High-Temperature Molten Salt Pump for Concentrated Solar Power
The pump’s design and material selection fully account for material strength, corrosion, wear, heat resistance, thermal conductivity, cooling, and lubrication under conditions of high flow rate, high head, and elevated temperatures. Incorporating an innovative cavity design concept, a secondary convection air cooling structure, specialized heat-resistant components, and a reliable lubrication system, this pump series achieves enhanced efficiency, reliability, and performance while delivering superior energy savings.
Description
The pump’s design and material selection fully account for material strength, corrosion, wear, heat resistance, thermal conductivity, cooling, and lubrication under conditions of high flow rate, high head, and elevated temperatures. Incorporating an innovative cavity design concept, a secondary convection air cooling structure, specialized heat-resistant components, and a reliable lubrication system, this pump series achieves enhanced efficiency, reliability, and performance while delivering greater energy savings.
Our high-temperature molten salt pumps are suitable for: solar thermal power generation, nuclear power, molten salt thermal storage, waste heat recovery, alumina production, chlor-alkali (caustic soda flakes, granular caustic soda), benzene blending, isobutylene blending, acrylic acid, fluorochemicals, refrigerants, melamine (Tsinghua gas-phase quenching process, OTC high-pressure process, DSM polycyanamide units), and organic chemical industries for high-temperature medium transfer and heat exchange applications.
Our company possesses a complete production process encompassing 3D rapid scanning, 3D printing technology, alloy casting, machining, and high-temperature testing. Whether for experimental projects requiring compact pumps or large-scale engineering applications demanding heavy-duty units, we deliver molten salt pumps tailored to specific needs—operating at temperatures ≤300°C, ≤600°C, or ≤850°C. Our pumps feature lengths up to 18 meters and head capacities reaching 350 meters. We offer multiple materials for wetted components to withstand diverse high-temperature media, including nitrates, carbonates, fluorides, and more.
Structure and Performance
Flow Rate Q: 2–2000 m³/h
H：~400m
Design pressure P: ~5 MPa
Design temperature T: ~850°C
Scope of application
Molten Salt Energy Storage System
High-temperature molten salt pumps play a central role in the molten salt energy storage system of solar thermal power generation. As an efficient thermal energy storage medium, molten salt absorbs heat from solar collectors to raise its temperature and store thermal energy. High-temperature molten salt pumps transport molten salt from thermal salt tanks to steam generators, where it produces steam to drive turbines for electricity generation.
Hot Salt Pump: Transfers high-temperature molten salt from the hot salt tank to the steam generator, operating within a temperature range of 400°C to 565°C.
Temperature Control Pump: Achieves temperature regulation by mixing low-temperature molten salt with high-temperature molten salt, ensuring stable system operation.
System Preheating and Auxiliary Functions
Salt Drainage Pump: Used for preheating during system startup and transporting low-temperature molten salt to prevent system damage from sudden temperature changes.
Molten Salt Heating Pump: Utilizes renewable energy sources such as photovoltaic and wind power to heat molten salt, enabling energy storage.
Main Circulation Pump of CSP Plants
The high-temperature molten salt pump serves as the main circulation pump in CSP plants, responsible for transporting molten salt to heat exchangers to ensure continuous and stable system operation.
