VERFAHREN ZUR ABTRENNUNG VON KOHLENMONOXID UND SAUERGASEN AUS EINEM KOHLENMONOXIDHALTIGEM FLUIDSTROM

    公开(公告)号:EP3628393A1

    公开(公告)日:2020-04-01

    申请号:EP19204497.2

    申请日:2017-02-02

    申请人: BASF SE

    IPC分类号: B01D53/14

    摘要: Es wird ein Verfahren zur Abtrennung von C 5 -C 8 -Kohlenwasserstoffen und Sauergasen aus einem Fluidstrom beschrieben, bei dem man
    a) den Fluidstrom in einer Absorptionszone mit einem Absorptionsmittel in Kontakt bringt, das mindestens ein Amin enthält, wobei man einen entsäuerten Fluidstrom und ein mit Sauergasen beladenes Absorptionsmittel erhält,
    b) das beladene Absorptionsmittel in einem ersten Wärmetauscher erwärmt und in eine Dekompressionszone auf einen Druck von 5 bis 10 bar entspannt, wobei man eine C 5 -C 8 -Kohlenwasserstoffe enthaltende Gasphase und ein Kohlenwasserstoff-abgereichertes beladenes Absorptionsmittel erhält,
    c) das Kohlenwasserstoff-abgereicherte beladene Absorptionsmittel in einem optionalen zweiten Wärmetauscher erwärmt und in einen Stripper leitet, in dem die Sauergase bei einem Druck von 1 bis 2,5 bar durch Zufuhr von Wärme zumindest teilweise freigesetzt werden, wobei man ein regeneriertes Absorptionsmittel und einen Sauergas enthaltenden Strom erhält, und
    d) das regenerierte Absorptionsmittel in die Absorptionszone zurückführt,
    wobei man als Heizmedium im zweiten Wärmetauscher das regenerierte Absorptionsmittel verwendet und als Heizmedium im ersten Wärmetauscher das regenerierte Absorptionsmittel nach dem Passieren des zweiten Wärmetauschers verwendet, und die im ersten Wärmetauscher und im zweiten Wärmetauscher übertragenen relativen Wärmemengen so gewichtet, dass die C 5 -C 8 -Kohlenwasserstoffe enthaltende Gasphase 50 bis 97 Vol.-% Sauergase enthält.

    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS
    26.
    发明授权
    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS 有权
    从流体中回收二氧化碳的方法,特别是从合成气中回收二氧化碳

    公开(公告)号:EP2435540B1

    公开(公告)日:2018-04-04

    申请号:EP10723987.3

    申请日:2010-05-25

    IPC分类号: C10K1/08

    摘要: A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapor entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.

    VERFAHREN ZUR ABTRENNUNG VON SAUERGASEN AUS EINEM WASSERHALTIGEN FLUIDSTROM
    27.
    发明公开
    VERFAHREN ZUR ABTRENNUNG VON SAUERGASEN AUS EINEM WASSERHALTIGEN FLUIDSTROM 有权
    用于气体从酸性水汽含有流体分权

    公开(公告)号:EP2892633A1

    公开(公告)日:2015-07-15

    申请号:EP13750876.8

    申请日:2013-08-19

    申请人: BASF SE

    IPC分类号: B01D53/14

    摘要: A method for separating acid gases from an aqueous flow of fluid is described, according to which method a) the aqueous flow of fluid is brought into contact in an absorption area with an absorbent which contains at least one amine, wherein a deacidified flow of fluid and an absorbent charged with acid gases are obtained; b) the deacidified flow of fluid is brought into contact in a washing area with an aqueous washing fluid in order to transfer, at least partially, carried amine into the washing fluid, wherein a deaminated, deacidified flow of fluid and an amine-charged washing fluid are obtained; c) the deaminated, deacidified flow of fluid is cooled downstream of the washing area, wherein an absorber top condensate is condensed out of the deaminated, deacidified flow of fluid; d) the charged absorbent is guided into a desorption area in which the acid gases are at least partially released, wherein a regenerated absorbent and desorbed acid gases are obtained; e) the regenerated absorbents are guided back into the absorption area in order to form an absorbent cycle; f) the amine-charged washing fluid and the absorber top condensate are introduced into the absorbent cycle; and g) the desorbed acid gases are guided through a reinforcement area and the acid gases coming out of the top of the reinforcement area are cooled, in order to condense a desorber top condensate out of the acid gases, which desorber top condensate is partially guided back into the reinforcement area and is partially guided out of the method. The method allows an efficient retention of amines from the treated flows of fluid while maintaining the water balance of the acid gas removal installation.

    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS
    30.
    发明公开
    PROCESS FOR RECOVERY OF CARBON DIOXIDE FROM A FLUID STREAM, IN PARTICULAR FROM SYNGAS 有权
    用于从合成气OBTAINING二氧化碳流体流动,尤其是

    公开(公告)号:EP2435540A1

    公开(公告)日:2012-04-04

    申请号:EP10723987.3

    申请日:2010-05-25

    IPC分类号: C10K1/08

    摘要: A process for removing carbon dioxide from a fluid comprises the steps of: (a) treating the fluid by bringing it into countercurrent contact with a liquid absorbent in a first absorption zone and thereafter in a second absorption zone to absorb at least part of the carbon dioxide contained in the fluid into the absorbent; (b) depressurizing the loaded absorbent to release a first stream of carbon dioxide and yield a partially regenerated absorbent; (c) recycling a first stream of the partially regenerated absorbent into the first absorption zone; (d) heating a second stream of the partially regenerated absorbent to release a second stream of carbon dioxide and yield a regenerated absorbent; (e) recycling the regenerated absorbent into the second absorption zone; (f) condensing water vapor entrained in the second stream of carbon dioxide by cooling the second stream of carbon dioxide and transferring at least part of the heat recovered to the partially regenerated absorbent by indirect heat exchange. The invention provides a two-stage carbon dioxide recovery process wherein the overall energy required for carbon dioxide recovery is reduced and/or wherein at least part of the carbon dioxide is recovered at a pressure higher than atmospheric pressure so as to reduce the energy required for compression of the carbon dioxide, e.g., for sequestration. Also disclosed is a plant for removing carbon dioxide from a fluid.