Welcome to our Frequently Asked Questions section!

Please do not hesitate to send a request or simply contact us in case you need more information.

How does the PSA technology process for Nitrogen gas production work?

  • PSA = Pressure Swing Absorption (Oxygen molecules are absorbed under pressure).
  • OXYMAT A/S uses two columns with molecular sieves to ensure continuous production.
  • 7 bar(g) dry compressed air feed one column of the generator where the pressure is built. O2 is tied to a molecular sieve during pressurization, and the N2 is allowed to pass through to the Nitrogen receiver tank.
  • While pressure is built in one vessel, the second remains standby without pressure.
  • A part of the produced gas is used for regeneration of the molecular sieve in the standby column.
  • Carbon Molecular Sieve (CMS) is inside the columns of the generator. The molecular sieve is fully regenerative and has a life span of 40.000 operation hours in the OXYMAT Generators. Further information.

How does the PSA technology process for Oxygen gas production work?

  • PSA = Pressure Swing Absorption (Nitrogen molecules are absorbed under pressure).
  • OXYMAT A/S uses two columns with molecular sieves to ensure continuous production.
  • 6 bar(g) dry compressed air feed one column of the generator where the pressure is built. N2 is tied to a molecular sieve during the building of pressure, and the O2 is allowed to pass through to the Oxygen receiver tank.
  • While pressure is built in one vessel, the second remains standby without pressure.
  • A part of the produced gas is used for regeneration of the molecular sieve in the standby column.
  • Zeolite is inside the columns of the generator. The molecular sieve is fully regenerative and has an average life span of 40.000 operation hours in the OXYMAT Generators. Further information

What are the main benefits of OXYMAT Generators comparing to other gas sources?

  • The PSA process is an extremely clean operation and the only ‘raw material’ is air
  • Only produce the gas you, when and where you need – supply the exact quantity and quality needed
  • No loss of production time due to running out of gas
  • Quick pay-back / 1-2 years
  • No’ on on-going costs (refills, delivery and transportation charges etc.)
  • Energy efficient. Only electricity is needed to run the generators
  • No safety risks of handling of high pressure cylinders
  • In comparison with cylinders it gives overall cost reduction up to 80%.
  • Safe delivery; controlled flow and uninterrupted gas

Is it necessary to change the molecular sieve of PSA nitrogen and oxygen generators?

As long as the feed air is of sufficient quality, the OXYMAT PSA generators do not need any
renewal of the molecular sieve, thanks to best quality molecular sieves used for all our PSA
generators.

What does a complete PSA nitrogen or oxygen system consists?

Our typical system is composed of PSA generator with a control unit and oxygen monitor. The
complete operating system also requires air package consisting of feed air compressor, an air
dryer, filters, air-receiving tank and product tank.

Why do I need an air dryer?

An air dryer assures that air is supplied at the proper dew point for the ultimate generator performance. The air dryer has to be selected for the highest ambient temperature at the installation site in order to avoid that feed air with too high water content is getting to the molecular sieve. If air dryer stops working or fails then the molecular sieve get contaminated and PSA oxygen generator will be damaged.

Can I use air compressors with an integrated air dryer?

Compressors with an integrated air dryer can be used only if the ambient air temperature at the installation site does not exceed 25 °C.

What is the power supply requirement for our PSA systems?

Our generators require about 0.1 kW at 110 or 220 Volts, 50 or 60 Hz, 1 Phase.

What is the maintenance cost of an OXYMAT PSA system?

OXYMAT systems offer high reliability through fewer moving parts with high quality components and negligible maintenance. Only the air filtration cartridges in PSA need to be replaced based on a maintenance schedule. The major maintenance is for air compressor.

Do you have a reference list?

Yes. As more than 2800 Oxymat generator systems are currently in operation around the world, it is difficult to mention them on our website. Please contact us for reference list.

Is there an installation site I can visit?

Yes. OXYMAT has more than 2800 generator systems installed all around the world. Please contact us to find the nearest OXYMAT system in your region.

Does OXYMAT offer customer service after sales?

Yes. At OXYMAT, we know that selling a product or service isn’t the end of the process and we believe that customer loyalty is necessary to retain business. That is why we provide great customer service for both before and after sales. Our 24×7 aftersales service helps to ensure that customers are satisfied with their purchases. We are proud to say that we provide the best aftersales service in the market. Trainings are held regularly for distributors and customers to strengthen relationships, enhance their product knowledge, and learn new
product/technological developments.

Do you offer installation & commissioning and start up service?

Yes, our service engineers can reach any place on the earth for commissioning and installation of our systems. OXYMAT has a network spread all over the world to ensure world-wide service and our local partners in almost all countries are trained to provide service locally.

Can OXYMAT PSA generators produce uninterrupted gas 24x7x365?

OXYMAT Generator will produce the required nitrogen 24x7x365 days for years when called for. High reliability through fewer moving parts and high quality components. You will get controlled flow and uninterrupted gas.

What is the purpose of the gas receiver tank?

The gas receiver tank allows the gas to be delivered to your application at a consistent flow rate and a consistent pressure.

Can I fill the cylinders with OXYMAT oxygen/nitrogen generator systems?

All OXYMAT systems can be expanded with cylinder filling option. A oxygen/nitrogen generator
combined with cylinder backup gives the highest level of safety.

How OXYMAT assures quality of its products?

Quality assurance is an integral part of OXYMAT’s operations and it is our priority to always deliver high quality products and services. OXYMAT holds all relevant approvals for serving numerous applications. Please contact us for our certificate pack.

Can OXYMAT built custom designs based on special requirements?

At OXYMAT built any type of designs when it comes to PSA technology. Our systems are heavy duty construction and design for rough conditions using high quality & durable components. We are expert in container installed systems.

Are OXYMAT systems more efficient than competitors?

The OXYMAT generators have a higher separation efficiency than any other PSA system in the market with reduced feed air requirements resulting into lower energy requirement.

Are OXYMAT PSA oxygen/nitrogen generation systems safe?

The PSA columns of all our generators are thoroughly calculated and tested for fatigue cracking. OXYMAT systems have low operating pressures, no safety risks of handling of high pressure gas cylinders.

Are OXYMAT systems fully Automatic?

Yes, our systems are fully automated; Unattended Operation; Remote Control Access; Production begins when demand downstream is sensed. The system will go into standby mode when oxygen is not required.

DO I require > 99% pure oxygen for medical use?

Medical Oxygen Purity Requirements according to U.S. Pharmacopeia and European Pharmacopeia is 93 ± 3%, according to British Pharmacopeia it is 94 %. OXYMAT PSA oxygen generators meet these requirements for use in medical application. Liquid oxygen (LOX) at 99% oxygen purity may have some advantages for metal cutting, but not necessarily for medical applications. Some local authorities require 99% purity oxygen due to old regulations and ordinances. However, with the acceptance of international specifications from CSA (Canada) and ISO 10083 (European) these older specifications are being revised to 93%. There have been powerful competitive interests that have lobbied local authorities to maintain a 99% medical oxygen purity standard to prevent the introduction of less expensive alternatives like PSA oxygen generators.

What is the lifespan of Molecular sieves used in OXYMAT PSA systems?

Min. life span of the molecular sieve is 40.000 operation hours and the molecular sieve is fully regenerative. The supplied air quality is most important for the performance of molecular sieve. If you keep the quality of air recommended by us then there should be any problem for the molecular sieve performance.

Do OXYMAT systems need special site preparation for installation?

Our systems are suitable for both indoor and outdoor installation. If you place the unit outdoors, it has to be covered by a shed. Rain protection is a must! If you place it inside, you need proper air circulation for compressor cooling and air intake and exhaust for both, compressor and PSA generator must have a duct to outside. There is no special floor requirement and can be placed on shop floor.

Can I use oil free compressor or regular compressor for OXYMAT PSA systems?

First of all oil free compressors are extremely expensive compared to oil lubricated ones and not at all required for OXYMAT PSA systems as long as the feed air quality recommended by us is maintained.

How much energy is consumed to run OXYMAT generator?

The power consumption for OXYMAT generator is very negligible (0.1 kW which is required to for control unit). Majority of power is consumed by air compressor.

Can OXYMAT generators be installed in containers/skid/frames etc?

Yes, our systems can be installed in a container (10 to 40 foot), on skid and frames.

What is the standard pressure produced by OXYMAT PSA systems?

The outlet pressure from OXYMAT oxygen generator is up to 6 bar and for nitrogen systems it is from 5-8 bar. For higher outlet pressure booster compressors can be used.

Does OXYMAT PSA systems face problem of evaporation lost like liquid oxygen?

No, with OXYMAT PSA systems you will produce gas when you need and no need to store cylinders like LOX cylinders where up to 5 % of tank volume gas is evaporated.

What are the main benefits of PSA oxygen systems compared to liquid oxygen/cylinders?

We strongly believe OXYMAT systems are and can help you save money on your oxygen/nitrogen gas costs and allow you to produce gas on-site. Simple and cost effective from a supply of compressed air, it helps you avoid rental charges, transportation expenses, labour costs, and evaporation losses of bulk systems.

What is the influence of the ambient conditions at the place of installation?

The local conditions at the place of installation are very important on the performance of a PSA generator

Temperature: has a significant impact on compressor and dryer performance. The ambient condition of inlet air to the air compressor affects the net weight of the final delivered compressed air to the system. Increases in ambient air temperature reduce the efficiency of air compressors and air dryers. Proper ventilation and ducting of the “compressor room” is required to maintain inlet air temperatures within design
specifications.

Elevation: The altitude at which a compressor is installed must always be given consideration. As altitude above sea level increases, the weight of the earth’s atmosphere is less and compressor will need more power to pump same amount of gas since positive suction pressure has dropped because of altitude. If you are high in altitude, then you need to oversize the compressor.

Humidity: Humidity affect is not as dramatic as going up in altitude and temperature. However, extremes need to be looked at.

Why OXYMAT uses coal tower when other competitors do not use?

Medical oxygen is considered as drug and it is sensitive to quality. Keeping this in mind OXYMAT add the coal tower in its systems for hospital use which provide an extra filtration and even removes any odor or any other contamination.

Is air conditioning or heating is required in the installation?

At extreme conditions we recommend air conditioning (above 50 °C) and heating (below 5°C)

What are the payment terms for OXYMAT PSA gas generators?

Our standard payment term is 25% advance payment and 75% before delivery. We do also accept letter of credit (L/C) and other means of payment terms can be agreed on case to case basis.

Where OXYMAT PSA gas generators can be used?

OXYMAT PSA gas generators can be used in wide range of applications mainly in aquaculture, medical oxygen in hospitals, modified atmosphere packaging, inerting, blanketing, purging, tire filling, food and beverage packaging, gold mining, coal mines, ozone and waste water treatment, marine, laser cutting, electronics, laboratories, and many more. Contact us to learn how you can benefit from our oxygen/nitrogen PSA systems.

What is the maintenance cost/service cost for OXYMAT PSA gas generators?

OXYMAT PSA generators require negligible or little maintenance. The major maintenance is required by air package and this can be serviced locally anywhere. Filter cartridges need to be replaced based on maintenance schedule. Please ask for recommended spare parts list with quotation or please contact us for more details.

Are PSA gas generators are environment friendly and safe to use?

The on-site PSA gas generator systems are eco-friendly as one can save a lot on transportation of purchase gas cylinders and unnecessary green-house gas emissions. With on-site PSA gas generator systems you can make your own gas anytime whenever there is a need, this no need to store large quantities of high pressure cylinders and hazardous gas and moreover handling of high pressure cylinders is eliminated.

Who would benefit from using PSA gas generators?

OXYMAT PSA generators suit gas users those who have a fairly steady usage of gas. Our systems provide a steady output of gas at a given flow and pressure. PSA systems will provide the gas where and when you need and are on standby mode when the gas is not required. Exactly based on customers’ requirements. In some cases, it is desirable to save a surplus supply of gas for use in times of very high demand. You can generate your own gas when and where you need and they can save significantly over purchased gas.

What do I need to send when I need service and spare parts for my generator?

If you face any problems with our systems please contact our service hotline or send us an email with details with serial number and some photos which could help us understand your problem and give you a solution.