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    Permeable membranes for enhanced gas separation
    21.
    发明授权
    Permeable membranes for enhanced gas separation 失效
    用于增强气体分离的渗透膜

    公开(公告)号：US4881954A

    公开(公告)日：1989-11-21

    申请号：US80476

    申请日：1987-07-31

    Applicant: Benjamin Bikson ,  James E. Miller ,  Joyce K. Nelson

    Inventor： Benjamin Bikson ,  James E. Miller ,  Joyce K. Nelson

    IPC: B01D53/22 ,  B01D67/00 ,  B01D69/08 ,  B01D69/10 ,  B01D69/12 ,  B01D71/68

    CPC classification number: B01D67/0083 ,  B01D53/228 ,  B01D69/12

    Abstract: Composite membranes are prepared by depositing a separation layer on an asymmetric support layer. The separation layer has a selectivity equal to or greater than that of the material of the asymmetric support layer for a desired gas separation. The support layer is desirably produced in non-asymmetric form, and exposed to an elevated temperature approaching the glass transition temperature of the support layer material under non-swelling conditions to modify the structure thereof to create asymmetry therein, before or after the deposition of the separation layer, and to increase its compaction resistance and collapse pressure. Such desirable properties are conveniently achieved on a repeatable basis, enhancing the uniformity and reliability of the treated support layer and of composite membranes produced therefrom, for use in gas separation operations.

    Tubesheet for semipermeable membrane devices
    22.
    发明授权
    Tubesheet for semipermeable membrane devices 失效
    用于半透膜装置的管板

    公开(公告)号：US4800019A

    公开(公告)日：1989-01-24

    申请号：US184799

    申请日：1988-04-22

    Applicant: Benjamin Bikson ,  Salvatore Giglia

    Inventor： Benjamin Bikson ,  Salvatore Giglia

    IPC: B01D69/08 ,  B01D63/02 ,  B01D13/00

    CPC classification number: B01D63/022 ,  B01D63/02

    Abstract: A method for producing hollow fiber permeable devices having an essentially leak-free seal between the hollow fibers and the tubesheet that consists of heating the tubesheet containing the hollow fibers potted therein at a temperature essentially equal to or greater than the glass transition temperature of the thermoplastic material or the softening point of the thermoset material of the hollow fiber for a period of time sufficient to essentially densify the hollow fibers in the potted portion of the tubesheet and whereby a major portion of the interior diameter of the bores of the hollow fibers embedded in the tubesheet is enlarged; and the fiber permeable devices themselves.

    Method of preparing composite gas separation membranes from perfluoropolymers
    24.
    发明授权
    Method of preparing composite gas separation membranes from perfluoropolymers 有权
    从全氟聚合物制备复合气体分离膜的方法

    公开(公告)号：US06923846B2

    公开(公告)日：2005-08-02

    申请号：US10371934

    申请日：2003-02-21

    Applicant: Joyce Katz Nelson ,  Benjamin Bikson ,  James Timothy Macheras

    Inventor： Joyce Katz Nelson ,  Benjamin Bikson ,  James Timothy Macheras

    IPC: B01D71/32 ,  B01D53/22 ,  B01D67/00 ,  B01D69/08 ,  B01D69/12 ,  B01D71/44 ,  D06M15/256 ,  B01D71/06

    CPC classification number: B01D67/0095 ,  B01D53/228 ,  B01D69/08 ,  B01D69/12 ,  B01D71/44 ,  Y10S55/05

    Abstract: A method for fabricating a composite membrane includes coating a substrate, such as, for example, an asymmetrical porous hollow fiber substrate, with a solution which includes a perfluorinated polymer and a perfluorinated solvent. Prior to coating, the substrate is impregnated with an impregnation fluid which is immiscible with the perfluorinated solvent. The method of the invention further includes removing the perfluorinated solvent and the impregnation fluid. A composite membrane includes a porous asymmetric hollow fiber substrate having an outer surface coated with a perfluoropolymer coating. Separation devices which include composite membranes and methods of separating a fluid mixture into a fraction enriched in a first component and a fraction depleted in that component also are described.

    Abstract translation: 复合膜的制造方法包括用包含全氟化聚合物和全氟化溶剂的溶液涂布例如不对称多孔中空纤维基材的基材。 在涂覆之前，用与全氟化溶剂不混溶的浸渍流体浸渍基材。 本发明的方法还包括除去全氟化溶剂和浸渍液。 复合膜包括具有涂覆有全氟聚合物涂层的外表面的多孔不对称中空纤维基材。 还描述了包括复合膜的分离装置和将流体混合物分离成富含第一组分的馏分和在该组分中耗尽的部分的方法。

    Process of making a structure enhancing hollow fiber module
    26.
    发明授权
    Process of making a structure enhancing hollow fiber module 失效
    制造结构增强中空纤维模块的工艺

    公开(公告)号：US5897729A

    公开(公告)日：1999-04-27

    申请号：US928480

    申请日：1997-09-12

    Applicant: Benjamin Bikson ,  Salvatore Giglia ,  Patrick Samuel Nicolas, Jr. ,  Cheryl Ann Ford

    Inventor： Benjamin Bikson ,  Salvatore Giglia ,  Patrick Samuel Nicolas, Jr. ,  Cheryl Ann Ford

    IPC: B01D63/02 ,  B65H81/00

    CPC classification number: B01D63/025 ,  B01D63/021 ,  B01D63/024

    Abstract: The invention involves annular hollow fiber membrane bundle comprising a plurality of helically wound layers of semi-permeable hollow fibers helically wound thereon and at least one reinforcement filament which has been helically wound concurrently with said hollow fibers into the hollow fiber membrane bundle. A preferred embodiment provides that the reinforcement filament is uniformly distributed throughout the diameter of the bundle and/or across the axial length of the bundle. Though, other embodiments provide a non-uniform distribution throughout the diameter of the bundle and/or across the axial length of the bundle.

    Abstract translation: 本发明涉及环形中空纤维膜束，其包括螺旋缠绕在其上的多个螺旋缠绕的半透空心纤维层和至少一个已与所述中空纤维螺旋缠绕到中空纤维膜束中的加强丝。 一个优选实施例提供了加强细丝均匀分布在整个束的直径和/或横跨束的轴向长度。 尽管其它实施例提供了整个束的直径和/或横跨束的轴向长度的不均匀分布。

    Structure enhancing hollow fiber module
    28.
    发明授权
    Structure enhancing hollow fiber module 失效
    结构增强中空纤维模块

    公开(公告)号：US5702601A

    公开(公告)日：1997-12-30

    申请号：US625671

    申请日：1996-03-29

    Applicant: Benjamin Bikson ,  Salvatore Giglia ,  Patrick Samuel Nicholas, Jr. ,  Cheryl Ann Ford

    Inventor： Benjamin Bikson ,  Salvatore Giglia ,  Patrick Samuel Nicholas, Jr. ,  Cheryl Ann Ford

    IPC: B01D63/02 ,  B01D63/00

    CPC classification number: B01D63/025 ,  B01D63/021 ,  B01D63/024

    Abstract: The invention involves annular hollow fiber membrane bundle comprising a plurality of helically wound layers of semi-permeable hollow fibers helically wound thereon and at least one reinforcement filament which has been helically wound concurrently with said hollow fibers into the hollow fiber membrane bundle. A preferred embodiment provides that the reinforcement filament is uniformly distributed throughout the diameter of the bundle and/or across the axial length of the bundle. Though, other embodiments provide a non-uniform distribution throughout the diameter of the bundle and/or across the axial length of the bundle.

    Abstract translation: 本发明涉及环形中空纤维膜束，其包括螺旋缠绕在其上的多个螺旋缠绕的半透空心纤维层和至少一个已与所述中空纤维螺旋缠绕到中空纤维膜束中的加强丝。 一个优选实施例提供了加强细丝均匀分布在整个束的直径和/或横跨束的轴向长度。 尽管其它实施例提供了整个束的直径和/或横跨束的轴向长度的不均匀分布。

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