REGENERATION OF ADSORBENT BEDS

摘要

A method for regenerating a nickel-based catalytic adsorbent without using hydrogen in each cycle. Depending upon the configuration of the adsorb ent bed, one or more interim regenerations, comprising the steps of heating the bed,flowing ultra-high purity nitrogen without hydrogen through the bed to remove adsorbed species, followed by cooling the bed, can be used to prepare the ad sorbent bed for removal of unwanted species contained in cyrogenically produced nitr ogenin order to make UHP nitrogen.