CN112774451A - Hollow fiber membrane pre-plugging hole treatment method - Google Patents
Hollow fiber membrane pre-plugging hole treatment method Download PDFInfo
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- CN112774451A CN112774451A CN202011503882.5A CN202011503882A CN112774451A CN 112774451 A CN112774451 A CN 112774451A CN 202011503882 A CN202011503882 A CN 202011503882A CN 112774451 A CN112774451 A CN 112774451A
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- hollow fiber
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
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- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention provides a hollow fiber membrane pre-plugging hole treatment method which specifically comprises the steps of placing a membrane silk bundle into a membrane shell, cutting and flattening the end part, then preparing plugging glue, plugging the end part of the membrane silk in a brushing mode, after the plugging part is solidified, carrying out ultrasonic cleaning on the side surface of the end part of the membrane silk by using an ultrasonic cleaning container, thus efficiently removing the plugging glue between the membrane silk, and drying after cleaning to obtain the hollow fiber membrane after the pre-plugging hole treatment. The treatment method provided by the invention can effectively improve the efficiency of pre-plugging holes, shorten the treatment time of pre-plugging holes, reduce the labor cost and have a good application prospect.
Description
Technical Field
The invention relates to the technical field of production and manufacturing of hollow fiber membrane components, in particular to a hollow fiber membrane pre-plugging hole treatment method.
Background
The hollow fiber membrane component is produced by arranging hollow fiber membranes into a bundle shape on an operation table, sleeving a mesh bag after binding two ends of the hollow fiber membranes, then putting hollow fiber membrane tows into the plastic shell of the hollow fiber membrane component, axially arranging the hollow afternoon inner membrane tows in the plastic shell of the hollow fiber membrane component, plugging two ends of the hollow fiber membrane tows by using a pre-plugging material, injecting epoxy resin potting adhesive, plugging and bonding gaps among the hollow fiber membrane filaments, cutting off a pouring layer of a plugging part after complete curing, and exposing inner holes of the hollow fiber membrane filaments.
At present, the plugging materials at two ends of a hollow fiber membrane silk bundle are prepared by mixing gypsum powder and water according to a certain proportion, the gypsum is brushed and plugged by a brush, after the gypsum is dried and hardened, the gypsum between membrane silk is removed, the next procedure is carried out, the gypsum between the membrane silk is brushed and plugged by the gypsum, the whole procedure needs to consume nearly one hour, the labor hour is long, and the efficiency is low.
Disclosure of Invention
In view of the above, the invention provides a hollow fiber membrane pre-plugging hole treatment method which is higher in installation efficiency and convenient to block and clean.
The technical scheme of the invention is realized as follows: the invention provides a hollow fiber membrane pre-plugging hole treatment method, which comprises the following steps:
bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, filling the bundles into membrane shells, and then cutting and flattening the end parts of the membrane filaments;
secondly, preparing plugging glue, and coating the prepared plugging glue on the end parts of the cut and flattened membrane filaments until each membrane filament hole is completely plugged;
after the plugging glue is solidified, vertically placing the membrane tows in an ultrasonic cleaning container, installing a latex pad at the bottom of the ultrasonic cleaning container, enabling the end part of the membrane tow plugging to be abutted against the surface of the latex pad, adding water into the ultrasonic cleaning container, and then starting ultrasonic waves for cleaning;
and step four, after the ultrasonic cleaning is finished, discharging water in the ultrasonic cleaning container, taking out the membrane tows, and drying the membrane tows under hot air. .
On the basis of the above technical scheme, preferably, in the second step, the plugging glue comprises aqueous putty, a diluent and a disintegrating agent.
On the basis of the technical scheme, preferably, the water-based putty is prepared from the following components in parts by weight: diluent agent: the mass ratio of the disintegrating agent is (88-92): (5-8): (4-7).
On the basis of the technical scheme, preferably, the disintegrating agent is one or a combination of several of low-substituted hydroxypropyl methylcellulose, sodium hydroxymethyl starch and effervescent disintegrating agent.
Still more preferably, the diluent is one of methanol, ethanol and styrene.
On the basis of the above technical scheme, preferably, the preparation method of the plugging glue comprises: and mixing the water-based putty, the diluent and the disintegrating agent, adding the mixture into a stirrer, and stirring the mixture for 5 to 10 minutes at the rotating speed of 100-300r/min to obtain the plugging glue.
On the basis of the above technical scheme, preferably, in the third step, the water added into the ultrasonic cleaning container comprises a surfactant.
On the basis of the technical scheme, preferably, the surfactant is one of lauryl sulfosuccinate monoester disodium, monolauryl phosphate and potassium monododecyl phosphate.
On the basis of the above technical scheme, preferably, in the step three, the ultrasonic cleaning time is 2-5 min.
On the basis of the technical scheme, preferably, in the fourth step, the hot air temperature is 50-70 ℃, and the drying time is 5-10 min.
Compared with the prior art, the hollow fiber membrane pre-plugging hole treatment method has the following beneficial effects: (1) the invention provides a hollow fiber membrane pre-hole-plugging treatment method which is simpler and has shorter treatment time, after the hole plugging treatment is carried out by painting, unnecessary glue among membrane wires is removed by adopting an ultrasonic cleaning mode, so that the manual operation is saved, the removal time can be effectively shortened, and the production efficiency is improved; (2) the invention also improves the plugging glue and the water liquid during ultrasonic treatment, improves the disintegration of the plugging glue in the water liquid, enables the plugging glue to be more easily cleaned, and further improves the production efficiency.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Preparing plugging glue: 880g of water-based putty, 50g of methanol and 40g of low-substituted hydroxypropyl methyl cellulose are respectively weighed, stirred and mixed in a stirrer at the stirring speed of 100r/min and stirred for 5min to obtain the plugging glue.
Bundling a unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, loading the bundles into a membrane shell, cutting the ends of the membrane filaments into flat, coating plugging glue on the ends of the cut membrane filaments until each membrane filament hole is completely plugged, vertically placing the membrane filaments in an ultrasonic cleaning container after the plugging glue is cured, enabling the ends of the membrane filaments to be supported on a latex pad at the bottom of the ultrasonic cleaning container, adding water into the ultrasonic cleaning container, starting ultrasonic waves for cleaning, discharging water in the ultrasonic cleaning container after ultrasonic cleaning is carried out for 2min, taking out the membrane filaments, and drying for 5min at 50 ℃ in hot air to obtain the hollow fiber membrane with the pre-plugged holes.
Example 2
Preparing plugging glue: respectively weighing 890g of aqueous putty, 60g of ethanol and 50g of sodium hydroxymethyl starch, stirring and mixing in a stirrer at the stirring speed of 200r/min for 6min to obtain the plugging glue.
Bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, loading the bundles into a membrane shell, then flattening the ends of the membrane filaments, coating plugging glue on the flattened ends of the membrane filaments until each membrane filament hole is completely plugged, vertically placing the membrane filament bundles in an ultrasonic cleaning container after the plugging glue is solidified, enabling the ends of the membrane filaments to be propped against a latex pad at the bottom of the ultrasonic cleaning container, adding water and lauryl sulfosuccinic acid monoester disodium, lauryl sulfosuccinic acid monoester disodium into the ultrasonic cleaning container: and (3) the mass ratio of water is 1:100, the water surface height is higher than the highest height of the plugging glue, then ultrasonic waves are started for cleaning, after 3min of ultrasonic cleaning, the water in the ultrasonic cleaning container is discharged, membrane tows are taken out and dried for 6min under hot air at 60 ℃, and the hollow fiber membrane with the pre-plugged holes is obtained.
Example 3
Preparing plugging glue: respectively weighing 900g of water-based putty, 70g of styrene and 60g of effervescent disintegrant, stirring and mixing in a stirrer at the stirring speed of 300r/min for 7min to obtain the plugging glue.
Bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, loading the bundles into a membrane shell, then cutting and flattening the ends of the membrane filaments, coating plugging glue on the ends of the cut and flattened membrane filaments until each membrane filament hole is completely plugged, vertically placing the membrane filament bundles in an ultrasonic cleaning container after the plugging glue is solidified, enabling the ends of the membrane filaments to be supported on a latex pad at the bottom of the ultrasonic cleaning container, adding water and monolauryl phosphate into the ultrasonic cleaning container, and obtaining the finished product of the membrane filament bundle: and (3) the mass ratio of water is 1:100, the water surface height is higher than the highest height of the plugging glue, then ultrasonic waves are started for cleaning, after ultrasonic cleaning is carried out for 4min, water in an ultrasonic cleaning container is discharged, membrane tows are taken out and dried for 7min under hot air at 70 ℃, and the hollow fiber membrane with the pre-plugged holes is obtained.
Example 4
Preparing plugging glue: respectively weighing 910g of aqueous putty, 80g of styrene, 30g of sodium hydroxymethyl starch and 40g of effervescent disintegrant, stirring and mixing in a stirrer at the stirring speed of 200r/min for 8min to obtain the plugging glue.
Bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, loading the bundles into a membrane shell, then cutting and flattening the ends of the membrane filaments, coating plugging glue on the ends of the cut and flattened membrane filaments until each membrane filament hole is completely plugged, vertically placing the membrane filament bundles in an ultrasonic cleaning container after the plugging glue is solidified, enabling the ends of the membrane filaments to be supported on a latex pad at the bottom of the ultrasonic cleaning container, adding water and potassium monododecyl phosphate into the ultrasonic cleaning container, adding potassium monododecyl phosphate: and (3) the mass ratio of water is 1:100, the water surface height is higher than the highest height of the plugging glue, then ultrasonic waves are started for cleaning, after 5min of ultrasonic cleaning, the water in the ultrasonic cleaning container is discharged, the membrane tows are taken out and dried for 8min under hot air at 70 ℃, and the hollow fiber membrane with the pre-plugged holes is obtained.
Example 5
Preparing plugging glue: respectively weighing 920g of aqueous putty, 80g of styrene, 30g of sodium hydroxymethyl starch and 40g of low-substituted hydroxypropyl methyl cellulose, stirring and mixing in a stirrer at the stirring speed of 200r/min for 10min to obtain the plugging glue.
Bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, loading the bundles into a membrane shell, then cutting and flattening the ends of the membrane filaments, coating plugging glue on the ends of the cut and flattened membrane filaments until each membrane filament hole is completely plugged, vertically placing the membrane filament bundles in an ultrasonic cleaning container after the plugging glue is solidified, enabling the ends of the membrane filaments to be supported on a latex pad at the bottom of the ultrasonic cleaning container, adding water and potassium monododecyl phosphate into the ultrasonic cleaning container, adding potassium monododecyl phosphate: and (3) the mass ratio of water is 1:100, the water surface height is higher than the highest height of the plugging glue, then ultrasonic waves are started for cleaning, after 5min of ultrasonic cleaning, the water in the ultrasonic cleaning container is discharged, membrane tows are taken out and dried for 10min under hot air at 60 ℃, and the hollow fiber membrane with the pre-plugged holes is obtained.
The shapes and appearances of the ends of the hollow fiber membranes obtained in the above five examples were observed, respectively, and the results were as follows:
| grouping | Example 1 | Example 2 | Example 3 | Example 4 | Example 5 |
| Degree of separation of end portions | All separate | All separate | All separate | All separate | All separate |
| End plugging | Plugging is good | Plugging is good | Plugging is good | Plugging is good | Plugging is good |
| Residual plugging glue | Small amount of residue | Has no residue | Has no residue | Has no residue | Has no residue |
The result shows that the hollow fiber membrane pre-plugging hole treatment method can effectively remove the dried plugging glue between the membrane filaments, and meanwhile, the treatment time is shorter, the efficiency is high, the treatment process does not need manual participation, and the labor cost can be effectively reduced.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A hollow fiber membrane pre-plugging hole treatment method is characterized by comprising the following steps:
bundling unit quantity of hollow fiber ultrafiltration membrane filaments into bundles, filling the bundles into membrane shells, and then cutting and flattening the end parts of the membrane filaments;
secondly, preparing plugging glue, and coating the prepared plugging glue on the end parts of the cut and flattened membrane filaments until each membrane filament hole is completely plugged;
after the plugging glue is solidified, vertically placing the membrane tows in an ultrasonic cleaning container, installing a latex pad at the bottom of the ultrasonic cleaning container, enabling the end part of the membrane tow plugging to be abutted against the surface of the latex pad, adding water into the ultrasonic cleaning container, and then starting ultrasonic waves for cleaning;
and step four, after the ultrasonic cleaning is finished, discharging water in the ultrasonic cleaning container, taking out the membrane tows, and drying the membrane tows under hot air.
2. The hollow fiber membrane pre-plugging hole treatment method according to claim 1, wherein in the second step, the plugging glue comprises aqueous putty, a diluent and a disintegrating agent.
3. The hollow fiber membrane pre-plugging hole treatment method according to claim 2, wherein the water-based putty is prepared from the following components in parts by weight: diluent agent: the mass ratio of the disintegrating agent is (88-92): (5-8): (4-7).
4. The hollow fiber membrane pre-plugging hole treatment method according to claim 2, wherein the hole is pre-plugged. The disintegrating agent is one or a combination of a plurality of low-substituted hydroxypropyl methylcellulose, sodium hydroxymethyl starch and effervescent disintegrating agent.
5. The hollow fiber membrane pre-plugging hole treatment method according to claim 2, wherein the diluent is one of methanol, ethanol, and styrene.
6. The hollow fiber membrane pre-plugging hole treatment method according to claim 2, wherein the preparation method of the plugging glue comprises the following steps: and mixing the water-based putty, the diluent and the disintegrating agent, adding the mixture into a stirrer, and stirring the mixture for 5 to 10 minutes at the rotating speed of 100-300r/min to obtain the plugging glue.
7. The hollow fiber membrane pre-plugging process of claim 1, wherein in step three, the water added to the ultrasonic cleaning vessel comprises a surfactant.
8. The hollow fiber membrane pre-plugging hole treatment method according to claim 1, wherein in the third step, the ultrasonic cleaning time is 2-5 min.
9. The hollow fiber membrane pre-plugging hole treatment method according to claim 1, wherein in the fourth step, the hot air temperature is 50-70 ℃ and the drying time is 5-10 min.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113731181A (en) * | 2021-09-14 | 2021-12-03 | 广东元星工业新材料有限公司 | Potting process for hollow fiber membrane module and preparation method of potting material |
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| CN113731181A (en) * | 2021-09-14 | 2021-12-03 | 广东元星工业新材料有限公司 | Potting process for hollow fiber membrane module and preparation method of potting material |
| CN113731181B (en) * | 2021-09-14 | 2023-10-31 | 广东元星工业新材料有限公司 | Filling and sealing process for hollow fiber membrane component and preparation method of filling and sealing material |
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| CN112774451B (en) | 2022-05-13 |
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