Industrial Cryogenic Liquid Nitrogen Generator
Industrial cryogenic liquid nitrogen generator is a core air separation equipment based on the principle of low temperature distillation. It uses -196℃ cryogenic technology to separate and purify the air, and continuously and stably produce high-purity liquid nitrogen. This system can be operated in parallel with oxygen-making equipment to achieve co-production of oxygen and nitrogen, and is a key infrastructure in the semiconductor, medical and food processing industries.
Core technical parameters
1. Flow Rate Specifications
|
Parameter |
Standard Model Range |
Customizable Extension |
|
Base Flow Rate |
100~5,000 L/h |
Up to 20,000 L/h |
|
Peak Flow Rate |
120% rated flow |
150% rated flow* |
|
Flow Adjustment Ratio |
30%~100% stepless regulation |
10%~120% regulation |
*Note: Requires configuration with high-pressure liquid nitrogen pump set
2. Purity level
Standard grade: 99.999% (O₂≤5ppm, H₂O≤1ppm)
Ultra-high purity: 99.9999% (need to install a terminal purifier)
Special customization: can meet the MIL-STD-883J military standard
3. Pressure System Specifications
|
Pressure Type |
Standard Configuration |
High-Pressure Custom Version |
|
Distillation Column Operating Pressure |
0.55~0.65 MPa |
1.2~1.8 MPa |
|
Liquid Nitrogen Delivery Pressure |
0.3~0.8 MPa |
Up to 3.5 MPa |
|
Storage Tank Maintenance Pressure |
15~25 kPa |
50~100 kPa |
System composition
1. Air pretreatment module
- Three-stage filtration system (PM1.0→PM0.1→activated carbon)
- Double tower molecular sieve purifier (dew point ≤-73℃)
2. Low temperature core components
- Main heat exchanger: aluminum plate fin type (△P≤12kPa)
- Distillation tower system:
①High pressure tower: regular packing tower (HETP ≤15cm)
②Low pressure tower: screening tower (tower efficiency ≥88%)
3. Refrigeration unit
- Turbo Expander (isentropic efficiency ≥85%)
- Low temperature liquid nitrogen pump (highest head 400m)
Energy Efficiency & Operational Specifications
|
Parameter |
Performance Specification |
|
Specific Energy Consumption |
0.75~1.05 kWh/Nm³ (@99.999% purity) |
|
Cold Start-up Time |
≤6 hours (from ambient temperature) |
|
Continuous Operation Cycle |
≥3 years (recommended maintenance interval) |
|
Noise Level |
≤72 dB(A) @1m distance |
Typical application configuration cases
Case 1: Semiconductor Industry
Model: CryoLIN-2000UHP
Flow rate: 2,000 L/h (-196℃)
Purity: 99.9999% (particulate matter ≤Class 1)
Special Requirements:
- 316L stainless steel pipe system
- Online particulate matter monitor
- Fully welded structure of VCR joints
Case 2: Food Quick Frozen Line
Model: CryoLIN-8000FC
Traffic: 8,000 L/h
Working mode: pulse jet liquid supply
Featured functions:
- Explosion-proof electronic control system (ATEX certification)
- Automatic filling metering device
Service Commitment
Our industrial cryogenic liquid nitrogen generator is guaranteed by:
- 7×24-hour remote monitoring support
- 10-year warranty for key components (expander/main heat exchanger)
- Provide liquid nitrogen production guarantee agreement (output ±3%)
To obtain customized solutions for your industry, our Shenger Gas engineering team can provide:
① On-site working condition analysis report
② 3D layout design plan
③ Full life cycle cost calculation
About us
Zhejiang Shenger Gas Equipment Mlanufacturing Co., Ltd. was established in 2010, which is specialized in manufacturing PSA Oxygen Plant, PSA Nitrogen plant, Cryogenic air separation equipment, VPSA oxygen plant etc. The factory covers an area of 16,000 square meters, with a construction area of 10,000 square meters and an annual outputvalue of more than 80 milion yuan. lt is located in beautiful Hangzhou City, and is a private technology enterprise inZhejiang Province.
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