Abstract:

The supercritical and ultra-supercritical electric generating sets have been the main ones in the last ten years in China.Corrosion and scaling problems occur in the supercritical and ultra-supercritical sets during their running time,which are different from what occurred in sub-critical set equipment.The situation of the corrosion,scaling and salification on steam turbine blades occurred during the running of supercritical sets in Hubei Province,China,are introduced.The reasons which resulted in this situation are analyzed and discussed,and countermeasures and solutions are brought forward.

Key words: supercritical unit, corrosion, scaling working, condition of water treatment

摘要：

超临界及超超临界发电机组近十几年成为我国主力发电机组,超临界及超超临界机组设备在运行中出现了与亚临界机组设备不同的腐蚀结垢问题。笔者介绍了湖北省超临界发电机组在运行中产生的腐蚀、结垢及汽轮机叶片的积盐情况,并对该情况产生的原因进行了分析和探讨,并提出了对策和解决措施。

关键词: 超临界, 腐蚀, 结垢, 积盐, 水处理工况

CLC Number: 

• TG17