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VPSA Oxygen Generator Plant & Manufacturer - Airox Technologies
PSA Oxygen System

Industrial PSA

AirSep can provide PSA Oxygen Plants which offer 93% pure oxygen with capacities from 6,000 to 40,000 SCFH at up to 20 psig pressure without the use of an oxygen compressor. If desired, oxygen compressors can be supplied to deliver oxygen pressures up to 3,000 psig (20,684 kPa).
How Does PSA Work? It’s All About the Swing!

Oxygen is essential for supporting life as well as many other industrial and environmental applications. This makes it one of the largest selling chemicals on the planet. AirSep has adopted the motto: “Why buy when you can make your own oxygen?”

Oxygen exists in the atmosphere around us. It makes up approximately 21% of the air we breathe. If only that oxygen could be separated…

The technology behind all of our standard oxygen generators is the Pressure Swing Adsorption (PSA) process. It is the engine that drives the separation of oxygen from air. It is a purely physical process; there are no chemical, electrical, or other reactions in our process.

For certain specific applications, we can make a variation of the PSA process, called the Vacuum Pressure Swing Adsorption (VSA/VPSA) process. The only differences are that VPSA uses a feed blower instead of an air compressor and the absorber vessels are desorbed through a vacuum blower. The net result is a significant decrease in the power consumption of the system as a whole. However, these plants are typically only cost effective for very large oxygen capacities.

Air contains 21% oxygen, 78% nitrogen, 0.9% argon, and 0.1% other gases. AirSep Oxygen Generating Systems separate oxygen from compressed air through a unique Pressure Swing Adsorption (PSA) process. The PSA process uses molecular sieve (a synthetic zeolite), which attracts (adsorbs) nitrogen from air at high pressure and releases (desorbs) it at low pressure. AirSep Oxygen Generators use two vessels filled with molecular sieve as adsorbers. As compressed feed air flows through one of the vessels, the molecular sieve adsorbs nitrogen.

The Pressure Swing Adsorption process for the generation of enriched oxygen gas from ambient air utilises the ability of a synthetic Zeolite Molecular Sieve to absorb mainly nitrogen. While nitrogen concentrates in the pore system of the Zeolite, Oxygen Gas is allowed to pass through as a product.

As Compressed Air passes up through one of the Adsorbers, the molecular sieve selectively adsorbs the Nitrogen. This then allows the remaining Oxygen to pass on up through the adsorber and exit as a product gas.

When the adsorber becomes saturated with Nitrogen the inlet airflow is switched to the second off line adsorber. The first adsorber is regenerated by desorbing nitrogen through De-Pressurisation and purging it with some of the product oxygen. The cycle is then repeated and the pressure is continually swinging between a higher level at adsorption (Production), and a lower level at desorption (Regeneration).

Our Oxygen Machines

We have oxygen Generator System ranging from 2.5 NM3/Hour to 3023 NM3/Hour

Industrial Installation
PSA Oxygen System

40,000 SCFH Tonnage PSA Plant - World's Largest two-bed PSA Plant. In operation since 1992 at a pulp and paper mill, it supplies oxygen for use in oxygen delignification and bleaching.

PSA Oxygen System

Supplying oxygen for an ozone process, this PSA Plant produces up to 20,000 SCFH (525.8 Nm3/hr)

PSA Oxygen System

State-of-art Manufacturing Facilities !

AirSep is housed in modern facilities with over 120,000 square feet of manufacturing space near the city of Buffalo, in the state of New York. Our facilities are conveniently located near Niagara Falls and the Conadian border, making them ideal for easy transportation of our equipment anywhere in the world.

With state-of-the-art fabricating equipment like TIG/MIG welding machines, dual 20 Ton cranes, over 300 HP of available air compressor power, 7 loading docks, and several motor/generator sets to replicate power requirements from anywhere in the world, CPD is equipped to tackle jobs of any size and shape! Even the largest jobs are fabricated / assembled in our facility to ensure the highest quality standards are employed.

AirSep Corporation is the only PSA oxygen manufacturer that meets the following standards
  • ASME III (American Society of Mechanical Engineers)
  • NEMA (National Electrical Manufacturs Association
  • CE/PED 97/23/EC (Europian Standard/Pressure Equipment Directive)
  • CSA/CRN (Canadian Standards Association/Canadian Registration Number)
  • NYFD (New York Fire Department)
  • NRTl-UL 3101.1 (Nationality Recognized Testing Laboratory/Underwriters Lab)
  • ISO/DIS 1083(International Organization for Standards)
  • USP93XXII ( United States Pharmacopoeia)
  • EUROPIAN Pharmacopoeia
  • FDA Approved
  • HTM 2022

We use ISO 8573-1 Class-A Compliant clean & dry compressed feed air package which includes Screw compressor, dryer, complete filtration & air receiver is maintained. (Kaesar Package)

Industrial VPSA

Airox Technologies Limited has proved market leadership in PSA/VPSA by installing and running successfully more than 100 PSA oxygen generators in India. Airox in collaboration with AirSep Corporation, USA which the world leader in Vacuum Pressure Swing Adsorption (VPSA) & Pressure Swing Adsorption (PSA) technology which has 25 years of experience in the design and manufacture of onsite PSA/VPSAOxygen Generation Systems. Each system is custom engineered for the end-user's specific site and process requirements.

AirSep Corporation offers custom-engineered Vacuum Pressure Swing Adsorption (VPSA) Oxygen Systems designed to the specific requirements of installation, with capacities ranging from 3,000 SCFH (79 Nm3/hr) to 115,000 SCFH (3,023 Nm3/hr).

All AirSep PSA/VPSA oxygen systems are optimized for peak efficiency, low power consumption, high reliability with an expected on-stream efficiency of 99%, and an expected equipment life of +20 years. All system designs are highly integrated into skids to minimize footprint size, and simplify on-site installation.

AirSep VPSA Oxygen Systems are currently in use all over the world in remote, harsh, and/or demanding environments.

AirSep VPSA Oxygen Generator Benefits
  • The only utilities required are Cooling water & Electrical power. So cost of electricity consumed is the cost of Oxygen production. As compared to cryogenic plants, PSA and VPSA units help you recover your investment costs much faster due to low cost of Oxygen production. VPSAplant saves 65-70% cost on oxygen consumption compare to tradition cryogenic oxygen.
  • PSA and VPSA technology has been used in AirSep Oxygen plants for over three decades and our generators are operating successfully all over the world. This technology is time tested and very well proven. We use in-house molecular sieves which ensures that you get many years of trouble free operation and long life from your investment.
  • AirSep Oxygen Gas Plants are designed to be turned ON and OFF on-demand with the push of a single button. Oxygen Gas Generators only require 5 minutes to start producing high purity Oxygen and there isn't a need for the unit to be running when you are not consuming Oxygen gas. This is unlike the cryogenic systems where the unit has to be kept running to maintain Oxygen purity, whether gas is needed or not.
  • AirSep incorporates the use of several skids and designing the system in a modular construction. This feature allows easy transportation and easy installation of the system at your site. Our engineer is present at site to oversee installation and also to assist with commissioning and training of your personnel.
  • There are very limited moving parts in the PSA and VPSA process and hence with routine preventive maintenance, AirSep Oxygen Generators gives 20 + Years of trouble free operation.
  • When you install an AirSep Oxygen Gas Generator on-site, you are in control of your Oxygen supply. If you are currently using cylinders, then there is always dependence on your suppliers and there is no guarantee of the purity of Oxygen being supplied. With AirSep system, you can be sure of the purity of Oxygen with the included Oxygen purity analyzer.
  • AirSep does not compromise on the quality of molecular sieves and has own resources to procures it Unlike the Chinese make molecular sieves that are available for much lower cost, there are no problems in our molecular sieves such as excessive dust and low Oxygen purity
PSA Oxygen plant

Award wining AirSep VPSA Installation

The Rocky Mount AirSep VPSA Oxygen Generation System has been Selected to Receive an Award at the ACEC/NC Engineering Excellence Awards.

RALEIGH, N.C. – The Wooten Company, one of the most reputable engineering, planning and architectural firms in North Carolina, has received notification from the North Carolina Chapter of the American Council of Engineering Companies (ACEC/NC) that the firm has received the 2013 Engineering Excellence Award for demonstrating the highest degree of achievement, value and ingenuity in design of the Rocky Mount Oxygen Generation System.

This award was presented to The Wooten Company because of their ability to collaborate with the City of Rocky Mount, state agencies, sub consultants and equipment vendors in addressing the replacement of the obsolete and highly energy inefficient cryogenic oxygen generation plant, performing a critical function in the City’s Water Reclamation Facility, with an alternative system customized to needs of Rocky Mount.

Management at a 21 MGD wastewater treatment plant (WWTP) in Rocky Mount, NC reports saving over 65% of electric power costs for oxygen production by replacing a cryogenic plant with a customengineered vacuum pressure swing absorption (VPSA) system. The move was spurred by reduced input and increased power costs for the WWTP’s pure oxygen, biological nutrient removal (BNR)-type activated sludge system.

“The new VPSAsystem is costing us only $345/day for electricity, compared to over $1000/day with the cryo plant,” said Kirk Bass, superintendent of wastewater treatment.

PSA Oxygen plant

AirSep VPSA Oxygen Systems standard features include:

  • Remote monitoring of system operation by AirSep engineers
  • Critical process parameters monitored and recorded every 250 milliseconds
  • Automatic turndown capability from 100% to 0% flow capacity
  • Designed in accordance with local standards
  • Automatic and unattended operation
  • On-site start-up assistance by AirSep technicians anywhere in the world

AirSep VPSA Oxygen Applications

  • Ozone Generation
  • Water/Waste-Water Treatment
  • Furnace Enrichment
  • Steel Mills
  • Gold Leaching
  • Uranium Recovery
  • Oxygen Bleaching and
  • Delignification for Pulp and Paper Mills
  • Oxygen Fuel Burners
  • Glass Industry
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