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    Method of recovering carbon dioxide from a synthesis gas stream
    7.
    发明授权
    Method of recovering carbon dioxide from a synthesis gas stream 有权
    从合成气流中回收二氧化碳的方法

    公开(公告)号：US07632476B2

    公开(公告)日：2009-12-15

    申请号：US11370984

    申请日：2006-03-09

    申请人： Minish Mahendra Shah ,  Raymond Francis Drnevich ,  Aqil Jamal

    发明人： Minish Mahendra Shah ,  Raymond Francis Drnevich ,  Aqil Jamal

    IPC分类号： B01D53/14 ,  C07C27/06

    CPC分类号： C01B32/50 ,  Y02C10/06

    摘要： A method of recovering carbon dioxide from a synthesis gas stream generated within a synthesis gas facility. After the synthesis gas stream is passed through at least one process heat exchanger of the steam generation system located downstream of the water-gas shift reactor, the temperature of the synthesis gas stream is increased while simultaneously adding steam to the synthesis gas stream. Thereafter, the synthesis gas stream is added to an absorption system having an absorption zone utilizing a solvent to absorb the carbon dioxide and a regeneration zone to disengage the carbon dioxide from the solvent and thereby regenerate the solvent. Heat is transferred from the synthesis gas stream to the regeneration zone to promote disengagement of the carbon dioxide from the steam and such that between about 40 percent and about 90 percent of the carbon dioxide originally present in the synthesis gas stream is recovered.

    摘要翻译： 从合成气设备内产生的合成气流中回收二氧化碳的方法。 在合成气流通过位于水煤气变换反应器下游的蒸汽发生系统的至少一个工艺热交换器之后，合成气流的温度升高，同时向合成气流中加入蒸汽。 然后，将合成气流加入具有吸收区的吸收系统，利用溶剂吸收二氧化碳和再生区，使二氧化碳与溶剂脱离，从而再生溶剂。 热量从合成气流转移到再生区，以促进二氧化碳与蒸汽的分离，从而回收最初存在于合成气流中的约40％至约90％的二氧化碳。

    Oxygen separation method using a ceramic membrane unit
    10.
    发明授权
    Oxygen separation method using a ceramic membrane unit 失效
    氧分离法采用陶瓷膜单元

    公开(公告)号：US06623714B2

    公开(公告)日：2003-09-23

    申请号：US09871956

    申请日：2001-06-04

    申请人： Eric Hunter Shreiber ,  Edward Paul Eardley ,  Vijayaraghavan Srinivasan ,  Bart Antonie van Hassel ,  Minish Mahendra Shah

    发明人： Eric Hunter Shreiber ,  Edward Paul Eardley ,  Vijayaraghavan Srinivasan ,  Bart Antonie van Hassel ,  Minish Mahendra Shah

    IPC分类号： B01D5322

    CPC分类号： B01D53/228 ,  B01D53/22 ,  C01B13/0251 ,  C01B2210/0046 ,  C01B2210/0062 ,  Y02P20/129

    摘要： A method of separating oxygen using a ceramic membrane unit having one or more ceramic membranes, preferably formed of a mixed conducting ceramic, for instance, a perovskite, capable of conducting both oxygen ions and electrons. Oxygen is separated within the ceramic membrane unit under impetus of compressing an incoming oxygen containing feed. The compressor used in the compression is powered by the work of expansion produced by expanding a process stream composed of at least a portion of the retentate produced in the ceramic membrane unit. Prior to expansion, the process stream is cooled to allow the use of less expensive materials in expanders used in the expansion. As a result, expansion of the process stream alone is insufficient to meet the power requirements involved in the compression. Interstage expansion with reheating is used to make up for the power deficit.

    摘要翻译： 使用具有一个或多个陶瓷膜的陶瓷膜单元的分离方法，该陶瓷膜优选由能够导电氧离子和电子的混合导电陶瓷，例如钙钛矿形成。 在压缩进入含氧进料的动力下，陶瓷膜单元内的氧气分离。 在压缩机中使用的压缩机由通过膨胀由陶瓷膜单元中产生的至少一部分滞留物组成的工艺流而产生的膨胀作用来提供动力。 在膨胀之前，将工艺流冷却以允许在膨胀器中使用的膨胀器中使用较便宜的材料。 因此，单独的工艺流的扩展不足以满足压缩中涉及的功率要求。 再加热阶段的扩张用来弥补电力赤字。