1000MW超超临界压力直流锅炉再热蒸汽温度波动大的分析与改进

Analysis of fluctuation of reheated steam temperature for 1 000 MW ultra-supercritical pressure once-through boilers and related retrofit

针对华能玉环电厂1000 MW超超临界直流锅炉在加负荷时再热蒸汽温度波动大的现象,阐述了一种具有创新性的再热器减温水系统的改造方案,并分析其特点。经过近一年的运行实践,证明此改造方案非常成功,可为超超临界压力直流锅炉再热器减温水系统的设计与选型以及锅炉再热器减温水系统的改造提供有益的参考。

To deal with the large fluctuation of the reheated steam temperature for 1 000 MW uhra-supercritical pressure once-through boilers of Huaneng Yuhuan Power Plant, a retrofit scheme for the desuperheating water system was proposed. One year of operation after the retrofit proved the scheme successful.