High Purity PSA Nitrogen Generator for Food Packaging
A PSA nitrogen generator (also known as a nitrogen making machine) is an advanced gas separation system based on pressure swing adsorption nitrogen generation technology. Using high-performance carbon molecular sieve (CMS), it selectively adsorbs oxygen, moisture, and impurities from atmospheric air to produce ultra-pure nitrogen on demand.
Specifically engineered for food packaging, this High Purity 99.999% N2 Generator delivers nitrogen with oxygen content as low as 50ppm, effectively inhibiting microbial growth and oxidation in packaged foods. As a core solution for onsite nitrogen generation, it eliminates contamination risks and logistical hassles associated with traditional cylinder or liquid nitrogen supply, ensuring food safety from production to shelf.
This energy-saving nitrogen generator optimizes adsorption-desorption cycles through intelligent control, reducing energy consumption by 20-30% compared to conventional systems. Its compact design integrates seamlessly with food packaging lines, making it a preferred choice for food manufacturers worldwide.
Core Technical Parameters
| Capacity (Nm³/h) |
Purity (%) |
Length (mm) |
Width (mm) |
Height (mm) |
Weight (kg) |
Inlet Size (DN) |
Outlet Size (DN) |
| 5 | 99 | 1000 | 1000 | 1640 | 380 | DN15 | DN15 |
| 99.9 | 1000 | 1000 | 1640 | 380 | DN15 | DN15 |
| 99.99 | 1300 | 1100 | 1400 | 560 | DN15 | DN15 |
| 99.999 | 1300 | 1100 | 1400 | 560 | DN15 | DN15 |
| 20 | 99 | 1450 | 1300 | 1450 | 700 | DN20 | DN15 |
| 99.9 | 1500 | 1400 | 2030 | 900 | DN25 | DN20 |
| 99.99 | 1500 | 1500 | 1700 | 1000 | DN25 | DN15 |
| 99.999 | 1600 | 1450 | 1950 | 1400 | DN25 | DN15 |
| 50 | 99 | 1600 | 1400 | 2100 | 1100 | DN25 | DN20 |
| 99.9 | 1700 | 1500 | 2100 | 1300 | DN25 | DN15 |
| 99.99 | 1700 | 1550 | 2160 | 1500 | DN40 | DN25 |
| 99.999 | 2000 | 1800 | 2500 | 2300 | DN40 | DN40 |
| 100 | 99 | 1600 | 900 | 2230 | 1050 | DN40 | DN50 |
| 99.9 | 1800 | 1750 | 2250 | 1400 | DN40 | DN25 |
| 99.99 | 2100 | 1950 | 2250 | 2700 | DN40 | DN40 |
| 99.999 | 2200 | 1300 | 2900 | 3300 | DN65 | DN40 |
| 150 | 99 | 1800 | 1150 | 2200 | 1400 | DN40 | DN25 |
| 99.9 | 2100 | 1200 | 2250 | 2200 | DN40 | DN40 |
| 99.99 | 2200 | 1300 | 2700 | 3200 | DN50 | DN40 |
| 99.999 | 2200 | 1500 | 3100 | 4400 | DN80 | DN50 |
| 200 | 99 | 2000 | 1150 | 2300 | 1700 | DN40 | DN25 |
| 99.9 | 2100 | 1200 | 2500 | 2200 | DN40 | DN50 |
| 99.99 | 2200 | 1400 | 2850 | 4100 | DN65 | DN50 |
| 99.999 | 2200 | 1500 | 3000 | 4100 | DN65 | DN50 |
| 300 | 99 | 2200 | 1250 | 2620 | 2500 | 50 | 40 |
| 99.9 | 2100 | 1200 | 2500 | 2240 | 50 | 40 |
| 99.99 | 2200 | 1500 | 3400 | 4200 | 80 | 50 |
| 99.999 | 2200 | 1500 | 3400 | 4260 | 80 | 80 |
| 400 | 99 | 2200 | 1300 | 2900 | 3350 | 65 | 40 |
| 99.9 | 2200 | 1500 | 3050 | 4200 | 65 | 50 |
| 99.99 | 2200 | 1500 | 3400 | 4300 | 80 | 80 |
| 500 | 99 | 2200 | 1400 | 2850 | 4100 | 65 | 50 |
| 99.9 | 2200 | 1500 | 3400 | 4200 | 80 | 50 |
| 99.99 | 2200 | 1500 | 3400 | 4200 | 80 | 80 |
| 800 | 99 | 2200 | 1500 | 3400 | 4300 | 80 | 80 |
| 99.9 | 2200 | 1500 | 3400 | 4200 | 80 | 80 |
| 1200 | 99 | 2200 | 1500 | 3400 | 4300 | 80 | 80 |
PSA vs. VPSA Technology: Why Food Packaging Prefers PSA Nitrogen Generators
While both PSA nitrogen generator and VPSA (Vacuum Pressure Swing Adsorption) technology produce high-purity nitrogen, PSA is far more suitable for food packaging applications. PSA systems operate at medium pressure (0.2-0.8MPa) and are designed for medium flow rates (5-80Nm³/h), which aligns with the needs of most food packaging lines.
Their compact adsorption towers and fast cycle times (60-120 seconds) enable integration into tight factory layouts, even alongside existing packaging equipment. VPSA technology, by contrast, is optimized for large flow rates (>100Nm³/h) and operates at near-atmospheric pressure, requiring larger equipment and higher energy consumption for vacuum pumps—making it impractical for food packaging facilities with limited space or variable production demands.
Additionally, PSA systems have shorter startup times (5-10 minutes) and lower maintenance requirements, ensuring continuous operation for 24/7 food production. For food manufacturers, the High-efficiency PSA Nitrogen Generator offers the perfect balance of purity, efficiency, and flexibility, adapting seamlessly to different packaging processes (MAP, vacuum flushing, pillow packing).
Food-Grade Compliance: Certifications & Material Requirements
Food packaging applications demand strict compliance with global food safety standards. Reputable PSA nitrogen plant manufacturers produce food-grade models with contact parts made of 304/316 stainless steel, which is corrosion-resistant, non-toxic, and compliant with FDA (US) and EC 1935/2004 (EU) regulations.
The CMS used must be food-safe (non-toxic, odorless) and free of harmful additives, ensuring no contamination of the nitrogen or packaged food. Additionally, the generator must hold key certifications: ISO 22000 (food safety management system), HACCP (hazard analysis and critical control points), and CE/FDA approvals for global markets.
Many manufacturers also offer customizations to enhance compliance, such as aseptic filters (0.01μm) for nitrogen purification, stainless steel pipelines, and easy-to-clean surfaces that prevent dust and debris accumulation—essential for maintaining hygiene in food packaging facilities.
Future Trends in PSA Nitrogen Generators for Food Packaging
The food packaging industry's focus on safety, sustainability, and automation is driving innovation in Nitrogen Gas Generation Equipment. Key trends include:
- Smart Integration: IoT-enabled PLC systems allow remote monitoring, predictive maintenance, and data analytics via cloud platforms
- Higher Purity Precision: Advances in CMS technology will enable more precise control of nitrogen purity
- Compact Modular Designs: Modular nitrogen generator models allow small food enterprises to start with basic systems and expand capacity
- Eco-Friendly Materials: Use of recyclable CMS and biodegradable seals will enhance sustainability
- Dual-Function Systems: Generators will integrate nitrogen and carbon dioxide production for greater flexibility
Conclusion
The 99.999% High Purity PSA Nitrogen Generator is an indispensable nitrogen making machine for food packaging, combining ultra-pure output, food safety compliance, energy efficiency, and cost savings. Its onsite nitrogen generation capability eliminates the risks and costs of traditional supply methods.
Whether for snack packaging, fresh produce, or processed meats, this PSA nitrogen plant delivers consistent, high-quality nitrogen that extends shelf life, maintains product integrity, and ensures compliance with global food safety standards.
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