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PSA Nitrogen Generator

GEN2 i4.0 PSA
Nitrogen gas generators


          

Nitrogen is used in many commercial and industrial applications to improve the quality of a product or process or as a safety measure to prevent combustion. Liquid or bottled nitrogen delivery and storage can be expensive, unreliable and a safety concern. Nitrogen gas generators allow users to produce nitrogen in-house simply and inexpensively using an existing compressed air system.
 
nano recognizes the importance of having a safe, reliable and cost-effective supply of high-purity nitrogen.  We have developed the GEN2 i4.0 PSA nitrogen gas generator to meet the increasing demand for high quality complete packaged solutions which save energy and time while fulfilling the needs of their intended application.  GEN2 i4.0 nitrogen gas generators have a typical ROI payback of less than 24 months.
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A few of the many industries making the switch to nano GEN2 i4.0 PSA nitrogen gas generators include:

  • food (MAP)
  • beverage (bottling)
  • plastics (PET)
  • pharmaceutical (product transfer)
  • chemicals (blanketing)
  • laser metal cutting (burring reduction)
  • fire prevention (eliminating combustion)
  • electronics (wave soldering)

NITROGEN GENERATORS


         

Nitrogen is all around us. It is one of the most plentiful elements in our galaxy and accounts for 78% of the atmospheric air that we breathe. On site nitrogen gas generators simply separate and concentrate the nitrogen molecules in the air, while disposing of the oxygen and trace gases. The delivery process is on-demand, meaning you can generate as much or as little nitrogen gas as you require at any given time. Each application and industry will require varying nitrogen concentration levels, referred to as purity. The ability to control the purity, along with pressure and volume, is what drives such a rapid payback and exceptional ROI.

When evaluating technology options, it is crucial to understand how the system configuration, technology types and equipment design factors will impact the capital purchase price and operating costs of the system. A well-aligned technology and application synergy will tremendously reduce nitrogen expenses and ultimately contribute to the profitability of a business. Ineffective system design and misapplied technology can unnecessarily increase the capital cost of a system and also the cost of ownership by up to 800%.  When evaluating nitrogen gas generation for any application, it is critical to consult with a team who can quantify the impact of the technology selection and system design.

WHAT TO CONSIDER WHEN EVALUATING TECHNOLOGY OPTIONS

* Nitrogen Flow             * Operating Costs
* Nitrogen Pressure * Air to Nitrogen Ratio
* Nitrogen Purity         * Accessible Electricity
* System Expandability * Energy Saving Controls
* System Dimensions * Carbon Footprint
* System Efficiency * Warranty
* System Redundancy * CRN/CSA/ASME

On site nitrogen gas generation can be achieved through pressure swing adsorption (PSA), or membrane separation technology.  The selection of which technology to apply will vary by industry and is highly dependent on how the nitrogen gas is being used.  Our design engineering process delivers the lowest cost of operation today, while allowing for future system expansion without compromising efficiency.


PRESSURE SWING ADSORPTION (PSA)


              
PSA is a process in which compressed air is passed through a bed of carbon molecular sieve (CMS), which is stored in multiple chambers, side by side. The CMS is an adsorbent material designed to capture the oxygen and trace gas molecules in its pores, while allowing the larger nitrogen molecule to flow past the CMS and out of the nitrogen generator for process use.

The PSA nitrogen generator is a self-regenerating system, meaning it cleanses itself of waste gas impurities without human interaction. The nitrogen generator is divided into two chambers: side A and side B.  These chambers will work in tandem to separate the gases, regenerate the spent CMS and equalize system pressure. While chamber A of the nitrogen generator is online, actively separating the nitrogen from air, chamber B is offline in regeneration mode, preparing for gas adsorption duty.  The chambers will continuously alternate gas separation and regeneration duties, providing a stable and uninterrupted flow of nitrogen gas at extremely high purity and uncapped flow rates.

KEY POINTS


  • 95% to 99.999% purity
  • Unlimited flow capabilities
  • Compact and expandable modular design
  • Cost-effective system redundancy when using multiple modules
  • Energy Saving Controls for low demand periods
  • Touch screen PLC displaying real-time operating details
  • Purity dependent energy savings option
  • RS485 (Modbus or Ethernet communication)
  • Digital inputs and analog outputs for remote monitoring and alarm capabilities
  • Zirconia oxygen analyser
  • Integrated pre-treatment compressed purification system (optional)
  • 115V single phase power

    


Ultra-high purity nitrogen generators


The technologically advanced nano GEN2 nitrogen generator operates on the Pressure Swing Adsorption (PSA) principle to produce a continuous uninterrupted stream of nitrogen gas from clean dry compressed air. 

Pairs of dual chamber extruded aluminum columns are filled with Carbon Molecular Sieve (CMS). Joined via an upper and lower manifold, the high density filled columns produce a two bed system. 

Clean, dry compressed air enters through the inlet manifold to the bottom of the ‘online’ bed and flows up through the CMS to separate the compressed air where oxygen and other trace gases are preferentially adsorbed. The nitrogen then passes through the supporting bed layer and outlet manifold to the buffer vessel and a nano F1 buffer vessel filter before re-entering the GEN2 nitrogen generator for purity monitoring. 

After a pre-set time the control system automatically switches the beds. One bed is always online generating nitrogen while the other is being regenerated. 

During regeneration, the oxygen that has been collected in the CMS stage is exhausted to atmosphere. A small portion of the outlet nitrogen gas is expanded into the bed to accelerate the regeneration process. 


    


IMPORTANT FEATURES 

1.  PLC controlled operation
Each GEN2 nitrogen generator is operated by a reliable PLC control system with digital and analog (optional) outputs for remote monitoring and alarm capabilities. GEN2 includes an easy-to-operate touch screen graphical interface which offers valuable features including ‘power on’, ‘hours run’, ‘oxygen purity’, ‘pressure’, ‘online column’ and ‘service required’ indicators. In addition, four pressure gauges provide the operator with continuous indication of column A, column B, air inlet and nitrogen outlet pressures. 

2. Oxygen analyser 
A built-in oxygen analyser continuously monitors the oxygen concentration in the nitrogen stream. Our built-in purity analyser utlises world leading sensor technology to give a more reliable measurement, faster response time and longer life compared to traditional analysers. Incorporated into the PLC controls, our oxygen analyser guarantees downstream purity levels are consistently achieved and maintained.

3. Ecomode energy saving control 
This unique control feature utilises an outlet pressure monitor to reduce energy consumption during periods of low demand or no usage. This ECO-mode helps in minimissing power consumption during low demand.

4.Reliable high performance valves 
Inlet, outlet and exhaust valves are managed through unique integrated nano piston valves, which are designed for reliability, long service life and ease of maintenance. The generator also incorporates adjustable equalisation valves which smooth the column switch over, improve air/nitrogen ratios and extend CMS life. This highly durable valve system is backed by a comprehensive two year warranty.

5. Multi-bank design 
The unique multi-bank design enables additional generators to be added in the future as demand increases. Your GEN2 nitrogen generator can grow with your company.

6. Maximum corrosion protection 
High tensile aluminum columns are first corrosion protected and then powder coated to provide maximum protection for all environments.

PRODUCT MODELS




SPECIFICATIONS


Design operating pressure range
6 - 12 barg
Design operating temperature range
5 to 50°C
Recommended operating temperature
20 to 25°C
Maximum inlet particulate 
0.1 micron
Maximum inlet oil content  
0.01 ppm
Recommended inlet dew point 
-40°C PDP
Supply voltage
85 to 264V AC, 50/60Hz
Power rating
72W