CN101601971A - The special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut - Google Patents
The special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut Download PDFInfo
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- CN101601971A CN101601971A CNA2009101489508A CN200910148950A CN101601971A CN 101601971 A CN101601971 A CN 101601971A CN A2009101489508 A CNA2009101489508 A CN A2009101489508A CN 200910148950 A CN200910148950 A CN 200910148950A CN 101601971 A CN101601971 A CN 101601971A
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Abstract
The invention provides a kind of hollow inside that will need separated mixture to inject hollow-fibre membrane, make the special-purpose hollow-fibre membrane of the inner injection of its doughnut that sees through the perforated membrane that comprises active layer, it is characterized in that, after making possesses the active tunic of tubulose of hollow, directly make up the mixed weaving thing of macromolecular fibre braid, metal wire braid or macromolecular fibre and metal wire, expand thereby to the inner injection of hollow high temperature, high pressure mixing liquid the time, suppress active tunic at its outer surface.According to the present invention, the original mixed liquid of high temperature, high pressure can be injected the hollow of hollow-fibre membrane, mixed liquor is separated into component substances; And because of the original stock hollow-fibre membrane inside of flowing through, reduce the dead volume in the film module, improve the contact rate on original mixed liquid unit volume and film surface, reduce required membrane area.
Description
Technical field
The present invention relates to a kind of hollow-fibre membrane, especially a kind of hollow inside that will need separated mixture to inject hollow-fibre membrane makes the special-purpose hollow-fibre membrane of the inner injection of its doughnut that sees through the perforated membrane (hereinafter to be referred as " active tunic ") that comprises active layer.
Background technology
Utilize hollow-fibre membrane to separate mixed liquor, normally need separated mixture (below, also claim " original mixed liquid ") to inject the hollow-fibre membrane outside and exert pressure, thereby make material be expelled to hollow through hollow-fibre membrane.This be because, if need separated mixture to inject hollow inside and exert pressure, then because of the ability to bear of film a little less than, will under 5-10 atmospheric pressure, be destroyed.
In the prior art, usually use at macromolecular fibre etc. and make up the braid outer surface that forms, form the braid enhancement mode hollow-fibre membrane of active tunic.But braid enhancement mode hollow-fibre membrane, when the inner injection of its hollow needs separated mixture to separate, also there are the following problems.
Promptly, be coated on the active tunic of macromolecular fibre braid outer surface, bear certain pressure (external pressure) though can rely on the humidification of braid from the doughnut outside, but as if original mixed liquid being injected hollow inside and exerting pressure, then the slit that sees through braid because of the interior pressure that applied directly acts on the active layer that is coated on its outer surface, and therefore active tunic is very easily destroyed.As mentioned above, the ability to bear of internally pressing because of hollow-fibre membrane a little less than, therefore when utilizing hollow-fibre membrane to separate mixed liquor, usually original mixed liquid is injected the outside of hollow-fibre membrane and from the inner material that oozes out that reclaims of the control of hollow-fibre membrane.
But, said external is injected the inner method that reclaims penetrant of mixed liquor, produces dead volume (deadvolume) in film module, therefore needs more original mixed liquid, and because of reducing the contact rate on original mixed liquid unit volume and film surface, required membrane area increases.Especially, in hollow fiber bundle inside, because of original mixed liquid length direction along doughnut between doughnut flows, cause forming the channelling effect of original mixed liquid film, therefore when injecting multiple original mixed liquid, the undercompounding between original mixed liquid reduces separative efficiency.
The braid of formation braid enhancement mode hollow-fibre membrane is mainly made up by macromolecular fibre and is formed, usually adopt materials such as polyester, nylon, polyamide, polypropylene, polyethylene, and be used for the hollow-fibre membrane of high temperature diffusion barrier technology, also select for use glass fibre as the braid material.When utilizing macromolecular fibre establishment braid, the thickness of braid and internal diameter depend on employed fiber, constitute thickness (Denier), fine rule quantity and the used fiber number of lines of the fine rule of single (yarn).Though can select suitable polymer fiber material for use according to purposes, the application of braid enhancement mode hollow-fibre membrane mainly is defined in the membrane separation process of handling non-dissolubility solution under the normal temperature condition.This be because, though the enhancing by braid has improved tensile strength, promptly the load meter along the film length direction is revealed excellent characteristic, to vertically acting on the load on film surface, especially from the inner outwards applied pressure of hollow-fibre membrane, its ability to bear a little less than.For example, macromolecular fibre braid enhancement mode hollow-fibre membrane, in the reverse osmosis membrane separation technology of 20 above atmospheric pressure conditions, if to the inner original mixed liquid that injects of hollow, then the braid pressurized expands along the radioactive ray direction, thereby cause being coated on the destruction of the active tunic on the braid, reduce the performance of film.Therefore, in the time of under high temperature, high pressure, will needing separated mixture to inject the hollow inside of hollow-fibre membrane, make up braid in the outside of hollow-fibre membrane, can not fundamentally deal with problems for the resistance to pressure that improves hollow-fibre membrane.
Summary of the invention
For solving the problem of above-mentioned prior art hollow-fibre membrane, the objective of the invention is to, provide that a kind of doughnut is inner to inject special-purpose hollow-fibre membrane, the mixed liquor of high temperature, high pressure is injected the hollow inside of hollow-fibre membrane, mixed liquor is separated into component substances.
Another object of the present invention is to, provide the inner injection of a kind of doughnut special-purpose hollow-fibre membrane, thoroughly prevent raceway groove (channeling) effect that when the outside injection of hollow-fibre membrane original mixed liquid, is taken place.
Another purpose of the present invention is, provides a kind of doughnut inner special-purpose hollow-fibre membrane, the contact rate on raising mixed liquor unit volume and film surface, the raising permeability and separation efficient injected.
For achieving the above object, the inner feature of injecting special-purpose hollow-fibre membrane of doughnut of the present invention is, after making possesses the active tunic of tubulose of hollow, directly make up the mixed weaving thing of macromolecular fibre braid, metal wire braid or macromolecular fibre and metal wire, expand thereby to the inner injection of hollow high temperature, high pressure mixing liquid the time, suppress active tunic at its outer surface.
Poor because of macromolecular material hollow-fibre membrane resistance to pressure, therefore, need guarantee the mechanical strength that hollow-fibre membrane is enough, to bear pressure from original mixed liquid in order to separate to the inner high pressure original mixed liquid that injects of hollow-fibre membrane.At the hollow-fibre membrane that mixture is injected hollow inside, if wish that braid need be positioned at active tunic outside by the braid enhance mechanical strength.For this reason, the present invention makes the active tunic of tubulose, directly makes up braid in its outside afterwards.At this moment, as the braid that reinforcing material has superior mechanical intensity, bear the whole pressure that put on hollow-fibre membrane inside, with the support hollow tunica fibrosa.At this moment, can be in above-mentioned active tunic inside, form the active layer more finer and closely woven in the mode of composite membrane than outside porous layer.It is outer and form than its more fine and closely woven active layer in inside to make active tunic with porous material, even injection high pressure original mixed liquid then also can bear pressure from original mixed liquid with enough mechanical strengths.
According to different braid materials, its allowable pressure and allowable temperature are different, and the braid of making up with macromolecular fibre is relatively poor to the contact performance of pressure, high temperature and organic solvent, therefore needs to strengthen the intensity of braid.Compared with macromolecular fibre, the mechanicalness of metal material is considerably beyond the former, and the hear resistance height, can not show the compatibility with organic solvent liquid when contacting with organic solvent, and dimensional stability is good.Therefore, when making up braid of the present invention, can mix macromolecular fibre and metal wire and make up or only make up with metal wire.
If only make up braid with metal wire, though its mechanicalness and dimensional stability are good,, therefore in high-pressure process, may damage the active tunic that is positioned at inside because of braid itself is harder, reduce the operability of making module.Therefore, when making up the hollow-fibre membrane that is used under high temperature, the condition of high voltage, the available metal line is replaced the part macromolecular fibre of braid, can mix the establishment of macromolecular fibre and metal wire.Like this, not only can improve the flowability of braid, and, also can improve institute's braid of making pressure, temperature and organic solvent stability in contact because of adopting metal wire as reinforcing material.Generally speaking, the braid that hybrid metal line and macromolecular fibre are made up, its performance to high temperature, high pressure or organic solvent contact is stable, and the film that strengthens through above-mentioned braid, its performance also must be stablized.When hybrid metal line and macromolecular fibre were made up braid, the ratio of metal wire was high more, and the mechanicalness of braid and dimensional stability are good more, but braid itself is harder, and the operability of making module reduces; Otherwise its ratio is low more, and the flowability of braid is high more, and operability is high more, but mechanicalness and dimensional stability die down.Therefore, in above-mentioned macromolecular fibre and the metal wire shuffling braid, metal wire number or the metal wire number that mixes with macromolecular fibre account for the 5-30% that all makes up number of lines and are advisable.In addition, in above-mentioned braid, keep between each metal wire and the adjacent wires equidistantly being advisable.Metal wire can adopt various metal materials such as copper, nickel, stainless steel, tin, nickel chromium triangle as used herein, and the thickness of each metal wire can adopt the diameter of 0.05-0.4mm according to the size of the hollow-fibre membrane that will work out.
The above-mentioned macromolecular fibre that is used to make up braid is fibers such as polyester, nylon, polyamide, polypropylene, polyethylene, can use the macromolecular fibre of single (yarn) form.Single is for being combined into a plurality of fine rules of certain thickness on the line of making up of single lines, and the fine rule thickness is 100-150 Denier (denier), and the hachure number is the 10-400 bar.
The thickness of each macromolecular fibre and metal wire depends on the thickness and the diameter of the braid that will make up, and in addition, in order to produce the uniform braid of outward appearance, the metal wire that is adopted and the thickness of macromolecular fibre will be consistent as far as possible.
Make up employed macromolecular fibre of above-mentioned braid or metal wire, its whole bar numbers are advisable for the 10-80 bar.
Above-mentioned active tunic comprises NF membrane (nanofiltration membrane), reverse osmosis membrane (reverse osmosismembrane), vapor permeable membrane (vapor permeation membrane), infiltrating and vaporizing membrane (pervaporationmembrane) or gas separation membrane (gas separation membrane).
Description of drawings
Fig. 1 a is the braid enhancement mode hollow-fibre membrane first embodiment part tangent plane oblique view of the present invention;
Fig. 1 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 1 a;
Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 1 c is the braid of making up shown in Fig. 1 a;
Fig. 2 a is the braid enhancement mode hollow-fibre membrane second embodiment part tangent plane oblique view of the present invention;
Fig. 2 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 2 a;
Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 2 c is the braid of making up shown in Fig. 2 a;
Fig. 3 a is braid enhancement mode hollow-fibre membrane the 3rd an embodiment part tangent plane oblique view of the present invention;
Fig. 3 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 3 a;
Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 3 c is the braid of making up shown in Fig. 3 a.
Symbol description:
1: active tunic 3: metal wire
5: macromolecular fibre 7: metal wire bobbin (bobbin)
9: macromolecular fibre bobbin 11: bobbin carrier (bobbin carrier)
The specific embodiment
Below, the specific embodiment to braid enhancement mode hollow-fibre membrane of the present invention in conjunction with the accompanying drawings is described in detail.
Fig. 1 a is the braid enhancement mode hollow-fibre membrane first embodiment part tangent plane oblique view of the present invention; Fig. 1 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 1 a; Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 1 c is the braid of making up shown in Fig. 1 a; Fig. 2 a is the braid enhancement mode hollow-fibre membrane second embodiment part tangent plane oblique view of the present invention; Fig. 2 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 2 a; Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 2 c is the braid of making up shown in Fig. 2 a; Fig. 3 a is braid enhancement mode hollow-fibre membrane the 3rd an embodiment part tangent plane oblique view of the present invention; Fig. 3 b is the braid enhancement mode hollow-fibre membrane profile shown in Fig. 3 a; Metal wire bobbin and macromolecular fibre bobbin layout drawing when Fig. 3 c is the braid of making up shown in Fig. 3 a.
First embodiment shown in Fig. 1 a and Fig. 1 b represents the active tunic 1 outside situation of only directly making up braid with macromolecular fibre; Second embodiment shown in Fig. 2 a and Fig. 2 b represents that active tunic 1 external mix, 2 metal line 3 and 34 macromolecular fibres 5 directly make up the situation of braid; The 3rd embodiment shown in Fig. 3 a and Fig. 3 b represents that active tunic 1 external mix, 4 metal line 3 and 32 macromolecular fibres 5 directly make up the situation of braid.
In conjunction with Fig. 1 c, Fig. 2 c or Fig. 3 c as can be known, work out above-mentioned braid and be the active tunic 1 that on braider, will prepare, outsidely make up braid with macromolecular fibre 5, metal wire 3 or macromolecular fibre 5 and metal wire 3 at it as core.
When utilizing metal wire to make up, shown in Fig. 2 a and Fig. 3 a, can only metal wire be wound in bobbin and make up, also can before making up, will make up after metal wire and the macromolecular fibre shuffling.But, when only metal wire being wound in bobbin, need select metal wire thicker when mixing for use with macromolecular fibre.In addition, illustrate the situation that adopts single metal wire, twine the shuffling metal wire that volume forms but also can use as required by 2-5 bar lametta at Fig. 2 a and Fig. 3 a.
As second embodiment and the 3rd embodiment, when mixing macromolecular fibre and metal wire are made up braid, as mentioned above, for making the metal wire number be about the 5-30% that all makes up number of lines, the bobbin that is equivalent to all be installed is installed in braider carrier 11 is counted the metal wire bobbin 7 of 5-30% quantity or the metal wire bobbin 7 that mixes with macromolecular fibre.At this moment, for making the spacing between each metal wire keep evenly when metal wire bobbin 7 is installed on carrier 11, it being arranged in the shape that is symmetrical in carrier 11 circular central according to quantity.If the arrangement of metal wire bobbin is asymmetric, the textile surface of then being made up out is rough evenly.
Central inner to annular carrier 11 provides tubulose active tunic 1, and the line bobbin 7,9 of making up of some is rotated around annular carrier 11, then can make up braid in active tunic 1 outside of being supplied.At this moment, in order to ensure the compactness between active tunic 1 and the braid, the 1.1-3.0 of the braid internal diameter that the external diameter of active layer hollow-fibre membrane 1 is made up for the non-activity layer before making up doubly is advisable.This be because, be the compactness between the braid that keeps active tunic 1 and make up in its outside, the external diameter of active tunic 1 needs the internal diameter of the braid made up greater than the non-activity layer.
Below, will describe the embodiment of the invention in detail, and compare with the macromolecular fibre braid enhancement mode hollow-fibre membrane of prior art.
Embodiment one
With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution is put into 35 ℃ solidification liquid---water is removed after remaining solvent and the PVP additive fully, produce internal diameter 1.1mm, the tubulose perforated membrane of external diameter 1.9mm.Be coated with the active tunic of polyvinyl alcohol layer formation tubulose of 2 μ m thickness at the perforated membrane inner surface of manufacturing.Like this, at the outside porous layer that forms of active tunic, and form than outside more fine and closely woven active layer in inside.In above-mentioned active tunic outside, make up braid with 36 300/150 polyester fiber lines, produce the special-purpose hollow-fibre membrane of the inner injection of doughnut of external diameter 2.9mm.
Embodiment two
With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution is put into 35 ℃ solidification liquid---water is removed after remaining solvent and the PVP additive fully, produce internal diameter 1.1mm, the perforated membrane of external diameter 1.9mm.Be coated with the active tunic of polyvinyl alcohol layer formation tubulose of 2 μ m thickness at the perforated membrane inner surface of manufacturing.Like this, at the outside porous layer that forms of active tunic, and form than outside more fine and closely woven active layer in inside.In above-mentioned active tunic outside, with 34 300/150 polyester fiber lines, the stainless steel wire of 2 0.2mm diameters is made up braid, produces the special-purpose hollow-fibre membrane of the inner injection of doughnut of external diameter 2.9mm.
Embodiment three
With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution is put into 35 ℃ solidification liquid---water is removed after remaining solvent and the PVP additive fully, produce internal diameter 1.1mm, the perforated membrane of external diameter 1.9mm.Be coated with the active tunic of polyvinyl alcohol layer formation tubulose of 2 μ m thickness at the hollow-fibre membrane inner surface of manufacturing.Like this, at the outside porous layer that forms of active tunic, and form than outside more fine and closely woven active layer in inside.In above-mentioned active tunic outside, with 32 300/150 polyester fiber lines, the stainless steel wire of 4 0.2mm diameters is made up braid, produces the special-purpose hollow-fibre membrane of the inner injection of doughnut of external diameter 2.9mm.
Comparative example one
Make up braid with 36 300/150 polyester fiber lines, its external diameter is 2mm, and internal diameter is 1mm.With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution evenly is applied to and puts into water after the braid outer surface it is solidified, produce the braid enhancement mode hollow-fibre membrane of the prior art that possesses perforated membrane.Be coated with the polyvinyl alcohol of 2 μ m thickness at porous film surface.
Comparative example two
With 34 300/150 polyester fiber lines, the stainless steel wire of 2 0.2mm diameters is made up braid, and its external diameter is 2.0mm, and internal diameter is 1.0mm.With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution evenly is applied to and puts into water after the braid outer surface it is solidified, produce the braid enhancement mode hollow-fibre membrane that possesses perforated membrane.Be coated with the polyvinyl alcohol of 2 μ m thickness at porous film surface.
Comparative example three
With 32 300/150 polyester fiber lines, the stainless steel wire of 4 0.2mm diameters is made up braid, and its external diameter is 2.0mm, and internal diameter is 1.0mm.With 500g polysulfones and 130g polyvinylpyrrolidone (polyvinylpyrrolidone, PVP) dimethylacetylamide (dimethyl acetamide) dissolving with 1370g forms uniform solution, then above-mentioned solution evenly is applied to and puts into water after the braid outer surface it is solidified, produce the braid enhancement mode hollow-fibre membrane that possesses perforated membrane.Be coated with the polyvinyl alcohol of 2 μ m thickness at porous film surface.
For the hollow-fibre membrane that will make in the foregoing description and the comparative example manufactures modular form, to long 1 meter, respectively insert in the C-PVC pipe that internal diameter is 1 inch after 30 hollow fiber membrane bundles, with epoxy resin porting (porting) film bundle two ends.In the pressure test of the hollow-fibre membrane of under to each condition, making, the stability that pours into 2 atmospheric pressure, 10 atmospheric pressure, 20 atmospheric pressure and 40 atmospheric air and observe film to hollow-fibre membrane inside.The hollow-fibre membrane of making under each condition has been carried out the infiltration evaporation test, and used original mixed liquid is made of the ethanol of 95% weight % and the water of 5 weight %.In the doughnut film module of embodiment one, two, three, inject original mixed liquid internally, and in the hollow-fibre membrane of comparative example one, two, three, inject original mixed liquid from the outside, meanwhile, at its rightabout, the vacuum that applies 5torr is carried out the permeability and separation experiment.The temperature of employed original mixed liquid is 60 ℃, and the initial flow-rate of original mixed liquid is 100cc/min.Detecting the seepage velocity that sees through film, the water content of penetrant, the original mixed liquid temp of module entrance and exit under the condition separately.
Table 1 shows the pressure test result of embodiment one, two, three and comparative example one, two, three.Be coated with the hollow-fibre membrane (comparative example one, two, three) of active tunic as can be known in braid exterior, under 10 above pressure conditions of atmospheric pressure, its coating is all destroyed; On the contrary, the present invention makes up the hollow-fibre membrane of braid in active tunic outside, even under 40 atmospheric pressure, still show very stablely.But, even at the special-purpose hollow-fibre membrane of the inner injection of doughnut of the present invention, only adopt macromolecular fibre to make up under the situation of braid (embodiment one), As time goes on, because of putting on the hollow-fibre membrane pressure inside, hollow-fibre membrane and braid expand to the radioactive ray direction, the attenuation gradually of the thickness of hollow-fibre membrane, though therefore hollow-fibre membrane is not destroyed, solute leakage (leak) phenomenon of active layer appears seeing through.But hybrid metal line and macromolecular fibre are made up under the situation (embodiment two, three) of braid, and hollow-fibre membrane reveals good stability to Pressure gauge.
Table 1 hollow-fibre membrane pressure stability of the present invention test result
From The above results as can be known, make up in the hollow-fibre membrane outside under the situation of braid, hollow-fibre membrane shows outstanding resistance to pressure to the mixture that injects hollow inside, makes up braid and metal wire mixed with macromolecular fibre, then can obtain better braid enhancing effect.
1: the seepage velocity (kg/m after 1 hour
2.hr);
2: the penetrant water content (weight %) after 1 hour
Table 2 hollow-fibre membrane testing permeability of the present invention result
Table 2 shows the inner infiltration evaporation membrane separating property that injects special-purpose hollow-fibre membrane and comparative example of doughnut of the present invention.The hollow-fibre membrane (embodiment one, two, three) of making up braid in the hollow-fibre membrane outside of the present invention can inject hollow-fibre membrane inside with original mixed liquid; On the contrary, at the hollow-fibre membrane (comparative example one, two, three) of braid exterior coating, because its fragile resistance to pressure need make original mixed liquid in the hollow-fibre membrane flows outside, reduce seepage velocity and separative efficiency because of the channelling effect between the hollow-fibre membrane this moment.Of the present inventionly make up the hollow-fibre membrane of braid at hollow-fibre membrane, because of above-mentioned channelling effect can taking place, and the film contact rate of original mixed liquid unit volume is higher, so seepage velocity is faster, and separative efficiency is higher.Compare with the hollow-fibre membrane of comparative example, the special-purpose doughnut film module inlet of the inner injection of doughnut of the present invention and the module outlet original mixed liquid temperature difference are significantly less than the former, and the original mixed liquid heat loss in the module is less as can be known.
By as can be known above-mentioned, the inner stability of injecting under special-purpose doughnut film high-temp., the condition of high voltage of doughnut of the present invention is higher, and film permeability and separation performance is better.
The special-purpose hollow-fibre membrane of the inner injection of doughnut of the present invention, because of the better resistance to pressure that has the high mechanical properties braid to be brought, be suitable for the membrane separation process under high temperature or the condition of high voltage, be membrane separation processes such as nanofiltration, counter-infiltration, gas separation, infiltration evaporation, steam infiltration, and its permeability and separation efficient height.
The present invention of above-mentioned formation can inject the original mixed liquid of high temperature, high pressure the hollow of hollow-fibre membrane, and mixed liquor is separated into component substances; And because of the original stock hollow-fibre membrane inside of flowing through, reduce the dead volume (dead volume) in the film module, improve the contact rate on original mixed liquid unit volume and film surface, reduce required membrane area; Thoroughly solve the channelling effect that when the outside injection of hollow-fibre membrane original mixed liquid, is taken place; In addition, because outside braid layer can play separation pad (spacer) effect to penetrant, reduce the step-down phenomenon, block length is not limited by step-down; And, because of original mixed liquid in the doughnut internal flow, reduced heat loss.
The foregoing description is only unrestricted in order to explanation the present invention, those of ordinary skill in the art is to be understood that, can make amendment, be out of shape the present invention or be equal to replacement, and not break away from the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (14)
1, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut, it is characterized in that: after making possesses the active tunic of tubulose of hollow, directly make up the mixed weaving thing of macromolecular fibre braid, metal wire braid or macromolecular fibre and metal wire, expand thereby to the inner input of hollow high temperature, high pressure mixing liquid the time, suppress active tunic at its outer surface.
2, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1, it is characterized in that: the outside of above-mentioned active tunic is a porous layer, and inside is the active layer more finer and closely woven than the outside.
3, a kind of doughnut according to claim 1 is inner injects special-purpose hollow-fibre membrane, it is characterized in that: the above-mentioned macromolecular fibre that is used for making up braid is a kind of of polyester, nylon, polyamide, polypropylene or polyethylene fibre.
4, a kind of doughnut according to claim 1 is inner injects special-purpose hollow-fibre membrane, it is characterized in that: the above-mentioned metal wire that is used for making up braid is the above metal wire of 1-2 kind of copper cash, nickel wire, stainless steel wire, solder or nichrome wire.
5, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1; it is characterized in that: in order to ensure the compactness between active tunic and the braid, before making up active layer hollow-fibre membrane external diameter be the braid internal diameter made up of non-activity layer hollow-fibre membrane 1.1-3.0 doubly.
6, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1 is characterized in that: above-mentioned macromolecular fibre is compiled the single single (yarn) that forms for the 10-400 bar fiber fine rule by 100-500 Denier (denier) thickness twines.
7, a kind of doughnut according to claim 1 is inner injects special-purpose hollow-fibre membrane, it is characterized in that: above-mentioned metal wire is the single metal wire of 0.05-0.40mm diameter or is twined by 2-5 bar lametta and to compile the shuffling metal wire that forms.
8, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1, it is characterized in that: make up employed macromolecular fibre of above-mentioned braid or metal wire, its whole bar numbers are the 10-80 bar.
9, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1, it is characterized in that: above-mentioned braid be the active tunic of the tubulose that on braider, will prepare as core, outsidely make up braid at it with macromolecular fibre metal wire or macromolecular fibre and metal wire.
10, a kind of doughnut according to claim 1 is inner injects special-purpose hollow-fibre membrane, it is characterized in that: above-mentioned metal wire be before making up in advance and macromolecular fibre twine and weave into wall scroll and make up line or only twine and weave into wall scroll and make up line by metal wire.
11, a kind of doughnut according to claim 10 is inner injects special-purpose hollow-fibre membrane, it is characterized in that: only twine the wall scroll of weaving into by metal wire and make up the thickness of line and make up the line thickness greater than twining the wall scroll of weaving into macromolecular fibre.
12, according to claim 1 or the special-purpose hollow-fibre membrane of the inner injection of 11 described a kind of doughnuts, it is characterized in that: in above-mentioned macromolecular fibre and the metal wire shuffling braid, metal wire number or the metal wire number that mixes with macromolecular fibre account for the 5-30% that all makes up number of lines.
13, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 12 is characterized in that: in above-mentioned braid, keep equidistantly between each metal wire and the adjacent wires.
14, the special-purpose hollow-fibre membrane of the inner injection of a kind of doughnut according to claim 1, it is characterized in that: above-mentioned active tunic is NF membrane (nanofiltration membrane), reverse osmosis membrane (reverse osmosismembrane), vapor permeable membrane (vapor permeation membrane), infiltrating and vaporizing membrane (pervaporationmembrane) or gas separation membrane (gas separation membrane).
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| JP2008154323A JP2009297642A (en) | 2008-06-12 | 2008-06-12 | Hollow fiber membrane for charge into hollow fiber |
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| CN105873668A (en) * | 2013-12-31 | 2016-08-17 | 可隆工业株式会社 | Composite hollow fiber membrane and method for manufacturing same |
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| AU2011302393B2 (en) * | 2010-09-15 | 2016-09-08 | Bl Technologies, Inc. | Method to make a yarn-reinforced hollow fibre membranes around a soluble core |
| KR101755197B1 (en) | 2011-06-21 | 2017-07-07 | 코오롱인더스트리 주식회사 | Positive Pressure Type Hollow Fiber Membrane Module |
| CN102674542B (en) * | 2012-05-30 | 2013-06-12 | 北京碧水源膜科技有限公司 | Charged membrane device for water processing and usage method of device |
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| US10962816B2 (en) * | 2017-06-16 | 2021-03-30 | E Ink Corporation | Flexible color-changing fibers and fabrics |
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| JPH08131797A (en) * | 1994-11-11 | 1996-05-28 | Sumitomo Electric Ind Ltd | Tubular compound and tubular porous film module |
| JPH1122869A (en) * | 1997-07-03 | 1999-01-26 | Nichirin:Kk | Resin hose for calorifier and resin hose assembly for calorifier |
| JP2000018443A (en) * | 1998-07-01 | 2000-01-18 | Bridgestone Corp | Hose |
| JP4890015B2 (en) * | 2005-12-08 | 2012-03-07 | 株式会社クラベ | Hose and method for manufacturing hose |
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2009
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102198372A (en) * | 2010-03-25 | 2011-09-28 | 吕晓龙 | Separating membrane and preparation method thereof |
| CN105873668A (en) * | 2013-12-31 | 2016-08-17 | 可隆工业株式会社 | Composite hollow fiber membrane and method for manufacturing same |
| CN105873668B (en) * | 2013-12-31 | 2017-10-20 | 可隆工业株式会社 | Composite hollow fiber membrane and its manufacture method |
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| JP2009297642A (en) | 2009-12-24 |
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