高精度煤质成分快速定量分析LIBS系统研究OA北大核心CSTPCD

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 characteris-tics 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 ac-curate and fast in coal quality analysis.Through testing the stability and dynamic precision of the equip-ment,the results indicate that the rapid coal quality analyzer has high stability and meets the national stan-dard requirements.When predicting coal samples with a distribution span of 5%～60%ash content,by in-creasing the sample size and increasing the prediction weight of high ash content coal samples in the mod-el,the prediction accuracy of root mean square error RMSEP<1%,volatile matter and total sulfur RM-SEP<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 pros-pects for application in online coal quality detection.