The Combustion Characteristics of Coal Blends under Low Oxygen Atmosphere Using the Thermogravimetric Analyzer

6th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Liu, Liangliang^1 ; Wang, Zhiqing^1 ; Qin, Yukun^1^2

National Engineering Lab for Coal-fired Pollutants Emission Reduction, Shandong Provincial Key Lab of Energy Carbon Reduction and Resource Utilization, Shandong University, Jinan

250061, China^1

School of Power Engineering, Harbin Institute of Technology, Harbin

150001, China^2

关键词: Coal blends;    Coats-Redfern method;    Combustion characteristics;    Combustion temperatures;    Low oxygen;    Thermogravimetric analyzers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/472/1/012066/pdf
DOI  :  10.1088/1757-899X/472/1/012066

来源: IOP

【 摘 要 】

Experiments on coal blends combustion were carried out using simultaneous TGA dynamic runs under low oxygen atmosphere. With the increasing of bituminous coal, the initial combustion temperature increases, however there is no obvious change in the burnout temperature. During coal blends combustion, lignite is dominant in the ignition stage, while bituminous coal has more influence on the burnout stage. The combustion characteristic index (S) indicates that adding bituminous coal will reduce the combustion characteristic of coal. The activation energy (E) is calculated by Coats-Redfern method. The results indicate that with the addition of bituminous coal, the activation increases from 12.58 to 38.4 KJ/mol.