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THE PSA CONCEPT
How Oxygen is Obtained from ambient air.

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Pressure Swing Adsorption (PSA) technique is utilised to obtain Oxygen from atmospheric air. Compressed air at about 4-6 bar, depending on the size of the unit is processed via a compressor or from a compressed air network alternatively in two towers equipped with special grade of Molecular Sieves (Adsorbers A and B). Through the pressure change controlled electronically by valve block D, Nitrogen, moisture and Carbondioxide are adsorbed and desorbed.

   

In Adsorber A the incoming air is freed of N2, H2O & CO2, which are adsorbed by Molecular Sieves of tower A. The outgoing oxygen is stored in buffer tank C. After a preset period, the process of adsorption automatically switches to Adsorber B. Whilst B is being filled, A is emptied bya pressure drop and venting to atmosphere. Venting with Oxygen from the other tower ensures that the Nitrogen and other impurities are completely removed from the Molecular Sieves.

 

 
COMPACT UNITS FOR INDEPENDENT PRODUCTION OF OXYGEN
Our company, PSA Nitrogen Ltd., manufactures PSA based Oxygen Generators of production capacity upto 200 NM3/hr. The product gas purity can be upto 95% Oxygen. These PSA Oxygen Generators are ideal for economic utilization in several areas. Because of their compact construction, these equipment require little space and can be erected practically anywhere without any special constructional measures being required. Apart from compressed air supply, a single phase power source is required for the operation of Sequence Programmer

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OPTION 1 - PSA ROUTE

psa

 

OPTION 2 - VSA/VPSA ROUTE
These O2 plants where desiccant is regenerated through vaccum are energy efficient for capacities larger than 200 Nm3/hr. We manufacture such VSA/VPSA technologh based O2 plants for capacities upto 600 Nm3/hr.


Applications

These PSA/VSA type Oxygen Generators being manufactured by PSA NITROGEN LIMITED will be ideal for the following applications :
 Oxygen-enriched combustion.
 Oxidation in chemical processes.
 Medical use.
 Waste water treatment.
 Oxygen bleaching in Paper industries.
 In electric arc furnace for steel making.

 

INQUIRY DETAILS
Oxygen requirement (Max. and normal in NM3/hr).
Desired Oxygen purity.
Required Oxygen pressure.
Brief description of application.
 
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