| 摘要 |
The invention relates to a method for the absorptive outward transfer of NH3 and CH4 out of a gas under high pressure, which at least contains NH3, H2, N2 and CH4, by using a high-boiling, physically active and regenerable solvent, which contains homologues of alkylene glycol-alkyl-ether and can also contain water. According to the invention, the absorbed constituents NH3, H2, N2 and CH4 can be expelled once again from the loaded solvent in at least two additional method steps at different pressures, whereby at least one NH3-rich and at least one CH4-rich gas fraction are withdrawn from the solvent. The method is particularly suited as part of a system for producing ammonia. |
