锅炉技术2024，Vol.55Issue(4)：13-20,8.
基于CFD的燃煤锅炉末级过热器壁温分布特性研究
Study on Tube Metal Temperature Distribution Characteristics of Final Superheater of Coal-Fired Boiler Based on CFD
朱笔文 1司风琪 1董云山2
作者信息
- 1. 东南大学 能源热转换及其过程测控教育部重点实验室,江苏 南京 210096
- 2. 江苏科技大学 能源与动力学院,江苏 镇江 212000
- 折叠
摘要
Abstract
In order to solve the problem that the high-temperature heating surface in a coal-fired boiler is prone to overtemperature and tube explosion accidents,the influence of the flue gas side and the steam side on the tube metal temperature of the heating surface are comprehensively considered.Based on the numerical simulation method,the combustion process of the pulverized coal flow in the furnace is simplified and the coupled gas and steam heat transfer model in the furnace is constructed,which realizes the rapid calculation of the tube metal temperature of the final superheater.On this basis,the characteristics of tube metal temperature distribution and the variation of peak metal temperature position under different working conditions are investigated.Results show that the metal temperature distribution of the final superheater along the way is basically bimodal due to the coupling of flue gas outside the tube and steam inside the tube.With the increase in load,the difference of the metal temperature distribution curves along the way of different pipe panels in the flue gas duct become smaller,and the peak positions of the metal temperature on both sides of the flue gas duct shift downard to different degrees.关键词
燃煤锅炉/数值模拟/高温受热面/壁温计算Key words
coal-fired boiler/numerical simulation/high-temperature heating surface/tube metal temperature calculation分类
能源与动力引用本文复制引用
朱笔文,司风琪,董云山..基于CFD的燃煤锅炉末级过热器壁温分布特性研究[J].锅炉技术,2024,55(4):13-20,8.
