Research on 3 033-t/h Ultra-Supercritical Boiler Startup with no Circulating Pump

With the analysis of the pros and cons between the boiler startup with and without boiler water circulating pump for the 1 036-MW ultra-supercritical unit, and with the coordinated control of the boiler feed water flow, the temperature, the air flow, fuel and the starting speed during the startup process, the pump free startup is completed. The operating mode, procedures and critical control points for the boilerand the related considerations are proposed, which are practically valuable for the operators in the industry.