Based on a 600 MW supercritical pure condensing unit

the optimization design of industrial steam extraction is completed. Through the contrast analysis

at variable load conditions

the cold reheat steam extraction combined with temperature and pressure reducer is the optimal solution. Combining the economic analysis of engineering transformation

the annual coal consumption can be decreased by 1.86 g/k Wh under 50% THA operating condition.Meanwhile

the annual income is up to 35.025 million yuan by 2021

investment recovery period is far less than a year. The project has significant economic and social benefits.