A boiler feed pump with the largest drive rating worldwide was dispatched by the KSB Group based in Frankenthal in late December 2019. It will be used in the coal-fired power plant Pingshan II that is currently being built in Huaibei, China. The supercritical power station employs a new technology that is said to reach an efficiency of almost 50 percent at a unit output of 1350 megawatts.

The developers designed the CHTD 11 boiler feed pump specially for a maximum inlet temperature of 270 °C and a maximum pressure of 520 bar. Two steam turbines drive the pump set. When the pump takes up operation it will reach an efficiency in excess of 88 percent, which is a significant increase compared with previous models.

Two booster pumps of the type YNK, also made in Frankenthal, supply the boiler feed pump with the required inlet pressure. At the KSB site in Shanghai, baseplates, couplings and gear units will be fitted to complete the pump sets.

In addition to the pump package the manufacturer will also supply the valves for the piping of pumps and steam boilers. Commissioning of the power station is projected for 2021.

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CHTD 11/5 boiler feed pump with the world’s highest drive rating at present. Source: KSB SE & Co. KGaA