某电厂350 MW超临界锅炉燃烧优化调整试验研究  

Experimental study on combustion optimization and adjustment of 350 MW supercritical boiler in a power plant

作　　者：郭艳平 GUO Yan-ping

机构地区：[1]中国大唐集团科学技术研究总院有限公司华北电力试验研究院,北京100040

出　　处：《节能》2023年第2期57-61,共5页Energy Conservation

摘　　要：以某电厂350 MW超临界机组锅炉为例进行燃烧优化调整试验。结果表明:制粉系统调整试验、二次风不同配风方式调整、最佳氧量调整试验等对锅炉受热面的壁温超限、汽温偏差、锅炉经济运行存在较大的影响。调整后磨煤机出口各粉管风速偏差均小于±5%,各台磨煤粉细度R90均调整在合理范围内,飞灰可燃物含量明显降低,锅炉效率明显提高,消除了高温再热器出口两侧汽温偏差大的问题。Taking a 350 MW supercritical unit boiler as an example,the optimized combustion adjustment test is carried out.The results show that the adjustment test of pulverizing system,the adjustment test of different air distribution modes of secondary air and the adjustment test of optimal oxygen have great influence on the wall temperature exceeding limit,steam temperature deviation and boiler economic operation.After the adjustment,the wind speed deviation of each pulverized tube at the exit of coal mill is less than±5%,and the fineness R90of each pulverized coal mill is adjusted within a reasonable range.The combustible content of fly ash is obviously reduced,the boiler efficiency is obviously improved,and the problem of large steam temperature deviation at both sides of the outlet of high temperature reheater is eliminated.

关 键 词：超临界锅炉 四角切圆 汽温偏差大 燃烧调整 

分 类 号：TM621[电气工程—电力系统及自动化]