What is pressure swing adsorption? (technical principles) /What gases can be separated by pressure swing adsorption technology？

The basic principle of Pressure Swing Adsorption (PSA) is to use the difference of the adsorption characteristics of the gas components on solid materials and the change of adsorption capacity with pressure regulations, to achieve gas separation or purification by periodic pressure switch process.

At present, pressure swing adsorption technology is widely used in air separation to produce O2 and N2, in separation and purification of other gases containing CO, H2, CO2 .,etc (such as furnace gases and industrial exhausts), in petroleum cracking gases like ethylene, ethane and in concentrating gas into CH4. The application boundary is gradually expanding with technological progress in this field.