CN217773798U - High-pressure nanofiltration membrane element with high-power concentration - Google Patents
High-pressure nanofiltration membrane element with high-power concentration Download PDFInfo
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- CN217773798U CN217773798U CN202221803322.6U CN202221803322U CN217773798U CN 217773798 U CN217773798 U CN 217773798U CN 202221803322 U CN202221803322 U CN 202221803322U CN 217773798 U CN217773798 U CN 217773798U
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- nanofiltration membrane
- pressure
- water inlet
- concentration
- membrane element
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- 239000012528 membrane Substances 0.000 title claims abstract description 101
- 238000001728 nano-filtration Methods 0.000 title claims abstract description 76
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 46
- 239000004744 fabric Substances 0.000 claims abstract description 26
- 238000007789 sealing Methods 0.000 claims description 11
- 239000012466 permeate Substances 0.000 claims description 9
- 239000007788 liquid Substances 0.000 claims description 8
- 239000012141 concentrate Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 abstract description 13
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 150000003839 salts Chemical class 0.000 abstract description 5
- 239000012530 fluid Substances 0.000 abstract description 2
- 229910017053 inorganic salt Inorganic materials 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001223 reverse osmosis Methods 0.000 description 2
- 238000000108 ultra-filtration Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000003384 small molecules Chemical class 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
Abstract
The application discloses a high-concentration high-pressure nanofiltration membrane element, which comprises a central tube; a plurality of water inlets have been seted up to equidistant on the center tube lateral wall, and the water inlet outside cover is equipped with the shell. A plurality of membrane bags are formed by the first nanofiltration membrane with excellent high pressure resistance, pollution resistance and compression resistance and the high-density high-pressure-resistant water production flow channel cloth, a grid structure is optimized, the water inlet pressure can be improved along with the increase of the concentration of concentrated water in the concentration and separation process, so that the concentration and separation can be continuously carried out, the operation can be carried out at the highest pressure of 80bar, the concentration efficiency is high, the subsequent process is greatly simplified, the pollution resistance and separation characteristic is combined with the high-pressure structure, the high-power concentration and high-pressure resistance of the membrane module are realized, the high-power concentration high-pressure nanofiltration membrane element has high salt separation selectivity to carry out fractional separation on inorganic salt, monovalent salt and divalent salt in a separation fluid can be selected, and the operation can be carried out at the pressure as high as 80 bar.
Description
Technical Field
The application relates to a high-pressure nanofiltration membrane element, in particular to a high-pressure nanofiltration membrane element with high-power concentration.
Background
The nanofiltration membrane is a novel membrane separation technology between ultrafiltration and reverse osmosis, the operating pressure range of the nanofiltration membrane is 0.2-1.0MPa, the molecular weight cut-off of the membrane is 200-2000, and compared with the ultrafiltration membrane and reverse osmosis membrane, the nanofiltration membrane still has high water flux and high cut-off rate under lower operating pressure, and particularly has high cut-off rate on bivalent ions and low molecular weight organic small molecules, so that the nanofiltration membrane is gradually and widely applied to the fields of water treatment, medicine, food, biology and the like.
With the wide application of nanofiltration technology, the pressure resistance of the nanofiltration membrane element directly influences the concentration efficiency of the membrane component, and the prior nanofiltration membrane component has generally low operating pressure, can not operate under high pressure, has low concentration ratio and can not be applied in the field of high-concentration. Therefore, a high-pressure nanofiltration membrane element with high concentration power is provided for solving the problems.
Disclosure of Invention
The embodiment provides a high-power concentration high-pressure nanofiltration membrane element, which is used for solving the problems that the high-pressure nanofiltration membrane element in the prior art is generally low in operating pressure, cannot run under a high-pressure condition, is low in concentration rate and cannot be applied to the field of high-power concentration.
According to one aspect of the present application, there is provided a high-pressure nanofiltration membrane element for high power concentration, comprising a central tube; the utility model discloses a filter core, including center tube, shell, first net of straining, first net of straining is fixed with the first net of straining, and the first net of straining is fixed with first net of straining on the center tube lateral wall equidistance, and the cover is equipped with the shell outside the inlet opening, be fixed with first net of intaking on the shell inner wall, and first net of intaking inside is fixed with first nanofiltration membrane, first nanofiltration membrane inboard is fixed with runner cloth, runner cloth inboard is fixed with the second and is strained the membrane, and the second is strained the inside net of intaking that is fixed with of membrane, the shell front and back end all is fixed with the end cover, end cover central point puts the department and seted up with the permeate liquid delivery port, and the inside concentrate delivery port that has all seted up of end cover in the permeate liquid delivery port outside.
Furthermore, a plurality of first nanofiltration membranes, flow channel cloth and second nanofiltration membranes are arranged on the inner side of the first water inlet grid, and a second water inlet grid is fixed among the first nanofiltration membranes, the flow channel cloth and the second nanofiltration membranes in each group.
Furthermore, the thicknesses of the first water inlet grid, the first nanofiltration membrane, the flow channel cloth, the second nanofiltration membrane and the second water inlet grid are equal.
Further, the widths of the first water inlet grid, the first nanofiltration membrane, the flow passage cloth, the second nanofiltration membrane and the second water inlet grid are all equal to the width of the central pipe.
Furthermore, the water inlet holes are uniformly distributed on the periphery of the pipe wall of the central pipe and are communicated with the inner cavity of the central pipe.
Furthermore, a sealing ring is fixed on the outer side of each end cover, and the width of each sealing ring is equal to that of each end cover.
According to the embodiment of the application, the element consisting of the central tube, the high-pressure-resistant membrane, the high-pressure-resistant flow channel cloth, the shell, the end cover and the sealing ring is adopted, the membrane bag formed by the high-pressure-resistant membrane and the flow channel cloth can be rolled into the membrane element to run under high pressure, the performance of the membrane element is stable, the highest running pressure can reach 80bar, and the problems that the existing high-pressure nanofiltration membrane element is generally low in operating pressure, cannot run under a high-pressure condition, low in concentration rate and cannot be applied to the high-concentration field are solved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a schematic perspective view of an embodiment of the present application;
fig. 2 is a schematic perspective view of the structure of a center tube 1 according to an embodiment of the present application;
FIG. 3 is a schematic cross-sectional side view of an embodiment of the present application.
In the figure: 1. a central tube; 2. a water inlet hole; 3. a housing; 4. a first water inlet grid; 5. a first nanofiltration membrane; 6. distributing flow channels; 7. a second nanofiltration membrane; 8. a second water inlet grid; 9. a permeate outlet; 10. a concentrated solution outlet; 11. an end cap; 12. and (5) sealing rings.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the accompanying drawings are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances in order to facilitate the description of the embodiments of the application herein. Moreover, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1-3, a high-pressure nanofiltration membrane element for high-power concentration comprises a central tube 1; a plurality of water inlets 2 are equidistantly formed in the side wall of the central tube 1, a shell 3 is sleeved outside the water inlets 2, a first water inlet grid 4 is fixed on the inner wall of the shell 3, a first nanofiltration membrane 5 is fixed inside the first water inlet grid 4, a flow channel cloth 6 is fixed inside the first nanofiltration membrane 5, a second nanofiltration membrane 7 is fixed inside the flow channel cloth 6, a second water inlet grid 8 is fixed inside the second nanofiltration membrane 7, end covers 11 are fixed at the front end and the rear end of the shell 3, a permeate outlet 9 is formed in the center of each end cover 11, a concentrate outlet 10 is formed inside each end cover 11 outside the permeate outlet 9, the pollution-resistant separation characteristic of the membrane element is combined with a high-pressure structure, the concentration of the concentrate can be greatly improved, and the investment and operation cost can be greatly reduced in the heat treatment process of zero-release or near-release projects.
A plurality of first nanofiltration membranes 5, flow channel cloth 6 and second nanofiltration membranes 7 are arranged on the inner side of the first water inlet grid 4, a second water inlet grid 8 is fixed among each group of the first nanofiltration membranes 5, the flow channel cloth 6 and the second nanofiltration membranes 7, the first nanofiltration membranes 5, the flow channel cloth 6 and the second nanofiltration membranes 7 are matched to form membrane bags, and then the membrane elements are rolled to be capable of running under high pressure, so that the stability of the elements in use is improved; the thicknesses of the first water inlet grid 4, the first nanofiltration membrane 5, the flow channel cloth 6, the second nanofiltration membrane 7 and the second water inlet grid 8 are equal, so that the thickness of each membrane bag group is ensured; the widths of the first water inlet grid 4, the first nanofiltration membrane 5, the flow channel cloth 6, the second nanofiltration membrane 7 and the second water inlet grid 8 are all equal to the width of the central pipe 1, so that membrane bags formed by the first nanofiltration membrane 5, the flow channel cloth 6 and the second nanofiltration membrane 7 can bear water inlet pressure, and the membrane bags formed in each group are conveniently separated through the second water inlet grid 8; the water inlet holes 2 are uniformly distributed on the periphery of the pipe wall of the central pipe 1 and are communicated with the inner cavity of the central pipe 1, so that the permeation liquid can flow out conveniently; and a sealing ring 12 is fixed on the outer side of each end cover 11, the width of each sealing ring 12 is equal to that of each end cover 11, and the sealing performance of the joint is ensured by the sealing rings 12 when the end covers 11 are connected.
This application is when using, when high pressure nanofiltration membrane element is when normal use, every first nanofiltration membrane 5, runner cloth 6 and second nanofiltration membrane 7 form the membrane bag, it forms the dense water runner to have one deck second net 8 of intaking between every adjacent membrane bag, then produce water cloth with membrane bag opening one side and twine on center tube 1 along the center tube axial, a plurality of inlet openings 2 have been seted up on the pipe wall of center tube 1, inlet opening 2 evenly distributed is around the pipe wall of center tube 1 and communicate with the inner chamber of center tube 1, permeate liquid is derived through center tube 1, outer surrounding is high pressure resistant glass steel shell, two end covers are fixed at the both ends of center tube, the inside evenly distributed a plurality of grids of end cover, the outside is equipped with Y type dense water seal, 12, dense water flows from the grid clearance through the net, then twine on center tube 1 along the axial of center tube 1, inlet opening 2 evenly distributed on the pipe wall of center tube 1 is around the pipe wall of center tube 1 and communicates with the inner chamber of center tube, permeate liquid passes through permeate liquid 9 in center tube 1, concentrate flow path derives from the concentrate 10 outflow of sealing washer 12 side through the water runner.
The application has the advantages that:
1. the method is simple to operate, a plurality of membrane bags are formed by the first nanofiltration membrane 5 with excellent high pressure resistance, pollution resistance and pressure tightness resistance and the high-density high-pressure-resistance water production flow channel cloth 6, the grid structure is optimized, the water inlet pressure can be increased along with the increase of the concentration of concentrated water in the concentration and separation process, so that the concentration and separation can be continuously carried out, the operation can be carried out at the highest pressure of 80bar, the concentration efficiency is high, the subsequent process is greatly simplified, and the pollution resistance and separation characteristics are combined with the high-pressure structure, so that the high-power concentration and high-pressure resistance of the membrane module are realized;
2. the high-concentration high-pressure nanofiltration membrane element has the advantages that the structure is reasonable, the high-concentration high-pressure nanofiltration membrane element has high salt separation selectivity to carry out stage separation on inorganic salt, monovalent and divalent salts in separated fluid can be selected, and the operation can be carried out under the pressure of 80 bar.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (6)
1. A high-pressure nanofiltration membrane element with high-power concentration is characterized in that: comprising a central tube (1); a plurality of inlet openings (2) have been seted up equidistantly on center tube (1) lateral wall, and inlet opening (2) outside cover is equipped with shell (3), be fixed with first net (4) of intaking on shell (3) inner wall, and first net (4) of intaking inside is fixed with first nanofiltration membrane (5), first nanofiltration membrane (5) inboard is fixed with runner cloth (6), runner cloth (6) inboard is fixed with second nanofiltration membrane (7), and second nanofiltration membrane (7) inside is fixed with second net (8) of intaking, shell (3) front and back end all is fixed with end cover (11), end cover (11) central point department of putting has seted up and has permeated liquid delivery port (9), and permeate liquid delivery port (9) outside end cover (11) inside has all seted up concentrate delivery port (10).
2. The high-pressure nanofiltration membrane element of claim 1, wherein the high-pressure nanofiltration membrane element comprises: the inner side of the first water inlet grid (4) is provided with a plurality of first nanofiltration membranes (5), flow channel cloth (6) and second nanofiltration membranes (7), and a second water inlet grid (8) is fixed among the first nanofiltration membranes (5), the flow channel cloth (6) and the second nanofiltration membranes (7).
3. The high-pressure nanofiltration membrane element of claim 1, wherein the high-pressure nanofiltration membrane element comprises: the thicknesses of the first water inlet grid (4), the first nanofiltration membrane (5), the flow channel cloth (6), the second nanofiltration membrane (7) and the second water inlet grid (8) are equal.
4. The high-pressure nanofiltration membrane element of claim 1, wherein the membrane is characterized in that: the widths of the first water inlet grid (4), the first nanofiltration membrane (5), the flow channel cloth (6), the second nanofiltration membrane (7) and the second water inlet grid (8) are all equal to the width of the central pipe (1).
5. The high-pressure nanofiltration membrane element of claim 1, wherein the high-pressure nanofiltration membrane element comprises: the water inlet holes (2) are uniformly distributed on the periphery of the pipe wall of the central pipe (1) and are communicated with the inner cavity of the central pipe (1).
6. The high-pressure nanofiltration membrane element of claim 1, wherein the high-pressure nanofiltration membrane element comprises: and a sealing ring (12) is fixed on the outer side of each end cover (11), and the width of each sealing ring (12) is equal to that of each end cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221803322.6U CN217773798U (en) | 2022-07-14 | 2022-07-14 | High-pressure nanofiltration membrane element with high-power concentration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221803322.6U CN217773798U (en) | 2022-07-14 | 2022-07-14 | High-pressure nanofiltration membrane element with high-power concentration |
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| Publication Number | Publication Date |
|---|---|
| CN217773798U true CN217773798U (en) | 2022-11-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221803322.6U Active CN217773798U (en) | 2022-07-14 | 2022-07-14 | High-pressure nanofiltration membrane element with high-power concentration |
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| Country | Link |
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| CN (1) | CN217773798U (en) |
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- 2022-07-14 CN CN202221803322.6U patent/CN217773798U/en active Active
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| CP03 | Change of name, title or address |
Address after: 725000 Factory Building 6 #, New Material Recycling Industrial Park, High tech Industrial Development Zone, Ankang City, Shaanxi Province Patentee after: Shaanxi dingche Film Technology Co.,Ltd. Country or region after: China Address before: 725000 room 901, floor 9, building 3b, poverty alleviation space, Ankang high tech Industrial Development Zone, Shaanxi Province Patentee before: Shaanxi dingche Film Technology Co.,Ltd. Country or region before: China |
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