CN103114343B - Spinneret plate assembly for manufacturing nineteen-channel hollow fiber membrane - Google Patents
Spinneret plate assembly for manufacturing nineteen-channel hollow fiber membrane Download PDFInfo
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- CN103114343B CN103114343B CN201310065825.7A CN201310065825A CN103114343B CN 103114343 B CN103114343 B CN 103114343B CN 201310065825 A CN201310065825 A CN 201310065825A CN 103114343 B CN103114343 B CN 103114343B
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- needle tubing
- plate
- distribution plate
- cover plate
- spinnerets
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Abstract
The invention discloses a nineteen-channel hollow fiber membrane and a spinneret plate assembly for manufacturing the nineteen-channel hollow fiber membrane, and belongs to the field of hollow fiber membranes. The spinneret plate assembly is of a composite cavity structure and is provided with nineteen insertion needle tubes, one of the nineteen insertion needle tubes is positioned in the center of the spinneret plate assembly, six insertion needle tubes encircle the center of the spinneret plate assembly, and the other twelve insertion needle tubes encircle the six insertion needle tubes and are circumferentially and uniformly distributed on the spinneret plate assembly. The spinneret plate assembly comprises a cover plate, a distribution plate and a bottom plate, and the cover plate, the distribution plate and the bottom plate are assembled by the aid of inner hexagon screws and are concentric with one another by the aid of positioning grooves. One end of each insertion needle tube is inlaid in the center of the lower portion of the cover plate, the other end of each insertion needle tube is protruded out of the lower end of the bottom plate by a certain length, and a heating sleeve is assembled on the spinneret plate assembly in a surrounding manner. Besides, distances among the needle tubes and the distance from each needle tube to the inner wall of an extrusion opening can be adjusted, so that a manufactured membrane material structure can be controlled. The nineteen-channel hollow fiber membrane and the spinneret plate assembly have the advantages that the nineteen-channel hollow fiber membrane is excellent in mechanical performance and high in filling density, and can be used for separating liquid from gas.
Description
Technical field
The invention belongs to hollow-fibre membrane field, be specifically related to a kind of spinneret component for the production of 19 passage hollow-fibre membranes.Gas and fluid separation applications use is applicable to by the hollow-fibre membrane of gained of the present invention.
Background technology
Hollow-fibre membrane has that unit volume loading density is large, structure is simple, without the need to any supporter, be easy to cleaning, low energy consumption, do not produce the advantages such as secondary pollution, has been widely used in the every field such as extensive desalinization, medicine, food, chemical industry, sewage disposal, gas separaion.What generally adopt at present is single channel polymer hollow fiber membrane, because film silk intensity is not enough, inevitably occurs fracture of wire phenomenon in the application, causes whole membrane module to lose efficacy, and then constitute a threat to whole piece-rate system.
The effect of spinnerets is by the high polymer molten of viscous state or solution, is transformed into the thread having particular cross section shape, through setting medium as air or coagulating bath are solidified to form strand by micropore.Critical component prepared by polymer hollow fiber membrane is spinneret component.For this problem, in recent years, researchers set about carrying out various improvement on spinnerets, or adopt multichannel mode, or adopt the mode of composite membrane, attempt to overcome these problems.World patent (WO 2006/012920 A1) report, by the design of spinnerets, increases single channel and multi-channel membrane local wall thickness, to improve film-strength.But the increase in film silk gap obviously can reduce membrane module loading density.Chinese invention patent (CN101920172 A) reports that polyvinyl chloride multichannel hollow-fibre membrane prepared by employing three hole spinnerets, but its spinnerets and traditional single hole spinnerets similar, only increase needle tubing quantity, and due to its section aperture area, to account for gross sectional area less, per membrane area needs expend more membrane material.In order to increase film-strength, be unlikely to again to increase membrane resistance, people consider to provide film-strength by supporting layer, and surface functional layer provides membrane separating property, has occurred single pass composite membrane like this.Chinese invention patent (CN 101766960 A) report adopts a kind of preparation method of composite hollow fiber membrane.The method adopts polyphenylene sulfide to be reinforcing material, extrudes with single channel film silk from spinnerets simultaneously, implants film silk supporting layer, thus improves film-strength.But because hollow-fibre membrane wall thickness is thinner, supporting layer is easily departed from the polyphenylene sulfide position of implantation, not only increases preparation difficulty, also easily causes film function of surface layer defects.
Generally speaking, in the use procedure of hollow fiber film assembly, every root film silk occurs that the probability of fracture of wire is the same.Film silk structure becomes multichannel from single channel, and first, the increase of structural strength reduces the probability of single film silk fracture of wire.Secondly, needed for the assembly that the increase of port number means same effective film area, film silk radical reduces, thus reduce further the probability of assembly fracture of wire.2012, periodical " Desalination and Water Treatment " (desalination and water treatment) the 42nd volume 24-29 page reported the relation between seven passage hollow-fibre membrane external diameter sizes, aperture gap length and film loading density and per membrane area membrane material consumption.They find: when film hole diameter is fixed as 0.9mm, can obtain being less than single channel hollow-fibre membrane when seven apertures in the human head film external diameter is less than 4.02mm on per membrane area membrane material consumption.When seven apertures in the human head film external diameter is less than 3.92mm, its loading density is greater than single channel hollow-fibre membrane.Simultaneously, the document reports two kinds of multichannel hollow-fibre membrane products: passage aisle seven passage hollow-fibre membrane (external diameter 4.0mm, internal diameter 0.9mm) and major path seven passage hollow-fibre membrane (external diameter 6.0mm, internal diameter 1.5mm), its film silk unit volume membrane area is respectively 1575m
2/ m
3and 1167m
2/ m
3(see table 3).
In raw material use, multichannel hollow-fibre membrane, owing to being integrated by many film silks, reduces the raw material use amount of per membrane area thus reduces production cost, is one of developing direction of following masking.But, for reducing raw material use amount further, be but difficult to by reducing membranous wall abundant existing.Seven apertures in the human head film external diameter reduces further, and little interporal lacuna can be made sharply to reduce, thus strengthens the preparation difficulty of seven apertures in the human head film, reduces seven apertures in the human head membrane structure intensity, finally affects film serviceability and membrane lifetime.Chinese patent (CN201216922Y) report adopts pvc material to prepare seven passage milipore filters, its film silk external diameter 3.8mm, internal diameter 0.7mm.As can be seen here, its seven apertures in the human head film external diameter reduces to reduce hole diameter for cost, this reduces the effective film area of single film silk.And in actual use, in seven apertures in the human head film, single hole diameter is too small, easily results in blockage or fouling membrane, affects the service efficiency of membrane material.
Summary of the invention
For the deficiencies in the prior art, the object of the present invention is to provide a kind of spinneret component for the production of 19 passage hollow-fibre membranes.By design and the regulation and control of spinneret component structure, 19 passage hollow-fibre membrane unit volume membrane areas prepared by realization are large, mechanical performance is high, thus to solve in the hollow-fibre membrane use procedure that prior art exists easily fracture of wire, and the problem such as multichannel per membrane area material cost is too high usually, filling area is low.Gas and fluid separation applications use is applicable to by the hollow-fibre membrane of gained of the present invention.
The present invention relates to a kind of spinneret component for the production of 19 passage hollow-fibre membranes, this spinneret component comprises distribution plate, cover plate and base plate, wherein,
Described cover plate central authorities implant nineteen needle tubing, one of them needle tubing is positioned at central authorities, six needle tubings to be three times on needle tubing external diameter at diameter around central needle tubing and to be circumferentially uniformly distributed, 12 needle tubings around circumferentially equally distributed six needle tubings diameter six being circumferentially uniformly distributed doubly to needle tubing external diameter;
Distribution plate central tube is placed in bottom hole, cover plate covers on distribution plate, stainless steel screw is all adopted to connect between cover plate and distribution plate, between distribution plate and base plate, at plate Contact face configuration seal groove, built-in sealing ring, and in spinnerets edge configuration locating slot structure, thus ensure that needle tubing, distribution plate central tube and bottom hole three are concentric;
Distribution plate inner chamber is provided with the fluid-dispensing structure of six equal portions, and in distribution plate, the heart channel of Hang-Shaoyin central tube leads to bottom spinnerets, and central tube diameter is 7-10 times of needle tubing external diameter.The polishing of distribution plate central tube inwall.
Further, described needle tubing one end is bumped in cover plate, and the other end gives prominence to spinnerets base plate.
Described needle tubing one end is preferably bumped into cover plate middle lower surface plate body and reaches 5 – 10mm, and perpendicularity is high, good airproof performance.Described needle tubing end is outstanding spinnerets base plate 1 – 3mm preferably.
Provide external diameter and the draw ratio of needle tubing further, needle tubing draw ratio >=20 of this spinnerets, each needle tubing external diameter is 0.4-1.5mm.
Described cover plate is provided with main inlet port and core liquid entrance, and wherein main inlet port is for importing casting solution, and core liquid entrance is for importing interior coagulating agent.
Described spinneret component also can on the cover board integrated heating cover, and described heating jacket is encircled spinnerets and fixed, power 100-300W, and assembly temperature can be made controlled within the scope of 10-60 DEG C.
Accessible site temperature probe pedestal on described cover plate, realizes temperature programmed control for connecting temperature probe.
The design of described distribution plate inner-cavity structure, according to fluid mechanics principle and submergence inversion of phases membrane formation mechanism, adopt the fan-shaped column structure design of six equal portions can realize casting solution in cavity by non-uniform flow to the change that evenly circulates.The polishing of distribution plate central tube inwall.
A cavity also can be there is between distribution plate and base plate, six equal portions fluid-dispensing structure of similar distribution plate are provided with in cavity, and the secondary inlet port be connected with this cavity is set on base plate, cavity between described distribution plate and base plate can import the second casting solution or coagulating agent, together extrude with the casting solution in cover plate and distribution plate cavity, realize the structure designability of multichannel doughnut film outer surface.
The present invention also provides the 19 passage hollow-fibre membranes adopting above-mentioned spinneret component to prepare.
Compared with prior art, the technology of the present invention advantage is:
1) be provided with the fan-shaped column structure of distribution plate, ensure the effective distribution of casting solution in spinnerets;
2) increase needle tubing draw ratio, thus make casting solution steady extruding;
3) needle tubing end is given prominence to design and can be prevented from casting solution and coagulating agent premature contact from solidifying blocking spinnerets;
4) by optimizing spinnerets needle tubing arrangement position, the film sizes such as regulation and control film external diameter, hole diameter, little interporal lacuna.The film silk radical needed for 19 passage hollow-fibre membrane per membrane area adopting the present invention to prepare obviously reduces, and the membrane area in unit volume comparatively seven passages significantly increases, and film-strength is higher, and membrane module wire broken rate is lower.
In order to investigate single channel and the difference of multichannel hollow-fibre membrane in mechanical performance, measure (GB/T3916-1997) with reference to fabric roll around yarn single yarn ultimate strength and elongation at break, table 2 lists the mechanical performance of single channel and multichannel ps hollow fiber uf membrane.As shown in Table 2, along with the increase of port number, fracture strength becomes the increase of the order of magnitude, and ultimate strength is also significantly increased.
Table 1 port number is on the impact of film aperture area and little interporal lacuna
Table 2 single channel and multichannel ps hollow fiber uf membrane mechanical performance
In addition, compared with seven passage hollow-fibre membranes of same outer diameter (6.0mm) or same inner diameter (0.9mm), find that 19 passage hollow fiber film thread unit volume membrane areas are up to 1900m
2/ m
3(see table 3).The key preparing 19 passage hollow-fibre membranes is spinnerets, yet there are no the relevant report of 19 passage polymer hollow fiber membrane spinneret components.
Relation between table 3 hollow-fibre membrane internal-and external diameter, port number and elementary membrane volume and membrane area
In sum, on seven apertures in the human head film basis, the port number increasing film silk further both can increase film-strength, reduces again per membrane area raw material use amount.According to spinnerets Principle of Mechanical Designing and spinning technique requirement, consider that when aperture pitch is not less than aperture radius, film cross-section morphology is regular, and film-strength is high at seven apertures in the human head film periphery distribution some passages.Research finds, under hole diameter and film silk external diameter the same terms, compared with 18 passage hollow-fibre membranes, in 19 passage hollow-fibre membrane elementary membrane cross-sectional areas, aperture area is higher, and distribution more rationally (see table 1).Equally, under identical hole diameter and aperture gap condition, compared with 20 passage hollow-fibre membranes, in 19 passage hollow-fibre membrane elementary membrane cross-sectional areas, aperture area is higher.Otherwise, improve aperture area in elementary membrane cross-sectional area will increase difficulty prepared by doughnut by reducing little interporal lacuna.
Beneficial effect of the present invention is:
The present invention is a kind of spinneret component for the production of 19 passage hollow-fibre membranes.Spinnerets is composite cavity structure, containing 19 insert needle tubings, one of them is positioned at central authorities, six around central authorities, 12 are circumferentially uniformly distributed respectively around six.The present invention includes cover plate, distribution plate and base plate.Cover plate, distribution plate and base plate all adopt soket head cap screw to assemble, and realize each parts concentric by locating slot.Nineteen needle tubing one end is embedded in cover plate lower central, and the other end gives prominence to base plate lower end certain length, and heating jacket encircles spinnerets assembling.In addition, by between needle tubing and the adjustment of needle tubing and extrusion inwall spacing, prepared membrane material structure-controllable can be realized.Adopt the present invention can prepare the 19 passage hollow-fibre membranes that mechanical performance is excellent, loading density is high, 19 prepared passage hollow-fibre membranes can be used for liquids and gases and are separated.
Accompanying drawing explanation
Fig. 1 is the sub-assembly cross-sectional structure schematic diagram of an embodiment of the present invention;
Fig. 2 is spinnerets base plate discharge outlet pass schematic diagram.
Figure 3 – 8 of the present inventionly disassembles figure;
Fig. 3 is cover plate front view structural representation;
Fig. 4 is cover plate side view structural representation;
Fig. 5 is distribution plate front view structural representation;
Fig. 6 is distribution plate side view structural representation;
Fig. 7 is base plate front view structural representation;
Fig. 8 is base plate side view structural representation;
Number in the figure:
1-needle tubing; 2-heating jacket; 3-distribution plate; 4-seal groove; The main inlet port of 5-; 6-cover plate; 7-core liquid entrance; 8-temperature probe pedestal; 9-locating slot structure; 10-inlet port.
Detailed description of the invention
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment
For the production of a spinneret component for 19 passage hollow-fibre membranes, this spinneret component comprises distribution plate 3, cover plate 6 and base plate 11, wherein,
Described cover plate central authorities implant nineteen needle tubing 1, one of them needle tubing is positioned at central authorities, six needle tubings to be three times on needle tubing external diameter at diameter around central needle tubing and to be circumferentially uniformly distributed, 12 needle tubings around circumferentially equally distributed six needle tubings diameter six being circumferentially uniformly distributed doubly to needle tubing external diameter;
Distribution plate 3 central tube is placed in base plate 11 through hole, cover plate 6 covers on distribution plate 3, stainless steel screw is all adopted to connect between cover plate 6 and distribution plate 3, between distribution plate 3 and base plate 11, at plate Contact face configuration seal groove 4, built-in sealing ring, and in spinnerets edge configuration locating slot structure 9, thus ensure that needle tubing, distribution plate central tube and bottom hole three are concentric;
Distribution plate inner chamber is provided with the fluid-dispensing structure of six equal portions, and in distribution plate, the heart channel of Hang-Shaoyin central tube leads to bottom spinnerets, and wherein, central tube diameter is 7-10 times of needle tubing external diameter.。
Further, described needle tubing one end is bumped in cover plate, and the other end gives prominence to spinnerets base plate.
Described needle tubing one end is preferably bumped into cover plate middle lower surface plate body and reaches 5 – 10mm, and perpendicularity is high, good airproof performance.Described needle tubing end is outstanding spinnerets base plate 1 – 3mm preferably.
Provide external diameter and the draw ratio of needle tubing further, needle tubing draw ratio >=20 of this spinnerets, each needle tubing external diameter is 0.4-1.5mm.
Described cover plate 6 is provided with main inlet port 5 and core liquid entrance 7, and wherein main inlet port 5 is for importing casting solution, and core liquid entrance 7 is for importing interior coagulating agent.
Described spinneret component also on the cover board can overlap 2 by integrated heating, and described heating jacket 2 is encircled spinnerets and fixed, power 100-300W, and assembly temperature can be made controlled within the scope of 10-60 DEG C.
Accessible site temperature probe pedestal 8 on described cover plate, realizes temperature programmed control for connecting temperature probe.
The design of described distribution plate 3 inner-cavity structure, according to fluid mechanics principle and submergence inversion of phases membrane formation mechanism, adopt the fan-shaped column structure design of six equal portions can realize casting solution in cavity by non-uniform flow to the change that evenly circulates.The polishing of distribution plate central tube inwall.
A cavity also can be there is between distribution plate and base plate, six equal portions fluid-dispensing structure of similar distribution plate are provided with in cavity, and the secondary inlet port 10 be connected with this cavity is set on base plate, cavity between described distribution plate 3 and base plate 11 can import the second casting solution or coagulating agent, together extrude with the casting solution in cover plate and distribution plate cavity, realize the structure designability of multichannel doughnut film outer surface.
Above-mentioned spinneret component can be adopted to prepare 19 passage hollow-fibre membranes.
The above; be only the present invention's preferably detailed description of the invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. for the production of a spinneret component for 19 passage hollow-fibre membranes, it is characterized in that: this spinneret component comprises distribution plate (3), cover plate (6) and base plate (11), wherein,
Described cover plate central authorities implant nineteen needle tubing (1), one of them needle tubing is positioned at central authorities, six needle tubings to be three times on needle tubing external diameter at diameter around central needle tubing and to be circumferentially uniformly distributed, 12 needle tubings around circumferentially equally distributed six needle tubings diameter six being circumferentially uniformly distributed doubly to needle tubing external diameter;
Distribution plate (3) central tube is placed in base plate (11) through hole, cover plate (6) covers on distribution plate (3), stainless steel screw is all adopted to connect between cover plate (6) and distribution plate (3), between distribution plate (3) and base plate (11), in plate Contact face configuration seal groove (4), built-in sealing ring, and at spinnerets edge configuration locating slot structure (9), concentric to ensure needle tubing, distribution plate central tube and bottom hole three;
Described distribution plate (3) inner chamber is provided with the fluid-dispensing structure of six equal portions, and in distribution plate, the heart channel of Hang-Shaoyin central tube leads to bottom spinnerets, and central tube diameter is 7-10 times of needle tubing external diameter;
Described needle tubing one end is bumped in cover plate, and the other end gives prominence to spinnerets base plate.
2. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, is characterized in that: described needle tubing one end is bumped into cover plate middle lower surface plate body and reaches 5-10mm, and described needle tubing end gives prominence to spinnerets base plate 1-3mm.
3. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, it is characterized in that: needle tubing draw ratio >=20 of this spinnerets, each needle tubing external diameter is 0.4-1.5mm.
4. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, is characterized in that: described cover plate (6) is provided with main inlet port (5) and core liquid entrance (7).
5. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, it is characterized in that: described spinneret component also on the cover board integrated heating cover (2), described heating jacket (2) is encircled spinnerets and is fixed, power 100-300W.
6. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, is characterized in that: integrated temperature control probe base (8) on described cover plate, realizes temperature programmed control for connecting temperature probe.
7. the spinneret component for the production of 19 passage hollow-fibre membranes according to claim 1, it is characterized in that: between distribution plate and base plate, also there is a cavity, be provided with fluid-dispensing structure in cavity, and the secondary inlet port (10) be connected with this cavity is set on base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065825.7A CN103114343B (en) | 2013-03-01 | 2013-03-01 | Spinneret plate assembly for manufacturing nineteen-channel hollow fiber membrane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310065825.7A CN103114343B (en) | 2013-03-01 | 2013-03-01 | Spinneret plate assembly for manufacturing nineteen-channel hollow fiber membrane |
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|---|---|
| CN103114343A CN103114343A (en) | 2013-05-22 |
| CN103114343B true CN103114343B (en) | 2015-06-17 |
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| CN201310065825.7A Expired - Fee Related CN103114343B (en) | 2013-03-01 | 2013-03-01 | Spinneret plate assembly for manufacturing nineteen-channel hollow fiber membrane |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103272500A (en) * | 2013-06-19 | 2013-09-04 | 天津工业大学 | Nineteen-channel polymer hollow fiber membrane with circular structure |
| CN103352263B (en) * | 2013-07-08 | 2015-08-19 | 常熟市沪联印染有限公司 | A kind of hollow spinneret plate |
| CN106521654B (en) * | 2016-10-21 | 2019-04-12 | 中国科学院大连化学物理研究所 | Hollow-fibre membrane spinning nozzle and the method for preparing hollow-fibre membrane |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54125719A (en) * | 1978-03-17 | 1979-09-29 | Teijin Ltd | Spinneret assembly for composite fibers |
| DE69618500D1 (en) * | 1995-06-06 | 2002-02-21 | Water Res Commission Pretoria | Process for producing a hollow fiber membrane |
| CN201056594Y (en) * | 2007-05-16 | 2008-05-07 | 天津市蓝十字膜技术有限公司 | Ternary ring-shaped thread spraying orifice type spinning jet used for producing hollow fiber film |
| CN201324603Y (en) * | 2008-05-20 | 2009-10-14 | 深圳市奥力原环境科技有限公司 | Multi-hole core hollow fiber film yarn |
| CN101560699A (en) * | 2009-05-25 | 2009-10-21 | 天津工业大学 | Melt spinning head for multi-composition hollow fiber composite membrane |
| CN203295672U (en) * | 2013-03-01 | 2013-11-20 | 天津工业大学 | Nineteen-channel hollow fiber film and spinneret plate assembly used for producing same |
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