The guidelines for the design and layout of oxy-fuel combustor based on the experiments of pulverized coal combusted in Ar,N2 and CO2 espectively
The oxy-fuel combustion technology is going to be a key solution for CO2 capture and sequestration.And the era of oxy-fuel combustion is approaching.However,the combustion characteristics,such as ignition,flame stability,and combustion duration,have changed because the coal particles are combusted in CO2 atmosphere.Thus,the novel design technologies of combustor used in oxyfuel combustion technology are demanded.We have concluded several critical rules from the experiment data obtained from the coal particles combusted in a retrofitted fixed bed reactor in Ar,N2 and CO2 respectively.The coal particles are prone to be ignited but take more time to burn up in CO2 atmosphere at low temperature of 1000℃ and 1300°C comparing to the data obtained from N℃ and Ar atmospheres under the same conditions.And when at high temperature of 1600℃,the combustion duration of coal particles combusted in CO2 is the same with that of Ar and N2 situation.The NOx is prone to released ahead of the carbon combustion at relatively high temperature,and the priority of NOx release to Carbon combustion is aggravated as the temperature increases.The overall analysis and comparison among the three atmospheres make the novel design and layout of oxy-fuel combustor feasible.Consequently,the guidelines for these aims basing on those rules conclude from the experimental data and the relative researchers work are discussed and a novel design of oxy-fuel burner is put forward and simulated in this paper.
oxy-fuel combustor combustion characteristics NOx,CO2
Yu li Weidong Fan Peng Ren Kang Wang Junchao Wang
School of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai,200240,China
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
629-636
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）