Investigation of iron-containing powder on coal combustion behavior

被引：24
|
作者：
Zou, Chong [1 ]
Zhao, Junxue [1 ]
机构：
[1] Xian Univ Architecture & Technol, Sch Met Engn, Xian 710311, Shaanxi, Peoples R China
来源：
JOURNAL OF THE ENERGY INSTITUTE | 2017年 / 90卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Iron-containing powder; Blast furnace; Combustion behavior; Pulverized coal injection (PCI); HIGH ASH COAL; BLAST-FURNACE; INJECTION; DUSTS;
D O I：
10.1016/j.joei.2016.06.004
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：
Effects of iron-containing powder on coal combustion behavior were investigated using thermogravimetry (TG) and differential scanning calorimetric (DSC) analysis. The results indicated that the presence of hematite, BOF dust, and BOF sludge reduced ignition temperature, speeded up combustion rate, improved burnout behavior and enhanced the heat release rate during the coal combustion process. However, BF dust generally showed a negative effect on coal combustion behavior. Based on the results of kinetic study, XRD, SEM EDS and nitrogen adsorption analysis, the possible mechanism of intensified or suppressed combustion by these powder was proposed. The catalytic effect of these iron-containing powder on coal combustion is related not only with the constituents but also with the surface morphology and pore structure of these powder. (C) 2016 Energy Institute. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：797 / 805
页数：9
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