中国电力2018，Vol.51Issue(2)：156-161,168,7.DOI:10.11930/j.issn.1004-9649.201611118
SCR脱硝装置大颗粒灰拦截技术试验研究
Experimental Study on the Technology of Large Particle Ash Interception for SCR De-NOx Equipment
金理鹏 1谢新华 1黄飞 1卢承政 1周健 1宋玉宝1
作者信息
- 1. 西安热工研究院有限公司苏州分公司,江苏苏州 215153
- 折叠
摘要
Abstract
To solve the problem of LPA (Large Particle Ash) plugging in the SCR de-NOx equipment,the study on the technology of LPA interception is performed with the usage of the physical model based experiments.The effects of the hole pattern,the external structure and the mounting position of the LPA screen on its ash removal efficiency and the system drag force are analyzed.Multiple combination schemes of the dust hopper,the deflector and the LPA screen are compared for the best technical solution.The experimental results demonstrate that the ash removal efficiency of the LPA screen with rectangular opening is better than that with square or hexagonal opening.The drag force of the LPA screen varies inversely to the third power of the opening ratio.There is no obvious difference between the pleated and flat LPA screens in terms of the ash removal efficiency and the drag force.It is observed that the ash removal efficiency of the combination scheme of the deflector,the deep dust hopper and the low LPA screen is more than 95％ when they are installed in the outlet of the economizer.The ash removal efficiency can be further improved when another dust hopper and a broken-line back wall are installed in the inlet of the vertical flue.关键词
电厂烟气脱硝/SCR/大颗粒灰/拦截技术/物理模型试验Key words
power plant de-NOx/SCR/large particle ash/interception technology/physical model experiment分类
信息技术与安全科学引用本文复制引用
金理鹏,谢新华,黄飞,卢承政,周健,宋玉宝..SCR脱硝装置大颗粒灰拦截技术试验研究[J].中国电力,2018,51(2):156-161,168,7.
