• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A hollow fiber module comprising a plurality of hollow fiber cartridges is disclosed. Each hollow fiber cartridge comprises a bundle of semi-permeable hollow fibers, said bundle being surrounded by a shell extending longitudinally along the length of the bundle and potted at both ends in a resin, thereby defining a lumen side volume for the treatment of a first solution and a shell side volume for the treatment of a second solution, said shell being provided with a port for receiving the second solution to be treated in the shell side volume and another port for discharging the treated second solution. The hollow fiber module comprises a first end cap comprising an inlet for the first solution and a distributer for distributing the first solution to a first end of each of the hollow fiber cartridges and a second end cap comprising a collector for collecting the treated first solution from the second end of each of the hollow fiber cartridges and an outlet for the treated first solution. The module also comprises a first connector comprising an inlet for the second solution and a distributer for distributing the second solution to a port of each of the hollow fiber cartridges and a second connector comprising a collector for collecting the treated second solution from the other port of each of the hollow fiber cartridges and an outlet for the treated second solution. The module meets the market need for a hollow fiber module having a large membrane area.
    公开号:DK201870809A1
    申请号:DKP201870809
    申请日:2018-12-12
    公开日:2020-07-31
    发明作者:Holm Møller Michael；Trzaskus Krzysztof；Friis Andersen Mads；Tung Nguyen Xuan；Alvisse Simon；Sun Guofei
    申请人:Aquaporin As；
    IPC主号:
    专利说明:

    DK 2018 70809 A1 1
    TITLE A hollow fiber module
    TECHNICAL FIELD The disclosure relates to a hollow fiber module comprising a plurality of hollow fiber cartridges, such as 3, 4, 5, 6, 7, 8, or 9 cartridges. The aggregation of a multitude of hollow fiber cartridges in a single module meets the industry need for modules with high membrane area.
    BACKGROUND A trend in module design is to obtain ever increasing membrane areas. For hollow fibre modules, one way of obtaining a higher membrane area could be to simply increase the number of fibers in the bundle of the hollow fibre module. However, above a certain threshold this way of increasing the membrane area of a single module complicates the process for production of the membrane module. When producing a hollow fibre module, a bundle of hollow fibres is cast (“potted”) at each end of the module using a polymer resin. It is of importance that the polymer resin used is cast uniformly around the fibre ends and that air bubbles are avoided. A preferred method for obtaining these effects is to use a centrifuge to spin the polymer resin down as disclosed in e.g. US 4,190,411 A. The centrifugal casting of the potting material works well for smaller modules and/or smaller fibres, however, above a certain threshold size of the module the centrifugal potting method is not feasible and static potting is the preferred choice for production. However, it has proven difficult to use the static method for
    DK 2018 70809 A1 2 large bundles of fibres, notably dialysis fibers and small diameter fibres. The present invention suggests a hollow fiber module having an increased membrane area.
    SUMMARY It is an object of the present invention to provide a hollow fiber module comprising a plurality of hollow fiber cartridges, wherein a. each hollow fiber cartridge comprises a bundle of semi-permeable hollow fibers, said bundle being surrounded by a shell extending longitudinally along the length of the bundle and potted at both ends in a resin, thereby defining a lumen side volume for the treatment of a first solution and a shell side volume for the treatment of a second solution, said shell being provided with a port for receiving the second solution to be treated in the shell side volume and another port for discharging the treated second solution, b. A first end cap comprising an inlet for the first solution and a distributer for distributing the first solution to a first end of each of the hollow fiber cartridges, Cc. A second end cap comprising a collector for collecting the treated first solution from the second end of each of the hollow fiber cartridges and an outlet for the treated first solution, d. A first connector comprising an inlet for the second solution and a distributer for distributing the second solution to a port of each of the hollow fiber cartridges, e. A second connector comprising a collector for collecting the treated second solution from the other port of
    DK 2018 70809 A1 3 each of the hollow fiber cartridges and an outlet for the treated second solution. For industrial purposes modules having a large membrane area are generally preferred for treating large volumes of feed. One way of meeting the demand for larger membrane areas could be to connect standard modules in parallel. However, this way of providing a larger volume is laborious and increases the risk of connecting the standard modules wrongly. Another possibility could be to prepare modules comprising a larger bundle of hollow fibers. However, it has not been possible to obtain a satisfying product simply by scaling up the current preferred centrifugal potting process.
    The present invention meets the need in the industry for providing a larger membrane area than can otherwise be prepared.
    While the use of end caps delimits the hollow fiber module in one dimension, i.e. in the length dimension, it is generally useful also to cover the space between the end caps. Therefore, in a certain embodiment of the invention, the first and second end cap are connected at their perimeter with a cover tube, said cover tube enclosing the plurality of cartridges in the longitudinal direction. The cover tube generally is cylindrical and offers the possibility of a surface for attaching labels informing the user of the product.
    To increase the stability of the hollow fiber module, it is usually preferred that the first and second connector are
    DK 2018 70809 A1 4 connected by a central rod. The increased stability results in that the hollow fiber module remains functional without leakage, even under extreme stress. Another advantage of using a central rod is that the first and second connector remains in the same position relative to each other thereby preventing or reducing torque on the hollow fiber cartridges. In a preferred embodiment the distributor comprises a plurality of tubes in fluid connection with the inlet, said tubes being adapted for accommodating a port of a hollow fiber cartridge. The number of tubes of the distributor usually corresponds to the number of modules as each module normally only has a single inlet port. The tubes may be connected to the inlet. In one embodiment, the channels meet in a common joint leading to the single inlet. Suitably, the tube and the first part of the channel extending from the tube forms a cavity corresponding to the port of the hollow fiber cartridge for allowing assembling of the hollow fiber cartridge and the connector.
    The collector, similarly to the distributor, comprises a plurality of tubes. The plurality of tubes is in fluid connection with the outlet and the tubes are adapted for accommodating a port of a hollow fiber cartridge. The number of tubes corresponds to the number of cartridges as each cartridge normally only has a single inlet port. The tubes may be connected to the outlet by channels provided in the connector. In one embodiment, the channels meet in a common joint leading to a single outlet. Suitably, the tubes and the first part of the channel extending from the tubes forms a cavity corresponding to the port of the hollow fiber cartridge
    DK 2018 70809 A1 for allowing assembling of the hollow fiber cartridge and the connector. In an aspect of the invention, the plurality of tubes is 5 positioned in the circumference of the distributor in two levels along the axis of the distributor. The application of two levels increase the mechanical stability and reduces the diameter of the distributor. Similarly, it is preferred that the plurality of tubes is alternatingly dispersed along the axis of the collector. The tubes of the distributor and the collector may be pairwise positioned for accommodating a hollow fiber cartridge. In a preferred aspect the axes of the hollow fiber cartridges are parallel to the axis of the hollow fiber modules. Furthermore, the axes of each the hollow fiber cartridges are suitably positioned in the same radial distance from the axis of the hollow fiber module. Suitably, the axes of the hollow fiber cartridges are positioned with the same angle between neighboring hollow fiber cartridges. Thus, when the hollow fiber module comprises 3 hollow fiber the angle between the axes of two neighboring hollow fibers relative to the axis of the hollow fiber module is suitably 120 degrees. When 4 hollow fiber cartridges are used, then the angle is 90 degrees, when 6 hollow fiber cartridges are used, then the angle is 60 degrees, ect.
    In a preferred aspect, the side of the first or second end cap facing the cartridges are provided with cup-shaped adaptors for accommodating the corresponding ends of the hollow fiber cartridges. The cup shaped adaptors allow for an equal filling of the lumen side of the fibers in a bundle. The equal or even filling of the lumen side result in a better
    DK 2018 70809 A1 6 usage of the available membrane area and in turn a higher efficiency. The rim of the cup-shaped adaptors is slightly wider in diameter compared to the outer diameter of the shell of the hollow fiber cartridge for allowing accommodation.
    In a preferred design, the cup-shaped adaptors are provided with a peripheral flange on the inner wall of the cup-shaped adaptor for abutment to the shell of a hollow fiber cartridge. The interface between the peripheral flange and the edge of the edge may be provided with a gasket, such as an O-ring, for securing the assembly from leaking. Preferably the hollow fiber module only comprises a single inlet for first solution. When the first solution has entered the end cap suitably an opening between two neighboring cup- shaped adaptors provided at the bottom for allowing exchange of liquid between the cup-shaped adaptors. The position of the openings in a distance from the fiber lumen allows the fluid to be mixed before it enters the lumen side, thereby further securing equal filling of the lumen of the fibers. The end cap in the other end of the hollow fiber cartridges collects the treated first solution in cups and the treated first solution is guided through channels in the bottom of the cups to an outlet.
    The number of cartridges is usually 2 or more, such as 3 or more hollow fiber cartridges are present in the hollow fiber module. To obtain a sufficient membrane area it is generally desired to use 4 or more hollow fiber cartridges. In a preferred aspect of the invention, 6 hollow fiber cartridges are present in the hollow fiber module.
    DK 2018 70809 A1 7 In a practical use of the hollow fiber module of the invention it is used for forward osmosis (FO). In the event that the semi-permeable hollow fiber membrane is asymmetrical having a selective skin layer providing for the rejection of some substances while allowing other substances to pass, the selective skin layer may be positioned on the inside or the outside of the hollow fibers.
    For hollow fiber modules using hollow fibers provided with the skin layer on the inside, the first solution is usually a feed solution intended for concentration and the second solution is a draw solution containing a solute rejected by the skin layer of the hollow fiber.
    Typically, water is exchanged over the membrane due to the osmotic pressure whereby the first (feed) solution is concentrated/dewatered and the second (draw) solution is diluted.
    If the selective skin layer is provided on the outside of the fibers, the feed solution is generally the second solution delivered to the shell side for concentration and the draw solution is introduced to the lumen side of the hollow fibers.
    The forward osmosis process may be assisted by a hydrostatic pressure (PAFO) to increase the water flux.
    In another practical application of the hollow fiber module of the invention it is used for reverse osmosis (RO) or nanofiltration (NF). Typically, the feed is subjected to a hydrostatic pressure exceeding the osmotic pressure for having the water of the feed to permeate through the membrane while retaining other components of the feed.
    The hollow fiber membrane may be provided by aquaporin water channels as disclosed in WO14108827, WO2017137361,
    DK 2018 70809 A1 8 WO2018141985, WO2018167221 or WO18087289, which are all incorporated in the present description by reference. In a preferred embodiment, the hollow fibers are coated on the inside or outside with a Thin Film Composite (TFC) layer with incorporated aquaporin water channels. It is observed that the term “hollow fibers” as used in the present description and claims also covers capillary and tubular membranes. The support hollow fibers are initially bundled and potted in a shell. The support hollow fibers may be prepared of a polymer such as e.g. polyethersulfone (PES), polysulfone (PS) or polyketone. The support hollow fibers have pores at a size normally used for ultrafiltration.
    The TFC layer is generally prepared as a reaction between an aqueous solution comprising a di- or triamine and an apolar solution comprising a di- or triacyl halide. More specifically, the aqueous solution comprising a self- assembled nanostructure comprising polyethyleneimine (PEI), a detergent solubilized aquaporin water channel, and a di- or triamine. The apolar solution comprises a di- or triacyl halide in an apolar organic solvent. Initially, the inside of the hollow fibers is contacted with the aqueous solution for a period of time sufficient for allowing the hollow fibers to absorb the aqueous solution. After removal of excess aqueous solution and optional drying, the apolar solution is added and interfacial polymerization between the reactants are allowed.
    The PEI may be a substantially linear or branched polymer having an average molecular weight of between about 2,000 Da
    DK 2018 70809 A1 9 to about 10,000 Da, such as between about 3,000 Da to about 5,000 Da. The aquaporin water channels are generally solubilized in a detergent selected from the group consisting of N,N-dimethyldodecylamine N-oxide (LDAO), octyl-glucoside (OG), n-dodecyl [(-D-maltoside (DDM), or a combination thereof. The di- or triamine may be m-phenylenediamine (MPD) suitably present in the aqueous solution in a concentration of about 1% to about 5 % (w/w).
    The di- or triacyl halide may be benzene-1,3,5-tricarbonyl chloride (TMC), which may be present in the apolar solution in a concentration of 0.05% to about 1% (w/v). Generally, the apolar organic solvent is hexane, heptane, octane, or a mixture thereof.
    The hollow fiber modules of the present invention may be used individually, or several modules may be used assembled in a flow system. When two or more modules are used together, they may be connected in a series or in parallel or in a combination thereof. A flow system comprising of two or more modules in series connection increases the membrane area and allows a more effective treatment of a feed solution.
    The foregoing and other objects are achieved by the features of the independent claims. Further implementation forms are apparent from the dependent claims, the description and the figures.
    These and other aspects will be apparent from and the embodiment (s) described below.
    DK 2018 70809 A1 10
    BRIEF DESCRIPTION OF THE DRAWINGS In the following detailed portion of the present disclosure, the aspects, embodiments and implementations will be explained in more detail with reference to the example embodiments shown in the drawings, in which: Fig. 1 is a perspectival view of the module. Fig. 2 is a view from above of the end cap. Fig. 3 shows a slicing of the module to peer inside. Fig. 4 shows a detailed illustration the embodiment of Fig.
    3. Fig. 5 illustrates a magnified slice of the module; Fig. 6 depicts a part of the connector, Fig. 7 shows a partly sliced connector, Fig. 8 illustrates a cap of the module viewed from inside. Fig. 9 Shows an explode view of the module in which only two out of 6 cartridges are present. Fig. 10 shows an embodiment in which cartridges are positioned in extension of each other.
    DETAILED DESCRIPTION In the embodiment described below, structures and features that are the same or similar to corresponding structures and features previously described or shown herein are denoted by the same reference numeral as previously used for simplicity. Figures 1 to 9 illustrate the same embodiment of the present invention. The hollow fiber module 1 encloses six hollow fiber cartridges 2. Fach cartridge comprises a not shown bundle of semi-permeable hollow fibers, i.e. hollow fibers which are
    DK 2018 70809 A1 11 permeable to some types of substances but not other types of substances.
    In the circumference of the bundle of semi- permeable fibers a shell 3 is provided.
    The shell 3 extends longitudinally along the length of the bundle of hollow fibers.
    At the ends 4 of the bundles the fibers are potted using a polymer resin.
    The polymer resin fixes the individual fibers in the resin matrix and connects to the inside of the end of the shell 3 so that the resin is essentially flush with the edge of the shell.
    The bundle of semi-permeable fibers is potted in the polymer resin in a was so that the hollow interior of the fibers is available for an afferent or efferent flow of a liquid.
    The potting of the fibers in the shell results in a lumen side volume defined by the interior space of the fibers (the lumen) and a shell side volume defined by the exterior space of the fibers delimited by the inside of the shell and the inside of the polymer resin matrix.
    The shell 3 is provided with a port 5’ for receiving a solution and another port 577 for discharging the treated solution.
    The ports 5’ and 577 are distanced from each along the length of the cartridge to allow matter to be exchanged over the semi-permeable membrane when a solution is conveyed from inlet port 5’ to outlet port 5/7. In the embodiment shown, the port is a tap extending radially from the axis of the cartridge.
    However, other embodiments are imaginable including that the port 5’ is just an opening capable receiving a solution from a source and the port 57/7 is an opening for delivering the treated solution to a recipient.
    DK 2018 70809 A1 12 Six hollow fiber cartridges are positioned in the module. At an end of the module a first end cap 6 is provided. The cap comprises an inlet 7 for a first solution to be treated by the semi-permeable membrane. Inside the first end cap a distribution system distributes the stream of first solution to the first end 9 of each of the hollow fiber cartridges. A second end cap 10 is provided in the other end of the module
    1. Inside the second end cap 10 a collector is provided for collecting the treated first solution from the second end of each of the six hollow fiber cartridges. The streams of the treated first solution is collected into single stream and discharged at an outlet 13.
    The first and the second end caps 6, 10 are connected at their perimeter through a cover tube 20. The cover tube houses the plurality of cartridges in the longitudinally direction. The end caps are provided with a number of apertures 26 facing each other for allowing fastening means to extend from one end cap to the other for assembling the module. Alternatively, the hollow fiber module may be assembled by gluing or hot melting the edges of the cylindrical cover tube to the perimeter of the first and the second end cap at each end. Apertures may be dispensed with in the latter embodiment.
    The hollow fiber module also comprises a first connector 14 that comprises an inlet 15 for the second solution. The inlet is in liquid communication with a distributor 16 for distributing the second solution to a port 5 of each of the hollow fiber cartridges. The distributor comprises a structure complementary to the port of the hollow fiber cartridge for allowing watertight connection when the port
    DK 2018 70809 A1 13 and the distributor are engaged. Optionally, an O-ring or glue may be positioned at the end of the port for securing watertight engagement even at moderate pressure i.e., at or below 10 bar. Alternatively, the ports and the tubes may be hot-melted or welded together. The distributor 16 comprises a number of tubes 22 extending radially from the axis of the connector. In the center of the distributor the tubes are fluidly connected to the inlet. The number of tubes 22 equals the number of hollow fiber cartridges of the hollow fiber module. The radially extending tubes are adapted for accommodating the port 5 of a hollow fiber cartridge.
    The multitude of tubes 22’ and 22/7/ are axially dispersed along the axis of the distributor to increase the mechanical strength of the module. Thus, three tubes 227 are circumferentially positioned around the axis of the connector in a first level closest to the inlet 15 and the outlet 19, and three other tubes 22’’ are circumferentially positioned in a second level distal to the inlet 15 and the outlet 19. When a hollow fiber cartridge is connected to the first and second connector port 5’ is connected to tube 22’ of the first connector and port 57” is connected to tube 2277 of the second connector.
    After the second solution has been treated in the shell side volume is discharged through port 577. The port is engaged with tubes 22 of the second connector 17. Each of the tubes 22 extends radially from the axis of the connector and are collected in the collector 18 of the connector, where they
    DK 2018 70809 A1 14 are fluidly connected to the outlet 19. The first and second connectors may be identical, however, positioned in an opposite direction inside the hollow fiber module.
    In the embodiment shown in the figures the first and second connectors 14 and 17 are connected by a central rod 21. The physical connection of the first and second connector increases the mechanical stability of the hollow fiber module and maintains the radially extending tubes 22 in a fixed distance from each other securing easy fitting of the ports 5 of the hollow fiber cartridges into the tubes 22.
    The first end cap 6 is provided on the side facing the cartridges with cup-shaped adapters 23’ and 2377 for accommodating the corresponding ends of the hollow fiber cartridges. The inlet 7 distributes the first solution to 2 neighboring cup-shaped adapters. The first solution is distributed to all the cup-shaped adaptors through openings 25 between neighboring cup-shaped adaptors provided at the bottom. The cup-shaped adaptors have different depths due to the axially displacement of the radially extending tubes. Thus, the cup-shaped adaptor 23’ has a higher depth that the cup-shaped adaptor 2377.
    The cup-shaped adaptors 23 of the first end cap 6 are provided with a peripheral flange 24 on the inner wall for abutment to the edge of shell 3 of a hollow fiber cartridge 2. A sealing member such as an O-ring may be positioned between the flange 24 and the edge of the shell to prevent leakage, notably when a hydrostatic pressure is provided on the first solution.
    DK 2018 70809 A1 15 Similarly, the second end cap 10 is provided on the side facing the cartridges with cup-shaped adapters 23’ and 2377 for accommodating the corresponding ends of the hollow fiber cartridges. The outlet 13 collects the first solution from 2 neighboring cup-shaped adapters. The first solution is collected from the other cup-shaped adaptors through openings 25 between neighboring cup-shaped adaptors provided at the bottom. The cup-shaped adaptors have different depths due to the axially displacement of the radially extending tubes 227 and 2277. Thus, the cup-shaped adaptor 23’ has a higher depth that the cup-shaped adaptor 2377. The cup-shaped adaptors 23 of the second end cap 10 are provided with a peripheral flange 24 on the inner wall for abutment to the edge of shell 3 of a hollow fiber cartridge
    2. A sealing member such as an O-ring may be positioned between the flange 24 and the edge of the shell to prevent leakage, notably when a hydrostatic pressure is provided on the first solution.
    The center of the first and the second end is provided with an aperture 27 capable of receiving the end part of the first and second connector 14, 17, respectively. The connectors are provided with a flange 28, that abuts the inside of the end caps around the aperture. A resilient sealing member, such as an O-ring may be provided for absorbing chocks in the event the module is roughly handled. Figure 10 shows an embodiment of the invention in which cartridges are positioned in extension of each other to obtain a hollow fiber module containing twelve hollow fiber
    DK 2018 70809 A1 16 cartridges 2. At an end of the module a first end cap 6 is provided.
    The cap comprises an inlet 7 for a first solution to be treated by the semi-permeable membrane.
    Inside the first end cap a distribution system distributes the stream of first solution to the first end 9 of each of the hollow fiber cartridges.
    A second end cap 10 is provided in the other end of the module 1. Inside the second end cap 10 a collector is provided for collecting the treated first solution from the second end of each of the six hollow fiber cartridges.
    The streams of the treated first solution is collected into a single stream and discharged at an outlet 13. The first and the second end caps 6, 10 are connected at their perimeter through a cover tube 20. The cover tube houses the plurality of cartridges in the longitudinally direction.
    The end caps are provided with a number of apertures 26 facing each other for allowing fastening means to extend from one end cap to the other for assembling the module.
    Alternatively, the hollow fiber module may be assembled by gluing or hot melting the edges of the cylindrical cover tube to the perimeter of the first and the second end cap at each end.
    Apertures may be dispensed with in the latter embodiment.
    The hollow fiber module also comprises a first connector that comprises an inlet 15 for the second solution.
    The inlet is in liquid communication with a distributor 16 for distributing the second solution to a port 5 of each of the hollow fiber cartridges.
    The distributor comprises a structure complementary to the port of the hollow fiber cartridge for allowing watertight connection when the port and the distributor are engaged.
    Optionally, an O-ring may be
    DK 2018 70809 A1 17 positioned at the end of the port for securing watertight engagement even under moderate pressure i.e., at or below 10 bar.
    The distributor 16 comprises a number of tubes 22 extending radially from the axis of the connector. In the center of the distributor the tubes are fluidly connected to the inlet. The number of tubes 22 equals the number of hollow fiber cartridges of the hollow fiber module. The radially extending tubes are adapted for accommodating the port 5 of a hollow fiber cartridge. After the second solution has been treated in the shell side volume is discharged through port 577. The port is engaged with tubes 22 of the second connector 17. Each of the tubes 22 extends radially from the axis of the connector and are collected in the collector 18 of the connector, where they are fluidly connected to the outlet 19. The first and second connectors may be identical, however, positioned in an opposite direction inside the hollow fiber module. In the embodiment shown in the figures the first and second connectors 14 and 17 are connected by a central rod 21. The physical connection of the first and second connector increases the mechanical stability of the hollow fiber module and maintains the radially extending tubes 22 in a fixed distance from each other securing easy fitting of the ports 5 of the hollow fiber cartridges into the tubes 22.
    The upper set of hollow fiber cartridges 2a and the lower set in hollow fiber cartridges 2b are connected by an annular
    DK 2018 70809 A1 18 spacer 27. Thus, when the first solution is treated in the lumen side volume of a hollow fiber cartridge 2a it is discharged at the second end 12a into a volume defined by the spacer, the second end 12a of the upper hollow fiber cartridge 2a, and the first end 9b of the lower hollow fiber cartridge 2b. Subsequently, the first solution is conveyed from the spacer volume into the lumen side volume of the lower cartridge 2b.
    The second solution is first treated in shell side volume o the lower set of hollow fiber cartridges 2b. The outlet 19b of the lower set of cartridges is in liquid communication with the inlet 15a of the upper set of hollow fiber cartridges 2a. The coupling of an upper set and a lower set of hollow fiber cartridges allows for the first solution to be treated twice for a more effective filtration.
    Fxamples The hollow fiber module according to the invention was tested in a forward osmosis setup. The feed solution (i.e. first solution) is pure water coming directly from a reverse osmosis system at a flow rate of 500 LPH (liters per hour). The draw solution is 1M sodium chloride and was introduced at a velocity of 200 LPH. The results show that the water flux (Jw) is 13,5 LMH, the reverse salt flux (Js) is 1.1 GMH. The specific salt flux can be calculated as 0.08 g/L.
    The pressure stability of the hollow fiber module was tested at a feed rate of 360 LPH and a draw rate of 150 LPH. The transmembrane pressure was 1.54 bar which the module was able to withstand without leakage. The specific salt flux was
    DK 2018 70809 A1 19 maintained at 0.08 g/L. In another experiment, the transmembrane pressure was increased to 6.5 bar inlet pressure without leakage. A hollow fiber module was supplied with feed solution and draw solution in counter-current and in co-current mode. The results show that in the counter-current setup the flux was
    12.09 LMH and the reverse salt flux was 1.16 GMH. In the co- current mode, the flux was measured as 12.33 LMH and the reverse salt flux was 1.14 GMH. Thus, regardless of the way of setting up the feed and the draw solution, the module has essentially the same performance. In another experiment, the module was placed in a horizontal and a vertical position. In the horizontal position and counter-current setup the flux was measured as 12.25 LMH and the reverse salt flux was measured as 1.18 GMH. When the module was positioned in the vertical position and the feed was introduced as the bottom, the flux was measured as 12.25 and the reverse salt flux was measured as 1.15 GMH. Thus, regardless of the position of the module, the performance remains essential the same.
    权利要求:
    Claims (10)
    [1] 1. A hollow fiber module comprising a plurality of hollow fiber cartridges, wherein a. each hollow fiber cartridge comprises a bundle of semi-permeable hollow fibers, said bundle being surrounded by a shell extending longitudinally along the length of the bundle and potted at both ends in a resin, thereby defining a lumen side volume for the treatment of a first solution and a shell side volume for the treatment of a second solution, said shell being provided with a port for receiving the second solution to be treated in the shell side volume and another port for discharging the treated second solution, b. A first end cap comprising an inlet for the first solution and a distributer for distributing the first solution to a first end of each of the hollow fiber cartridges, Cc. A second end cap comprising a collector for collecting the treated first solution from the second end of each of the hollow fiber cartridges and an outlet for the treated first solution, d. A first connector comprising an inlet for the second solution and a distributer for distributing the second solution to a port of each of the hollow fiber cartridges, e. A second connector comprising a collector for collecting the treated second solution from the other port of each of the hollow fiber cartridges and an outlet for the treated second solution.
    [2] 2. The hollow fiber module according to claim 1, wherein the first and second end cap are connected at their perimeter with a cover tube, said cover tube enclosing the plurality of cartridges in the longitudinal direction.
    DK 2018 70809 A1 21
    [3] 3. The hollow fiber module according to claims 1 or 2, wherein the first and second connector are connected by a central rod.
    [4] 4. The hollow fiber module according to any one of the claims 1 to 3, wherein the distributor comprises a plurality of tubes in fluid connection with the inlet, said tubes being adapted for accommodating a port of a hollow fiber cartridge.
    [5] 5. The hollow fiber module according to any one of the claims 1 to 4, wherein the plurality of tubes is positioned in the circumference of the distributor in two levels along the axis of the distributor.
    [6] 6. The hollow fiber module according to any one of the claims 1 to 5, wherein the side of the first or second end cap facing the cartridges are provided with cup-shaped adaptors for accommodating the corresponding ends of the hollow fiber cartridges.
    [7] 7. The hollow fiber module according to any one of the claims 1 to 6, wherein the cup-shaped adaptors are provided with a peripheral flange on the inner wall of the cup-shaped adaptor for abutment to the shell of a hollow fiber cartridge.
    [8] 8. The hollow fiber module according to any one of the claims 1 to 7, wherein the distributor comprises an opening between two neighboring cup-shaped adaptors provided at the bottom for allowing exchange of liquid between the cup-shaped adaptors.
    [9] 9, The hollow fiber module according to any one of the claims 1 to 8, wherein 3 or more hollow fiber cartridges are present in the hollow fiber module.
    [10] 10. The hollow fiber module according to any one of the claims 1 to 9, wherein 6 hollow fiber cartridges are present in the hollow fiber module.
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    同族专利:
    公开号 | 公开日
    DK180265B1|2020-09-21|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    法律状态:
    2020-07-31| PAT| Application published|Effective date: 20200613 |
    2020-09-21| PME| Patent granted|Effective date: 20200921 |
    优先权:
    申请号 | 申请日 | 专利标题
    DKPA201870809A|DK180265B1|2018-12-12|2018-12-12|A hollow fiber module|DKPA201870809A| DK180265B1|2018-12-12|2018-12-12|A hollow fiber module|
    US17/413,082| US20220072476A1|2018-12-12|2019-12-11|Hollow fiber module|
    KR1020217021444A| KR20210099641A|2018-12-12|2019-12-11|hollow fiber module|
    AU2019395802A| AU2019395802A1|2018-12-12|2019-12-11|A hollow fiber module|
    EP19820746.6A| EP3894053A1|2018-12-12|2019-12-11|A hollow fiber module|
    SG11202106151YA| SG11202106151YA|2018-12-12|2019-12-11|A hollow fiber module|
    JP2021533342A| JP2022512375A|2018-12-12|2019-12-11|Hollow fiber module|
    CN201980082701.5A| CN113423488A|2018-12-12|2019-12-11|Hollow fiber module|
    PCT/EP2019/084667| WO2020120583A1|2018-12-12|2019-12-11|A hollow fiber module|
    CA3122648A| CA3122648A1|2018-12-12|2019-12-11|A hollow fiber module|
    IL283827A| IL283827D0|2018-12-12|2021-06-08|A hollow fiber module|
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