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2. Pressure swing adsorption - Wikipedia

   en.wikipedia.org/wiki/Pressure_swing_adsorption

   Hybrid vacuum pressure swing adsorption (VPSA) systems also exist. VPSA systems apply pressurized gas to the separation process and also apply a vacuum to the purge gas. VPSA systems, like one of the portable oxygen concentrators, are among the most efficient systems measured on customary industry indices, such as recovery (product gas out ...

3. Oxygen plant - Wikipedia

   en.wikipedia.org/wiki/Oxygen_plant

   An unquestionable advantage of adsorption-based oxygen plants is the low cost of oxygen produced in the cases where there are no rigid requirements to the product oxygen purity. Structurally, the adsorption oxygen plant consists of several adsorbers, the compressor unit, pre-purifier unit, valve system and the plant control system.

4. Oxygen concentrator - Wikipedia

   en.wikipedia.org/wiki/Oxygen_concentrator

   This type of adsorption system is therefore functionally a nitrogen scrubber, allowing the other atmospheric gases to pass through, leaving oxygen as the primary gas remaining. PSA technology is a reliable and economical technique for small to mid-scale oxygen generation. Cryogenic separation is more suitable at higher volumes. [2]

5. Air separation - Wikipedia

   en.wikipedia.org/wiki/Air_separation

   A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.

6. Chemical oxygen generator - Wikipedia

   en.wikipedia.org/wiki/Chemical_oxygen_generator

   Advances in technology have provided industrial oxygen generator systems for use where air is available and a higher concentration of oxygen is desired. Pressure swing adsorption (PSA) incorporates a molecular sieve for gas separation. In the case of oxygen generation a zeolite-based sieve forces preferential adsorption for nitrogen. [citation ...

7. Gas separation - Wikipedia

   en.wikipedia.org/wiki/Gas_separation

   Temperature swing adsorption (TSA) is similar to other swing adsorption techniques but cycles the temperature of the adsorbent bed-gas system instead of the gas pressure to achieve separation. [ 2 ] Cryogenic distillation