If your requirements for pure nitrogen are less than plant capacity, consider a nitrogen liquefier. This solution would liquefy a surplus of production for back up or for sale.
If your required oxygen purity is above 95% of oxygen, consider a cryogenic plant instead of PSA units. A cryogenic installation would allow you to make pure gas nitrogen under pressure from the cold box as well as 5-7% of the total product may be
If you want to make argon for sale or for your own use and your ASU location is in the USA or in Europe, consider a cryogenic purification unit instead of hydrogen-based purification.
If you need more than 100 mtpd oxygen, consider having an argon recovery unit for this size plant. The cost of argon continues to rise and there is a shortage in Argon supply market.
