How to seperate high purity nitrogen,oxygen and argon from atmospheric air?

This paper presents the latest technology in bulk production of high purity of nitrogen, oxygen & argon from air, and analytical process design for a 1250 ton / day plant and comparing the data with actual existing plants. The liquefaction of air to produce oxygen was the first engineering application of cryogenics1 and was initially used around the beginning of this century. Today, four-quarters of a century later, it is useful to conduct a review of air separation plant design. This paper summarizes the considerations for analytical design, & materials of construction for air plant design.

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