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    Lean reflux process for high recovery of ethane and heavier components
    15.
    发明授权
    Lean reflux process for high recovery of ethane and heavier components 有权
    精益回流过程，用于乙烷和较重组分的高回收率

    公开(公告)号：US06244070B1

    公开(公告)日：2001-06-12

    申请号：US09454272

    申请日：1999-12-03

    申请人： Rong-Jwyn Lee ,  Jame Yao ,  Jong Juh Chen ,  Douglas G. Elliot

    发明人： Rong-Jwyn Lee ,  Jame Yao ,  Jong Juh Chen ,  Douglas G. Elliot

    IPC分类号： F25J300

    CPC分类号： F25J3/0238 ,  F25J3/0209 ,  F25J3/0233 ,  F25J2200/04 ,  F25J2200/70 ,  F25J2200/78 ,  F25J2205/04 ,  F25J2210/06 ,  F25J2230/08 ,  F25J2230/60 ,  F25J2235/60 ,  F25J2240/02 ,  F25J2245/02 ,  F25J2270/88 ,  F25J2270/90

    摘要： A simple, efficient, and cost effective process for separating components of a feed gas, e.g., containing methane and heavier hydrocarbons has been devised. First, feed gas is condensed to provide a vapor component and a liquid component. The vapor component is divided into at least a first, major portion a second portion, and a remaining portion. The second portion is directed to a lean reflux absorber, and the remaining portion is condensed and fed to the top of the lean reflux absorber. A bottom fluid stream, generally a liquid intermediate product, is recovered from the bottom of the lean reflux absorber, and lean vapor is recovered from the top of the lean reflux absorber. The liquid component, the first, major portion of the first vapor component, the liquid product from the bottom of the lean reflux absorber, and the lean vapor from the top of the lean reflux absorber are all fed to different feed points on a cryogenic distillation column. An optional cold side reboiler may be used to bring the cooling and heating curves into a more parallel relationship to improve process efficiency.

    摘要翻译： 已经设计了用于分离进料气体的组分（例如含有甲烷和较重烃）的简单，有效和成本有效的方法。 首先，进料气体被冷凝以提供蒸汽组分和液体组分。 蒸气成分至少分成第一部分，第二部分和第二部分，剩余部分。 第二部分被引导到贫回流吸收器，并且剩余部分被冷凝并进料到贫回流吸收器的顶部。 从贫回流吸收器的底部回收底部流体流，通常为液体中间产物，并从贫回流吸收器的顶部回收贫蒸汽。 液体组分，第一蒸气组分的第一个主要部分，来自贫回流吸收器的底部的液体产物和来自贫回流吸收器顶部的贫蒸汽都全部进料到低温蒸馏的不同进料点 柱。 可以使用可选的冷侧再沸器来使冷却和加热曲线进入更平行的关系，以提高加工效率。

    Method of producing gaseous oxygen at variable rate
    16.
    发明授权
    Method of producing gaseous oxygen at variable rate 失效
    以可变速率生产气态氧的方法

    公开(公告)号：US5778700A

    公开(公告)日：1998-07-14

    申请号：US846748

    申请日：1997-04-30

    申请人： Rong-Jwyn Lee ,  Joseph P. Naumovitz ,  Craig Steven LaForce

    发明人： Rong-Jwyn Lee ,  Joseph P. Naumovitz ,  Craig Steven LaForce

    IPC分类号： F25J3/04 ,  F25J3/00

    CPC分类号： F25J3/04515 ,  F25J3/0429 ,  F25J3/04303 ,  F25J3/04466 ,  F25J2200/06 ,  F25J2235/50 ,  F25J2240/42 ,  F25J2245/40

    摘要： A method of producing gaseous oxygen in accordance with a variable demand cycle in which pumped liquid oxygen from a double column air separation unit is vaporized within a mixing column. During low demand phases, excess liquid oxygen is stored within a storage tank and used to augment the liquid oxygen to vaporized during the high demand phase. Reflux to the lower pressure column of the air separation unit is kept constant by storing liquid with column bottoms produced within the mixing column during the high demand phase for use in the low demand phase when less liquid oxygen is vaporized and therefore less column bottoms is produced in the mixing column.

    摘要翻译： 根据可变需求循环来生产气态氧的方法，其中来自双塔空气分离单元的泵送液氧在混合塔内蒸发。 在低需求阶段期间，过量的液氧储存在储罐中，并用于在高需求阶段期间增加液氧的蒸发。 通过在较低需求阶段期间在低需求阶段中储存液体与塔底产生的混合塔中的塔底液的回流，使得空气分离单元的低压塔的回流保持恒定，当较少的液氧气被蒸发并因此产生较少的柱底时 在混合塔中。