Study on LIBS system for high-precision coal components rapid and quantitative analysis

LIU Shulin; WANG Meng; LI An; ZHANG Ying; LIU Xiaodong; LIU Ruibin

doi:10.37188/OPE.20243210.1470

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Study on LIBS system for high-precision coal components rapid and quantitative analysis

Micro/Nano Technology and Fine Mechanics | 更新时间：2024-06-11

- Study on LIBS system for high-precision coal components rapid and quantitative analysis
- Optics and Precision Engineering Vol. 32, Issue 10, Pages: 1470-1480(2024)
- 作者机构：
  
  1.西安科技大学机械工程学院，陕西西安 710054
  2.北京理工大学物理学院，北京 100081
- 作者简介：
- 基金信息：
- DOI：10.37188/OPE.20243210.1470
  CLC： O443.4
- Published：25 May 2024，
  
  Received：08 November 2023，
  
  Revised：20 December 2023，
- 稿件说明：
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刘树林,王猛,李安等.高精度煤质成分快速定量分析LIBS系统研究[J].光学精密工程,2024,32(10):1470-1480.

LIU Shulin,WANG Meng,LI An,et al.Study on LIBS system for high-precision coal components rapid and quantitative analysis[J].Optics and Precision Engineering,2024,32(10):1470-1480.
刘树林,王猛,李安等.高精度煤质成分快速定量分析LIBS系统研究[J].光学精密工程,2024,32(10):1470-1480. DOI： 10.37188/OPE.20243210.1470.

LIU Shulin,WANG Meng,LI An,et al.Study on LIBS system for high-precision coal components rapid and quantitative analysis[J].Optics and Precision Engineering,2024,32(10):1470-1480. DOI： 10.37188/OPE.20243210.1470.

摘要

煤质成分的快速、高精度定量分析是工厂对能源高效利用的重要环节。本文通过利用搭建的激光诱导击穿技术煤质快速分析仪，对所采集煤样工业特性固定碳（FixC），灰分（Ash），干燥无灰基的挥发分（Vdaf），热值（Q）进行了定量测量，并对测得的数据与实验室人工测量数据进行对比分析，检验得出该方法在煤质分析方面准确快速。通过对设备稳定性和动态精密度的测试，结果表明了快速煤质分析仪具有较高的稳定性，满足国标规定值。在预测灰分值分布跨度为5%~60%的煤样时，通过增加样品量，增加模型中对大灰分煤样的预测权重，实现预测均方根误差RMSEP<1%的预测精度，挥发分和全硫的RMSEP<1%，热值的RMSEP<0.18 MJ/kg。预测结果均达到工业分析要求，可以满足工业现场的应用需求，具有应用于煤质在线检测方面的广阔前景。

Abstract

The rapid and high-precision quantitative analysis of coal quality components is an important link for factories to efficiently utilize energy. This article quantitatively measured the industrial characteristics of fixed carbon （FixC）， ash （Ash）， volatile matter （Vdaf）， and calorific value （Q） of the collected coal samples using our laser induced breakdown technology coal quality rapid analyzer. The measured data were compared with manual measurement data in the laboratory， and it was verified that this method is accurate and fast in coal quality analysis. Through testing the stability and dynamic precision of the equipment， the results indicate that the rapid coal quality analyzer has high stability and meets the national standard requirements. When predicting coal samples with a distribution span of 5%~60% ash content， by increasing the sample size and increasing the prediction weight of high ash content coal samples in the model， the prediction accuracy of root mean square error RMSEP<1%， volatile matter and total sulfur RMSEP<1%， and calorific value RMSEP<0.18 MJ/kg can be achieved. The predicted results all meet the requirements of industrial analysis and can meet the application needs of industrial sites， with broad prospects for application in online coal quality detection.

关键词

激光诱导击穿光谱定量分析快速煤质分析稳定性

Keywords

Laser-Induced Breakdown Spectroscopy（LIBS)quantitative analysisrapid coal analyzerstability

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