Sieve (CMS) is the main stream adsorbent for PSA nitrogen gas generators.
It is a differential diffusion rate system based on the fact that
the oxygen molecule is smaller than the nitrogen molecule.
A special CMS adsorbs oxygen gas, carbon dioxide gas, moisture and
so on in compressed air in a short period of time & compressed
nitrogen gas is obtained at the outlet. When the pressure is removed
to the atmospheric or vacuum level, CMS, which has adsorbed oxygen
gas and others easily desorbs them and is regenerated.
When the above two operations are done alternately between two adsorpton
columns, nitrogen gas can be separated continuously from the air.
Veecon IPA offers
non-cryogenic pressure swing adsorption (PSA) based on-site nitrogen
plant, in collaboration with Kuraray Chemicals Ltd., Japan, a world
renowned global company.
Since 1940 intensive
research and development efforts have ensured that high purity nitrogen
(99.99% N2 + Ar) gas separation directly from air. Further nitrogen
purification is done by catalytic purification.