GS4366型磨煤机分离器性能的数值研究  

Numerical Study on Separator Performance of GS4366 Coal Mills

作　　者：俞卫新 匡江红[2] 曹汉鼎[3] 熊显巍[3] 

机构地区：[1]四川中电福溪发电有限公司,宜宾645152 [2]上海工程技术大学,上海201620 [3]上海发电设备成套设计研究院,上海200240

出　　处：《发电设备》2012年第3期149-152,共4页Power Equipment

摘　　要：针对在建的四川中电福溪发电有限公司600MW机组锅炉采用的GS4366型钢球磨煤机的分离器的性能,采用气固双相数值模拟计算的方法,得到了调节挡板开度为64°及90°时分离器内部的气粉流场及38°～90°时分离器对各种粒度煤粉的分离效果。结果表明:挡板开度在38°～64°时有分离效果。建议在此范围内增加调节点,使分离器总体上能满足制粉系统煤粉细度及均匀性要求。Regarding the separator performance of a GS4366 coal ball mill for the 600 MW unit boiler under-construction in Sichuan CPI Fuxi Power Co., Ltd., a numerical simulation of gas-solid two-phase flow has been carried out to obtain gas-powder flow field in the separator at baffle openings of 64° and 90°, and determine separation effect for different particle sizes at a baffle opening in 38°-90°. Results show that the separation efficiency is relatively high when the baffle opening is in 38°-64°, therefore it is proposed to add adjustment points within this range to make the fineness and uniformity of coal powder in coal pulverizing system meet relevant requirements.

关 键 词：磨煤机 粗粉分离器 气固双相 挡板开度 粒度分布 数值模拟 

分 类 号：TK223.25[动力工程及工程热物理—动力机械及工程]