DE3920562C1 - Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process - Google Patents
Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion processInfo
- Publication number
- DE3920562C1 DE3920562C1 DE3920562A DE3920562A DE3920562C1 DE 3920562 C1 DE3920562 C1 DE 3920562C1 DE 3920562 A DE3920562 A DE 3920562A DE 3920562 A DE3920562 A DE 3920562A DE 3920562 C1 DE3920562 C1 DE 3920562C1
- Authority
- DE
- Germany
- Prior art keywords
- plate
- microns
- porous
- rigid plate
- rigid
- 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.)
- Expired - Lifetime
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 7
- 229920005597 polymer membrane Polymers 0.000 title claims abstract 6
- 238000001471 micro-filtration Methods 0.000 title abstract description 3
- 238000000108 ultra-filtration Methods 0.000 title abstract description 3
- 239000002184 metal Substances 0.000 claims abstract description 4
- 239000004952 Polyamide Substances 0.000 claims abstract 2
- 229920002647 polyamide Polymers 0.000 claims abstract 2
- 239000002861 polymer material Substances 0.000 claims abstract 2
- 238000005266 casting Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 238000001556 precipitation Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims 2
- 239000002033 PVDF binder Substances 0.000 claims 1
- 239000004695 Polyether sulfone Substances 0.000 claims 1
- 239000011248 coating agent Substances 0.000 claims 1
- 229920006393 polyether sulfone Polymers 0.000 claims 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 abstract 1
- 239000012466 permeate Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 229920002522 Wood fibre Polymers 0.000 description 1
- 210000001601 blood-air barrier Anatomy 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002952 polymeric resin Substances 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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
- B01D69/108—Inorganic support material
-
- 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
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0002—Organic membrane manufacture
- B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
- B01D67/0016—Coagulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2325/00—Details relating to properties of membranes
- B01D2325/04—Characteristic thickness
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Inorganic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
Die Erfindung bezieht sich auf Polymer Anorganische-Composite membranen zum Einsatz in der Mikro- und Ultrafiltration und ein Verfahren zu deren Herstellung.The invention relates to polymer inorganic composites membranes for use in micro and ultrafiltration and a Process for their production.
Bis heute sind folgende synthetische Membranarten aus den unterschiedlichsten Materialien bekannt:To date, the following synthetic membrane types are from the various materials known:
- Holzefasermembranen
- Kapillarmembranen
- Rohrmembranen
- Flachmembranen.- Wood fiber membranes
- capillary membranes
- tubular membranes
- flat membranes.
Diese werden bei Membrantrennverfahren einge setzt. Außer Rohrmembranen sind diese Membranarten im allge meinen durch große Flexibilität charakterisiert. These are used in membrane separation processes puts. In addition to tubular membranes, these membrane types are common mean characterized by great flexibility.
Es ist bekannt, daß insbesondere bei der Montage von Plattenmo duln die Handhabung flexibler Flachmembranen sehr schwierig ist. Es sei auf die Rolleigenschaften der Membranen hinge wiesen. Oft werden deshalb die flexiblen Membranen auf Platten geklebt.It is known that especially when mounting Plattenmo It is very difficult to handle flexible flat membranes is. It depends on the rolling properties of the membranes grasslands. That is why the flexible membranes are often placed on plates glued.
Die vorliegende Erfindung löst das Problem auf einfache Weise. Erfindungsgemäß wird dieses dadurch erreicht, daß die Membran bildung (2) direkt auf einer porösen und starren Platte (1) erfolgt, die gleichzeitig eine gleichmäßige Permeatabfuhr ge währleistet. Hierbei kann die starre Trägerplatte (1) ein po röses Sintermetall, Sinterglas oder Sinterkeramik sein, aber auch faserige Gewebe und Vliese, insbesonder aus Glas-, Kohle- oder Metallfaser. Bei diesen Materialien werden vor teilhaft zur Verstärkung Polymerharze benutzt, die mit Pyro lyseverfahren porös und starr gemacht werden können.The present invention solves the problem in a simple manner. According to the invention this is achieved in that the membrane formation ( 2 ) takes place directly on a porous and rigid plate ( 1 ) which at the same time ensures uniform permeate removal. Here, the rigid carrier plate ( 1 ) can be a porous sintered metal, sintered glass or sintered ceramic, but also fibrous fabrics and nonwovens, in particular made of glass, carbon or metal fibers. In these materials, polymeric resins are used before for reinforcement, which can be made porous and rigid with pyrolysis processes.
Weitere Vorteile des starren Platteneinsatzes sind die guten Gegebenheiten für beidseitige Membranpolymerbeschichtungen. Die radiale Fortführung des Permeates in Richtung der größeren Radien, kann aufgrund einer gleichmäßigen und staufreien Per meataufnahme sichergestellt werden. Other advantages of the rigid insert are the good ones Conditions for double-sided membrane polymer coatings. The radial continuation of the permeate in the direction of the larger one Radii, due to an even and congestion-free per can be ensured.
Die Membranbildung erfolgt nach dem sogenannten Phaseninver sionsprozeß. Dazu sollte ein Polymer in an sich bekannter Weise in einem oder mehreren Lösungsmitteln gelöst werden. Bei Bedarf können Nichtlösungsmittel oder Salze zugefügt werden.The membrane formation takes place after the so-called phase inverter process. For this purpose, a polymer should be known per se Be solved in one or more solvents. If necessary, non-solvents or salts can be added will.
Die so entstandene homogene Gießlösung wird flächenhaft auf die starre und poröse Platte aufgetragen, wobei die Beschich tungsstärke 20 bis 1000 µm beträgt.The resulting homogeneous pouring solution is spread over a large area applied the rigid and porous plate, the Beschich thickness is 20 to 1000 µm.
Die Viskosität der Gießlösung soll so eingestellt werden, daß die Gießlösung in den Plattenquerschnitt nur teilweise ein dringt aber nicht durchläuft.The viscosity of the casting solution should be adjusted so that only partially pour the casting solution into the plate cross-section does not penetrate.
Die Gießlösung wird mit Hilfe der Auftragseinrichtung (3) auf die poröse und starre Platte (1) aufgetragen, wobei zwischen der Auftragseinrichtung und der porösen Platte ein fester Abstand von 20 bis 1000 µm eingestellt wird. Die so beschichtete Platte wird anschließend mit einem Winkel zwischen Plattenoberfläche und Oberfläche der Fällflüssigkeit von kleiner gleich 90° in das Fällbad eingeführt (Fig. I). The casting solution is applied to the porous and rigid plate ( 1 ) with the aid of the application device ( 3 ), a fixed distance of 20 to 1000 μm being set between the application device and the porous plate. The plate coated in this way is then introduced into the precipitation bath at an angle between the plate surface and the surface of the precipitation liquid of less than or equal to 90 ° ( FIG. I).
Alternativ hierzu wird die Gießlösung auf der porösen und starren Platte (1) beidseitig aufgetragen, so daß die Platte senkrecht mit zwischen 20 und 1000 µm fest eingestelltem Abstand zu der stehenden Polymerauftrags einrichtung nach unten in das Fällbad (4) geführt wird (Fig. II).Alternatively, the casting solution is applied to the porous and rigid plate ( 1 ) on both sides, so that the plate is guided vertically with a fixed distance between 20 and 1000 microns to the standing polymer application device down into the precipitation bath ( 4 ) ( Fig. II ).
Die Tauchzeit im Fällbad kann zwischen 1 und 120 min betragen.The immersion time in the precipitation bath can be between 1 and 120 min be.
Das unerwünschte Aufrollen der Membran im Zuge der Trocknung wird mit Plattenmembranen unterbunden.The unwanted rolling up of the membrane in the course of Drying is prevented with plate membranes.
In diesem Fall kann das in der vom Polymer nicht durchgedrun gende freien Querschnittszone gewonnene Permeat in Richtung des Außenrandes der Membranplatte abgeführt werden.In this case, the polymer cannot run through it permeate obtained in the direction of the free cross-sectional zone of the outer edge of the membrane plate.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3920562A DE3920562C1 (en) | 1989-06-23 | 1989-06-23 | Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3920562A DE3920562C1 (en) | 1989-06-23 | 1989-06-23 | Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process |
Publications (1)
Publication Number | Publication Date |
---|---|
DE3920562C1 true DE3920562C1 (en) | 1990-07-12 |
Family
ID=6383400
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE3920562A Expired - Lifetime DE3920562C1 (en) | 1989-06-23 | 1989-06-23 | Plate membrane used in micro- and ultra-filtration - obtd. by forming polymer membrane layer on rigid and porous plate through phase inversion process |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE3920562C1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0674937A2 (en) * | 1994-03-30 | 1995-10-04 | Corning Incorporated | Non-porous polymeric membrane on a porous inorganic support |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2037186A1 (en) * | 1969-07-31 | 1971-02-18 | Hydronautics, Ine , Laurel, Md (VStA) | Tubular component and process for its manufacture and use |
DE1767543A1 (en) * | 1967-05-22 | 1971-04-29 | American Standard Inc | Method and device for attaching a highly effective membrane filter body to the inside of a porous support tube |
DE2432049A1 (en) * | 1974-07-04 | 1976-01-22 | Boehringer Sohn Ingelheim | COMPOSITE OF MEMBRANE FILTERS AND POROESE MATERIAL AND ITS USE |
DE3029153A1 (en) * | 1980-07-31 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | Gas permeable polymer membrane for analysis devices - has perforated metal or glass backing disc |
DE3546328A1 (en) * | 1984-12-29 | 1986-07-03 | NGK Insulators Ltd., Nagoya, Aichi | FILTER AND METHOD FOR PRODUCING THE FILTER |
DE3515025A1 (en) * | 1985-04-25 | 1986-10-30 | Altenburger Electronic Gmbh, 7633 Seelbach | Process for producing a filter having pores of a predetermined and roughly equal micro size and a filter produced by this process |
-
1989
- 1989-06-23 DE DE3920562A patent/DE3920562C1/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1767543A1 (en) * | 1967-05-22 | 1971-04-29 | American Standard Inc | Method and device for attaching a highly effective membrane filter body to the inside of a porous support tube |
DE2037186A1 (en) * | 1969-07-31 | 1971-02-18 | Hydronautics, Ine , Laurel, Md (VStA) | Tubular component and process for its manufacture and use |
DE2432049A1 (en) * | 1974-07-04 | 1976-01-22 | Boehringer Sohn Ingelheim | COMPOSITE OF MEMBRANE FILTERS AND POROESE MATERIAL AND ITS USE |
DE3029153A1 (en) * | 1980-07-31 | 1982-03-04 | Siemens AG, 1000 Berlin und 8000 München | Gas permeable polymer membrane for analysis devices - has perforated metal or glass backing disc |
DE3546328A1 (en) * | 1984-12-29 | 1986-07-03 | NGK Insulators Ltd., Nagoya, Aichi | FILTER AND METHOD FOR PRODUCING THE FILTER |
DE3515025A1 (en) * | 1985-04-25 | 1986-10-30 | Altenburger Electronic Gmbh, 7633 Seelbach | Process for producing a filter having pores of a predetermined and roughly equal micro size and a filter produced by this process |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0674937A2 (en) * | 1994-03-30 | 1995-10-04 | Corning Incorporated | Non-porous polymeric membrane on a porous inorganic support |
EP0674937A3 (en) * | 1994-03-30 | 1995-11-22 | Corning Inc | Non-porous polymeric membrane on a porous inorganic support. |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8100 | Publication of patent without earlier publication of application | ||
D1 | Grant (no unexamined application published) patent law 81 | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |