Rare Gas Processing
Argon may be recovered from the purge gas of ammonia plants. It can be separated and recovered as liquid argon in a cryogenic process.
If suitable feedstock is available, also other rare gases like He, Ne, Kr and Xe can be recovered.
Example
Customer:
N.V. Nederlandse Staatsmijnen (DSM)
Plant location:
Geleen / Netherlands
Process:
Hydrogen, nitrogen and argon fractionation by medium pressure nitrogen cycle process with nitrogen expansion
Liquid argon extraction
Capacity:
11,850 Nm3/h (10.6 MMSCFD) hydrogen, 2,720 Nm3/h (2.4 MMSCFD) nitrogen
956 Nm3/h (0.9 MMSCFD) L-argon
1,847 Nm3/h (1.7 MMSCFD) aqueous NH3 solution
Scope of work:
General contract (turn-key, lump sum job)
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