↓High purity PSA nitrate generator
Nitrogen Gas Generator “NSP Type”
Utilizing PSA (Pressure Swing Adsorption) Technology
What is PSA?
PSA (Pressure Swing Adsorption) is a technology that separates oxygen and nitrogen from air using an adsorbent material. The NSP series employs Molecular Sieve Carbon (MSC) as the adsorbent.
Features of MSC
MSC has ultra-fine pores (0.30–0.40 nm) and exploits the slight molecular size difference between oxygen (0.28 nm) and nitrogen (0.30 nm) for separation.
- Precisely controlled pore diameter
- Spherical particles ranging from 1–20 μm (confirmed via SEM)
- Designed based on adsorption modeling
Development Concept of the NSP Series
- Superior Energy Efficiency
- Achieves high performance even with low airflow, compatible with domestic compressors
- Improved PSA operation method (MB-PT) enables high-purity nitrogen generation up to 99.999%
- Reduces running costs (approx. ¥1.17 million saved annually, 50 tons less CO₂ emissions)
- Space-Saving and Flexible Installation
- Compact and lightweight design inherited from the S-type
- Freely installable in various spaces
- Enhanced Durability
- Strengthened filters and activated carbon chambers (double the volume)
- Pre-treatment life extended from 4,000 to 6,000 hours
- High-durability valve (B-manufacturer, lifespan increased by 1.5x)
Features of the New MSC “MG4”
Compared to conventional materials, particle size is uniformly reduced to 1.5 μm (previously ~20 μm), significantly improving adsorption efficiency and structural strength. Enables effective use of pellet interior.
Conventional MSC material is large and uneven in size, averaging 20 microns
New MG4 material is small and uniform in size, 20 microns → 1.5 microns
Reference other companies
| Comparison Item | Conventional MSC (MG7LS) | New MSC (MG4) |
| Particle Size | ~20 μm (non-uniform) | 1.5 μm (uniform) |
| Particle Void Space | Irregular | Uniform, better flow |
| Compression Strength | Lower | Higher |
Evolved PSA Operation: MB-PT Technology
Developed by AWI Laboratory and licensed under APCI patent. Introducing a pressure equalizing line from the middle to the inlet of the adsorption tower achieves:
- Improved efficiency for high-purity nitrogen (99.9%+)
- Significant performance gain in the ultra-high purity range (99.999%)
- Expansion into fields like semiconductors, heat treatment, and laser applications
Real-World Performance: KN4-20NSP
| Item | Specification | Remarks |
| Nitrogen Output | 20 Nm³/h or higher | Higher than conventional 15 Nm³/h |
| Nitrogen Purity | Up to 99.999% | Thanks to MB-PT technology |
| Noise Level | 68 dB(A) | Reduced from 75 dB(A) |
| Power Cost | ¥2.34 million/year | Previously ¥3.51 million/year |
| CO₂ Emissions | ~100 tons/year | 50 tons less than before |
| Unit Size | Compact structure | Easy installation anywhere |
Performance Comparison: NSP vs Conventional SP Units
| Model | Power (kW) | Output (Nm³/h) | Noise (dB) | Annual Power Cost | CO₂ Emission |
| KN4-15SP (Legacy) | 11 kW | 15 | 75 dB | ¥3.51 million | ~150 tons |
| KN4-20NSP (New) | 11 kW | 20 or more | 68 dB | ¥2.34 million | ~100 tons |
Additional Highlights
- Integrated activated carbon tank (no external projections)
- Special dual filter design
- Improved adsorbent durability and reduced powdering
- Stable operation with optimized air inlet flow speed
- Inverter not required (suction +10°C compatible)
The “NSP Type” nitrogen generator offers unmatched energy efficiency, high purity, superior durability, and space-saving design, compatible with domestic compressors and ideal for a wide range of industrial applications.