There are many different names associated with the adsorption method of producing industrial gases – PSA, VSA, VPSA and Oxygen Concentration Generators. In many cases, the names are used interchangeably. The Adsorptech oxygen system has both a vacuum and positive pressure step in our proprietary process and therefore prefers the term VPSA.
Current Adsorptech oxygen VPSA generators include:
The Adsorptech proprietary VPSA process requires less energy than alternative oxygen systems. Adsorptech’s proprietary design has no need for expensive high-quality seal water. For applications requiring up to 40 psig oxygen, Adsorptech’s VPSA systems require no cooling water.
Air contains 21% oxygen and the majority balance nitrogen. In Adsorptech’s oxygen VPSA process, compressed air is fed into a vessel filled with molecular sieve at a positive pressure where the nitrogen is selectively adsorbed and the oxygen passes through as product. About when the nitrogen adsorption capacity is reached, a vacuum step removes the accumulated nitrogen and regenerates the sieve. Multiple vessels are used to produce a continuous supply of oxygen. Depending upon the oxygen application pressure need, an oxygen booster may be included.