摘要
炉管氧化皮生成、脱落在超临界机组中是一个比较普遍的问题,近年来因氧化皮脱落堵塞已造成多起锅炉爆管事故,因此对氧化皮的分析和研究具有非常重要的意义。为控制此类事故发生,减少火电厂经济损失,围绕超临界锅炉高温受热面管内氧化皮的生成、脱落机理等方面展开分析,并在此基础上提出了预防超临界锅炉因氧化皮脱落、堵塞而引起爆管的关键技术,为火力发电厂机组运行提供借鉴和参考。
The formation and exfoliation of oxide scale of boiler tube is a common problem in supercritical unit.In recent years,many boiler tube burst accidents have been caused by oxide scale exfoliation and blocking.Therefore,it is of great significance to analyze and study oxide scale.In order to control such accidents and reduce economic losses of thermal power plants,this paper focuses on the formation and exfoliation mechanism of oxide scale in high temperature heating surface tubes of supercritical boilers.On this basis,the key technologies to prevent tube explosion caused by oxide scale exfoliation and blockage are proposed,which can provide reference for the operation of thermal power plants.
作者
蒙玉仓
崔振涛
MENG Yucang;CUI Zhentao(Hongsheng Electric Heating Company,Jiayuguan 735100,China)
出处
《锅炉技术》
北大核心
2022年第4期57-61,共5页
Boiler Technology
关键词
超临界机组锅炉
氧化皮
生成脱落机理
临界温度变化速率
防治关键技术
减温水
干湿态转换
supercritical unit boiler
oxide scale
formation and exfoliation mechanism
critical temperature change rate
key prevention and control techniques
desuperheating water
dry-wet state conversion
