Apparatus for preparing ultra-pure nitrogen

Details Apparatus for preparing ultra-pure nitrogen Apparatus for preparing ultra-pure nitrogen

1993-08-04

1995-12-26

Warden, Robert J.

Chemical apparatus and process disinfecting, deodorizing, preser

Chemical reactor

With means applying electromagnetic wave energy or...

422189, 473247, 473351, 203 49, B01J 804, C01B 2104, C01B 3118

Patent

active

054785340

ABSTRACT:
Process for preparing ultra-pure nitrogen containing less than 100 ppb (parts per billion) impurities, characterized in that at least the impurities consisting of carbon monoxide (CO) and/or hydrogen (H.sub.2) are removed by passing the gas from which at least one of these two components has to be removed, over a bed of particles including a metallic element namely copper (Cu) and/or ruthenium (Ru) and/or rhodium (Rh) and/or palladium (Pd) and/or osmium (Os) and/or iridium (Ir) and/or platinum (Pt) supported on a particulate support, by the technique of ion exchange and/or by the technique of impregnation. This technique enables to produce ultra-pure nitrogen by using it either with nitrogen obtained by distillation, or air to be distilled as an additional step for the removal of CO.sub.2 and H.sub.2 O. A device for carrying out the process constitutes another object of the invention.

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