Fremgangsmåter for å separere NH3 fra en blanding som inneholder NH3, CO2 og H2O

摘要

The invention relates to a process for separating NH₃ from a mixture containing NH₃, CO₂ and H₂O which comprises an NH₃ rectification step carried out in a NH₃ separation device to which one or more streams containing NH₃, CO₂ and H₂O including the mixture, are supplied, with a stream consisting substantially of gaseous NH₃ being formed in the NH₃ separation device, separated from the mixture and discharged. In the process according to the invention a condensation step is carried out on at least one of the stream consisting substantially of gaseous NH₃ or the one or more streams containing NH₃, CO₂ and H₂O supplied to the NH₃ separation device, in which at least a part of the existing CO₂ is converted to a liquid phase.