CPC C01B 3/56 (2013.01) [B01D 53/0462 (2013.01); B01D 53/047 (2013.01); B01J 20/3458 (2013.01); C01B 3/506 (2013.01); B01D 2256/16 (2013.01); B01D 2257/102 (2013.01); B01D 2257/104 (2013.01); B01D 2257/11 (2013.01); B01D 2257/502 (2013.01); B01D 2257/504 (2013.01); B01D 2257/7025 (2013.01); B01D 2257/80 (2013.01); C01B 2203/042 (2013.01)] | 6 Claims |
1. A process for the purification of a hydrogen feed stream comprising hydrogen, oxygen, and one or more impurities selected from the group consisting of nitrogen, argon, methane, carbon monoxide, carbon dioxide, and water, the process comprising:
cooling the hydrogen feed stream to produce a cooled hydrogen stream;
combining a liquid hydrogen stream with the cooled hydrogen stream to produce a combined cooled hydrogen stream;
passing the combined cooled hydrogen stream through an online adsorber at a temperature below 80 K to adsorb the one or more impurities and produce a pure hydrogen stream and a loaded adsorber; and
passing an inert regeneration gas stream through the loaded adsorber at a temperature between 0° C. and 50° C. and pressure to regenerate the loaded adsorber and produce a spent regeneration gas stream enriched in oxygen.
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