Carbon dioxide purification apparatus
    48.
    发明授权
    Carbon dioxide purification apparatus 有权
    二氧化碳净化装置

    公开(公告)号:US08216351B2

    公开(公告)日:2012-07-10

    申请号:US12632297

    申请日:2009-12-07

    IPC分类号: B01D53/14 B01D53/02

    摘要: An Apparatus for purifying a feed stream containing carbon dioxide in which 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: 用于纯化含有二氧化碳的进料流的装置,其中进料流在被压缩和干燥之后被部分冷却,然后用于再沸汽提塔。 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。