COAL COMBUSTION CHARACTERISTIC AND ITS STRUCTURAL EVOLUTION UNDER OXY-FUEL AND AIR ENVIRONMENT
IntroductionOxy-Fuel combustion technology of pulverized coal is one of new promising methods to facilitate CO2 sequestration with low costs and to achieve pollutants emission reductions 1. This technology involves the combustion of pulverized coal in the mixture of oxygen and recirculated flue gas (mainly CO2) to reduce the net volume of flue gas from the combustion process and to substantially increase the concentration of carbon dioxide (CO2) in the flue gas. The chemical kinetics of coal combustion in O2/CO2 mixture is quite different from traditional coal combustion process in air. Previous results have shown that the replacement of N2 only by CO2 can cause significant differences in combustion furnace operation parameters such as burning stability, char burnout, heat transfer and gas temperature profiles. The flame propagation speed 2, flame stability and temperature profile in O2/CO2 environment are lower than those in air and the amount of unburned carbon is higher 3-9.
Qingzhao Li Changsui Zhao Xiaoping Chen Yufeng Dnan Weifang Wu Yingjie Li
School of Energy and Environment, Southeast University, Nanjing 210096, Jiangsu Province, PR China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
67-68
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）