Method for separating trace components from a nitrogen-rich...

Details Method for separating trace components from a nitrogen-rich... Method for separating trace components from a nitrogen-rich...

F - Mech Eng,Light,Heat,Weapons

25

J

F25J 3/02 (2006.01) C01B 21/04 (2006.01) F25J 3/08 (2006.01)

Patent

CA 2597328

The invention relates to a method for separating hydrogen, helium and/or neon from a liquid fraction that is rich in nitrogen and has a pressure of at least 10 bar. According to the invention, the liquid fraction (29) that is rich in nitrogen is expanded (e) and subjected to a phase separation (D), said expansion taking place at a pressure that permits the separation of hydrogen, helium and/or neon (30) leaving a residual content of less than 20 ppmV.

L'invention concerne un procédé pour séparer de l'hydrogène, de l'hélium et/ou du néon d'une fraction liquide riche en azote et soumise à une pression d'au moins 10 bars. Selon l'invention, la fraction liquide (29) riche en azote est détendue (e) et soumise à une séparation de phases (D), la détente étant réalisée jusqu'à une pression qui permet la séparation de l'hydrogène, de l'hélium et/ou du néon (30), hormis des restes inférieurs à 20 ppmV.

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