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Analysis of Chernogorsk Coal before and after Oxidative Carbonization
Coke and Chemistry Pub Date : 2022-08-15 , DOI: 10.3103/s1068364x22050064
A. V. Zhuikov , O. Yu. Fetisova , D. A. Loginov

The basic combustion characteristics and kinetic parameters of Chernogorsk coal are determined before and after carbonization. The method employed is thermal analysis in an oxidative atmosphere with fuel heating at 20°C/min. The following characteristics of fuel combustion are determined from the curves of mass loss, rate of mass variation, and differential scanning calorimetry: the ignition temperature; the combustion temperature; the maximum reaction rate and the corresponding temperature; and endothermal and exothermal effects. By the Coats–Redfern method, the basic kinetic parameters of the coal before and after carbonization are determined. By electron microscopy, the surface of the fuel particles is qualitatively assessed. The results may be used in the design of thermal and energy equipment. Coal carbonization increases the ignition temperature by 3% and the combustion temperature by 17%. The maximum reaction rate is decreased. The activation energy and preexponential factor are lower after carbonization.



中文翻译:

切尔诺戈尔斯克煤氧化碳化前后分析

炭化前后确定了切尔诺戈尔斯克煤的基本燃烧特性和动力学参数。采用的方法是在氧化气氛中以 20°C/min 的速度加热燃料进行热分析。从质量损失曲线、质量变化率曲线和差示扫描量热曲线可以确定燃料燃烧的下列特性: 点火温度;燃烧温度;最大反应速率和相应的温度;以及吸热和放热效应。通过 Coats-Redfern 方法,确定了炭化前后煤的基本动力学参数。通过电子显微镜对燃料颗粒的表面进行定性评估。研究结果可用于热能设备的设计。煤碳化使着火温度提高了 3%,燃烧温度提高了 17%。最大反应速率降低。碳化后活化能和指前因子较低。

更新日期:2022-08-15
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