Air Separation Process

❖ Air is used as feed stock.
❖ Oxygen is Separated Based on physical characteristics.
❖ Must remove Nitrogen and Argon for 99% Pure Oxygen
❖ Pressure Swing Adsorption Methods is used for design.
❖ It uses adsorbents in two columns to separate Molecules of Oxygen from Air, removing Nitrogen and Argon in continuous flow.

Pressure Swing Adsorption Process

❖ As described Above it uses two Adsorption Columns and it is a 04 Stage process.
❖ 1. Adsorption 2. Production 3. Blowdown & 4. Purge.

Pre - Treatment

❖ Air from environment is pretreated for Moisture, Carbon Dioxide & any other disinfection for bacteria.
❖ A UV pre Treatment Chamber is used for disinfection.
❖ Silica gel Beds are used to remove moisture with a Heating Coil.

Basic Design

500 LPM maximum continuous Supply of 99% pure oxygen Using PSA technology.

It can be directly supplied to a 100 bed hospital for direct consumption by patients at 5 lpm.

Oxygen is free from any other contamination.

1. Recovery of Oxygen 61% appx.
2. So Inlet O2 reqd. Will be 820 LPM.
3. O2 Quantity in Air 20% appx.
4. Total Inlet air 4098 LPM.
5. A cycle time of 40 sec is assumed.
6. Oxygen adsorbed per 2 column 950 L

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