Liquid Nitrogen Plants by China Suppliers - Modular Design, High Purity, Efficient Factory Solutions
LN₂ Outlet Temperature
≤-193 ℃
Overall Power Consumption
≤0.35 kWh/L
Liquefaction Efficiency
≥80%
| Parameter | Value | Remark |
|---|---|---|
| Liquefaction Feed Gas | High-purity N₂ (≥99.5%) | Directly from PSA unit |
| Refrigeration Method | Joule-Thomson expansion cycle | No external refrigerant |
| LN₂ Tank Volume | 5–100 m³ (customizable) | Vacuum multi-layer insulation |
| LN₂ Tank Working Pressure | ≤0.8 MPa | |
| Daily Evaporation Rate | ≤0.3% | Per GB/T 18443 |
| LN₂ Outlet Temperature | ≤-193 ℃ | |
| Cold Start-up Time | ≤4 h (first cold-down) | |
| Liquefaction Efficiency | ≥80% (liquefied / feed) | |
| Overall Power Consumption | ≤0.35 kWh/L (liquid N₂) | Includes N₂ gen. + liquefaction |
Frequently Asked Questions (FAQ)
Q: What are the feed gas requirements for the nitrogen liquefier?
The system requires high-purity nitrogen feed gas (purity level ≥99.5%), which can be supplied directly from a Pressure Swing Adsorption (PSA) unit.
Q: Does the system require external refrigerants?
No, the system utilizes a Joule-Thomson expansion cycle for refrigeration, which operates efficiently without requiring any external refrigerant.
Q: What is the storage capacity and insulation type of the LN₂ tank?
The liquid nitrogen tank has a customizable volume capacity ranging from 5 to 100 m³ and features advanced vacuum multi-layer insulation to minimize heat transfer.
Q: What is the overall power consumption of the liquefaction process?
The overall power consumption is ≤0.35 kWh per liter of liquid N₂. This energy consumption rate includes both the nitrogen generation and the liquefaction process.
Q: How long does the initial cold start-up take?
The first cold-down start-up time of the system is highly efficient, requiring ≤4 hours to reach full operational temperature.
Q: What is the daily evaporation rate and working pressure of the tank?
The LN₂ storage tank operates under a working pressure of ≤0.8 MPa, maintaining a daily evaporation rate of ≤0.3% in compliance with GB/T 18443 standards.
