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    PROCESS FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM MIXTURES CONTAINING AMMONIA,CARBON DIOXIDE AND WATER
    2.
    发明专利
    PROCESS FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM MIXTURES CONTAINING AMMONIA,CARBON DIOXIDE AND WATER 未知

    公开(公告)号：IN152909B

    公开(公告)日：1984-04-28

    申请号：IN340CA1980

    申请日：1980-03-24

    Applicant: STAMICARBON

    Inventor： GOORDEN JOSEPHUS JOHANNES PETR

    IPC: C01C1/02 ,  B01D19/00 ,  C01B32/50 ,  C01C1/10 ,  C01C1/12 ,  F25J3/02 ,  B01D53/00 ,  B01D53/14 ,  C01B31/20 ,  C01C1/00

    Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. The separation is effected by maintaining a system pressure differential between the ammonia and carbon dioxide separation zones, or adding diluting water to the carbon dioxide separation zone. The efficiency of the separation is enhanced by introducing a carbon dioxide containing gaseous phase, and preferably an excess of an inert gas, into the bottom of the ammonia separation zone.

    METHOD OF OBTAINING THE AMMONIA AND CARBON DIOXIDE FROM THE MIXTURES CONTAINING AMMONIUM,CARBON DIOXIDE AND WATER
    4.
    发明专利
    METHOD OF OBTAINING THE AMMONIA AND CARBON DIOXIDE FROM THE MIXTURES CONTAINING AMMONIUM,CARBON DIOXIDE AND WATER 未知

    公开(公告)号：CS221545B2

    公开(公告)日：1983-04-29

    申请号：CS261580

    申请日：1980-04-15

    Applicant: STAMICARBON

    Inventor： GOORDEN JOSEPHUS JOHANNES PETR

    IPC: C01C1/02 ,  B01D19/00 ,  C01B32/50 ,  C01C1/10 ,  C01C1/12 ,  F25J3/02

    Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. The separation is effected by maintaining a system pressure differential between the ammonia and carbon dioxide separation zones, or adding diluting water to the carbon dioxide separation zone. The efficiency of the separation is enhanced by introducing a carbon dioxide containing gaseous phase, and preferably an excess of an inert gas, into the bottom of the ammonia separation zone.

    PROCESS FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM MIXTURES CONTAINING AMMONIA, CARBON DIOXIDE AND WATER
    5.
    发明专利
    PROCESS FOR THE SEPARATION OF AMMONIA AND CARBON DIOXIDE FROM MIXTURES CONTAINING AMMONIA, CARBON DIOXIDE AND WATER 未知

    公开(公告)号：DE3061735D1

    公开(公告)日：1983-03-03

    申请号：DE3061735

    申请日：1980-03-29

    Applicant: STAMICARBON

    Inventor： GOORDEN JOSEPHUS JOHANNES PETR

    IPC: C01C1/02 ,  B01D19/00 ,  C01B32/50 ,  C01C1/10 ,  C01C1/12 ,  F25J3/02 ,  C01B31/20

    Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. The separation is effected by maintaining a system pressure differential between the ammonia and carbon dioxide separation zones, or adding diluting water to the carbon dioxide separation zone. The efficiency of the separation is enhanced by introducing a carbon dioxide containing gaseous phase, and preferably an excess of an inert gas, into the bottom of the ammonia separation zone.

    PROCESS FOR SEPARATING AMMONIA AND CARBON DIOXIDE FROM THE MIXTURE CONSISTING OF AMMONIA, CARBON DIOXIDE AND WATER
    7.
    发明专利
    PROCESS FOR SEPARATING AMMONIA AND CARBON DIOXIDE FROM THE MIXTURE CONSISTING OF AMMONIA, CARBON DIOXIDE AND WATER 未知

    公开(公告)号：YU94480A

    公开(公告)日：1983-01-21

    申请号：YU94480

    申请日：1980-04-07

    Applicant: STAMICARBON

    Inventor： GOORDEN JOSEPHUS JOHANNES PETR

    IPC: B01D19/00 ,  C01B32/50 ,  C01C1/10 ,  C01C1/02 ,  C01C1/12 ,  F25J3/02 ,  B01D53/14 ,  C01B2/00

    Abstract: An improved process for the separate recovery of substantially pure ammonia and substantially pure carbon dioxide from mixtures containing ammonia and carbon dioxide, and possibly water, such as are obtained as by-products in the manufacture of melamine from urea or the synthesis of urea from ammonia and carbon dioxide. The by-product mixture is introduced into a process loop having an ammonia separation zone, a carbon dioxide separation zone and a desorption zone, the zone to which the mixture is initially fed being dependent upon its composition. The separation is effected by maintaining a system pressure differential between the ammonia and carbon dioxide separation zones, or adding diluting water to the carbon dioxide separation zone. The efficiency of the separation is enhanced by introducing a carbon dioxide containing gaseous phase, and preferably an excess of an inert gas, into the bottom of the ammonia separation zone.

    8.
    发明专利
    未知

    公开(公告)号：NO801366L

    公开(公告)日：1980-11-10

    申请号：NO801366

    申请日：1980-05-08

    Applicant: STAMICARBON

    Inventor： GOORDEN JOSEPHUS JOHANNES PETR

    IPC: C01C1/08 ,  C01C1/12 ,  C02F1/02 ,  C02F1/20 ,  C02F1/28 ,  C07C67/00 ,  C07C239/00 ,  C07C273/04 ,  C07C273/10 ,  C07D251/60 ,  C02F

    Abstract: An improved process for the removal of urea from urea-containing waste water by hydrolysis and desorption of the ammonia and carbon dioxide thus formed. Urea-containing waste water is treated in a process for the separation of ammonia and carbon dioxide from mixtures thereof, which process has (a) an ammonia separation zone wherefrom ammonia, substantially free of carbon dioxide and water, is obtained, (b) a carbon dioxide separation zone wherefrom carbon dioxide, substantially free of ammonia and water is obtained, and (c) a desorption zone wherefrom water, substantially free of carbon dioxide and ammonia is obtained. The urea is substantially completely hydrolyzed and the ammonia and carbon dioxide produced thereby can be recovered.

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