国产600MW超临界机组直流锅炉启动系统

Start-up System of a Chinese-made 600 MW Supercritical Once-through Boiler

上海锅炉厂有限公司首次引进美国ALSTOM公司技术生产 6 0 0MW超临界直流锅炉 ,超临界锅炉与亚临界锅炉在启动过程中有很大区别 ,超临界锅炉在国内的现有运行机组中为数不多 ,且大多数采用的是外置式汽水分离器。本文通过对该直流锅炉启动系统的结构特点的简要介绍 ,阐述了6 0 0MW锅炉启动系统的工作过程 ,分析了锅炉启动系统中工况疏水的调整原则 。

Shanghai Boiler Co. Ltd. in China has for the first time imported the manufacturing technology of 600 MW supercritical once-through boilers from Alstom Co. of USA. A major difference exists between the start-up process of a supercritical boiler and that of a subcritical one. There are a few supercritical boilers presently in operation in China and in the majority of cases external steam-water separators are used. Through a brief account of the construction features of a once-through boiler start-up system the author has analyzed the adjustment principle of drainage employed in the boiler start-up system. This can serve as a guide and resource of useful information for other analogous units.