The invention relates to a process for the absorptive separation of NH3
and CH4 from a gas under high pressure, which at least contains NH3,
H2, N2 and CH4, using a high-boiling, physically
acting and regenerable solvent which contains homologues of alkylene glycol-alkyl-ether
and which also may contain water, the absorbed components NH3, H2,
N2 and CH4 being separated from the laden solvent in at least
two further process steps at different pressure rates, thereby withdrawing at least
one NH3-rich and at least one CH4-rich gas fraction from
the solvent. This process is particularly suitable to be incorporated as unit in
an ammonia production plant.
