高精度煤质成分快速定量分析 LIBS 系统研究

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.