The Production of Industrial-Grade Oxygen from Air by Pressure Swing Adsorption

Abstract

Oxygen, an odorless and colorless gas constituent of the atmosphere, is a vital gas component for the Earth, as it makes up 21% of the composition of the air we breathe. Apart from the importance of oxygen for human breathing, its highly pure form is demanding for industrial applications. As such, several technologies have been established to increase the oxygen purity from 21% to somewhat higher than 95%. One of the competitive technologies for producing this high-purity oxygen from the air is through pressure swing adsorption (PSA), which has the advantages of low cost and energy while being highly efficient. Also, PSA is a simple and flexible system due to its ability to start up and shut down more rapidly since its operation occurs at ambient temperature, which is enabled through the use of adsorbents to bind and separate the air molecules. The enhancement of the PSA’s performances was reported through the modification of PSA step cycles and material (zeolite) tailoring. A simplified complete set of a mathematical model is included for modelling the PSA system, aiming to ease the experimental burden of the process design and optimization of an infinite modification of PSA step cycles. Finally, some technological importance of oxygen production via PSA, particularly for onboard oxygen generation system and oxy-enriched incineration of municipal solid waste, was discussed. Continuous development of PSA will make significant contributions to a wide range of chemical industries in the near future, be it for oxygen production or other gas separation applications.

Measuring the Oxygen Flow Rate and Purity in an Optimal Portable Oxygen Concentrator Performance with an Air Pressure Sensor

“…[16] A portable oxygen concentrator with continuous and pulse-ow oxygen was used for analysis.The volumeaveraged FIO2 recorded at the trachea was also examined. [17] This work proposes quantifying the e ciency and purity of pressure swing adsorption in producing oxygen vs alternative approaches. [18] A study was conducted on an intelligent system that automatically adjusts oxygen delivery based on patient needs and respiratory conditions.…”

Influence Factors of Pressure Swing Adsorption for Oxygen Production by the Orthogonal Method and the Response Surface Method

“…At present, oxygen production is divided into physical and chemical methods, but chemical methods have certain safety hazards. Therefore, the development of oxygen technology tends to be more towards physical methods, of which the most commonly used is air separation technology [5]. At home and abroad, a variety of air separation oxygen production processes have been developed, such as low-temperature deep-cooling oxygen production, membrane separation oxygen production, pressure swing absorption oxygen production, and coupled air separation oxygen production.…”