Abstract: In this paper the design features of the starting system of 600MW supercritical boiler with boiler circulating pump were introduced, the related advantages and disadvantages in the design were pointing out. A design reformation method was proposed, in which the boiler circulating pump was eliminated and the feedwater heat regenerative was used to recovery heat and working medium,the initial investment and maintenance cost were decreased due to the reformation.

Key words: super-critical once-through boiler, start system, feedwater heat regenerative