The Process
The production of gases with the aid of the adsorption technology is based on the capability of porous adsorption agents to bind gases the individual constituents of the gas mixture are adsorbed to differing degrees on the very large surfaces of the adsorbent agents. this effect is used within a Vacuum pressure swing adsorption process to continuously separate out one constituent from a feed gas mixture or feed air.
Zeolite Molecular Sieves are used as adsorption agents when producing oxygen from the air by adsorptive means they adsorb nitrogen, water vapor and carbon dioxide to a much higher degree than oxygen this means that a product flow comprising essentially only oxygen and argon can be removed from the process air being passed through the adsorption bed, for higher outputs third bed is provided.
The compressed air enters Absorbers and Nitrogen is absorbed while the oxygen product leaves the vessels after a certain time the adsorption is interrupted and evacuation by a vaccum pump desorbs the enriched nitrogen gas.The oxygen product flow is compressed to the required discharge pressure,if required and fed to end use process.
