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WhatsApp / Mob : +86 156 5177 2521
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e-mail : mrwin@cnbangwin.com
WhatsApp / Mob : +86 156 5177 2521
e-mail : mrwin@cnbangwin.com
PSA Nitrogen Generator – On-Site High Purity Nitrogen Production for Industries
Oct 13 , 2025Introduction
What Is a PSA Nitrogen Generator?
Working Principle
Key Features
Technical Specifications
Advantages
Industrial Applications
Frequently Asked Questions (FAQ)
Conclusion
PSA nitrogen generator is a type of gas separation equipment, which can generate high-purity nitrogen gas on site. Using pressure swing adsorption (PSA) technology, the system can provide a cost-effective and energy-saving nitrogen source for industries such as food packing, electronics, metallurgy, chemicals, aquaculture and many more.
It separates the nitrogen from the ambient air or compressed air with a high-purity nitrogen output. Therefore, there is no need to supply nitrogen gas in cylinders or cryogenic liquid nitrogen to your facility, and the system will help reduce the operating costs and increase the safety of the production process.
A PSA nitrogen generator (Pressure Swing Adsorption) is a device that produces nitrogen gas on-site with high purity by separating nitrogen from compressed air with a carbon molecular sieve (CMS).
Nitrogen passes through the CMS bed and is collected in the outlet, while oxygen and other impurities are adsorbed under pressure. The PSA nitrogen generator can produce nitrogen with purity up to 99.999% depending on the requirements.
l Air compressor and air treatment system
l PSA nitrogen generator unit (adsorption tower)
l Buffer tank and filtration system
l PLC automatic control panel
l Air compression & purification – Air compressor sucks ambient air and the air filters purify the compressed air from oil, dust, and water vapor.
l Adsorption phase – When the compressed air flows into the adsorption tower, the CMS adsorbs oxygen, CO₂, and moisture, and the rest of the nitrogen gas passes through and is collected.
l Desorption phase – The tank pressure is dropped and the adsorbed impurities are purged.
l Cyclic operation – Two adsorption towers are used that exchange the adsorption and regeneration phases, to continuously produce nitrogen gas.
l By using the cyclic pressure swing adsorption process, the PSA nitrogen generator can generate continuous, stable, high-purity nitrogen 24/7.
|
Parameter |
Specification |
|
Nitrogen Purity |
95% – 99.999% |
|
Capacity Range |
5 Nm³/h – 3000 Nm³/h |
|
Operating Pressure |
0.6 – 0.8 MPa |
|
Dew Point |
≤ -60°C |
|
Start-up Time |
≤ 15 minutes |
|
Control System |
PLC automatic control |
|
Power Supply |
220V / 380V / 440V |
|
CMS Service Life |
8 – 10 years |
l High nitrogen purity (95% – 99.999%)
l On-site nitrogen generation, no more cylinders needed
l Fully automatic PLC control system
l Low energy consumption and operating cost
l Compact modular design for easy installation
l Long service life of CMS and core components
l Low maintenance
l Nitrogen Purity: up to 99.999%
l Product Flow Rate: 20N-2500N / h
l Pressure: 0.3Mpa-0.6Mpa
l Inlet Air Temperature: 5℃~50℃
l Control System: PLC automatic control system
l Cost Saving – No more purchase or logistics cost of nitrogen cylinders.
l Stable Supply – 24/7 continuous nitrogen supply.
l High Purity – Can be customized for different nitrogen purity requirements.
l Safety – No need to store high-pressure nitrogen cylinders.
l Low Maintenance – Simple system with long service life.
l Energy Efficiency – Optimized PSA cycle with low power consumption.
l Customized System – Tailored capacity and nitrogen purity as per your requirement.
l Food & Beverage Industry: Modified atmosphere packaging (MAP) to prolong the food’s shelf life.
l Electronics & Semiconductor: Inert atmosphere used for soldering and assembly process.
l Metallurgy: Furnace blanketing or metal heat treatment.
l Petrochemical & Chemical Plants: Inerting and purging application.
l Aquaculture: Use oxygen-free nitrogen to reduce oxidation of the aquatic products.
l Pharmaceutical Industry: Use nitrogen protection to keep the medicine in storage and packaging.
Q1: What purity of nitrogen gas can be produced by a PSA nitrogen generator?
A1: Nitrogen purity can range from 95% to 99.999%, according to the system design.
Q2: How long does a PSA nitrogen generator take to start generating nitrogen gas?
A2: It takes about 10–15 minutes to start and give nitrogen output.
Q3: Can a PSA nitrogen generator run continuously?
A3: Yes, it can run 24/7 with little or no supervision.
Q4: In which industries, a PSA nitrogen generator is mostly used?
A4: PSA nitrogen generators are used for food packaging, electronics, chemical, metallurgy, aquaculture, pharmaceuticals and many more.
Q5: Can the capacity of a PSA nitrogen generator be customized?
A5: Yes, we can customize the flow rate and the purity of the nitrogen output as per your requirements.
PSA nitrogen generator is a great device to produce nitrogen gas directly at your factory with high purity and lower operating cost, as it is energy-efficient. The use of advanced PSA technology and fully automatic PLC control system, high purity nitrogen output, make PSA nitrogen generators a good alternative to traditional nitrogen cylinders or liquid nitrogen supply.
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