Gasification and combustion kinetics of a high-ash-fusion-temperature coal using thermogravimetric analysis

被引:0
作者
Dandan Chen
Changsheng Bu
Xinye Wang
Jubing Zhang
Nobusuke Kobayashi
Guilin Piao
Yong Jiang
Haoyu Feng
Yuhao Dou
机构
[1] Nanjing Normal University,Jiangsu Provincial Key Laboratory of Materials Cycling and Pollution Control, School of Energy and Mechanical Engineering
[2] Gifu University,Environmental and Renewable Energy Systems
[3] Zhongan Joint Coalification Co.,undefined
[4] LTD,undefined
来源
Journal of Thermal Analysis and Calorimetry | 2021年 / 143卷
关键词
High-ash-fusion-temperature coal; Kinetics; Complementary method; Gasification; Combustion;
D O I
暂无
中图分类号
学科分类号
摘要
The gasification/combustion kinetics of a typical Chinese high-ash-fusion-temperature (AFT) coal char, Huainan (HN) coal char, are analyzed using a thermogravimetric analyzer in this paper. The carbon conversion rate and the gasification/combustion reaction rate characteristics of HN coal char are studied. The initial gasification/combustion reaction rates are also analyzed in this paper. Results show that at 1300 °C, the gasification and combustion processes are changed from the chemical reaction control zone to the pore diffusion control zone. Thus, 1300 °C is recommended as the gasification temperature of the non-slagging EFGs system using high-AFT HN coal. Based on the isothermal method, a complementary method of iso-conversional and model based is used to analyze the gasification and combustion kinetics of HN coal char. The gasification/combustion reaction order m and activation energy E of HN coal char are obtained by iso-conversional method. The kinetic model equation f(α) is obtained based on a modified master plot method. The kinetic exponent n and the pre-exponential factor k0 are obtained by model-based method. The results of this work provide the useful data for designing the non-slagging EFGs using high-AFT coals.
引用
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页码:3209 / 3220
页数:11
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