CN106178966A - A kind of reverse osmosis membrane salient point water inlet flow channel cloth and processing method thereof - Google Patents
A kind of reverse osmosis membrane salient point water inlet flow channel cloth and processing method thereof Download PDFInfo
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- CN106178966A CN106178966A CN201610620567.8A CN201610620567A CN106178966A CN 106178966 A CN106178966 A CN 106178966A CN 201610620567 A CN201610620567 A CN 201610620567A CN 106178966 A CN106178966 A CN 106178966A
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- water inlet
- flow channel
- fiber
- inlet flow
- reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/08—Prevention of membrane fouling or of concentration polarisation
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- Chemical Kinetics & Catalysis (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a kind of reverse osmosis membrane salient point water inlet flow channel cloth and processing method thereof, salient point water inlet flow channel cloth is to be intersected the fiber grid connected and composed by meridional fibers and parallel fiber, and the tow sides of described fiber grid interior joint are respectively equipped with protrusion particle.The reverse osmosis membrane salient point water inlet flow channel cloth of the present invention reduces radial fiber and the weft fiber resistance to former water, meeting turbulization at particle can protruded simultaneously, colloid and incrustation scale are difficult to deposit on film surface, thus extend and roll service life of reverse-osmosis membrane element, and make to roll reverse osmosis membrane and can adapt to the former water of more high salt concentration.
Description
Technical field
The invention belongs to reverse osmosis membrane separation technical field, be specifically related to a kind of reverse osmosis membrane water inlet flow channel cloth and processing thereof
Method.
Background technology
The water inlet flow channel cloth of conventional roll reverse-osmosis membrane element is latticed, and composition grid is radial direction and broadwise polypropylene
Fiber, but in terms of the cross section of its thickness direction, conventional water inlet flow channel cloth shape is Fig. 4 or Fig. 5, says as a example by Fig. 4
Bright, routine water inlet flow channel is laid in the plane, the fiber for broadwise vertical with sight line, fiber radially parallel with sight line and
Being bonded in uniformly on weft fiber, when rolling into membrane component, conventional water inlet flow channel cloth radial fiber and weft fiber all can
Be fitted in reverse osmosis membrane surface, carry out dissecting by the membrane component rolled with conventional water inlet flow channel cloth it finds that, conventional water inlet
Runner cloth can extrude a lot of oblique line, after conventional reverse osmosis processes the former water of a period of time high salt, table at reverse osmosis membrane surface
Face meeting scaling, carries out incrusted reverse osmosis membrane dissecting discovery, is fitted in radial fiber and the broadwise on reverse osmosis membrane surface
Fiber has certain facilitation to fouling, substantially reduces the service life of reverse-osmosis membrane element, and owing to fitting
Should the former water of more high salt concentration, limit the range of application of reverse-osmosis membrane element.
Summary of the invention
The present invention seeks to overcome the deficiencies in the prior art, it is provided that a kind of reverse osmosis membrane water inlet flow channel cloth and processing side thereof
Method, it can improve the defect of membrane superficial tissue, extend the service life of reverse osmosis membrane, and make reverse osmosis membrane adapt to more high salt
The former water of concentration.
First, the technical scheme of reverse osmosis membrane salient point water inlet flow channel cloth is given: it is by meridional fibers and parallel fiber phase
Hand over the fiber grid connected and composed, the tow sides of described fiber grid interior joint are respectively equipped with the convex of through-thickness extension
Go out particle.I.e. on the node of the fiber mesh of water inlet flow channel cloth, tow sides are provided with protrusion particle, roll into membrane component it
After, radial fiber and weft fiber are raised particle and make somebody a mere figurehead, and only protrude particle and reverse osmosis film contact, make former water running hinder
Power reduces, and former water is through protruding particle meeting turbulization, colloid and incrustation scale is gone out.And this salient point water inlet flow channel
The thickness that cloth protrudes at particle is identical with conventional water inlet flow channel cloth thickness, so will not increase the distance between film bag and film bag,
The reverse-osmosis membrane element using salient point water inlet flow channel cloth to roll into is identical with conventional reverse osmosis membrane component membrane area.
Further, described meridional fibers, parallel fiber and protrusion particle are polypropylene fibre.
Further, for intersecting vertically between described meridional fibers and parallel fiber；I.e. the two angle is 90 degree.
Further, the cross section of described meridional fibers and parallel fiber is circle.
Further, the outer surface of described protrusion particle is cambered surface；It is preferably half elliptic spheroid.
Further, at the thickness direction of described salient point water inlet flow channel cloth, it is positioned at fiber grid and protrudes the thickness at particle
It it is 3 times of fiber other segment thicknesses of grid；Such as protruding thickness at particle is the salient point water inlet flow channel cloth of 27 Mills, fiber lattice
A diameter of 9 Mills of network fiber (when fibre section is circular).
Secondly, the processing method of reverse osmosis membrane salient point water inlet flow channel cloth is: first meridional fibers and parallel fiber phase commissure
Connect composition fiber grid, be then pressed into protrusion by calendering extrusion molding operation at the position of intersecting point of radial fiber Yu weft fiber
Particle, thus obtain protruding uniform particle and be distributed in the salient point water inlet flow channel cloth on grid two sides.Calendering extrusion molding operation is the most logical
Cross mould (mould can be template or die, which is provided with the groove corresponding with grid structure and pit) by original fiber
The operation that grid is the most compressing, needing if desired to heat up softens fiber grid.
Further, a kind of specific operation process of calendering extrusion molding operation given below: described calendering extrusion molding
Operation uses a pair format roll positioned opposite, the temperature on described format roll surface can control and can driven rotate；Each
It is carved with the groove for forming grid on format roll, is distributed on described groove for forming the pit protruding particle, and institute
State the degree of depth degree of depth more than groove of pit；Two format rolls force together and groove thereon and pit are mutually aligned；Two
During format roll synchronous rotary driven, all will press with the radial fiber in the fiber grid of same line speed scroll and weft fiber
Become the grid fiber that cross section is consistent with two involutory shapes of format roll groove, respectively by the two sides of the node in fiber grid simultaneously
It is pressed into the protrusion particle consistent with corresponding format roll pit shape.
Further, described channel section is semicircle, and described pit cross section is half elliptic；The radial fiber i.e. formed
It is circle with the cross section of weft fiber, protrudes particle and be semielliptical spheroid.
Finally, it is provided that a kind of reverse-osmosis membrane element, including reverse osmosis diaphragm and be arranged between adjacent reverse osmosis diaphragm
Water inlet flow channel cloth, described water inlet flow channel cloth uses the salient point that above-mentioned salient point water inlet flow channel cloth or above-mentioned processing method obtain
Water inlet flow channel cloth.
The reverse osmosis membrane salient point water inlet flow channel cloth of the present invention reduces radial fiber and the weft fiber resistance to former water, with
Time can protrude at particle can turbulization, colloid and incrustation scale are difficult to deposit on film surface, thus extend and roll reverse osmosis membrane element
The service life of part, and make to roll reverse osmosis membrane and can adapt to the former water of more high salt concentration；Its may apply to domestic, commercial with
And in Industrial reverse osmosis membrane component, it is possible to realize promoting the use of on a large scale.
Accompanying drawing explanation
Fig. 1 is the structural representation of reverse osmosis membrane salient point water inlet flow channel cloth；
Fig. 2 is the generalized section of reverse osmosis membrane salient point water inlet flow channel cloth；
Fig. 3 is that reverse osmosis membrane salient point water inlet flow channel cloth rolls into the end face top view after membrane component；
Fig. 4 is the cross sectional representation of the first conventional water inlet flow channel cloth；
Fig. 5 is the cross sectional representation of the second routine water inlet flow channel cloth；
Fig. 6 is the groove being rolled on forming roll engraving；
Fig. 7 is the pit being rolled on forming roll engraving；
In figure: 1, protrude particle, 2, fiber grid, 3, centralized water pipe, 4, reverse osmosis membrane bag, 5, salient point water inlet flow channel cloth, 6,
Groove, 7, pit, 8, upper format roll, 9, lower forming roller.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described further, but not as a limitation of the invention.
Embodiment 1
Seeing Fig. 1-2, a kind of reverse osmosis membrane salient point water inlet flow channel cloth, meridional fibers and parallel fiber intersect vertically and connect and compose
Fiber grid 2, the tow sides of fiber grid 2 interior joint are respectively equipped with the protrusion particle 1 that through-thickness extends；Warp
Fiber, parallel fiber and protrusion particle are polypropylene fibre.
Embodiment 2
See Fig. 3, a kind of reverse-osmosis membrane element, be spaced, including centralized water pipe 3 and its periphery, the reverse osmosis membrane rolled successively
Bag 4, is supported by the salient point water inlet flow channel cloth 5 in embodiment 1 between adjacent reverse osmosis membrane bag (sheet) and separates, form former water and lead to
Road.
Embodiment 3
Seeing Fig. 6-7, the processing method of a kind of reverse osmosis membrane salient point water inlet flow channel cloth, its principle is: first meridional fibers and latitude
The crossing fiber grid (such as can be for the structure shown in Fig. 4 or Fig. 5) that connects and composes of line fiber, then uses die by pressure
Prolong extrusion molding operation and be pressed into protrusion particle at the position of intersecting point of radial fiber Yu weft fiber, thus obtain protruding uniform particle
It is distributed in the salient point water inlet flow channel cloth on grid two sides.Roll extrusion molding operation particularly as follows: use a pair format roll positioned opposite,
I.e. going up format roll 8 and lower forming roller 9, the temperature on each format roll surface can control and can driven rotate；Each molding
It is carved with the groove 6 for forming grid on roller, is distributed on groove 6 for forming the pit 7 protruding particle 1, and pit 7
The degree of depth is more than the degree of depth of groove 6；Upper format roll 8 and lower forming roller 9 force together and groove thereon 6 and pit 7 are mutually aligned；
During two format roll synchronous rotaries driven, by with the radial fiber in the fiber grid of same line speed scroll and weft fiber
All be pressed into the cross section grid fiber consistent with two involutory shapes of format roll groove (the present embodiment further groove cross section is semicircle,
The radial fiber i.e. formed and the cross section of weft fiber are circle) two sides of the node in fiber grid is pressed into respectively simultaneously
(the present embodiment pits cross section is half elliptic to the protrusion particle consistent with corresponding format roll pit shape, the protrusion i.e. formed
Particle is semielliptical spheroid).
The reverse-osmosis membrane element that after rolling into membrane component with salient point water inlet flow channel cloth, i.e. embodiment 2 obtains, anti-with routine
Permeable membrane device carries out performance comparison, and test content is flux decline degree and the pressure reduction of reverse osmosis membrane.Concrete outcome is shown in enforcement
Example 4 and 5.
Embodiment 4
Experiment condition: test and use membranous type JBW-8040, reverse osmosis diaphragm used by experiment film is identical with producing water flow passage cloth, conventional
Water inlet flow channel cloth rolls 8040 film one, and salient point water inlet flow channel cloth rolls 8040 film one；CaCl2、MgSO4, NaCl preparation molten
Liquid, hardness 200ppm, TDS value 5000ppm；Experimental temperature, with seasonal variations, keeps pressure 225psi before constant film, pretreatment system
System is PP cotton+activated carbon, within 72 hours, changes once, 20% response rate, does not clean continuous service, and antisludging agent is GE-MDC170, uses
Amount is 3.5ppm, runs 4 hours every day.
Experimental data is as follows:
Interpretation:
1. salient point water inlet flow channel cloth reverse osmosis membrane initial differential pressure is much smaller than conventional water inlet flow channel cloth reverse osmosis membrane, is only routine water inlet
The 60% of runner cloth pressure reduction, energy efficient；And after running the identical time, salient point water inlet flow channel cloth reverse osmosis membrane pressure reduction increases by 20%,
And routine water inlet flow channel cloth reverse osmosis membrane pressure reduction increases by 28%.
2. after running the identical time, salient point water inlet flow channel cloth reverse osmosis flux depression 10%, and conventional water inlet flow channel cloth is anti-
Infiltration flux depression 15%.
From above 2 it can be seen that the JBW-8040 model salient point water inlet flow channel cloth reverse osmosis membrane processing former water of high salinity
Time, initial differential pressure is low, and in running, pressure reduction down ratio is the lowest, greatly reduces energy consumption；Meanwhile, also than conventional feed water flow
Road cloth reverse osmosis membrane flux decline is slow, and service life is longer.
Embodiment 5
Experiment condition: test and use membranous type JRW-4021, reverse osmosis diaphragm used by experiment film is identical with producing water flow passage cloth, conventional
Water inlet flow channel cloth rolls 4021 film one, and salient point water inlet flow channel cloth rolls 4021 film one；CaCl2、MgSO4, NaCl preparation molten
Liquid, hardness 200ppm, TDS value 2000ppm；Experimental temperature, with seasonal variations, keeps pressure 140psi before constant film, pretreatment system
System is PP cotton+activated carbon, within 72 hours, changes once, 20% response rate, does not clean continuous service, and antisludging agent is GE-MDC170, uses
Amount is 3.5ppm, runs 4 hours every day.
Experimental data is as follows:
Interpretation:
1. salient point water inlet flow channel cloth reverse osmosis membrane initial differential pressure is much smaller than conventional water inlet flow channel cloth reverse osmosis membrane, is only routine water inlet
The 70% of runner cloth pressure reduction, energy efficient；After running the identical time, salient point water inlet flow channel cloth reverse osmosis membrane pressure reduction increases by 14.3%,
And routine water inlet flow channel cloth reverse osmosis membrane pressure reduction increases by 16%.
2. after running the identical time, salient point water inlet flow channel cloth reverse osmosis flux depression 12.5%, and conventional water inlet flow channel cloth
Reverse osmosis flux depression 16.7%.
From above 2 it can be seen that the JRW-4021 model salient point water inlet flow channel cloth reverse osmosis membrane processing former water of high salinity
Time, initial differential pressure is low, and in running, pressure reduction down ratio is low, reduces energy consumption；Meanwhile, also than conventional water inlet flow channel cloth reverse osmosis
Transmembrane flux decay is slow, and service life is longer.
Finding through too much group contrast experiment, experiment conclusion can repeat, and the resistance to of salient point water inlet flow channel cloth reverse osmosis membrane is described
Dirty stifled performance is better than conventional water inlet flow channel cloth reverse osmosis membrane, and service life is longer, and pressure reduction is lower, and energy consumption reduces.And this area
It will be appreciated by the skilled person that above example is only the exemplary embodiments of the present invention, without departing from or without departing from the present invention protect
In the case of protecting scope, technical solutions and their implementation methods of the present invention have multiple modification, improvement or equivalent variations, and these all should
Fall within the scope of protection of the present invention.
Claims (10)
1. a reverse osmosis membrane salient point water inlet flow channel cloth, is to be intersected the fiber lattice connected and composed by meridional fibers and parallel fiber
Net, it is characterised in that: it is respectively equipped with the protrusion particle that through-thickness extends on the tow sides of described fiber grid interior joint.
Reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 1, it is characterised in that: described meridional fibers, parallel
Fiber and protrusion particle are polypropylene fibre.
Reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 1, it is characterised in that: described meridional fibers and parallel
For intersecting vertically between fiber.
Reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 1, it is characterised in that: described meridional fibers and parallel
The cross section of fiber is circle.
Reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 1, it is characterised in that: the appearance of described protrusion particle
Face is cambered surface.
6. according to the arbitrary described reverse osmosis membrane salient point water inlet flow channel cloth of claim 1-4, it is characterised in that: enter at described salient point
The thickness direction of water flow passage cloth, being positioned at fiber grid and protruding the thickness at particle is 3 times of fiber other segment thicknesses of grid.
7. the processing method of the arbitrary described reverse osmosis membrane salient point water inlet flow channel cloth of claim 1-6, it is characterised in that: first warp
Fiber and the crossing fiber grid that connects and composes of parallel fiber, then fine with broadwise in radial fiber by calendering extrusion molding operation
The position of intersecting point of dimension is pressed into protrusion particle, thus obtains protruding uniform particle and be distributed in the salient point water inlet flow channel cloth on grid two sides.
The processing method of reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 7, it is characterised in that: described calendering is squeezed
Going out molding procedure uses a pair format roll positioned opposite, the temperature on described format roll surface can control and can driven revolve
Turn；It is carved with the groove for forming grid on each format roll, is distributed on described groove for forming the recessed of protrusion particle
Hole, and the degree of depth of described pit is more than the degree of depth of groove；Two format rolls force together and groove thereon and pit the most right
Together；During two format roll synchronous rotaries driven, by with the radial fiber in the fiber grid of same line speed scroll and broadwise
Fiber is all pressed into the grid fiber that cross section is consistent with two involutory shapes of format roll groove, simultaneously by the node in fiber grid
Two sides is pressed into the protrusion particle consistent with corresponding format roll pit shape respectively.
The processing method of reverse osmosis membrane salient point water inlet flow channel cloth the most according to claim 8, it is characterised in that: described groove cuts
Face is semicircle, and described pit cross section is half elliptic.
10. a reverse-osmosis membrane element, including reverse osmosis diaphragm and be arranged on the water inlet flow channel between adjacent reverse osmosis diaphragm
Cloth, it is characterised in that: described water inlet flow channel cloth uses the arbitrary described salient point water inlet flow channel cloth of claim 1-6 or right to want
Seek the salient point water inlet flow channel cloth that the arbitrary described processing method of 7-9 obtains.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610620567.8A CN106178966B (en) | 2016-07-30 | 2016-07-30 | A kind of reverse osmosis membrane salient point water inlet flow channel cloth and its processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610620567.8A CN106178966B (en) | 2016-07-30 | 2016-07-30 | A kind of reverse osmosis membrane salient point water inlet flow channel cloth and its processing method |
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| Publication Number | Publication Date |
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| CN106178966A true CN106178966A (en) | 2016-12-07 |
| CN106178966B CN106178966B (en) | 2019-02-22 |
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| CN201610620567.8A Active CN106178966B (en) | 2016-07-30 | 2016-07-30 | A kind of reverse osmosis membrane salient point water inlet flow channel cloth and its processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579430A (en) * | 2018-05-10 | 2018-09-28 | 天津大学 | The method for coiling of multilayer water inlet flow channel cloth and its novel reverse-osmosis membrane element of composition |
| CN113491952A (en) * | 2021-09-06 | 2021-10-12 | 山东九章膜技术有限公司 | Rolling process and device for multilayer composite gas separation membrane assembly |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6632357B1 (en) * | 1999-11-18 | 2003-10-14 | University Of South Florida | Reverse osmosis (“RO”) membrane system incorporating function of flow channel spacer |
| JP2011120971A (en) * | 2009-12-08 | 2011-06-23 | Toshiba Corp | Immersion type membrane cassette and immersion type membrane separator |
| CN205007860U (en) * | 2015-09-09 | 2016-02-03 | 韩佳（上海）环保设备有限公司 | Novel produce water cloth and filter core |
| CN105536538A (en) * | 2015-12-15 | 2016-05-04 | 珠海格力电器股份有限公司 | Separate net and formula of book filter core |
-
2016
- 2016-07-30 CN CN201610620567.8A patent/CN106178966B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6632357B1 (en) * | 1999-11-18 | 2003-10-14 | University Of South Florida | Reverse osmosis (“RO”) membrane system incorporating function of flow channel spacer |
| JP2011120971A (en) * | 2009-12-08 | 2011-06-23 | Toshiba Corp | Immersion type membrane cassette and immersion type membrane separator |
| CN205007860U (en) * | 2015-09-09 | 2016-02-03 | 韩佳（上海）环保设备有限公司 | Novel produce water cloth and filter core |
| CN105536538A (en) * | 2015-12-15 | 2016-05-04 | 珠海格力电器股份有限公司 | Separate net and formula of book filter core |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108579430A (en) * | 2018-05-10 | 2018-09-28 | 天津大学 | The method for coiling of multilayer water inlet flow channel cloth and its novel reverse-osmosis membrane element of composition |
| CN108579430B (en) * | 2018-05-10 | 2020-10-30 | 天津大学 | Multilayer water inlet flow passage cloth and rolling method of novel reverse osmosis membrane element formed by same |
| CN113491952A (en) * | 2021-09-06 | 2021-10-12 | 山东九章膜技术有限公司 | Rolling process and device for multilayer composite gas separation membrane assembly |
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| Publication number | Publication date |
|---|---|
| CN106178966B (en) | 2019-02-22 |
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Denomination of invention: A convex point inlet channel cloth of reverse osmosis membrane and its processing method Effective date of registration: 20220505 Granted publication date: 20190222 Pledgee: Bank of China Limited Dongying Kenli sub branch Pledgor: SHANDONG JOZZON MEMBRANE TECHNOLOGY CO.,LTD. Registration number: Y2022980005058 |
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