NL2004229C2 - Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation. - Google Patents

Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation. Download PDF

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Publication number
NL2004229C2
NL2004229C2 NL2004229A NL2004229A NL2004229C2 NL 2004229 C2 NL2004229 C2 NL 2004229C2 NL 2004229 A NL2004229 A NL 2004229A NL 2004229 A NL2004229 A NL 2004229A NL 2004229 C2 NL2004229 C2 NL 2004229C2
Authority
NL
Netherlands
Prior art keywords
cylinder
fibre
ceramic hollow
hollow fiber
channels
Prior art date
Application number
NL2004229A
Other languages
Dutch (nl)
Inventor
Rinse Alle Terpstra
Ruud Wilhelmus Johannes Dirrix
Johannes Martinus Groenen
Original Assignee
Hyflux Ceparation Technologies Europ B V
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 Hyflux Ceparation Technologies Europ B V filed Critical Hyflux Ceparation Technologies Europ B V
Priority to NL2004229A priority Critical patent/NL2004229C2/en
Application granted granted Critical
Publication of NL2004229C2 publication Critical patent/NL2004229C2/en

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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
    • B01D69/08—Hollow fibre membranes
    • 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
    • B01D69/08—Hollow fibre membranes
    • B01D69/082—Hollow fibre membranes characterised by the cross-sectional shape of the fibre

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Description

Ceramic hollow fibre, more particularly fibre membrane for micro filtration, ultrafiltration and gas separation.
DESCRIPTION:
Field of the invention.
5
The invention relates to a ceramic hollow fibre, more particularly a fibre membrane for micro filtration, ultrafiltration and gas separation, comprising a cylinder having at least two channels extending in longitudinal direction of the fibre and which are disposed with a mutual spacing and are separated from each other by a wall which forms part of the 10 cylinder.
State of the art.
A fibre of this type is generally known. In the known fibre the bounding walls 15 of each channel are formed by thin walls of filter material and between and around these walls a highly porous material is disposed, that is to say, a material having large pores. In essence the cylinder is thus made of a highly porous material having hollow cylinder walls of small-pore filter material. Such a fibre has greater strength than a hollow one-channel fibre because it has a larger diameter and in cross section has a larger surface filled with material 20 than a one-channel fibre. Such a fibre still has the advantage of high flux and easy cleanability due to low support wall thickness. A disadvantage of this known fibre is, however, that it is relatively hard to manufacture and thus relatively expensive.
Summary of the invention.
25
It is an object of the invention to provide a fibre of the type defined in the opening paragraph which is strong and relatively simple to manufacture. For this purpose the fibre according to the invention is characterised in that the cylinder is formed from uniform filter material. As a consequence, the fibre according to the invention can be manufactured in 30 a simple manner.
2
For achieving sufficient filter capacity under normal operating conditions the smallest distance between a channel and the outside of the cylinder is less than 2000 pm.
Since the flow through the wall is determined by the size of the largest pores, preferably at least 90% of the pores of the filter material has a pore size of 2000 nm or less.
5 The cylinder preferably has three, four, five, six or seven channels. In the event of more channels which are uniformly distributed over the section of the fibre the distance from the fibre(s) disposed in or around the centre to the outside wall of the cylinder becomes too great, so that these fibres are less effective or not effective at all.
An embodiment of the fibre according to the invention is characterised in that 10 the cylinder has a cloverleaf-shaped cross section with a channel being present in each leafshaped portion. An advantage of this is that the wall thickness of the channels is the same over the greater part of the circumference of the channels, so that the filter capacity is larger than in a fibre having a circular cylindrical shape.
A further embodiment of the fibre according to the invention is characterised 15 in that the bounding walls of the channels and/or the outside of the cylinder are covered with a coating of which at least 90% of the pores has a pore size of 2000 nm or less.
Brief description of the drawings.
20 The following description relating to the appended drawings, the whole given by way of non-limiting example of the fibre according to the invention, will provide better understanding of how the invention can be realized, in which:
Fig. 1 shows a circular sectional view of a first embodiment of the fibre according to the invention; and 25 Fig. 2 shows a cloverleaf-shaped sectional view of a second embodiment of the fibre according to the invention.
Detailed description of the drawings.
30 Fig. 1 shows a sectional view of a first embodiment of the fibre according to the invention. This fibre 1 comprises a cylinder 3 of a circular section and has three channels 5 extending in longitudinal direction of the fibre and which are present with a mutual spacing. The cylinder 3 is formed from a uniform filter material with at least 90% of the pores of the filter material having a pore size of 2000 nm or less.
3
The smallest distance 7 between a channel 5 and the outside 9 of the cylinder 3 is less than 2000 pm. Also the smallest mutual distance 11 between the channels 5 is less than 2000 pm.
In Fig. 2 is shown a sectional view of a second embodiment of the fibre 5 according to the invention. This fibre 13 also has three channels 15, but the section of the cylinder 17 of this fibre is cloverleaf-shaped here with a channel 15 being present in each cloverleaf portion 19. The wall thickness 21 of the channels 15 is the same over the greater part of the circumference of the channels, so that the filter capacity is larger than in a fibre having a circular cylindrical shape.
10 Albeit the invention has been described in the foregoing based on the drawing figures, it should be observed that the invention is not by any manner or means restricted to the embodiment shown in the drawing figures. The invention also extends to all embodiments deviating from the embodiment shown in the drawing figures within the spirit and scope defined by the claims. For example, the bounding walls of the channels and/or the outside of 15 the filter may be covered with a coating.

Claims (6)

1. Keramische holle vezel, in het bijzonder vezelmembraan voor micro filtratie, ultrafiltratie en gasscheiding, omvattende een cilinder voorzien van ten minste twee zich in lengterichting van de vezel uitstrekkende kanalen die op afstand van elkaar aanwezig zijn en 5 van elkaar gescheiden zijn door een wand die deel uitmaakt van de cilinder, met het kenmerk, dat de cilinder uit uniform filtermateriaal is gevormd.Ceramic hollow fiber, in particular fiber membrane for micro filtration, ultrafiltration and gas separation, comprising a cylinder provided with at least two longitudinally extending channels of the fiber which are spaced apart and separated from each other by a wall which forms part of the cylinder, characterized in that the cylinder is formed from uniform filter material. 2. Keramische holle vezel volgens conclusie 1, met het kenmerk, dat de kleinste afstand tussen een kanaal en de buitenzijde van de cilinder kleiner is dan 2000 pm.Ceramic hollow fiber according to claim 1, characterized in that the smallest distance between a channel and the outside of the cylinder is less than 2000 µm. 3. Keramische holle vezel volgens conclusie 1 of 2, met het kenmerk, dat ten minste 10 90% van de poriën van het filtermateriaal een poriëngrootte heeft van 2000 nm of minder.Ceramic hollow fiber according to claim 1 or 2, characterized in that at least 10% of the pores of the filter material have a pore size of 2000 nm or less. 4. Keramische holle vezel volgens conclusie 1, 2 of 3, met het kenmerk, dat de cilinder is voorzien van drie, vier, vijf, zes of zeven kanalen.Ceramic hollow fiber according to claim 1, 2 or 3, characterized in that the cylinder is provided with three, four, five, six or seven channels. 5. Keramische holle vezel volgens één der voorgaande conclusies, met het kenmerk, dat de cilinder een klaverbladvormige dwarsdoorsnede heeft, waarbij in elk bladvormig deel een 15 kanaal aanwezig is.5. Ceramic hollow fiber according to any one of the preceding claims, characterized in that the cylinder has a cloverleaf-shaped cross-section, wherein a channel is present in each leaf-shaped part. 6. Keramische holle vezel volgens één der voorgaande conclusies, met het kenmerk, dat de begrenzingszijden van de kanalen en/of de buitenzijde van de cilinder zijn voorzien van een coating waarvan ten minste 90% van de poriën een poriëngrootte heeft van 2000 nm of minder.Ceramic hollow fiber according to one of the preceding claims, characterized in that the boundary sides of the channels and / or the outside of the cylinder are provided with a coating of which at least 90% of the pores have a pore size of 2000 nm or less .
NL2004229A 2010-02-12 2010-02-12 Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation. NL2004229C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2004229A NL2004229C2 (en) 2010-02-12 2010-02-12 Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL2004229 2010-02-12
NL2004229A NL2004229C2 (en) 2010-02-12 2010-02-12 Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation.

Publications (1)

Publication Number Publication Date
NL2004229C2 true NL2004229C2 (en) 2011-08-16

Family

ID=42813167

Family Applications (1)

Application Number Title Priority Date Filing Date
NL2004229A NL2004229C2 (en) 2010-02-12 2010-02-12 Ceramic hollow fibre, more particularly fibre membrane for microfiltration, ultrafiltration and gas separation.

Country Status (1)

Country Link
NL (1) NL2004229C2 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022313A1 (en) * 1979-06-14 1980-12-18 Nippon Zeon Co Fluid-core spinning semipermeable multiple hollow fibres - have almost whole circumference contacted by fluid outside membrane
EP0686424A1 (en) * 1994-06-08 1995-12-13 T.A.M.I. Industries Inorganic multichannel element for filtering fluids
US5707584A (en) * 1993-04-15 1998-01-13 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Method for the production of ceramic hollow fibres
WO2001039869A1 (en) * 1999-12-03 2001-06-07 Degremont Sa Method for membrane filtration of liquids and device therefor
WO2006012920A1 (en) * 2004-07-29 2006-02-09 Inge Ag Filtration membrane and method for producing the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022313A1 (en) * 1979-06-14 1980-12-18 Nippon Zeon Co Fluid-core spinning semipermeable multiple hollow fibres - have almost whole circumference contacted by fluid outside membrane
US5707584A (en) * 1993-04-15 1998-01-13 Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno Method for the production of ceramic hollow fibres
EP0686424A1 (en) * 1994-06-08 1995-12-13 T.A.M.I. Industries Inorganic multichannel element for filtering fluids
WO2001039869A1 (en) * 1999-12-03 2001-06-07 Degremont Sa Method for membrane filtration of liquids and device therefor
WO2006012920A1 (en) * 2004-07-29 2006-02-09 Inge Ag Filtration membrane and method for producing the same

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Legal Events

Date Code Title Description
V1 Lapsed because of non-payment of the annual fee

Effective date: 20150901