| 摘要 |
The present invention relates to a process for purifying a syngas of the CO/H<SUB>2 </SUB>or N<SUB>2</SUB>/H<SUB>2 </SUB>type, which consists in removing CO<SUB>2 </SUB>and possibly other gaseous impurities (water, etc.) before the gas undergoes a cryogenic process. These impurities are adsorbed by the gas stream to be purified passing over an NaLSX-type zeolite and then desorbed during a regeneration step which may be performed by raising the temperature (TSA) and/or reducing the pressure (PSA or VSA).
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