锅炉技术2023，Vol.54Issue(6)：53-57,5.
中心筒脱落前后旋风分离器内气体流动特性研究
Analysis of Gas Flow Characteristics in Cyclone Separator Before and After Central Cylinder Falling Off
郑秀平 1袁东辉 2李世雄 1韩文录 1王广龙 1胡朝友 1华岗 1李曙军1
作者信息
- 1. 内蒙古京泰发电有限责任公司,内蒙古鄂尔多斯 017000
- 2. 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司,内蒙古呼和浩特 010020
- 折叠
摘要
Abstract
Cyclone separator is one of the important equipment in the combustion system of circulating fluidized bed boiler.The falling off of central cylinder is a common problem affecting the safe operation of cyclone separator.In this paper,taking the cyclone separator of a 350 MW circulating fluidized bed boiler as the research object,the Reynolds Stress Model is used to simulate and analyze the gas flow characteristics in the cyclone separator before and after the center cylinder falling off.The calculation results show that the air flow structure in the cyclone separator does not change before and after the central cylinder falls off,including external swirling flow and internal swirling flow.When the central cylinder falls off,the longitudinal circulation and short-circuit flow in the upper part of the outer cylinder disappear,and part of the air flow flows directly from the central cylinder;The axial velocity and tangential velocity distribution of the air flow are similar,but the local velocity distribution and magnitude are different;The pressure distribution is similar,and the pressure difference between inlet and outlet decreases.关键词
旋风分离器/中心筒/气流特性/轴向速度/切向速度Key words
cyclone separator/central cylinder/gas flow characteristic/axial velocity/tangential velocity分类
能源科技引用本文复制引用
郑秀平,袁东辉,李世雄,韩文录,王广龙,胡朝友,华岗,李曙军..中心筒脱落前后旋风分离器内气体流动特性研究[J].锅炉技术,2023,54(6):53-57,5.
