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13 条记录 (耗时 0.02 秒)

    System to increase capacity of LNG-based liquefier in air separation process
    4.
    发明授权
    System to increase capacity of LNG-based liquefier in air separation process 有权
    在空气分离过程中增加液化天然气液化器的能力

    公开(公告)号：US07712331B2

    公开(公告)日：2010-05-11

    申请号：US11477924

    申请日：2006-06-30

    申请人： Douglas Paul Dee ,  Jung Soo Choe ,  Donn Michael Herron

    发明人： Douglas Paul Dee ,  Jung Soo Choe ,  Donn Michael Herron

    IPC分类号： F25J1/00 ,  F25J3/00 ,  F17C9/02

    CPC分类号： F25J1/0264 ,  F25J1/0015 ,  F25J1/004 ,  F25J1/0224 ,  F25J1/0234 ,  F25J1/0245 ,  F25J1/0292 ,  F25J3/0406 ,  F25J3/04224 ,  F25J3/04266 ,  F25J3/04272 ,  F25J3/04351 ,  F25J3/04412 ,  F25J3/04678 ,  F25J3/04812 ,  F25J3/04969 ,  F25J2210/02 ,  F25J2210/62 ,  F25J2230/08 ,  F25J2230/42 ,  F25J2245/42

    摘要： A system is set forth to increase the capacity of an LNG-based liquefier in a cryogenic air separation unit wherein, in a low production mode, the nitrogen that is fed to the LNG-based liquefier consists only of at least a portion of the high pressure nitrogen from the distillation column system while in a high production mode, a supplemental compressor is used to boost the pressure of at least a portion of the low pressure nitrogen from the distillation column system to create additional (or replacement) feed to the LNG-based liquefier. A key to the present invention is the supplemental compressor and the associated heat exchange equipment is separate and distinct from the LNG-based liquefier. This allows its purchase to be delayed until a capacity increase is actually needed and thus avoid building an oversized liquefier based on a speculative increase in liquid product demand.

    摘要翻译： 提出了一种系统来提高低温空气分离装置中基于液化天然气的液化器的容量，其中在低生产模式中，供给到基于LNG的液化器的氮仅由至少一部分高的 来自蒸馏塔系统的高压氮气在高生产模式下，补充压缩机用于提高来自蒸馏塔系统的至少一部分低压氮气的压力，以产生到LNG- 液化器。 本发明的关键是补充压缩机，并且相关联的热交换设备与基于液化天然气的液化器是独立的和不同的。 这允许其购买被延迟，直到实际需要增加容量，从而避免在液体产品需求的推测性增加的情况下构建过大的液化器。

    Pressure swing adsorption process which provides product gas at decreasing bed pressure
    8.
    发明授权
    Pressure swing adsorption process which provides product gas at decreasing bed pressure 失效
    在降低床压下提供产品气体的变压吸附过程

    公开(公告)号：US06428607B1

    公开(公告)日：2002-08-06

    申请号：US09602719

    申请日：2000-06-26

    申请人： Jianguo Xu ,  Mark Robert Pillarella ,  Douglas Paul Dee

    发明人： Jianguo Xu ,  Mark Robert Pillarella ,  Douglas Paul Dee

    IPC分类号： B01D53053

    CPC分类号： B01D53/0476 ,  B01D2256/12 ,  B01D2257/102 ,  B01D2259/40015 ,  B01D2259/40032 ,  B01D2259/40037 ,  B01D2259/40052 ,  B01D2259/40071 ,  B01D2259/40081 ,  B01D2259/403

    摘要： A pressure swing adsorption process for the separation of a pressurized feed gas containing at least one more strongly adsorbable component and at least one less strongly adsorbable component. The process comprises (a) introducing the pressurized feed gas into a feed end of an adsorber bed containing one or more solid adsorbents which preferentially adsorb the more strongly adsorbable component and withdrawing from a product end of the adsorber bed a first adsorber effluent gas enriched in the less strongly adsorbable component, wherein the first adsorber effluent gas is utilized as final product gas; (b) terminating the introduction of the pressurized feed gas into the adsorber bed while withdrawing from the product end of the adsorber bed a second adsorber effluent gas enriched in the less strongly adsorbable component, wherein the pressure in the adsorber bed decreases while the second adsorber effluent gas is withdrawn therefrom, and wherein the second adsorber effluent gas is utilized as additional final product gas; (c) depressurizing the adsorber bed to a minimum bed pressure by withdrawing additional gas therefrom; (d) repressurizing the adsorber bed by introducing repressurization gas into the bed, wherein at least a portion of the repressurization gas is provided by pressurized feed gas; and (e) repeating steps (a) through (d) in a cyclic manner. No final product gas is required for purge or repressurization in the process cycle steps.

    摘要翻译： 一种用于分离含有至少一种更强吸附组分和至少一种较不强吸附组分的加压进料气体的变压吸附方法。 该方法包括（a）将加压进料气体引入到吸附床的进料端中，所述吸附床含有一种或多种固体吸附剂，其优先吸附较强吸附组分并从吸附床的产物末端排出富含第一吸附剂流出气体 不易吸附的组分，其中第一吸附剂流出气体用作最终产物气体; （b）终止将加压进料气体引入吸附床中，同时从吸附床的产物端退出富含较不强吸附组分的第二吸附剂流出气体，其中吸附床中的压力降低，而第二吸附剂 从其中排出废气，其中第二吸附剂废气用作附加的最终产物气体; （c）通过从其中抽出另外的气体将吸附床减压至最小床压; （d）通过将再加压气体引入床中来对吸附床进行再加压，其中至少一部分再加压气体由加压进料气体提供; 和（e）以循环方式重复步骤（a）至（d）。 在过程循环步骤中不需要最终产品气体进行吹扫或再加压。

    High purity oxygen production by pressure swing adsorption
    10.
    发明授权
    High purity oxygen production by pressure swing adsorption 有权
    通过变压吸附制备高纯度氧气

    公开(公告)号：US06544318B2

    公开(公告)日：2003-04-08

    申请号：US09782236

    申请日：2001-02-13

    申请人： Douglas Paul Dee ,  Robert Ling Chiang ,  Edwin John Miller ,  Roger Dean Whitley

    发明人： Douglas Paul Dee ,  Robert Ling Chiang ,  Edwin John Miller ,  Roger Dean Whitley

    IPC分类号： B01D53047

    CPC分类号： B01D53/047 ,  B01D53/0476 ,  B01D2253/1085 ,  B01D2253/25 ,  B01D2256/12 ,  B01D2257/102 ,  B01D2257/11 ,  B01D2259/4003 ,  B01D2259/40064 ,  B01D2259/402 ,  B01D2259/4146 ,  Y10S95/902

    摘要： Pressure swing adsorption process for the recovery of high purity oxygen from a feed gas comprising oxygen, nitrogen, and argon. The process includes a forward flow stage which comprises (a) passing the feed gas into a first adsorption zone containing an adsorbent selective for the adsorption of nitrogen over oxygen and argon, and withdrawing therefrom a nitrogen-depleted intermediate gas; (b) passing the nitrogen-depleted intermediate gas into a second adsorption zone containing an adsorbent which is selective for the adsorption of nitrogen over argon and selective for the adsorption of argon over oxygen; (c) withdrawing an oxygen-enriched product gas from the second adsorption zone; and (d) terminating the passing of feed gas into the first adsorption zone and withdrawing an oxygen-enriched depressurization gas from the second adsorption zone in the same flow direction as (c). During (a) or during (d), nitrogen breakthrough from the first adsorption zone can occur and nitrogen can be adsorbed in the second adsorption zone.

    摘要翻译： 用于从包含氧，氮和氩的进料气中回收高纯度氧的变压吸附方法。 该方法包括正向流动阶段，其包括（a）使进料气体进入含有选择性地吸附氮气的氧气和氩气并从其中排出贫氮中间气体的第一吸附区域; （b）将贫氮中间气体通入含有吸附剂的第二吸附区，所述吸附剂选择性地吸附氮气并且选择性地吸附氧气; （c）从第二吸附区抽出富氧产物气体; 和（d）终止进料气体进入第一吸附区并从与第（c）相同的流动方向从第二吸附区抽出富氧减压气体。 在（a）期间或（d）期间，可能会发生第一吸附区的氮气穿透，氮吸附在第二吸附区。