摘要
对端面旋流进风结构的新型煤粉燃烧器进行了冷态流场特性和热态中试实验。冷态实验结果表明 :端面旋流进风结构能获得对称、均匀的流场 ,燃烧器的进、出口结构对燃烧器内压力场和流场分布影响很大 ;出口直径的大小决定中心回流区域的大小 ;环形叶片进口位置的变化对燃烧器内流场的影响集中在燃烧器头部。热态实验表明 ,当煤粉粒径小于 0 .2 mm时 ,燃烧器内温度可达 16 0 0℃ ,能实现顺利排渣 。
In this paper,both the cold condition flow characteristic experiment and the hot condition experiment have been done in a novel lower ash coal pulverized combustor.The air enters the combustor by a guide blade row.In the cold condition experiment,the result shows the flow field distribution is symmetrical.Inlet diameter and outlet diameter are the key factors to influence the press and flow field distribution.The magnitude of the central backflow is decided by the outlet diameter completely. The different inlet diameter leads varied velocity field in the headspace of the combustor.In the hot condition experiment,when the diameter of the coal particle is less than 0.2 mm,the combustor runs normally,the slag can flow out easily,and the temperature can reach 1 600 ℃.
出处
《燃烧科学与技术》
EI
CAS
CSCD
2002年第4期293-296,共4页
Journal of Combustion Science and Technology
