CN113648841A - Dry-state preservation method for hollow fiber membrane - Google Patents
Dry-state preservation method for hollow fiber membrane Download PDFInfo
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- CN113648841A CN113648841A CN202110894862.3A CN202110894862A CN113648841A CN 113648841 A CN113648841 A CN 113648841A CN 202110894862 A CN202110894862 A CN 202110894862A CN 113648841 A CN113648841 A CN 113648841A
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- membrane
- hollow fiber
- dry
- sodium
- polyoxyethylene ether
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- 239000012528 membrane Substances 0.000 title claims abstract description 55
- 239000012510 hollow fiber Substances 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004321 preservation Methods 0.000 title claims abstract description 13
- 238000001035 drying Methods 0.000 claims abstract description 9
- 238000002791 soaking Methods 0.000 claims abstract description 9
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 20
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 20
- 239000011734 sodium Substances 0.000 claims description 18
- 229910052708 sodium Inorganic materials 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 239000012530 fluid Substances 0.000 claims description 14
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 13
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 10
- 239000003755 preservative agent Substances 0.000 claims description 8
- 230000002335 preservative effect Effects 0.000 claims description 8
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 claims description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 7
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 7
- BEFDCLMNVWHSGT-UHFFFAOYSA-N ethenylcyclopentane Chemical compound C=CC1CCCC1 BEFDCLMNVWHSGT-UHFFFAOYSA-N 0.000 claims description 7
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 claims description 7
- WXMKPNITSTVMEF-UHFFFAOYSA-M sodium benzoate Chemical compound [Na+].[O-]C(=O)C1=CC=CC=C1 WXMKPNITSTVMEF-UHFFFAOYSA-M 0.000 claims description 7
- 239000004299 sodium benzoate Substances 0.000 claims description 7
- 235000010234 sodium benzoate Nutrition 0.000 claims description 7
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 7
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 7
- 235000011152 sodium sulphate Nutrition 0.000 claims description 7
- 239000004334 sorbic acid Substances 0.000 claims description 7
- 235000010199 sorbic acid Nutrition 0.000 claims description 7
- 229940075582 sorbic acid Drugs 0.000 claims description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 6
- 238000013329 compounding Methods 0.000 claims description 6
- 239000004094 surface-active agent Substances 0.000 claims description 6
- AVBJHQDHVYGQLS-AWEZNQCLSA-N (2s)-2-(dodecanoylamino)pentanedioic acid Chemical compound CCCCCCCCCCCC(=O)N[C@H](C(O)=O)CCC(O)=O AVBJHQDHVYGQLS-AWEZNQCLSA-N 0.000 claims description 3
- XEFQLINVKFYRCS-UHFFFAOYSA-N Triclosan Chemical compound OC1=CC(Cl)=CC=C1OC1=CC=C(Cl)C=C1Cl XEFQLINVKFYRCS-UHFFFAOYSA-N 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 3
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 3
- VBICKXHEKHSIBG-UHFFFAOYSA-N beta-monoglyceryl stearate Natural products CCCCCCCCCCCCCCCCCC(=O)OCC(O)CO VBICKXHEKHSIBG-UHFFFAOYSA-N 0.000 claims description 3
- 235000015424 sodium Nutrition 0.000 claims description 3
- 229960003500 triclosan Drugs 0.000 claims description 3
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000004907 flux Effects 0.000 abstract description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 235000011187 glycerol Nutrition 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 229940077388 benzenesulfonate Drugs 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- QJRVOJKLQNSNDB-UHFFFAOYSA-N 4-dodecan-3-ylbenzenesulfonic acid Chemical compound CCCCCCCCCC(CC)C1=CC=C(S(O)(=O)=O)C=C1 QJRVOJKLQNSNDB-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- FXHOOIRPVKKKFG-UHFFFAOYSA-N N,N-Dimethylacetamide Chemical compound CN(C)C(C)=O FXHOOIRPVKKKFG-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005371 permeation separation Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- B01D67/0088—Physical treatment with compounds, e.g. swelling, coating or impregnation
-
- 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
- B01D67/0095—Drying
-
- 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
- B01D67/0097—Storing or preservation
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to the technical field of hollow fiber membrane treatment, in particular to a dry-state preservation method for a hollow fiber membrane. The dry-state preservation method of the hollow fiber membrane comprises the following steps: (1) preparing a treatment solution; (2) soaking the membrane filaments; (3) and naturally drying the membrane yarns. The invention solves the problems existing in the existing membrane silk preservation process, effectively protects the membrane silk, avoids flux attenuation caused by over-drying, simultaneously reduces the investment of a large amount of labor cost and ensures the quality of the membrane silk product.
Description
Technical Field
The invention relates to the technical field of hollow fiber membrane treatment, in particular to a dry-state preservation method for a hollow fiber membrane.
Background
The hollow fiber membrane is a membrane having a self-supporting function and a fibrous shape. The hollow fiber membrane is prepared by processing polysulfone and dimethylacetamide serving as raw materials into fiber filaments with hollow inner cavities, and then dividing the fiber filaments by a high-permeability polymer, and has a selective permeability characteristic. Since water vapor, hydrogen, ammonia, and carbon dioxide permeate faster, and methane, nitrogen, argon, oxygen, and carbon monoxide permeate slower, this allows for a fast permeation to slow permeation separation.
At present, glycerol is commonly adopted in the industry to perform post-treatment on membrane filaments of a hollow fiber membrane so as to prevent flux attenuation caused by excessive airing of the membrane filaments, however, in production practice, the glycerol is used for soaking the membrane filaments of the hollow fiber membrane, so that a plurality of problems exist:
firstly, the membrane filaments are still dare not to dry; the membrane silk after glycerine is soaked can not effectively play the effect of hole protection, consequently can not dry thoroughly, otherwise the flux will seriously decay, does not produce water even, has namely used glycerine and has not reach due effect, causes glycerine to waste.
Secondly, a large amount of labor cost is consumed for spin-drying the excessive water of the membrane yarns; after the membrane wires are soaked in the glycerol, the excess moisture of the membrane wires needs to be dried before packaging, and the liquid in the membrane wires is thrown out by manual labor, so that a large amount of manpower is consumed;
thirdly, the adhesion force between the membrane filaments which are not completely dried and the epoxy resin is poor; the existence of a large amount of glycerin on the surface of the membrane wire leads to poor adhesion between the epoxy resin and the membrane wire during packaging, thereby causing a large amount of leakage points during air tightness detection and seriously affecting the product quality.
Disclosure of Invention
In view of the above, the invention provides a dry-state preservation method for a hollow fiber membrane, which comprises the following steps:
(1) preparing a treating fluid, wherein the treating fluid is obtained by compounding various surfactants, and two or more of linear alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid, nonylphenol polyoxyethylene ether, stearic acid monoglyceride and fatty alcohol-polyoxyethylene ether surfactants are selected during compounding;
(2) soaking membrane filaments, pouring the treatment liquid compounded in the step (1) into a rectangular groove body, and uniformly placing the membrane filaments in bundles into the rectangular groove body for standing and soaking;
(3) and naturally airing the membrane filaments, taking the soaked membrane filaments out of the rectangular groove body, and naturally airing the membrane filaments in a ventilation environment after drying the treatment liquid.
Specifically, in the step (1), a preservative is added to the treatment solution, and the preservative contains any one of sodium benzoate, sorbic acid, sodium hyponatte, triclosan and Kethon.
Specifically, in step (2), the treatment solution was added to 3/4 of the rectangular tank, and left to stand and soak for ≧ 8 hours.
In one embodiment, the treatment liquid consists of linear alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, sodium benzoate and pure water, and the volume percentages of the components in the treatment liquid are as follows: 10% of linear alkyl benzene sodium sulfonate, 5% of fatty alcohol-polyoxyethylene ether sodium sulfate, 1% of sodium benzoate and 84% of pure water.
In one embodiment, the treatment liquid consists of sodium linear alkyl benzene sulfonate, sodium lauryl sulfate, sorbic acid and pure water, and the volume percentages of the components in the treatment liquid are as follows: sodium linear alkyl benzene sulfonate 15%, sodium lauryl sulfate 8%, sorbic acid 0.5% and pure water 76.5%.
In one embodiment, the treatment fluid consists of linear alkyl benzene sulfonic acid sodium salt, nonylphenol polyoxyethylene ether, Kethon and pure water, and the volume percentage of each component in the treatment fluid is as follows: 12% of linear alkyl benzene sodium sulfonate, 6% of nonylphenol polyoxyethylene ether, 0.2% of Kethon and 81.8% of pure water.
The invention has the beneficial effects that:
the invention solves the problems existing in the existing membrane silk preservation process, effectively protects the membrane silk, avoids flux attenuation caused by over-drying, simultaneously reduces the investment of a large amount of labor cost and ensures the quality of the membrane silk product.
Drawings
FIG. 1 is a diagram of the method steps of the present invention.
Detailed Description
Preferred embodiments of this invention are readily implemented by those of ordinary skill in the art to which this invention pertains. However, the present invention may be embodied in many different forms and is not limited to the embodiments described below.
The embodiment provides a dry-state preservation method for a hollow fiber membrane, which comprises the following steps:
(1) preparing a treating fluid, wherein the treating fluid is obtained by compounding various surfactants, and two or more of linear alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid, nonylphenol polyoxyethylene ether, stearic acid monoglyceride and fatty alcohol-polyoxyethylene ether surfactants are selected during compounding;
(2) soaking membrane filaments, pouring the treatment liquid compounded in the step (1) into a rectangular groove body, uniformly placing the membrane filaments in bundles into the rectangular groove body, standing and soaking to ensure that the membrane filaments are completely soaked in the treatment liquid, and each membrane filament is completely contacted with the compounded treatment liquid;
(3) naturally drying the membrane filaments, taking out the soaked membrane filaments from the rectangular groove body, naturally drying the membrane filaments in a ventilated environment after drying the treatment liquid, and properly storing.
Preferably, in the step (1), in order to increase the treatment effect of the treatment liquid, a preservative is added into the treatment liquid, wherein the preservative comprises any one of sodium benzoate, sorbic acid, sodium hyponatte, triclosan and Kethon; before the preservative is added to the treatment liquid, it is necessary to dilute the treatment liquid in pure water and then add the preservative.
Preferably, in step (2), the treatment solution is added to 3/4 of the rectangular groove body, and is left to stand for soaking for ≧ 8 hours.
In order to achieve better preservation effect of the membrane silk, the invention provides three embodiment schemes:
example one
The treatment fluid consists of linear alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, sodium benzoate and pure water, and the volume percentages of the components in the treatment fluid are as follows: 10% of linear alkyl benzene sodium sulfonate, 5% of fatty alcohol-polyoxyethylene ether sodium sulfate, 1% of sodium benzoate and 84% of pure water.
Example two
The treatment fluid consists of linear alkyl benzene sodium sulfonate, sodium lauryl sulfate, sorbic acid and pure water, and the volume percentages of the components in the treatment fluid are as follows: sodium linear alkyl benzene sulfonate 15%, sodium lauryl sulfate 8%, sorbic acid 0.5% and pure water 76.5%.
EXAMPLE III
The treating fluid consists of linear alkyl benzene sulfonic acid sodium salt, nonylphenol polyoxyethylene ether, Kethon and pure water, and the treating fluid comprises the following components in percentage by volume: 12% of linear alkyl benzene sodium sulfonate, 6% of nonylphenol polyoxyethylene ether, 0.2% of Kethon and 81.8% of pure water.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (3)
1. A dry-state preservation method for a hollow fiber membrane comprises the following steps:
(1) preparing a treating fluid, wherein the treating fluid is obtained by compounding various surfactants, and two or more of linear alkyl benzene sodium sulfonate, fatty alcohol-polyoxyethylene ether sodium sulfate, fatty alcohol-polyoxyethylene ether ammonium sulfate, sodium lauryl sulfate, lauroyl glutamic acid, nonylphenol polyoxyethylene ether, stearic acid monoglyceride and fatty alcohol-polyoxyethylene ether surfactants are selected during compounding;
(2) soaking membrane filaments, pouring the treatment liquid compounded in the step (1) into a rectangular groove body, and uniformly placing the membrane filaments in bundles into the rectangular groove body for standing and soaking;
(3) and naturally airing the membrane filaments, taking the soaked membrane filaments out of the rectangular groove body, and naturally airing the membrane filaments in a ventilation environment after drying the treatment liquid.
2. The dry-state preservation method for the hollow fiber membrane according to claim 1, characterized in that: in the step (1), a preservative is added into the treatment solution, and the preservative comprises any one of sodium benzoate, sorbic acid, sodium hyponatte, triclosan and Kethon.
3. The dry-state preservation method for the hollow fiber membrane according to claim 2, characterized in that: in the step (2), the treatment solution is added to 3/4 of the rectangular tank body, and is left to stand and soaked for ≧ 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894862.3A CN113648841A (en) | 2021-08-05 | 2021-08-05 | Dry-state preservation method for hollow fiber membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110894862.3A CN113648841A (en) | 2021-08-05 | 2021-08-05 | Dry-state preservation method for hollow fiber membrane |
Publications (1)
| Publication Number | Publication Date |
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| CN113648841A true CN113648841A (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110894862.3A Pending CN113648841A (en) | 2021-08-05 | 2021-08-05 | Dry-state preservation method for hollow fiber membrane |
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| Country | Link |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114950144A (en) * | 2022-04-29 | 2022-08-30 | 苏州富淼膜科技有限公司 | Membrane filament cleaning method before hollow fiber column type ultrafiltration membrane pouring |
| CN115025624A (en) * | 2022-07-26 | 2022-09-09 | 浙江易膜新材料科技有限公司 | Preparation and application method of dry hollow fiber ultrafiltration membrane filaments |
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-
2021
- 2021-08-05 CN CN202110894862.3A patent/CN113648841A/en active Pending
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| CN114950144A (en) * | 2022-04-29 | 2022-08-30 | 苏州富淼膜科技有限公司 | Membrane filament cleaning method before hollow fiber column type ultrafiltration membrane pouring |
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