摘要
为研究抽风风筒内粉尘的沉积特性,采用数值模拟计算,研究了不同粒径粉尘随风速变化的规律,得出不同粒径粉尘随风速变化的沉积范围,结合试验的数据结果对风筒内粉尘的沉积质量、沉积率进行分析。结果表明:风速为5~15 m/s时,粒径为25~35μm粉尘的沉积范围、沉积质量随风速变化较大,增大风速可降低粉尘在风筒内的沉积率,除尘器前端抽尘风筒长度不宜超过30 m。
In order to study the deposition characteristics of dust in the suction duct, the law of dust with different particle size changing with the wind speed was studied by numerical simulation, and the deposition range of dust with different particle size changing with the wind speed was obtained. The deposition quality and deposition rate were analyzed based on the data of simulation test. The results show that when the wind speed is 5 to 15 m/s, the deposition range and quality of the dust with the particle size of 25 to 35 μm vary greatly with the wind speed. Increasing the wind speed can reduce the deposition rate of the dust in the air duct, and the length of the dust extraction air duct at the front end of the dust remover should not exceed 30 m.
作者
许洋铭
李德文
龚小兵
许圣东
王志宝
XU Yang-ming;LI De-wen;GONG Xiao-bing;XU Sheng-dong;WANG Zhi-bao(Chongqing Research Institute,China Coal Technology and Engineering Group,Chongqing 400037,China)
出处
《煤炭技术》
CAS
2020年第10期82-85,共4页
Coal Technology
基金
国家重点研发计划资助项目(2017YFC0805202)。
关键词
风筒
粉尘粒径
数值模拟
风速
沉积
air duct
dust particle size
numerical simulation
wind speed
deposition
