What is meant by pressure swing adsorption?
Pressure swing adsorption (PSA) is a technique used to separate some gas species from a mixture of gases (typically air) under pressure according to the species’ molecular characteristics and affinity for an adsorbent material. The process then swings to low pressure to desorb the adsorbed gas.
When was pressure swing adsorption invented?
1970s
10.3 Vacuum pressure swing adsorption technology. Pressure swing adsorption systems for oxygen production were first used in the 1970s.
What is mean by PSA oxygen plant?
Pressure swing adsorption
Pressure swing adsorption (PSA) oxygen generating plants are a source of medical-grade oxygen. This document provides technical specifications as the minimum requirements that a PSA Oxygen Plant must meet for use for the administration of medical-grade oxygen.
What is the difference between absorption and adsorption?
The main difference between absorption and adsorption is that absorption is the process in which a fluid dissolves by a liquid or a solid. In adsorption, the molecules are held loosely on the surface of the adsorbent and can be easily removed.
Why vacuum swing adsorption technology is more effective?
PCI’s unique Vacuum Swing Adsorption (VSA) technology has several advantages over the more commonly used PSA process: Low operating pressure minimizes sieve (the sieve removes nitrogen from the air) dusting, because the pressure swing is at an order of magnitude lower, which also results in lower operating costs.
What is swing adsorption technology Upsc?
Pressure swing adsorption or PSA is a process that separates single gases from a gas mixture. Specific adsorbent materials (e.g., zeolites, molecular sieves, activated carbon, etc.) are used as a trap, preferentially adsorbing the target gas species at high pressure.
What is LMO tank?
The LMO tank is a double walled vacuum insulated vessel (Maximum Allowable Working Pressure of 16 to 18 Kg/square cm with certified standards as per ASME/EN/Equivalent – ASME Sec. VIII/EN-13458-2/Equivalent), the capacity of which can ranges from 2 Kilo Liters to 20 Kilo Liters.
How zeolite works in oxygen concentrator?
An oxygen concentrator uses molecular sieves composed by zeolites to adsorb the atmospheric nitrogen and then venting the nitrogen. This leaves oxygen as the primary gas remaining. At high pressure, the porous zeolite adsorbs large quantities of nitrogen, due to its large surface area and chemical character.