The Liquid Oriented ASU is designed specifically for the production of Liquid Oxygen (LOX), Liquid Nitrogen (LIN), and Liquid Argon (LAR). Its main features include:

-High proportion of liquid products: liquefaction rate can reach 80%~100% (traditional air separation liquid products only account for 10%~30%)
-Flexible supply mode: supports tanker transportation, terminal vaporization, or direct liquid use
-Typical product specifications:
-Capacity: customized
-Liquid oxygen: purity ≥ 99.6%, pressure 0.8~1.2MPa (saturated liquid)
-Liquid argon: purity ≥ 99.999%, oxygen content ≤ 1ppm
-Liquid nitrogen: purity ≥ 99.999%, oxygen content ≤ 2ppm

Key points of the process flow

 Deep liquefaction technology
-Double expansion refrigeration cycle:
-The first stage expansion machine (air side) provides basic cooling capacity
-Secondary nitrogen/helium expander (closed cycle) achieves deep cooling at -196 ℃
-Liquid oxygen subcooling design: using liquid nitrogen refrigerant to cool LOX to below -210 ℃, reducing storage flash loss

Energy consumption and economy

-Unit liquid energy consumption:
-Liquid oxygen: 0.9~1.2 kWh/Nm ³ (30%~50% higher than gaseous air separation)
-Liquid argon: 1.5~2.0 kWh/Nm ³ (including purification energy consumption)
-Cost advantage scenario:
-Remote areas without pipeline transportation conditions
-Need to cope with the peak shaving demand of gas consumption fluctuations
-High end liquid markets such as electronics and medical

Typical application cases

-Semiconductor industry:
-Provide 99.9999% electronic grade liquid argon for single crystal silicon growth protection
-Aerospace fuel:
-Liquid oxygen (-183 ℃) as rocket oxidizer, purity ≥ 99.995%
-Cold chain logistics:
-Liquid nitrogen quick freezing (-196 ℃) for seafood/pharmaceutical cold chain