CN202136924U - High-permeability hollow fiber ceramic membrane - Google Patents
High-permeability hollow fiber ceramic membrane Download PDFInfo
- Publication number
- CN202136924U CN202136924U CN201120252218U CN201120252218U CN202136924U CN 202136924 U CN202136924 U CN 202136924U CN 201120252218 U CN201120252218 U CN 201120252218U CN 201120252218 U CN201120252218 U CN 201120252218U CN 202136924 U CN202136924 U CN 202136924U
- Authority
- CN
- China
- Prior art keywords
- hollow fiber
- ceramic membrane
- layer
- fiber ceramic
- permeability
- 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 - Fee Related
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 40
- 239000000919 ceramic Substances 0.000 title claims abstract description 32
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 25
- 239000011148 porous material Substances 0.000 claims abstract description 13
- 230000035699 permeability Effects 0.000 abstract description 9
- 230000004907 flux Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 abstract 5
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000002344 surface layer Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910001233 yttria-stabilized zirconia Inorganic materials 0.000 description 7
- 230000003204 osmotic effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 235000012489 doughnuts Nutrition 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000009987 spinning Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000003349 gelling agent Substances 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 229920006393 polyether sulfone Polymers 0.000 description 2
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 description 2
- 229920000036 polyvinylpyrrolidone Polymers 0.000 description 2
- 239000001267 polyvinylpyrrolidone Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011282 treatment Methods 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000003788 bath preparation Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The utility model discloses a high-permeability hollow fiber ceramic membrane, which comprises an inner surface layer, a fingerlike pore layer and an outer porous layer sequentially from inside to outside. The high-permeability hollow fiber ceramic membrane is reasonable in configuration, the number of layers of an existing hollow fiber ceramic membrane is decreased, shortcomings caused by a spongy layer positioned in the middle of the prior art are overcome, the fingerlike pore layer positioned in the middle of the high-permeability hollow fiber ceramic membrane is given priority to, the configuration of the hollow fiber ceramic membrane is changed fundamentally, transmembrane permeability resistance is reduced, and membrane permeability flux is improved, so that membrane permeability is improved effectively.
Description
Technical field
The utility model relates to the membrane separation technique field, relates in particular to a kind of doughnut configuration ceramic film.
Background technology
That ceramic membrane has is high temperature resistant, intensity is high, resistance to chemical attack, inanimate object degraded, pore-size distribution are controlled, be easy to advantage such as regeneration, long service life and receive extensive concern, has broad application prospects in fields such as waste water and exhaust-gas treatments.The prior art ceramic membrane is generally single channel or multichannel tubular type configuration film, and its external diameter is generally 3～20cm, the little (＜300m of unit volume loading density of film
2/ m
3), the film equipment takes up space big, and separative efficiency is low; And; Ceramic membrane generally is to form hole through intergranular free accumulation; Porosity generally lower (≤35%); The fluid permeability resistance is bigger, and therefore existing ceramic membrane can't satisfy an urgent demand to reducing the film osmotic resistance, reducing the pressure loss (reducing back pressure) and effectively improve filter efficiency in the application such as extensive water treatment, high-temp waste gas filtration, purification.For this reason, people have carried out a large amount of research in recent years, and the doughnut configuration ceramic film (external diameter is less than 2mm) that wherein prepares with phase inversion is owing to have the big (＞1000m of unit volume loading density
2/ m
3), outstanding advantage such as preparation technology is simple, cost is low and obtained to pay close attention to widely and use.At present; The preparation of prior art phase inversion hollow fiber ceramic membrane generally adopts water as inside and outside gelling agent; Doughnut configuration ceramic film is typical unsymmetric structure usually, and is as shown in Figure 1, is made up of inner and outer skin layer 1, inside and outside finger-like pore layer 2 and middle sponge-like layer 3.Because more, the middle sponge-like layer 2 of the number of plies is thicker, therefore existing this structure its to stride the membrane fluid resistance bigger, finger-like pore layer 2 its hole shape be the little finger-like of lacking in addition; And inside and outside epidermal area compactness extent is suitable; Make the endepidermis layer also can cause the part resistance, be unfavorable for reducing membrane resistance, thereby cause the permeation flux of film low; Influence the membrane permeability ability, be unfavorable for improving the separative efficiency of hollow fiber ceramic membrane.
The utility model content
The purpose of the utility model is to overcome the deficiency of prior art, and a kind of unsymmetric structure, rational hollow fiber ceramic membrane of configuration of being is provided, and strides the film osmotic resistance, improves the film permeation flux with reduction, thereby effectively improve the membrane permeability ability.
The purpose of the utility model is achieved through following technical scheme:
A kind of high osmosis hollow fiber ceramic membrane that the utility model provides is made up of endepidermis layer, finger-like pore layer, outside porous layer from inside to outside successively.The utility model has reduced the number of plies of existing hollow fiber ceramic membrane, has eliminated the sponge-like layer in the middle of prior art is positioned at, and helps reducing and strides the film osmotic resistance.
Further, the utility model mainly is made up of said finger-like pore layer, and its thickness accounts for 90～95% of wall thickness, and its hole is the film caliber to extending and running through of living in layer.The utility model mainly is made up of the thicker finger-like pore layer in centre, and its hole shape is long big finger-like, helps reducing the fluid permeability resistance and improves permeability.
In the such scheme, the said outside porous layer thickness of the utility model is 10～30 μ m, and the thickness of endepidermis layer is 1～5 μ m.
The said outside porous layer of the utility model can be sponge-like layer.
The utlity model has following beneficial effect:
The utility model has reduced the number of plies of existing hollow fiber ceramic membrane; Eliminated the drawback that sponge-like layer brought in the middle of prior art is positioned at; And the big finger-like pore layer with in the middle of being positioned at is main, has fundamentally changed the configuration of hollow fiber ceramic membrane, and membrane porosity can reach more than 50%; And inner surface aperture and porosity are greater than outer surface; Help being in appearance more, thin porous layer serves as separating layer, and has reduced and has striden the film osmotic resistance, improved the film permeation flux, has effectively improved the membrane permeability ability.
Description of drawings
To combine embodiment and accompanying drawing that the utility model is done further to describe in detail below:
Fig. 1 is the structural representation of prior art hollow fiber ceramic membrane;
Fig. 2 is the structural representation of the utility model embodiment.
Among the figure: endepidermis layer 1, finger-like pore layer 2, sponge-like layer 3, outside porous layer 4
The specific embodiment
Shown in Figure 2 is the embodiment of a kind of high osmosis hollow fiber ceramic membrane of the utility model, is made up of endepidermis layer 1, finger-like pore layer 2, outside porous layer 4 successively from inside to outside, and wall thickness is 240 μ m.Wherein, the thickness of endepidermis layer 1, outside porous layer 4 is respectively 2 μ m and 16 μ m, and outside porous layer 4 can be sponge-like layer.The thickness of finger-like pore layer 2 accounts for 92.5% of wall thickness, and its hole is the film caliber to extending and running through of living in layer.
The present embodiment hollow fiber ceramic membrane can adopt following phase inversion preparation:
(1) polyether sulfone and polyvinylpyrrolidone are dissolved in the N-methyl pyrrolidone and are prepared into polymer solution; Add the YSZ that average grain diameter is 0.80 μ m (yttria-stabilized zirconia) powder again; After the 24h continuous stirring, make the casting film slurry, it consists of: 53.4wt%YSZ powder, 9.1wt% polyether sulfone, 36.5wt%N-methyl pyrrolidone, 1.0wt% polyvinylpyrrolidone.
(2) the casting film slurry with preparation adds in the slurry tank on the device for spinning; Vacuumize 0.5h earlier to remove remaining bubble; Logical then core liquid water; And the core flow velocity that flows out through nitrogen pressure and glass rotameter control pipe in the spinneret is 30ml/min, and the casting film slurry after applying nitrogen pressure at last and will vacuumizing is clamp-oned the spinning head that contains interpolation pipe, and wherein spinning head external diameter and internal diameter are respectively 2.5mm and 1.0mm.
(3) the fiber wet film of extruding from spinning head carries out 24h gelling curing with the speed of 4.0m/min through immersing absolute ethyl alcohol (outer coagulating bath) behind the air gap of 1.5cm.
(4) gelling is solidified back YSZ doughnut film precursor after drying, burns till at 1350 ℃ of insulation 4h, naturally cools to room temperature at last and obtains present embodiment unsymmetric structure YSZ hollow fiber ceramic membrane.
Present embodiment adopts weak gelling agent to replace strong gelling agent water as outer coagulating bath, and its open porosity of YSZ hollow fiber ceramic membrane for preparing reaches 50%, and the pure water permeation flux is 4.30m
3/ (m
2Hbar).And prior art is the YSZ hollow fiber ceramic membrane of outer coagulating bath preparation with water, and its open porosity is 42%, and the pure water permeation flux is merely 2.65m
3/ (m
2Hbar), far below the former.This is because prior art mainly constitutes (see figure 1) by middle sponge-like layer 3 with little finger-like pore layer 2, thereby osmotic resistance is big, and permeation flux is lower relatively.
Claims (5)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252218U CN202136924U (en) | 2011-07-16 | 2011-07-16 | High-permeability hollow fiber ceramic membrane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120252218U CN202136924U (en) | 2011-07-16 | 2011-07-16 | High-permeability hollow fiber ceramic membrane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202136924U true CN202136924U (en) | 2012-02-08 |
Family
ID=45548005
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120252218U Expired - Fee Related CN202136924U (en) | 2011-07-16 | 2011-07-16 | High-permeability hollow fiber ceramic membrane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202136924U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103111192A (en) * | 2013-02-28 | 2013-05-22 | 南京工业大学 | Microstructure modulation method of ceramic hollow fiber membrane |
| CN103638826A (en) * | 2013-12-26 | 2014-03-19 | 中国科学技术大学 | Asymmetrical ceramic separation membrane and preparation method thereof |
| WO2014201920A1 (en) * | 2013-06-19 | 2014-12-24 | 南京工业大学 | Method for preparing multichannel ceramic hollow fiber membrane |
| CN104519985A (en) * | 2012-12-21 | 2015-04-15 | Lg电子株式会社 | Hollow fiber film with novel structure and manufacturing method thereof |
| CN119633612A (en) * | 2025-01-24 | 2025-03-18 | 景德镇陶瓷大学 | A method for regulating microstructure and pore size of hollow fiber ceramic membrane and the resulting product |
-
2011
- 2011-07-16 CN CN201120252218U patent/CN202136924U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104519985A (en) * | 2012-12-21 | 2015-04-15 | Lg电子株式会社 | Hollow fiber film with novel structure and manufacturing method thereof |
| US9610545B2 (en) | 2012-12-21 | 2017-04-04 | Lg Electronics Inc. | Hollow-fibre membrane having novel structure, and production method therefor |
| CN103111192A (en) * | 2013-02-28 | 2013-05-22 | 南京工业大学 | Microstructure modulation method of ceramic hollow fiber membrane |
| CN103111192B (en) * | 2013-02-28 | 2016-02-10 | 南京工业大学 | Microstructure modulation method of ceramic hollow fiber membrane |
| WO2014201920A1 (en) * | 2013-06-19 | 2014-12-24 | 南京工业大学 | Method for preparing multichannel ceramic hollow fiber membrane |
| US11390565B2 (en) | 2013-06-19 | 2022-07-19 | Nanjing University Of Technology | Method for preparing multichannel ceramic hollow fiber membrane |
| CN103638826A (en) * | 2013-12-26 | 2014-03-19 | 中国科学技术大学 | Asymmetrical ceramic separation membrane and preparation method thereof |
| CN103638826B (en) * | 2013-12-26 | 2016-03-30 | 中国科学技术大学 | A kind of asymmetrical ceramic separation membrane and preparation method thereof |
| CN119633612A (en) * | 2025-01-24 | 2025-03-18 | 景德镇陶瓷大学 | A method for regulating microstructure and pore size of hollow fiber ceramic membrane and the resulting product |
| CN119633612B (en) * | 2025-01-24 | 2025-09-23 | 景德镇陶瓷大学 | Method for regulating microstructure and aperture of hollow fiber ceramic membrane and product obtained by method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20140716 |
|
| EXPY | Termination of patent right or utility model |