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18 条记录 (耗时 0.022 秒)

    Rate-enhanced gas separation
    6.
    发明授权
    Rate-enhanced gas separation 有权
    速率增强气体分离

    公开(公告)号：US06500234B1

    公开(公告)日：2002-12-31

    申请号：US09622961

    申请日：2000-10-10

    申请人： Mark William Ackley ,  Frederick Wells Leavitt

    发明人： Mark William Ackley ,  Frederick Wells Leavitt

    IPC分类号： B01D53047

    CPC分类号： B01D53/02 ,  B01D53/04 ,  B01D53/047 ,  B01D2253/108 ,  B01D2253/1085 ,  B01D2253/304 ,  B01D2256/10 ,  B01D2256/12 ,  B01D2257/104 ,  B01J20/18 ,  Y10S95/902

    摘要： The invention is based upon the recognition that intrinsic sorption rates of adsorbent materials have a significant impact upon process performance. In a preferred embodiment an adsorption process uses an adsorbent zone comprising an adsorbent selected from the group consisting of A-zeolite, Y-zeolite, NaX, mixed cation X-zeolite, LiX having a SiO2/Al2O3silica/alumina ratio of less than 3.0, chabazite, mordenite, clinoptilolite, silica-alumina, alumina, silica, titanium silicates and mixtures thereof, wherein the adsorbent has a mass transfer coefficient for nitrogen of kN2≧12 s−1 and an intrinsic diffusivity for N2, when measured at 1.5 bar and 300K, of Dp≧3.5×10−6 m2/s. Other embodiments include the development of process parameters around which such materials should be used and methods of making such materials.

    摘要翻译： 本发明基于认识到吸附材料的固有吸附速率对工艺性能具有显着影响。 在优选的实施方案中，吸附方法使用包含选自A沸石，Y-沸石，NaX，混合阳离子X-沸石，SiO 2 / Al 2 O 3 /硅酸/氧化铝比小于3.0的LiX的吸附剂， 菱沸石，丝光沸石，斜发沸石，二氧化硅 - 氧化铝，氧化铝，二氧化硅，硅酸钛及其混合物，其中当在1.5巴测量时，吸附剂具有kN2> = 12s-1的氮的传质系数和N2的固有扩散系数 和300K，Dp> = 3.5×10 -6 m 2 / s。 其他实施例包括开发应该使用这些材料的工艺参数和制造这种材料的方法。

    Radial bed vaccum/pressure swing adsorber vessel
    8.
    发明授权
    Radial bed vaccum/pressure swing adsorber vessel 失效
    径向床真空/压力挥发吸附器

    公开(公告)号：US5759242A

    公开(公告)日：1998-06-02

    申请号：US681550

    申请日：1996-07-23

    申请人： James Smolarek ,  Frederick Wells Leavitt ,  Jeffert John Nowobilski ,  Victor Emmanuel Bergsten ,  John Harry Fassbaugh

    发明人： James Smolarek ,  Frederick Wells Leavitt ,  Jeffert John Nowobilski ,  Victor Emmanuel Bergsten ,  John Harry Fassbaugh

    IPC分类号： B01D53/04 ,  B01D53/047 ,  B01J8/02

    CPC分类号： B01D53/0476 ,  B01D53/0431 ,  B01D53/0446 ,  B01J8/0214

    摘要： A vessel for use in a pressure swing adsorption gas separation process includes an enclosing wall which defines an enclosed space having a top region and a bottom region. An annular adsorbent bed is positioned within the enclosed space and has a porous outer wall, a porous inner wall and adsorbent material positioned between the walls. The porous outer wall is separated from the enclosing wall to create a gas feed channel therebetween, and the porous inner wall surrounds an inner tank whose wall surface is separated from the porous inner wall and creates a product flow channel therebetween. A gas feed/distribution baffle structure is positioned in the bottom region of the vessel and in fluid communication with the gas feed channel to provide a gas feed thereto. The gas feed enters the gas feed channel and the adsorbent bed via the porous outer wall and in a direction generally radially towards the inner porous wall and product flow channel. A product outlet is positioned in the bottom region and in fluid communication with the product flow channel, for collecting product gas passing thereinto via the porous inner wall from the adsorbent bed. A flexible membrane extends between the porous outer wall and the porous inner wall, at the upper extremities thereof, and is pressurized so as to bear upon the upper surface of the adsorbent material to prevent fluidization during gas flow.

    摘要翻译： 用于变压吸附气体分离方法的容器包括封闭壁，其限定具有顶部区域和底部区域的封闭空间。 环形吸附剂床位于封闭空间内并具有多孔的外壁，多孔内壁和位于壁之间的吸附剂材料。 多孔外壁与封闭壁分离，在它们之间形成气体供给通道，多孔内壁围绕内壁，内壁与多孔内壁分离并在其之间形成产品流动通道。 气体供给/分配挡板结构定位在容器的底部区域中并与气体供给通道流体连通以提供气体供给。 气体进料通过多孔外壁进入气体进料通道和吸附剂床，并沿大致径向向内部多孔壁和产物流动通道的方向进入。 产品出口定位在底部区域中并与产品流动通道流体连通，用于从吸附床收集通过多孔内壁通过的产品气体。 柔性膜在其上端在多孔外壁和多孔内壁之间延伸，并且被加压以便承载在吸附材料的上表面上，以防止气流期间的流化。

    Vacuum/pressure swing adsorption (VPSA) for production of an oxygen enriched gas
    10.
    发明授权
    Vacuum/pressure swing adsorption (VPSA) for production of an oxygen enriched gas 失效
    用于生产富氧气体的真空/变压吸附（VPSA）

    公开(公告)号：US5871565A

    公开(公告)日：1999-02-16

    申请号：US783081

    申请日：1997-01-15

    申请人： Frederick Wells Leavitt

    发明人： Frederick Wells Leavitt

    IPC分类号： B01D53/04 ,  B01D53/047 ,  B01D53/053 ,  B01J20/28 ,  C01B13/02

    CPC分类号： B01D53/0476 ,  B01D53/053 ,  B01D2256/10 ,  B01D2257/102 ,  B01D2259/401 ,  B01D2259/402

    摘要： This invention relates to a VPSA method for the production of a product that is enriched with a more preferred gas from a mixture of the more preferred gas and a less preferred gas and, preferably to a VPSA method for the production of an oxygen-enriched product from air, using an oxygen-preferential adsorbent under equilibrium conditions. In a preferred embodiment the process uses a desorption purge at a nearly constant pressure that is selected to produce a steady stream of oxygen having a purity from 30% to 60% at a pressure in the range of 60 kPa to 20 kPa.

    摘要翻译： 本发明涉及一种用于生产富含更优选气体的产品的VPSA方法，该气体由更优选的气体和较不优选的气体的混合物组成，并且优选地涉及用于生产富氧产物的VPSA方法 在空气中，在平衡条件下使用氧优先吸附剂。 在一个优选的实施方案中，该方法使用几乎恒定的压力下的解吸吹扫，其被选择为在60kPa至20kPa范围内的压力下产生纯度为30％至60％的稳定的氧气流。