The influence of high-temperature crystallite growth and petrography of pulverized char on combustion characteristics

被引：18
|
作者：
Xu, XC [1 ]
Chen, Q [1 ]
Fan, HL [1 ]
机构：
[1] Tsing Hua Univ, Dept Thermal Engn, State Lab Clean Combust Coal, Beijing 100084, Peoples R China
来源：
FUEL | 2003年 / 82卷 / 07期
关键词：
thermal deactivation of char crystallite growth; char combustion performance; thermogravimetry analysis;
D O I：
10.1016/S0016-2361(02)00380-0
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this paper, Yangquan anthracite was separated into three different coal lithotypes in terms of density. The effect of high-temperature crystallite growth on char combustion of coal is characterized. It shows that there is large difference between the combustion characteristics of the two lithotypes of coal (one is < 1.55 g/ml of density and the other is 1.55-1.855 g/ml), and that the development of structural ordering decrease the combustion rate to a certain degree. The precise method of using thermogravimetry analyser to study the kinetics of char combustion reaction is also discussed. Besides, a feasible measure to process the experimental data is introduced. (C) 2002 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：853 / 858
页数：6
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