using a Bunsen...
1.4K
02:46Quantifying Heat
61.5K
Thermal Energy Microscopically, thermal energy is the kinetic energy associated with the random motion of atoms and molecules. Temperature is a quantitative measure of “hot” or “cold”, which depends on the amount of thermal energy. When the atoms and molecules in an object are moving or vibrating quickly, they have a higher average kinetic energy (KE) (or higher thermal energy), and the object is perceived as “hot”, or it is described as being at a higher temperature. When the...
61.5K