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The AirSep N2WAVE™ Twin Tower Series is a range of Pressure Swing Adsorption (PSA) nitrogen gas generators designed to produce a reliable, continuous supply of nitrogen on site from compressed air.
Using Carbon Molecular Sieve (CMS) technology, the N2WAVE Twin Tower Series separates nitrogen from compressed air by selectively adsorbing oxygen molecules under pressure. This allows nitrogen to pass through as the product gas, providing an efficient alternative to delivered nitrogen cylinders or bulk liquid nitrogen.
The N2WAVE Twin Tower Series is available across a wide range of flow rates and nitrogen purities, making it suitable for applications ranging from manufacturing and laser cutting to food and beverage, pharmaceuticals, electronics, chemical processing, oil and gas and other industrial processes.
AirSep states that the N2WAVE Twin Tower Series offers improved air-to-nitrogen efficiency and reduced energy consumption compared with previously available generators.
The N2WAVE Twin Tower Series is designed for businesses that require a dependable source of nitrogen without the logistical costs and limitations associated with delivered gas.
Generate nitrogen where and when it is required, helping reduce dependence on cylinders and bulk nitrogen deliveries.
The N2WAVE Twin Tower Series can produce nitrogen from 95% up to 99.999% purity, depending on the selected model and required flow rate.
Systems are available for nitrogen flows from approximately 19 CFM to 2,041 CFM at 95% purity, with configurations ranging from approximately 1.8 CFM to 196 CFM at 99.999% purity.
The N2WAVE uses a twin-tower PSA process and CMS adsorbent to separate nitrogen from compressed air efficiently.
The system is designed for automated operation and incorporates a touchscreen HMI for monitoring and control. Remote capabilities are also available.
Generating nitrogen on site can help eliminate or reduce costs associated with cylinder rental, gas deliveries and environmental or other delivery surcharges.
The N2WAVE Twin Tower Series has been designed with a simple structure and compact design to support straightforward operation and maintenance.
The AirSep N2WAVE Twin Tower Series uses Pressure Swing Adsorption to separate nitrogen from compressed air.
Each generator contains two vessels filled with Carbon Molecular Sieve (CMS). The CMS selectively adsorbs oxygen molecules while allowing nitrogen to pass through as the product gas.
Clean, compressed air enters one of the CMS-filled adsorption vessels.
Under pressure, the Carbon Molecular Sieve preferentially adsorbs oxygen molecules from the compressed air.
Nitrogen is not significantly adsorbed by the CMS and therefore passes through the vessel to become the product gas.
Before the CMS becomes saturated with oxygen, the compressed-air supply switches to the second adsorption vessel.
The first vessel is depressurised, allowing the adsorbed oxygen to be released back into the atmosphere. A nitrogen purge assists the regeneration process.
The two vessels alternate between nitrogen production and regeneration, creating a continuous supply of nitrogen.
Under normal operating conditions and with appropriate maintenance, the CMS is designed to be regenerative, allowing the process to repeat continuously.
The N2WAVE Twin Tower Series provides a broad range of nitrogen flow rates and purity levels.
Specification | N2WAVE Twin Tower Series |
Technology | Pressure Swing Adsorption (PSA) |
Adsorbent | Carbon Molecular Sieve (CMS) |
Nitrogen purity | 95% to 99.999% |
Maximum published flow at 95% purity | Up to 2,041 CFM |
Maximum published flow at 99.999% purity | Up to 196 CFM |
Product pressure | Up to 124 PSIG |
Configuration | Twin tower |
Operation | Automatic |
Control | 7-inch HMI touchscreen |
Remote capabilities | Available |
Regeneration | Pressure swing with nitrogen purge |
Product gas | Nitrogen |
Actual flow depends on the selected AirSep model and required nitrogen purity. As nitrogen purity increases, the available product flow generally decreases. Refer to the individual model specification sheet when selecting a generator.
Choosing the correct PSA nitrogen generator requires balancing nitrogen purity with the required flow rate.
The N2WAVE Twin Tower Series is designed to provide nitrogen at a range of purity levels, including:
The available flow varies according to the selected N2WAVE model and required purity. AirSep's published technical data provides model-specific flow rates across these purity levels.
If you are unsure which purity and flow combination your application requires, our technical team can help determine the appropriate generator specification.
The N2WAVE Twin Tower Series includes a range of standard features designed to simplify operation, monitoring and maintenance.
These features are listed by AirSep as standard equipment for the N2WAVE Twin Tower Series.
The 7-inch HMI touchscreen provides an interface for monitoring and controlling the nitrogen generation system.
The N2WAVE range is also designed with remote capabilities, providing additional flexibility for monitoring system operation.
ECO Mode is included as a standard feature and is designed to support efficient generator operation.
AirSep incorporates a silencer design intended to minimise operating noise and support quieter operation.
The N2WAVE Twin Tower Series encompasses a range of AirSep models designed to accommodate different nitrogen flow and purity requirements.
Published technical data provides model-specific nitrogen delivery rates across purity levels from 95% through 99.999% and recommended buffer-tank volumes for individual models.
Because generator performance depends on the required nitrogen purity and operating conditions, we recommend selecting the model based on your actual application rather than simply choosing a generator based on maximum flow.
Contact us with your required nitrogen purity, flow rate and operating pressure and we can help identify the appropriate N2WAVE model.
Additional equipment can be specified according to the application and installation requirements.
Available options include:
The appropriate configuration will depend on the compressed-air system, nitrogen demand, required purity, outlet pressure and application.
The N2WAVE Twin Tower Series can be used across a wide range of industrial and commercial applications where a reliable supply of nitrogen is required.
Nitrogen can be used in manufacturing and metal-processing environments for:
Nitrogen can provide an inert atmosphere and support controlled manufacturing processes.
Nitrogen generation is widely used in food and beverage applications where oxygen displacement and controlled atmospheres are required.
Applications include:
On-site nitrogen generation can provide a continuous supply without relying solely on delivered gas.
Nitrogen generators can support a variety of oil and gas processes, including:
AirSep also identifies nitrogen as a suitable gas for displacement and inerting applications within oil and gas operations.
Nitrogen can be used to provide an inert atmosphere and protect products, vessels and processes.
Applications include:
High-purity nitrogen can be used in electronics manufacturing and assembly, including:
The required nitrogen purity will depend on the specific process.
Nitrogen is used in pharmaceutical manufacturing and packaging to help displace oxygen and protect sensitive products.
Applications include:
AirSep identifies pharmaceutical packaging and blanketing among its nitrogen applications.
Nitrogen can be used in high-pressure plastic injection moulding and other plastics-processing applications.
Nitrogen can be used in mining applications where controlling oxygen concentration and creating an inert atmosphere is required.
AirSep identifies nitrogen generation as a solution for controlling Lower Explosive Limits (LEL) in mining environments.
Traditional nitrogen supplies can involve cylinders, liquid nitrogen deliveries, storage requirements, rental charges and transportation costs.
An on-site nitrogen gas generator produces nitrogen from compressed air at the point of use. For businesses with regular or high nitrogen demand, this can provide greater control over nitrogen supply while reducing reliance on deliveries.
Potential advantages include:
The financial benefits will depend on nitrogen consumption, required purity, operating hours, compressed-air costs and the existing gas-supply arrangement. AirSep specifically identifies rental fees, delivery charges and environmental surcharges as costs that can potentially be eliminated through on-site nitrogen generation.
For applications with consistent nitrogen demand, an on-site PSA generator can provide an alternative to purchasing nitrogen in cylinders or bulk liquid form.
On-Site Nitrogen Generation | Delivered Nitrogen |
Nitrogen produced on demand | Dependent on deliveries |
Continuous supply | Subject to delivery schedules |
No routine cylinder handling | Cylinders may require handling |
Reduced reliance on storage | Requires gas storage |
Potentially lower logistics costs | Delivery and rental costs may apply |
Nitrogen produced at point of use | Gas transported to site |
Purity can be selected for the application | Supply specification depends on contract |
The most suitable nitrogen supply method depends on your consumption, purity requirements, site conditions and application.
Selecting an industrial nitrogen generator requires more than simply choosing a flow rate.
Identify the minimum nitrogen purity required by your process. For example, an application may require 95%, 99%, 99.9% or 99.999% nitrogen.
Establish your normal and peak nitrogen consumption. This should include continuous demand as well as any intermittent high-flow requirements.
The required nitrogen pressure at the point of use should be established before selecting the generator and associated equipment.
The N2WAVE Twin Tower Series can provide product pressures up to 124 PSIG, subject to system configuration.
The N2WAVE generates nitrogen from compressed air, so the available compressed-air flow, pressure and quality need to be considered when sizing the system.
A nitrogen receiver can be specified as an option where additional buffer capacity is required.
Depending on your process, an oxygen analyser, dew point sensor and other monitoring equipment may be appropriate.
Our technical team can help assess these requirements and recommend a suitable N2WAVE configuration.
The AirSep N2WAVE is a PSA nitrogen gas generator that produces nitrogen from compressed air using Carbon Molecular Sieve (CMS). The Twin Tower Series provides continuous nitrogen production across a wide range of flow rates and purity levels.
A PSA nitrogen generator uses an adsorbent material, in this case Carbon Molecular Sieve, to selectively remove oxygen from compressed air. Nitrogen passes through as the product gas while the oxygen is released during the regeneration stage.
The N2WAVE Twin Tower Series can produce nitrogen from approximately 95% to 99.999% purity, depending on the model and required flow rate.
The Twin Tower Series provides flows from approximately 19 CFM to 2,041 CFM at 95% purity, with approximately 1.8 CFM to 196 CFM available at 99.999% purity, depending on the model.
N2WAVE systems can provide product outlet pressures up to 124 PSIG, depending on the system configuration and operating conditions.
Carbon Molecular Sieve is the adsorbent material used in the PSA process. It selectively adsorbs oxygen molecules from compressed air under pressure, allowing nitrogen to pass through as the product gas.
The CMS is designed to be regenerative under normal operating conditions. It is regenerated during the PSA cycle by depressurisation, assisted by a nitrogen purge. Correct system operation and maintenance are important for maintaining performance.
N2WAVE nitrogen generators can be used in manufacturing, metal processing, food and beverage, oil and gas, chemical processing, electronics, pharmaceutical manufacturing, plastics and mining applications.
Yes. Laser cutting and laser bellows purging are among the applications listed by AirSep for the N2WAVE range. The appropriate nitrogen purity, flow and pressure should be established based on the specific laser and cutting process.
An appropriately sized N2WAVE generator can provide an alternative to delivered nitrogen for many continuous-use applications. Whether it is suitable depends on nitrogen demand, purity, pressure, operating hours and the existing compressed-air infrastructure.
Yes. PSA nitrogen generation uses compressed air as its feed gas. The compressed-air supply must be suitable for the required nitrogen production rate and system operating conditions.
AirSep lists a receiver, dew point sensor kit, nitrogen outlet pressure regulator and oil indicator as optional equipment for the N2WAVE Twin Tower Series.
The correct generator depends on nitrogen purity, flow rate, operating pressure, application, operating hours and compressed-air availability. Providing these details allows the system to be correctly sized for your application.
They can be, particularly for applications with consistent nitrogen consumption. On-site generation can reduce costs associated with cylinder rental, deliveries and other supply charges. However, the overall economics depend on your nitrogen consumption, electricity and compressed-air costs, operating hours and existing gas-supply arrangement.
Yes. The Twin Tower PSA process alternates between nitrogen production and adsorber regeneration, allowing the system to provide a continuous nitrogen supply.
Looking for a reliable PSA nitrogen gas generator for your industrial application?
Our team can help you determine the appropriate AirSep N2WAVE nitrogen generator based on your required nitrogen purity, flow rate, operating pressure and application.
Contact us today for technical advice, system sizing and a quotation.
Please send us your enquiries via the following email form.