Structure and behavior of soot in pulverized-coal flame

被引：0
|
作者：
Zhuo, Jian-Kun [1 ]
Li, Shui-Qing [1 ]
Song, Qiang [1 ]
Yao, Qiang [1 ]
机构：
[1] Key Laboratory of Thermal Science and Power Engineering, Tsinghua University, Beijing 100084, China
来源：
Ranshao Kexue Yu Jishu/Journal of Combustion Science and Technology | 2009年 / 15卷 / 01期
关键词：
Coal - Nanostructures - Pulverized fuel - Coal dust - High resolution transmission electron microscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, the soot generated from a pilot-scale 25 kW down-fired combustor was extensively investigated by using a nitrogen-aspirated, water-cooling isokinetic probe with two-stage dilution. A 13-stage electric low pressure impactor (ELPI) was used to deposit particles, among which the last six stages were selected for the further analysis by the high-resolution transmission electron microscopy (HRTEM). The result indicates that different experiences of soot particles in coal flames cause different nanostructures of soot, which reflects the complex mechanisms of soot particles in high temperature oxidative ambiences, including the formation of primary particles, graphitization, oxidation and the interaction between soot and metals connected with organic compounds during coal devolatilization.
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页码：74 / 81
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