Cryogenic centrifugal pumpis a specialized rotary pump designed to handle ultra-low-temperature liquids (typically below -150°C), such as LNG, liquid nitrogen, Liquid Argon, or oxygen. It uses centrifugal force to move fluids efficiently while maintaining structural integrity in extreme cold.
Cryogenic Materials: Stainless steel (e.g., 304/316) or aluminum alloys resistant to thermal contraction.
Advanced Sealing: Labyrinth Sealing, around 8000 hours service life
Thermal Insulation: Vacuum-jacketed casing or multilayer insulation to minimize heat ingress.
Vertical/Horizontal Design: Compact for space-constrained installations.
Application
1. LNG Industry
LNG loading/unloading terminals, regasification plants, and bunkering systems.
2. Industrial Gases
Transfer of liquid nitrogen, oxygen, argon, and CO₂ in air separation units (ASUS).
Advantages
High Efficiency
Optimized impeller design reduces energy consumption (e.g., 20–30% lower than reciprocating pumps).
Reliability in Extreme Conditions
Robust construction prevents embrittlement and thermal stress cracks.
Low Maintenance
Fewer moving parts than piston pumps; dry gas seals extend service life.
Scalability
Flow rates from 5 m³/h to 500 m³/h, pressures up to 800 bar for diverse needs.
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