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.
N.V. Nederlandse Staatsmijnen (DSM)
Geleen / Netherlands
Hydrogen, nitrogen and argon fractionation by medium pressure nitrogen cycle process with nitrogen expansion
Liquid argon extraction
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)