WO2017114522A1 - Support de membrane avec soutien destiné à une membrane perméable, procédé de fabrication et d'utilisation d'un support de membrane avec soutien de ce type - Google Patents

Support de membrane avec soutien destiné à une membrane perméable, procédé de fabrication et d'utilisation d'un support de membrane avec soutien de ce type Download PDF

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Publication number
WO2017114522A1
WO2017114522A1 PCT/DE2016/100555 DE2016100555W WO2017114522A1 WO 2017114522 A1 WO2017114522 A1 WO 2017114522A1 DE 2016100555 W DE2016100555 W DE 2016100555W WO 2017114522 A1 WO2017114522 A1 WO 2017114522A1
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WO
WIPO (PCT)
Prior art keywords
membrane holder
membrane
pipe wall
supporting membrane
central cylinder
Prior art date
Application number
PCT/DE2016/100555
Other languages
German (de)
English (en)
Inventor
Christian Hamm
Torben GENTZ
Original Assignee
Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung filed Critical Alfred-Wegener-Institut, Helmholtz-Zentrum für Polar- und Meeresforschung
Publication of WO2017114522A1 publication Critical patent/WO2017114522A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
    • B01D69/10—Supported membranes; Membrane supports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
    • B01D63/06—Tubular membrane modules
    • B01D63/062—Tubular membrane modules with membranes on a surface of a support tube
    • B01D63/065—Tubular membrane modules with membranes on a surface of a support tube on the outer surface thereof
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/04—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components
    • H01J49/0422—Arrangements for introducing or extracting samples to be analysed, e.g. vacuum locks; Arrangements for external adjustment of electron- or ion-optical components for gaseous samples
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2313/00—Details relating to membrane modules or apparatus
    • B01D2313/22—Cooling or heating elements

Definitions

  • Supporting membrane holder for a permeable membrane method for making and using such a supporting membrane holder
  • the invention relates to a supporting membrane holder for a permeable membrane as an interface between an inner space and an outer space of the membrane holder for differential pressure assisted separation of suspended or dissolved substances in a fluid, wherein the membrane holder has a cylindrical tube wall with a central longitudinal axis and permeable pores, and on a method of making and applying such a membrane holder.
  • tangential flow filtration or “cross-flow membrane filtration”
  • a permeable membrane which is permeable to a single substance depending on its particle size or solubility potential (selective permeability), with the fluid and a pressure differential applied.
  • the fluid flows tangentially along the membrane.
  • On one side of the membrane there is a different pressure than on the other side. Due to this pressure difference, the permeable membrane acts like a sieve, and there are individual components (“substances”) that are smaller than the permeable pores of the membrane or which dissolve well in the membrane product, transferred from the flowing fluid to the other side of the membrane.
  • permeate A so-called “permeate” is formed, in which the solvent can still be involved.
  • retentate The remaining solvent with the remaining components on the other side of the membrane. Both permeate and retentate can be further processed. The task of the membrane can also already with the actual
  • Separations separation of dissolved gases from a liquid or vaporized or atomized liquids from a gas.
  • inlet and outlet system This comprises as basic components an inlet device, a membrane with membrane holder and an outlet device in the direction of the further processing device.
  • membranes made of plastics, glass, ceramics (so-called “frits") or other sintered materials and metals can be used.
  • Thin rigid or flexible membranes for example made of a thin metal or ceramic sieve or of a plastic such as silicone (eg polydimethylsiloxane PDMS), require a membrane holder which not only positions them in a stationary manner ("self-supporting membrane”) but also supports them flatly (" supporting membrane holder ").
  • US Pat. No. 7,434,446 B2 discloses a system for transferring and measuring gas dissolved in a liquid under pressure, in which a permeable membrane is pulled over a membrane holder in the form of a spiral spring or a tube bundle. The fluid flows within the coil spring or the spaces between the individual tubes in the bundle. Between the outer space and the interior of the membrane there is a pressure difference, wherein the pressure in the outer space is greater than the pressure in the interior and substances from the outer space in the interior overpass.
  • the spiral spring or tube bundle supports the membrane from its inside and protects it from collapsing due to its greater expression.
  • a spiral spring has a high porosity, but can also collapse at greater external pressures, which can lead to a complete reduction of the volume flow or - in the worst case - to rupture of the membrane with subsequent flooding in the sensor unit.
  • the tube bundle shows an unfavorable porosity and significantly reduces the free cross section within the membrane, so that flow obstructions can occur here.
  • the known membrane holder has a heating device for fluid heating and thus to improve the passage behavior of the substances through the membrane.
  • the heater is located outside the membrane holder in the surrounding housing.
  • US Pat. No. 7,579,587 B2 it is also known to provide a heating device in the interior of a self-supporting, cylindrical membrane. This is rod-shaped and extends along the longitudinal axis of the membrane. There is a heating of the inside of the membrane via heat radiation. However, this is influenced by the fluid within the membrane and is not homogeneous.
  • US Pat. No. 6,744,045 A2 discloses a portable mass spectrometer for underwater use. The analyzer is a quadrupole. In the inlet system there is a selective small membrane, which is exposed to particularly high differential pressures depending on the depth of use of the UWMS.
  • the object of the present invention is to provide a supporting membrane holder which has a high molecular permeability at high differential pressures on it.
  • the claimed membrane holder should accordingly be highly permeable to selective components and at the same time also extremely pressure-resistant. Furthermore, it should be reliably reproducible to produce. The production should therefore preferably be automated.
  • the solution for This object is to be taken from the main claim and the independent claims.
  • the claimed supporting membrane holder for a permeable membrane as an interface between an inner space and an outer space of the membrane holder for the differential pressure assisted separation of suspended or dissolved substances in a fluid wherein the membrane holder has a cylindrical tube wall with a central longitudinal axis and permeable pores, according to the invention is characterized in that in the interior of the membrane holder at least one central cylinder along the central longitudinal axis and connecting struts between the central cylinder and the cylindrical
  • Tube walls are arranged, wherein the connecting struts are arranged radially around the central cylinder in a uniform, symmetrical distribution and end in intimidticianen on the tube wall, and that the pores are arranged in the pipe wall in a predetermined distribution.
  • the tubular membrane holder according to the invention provides a particularly compact design for meeting the highest demands in terms of pressure resistance and porosity. It supports the membrane from its interior so that differential pressure applications due to a higher external pressure than the interior are possible.
  • the substances to be extracted from the fluid diffuse from the outer space through the membrane into the interior and are supplied from there for further processing.
  • the membrane holder according to the invention is characterized by a supporting structure of connecting struts.
  • the connecting struts go from a central cylinder and end at the pipe wall.
  • the connecting struts have the supporting function, the pressure-loaded pipe wall on which the pliable membrane is placed in the application, to prevent collapse and are in turn supported by the central cylinder. But they do not hinder the fluid flow in the interior of the Membrane.
  • the pipe wall is highly porous. Due to the supportive connecting struts their support function is not impaired by the high porosity.
  • the pores are arranged according to a predetermined distribution in the pipe wall, so that a reproducible
  • Radiolarians which must have a high compressive strength and a high permeability due to their lifestyle.
  • Diatom skeletons usually enclose an empty space in which further functional elements can be embedded. Compressive strength is often ensured by a fractal honeycomb structure. The diffusion of nutrients into the cells is facilitated by having passageways between the individual honeycombs and minimizing the area of restricted diffusion through the fractal structure of the ridges.
  • Radiolarians often have an internal star-shaped, outwardly branching supporting skeleton, which further increases the compressive strength.
  • Organism groups permeability and compressive strength, wherein diatoms are more optimized in terms of permeability, Radiolarien rather in terms of compressive strength.
  • the connecting struts are arranged in several radial planes along the central cylinder. The result is a support structure that is relatively easy to produce, which guarantees a high compressive strength without disturbing the porosity. But it can also be another, for example, a helical arrangement of the connecting struts be provided in order to achieve the most continuous support possible. Further details on the structure of the claimed membrane holder can be found in the exemplary embodiments.
  • a particularly good support of the membrane by the claimed membrane holder can be achieved, if further preferred and advantageous provided that the bases are evenly distributed in individual sections of the pipe wall or over the entire pipe wall. In a sectional distribution results in the sections a homogeneous
  • connecting struts are branched at its end facing the pipe wall in several sub-struts and have a plurality of mutually spaced foot points on the pipe wall.
  • the homogeneity of the support of the pipe wall by the connecting struts is then achieved not by the number and distribution of the connecting struts themselves, but by the number of outgoing of the connecting struts under struts.
  • the number of connecting struts can be reduced with the same support the pipe wall. Nevertheless, by the branching of the connecting struts in Unterstreben a uniform load distribution and thus achieved a high load capacity.
  • the connecting struts are branched fractally in several axial planes into the lower struts.
  • fractal stands for a self-similarity of the elements in all levels.
  • the central cylinder In the basic embodiment of the claimed membrane holder three components occur: the central cylinder, the connecting struts and the tube wall.
  • the connecting struts run between the central cylinder and the pipe wall and end there in foot points, which may be distributed in sections or generally evenly.
  • the bases can preferably and advantageously pass continuously into the pipe wall in order to avoid voltage peaks.
  • the membrane holder can be composed of the three independent components, which may possibly be made of different materials.
  • a one-piece design of the tube wall with the connecting struts and / or the connecting struts with the central cylinder is provided for the supporting membrane holder.
  • a completely one-piece design only one material is used.
  • materials are a multi-piece construction, but the individual components can adjoin one another seamlessly, as in a one-piece design, again to avoid mechanical stress peaks.
  • the claimed membrane holder according to the invention is characterized by a large porosity.
  • the use of the membrane holder for measurement purposes does not lead to measurement inaccuracies and delays due to backwater. It results in a very large Flow rate and thus a high measuring sensitivity.
  • the distribution of the pores in the tube wall can be determined.
  • the distribution of pores is basically known for reproducibility, according to a next embodiment of the invention it may also be preferred and advantageous that the pores are uniformly distributed in individual regions of the tube wall or in the entire tube wall.
  • the membrane holder a uniform distribution of the pores over the entire tube wall for a particularly high throughput and for a uniform mass diffusion through the membrane over the entire fluid flow is used.
  • a porosity in regions can be used, for example, for a special further processing of the permeated substances.
  • the particularly good properties of the membrane holder according to the invention already lead to a significant increase in performance in most applications.
  • the permeation of the substances through the membrane is highly temperature dependent.
  • the entire fluid to be measured or filtered is usually heated in order to achieve this goal.
  • a particularly preferred and advantageous embodiment of the invention provides that in the central cylinder, a heater is integrated and the connecting struts and the pipe wall are formed thermally conductive.
  • the heat is generated in the central cylinder and passed over the connecting struts, which are then preferably particularly uniform and symmetrical and arranged to the pipe wall.
  • the heater may be, for example, a heating element.
  • the heating device is designed as a heating wire, which can also be embedded in dimensions of very small central cylinder. In such a heater, a particularly reliable control can be provided, which leads to an optimal constant and homogeneous heating of the pipe wall with minimal energy use.
  • the claimed membrane holder according to the invention is also characterized in that the pores are arranged in a known distribution in the tube wall. This ensures identical reproducibility and all
  • Membrane mounts have the same characteristics in use. In a sintered production but no reproducible pore distribution can be achieved. An important point for the realization of the membrane holder according to the invention is therefore its reproducible manufacturability.
  • a method for producing the supporting membrane holder can be applied, which is characterized in that a selective sintering or melting of at least one powdered starting material is carried out using a laser. With such a three-dimensional printing process, highly complex structures can be produced. It can also be optimally taken into account that the tube wall of the membrane holder is particularly smooth on its outer side and has no cracks or edges, so that the sensitive membrane can be covered without damage and no voids occur. Furthermore, the permeable pores may be co-printed or subsequently introduced into designated symmetrical structures, such as honeycomb structures.
  • micro-laser-sintering is an additive manufacturing process with an extremely high resolution, so that wall thicknesses of about 250 ⁇ m can be achieved for a component with a layer thickness of ⁇ 5 ⁇ m and a focus diameter of ⁇ 30 ⁇ m
  • the manufacturing method is that the permeability of the tube wall of the claimed membrane holder is not generated by the manufacturing process per se, as in sintered holders, but rather by a fine honeycomb structure which has a homogeneously fused material structure. Thus, the reproducibility of the required permeability can be ensured.
  • Laser sintering is an additive manufacturing process: the workpiece is built up layer by layer.
  • any three-dimensional geometries can be generated with undercuts, z.
  • B. Workpieces that can not be produced in conventional mechanical or casting production.
  • a basic prerequisite for the production is that the geometric data of the claimed membrane holder are present in three dimensions and are processed as layer data.
  • the powdery material is for example polyamide or another plastic, a metal or a ceramic powder.
  • the powder is applied to a building platform with the aid of a doctor blade or roller over the entire surface in a thickness of 1 to 200 ⁇ .
  • the layers are successively sintered or melted into the powder bed by triggering the laser beam in accordance with the layer contour of the component.
  • the build platform is now slightly lowered and a new layer raised.
  • the powder is made available by lifting a powder platform or as a stock in the squeegee.
  • the processing is done layer by layer in the vertical direction, this makes it possible to create even undercut contours. Support structures in the production are not required because the membrane holder is always supported during its formation by the surrounding powder. At the end of the process, the remaining powder can then be simply tapped off and partially reused for the next run.
  • a special form for the production of microstructures is laser microsinternating. Here, a Q-switched laser is used with short pulses.
  • the process can take place both in a vacuum chamber, whereby nanopowders can also be processed, as well as under protective gas or in the case of special metals under air.
  • the resolution of the method is better than 30 ⁇ .
  • Sensitivity of the connected sensors Using the underwater mass spectrometer as an example, measurements at greater depths with a reduced detection limit are possible by e.g. characterize under-sea outgassing points of climate-relevant gases such as methane or CO2 even more accurately than has hitherto been possible. With the help of the developed innovative inlet system and the associated improved (reduced) detection limit of the sensor, the threshold values required by the Water Framework Directive can be satisfactorily detected for the first time. Furthermore, the development for the environmental monitoring of aquatic systems and for the remediation of contaminated sites can be used under extreme operating conditions with a high accuracy and reliability.
  • the membrane holder according to the invention is an effective, highly sensitive
  • the aim of this development will be to improve the detection limits of the sensors currently on the market (including for the detection of heavy metals, nitrates, and dissolved hydrocarbons), so that even low threshold values of the measuring range are covered.
  • the improved analytics will allow more efficient and accurate data collection in environmental monitoring.
  • the overall system can be better valued, which significantly improves the sustainability of environmental measures derived from it.
  • a particularly innovative feature of the claimed membrane holder is the combination of high permeability with excellent compressive strength and a homogeneous, controlled thermal control. While the intended application initially envisages the improvement of sensor technology, adaptation to other technologies (for example, filter technology, electroplating) is sensible and realistic.
  • the new membrane holder in conjunction with suitable membranes can be used to create improved structures for the ionic transition.
  • Figure 2 shows a first embodiment of the supporting membrane holder with straight connecting struts in the
  • FIG. 3 shows a second embodiment of the supporting membrane holder with simple lower struts in the perspective view
  • FIG. 4 is a perspective view of a third embodiment of the supporting membrane holder with fractally structured lower struts;
  • FIG. 5 shows a fourth embodiment of the supporting membrane holder with a heating device in the perspective view,
  • FIG. 6 shows a fifth embodiment of the supporting membrane holder with a discontinuous distribution of pores and connecting struts in longitudinal section
  • FIG. 7 shows a cross section through the embodiment according to FIG. 6.
  • Figures 1 A and 1 B show examples from nature, which can be transferred as a concept to the structure of the claimed membrane holder.
  • Figure 1 A shows a spherical Radiolarie. Good to see are a highly porous wall, radially extending connecting struts and a center.
  • FIG. 1A shows a flat crochet doily with a fractal structure. Connecting struts emerge from one center, branching into sub-struts in several axial fractal planes. There are six levels shown. Many underlings end up on the wall and
  • the membrane holder 01 is used for coating a membrane (not shown in the figures).
  • the membrane represents an interface between an interior space 02 within the membrane holder 01 and an exterior space 03 outside the membrane holder 01 and serves for the differential pressure-assisted separation of suspended or dissolved substances in a liquid or gaseous, flowing fluid.
  • the membrane is permeable and always allows in one direction, ie in the invention from the interior 02 into the exterior 03, substances therethrough.
  • the usually flexible or even pliable membrane is supported by the membrane holder 01 and before protected from collapsing under the influence of pressure.
  • the membrane holder 01 is used, for example, in an underwater mass spectrometer (hydrostatic pressure in 2000 to 4000 m, for example 200 to 400 bar in the outer space 03 to vacuum in the interior 02) for depth profiled detection of dissolved trace gases in the water, can in depths of up to 4000 m against a vacuum in the interior 03 of the membrane holder 01 differential pressures of up to 400 bar act on the membrane holder 01.
  • the membrane holder 01 is also highly permeable. It is desirable to have a porosity of at least 80% in order not to hinder the flow during the tangential flow filtration on the membrane.
  • the membrane holder 01 (dimensions, for example, 13 mm in length and 3 mm in diameter) comprises a tube wall 11 with a central longitudinal axis 10 and permeable pores 05.
  • the permeable pores 05 are arranged uniformly in the pipe wall 11 in a predetermined distribution.
  • a Zentraizylinder 12 is arranged in the interior 02 of the membrane holder 01 along the central longitudinal axis 10 .
  • the connecting struts 08 are arranged, which support the pipe wall 1 1 in the foot points 09.
  • In the embodiment shown are simple radial connecting struts 08.
  • the bases 09 are in uniform distribution on the pipe wall 1 first
  • the connecting struts 08 are arranged in the illustrated embodiment in radial planes 13.
  • the orientation of the connecting struts 08 between the radial planes 13 may be identical. In the illustrated embodiment, however, they are arranged offset by a few degrees to each other. This results in a particularly homogeneous support of the pipe wall 1 1.
  • FIG 3 shows a further embodiment of the membrane holder 01 is shown, in which the connecting struts 08 at its the permeable pipe wall 1 1 have facing end 14 in a plurality of sub-struts 15 are branched and a plurality of mutually spaced feet 09 on the pipe wall 1 1 have. This results in a homogeneous load distribution at a high load capacity.
  • FIG. 4 shows a further embodiment of the membrane holder 01 is shown, in which the connecting struts 08 are divided at several axial planes 16 in the lower struts 17. The result is a fractal distribution with a
  • the distribution of the foot points 09 on the pipe wall 1 1 is particularly homogeneous and dense in this embodiment, which causes optimal support of the pipe wall 1 1. In this case, however, the fluid flow and the substance diffusion through the membrane holder 01 during later operation are not disturbed. In such a dense distribution of the foot points 09, these form the pipe wall 1 1, wherein the uniformly distributed pores 05 are formed by recesses between the foot points 09. In merging with the central cylinder 12 is shown in the
  • FIG. 5 shows a further embodiment of the membrane holder 01, in which a heating device 19 is integrated into the central cylinder 12 in a hollow receptacle 18. This is in the selected embodiment to a heating wire 20.
  • the connecting struts 08 and the pipe wall 1 1 are thermally conductive (indicated by heat arrows).
  • the result is an optimal homogeneous heating (for example in a range of 100 ° C) of the pipe wall 1 1 as a carrier of the interfacial membrane and thus an improvement of the diffusion process through the membrane during operation.
  • the energy input is minimized because only the constructive membrane holder 01 and not the fluid is heated.
  • this heater 19 can be controlled in operation in a simple manner.
  • FIG. 6 shows another embodiment of the membrane holder 01 with a tubular body in cross-section.
  • Central cylinder 12 To recognize individual areas 21 with permeable pores 05 in the pipe wall 1. 1 from Central cylinder 12 go in pairs oblique connecting struts 08, which terminate in continuous foot points 09 in the pipe wall 1 1. Here, the base ends a single sections 22 of the pipe wall 1 1. In the background, further connecting struts 08 are indicated in the view.
  • the central cylinder 12 in turn has the hollow receptacle 18 along its central
  • FIG. 7 shows the membrane holder 01 according to FIG. 7 in cross section.
  • the central cylinder 12 is shown with its central longitudinal axis 10. The continuous connection of the connecting struts 08 to the
  • Membrane holder 01 is the basis for a particularly efficient membrane system for cross-flow filtration for a variety of applications requiring a separation of substances in a fluid. Due to the particularly high pressure stability and permeability of the membrane holder, applications in the deep sea can also be implemented. In the case of applications in the measuring range, for example in an underwater mass spectrometer, the high permeability guarantees high measurement resolution and accuracy. An efficient thermal conductivity contributes to a faster detection of even the lowest concentrations of, for example, environmentally relevant substances and measured quantities. Due to the reliable reproducible porosity of the membrane holder accounts in this operation also relevant calibrations largely. A preparation of the membrane holder by means of three-dimensional printing is particularly advantageous. LIST OF REFERENCE NUMBERS

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

Des supports de membrane connus destinés à des membranes perméables, pour la séparation de substances en suspension ou dissoutes dans un fluide (« filtration à membrane à flux croisé ») présentent une porosité satisfaisante, mais une mauvaise résistance à la pression, et inversement. Le support de membrane (01) selon l'invention est caractérisé en ce que des entretoises de liaison (08), qui terminent dans des bases (09) sur la paroi tubulaire (11), sont réparties de façon symétrique et uniforme radialement autour du cylindre central (12) entre une paroi tubulaire (11) cylindrique présentant un axe longitudinal central (10) et un cylindre central (12) le long de l'axe longitudinal central (10). Les pores (05) sont répartis de façon prédéfinie dans la paroi tubulaire (11). Le support de membrane (01) selon l'invention garantit ainsi à la fois une résistance élevée à la pression et une porosité élevée, par exemple pour des utilisations en eaux profondes (jusqu'à 400 bar) dans un spectromètre de masse sous-marin présentant une sensibilité et une précision de mesure importante. Un dispositif de chauffage (19) éventuel dans le cylindre central (12) améliore le comportement de flux croisé du fait d'un réchauffement homogène, tout en ayant un faible apport énergétique susceptible d'être régulé. Le support de membrane (01) peut être fabriqué de manière reproductible par impression 3D. En plus d'être utilisée dans des appareils de mesure et lors de l'osmose, l'invention présente un usage préféré pour la séparation d'électrolyte.
PCT/DE2016/100555 2015-12-31 2016-11-28 Support de membrane avec soutien destiné à une membrane perméable, procédé de fabrication et d'utilisation d'un support de membrane avec soutien de ce type WO2017114522A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015017034.1 2015-12-31
DE102015017034.1A DE102015017034A1 (de) 2015-12-31 2015-12-31 Stützende Membranhalterung für eine semipermeable Membran, Verfahren zur Herstellung und Anwendung einer solchen stützenden Membranhalterung

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Citations (9)

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Publication number Priority date Publication date Assignee Title
EP0778073A1 (fr) * 1995-12-05 1997-06-11 T.A.M.I. Industries Elément tubulaire inorganique de filtration présentant une surface de filtration et une résistance mécanique accrues
GB2392114A (en) * 2002-08-23 2004-02-25 Glaxo Group Ltd Temperature controlled membrane interface device.
US6744045B2 (en) 2000-10-04 2004-06-01 University Of South Florida Portable underwater mass spectrometer
DE102007011107A1 (de) 2007-03-05 2008-09-11 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Leichtbaukonstruktion mit einer fraktal gegliederten Stützstruktur
US7434446B2 (en) 2004-10-01 2008-10-14 Pro-Oceanus Sytems, Inc. System for the transfer and sensing of gas dissolved in liquid under pressure
US20080296217A1 (en) * 2004-10-27 2008-12-04 Orelis Porous Monolithic Support for a Filtering Element
US7579587B2 (en) 2006-01-13 2009-08-25 Vancouver Island University Thermally assisted membrane introduction mass spectrometry (MIMS) interface and method of use thereof
US20140283626A1 (en) 2013-03-15 2014-09-25 Gary Michael McMurtry Tubular membrane gas and volatile compounds sampler for fluid introduction at atmospheric to high pressure
EP2832708A1 (fr) * 2012-03-30 2015-02-04 Asociación De Investigación De La Industria Del Juguete, Conexas Y Afines Procédé de fabrication de systèmes monolithiques de type céramique ou carboné

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015140355A1 (fr) * 2014-03-21 2015-09-24 Vito Nv (Vlaamse Instelling Voor Technologisch Onderzoek Nv) Membranes de filtration supportées et procédés de fabrication

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0778073A1 (fr) * 1995-12-05 1997-06-11 T.A.M.I. Industries Elément tubulaire inorganique de filtration présentant une surface de filtration et une résistance mécanique accrues
DE69619350T2 (de) * 1995-12-05 2002-10-10 T A M I Ind Nyons Anorganisches rohrförmiges Filterelement mit hoher Filteroberfläche und Festigkeit
US6744045B2 (en) 2000-10-04 2004-06-01 University Of South Florida Portable underwater mass spectrometer
GB2392114A (en) * 2002-08-23 2004-02-25 Glaxo Group Ltd Temperature controlled membrane interface device.
US7434446B2 (en) 2004-10-01 2008-10-14 Pro-Oceanus Sytems, Inc. System for the transfer and sensing of gas dissolved in liquid under pressure
US20080296217A1 (en) * 2004-10-27 2008-12-04 Orelis Porous Monolithic Support for a Filtering Element
US7579587B2 (en) 2006-01-13 2009-08-25 Vancouver Island University Thermally assisted membrane introduction mass spectrometry (MIMS) interface and method of use thereof
DE102007011107A1 (de) 2007-03-05 2008-09-11 Stiftung Alfred-Wegener-Institut Für Polar- Und Meeresforschung Leichtbaukonstruktion mit einer fraktal gegliederten Stützstruktur
EP2832708A1 (fr) * 2012-03-30 2015-02-04 Asociación De Investigación De La Industria Del Juguete, Conexas Y Afines Procédé de fabrication de systèmes monolithiques de type céramique ou carboné
US20140283626A1 (en) 2013-03-15 2014-09-25 Gary Michael McMurtry Tubular membrane gas and volatile compounds sampler for fluid introduction at atmospheric to high pressure

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