Air separation unit
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(Redirected from ASU)
An air separation unit, or ASU, is a facility designed to distill pure gases from air.[1]
Air separation facilities use either a cryogenic or non-cryogenic process. Cryogenic plants use very low temperatures to produce high-purity nitrogen, oxygen or other gases, while non-cryogenic plants use near-ambient temperatures to distill low-purity gases (e.g., 98% oxygen-free nitrogen, or 93% nitrogen-free oxygen).[2]
