发电技术2024，Vol.45Issue(2)：199-206,8.DOI:10.12096/j.2096-4528.pgt.23164
330MW循环流化床锅炉深度调峰技术
Deep Peak Shaving Technology for 330 MW Circulating Fluidized Bed Boiler
摘要
Abstract
To promote the implementation of the"double carbon"policy,and consume new energy with high volatility,the current requirements for deep peak shaving of thermal power units are getting higher and higher.Circulating fluidized bed(CFB)boiler units have inherent advantages in the low load operation condition.However,the ultra-low load operation below 20%still faces many difficulties,such as the stability of the fluidization in the furnace,the emission of nitrogen oxides,and the safety brought by the local over-temperature in the furnace.This paper took the application of deep peaking technology of a 330 MW CFB boiler as an example and introduced the modification of the unit components,such as the coal conveying screening and crushing system,throttling rings of wind caps and lower secondary air pipes,etc.With the application of flue gas recirculation and other technologies,an 18%ultra-low load operation was successfully realized on this CFB boiler,and the NOx emission was also well controlled.The key points and difficulties of the ultra-low load operating technology of CFB unit were summarized.The potential problems caused by deep peaking operation were analyzed,and corresponding measures were proposed.The results of this study have an important engineering reference role.关键词
火电机组/循环流化床(CFB)锅炉/深度调峰/超低排放/烟气再循环Key words
coal-fired power unit/circulating fluidized bed(CFB)boiler/deep peak shaving/ultra-low emission/flue gas recirculation分类
能源与动力引用本文复制引用
张思海,李超然,万广亮,刘印学,徐海楠,黄中,杨海瑞..330MW循环流化床锅炉深度调峰技术[J].发电技术,2024,45(2):199-206,8.基金项目
国家重点研发计划项目(2022YFB4100300). Project Supported by National Key Research and Development Program of China(2022YFB4100300). （2022YFB4100300）
