DE19811708A1 - Extremely thin ultrafiltration or nanofiltration membrane production - Google Patents

Extremely thin ultrafiltration or nanofiltration membrane production

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Publication number
DE19811708A1
DE19811708A1 DE19811708A DE19811708A DE19811708A1 DE 19811708 A1 DE19811708 A1 DE 19811708A1 DE 19811708 A DE19811708 A DE 19811708A DE 19811708 A DE19811708 A DE 19811708A DE 19811708 A1 DE19811708 A1 DE 19811708A1
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DE
Germany
Prior art keywords
ceramic
green
ultrafiltration
nanofiltration membrane
foil
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.)
Granted
Application number
DE19811708A
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German (de)
Other versions
DE19811708B4 (en
Inventor
Bernd Penth
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.)
Evonik Operations GmbH
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Creavis Gesellschaft fuer Technologie und Innovation mbH
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
Priority claimed from DE1997141498 external-priority patent/DE19741498B4/en
Priority to DE1997141498 priority Critical patent/DE19741498B4/en
Application filed by Creavis Gesellschaft fuer Technologie und Innovation mbH filed Critical Creavis Gesellschaft fuer Technologie und Innovation mbH
Priority to DE19811708A priority patent/DE19811708B4/en
Priority to US09/308,221 priority patent/US6299778B1/en
Priority to CA 2272310 priority patent/CA2272310C/en
Priority to AT98952595T priority patent/ATE297247T1/en
Priority to AT98948988T priority patent/ATE284756T1/en
Priority to CA 2272318 priority patent/CA2272318A1/en
Priority to DE59812853T priority patent/DE59812853D1/en
Priority to EP19980952595 priority patent/EP0946270B1/en
Priority to EP98951432A priority patent/EP0939669A1/en
Priority to EP98950049A priority patent/EP0959981A1/en
Priority to ES98948988T priority patent/ES2232963T3/en
Priority to PCT/EP1998/005946 priority patent/WO1999015257A1/en
Priority to US09/308,219 priority patent/US6309545B1/en
Priority to PCT/EP1998/005939 priority patent/WO1999015262A1/en
Priority to DE59812384T priority patent/DE59812384D1/en
Priority to PCT/EP1998/005938 priority patent/WO1999015272A1/en
Priority to PCT/EP1998/005937 priority patent/WO1999015260A1/en
Priority to EP98948988A priority patent/EP0951355B1/en
Priority to CA 2272314 priority patent/CA2272314A1/en
Priority to US09/308,230 priority patent/US6299668B1/en
Priority to CA 2272312 priority patent/CA2272312C/en
Priority to US09/308,222 priority patent/US6340379B1/en
Priority to NO992433A priority patent/NO992433L/en
Priority to NO992432A priority patent/NO992432L/en
Priority to NO992435A priority patent/NO992435L/en
Priority to NO992434A priority patent/NO992434L/en
Publication of DE19811708A1 publication Critical patent/DE19811708A1/en
Priority to US09/941,587 priority patent/US6841075B2/en
Priority to US09/956,915 priority patent/US20020023419A1/en
Publication of DE19811708B4 publication Critical patent/DE19811708B4/en
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/54—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms
    • B01D46/543—Particle separators, e.g. dust precipitators, using ultra-fine filter sheets or diaphragms using membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4263—Means for active heating or cooling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/66—Regeneration of the filtering material or filter elements inside the filter
    • B01D46/80—Chemical processes for the removal of the retained particles, e.g. by burning
    • B01D46/84—Chemical processes for the removal of the retained particles, e.g. by burning by heating only
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/22—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion
    • B01D53/228—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by diffusion characterised by specific membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/32—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by electrical effects other than those provided for in group B01D61/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/8671—Removing components of defined structure not provided for in B01D53/8603 - B01D53/8668
    • B01D53/8675—Ozone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/34—Chemical or biological purification of waste gases
    • B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
    • B01D53/86—Catalytic processes
    • B01D53/88—Handling or mounting catalysts
    • B01D53/885—Devices in general for catalytic purification of waste gases
    • 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
    • B01D67/0081—After-treatment of organic or inorganic membranes
    • B01D67/0083—Thermal after-treatment
    • 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
    • B01D69/12—Composite membranes; Ultra-thin membranes
    • B01D69/1213—Laminated layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/02—Inorganic material
    • B01D71/024—Oxides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J35/00—Catalysts, in general, characterised by their form or physical properties
    • B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
    • B01J35/58—Fabrics or filaments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/0215—Coating
    • B01J37/0225—Coating of metal substrates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
    • B01J37/02—Impregnation, coating or precipitation
    • B01J37/03—Precipitation; Co-precipitation
    • B01J37/031—Precipitation
    • B01J37/033—Using Hydrolysis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/30—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for treatment of exhaust gases from IC Engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Catalysts (AREA)
  • Filtering Materials (AREA)

Abstract

A ceramic ultrafiltration or nanofiltration membrane is produced by laminating a green nanocrystalline ceramic powder foil onto a ceramic microfiltration membrane and then sintering. A ceramic ultrafiltration or nanofiltration membrane is produced by peeling a green ceramic foil of nanocrystalline powder from its production backing foil, laminating it onto a flat ceramic microfiltration membrane of porous or woven special steel and thermally consolidating the foil.

Description

Diese Anmeldung ist eine Zusatzanmeldung zu 197 41 498.2 und beschreibt die Herstellung von keramischen Ultrafiltrations- und Nanofiltrationsmembranen durch Auflaminieren einer separat hergestellten grünen (ungesinterten und binderhaltigen) Folie aus nanokristalliner Keramik.This application is an additional application to 197 41 498.2 and describes the Manufacture of ceramic ultrafiltration and nanofiltration membranes by laminating a separately manufactured green (unsintered and binder-containing) film made of nanocrystalline ceramic.

In der Anmeldung 197 41 498.2 ist ein Verfahren zur Herstellung keramischer Membranen beschrieben, welches vor allem Bedeutung besitzt für die Herstellung keramischer Membranen auf porösen, metallischen Trägern. Von besonderem Interesse sind dabei wegen ihres niedrigen Preises Edelstahlgewebe mit Maschenweiten oberhalb 50-70 µm als Träger für diese Membranen, wobei Maschenweiten von 90 µm sehr gut geeignet sind.In application 197 41 498.2 there is a process for producing ceramic Described membranes, which is of particular importance for the Manufacture of ceramic membranes on porous, metallic supports. From Stainless steel mesh is of particular interest because of its low price with mesh sizes above 50-70 µm as a support for these membranes, mesh sizes of 90 µm are very suitable.

Die nach dem dort beschriebenen Verfahren herstellbaren Membranen besitzen Poren, die je nach verwendetem Aluminiumoxidtyp zwischen 0,1 und 0,6 mittlere Porenweite liegen. Bei der Verwendung des sehr gut geeigneten Typs ALCOA SC3000SG mit einer mittleren Korngröße von 0,7 µm erhält man eine mittlere Porenweite zwischen 0,35 µm und 0,5 µm. Bei der Verwendung der Typen ALCOA SC2000SG, SC1200SG, SC530SG mit mittleren Korngrößen von 0,9-1,3 µm erhält man entsprechend größere mittlere Porenweiten zwischen 0,5 µm und 0,9 µm. Bei der Verwendung von Typen mit noch größerer mittlerer Porenweite sinkt die Bindekraft zwischen den Keramikpartikeln, so daß die mechanische Festigkeit derartiger Membranen geringer ist.Have the membranes that can be produced by the process described there Pores that are between 0.1 and 0.6 depending on the type of alumina used average pore size. When using the very suitable type ALCOA SC3000SG with an average grain size of 0.7 µm is obtained average pore size between 0.35 µm and 0.5 µm. When using the Types ALCOA SC2000SG, SC1200SG, SC530SG with medium grain sizes of 0.9-1.3 µm gives correspondingly larger average pore sizes between 0.5 µm and 0.9 µm. When using types with even larger medium Pore size decreases the binding force between the ceramic particles, so that the mechanical strength of such membranes is lower.

Bei dem Typ ALCOA A16SG mit mittlerer Korngröße im Bereich 0,45 µm ergibt sich eine mittlere Porenweite von 0,2 µm, wobei es bei dieser Korngröße bereits zu Schwundrissen und damit zu einer unbrauchbaren Membran kommen kann. Bei der Verwendung noch feinerer Pulver, z. B. ALCOA Premalox 10 mit mittleren Korngrößen von 0,2 µm kommt es noch stärker zu erheblichen Schwundrissen.For the type ALCOA A16SG with average grain size in the range 0.45 µm an average pore size of 0.2 µm, with this grain size already shrinkage cracks and thus an unusable membrane can occur. When using even finer powder, e.g. B. ALCOA Premalox 10 with average grain sizes of 0.2 µm, there are even more significant ones Shrinkage cracks.

Nachteil des beschriebenen Verfahrens scheint es daher zu sein, daß mit reproduzierbarer Güte nur Membranen im Bereich der Mikrofiltration oberhalb 0,1 µm, eher noch oberhalb 0,2 µm bis 1 µm herstellbar sind, wobei die besten Qualitäten im Bereich 0,3-0,4 µm Porenweite erreicht werden.The disadvantage of the described method therefore seems to be that with reproducible quality only membranes in the area of microfiltration above 0.1 µm, rather above 0.2 µm to 1 µm, the best Qualities in the range of 0.3-0.4 µm pore size can be achieved.

Ziel der vorliegenden Erfindung war es, die nach dem beschriebenen Verfahren hergestellten Membranen so zu modifizieren, daß Membranen im Bereich der Ultrafiltration und der Nanofiltration entstehen.The aim of the present invention was to use the method described Modify membranes produced so that membranes in the area of Ultrafiltration and nanofiltration arise.

Dieses Ziel wird erfindungsgemäß dadurch erreicht, daß ein separat als Folie hergestellter keramischer Ultrafiltrationsgrünling oder Nanofiltrationsgrünling, der sich auf einer abziehbaren Hilfsfolie befindet, auf die beschriebene Mikrofiltrationsmembran auflaminiert und durch Erhitzen keramisiert wird.This object is achieved in that a separately as a film manufactured ceramic ultrafiltration green or nanofiltration green, the is on a removable auxiliary film, on the described Laminated microfiltration membrane and ceramized by heating.

Auf diese Weise können sehr dünne trennaktive Schichten aus nanokristallinem Zirkonoxid auflaminiert werden zu Schichten mit mittleren Porenweiten von 20-40 nm, oder aus Aluminiumoxiden unterschiedlicher Teilchengrößen zu mittleren Porenweiten von je nach verwendetem Typ von 4-6 nm, oder auch von 80-100 nm oder anderen Porenweiten. Ebenso gut geeignet ist nanokristallines Titandioxid.In this way, very thin separating layers made of nanocrystalline Zirconia are laminated to layers with average pore sizes of  20-40 nm, or from aluminum oxides of different particle sizes to medium Pore widths of 4-6 nm depending on the type used, or of 80-100 nm or other pore sizes. Nanocrystalline is equally well suited Titanium dioxide.

Die sich ergebende Porenweite hängt dabei direkt von der Größe der verwendeten Teilchen ab. Im Bereich bis 10 nm entspricht die in der entstehenden Membran erreichte Porenweite etwa der Teilchengröße, im Bereich von 100 nm und größer entspricht die erreichte Porenweite etwa der halben Teilchengröße.The resulting pore size depends directly on the size of the used particles. In the range up to 10 nm corresponds to that in the resulting membrane reached pore size in the range of the particle size of 100 nm and larger corresponds to the pore size achieved about half Particle size.

Die erfindungsgemäß als Grünkörper aufzulaminierende Schicht wird nach dem Stand der Technik aus keramischem Pulver und organischen Bindemitteln in einem separaten Herstellprozeß auf einer Hilfsfolie produziert und in einem kontinuierlichen Verfahren von der Hilfsfolie auf die nach 197 41 498.2 hergestellte, keramische Mikrofiltrationsmembran übertragen und keramisiert.The layer to be laminated on as a green body according to the invention is after the State of the art made of ceramic powder and organic binders a separate manufacturing process produced on an auxiliary film and in one continuous process from the auxiliary film to the after 197 41 498.2 manufactured, ceramic microfiltration membrane transferred and ceramized.

Der große Vorteil dieses Verfahrens liegt in der Tatsache, daß auf diese Weise wesentlich dünnere trennaktive Membranschichten hergestellt werden können, als nach dem Stand der Technik. Nach dem Stand der Technik wird der zu modifizierende Mikrofiltrations-Membrankörper direkt mit einem binderhaltigen Medium im flüssigen Zustand beschichtet. Dadurch dringt der grüne Schlicker in die Poren des zu beschichtenden Trägers ein, wodurch, zur Vermeidung von Fehlstellen, eine relativ dicke, grüne Schicht erforderlich ist.The great advantage of this method lies in the fact that it works in this way much thinner separating active membrane layers can be produced, than according to the prior art. According to the state of the art modifying microfiltration membrane bodies directly with a binder-containing one Medium coated in the liquid state. This causes the green slip to penetrate the pores of the support to be coated, thereby, to avoid Flaws, a relatively thick, green layer is required.

Die nach dem Stand der Technik vergleichsweise dicke Schicht bringt mehrere Nachteile mit sich. So bedingt sie zum einen langsame Aufheizprozesse mit aufwendigen Programmen. Weiterhin nimmt bei der Verwendung für die Filtration der Filtrationswiderstand durch die längeren Wege des Filtrates zu und zusätzlich kommt es zu einer größeren Neigung der Membran zur Verblockung durch den zunehmend symmetrischen Charakter der filteraktiven Schicht.The layer which is comparatively thick according to the prior art brings several Disadvantages with it. On the one hand, it causes slow heating processes complex programs. Furthermore, when used for the Filtration the filtration resistance through the longer paths of the filtrate to and in addition, the membrane tends to become blocked due to the increasingly symmetrical character of the filter-active layer.

Der Keramisierungsvorgang nach dem erfindungsgemäßen Verfahren erfolgt thermisch, günstigerweise mittels einer Infrarotheizung. Wegen der niedrigen Schichtdicke der entstehenden Nano- oder Ultrafiltrationsmembran ist die Aufheizrate nicht kritisch. Die nach dem Stand der Technik einzuhaltenden, aufwendigen Aufheizprogramme von binderhaltigen Keramiken können damit umgangen werden. Heizzeiten von 1 Minute unter Infrarotstrahlung genügen somit bereits zu einer Verfestigung, wobei unter diesen Bedingungen weder Blasen noch Risse auftreten.The ceramization process takes place according to the method according to the invention thermal, favorably by means of infrared heating. Because of the low The layer thickness of the resulting nano or ultrafiltration membrane is Heating rate not critical. The state-of-the-art complex heating programs for binder-containing ceramics can be done with it be circumvented. Heating times of 1 minute under infrared radiation are sufficient thus already to a solidification, whereby under these conditions neither Bubbles still appear cracks.

Damit ergibt sich für die Herstellung dieser Membran die Möglichkeit der Anwendung eines Durchlaufverfahrens. So kann die zu laminierende grüne Keramikfolie über eine Infrarotstrecke von 30 cm mit einer Transportgeschwindigkeit von 0,5 cm/sec auf die als Träger fungierende Mikrofiltrationsmembran aus Edelstahl-Keramik aufgetragen und verfestigt werden.This results in the possibility of producing this membrane Use of a continuous process. So the green one to be laminated Ceramic film over an infrared distance of 30 cm with a Transport speed of 0.5 cm / sec to the one that acts as a carrier Microfiltration membrane made of stainless steel ceramic applied and solidified become.

Claims (2)

1. Herstellung von keramischen Membranen für die Ultrafiltration und die Nanofiltration, gekennzeichnet dadurch, daß auf eine keramische Mikro­ filtrations-Flachmembran auf porösem Edelstahl oder Edelstahlgewebe eine separat auf einer Trägerfolie hergestellte grüne, keramische Folie aus nanokristallinem Pulver von der Trägerfolie abgezogen, auflaminiert und thermisch verfestigt wird.1. Production of ceramic membranes for ultrafiltration and nanofiltration, characterized in that on a ceramic microfiltration flat membrane on porous stainless steel or stainless steel mesh, a green, ceramic film made of nanocrystalline powder is separately removed from the carrier film, laminated and thermally is solidified. 2. Herstellung von keramischen Membranen nach Anspruch 1, gekennzeichnet dadurch, daß die keramische Mikrofiltrations-Flachmembran als Rollenmaterial kontinuierlich mit der ebenfalls als Rollenmaterial vorliegenden grünen Folie im Durchlaufverfahren laminiert und der entstehende Verbund im Durchlaufverfahren thermisch verfestigt wird.2. Production of ceramic membranes according to claim 1, characterized in that the ceramic microfiltration flat membrane as a roll material continuously with the green film also available as a roll material in the Continuous process laminated and the resulting composite in Continuous process is thermally solidified.
DE19811708A 1997-09-20 1998-03-18 Production of ceramic membranes Expired - Lifetime DE19811708B4 (en)

Priority Applications (29)

Application Number Priority Date Filing Date Title
DE1997141498 DE19741498B4 (en) 1997-09-20 1997-09-20 Production of a ceramic stainless steel mesh composite
DE19811708A DE19811708B4 (en) 1997-09-20 1998-03-18 Production of ceramic membranes
PCT/EP1998/005938 WO1999015272A1 (en) 1997-09-20 1998-09-18 Catalytically active permeable composite material, method for producing said composite material, and use of the same
PCT/EP1998/005937 WO1999015260A1 (en) 1997-09-20 1998-09-18 Method for separating mixtures of substances using a material pervious to said substances
AT98952595T ATE297247T1 (en) 1997-09-20 1998-09-18 PERMEABLE COMPOSITE MATERIAL, METHOD FOR THE PRODUCTION THEREOF AND USE OF THE PERMEABLE COMPOSITE MATERIAL
AT98948988T ATE284756T1 (en) 1997-09-20 1998-09-18 METHOD FOR PRODUCING A CATALYTICALLY ACTIVE, PERMEABLE COMPOSITE MATERIAL
CA 2272318 CA2272318A1 (en) 1997-09-20 1998-09-18 Method for separating mixtures of substances using a material pervious to said substances
DE59812853T DE59812853D1 (en) 1997-09-20 1998-09-18 SUBSTITUTED COMPOSITE MATERIAL, METHOD FOR THE PRODUCTION AND USE OF THE SUBSTITUTED COMPOSITE MATERIAL
EP19980952595 EP0946270B1 (en) 1997-09-20 1998-09-18 Permeable composite material, method for producing said composite material, and use of the same
EP98951432A EP0939669A1 (en) 1997-09-20 1998-09-18 Gas filter, method for producing a gas filter and use of said gas filter
EP98950049A EP0959981A1 (en) 1997-09-20 1998-09-18 Method for separating mixtures of substances using a material pervious to said substances
ES98948988T ES2232963T3 (en) 1997-09-20 1998-09-18 PROCEDURE FOR THE PREPARATION OF A COMPOSITE MATERIAL, CATALYTICALLY ACTIVE, PERMEABLE TO SUBSTANCES.
PCT/EP1998/005946 WO1999015257A1 (en) 1997-09-20 1998-09-18 Gas filter, method for producing a gas filter and use of said gas filter
US09/308,219 US6309545B1 (en) 1997-09-20 1998-09-18 Permeable composite material, method for producing said composite material, and use of the same
PCT/EP1998/005939 WO1999015262A1 (en) 1997-09-20 1998-09-18 Permeable composite material, method for producing said composite material, and use of the same
DE59812384T DE59812384D1 (en) 1997-09-20 1998-09-18 METHOD FOR PRODUCING A CATALYTICALLY ACTIVE, SUBSTITUTED COMPOSITE MATERIAL
US09/308,221 US6299778B1 (en) 1997-09-20 1998-09-18 Catalytically active permeable composite material, method for producing said composite material, and use of the same
CA 2272310 CA2272310C (en) 1997-09-20 1998-09-18 Catalytically active permeable composite material, method for producing said composite material, and use of the same
EP98948988A EP0951355B1 (en) 1997-09-20 1998-09-18 Method for producing catalytically active permeable composite material
CA 2272314 CA2272314A1 (en) 1997-09-20 1998-09-18 Gas filter, method for producing a gas filter and use of said gas filter
US09/308,230 US6299668B1 (en) 1997-09-20 1998-09-18 Method for separating mixtures of substances using a material pervious to said substances
CA 2272312 CA2272312C (en) 1997-09-20 1998-09-18 Permeable composite material, method for producing said composite material, and use of the same
US09/308,222 US6340379B1 (en) 1997-09-20 1998-09-18 Gas filter, method for producing a gas filter and use of said gas filter
NO992433A NO992433L (en) 1997-09-20 1999-05-20 Process for separating mixtures of substances using a material permeable to the substances
NO992432A NO992432L (en) 1997-09-20 1999-05-20 Catalytically active, permeable composite material, process for making composite material, and using the same
NO992435A NO992435L (en) 1997-09-20 1999-05-20 Gas filter, method of making a gas filter and use of the gas filter
NO992434A NO992434L (en) 1997-09-20 1999-05-20 Permeable composite material, process for making the composite material and using the same
US09/941,587 US6841075B2 (en) 1997-09-20 2001-08-30 Permeable composite material, method for producing said composite material, and use of the same
US09/956,915 US20020023419A1 (en) 1997-09-20 2001-09-21 Gas filter, process for producing a gas filter and use of this gas filter

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DE1997141498 DE19741498B4 (en) 1997-09-20 1997-09-20 Production of a ceramic stainless steel mesh composite
DE19811708A DE19811708B4 (en) 1997-09-20 1998-03-18 Production of ceramic membranes

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DE19820580A Expired - Lifetime DE19820580B4 (en) 1997-09-20 1998-05-08 Regenerable diesel exhaust filter
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DE19824666A Expired - Lifetime DE19824666B4 (en) 1997-09-20 1998-06-03 Production and use of a ceramic-metal carrier composite

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DE10361570A1 (en) * 2003-12-23 2005-07-21 Mann + Hummel Gmbh Filter system with a rotationally symmetrical filter element
US8584505B2 (en) 2009-01-05 2013-11-19 Synthesechemie Dr. Penth Gmbh Measuring instrument and method for detecting the content of oil, hydrocarbons and oxidizable gases in air or compressed air
DE102010038308A1 (en) 2010-07-23 2012-01-26 Evonik Degussa Gmbh Lithium cells and batteries with improved stability and safety, process for their preparation and use in mobile and stationary electrical energy storage
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US9962918B2 (en) 2011-09-21 2018-05-08 Korea Electric Power Corporation Production method for a support type coating membrane using tape casting
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DE102013105177A1 (en) 2013-05-21 2014-11-27 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for obtaining metallic fractions and metal-depleted material from metal-containing materials

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DE19820580A1 (en) 1999-11-11
DE19811708B4 (en) 2008-09-04
DE19824666A1 (en) 1999-12-09
DE19812035B4 (en) 2008-07-31
DE19824666B4 (en) 2008-08-21
DE19820580B4 (en) 2008-08-21
DE19812035A1 (en) 1999-09-23

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