大尺寸四角切圆燃烧锅炉汽温偏差原因分析及措施

An Analysis of the Cause Leading to Steam Temperature Deviation in a Large-sized Tangentially Fired Boiler and Measures Taken for Its Alleviation

通过对锅炉热力特性试验和热力计算的全面比较 ,并对其进行分析研究 ,把通常设计在后屏至末级的连接管由交叉形式改为平行方式 ,实际运行表明 :其改动是成功的 ,效果显著。

A comprehensive comparison was conducted of the results of the thermodynamic testing of a boiler with those of the boiler thermodynamic calculation followed by a pertinent analytic study. On this basis the pipe connecting a rear panel to the last row of a tube bank was changed from a cross-connected form to a parallel-connected one. Ensuing operation of the modified boiler indicates that such a modification has been highly successful.