某电厂煤粉管道积粉堵塞原因分析及改造方案  

Analysis of the Blockage of Coal Powder Pipeline in a Power Plant and the Transformation Scheme

作　　者：李明 马国伟 李航 LI Ming;MA Guowei;LI Hang(Yinchuan Branch of National Energy Group Science and Technology Research Institute Co.,Ltd.,Yinchuan 750000,China;School of Mechanical Engineering,Xinjiang University,Urumqi 830047,China)

机构地区：[1]国家能源集团科学技术研究院有限公司银川分公司,宁夏银川750000 [2]新疆大学机械工程学院,新疆乌鲁木齐830047

出　　处：《电力勘测设计》2023年第11期56-60,共5页Electric Power Survey & Design

摘　　要：针对国内某燃煤电厂1000 MW锅炉在C磨煤机出力增加到50t/h以上后,C8煤粉支管频繁堵塞导致磨煤机出力受限的问题,通过试验测试和数值模拟研究分析,找出引起上述问题的原因。采用在C04母管弯头加装可伸缩式导流板,调整煤粉细度R90控制在20%以内,将磨煤机的出力增加到90 t/h而不发生积粉堵塞,成功解决问题。Aiming at the problem that the output of the 1000MW boiler in a domestic coal-fired power plant increases to more than 50t/h,the C8 pulverized coal branch pipe is frequently blocked and the output of the coal mill is limited.the cause of the above problem.By adding a retractable deflector to the elbow of the C04 main pipe,adjusting the fineness of the pulverized coal within R90 in 20%,and increasing the output of the pulverizer to 90 t/h without the occurrence of powder blockage,the problem has been successfully solved.the question.

关 键 词：磨煤机 数值模拟 煤粉管道 积粉堵塞 导流板 

分 类 号：TM621[电气工程—电力系统及自动化]