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    Carbon dioxide purification method
    2.
    发明申请
    Carbon dioxide purification method 有权
    二氧化碳净化方法

    公开(公告)号：US20070231244A1

    公开(公告)日：2007-10-04

    申请号：US11395143

    申请日：2006-04-03

    申请人： Minish Shah ,  Henry Howard

    发明人： Minish Shah ,  Henry Howard

    IPC分类号： C01B31/20

    CPC分类号： F25J3/0266 ,  C01B32/50 ,  F25J3/0209 ,  F25J3/0223 ,  F25J2200/02 ,  F25J2200/70 ,  F25J2205/02 ,  F25J2205/04 ,  F25J2205/66 ,  F25J2210/04 ,  F25J2210/70 ,  F25J2220/82 ,  F25J2230/30 ,  F25J2230/32 ,  F25J2230/80 ,  F25J2240/90 ,  F25J2245/02 ,  F25J2270/02 ,  Y02C10/12 ,  Y02P20/152

    摘要： Method of purifying a feed stream containing carbon dioxide wherein the feed stream after having been compressed and dried is partly cooled and then used to reboil a stripping column. Thereafter, the feed stream is further cooled and expanded to a lower operational temperature of the stripping column. A carbon dioxide product stream composed of the liquid column bottoms of the stripping column is expanded at one or more pressures to generate refrigeration, then fully vaporized within the main heat exchanger and compressed by a compressor to produce a compressed carbon dioxide product. Refrigeration is recovered in the main heat exchanger from a column overhead stream extracted from the stripping column within the main heat exchanger either directly or indirectly by auxiliary processing in which carbon dioxide is further separated and optionally recycled back to the main compressor used in compressing the feed stream.

    摘要翻译： 纯化含有二氧化碳的进料流的方法，其中将经过压缩和干燥后的进料流部分冷却，然后用于重新沸腾汽提塔。 此后，将进料流进一步冷却并膨胀至汽提塔的较低操作温度。 由汽提塔的液柱底部组成的二氧化碳产物流在一个或多个压力下膨胀以产生制冷，然后在主热交换器内完全蒸发并被压缩机压缩以产生压缩的二氧化碳产品。 在主热交换器中，从主热交换器中从汽提塔提取的塔塔顶馏分塔直接或间接地通过辅助处理回收制冷，其中进一步分离二氧化碳并任选地再循环回压缩进料中使用的主压缩机 流。

    Method of recovering carbon dioxide from a synthesis gas stream
    4.
    发明申请
    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：US20070212286A1

    公开(公告)日：2007-09-13

    申请号：US11370984

    申请日：2006-03-09

    申请人： Minish Shah ,  Raymond Drnevich ,  Aqil Jamal

    发明人： Minish Shah ,  Raymond Drnevich ,  Aqil Jamal

    IPC分类号： B01D53/14

    CPC分类号： C01B32/50 ,  Y02C10/06

    摘要： A method of recovering carbon dioxide from a synthesis gas stream generated within a facility having a synthesis gas reactor, a water-gas shift reactor and a steam generation system for generating steam for the synthesis gas reactor and for export. 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. The temperature of the synthesis gas stream can be increased and steam can be added thereto by mixing superheated steam with the synthesis gas stream. Alternatively, a synthesis gas stream can be introduced into a saturator utilizing a water stream that undergoes indirect heat exchange with a low pressure steam stream.

    摘要翻译： 在具有合成气反应器，水煤气变换反应器和用于产生用于合成气反应器的蒸汽并用于出口的蒸汽发生系统的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，从而回收原始存在于合成气流中的约40％至约90％的二氧化碳。 可以增加合成气流的温度，并通过将过热蒸汽与合成气流混合来加入蒸汽。 或者，可以使用与低压蒸汽流进行间接热交换的水流将合成气流引入饱和器。