Study of flue-gas temperature difference in supercritical once-through boiler

International Conference on Energy Engineering and Environmental Protection 2017

能源学;生态环境科学

Kang, Yanchang^1 ; Li, Bing^1 ; Song, Ang^1

Shandong Branch of Huadian Electric Power Research Institute, Jinan

250014, China^1

关键词: Combustion condition;    Flue gas temperatures;    Heating surfaces;    Internal combustion;    Once-through boilers;    Secondary air;    Supercritical once-through boilers;    Temperature variation;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/121/5/052026/pdf
DOI  :  10.1088/1755-1315/121/5/052026

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The 600 MW coal-fired once-through Boilers with opposed firing at a power plant are found to experience marked temperature variation and even overtemperature on the wall of the heating surface as a result of flue-gas temperature (FGT) variation in the boiler. In this study, operational adjustments were made to the pulverizing, combustion, and secondary air box systems in these boilers, in order to solve problems in internal combustion. The adjustments were found to reduce FGT difference and optimize the boiler' combustion conditions. The results of this study can provide a reference for optimization of coal-fired boiler of the same type in similar conditions.