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WO2001080983A1 - Modules a membranes tubulaires servant a la separation physique de substances - Google Patents

Modules a membranes tubulaires servant a la separation physique de substances Download PDF

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Publication number
WO2001080983A1
WO2001080983A1 PCT/DE2001/001517 DE0101517W WO0180983A1 WO 2001080983 A1 WO2001080983 A1 WO 2001080983A1 DE 0101517 W DE0101517 W DE 0101517W WO 0180983 A1 WO0180983 A1 WO 0180983A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
tubular
membranes
membrane module
tubular membrane
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/DE2001/001517
Other languages
German (de)
English (en)
Inventor
Andreas Stern
Lutz SCHWÄBLEIN
Daniela Devantier-Stern
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to AU73851/01A priority Critical patent/AU7385101A/en
Priority to DE10191521T priority patent/DE10191521D2/de
Publication of WO2001080983A1 publication Critical patent/WO2001080983A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • B01D63/063—Tubular membrane modules with membranes on a surface of a support tube on the inner surface thereof

Definitions

  • the invention relates to a tubular membrane module for physical substance separation, consisting of a plurality of bundles combined, housed in a tubular casing, in which the medium to be separated is guided and the permeate can be separated via the wall and is then removed centrally or peripherally.
  • tube modules are also used for material separation in a membrane system, in which a tube-like membrane (tube membrane) is supported on its circumferential surface on the inside of a pressure-resistant tube.
  • This support tube is intended to prevent the mechanically sensitive tubular membrane from being destroyed due to the pressure prevailing inside it.
  • the raw solution (feed) is pumped through the interior of the tube membrane, while the permeate penetrating the wall of the tube membrane is made from a permeate surrounding the support tube.
  • the collecting tube is withdrawn and the concentrate leaves the tube membrane on the side opposite the raw solution supply.
  • the tubular membrane can be connected to the support tube in a fixed or exchangeable manner. Their inside diameter is usually in a range between 6 and 25 mm.
  • tube membrane modules are also described in this type of tube membrane, in which several tube membranes, each surrounded by a support tube, are accommodated in a common jacket tube.
  • a thin porous fleece as a so-called permeate spacer between the tubular membrane and the supporting tube in order to ensure the transverse transport of the permeate to outlet openings provided in the supporting tube.
  • the known tubular membrane modules the advantages of which are the low risk of clogging, the good cleaning options, the low pressure loss and a turbulent flow in the tubular membrane, which is important for mass transport, are disadvantageous in that, on the one hand, the packing density is low and, on the other hand, a high cost the manufacture is required.
  • the invention is therefore based on the object to develop the known insensitive and for the constriction of difficult media with respect to the required parameters well adjustable tubular membrane modules of the type mentioned that on the one hand the packing density and the ratio of raw solution volume to membrane area and thus the separation performance increases and on the other hand the cost of manufacturing the tubular membrane module is significantly reduced.
  • the basic idea of the invention is therefore that individual tube membranes with flat side walls, that is to say, for example with a triangular, square or hexagonal cross section, are combined to form a tube bundle with essentially no gaps between the tube membranes and opposite side walls in the tube bundle which are adjacent Support pipe membranes against each other over the entire surface, avoiding any cavities.
  • the on the contiguous Side pressures acting in the opposite direction cancel each other out, so that the resulting compressive force is zero and thus the individual tube membranes do not have to be supported by a support tube.
  • the pressure acting on the outer surfaces of the tube bundle is absorbed by a pressure-absorbing body which is dimensioned in accordance with the prevailing system pressure and has flat inner surfaces to which the outer flat side surfaces of the tube membranes of the tube bundle adjoin.
  • a pressure-absorbing body which is dimensioned in accordance with the prevailing system pressure and has flat inner surfaces to which the outer flat side surfaces of the tube membranes of the tube bundle adjoin.
  • the drainage layer consists of a porous but pressure-resistant material, which is able to remove the permeate separated off via the side walls of the tubular membranes and to absorb the surface pressure which starts from the side walls and is effective in the direction of the drainage layer.
  • the spaces between the side walls of the adjacent tubular membranes and between the side walls lying on the circumference of the tube bundle and the inner surfaces of the pressure-absorbing body are sealed in order to mix permeate and supplied raw solution or of permeate and removed concentrate to prevent.
  • a tubular membrane module designed in this way initially has all the advantageous properties of a conventional tubular module, such as high flow velocity, turbulent flow, good cleaning options, possibility of using highly viscous media, low feed and per pressure loss on the meats side, good material exchange, insensitivity to undissolved particles in the solution and low susceptibility to contamination.
  • the packing density and the ratio of feed volume to membrane area and thus the separation performance of the tubular membrane module according to the invention are significantly improved, and at the same time the investment costs can be considerably reduced due to the simple structure and the low manufacturing costs.
  • the removal of the separated permeate can either be peripheral, that is to say via the wall of the pressure-absorbing body, or central, that is to say via a pressure body which is arranged in the interior of the tubular membrane bundle and has inlet openings on the circumference, with an internal permeate channel and flat outer surfaces on which the flat side walls of the adjacent tubular membranes are supported via the drainage layer according to the invention.
  • the tubular membrane module 1 with a central permeate discharge comprises a multiplicity of tubular membranes 2 accommodated in a very small space with the cross-sectional profile of an equilateral triangle. This means that the edge lengths of all triangular tubular membranes 2 are identical.
  • the tubular membranes 2 are also arranged so that the planes Side walls (outer surfaces) 3 of adjacent tubular membranes 2 are congruent and that in their entirety they form a tubular membrane bundle without a cavity remaining between the tubular membranes.
  • a narrow space 4 remains between the opposite side walls 3 of the tubular membranes 2 and is filled with a porous, pressure-resistant drainage layer (permeate spacer) 5.
  • the tube membrane bundle formed in this way consisting of a full-surface area without a cavity, that is to say triangular tube membranes lying flat on all sides, is surrounded on the circumference by a pressure-absorbing body 6 whose wall thickness corresponds to the prevailing system pressure, the inner surfaces 7 of which are evenly profiled and with the interposition of the pressure-resistant, porous drainage layer 5 also lie over the entire surface of the flat side walls 3 of the tube membranes 2 forming the peripheral surface of the tube membrane bundle.
  • Another tubular pressure body 8 which has permeate inlet openings (not shown) in its jacket, is arranged coaxially to the pressure-receiving body 6 in the interior of the tube membrane bundle.
  • the circumferential surface of the tubular pressure body 8 is profiled hexagonally, so that the side walls 3 of the tubular membranes 2 opposite the pressure body 8 on its flat circumferential surfaces rest against the pressure body 8 with the interposition of the drainage layer 5 and the surface pressure emanating from these side walls is transmitted to the pressure body 8 ,
  • the jacket of the pressure body 8 is dimensioned according to the pressure to be absorbed.
  • both the seal 10 on the peripheral surface of the pressure-receiving body 6 and the central tubular pressure body 8 are omitted.
  • the raw solution (feed) is introduced at a certain pressure at one end face of the tube membrane module 1 into the tube membranes 2, that is, into the tube bundle sealed at the end face, while after the permeate has been separated off via the side walls 3 of the tube membranes 2, the remaining concentrate Leaves tubular membrane module on the opposite end.
  • the permeate flows through the drainage layer 5 into the permeate channel 9 of the pressure body 8 and is discharged via this almost without pressure.
  • the pressure acting on the inner surfaces of the tubular membranes 2 is applied via the pressure-resistant drainage layer 5 to the outer surface of the opposite one
  • the 4 "tubular membrane module shown by way of example in the drawing has a length of 1000 mm and has 352 individual tubular membranes 2 with the cross section of an equilateral triangle with an edge length of 5 mm.
  • a total 5 , 28m 2.

Landscapes

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

Abstract

La présente invention concerne un module à membranes tubulaires servant à la séparation de substances, ledit module étant constitué de membranes tubulaires (2) rassemblées en un faisceau tubulaire, présentant des parois latérales planes (3), et d'un corps d'absorption de pression (6) disposé à la périphérie du faisceau tubulaire et présentant des surfaces internes planes (7). Lors de l'évacuation centrale de perméat, un corps d'appui (8) comprenant un canal de perméat (9) et des surfaces externes planes, se trouve à l'intérieur du faisceau tubulaire. Les parois latérales planes (3) adhèrent aux parois latérales planes voisines des membranes tubulaires (3) ou aux surfaces internes planes du corps d'absorption de pression (6) et éventuellement aux surfaces externes planes du corps d'appui (8), grâce à une couche de drainage poreuse (5) servant au transport du perméat, mais résistant à la pression de façon à absorber les forces de compression. En plus des avantages connus apportés par les membranes tubulaires, le module à membranes tubulaires de l'invention peut être réalisé avec des moyens réduits de manière significative et permet, grâce à sa densité de remplissage élevée, d'obtenir des capacités de séparation hautement améliorées.
PCT/DE2001/001517 2000-04-20 2001-04-12 Modules a membranes tubulaires servant a la separation physique de substances Ceased WO2001080983A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU73851/01A AU7385101A (en) 2000-04-20 2001-04-12 Tubular membrane module for the physical separation of substances
DE10191521T DE10191521D2 (de) 2000-04-20 2001-04-12 Rohrmembranmodul zur physikalischen Stofftrennung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10021092.9 2000-04-20
DE2000121092 DE10021092A1 (de) 2000-04-20 2000-04-20 Rohrmembranmodul zur physikalischen Stofftrennung

Publications (1)

Publication Number Publication Date
WO2001080983A1 true WO2001080983A1 (fr) 2001-11-01

Family

ID=7640357

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2001/001517 Ceased WO2001080983A1 (fr) 2000-04-20 2001-04-12 Modules a membranes tubulaires servant a la separation physique de substances

Country Status (3)

Country Link
AU (1) AU7385101A (fr)
DE (2) DE10021092A1 (fr)
WO (1) WO2001080983A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10220505A1 (de) * 2002-05-08 2003-12-11 Daimler Chrysler Ag Rohrmembranmodul
US11760669B2 (en) 2018-08-09 2023-09-19 Go Higher Environment Group Co., Ltd. Flat membrane support plate

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452407A (en) * 1945-01-12 1948-10-26 Earl C Walker Filter
US3708069A (en) * 1970-08-13 1973-01-02 Aqua Chem Inc Reverse osmosis membrane module and apparatus using the same
US3737043A (en) * 1972-06-12 1973-06-05 Aqua Chem Inc Membrane module
WO1998019777A2 (fr) * 1996-11-06 1998-05-14 Akzo Nobel N.V. Module membranaire pour traitement fluidique specifique
EP0947237A1 (fr) * 1998-03-13 1999-10-06 Rochem RO-Wasserbehandlung GmbH Dispositif de séparation de milieux liquides chargés d'impuretés

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2221951C2 (de) * 1972-04-27 1983-04-28 The Dow Chemical Co., 48640 Midland, Mich. Membraneinheit zum Reinigen eines Flüssigkeitsgemisches durch Anwendung der umgekehrten Osmose

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452407A (en) * 1945-01-12 1948-10-26 Earl C Walker Filter
US3708069A (en) * 1970-08-13 1973-01-02 Aqua Chem Inc Reverse osmosis membrane module and apparatus using the same
US3737043A (en) * 1972-06-12 1973-06-05 Aqua Chem Inc Membrane module
WO1998019777A2 (fr) * 1996-11-06 1998-05-14 Akzo Nobel N.V. Module membranaire pour traitement fluidique specifique
EP0947237A1 (fr) * 1998-03-13 1999-10-06 Rochem RO-Wasserbehandlung GmbH Dispositif de séparation de milieux liquides chargés d'impuretés

Also Published As

Publication number Publication date
DE10191521D2 (de) 2002-08-29
DE10021092A1 (de) 2001-10-31
AU7385101A (en) 2001-11-07

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