Ignition and Combustion Characteristics of Different Rank Coals in O2/CO2 Environments

被引：0

作者：

Zhou, Yuegui ^{[1
]}

Chu, Wei ^{[1
]}

Gu, Guangjin ^{[1
]}

Xu, Yangyang ^{[1
]}

Wendt, Jost O. L. ^{[2
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mech Engn, Inst Thermal Energy Engn, Shanghai 200240, Peoples R China

[2] Univ Utah, Inst Clean & Secure Energy, Dept Chem Engn, Salt Lake City, UT 84112 USA

来源：

CLEANER COMBUSTION AND SUSTAINABLE WORLD | 2012年

关键词：

Coal combustion; Ignition; O-2/CO2; environment; coal composition; TGA; PULVERIZED COAL; DEVOLATILIZATION;

D O I：

暂无

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：

Previous works on flame stability and stand-off distance under oxy-coal combustion conditions has been conducted with a co-axial turbulent diffusion burner for different rank coals in a 100kW pulverized coal test rig at the University of Utah. The pilot-scale results indicate that oxygen partial pressure and coal compositions have a significant effect on the ignition and flame stability of coal particles in the oxy-coal combustion. The aim of the present paper is to investigate the ignition and combustion characteristics of three different rank coals at variable oxygen partial pressures in O-2/N-2 and O-2/CO2 environments by Thermo-gravimetric Analyzer (TGA). The experimental results reveal the significant difference of the devolatilization, ignition and combustion properties between three rank coals in O-2/CO2 environments. It could provide fundamental understanding on pulverized coal combustion in O-2/CO2 environments and elucidate the effect of coal compositions on the ignition and flame stability in pilot-scale oxy-coal combustion.

引用

页码：868 / 874

页数：7

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