超(超)临界机组启动试运期间热力系统的净化

USC Unit Thermal System Cleaning during Startup Trial

超(超)临界机组具有高参数、滑压运行、快速启停和水汽品质要求高等特点,在机组启动试运期间需进行热力系统净化。介绍了超(超)临界机组热力系统净化的特点、机组启动前热力系统的冲洗、机组的首次整套启动和带负荷试运行,并结合热力系统净化方法对系统设计中存在的问题进行了阐述。

USC unit has many features, such as high specs, sliding pressure operation, fast startup and shutdown, and high steam quality, etc. During unit startup trial, the thermal system needs to be cleaned. This paper introduces characteristics of USC unit thermal system cleaning, thermal system flushing before startup, first system startup, and trial operation on load, and also discusses design problems based on thermal system cleaning methods.