摘要
通过设计与建立富氧燃烧模型,借助于数值模拟计算手段,得到了富氧燃烧的混合特性、燃烧特性及颗粒粒径、二次风温度对燃烧的影响。研究表明,富氧工况下CO的浓度明显提高,适当减小煤粉粒径更有利于着火,火焰特性也更接近于空气工况。当上、下风温度调高100K时,着火距离明显缩短,火焰形状发生了一定的变化。
Through design and establishment of the oxygen fuel combustion model and determination of boundary conditions,the combustion and mixing characteristics and the influence of the particle size and the secondary air temperature on the combustion under oxygen fuel combustion was obtained by means of numerical simulation method.It showed that under oxygen fuel combustion condition,the concentration of CO obviously increased and the suitable smaller particle size of the coal was more advantageous to fire,and then the flame characteristics were more close to that under the air condition.When the secondary air temperature rises100K,the ignition distance was shortened obviously,and the flame shape also changes.
作者
吴海波
柳朝晖
李延兵
王鹏
WU Haibo;LIU Zhaohui;LI Yanbing;WANG Peng(Shenhua Guohua (Beijing) Electric Power Research Institute Co.,Ltd,Beijing 100025;Huazhong University of Science and Technology,Wuhan,Hubei,430074)
出处
《神华科技》
2017年第2期63-65,74,共4页
Shenhua Science and Technology
关键词
富氧燃烧
数值模拟
混合特性
燃烧特性
Oxygen fuel combustion
Numerical simulation
Mixing characteristics
Combustion characteristics
