Patent ID: 7407532

Claim:
Process for separating NH 3 from a mixture containing NH 3 , CO 2 and H 2 O which comprises an NH 3 rectification step carried out in an NH 3 separation device to which one or more streams containing NH 3 , CO 2 and H 2 O, including the mixture, are fed from elsewhere in the process, with a stream consisting substantially of gaseous NH 3 being formed in the NH 3 separation device, separated from the mixture and discharged, wherein a condensation step is carried out in a condenser separate from the NH 3 separation device on at least one of the stream consisting substantially of gaseous NH 3 or the one or more streams containing NH 3 , CO 2 and H 2 O supplied to the NH 3 separation device, in which at least a part of the existing CO 2 is converted to a liquid phase.