Patent ID: 11945721
Assignee: AIR PRODUCTS AND CHEMICALS, INC.
Field: Chemical engineering (Chemistry)
Classification: CPC C  B  F | IPC B  C

Claim 0:
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.