CN201179426Y - High-efficiency hollow fiber film assembly apparatus - Google Patents
High-efficiency hollow fiber film assembly apparatus Download PDFInfo
- Publication number
- CN201179426Y CN201179426Y CNU2007200982142U CN200720098214U CN201179426Y CN 201179426 Y CN201179426 Y CN 201179426Y CN U2007200982142 U CNU2007200982142 U CN U2007200982142U CN 200720098214 U CN200720098214 U CN 200720098214U CN 201179426 Y CN201179426 Y CN 201179426Y
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- China
- Prior art keywords
- hollow fiber
- filter
- film assembly
- curtain
- membrane module
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Abstract
The utility model relates to a high-efficiency hollow fiber film assembly device which comprises a curtain type hollow fiber films and isolation nets, which are arranged in a film assembly shell. The hollow fiber curtains and the isolation nets in the film assembly shell are orderly and repeatedly overlapped and regularly arrayed in terms of a hollow fiber curtain/an isolation net or an isolation net/ a hollow fiber curtain. The hollow fiber film assembly of the high-efficiency hollow fiber film assembly device can effectively avoid the fiber accumulation during the use process and effectively reduce the damage of water wallops suffered by the hollow fiber films in the film assembly, thereby remarkably improving the permeation and separation efficiency of the hollow fiber film assembly, prolonging the service life of the films and improving the anti-pollution performance.
Description
Technical field
The utility model relates to a kind of water treatment facilities, specifically relates to a kind of hollow-fibre membrane water treatment facilities.
Background technology
In the use of the relevant hollow fiber film assembly of various water treatments, the doughnut in the putamina is the clustering phenomena of various degrees all.Many-sided reason has caused the generation of this clustering phenomena, such as the arrangement of viscosity in aqueous solution in: the difference between the surface tension of film and the processed water solution, the membrane module and the impulse force fiber when mobile and film pollution etc.The serious hollow-fibre membrane clustering phenomena that typical example occurs in water treatment procedure such as membrane contactor, the employed hollow-fibre membrane of membrane for water treatment contactor mostly is the surface hydrophobic film greatly, when the flows outside of processed water solution at fiber, hydrophobic doughnut tends to draw close mutually to reduce its surface energy, and its result of the impetus of current has formed the fibril aggregation state in the use in addition.The direct result that hollow-fibre membrane is assembled is significantly to have reduced effective separating area of film, thereby has reduced the separative efficiency that sees through of membrane module.
The purpose of this utility model is for overcoming the clustering phenomena of above-mentioned hollow-fibre membrane, designs and prepares a kind of new hollow fiber film assembly, effectively improves the separative efficiency that sees through of hollow fiber film assembly.
Summary of the invention
The purpose of this utility model provides a kind of film component device that can prevent effectively that hollow-fibre membrane is assembled in the membrane module in the use, and therefore improves the separative efficiency that sees through of hollow-fibre membrane.
The utility model is by the structure of membrane module and preparation technology's design are achieved the above object, and the Several Factors of considering emphatically at the design and the manufacture view of hollow fiber film assembly is: the arranged distribution of (1) hollow-fibre membrane in membrane module should be uniform; (2) relative fixed between the doughnut; (3) increasing the interior liquid of membrane module flows with respect to the irregular of hollow-fibre membrane.
For achieving the above object, at first doughnut neatly is woven into curtain shape (as shown in Figure 1) equably, distance between the fiber is determined by the thickness of braiding line and the tightness of braiding, therefore in the design of carrying out assembly and manufacture process, should determine the thickness of litzendraht wire and the tightness of braiding (braiding should not be too tight, otherwise can make the doughnut distortion) according to the spacing between the fiber.Should keep suitable distance between two litzendraht wires in the fibre curtain, if the too short effective separating area that can increase the braiding cost and reduce film of distance, if oversizely could not play the effect that fiber is assembled mutually that intercepts again well.Good physics, chemical property that the used litzendraht wire material of braided fiber curtain should have are such as higher intensity, good flexibility and stitchability, good chemical stability, antibiont degradability, temperature tolerance and ageing resistance etc.
For preventing in use gathering mutually of hollow-fibre membrane between layer and the layer, serve as a contrast with filter (as shown in Figure 2) between the fibrage in the membrane module.The thickness of described filter has determined the distance between the fibrage, if significantly reduced the loading density of membrane module inner membrance though filter is too thick in that to intercept fiber more effective aspect gathering mutually, has reduced the effect of elementary membrane assembly.Described filter should have the eyed structure of the high porosity of trying one's best, suitable mesh size and rule, low filter porosity can reduce effective contact area of processed liquid and hollow-fibre membrane and increase the flow resistance of processed liquid in membrane module, suitable mesh size (reticular density) and filter thickness can make the appropriate distance of maintenance between the fibrage and be unlikely to be in contact with one another, and the eyed structure of rule helps the even distribution of the membrane module inner fluid speed local irregularities consistent with generation to flow.Good physics, chemical property that the material of described filter should be had are such as higher intensity, good chemical stability, antibiont degradability, temperature tolerance and ageing resistance etc.
In the preparation process of membrane module, filter and doughnut curtain are isometric, wide or narrow slightly, and filter and doughnut curtain stack with the center alignment of its width.If the membrane module of preparation is conventional shell-and-tube cylindrical structural, then doughnut curtain and filter are stacked together as stated above, be rolled into the hollow fiber bundle of set diameter, rule then, carefully be inserted in the package shell, carry out sealed at both ends encapsulating and cutting arrangement according to a conventional method; If the membrane module of preparation is the closed-in construction of rule, then need according to the inside dimension ruling doughnut curtain of frame assembly and the length and the width of filter, doughnut and filter are replaced, fitly are emitted within the component framework, carry out sealed at both ends encapsulating and cutting housekeeping then.The sealed glue of filter is fixed between the fibrage in the membrane module that so makes, and the position between the same fibers in the fibrous layers interfixes, and is coupled to one, has increased the whole anti-hydraulic blow intensity of fiber; Filter between the fibrage has not only effectively hindered the mutual gathering between the fibrage, and has improved the fiber impact resistance to a certain extent, has increased the aqueous solution and has flowed by the irregular of rete.
Described hollow-fibre membrane comprises various organic material hollow-fibre membranes.
In the described fibre curtain between the fiber apart from the 0.1-10 millimeter, between the thickness 0.05-5 millimeter of litzendraht wire, two litzendraht wires apart from the 3-1000 millimeter.
The thickness 0.05-10 millimeter of described filter, the porosity 40-99.99% of filter, 0.25 square millimeter-0.5 square metre of the area of the single mesh of filter.
Described membrane module shell is provided with the import and the outlet of fluid, and each is connected the two ends of membrane module shell with a tail cap, and two tail caps are respectively established the import or export of fluid.
The utility model hollow fiber film assembly can effectively avoid the fiber in the use to build up phenomenon, can keep the even distribution of hollow-fibre membrane in membrane module in the use, improved the impact strength of hollow-fibre membrane, effectively reduce the destruction that the interior hollow-fibre membrane of membrane module is subjected to hydraulic impact, the anomalous water that improves the hollow-fibre membrane surface flows, thereby significantly improves the service life and the antifouling property that see through separative efficiency, raising film of hollow fiber film assembly.
In addition, method of the present utility model is applicable to that equally also with doughnut or thin plastic pipe be the manufacturing of the heat exchanger of main heat exchange element, the heat conduction efficiency of the unit's of significantly improving heat exchanger etc.
Description of drawings
Fig. 1 is a fibrage window schematic diagram: 1, doughnut, 2, litzendraht wire, 3, the litzendraht wire node;
Fig. 2 is the filter schematic diagram: 4, mesh, 5, rack;
Fig. 3 is the cross-sectional structure schematic diagram that doughnut is arranged in the membrane module.
The specific embodiment
According to structure shown in Figure 1, hollow-fibre membrane (1) is used litzendraht wire (2) to be woven into curtain equably, and the distance in the doughnut curtain between the doughnut is determined with the tightness that weaves by the thickness of litzendraht wire (2), litzendraht wire node (3) size.
The filter (shown in Figure 2) that doughnut curtain (shown in Figure 1) is selected together is superimposed and is rolled into the hollow fiber bundle of set diameter, rule, carefully be inserted in the package shell of barrel formula, carry out the sealing encapsulating and the cutting arrangement at two ends according to a conventional method, can make the hollow fiber film assembly of shell-and-tube cylindrical structural; If the membrane module of preparation is the closed-in construction of rule, need be according to the inside dimension ruling doughnut curtain of frame assembly and the length and the width of filter, doughnut curtain and filter are replaced, fitly are emitted within the component framework, carry out the sealing encapsulating and the cutting housekeeping at two ends then, the hollow fiber film assembly that can obtain having above-mentioned advantage.
Film: the nonpolar hollow-fibre membrane of polyvinylidene fluoride porous, porosity 50%; Litzendraht wire: nylon, 0.2 millimeter is thick, 3 millimeters of the distances between interior two litzendraht wires of fibre curtain; Filter: nylon, 0.5 millimeter of thickness, voidage 99%; Membrane module form: shell-and-tube cylindrical structural; Experiment test: direct contact type film distillation, 65 ℃ of brine stream are through the shell of doughnut, and cooling water flow is through the inboard of doughnut.
The product water flux of film: 15kg/m
2-h.
Comparative Examples 1
The form of film and membrane module is identical with embodiment 1, but does not carry out any type of braiding between the doughnut in the manufacture process of membrane module, does not also utilize filter to carry out isolation between the fiber; The experiment test condition is with embodiment 1.
The product water flux of film: 11kg/m
2-h.
Film: the nonpolar hollow-fibre membrane of polypropylene porous, porosity 68%; Litzendraht wire: polypropylene, 0.3 millimeter is thick, 40 millimeters of the distances between interior two litzendraht wires of fibre curtain; Filter: polypropylene, 0.5 millimeter of thickness, voidage 98%; Membrane module form: sheet frame cross-current type structure; Experiment test: the flow through shell of doughnut of decompression type film distillation, 85 ℃ of seawater, vacuum is granted the inboard of doughnut.
The product water flux of film: 38kg/m
2-h.
Comparative Examples 2
The form of film and membrane module is identical with embodiment 2, but does not carry out any type of braiding between the doughnut in the manufacture process of membrane module, does not also utilize filter to carry out isolation between the fiber; The experiment test condition is with embodiment 2.
The product water flux of film: 29kg/m
2-h.
Film: polyether sulfone ultrafiltration hollow-fibre membrane, porosity 50%; Litzendraht wire: acrylic, 1 millimeter is thick, 20 millimeters of the distances between interior two litzendraht wires of fibre curtain; Filter: polyvinyl chloride, 0.6 millimeter of thickness, voidage 96%; Membrane module form: shell-and-tube cylindrical structural; Experiment test: wastewater from fermentation industry hyperfiltration treatment, external-compression type.
The product water flux of film: 5kg/m
2-h.
Comparative Examples 3
The form of film and membrane module is identical with embodiment 3, but does not carry out any type of braiding between the doughnut in the manufacture process of membrane module, does not also utilize filter to carry out isolation between the fiber; The experiment test condition is with embodiment 3.
Membrane flux: 76kg/m
2-h.
Embodiment 4
Film: the nonpolar hollow-fibre membrane of polytetrafluoroethylene (PTFE) porous, porosity 70%; Litzendraht wire: polytetrafluoroethylene (PTFE), 0.5 millimeter is thick, 100 millimeters of the distances between interior two litzendraht wires of fibre curtain; Filter: polyethylene, 0.4 millimeter of thickness, voidage 97%; Membrane module form: shell-and-tube cylindrical structural; Experiment test: the removing of ammonia in the aqueous solution in the chemical synthesis industrial process, membrane contactor, absorption liquid are dilute sulfuric acid aqueous solution.
The ammonia flux of film: 0.22mol/m
2-h.
Comparative Examples 4
The form of film and membrane module is identical with embodiment 4, but does not carry out any type of braiding between the doughnut in the manufacture process of membrane module, does not also utilize filter to carry out isolation between the fiber; The experiment test condition is with embodiment 4.
Membrane flux: 0.14kg/m
2-h.
Claims (6)
1, a kind of efficient hollow fiber film assembly device, it is characterized by, comprise membrane module shell and curtain formula hollow-fibre membrane and filter in the membrane module shell, doughnut curtain in the membrane module shell and filter repeat to be superimposed with discharging regularly with the order of doughnut curtain, filter or filter, doughnut curtain.
2, hollow fiber film assembly device according to claim 1 is characterized in that described membrane module shell is provided with the import and the outlet of fluid.
3, hollow fiber film assembly device according to claim 1, it is characterized in that hollow-fibre membrane is woven into the doughnut curtain regularly with litzendraht wire, distance in the doughnut curtain between the fiber is the 0.1-10 millimeter, the diameter of litzendraht wire is the 0.05-5 millimeter, and the distance between two litzendraht wires is the 3-1000 millimeter.
4, hollow fiber film assembly device according to claim 1, it is characterized in that lining is with filter between doughnut curtain and the curtain, the thickness of filter is the 0.05-10 millimeter, the porosity 40-99.99% of filter, 0.25 square millimeter-0.5 square metre of the area of the single mesh of filter.
5, hollow fiber film assembly device according to claim 1 is characterized in that doughnut curtain and filter repeat to be superimposed with regularly with the order of doughnut curtain, filter or filter, doughnut curtain to be emitted in the membrane module shell.
6, hollow fiber film assembly device according to claim 1 is characterized in that the two ends of membrane module shell respectively are connected with a tail cap, and two tail caps are respectively established the import or export of fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200982142U CN201179426Y (en) | 2007-11-30 | 2007-11-30 | High-efficiency hollow fiber film assembly apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200982142U CN201179426Y (en) | 2007-11-30 | 2007-11-30 | High-efficiency hollow fiber film assembly apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN201179426Y true CN201179426Y (en) | 2009-01-14 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200982142U Expired - Lifetime CN201179426Y (en) | 2007-11-30 | 2007-11-30 | High-efficiency hollow fiber film assembly apparatus |
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| CN (1) | CN201179426Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420570A (en) * | 2019-08-06 | 2019-11-08 | 天津工业大学 | A kind of cuboid membrane module based on townhouse hollow fiber form nonwoven fabrics composite film |
-
2007
- 2007-11-30 CN CNU2007200982142U patent/CN201179426Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110420570A (en) * | 2019-08-06 | 2019-11-08 | 天津工业大学 | A kind of cuboid membrane module based on townhouse hollow fiber form nonwoven fabrics composite film |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090114 |