300 MW 锅炉过热器喷水减温器系统的改进

The Improvement of a Water Spray Desuperheater System for a 300 MW Boiler Superheater

通过对国内现行引进型３００ＭＷ锅炉机组喷水减温器系统分析，并结合国内的运行经验，提出了过热器喷水减温系统采用二级四点系统。二级喷水点由后屏后移到后屏前及后屏过热器出口至末级过热器入口间的连接管取消交叉改为直接连接方式的设计。

Based on the analysis of a water spray desuperheater system for a home made modified 300 MW boiler unit and in connection with its operating experience within China the authors have come up with a spray water desuperheating system,which employs a two stage four point system.The two stage water spray point is transferred from behind the rear panel to the front of the rear panel with the interconnecting pipe from the rear panel superheater outlet to the last stage superheater inlet assuming a direct connection mode instead of a intersecting one.