Effect of different reaction atmospheres on the sintering temperature of Jincheng coal ash under pressurized conditions

被引：45
作者：
Jing, Nijie [1 ]
Wang, Qinhui [1 ]
Luo, Zhongyang [1 ]
Cen, Kefa [1 ]
机构：
[1] Zhejiang Univ, State Key Lab Clean Energy Utilizat, Hangzhou 310027, Zhejiang, Peoples R China
来源：
FUEL | 2011年 / 90卷 / 08期
关键词：
Pressurized pressure-drop technique; Pressure; XRD; Sintering temperature; GLASS-CERAMICS; COMBUSTION; GASIFICATION; BEHAVIOR; BOILER; PFBC;
D O I：
10.1016/j.fuel.2011.04.013
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：
The sintering temperature of coal ash is studied to further understand ash behavior. The objective of this study is to obtain a detailed understanding of the effect of the reaction atmospheres on the sintering temperature under elevated pressure. A series of experiments and analyses have been completed using a pressurized pressure-drop measuring device and X-ray diffractometer (XRD) analyzer. The results show that the sintering temperatures decline markedly under all reaction atmospheres with the rise in pressure. The pressure influences the sintering temperatures by affecting the reaction rate and the mineral transformations undergone by the coal ash, as observed from the XRD patterns. The sintering temperatures measured under the reducing reaction atmospheres are lower than those for oxidizing atmospheres. The sintering temperature under N(2) is lower than those under other oxidizing atmospheres. The sintering temperature under the gasification atmosphere is close to those under H(2) and CO atmospheres, whereas the sintering temperature under a H(2) atmosphere is lower than that under a CO atmosphere. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2645 / 2651
页数：7
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