大型纯凝火电机组抽汽供热改造后锅炉再热器出口蒸汽超温的应对改造策略

The Retrofit Strategy for Steam Over-temperature at the Outlet of Boiler Reheater After the Extraction Steam Heating Retrofit of a Large-scale Pure-condensing CoalFired Power Plant

针对纯凝火电机组抽汽供热改造后锅炉再热器系统超温问题,本文以国能(福州)热电有限公司锅炉再热器系统降温改造为例,介绍了项目改造背景,改造方案可行性论证,以及改造后效果分析,阐明了一种有效可行的可恢复的抽汽供热火电机组锅炉再热器超温改造策略。

In view of the overtemperature problem of the boiler reheater system after the transformation of the pure condensate thermal power unit's steam extraction and heating,this paper takes the cooling transformation of the boiler reheater system of the State Energy(Fuzhou)Thermoelectric Co.,Ltd.as an example to introduce the project transformation background,feasibility demonstration of the transformation scheme,and the analysis of the post-transformation effect.An effective,feasible and recoverable overtemperature renovation strategy for boiler reheater of steam extraction heating thermal power unit is expounded.