摘要
针对某热电厂锅炉出现的全大屏出口汽温偏高、减温水量增加,受热面管壁易超温等问题。从锅炉氧量、风煤比、二次风配风、风箱压差及燃尽风调整等方面开展现场燃烧优化调整试验。结果表明:在氧量优化调整试验中,通过对比3种工况下的氧量得出锅炉最佳运行氧量为1.3%;在配风及其他优化调整试验中,从整体上关小燃尽风门及二次风门提高风箱压差后,可进一步提高锅炉燃烧效率,CO浓度大幅降低。通过开大周界风用以增强一次风刚性,降低水冷壁结渣倾向,通过结合多个工况的优化调整试验得出锅炉机组最佳运行工况。在保证锅炉污染排放达标的同时,为电厂锅炉实际运行最佳燃烧工况运行提供指导数据,准确掌握相关设备性能的实际工况。
In view of the problems of the boiler in a thermal power plant,such as the high steam temperature at the outlet of the full screen,the increase of desuperheating water volume,and the overheating of the heating surface pipe wall,etc.Carry out on-site combustion optimization and adjustment tests from the aspects of boiler oxygen adjustment,air coal ratio adjustment,secondary air distribution adjustment,bellows differential pressure adjustment and burnout air adjustment.The research results show that:in the oxygen optimization and adjustment test,by comparing the oxygen content under three working conditions,the best operating oxygen content of the boiler is 1.3%;In the air distribution and other optimization and adjustment tests,the boiler combustion efficiency can be further improved and the CO concentration can be greatly reduced by turning down the burnout damper and the secondary damper as a whole and increasing the differential pressure of the bellows.The best operating condition of the boiler unit is obtained by opening the perimeter air to enhance the rigidity of the primary air and reduce the slagging tendency of the water wall.The above combustion optimization and adjustment measures not only ensure that the boiler pollution emission meets the standard,but also provide guidance data for the actual operation of the boiler in the power plant under the best combustion conditions,and accurately grasp the actual conditions of the performance of relevant equipment.
作者
黄思林
李德波
苗建杰
阙正斌
陈兆立
陈智豪
陈拓
冯永新
Huang Silin;Li Debo;Miao Jianjie;Que Zhengbin;Chen Zhaoli;Chen Zhihao;Chen Tuo;Feng Yongxin(National Energy Group Guangdong Electric Power Co.,Ltd,Guangzhou 510000,China;China Southern Power Grid Power Technology Co.,Ltd,Guangzhou 510080,China)
出处
《环境工程》
CAS
CSCD
北大核心
2023年第S02期812-818,共7页
Environmental Engineering
基金
中国南方电网公司重点项目(NYJS2020KJ005)
关键词
自然循环汽包锅炉
燃烧调整
优化
热效率
natural circulation drum boiler
combustion adjustment
optimization
thermal efficiency
