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    Production of moderate purity carbon dioxide streams
    1.
    发明申请
    Production of moderate purity carbon dioxide streams 审中-公开
    生产中等纯度二氧化碳流

    公开(公告)号：US20070148070A1

    公开(公告)日：2007-06-28

    申请号：US11315065

    申请日：2005-12-23

    申请人： Shrikar Chakravarti ,  Amitabh Gupta ,  Kenneth Burgers

    发明人： Shrikar Chakravarti ,  Amitabh Gupta ,  Kenneth Burgers

    IPC分类号： B01D53/14

    CPC分类号： B01D53/1456 ,  Y02C10/06

    摘要： A gaseous product stream having a predetermined carbon dioxide content of 10-95 mol. % is produced from a gaseous feed stream containing 3-20 mol. % carbon dioxide by converting a portion of the feed stream to a purified stream containing 95-99.9 mol. % (dry basis) carbon dioxide and adding the purified stream to the remaining portion of the feed stream. Alternately, a portion of the purified stream is stored and added subsequently in response to fluctuating demand for the product stream.

    摘要翻译： 具有10-95mol的预定二氧化碳含量的气态产物流。 ％由含有3-20mol的气态进料流产生。 通过将一部分进料流转化成含有95-99.9mol的纯化物流来生成二氧化碳。 ％（干基）二氧化碳，并将纯化的流加入进料流的剩余部分。 或者，一部分纯化的流被储存并随后响应于产品流的波动需求而添加。

    Carbon dioxide recovery plant
    4.
    发明授权
    Carbon dioxide recovery plant 有权
    二氧化碳回收厂

    公开(公告)号：US06592829B2

    公开(公告)日：2003-07-15

    申请号：US09774031

    申请日：2001-01-31

    申请人： Shrikar Chakravarti ,  Amitabh Gupta

    发明人： Shrikar Chakravarti ,  Amitabh Gupta

    IPC分类号： B01D5360

    CPC分类号： B01D53/62 ,  B01D53/1418 ,  B01D53/1475 ,  B01D2257/504 ,  C01B32/50 ,  Y02C10/04 ,  Y02C10/06 ,  Y02P20/152

    摘要： A system for recovering absorbate such as carbon dioxide from an oxygen containing mixture wherein carbon dioxide is concentrated in an alkanolamine containing absorption fluid, oxygen is separated from the absorption fluid, the resulting fluid is heated, and carbon dioxide is steam stripped from the absorption fluid and recovered.

    摘要翻译： 从含氧混合物中回收吸收剂如二氧化碳的系统，其中二氧化碳浓缩在含有链烷醇胺的吸收流体中，氧从吸收流体中分离出来，所得流体被加热，二氧化碳从吸收流体中蒸汽汽提 并恢复。

    Carbon dioxide recovery at high pressure
    5.
    发明授权
    Carbon dioxide recovery at high pressure 有权
    高压二氧化碳回收

    公开(公告)号：US06497852B2

    公开(公告)日：2002-12-24

    申请号：US09742451

    申请日：2000-12-22

    申请人： Shrikar Chakravarti ,  Amitabh Gupta

    发明人： Shrikar Chakravarti ,  Amitabh Gupta

    IPC分类号： B01D5362

    CPC分类号： B01D53/1475 ,  B01D53/1418 ,  Y02C10/06

    摘要： Carbon dioxide is recovered from a feed stream whose pressure is up to 30 psia by preferentially absorbing carbon dioxide from said feed stream into a liquid absorbent fluid, pressurizing and heating the resulting stream to a pressure sufficient to enable the stream to reach the top of the stripper at a pressure of 35 psia or greater, and stripping carbon dioxide from said stream in a stripper operating at a pressure of 35 psia or greater and recovering from said stripper a gaseous carbon dioxide product stream having a pressure of 35 psia or greater.

    摘要翻译： 从压力高达30psia的进料流中回收二氧化碳，优先将二氧化碳从所述进料流中吸收到液体吸收剂流体中，将所得流加压和加热到足以使流体到达顶部的压力 汽提器，压力为35psia或更大，并且在35psia或更大的压力下在汽提器中从所述物流中汽提二氧化碳，并从所述汽提器中回收压力为35psia或更大的气态二氧化碳产物流。

    Carbon dioxide recovery from an oxygen containing mixture
    8.
    发明授权
    Carbon dioxide recovery from an oxygen containing mixture 有权
    从含氧混合物中回收二氧化碳

    公开(公告)号：US06174506B1

    公开(公告)日：2001-01-16

    申请号：US09329279

    申请日：1999-06-10

    申请人： Shrikar Chakravarti ,  Amitabh Gupta

    发明人： Shrikar Chakravarti ,  Amitabh Gupta

    IPC分类号： B01D5362

    CPC分类号： B01D53/1418 ,  C01B32/50 ,  Y02C10/04 ,  Y02C10/06 ,  Y02P20/152

    摘要： A process for recovering carbon dioxide from a gas containing both carbon dioxide and oxygen wherein a carbon dioxide and oxygen containing gas is first contacted with an alkanolamine solution to produce an alkanolamine loaded with carbon dioxide and oxygen, the oxygen is separated from the absorption solution, such as by stripping with a scavenging gas, such as the carbon dioxide containing fluid obtained from the separation of carbon dioxide from the alkanolamine solution or nitrogen, prior to any heating of the absorption solution, and carbon dioxide is steam stripped from the absorption solution and recovered. By stripping the oxygen out of the alkanolamine solution, oxidative degradation of the alkanolamine can be reduced.

    摘要翻译： 一种从含有二氧化碳和氧气的二氧化碳中回收二氧化碳的方法，其中首先使二氧化碳和含氧气体与链烷醇胺溶液接触以产生负载有二氧化碳和氧气的链烷醇胺，将氧与吸收溶液分离， 例如在吸收溶液的任何加热之前通过用清除气体例如含有二氧化碳的流体从链烷醇胺溶液或氮气中分离出二氧化碳的流体汽提，并且二氧化碳是从吸收溶液中汽提的， 恢复。 通过从烷醇胺溶液中除去氧气，可以降低链烷醇胺的氧化降解。