OXYGEN is a chemical element with symbol O and atomic number 8. It is a member of the chalcogen group on the periodic table and is a highly reactive nonmetallic element and oxidizing agent that readily forms compounds (notably oxides) with most elements.
By mass, oxygen is the third-most abundant element in the universe, after hydrogen and helium. At standardized conditions for temperature and pressure, two atoms of the element bind to form dioxygen, a diatomic gas that is colorless, odorless, and tasteless, with the formula O
There are basic Three Production technologies for Oxygen Production
Cryogenic Oxygen Nitrogen Plant
A cryogenic plant uses fractional distillation of liquid air technique to separate Oxygen and Nitrogen due to their boiling point difference. The Oxygen and Nitrogen thus obtained is directly filled to a cylinder with the help of Separate pumps.
VPSA Oxygen Plant uses Vacuum Pressures swing adsorption method for separating oxygen from the air.The system operates over ambient temperature with working pressure up to 1 bars(G), higher pressure is available with separate compressor