摘要
针对电站锅炉燃用煤种和负荷多变的问题，提出一种新型的旋流燃烧技术，即利用在一次风管中加装浓缩构件实行煤粉浓淡分离的浓淡旋流燃烧器。采用三维相位多普勒颗粒分析仪（ＰＤＡ）对浓淡旋流燃烧器和双调风旋流燃烧器出口区域两相流场进行了实验研究，得出了两种燃烧器几何结构下气固两相流场和浓度场的分布规律，并且进行了理论分析，证明了浓淡燃烧的优越性。
In view of problems that the coal kinds and the loads of the utility boilers are very
changable, presents a new swirl combustion technology, that is dense dilute swirl burnes in
which a concentrated component is fixed inside the primary air pipe in order to separate the
pulverized coal into dense one and dilute one. Using the three dimensional phase particle
Dopper analysor (PDA), has experimentally investigated two phas flow distribution on the outlet
zone of the both the dense dilute swirl burner and the double adjustmen air swirl burner. Has
find distribution laws of the both the gas solid two phase flow field and the concentration field
for the two types of the burners, has engaged theoretical analyses, and has proved advantages
of the dense dilute combustion.
出处
《电站系统工程》
1999年第3期46-51,共6页
Power System Engineering
关键词
旋流煤粉燃烧器
气固两相流
煤粉浓度
PDA
锅炉
dense dilute pulverized coal swirl burner
double
adjustmen air pulverized coal swirl burner
three dimensional phase particle Dopper analysor
(PDA)
central reflux zone
jet
gase solid two phas flow
pulverized coal concentration
