Ignition and Combustion Characteristics of Different Rank Coals in O2/CO2 Environments
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 pilotscale 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 O2/N2 and O2/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 O2/CO2 environments.It could provide fundamental understanding on pulverized coal combustion in O2/CO2 environments and elucidate the effect of coal compositions on the ignition and flame stability in pilot-scale oxy-coal combustion.
Coal combustion Ignition O2/CO2 environment coal composition TGA
Yuegui Zhou Wei Chu Guangjin Gu Yangyang Xu Jost O.L.Wendt
Institute of Thermal Energy Engineering,School of Mechanical Engineering,Shanghai Jiao Tong Universi Department of Chemical Engineering,Institute for Clean and Secure Energy,University of Utah,UT 84112
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
868-874
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）