Application analysis of determination of carbon,hydrogen and nitrogen in coal by adsorption analysis thermal conductivity method
FU Kun
LI Yanyan
CHEN Sihan
Abstract：The determination of carbon,hydrogen and nitrogen content in coal by adsorption analysis-thermal con-ductivity method has the characteristics of high degree of automation and short measurement cycle,which can make up for the complex operation steps,long measurement cycle and high requirements for operators.To explain the prin-ciple of adsorption analysis-thermal conductivity method,from the injection and oxygen system,combustion and re-duction system,separation system and detection system,the basic structure of German Vario Macro cube element an-alyzer were analyzed.The principle of thermal conductivity detector were demonstrated in the way of illustration and chemical equation of carbon,hydrogen and nitrogen content.From the reaction tube reagent filling,instrument cleaning,air tightness inspection,blank experiment,sample weighing,instrument calibration,drift correction,the notices of determination of carbon,hydrogen and nitrogen in coal by adsorption analysis thermal conductivity method were demonstrated,which can help coal quality inspectors better understand and master the operation of ele-ment analyzers,and ensure accurate determination of carbon,hydrogen,and nitrogen content in coal.
Keywords：adsorption analysis-thermal conductivity methodelement analyzercarbonhydrogennitrogenair tightness checkinstrument calibrationdrift correction
Publication Date：2025-01-09