It is used to drive high-power pump equipment, including boiler feedwater pumps, heating network circulating pumps, and circulating water pumps involved in chemical processes.

Steam Turbine-driven Heat Network Circulation Pump Project for Heat Supply Primary Station

This case is applied to a residential area heating project. As the core equipment for delivering heating medium in the heat supply primary station, the circulation pump features high power (1MW per unit). To ensure high efficiency and stable operation, the primary station adopts small-sized driving steam turbines to directly drive the heat network circulation pumps, replacing the traditional electric drive mode. These small turbines utilize high-pressure steam (parameters: 210°C, 1.0MPa) supplied by power plants or other steam sources as the working medium to form a thermal cycle, thereby reducing power conversion losses.

Operating income

Improved Energy Efficiency: Compared with electric drive, the steam turbine drive mode boosts efficiency by 10–15%. It saves approximately 2.88 million kWh of auxiliary power annually, equivalent to a reduction of 864 tons of standard coal consumption, generating direct economic benefits of about 5 million yuan (based on the on-site electricity price of 0.5 yuan/kWh).

Enhanced Operational Stability: The system reduces reliance on auxiliary transformers, eliminates the risk of unit tripping caused by voltage sag, and improves the unit availability rate.

Economic & Environmental Benefits: It achieves an annual reduction of approximately 2,160 tons of carbon dioxide emissions. The exhaust steam from the turbines is directly fed into heat exchangers, further improving the comprehensive energy utilization efficiency of the power plant.