CN210495828U - Fin type gas separation membrane assembly - Google Patents
Fin type gas separation membrane assembly Download PDFInfo
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- CN210495828U CN210495828U CN201921033271.1U CN201921033271U CN210495828U CN 210495828 U CN210495828 U CN 210495828U CN 201921033271 U CN201921033271 U CN 201921033271U CN 210495828 U CN210495828 U CN 210495828U
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- membrane
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- collecting pipe
- bag
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Abstract
The utility model relates to a embrane method gas separation technical field especially relates to a fin formula gas separation membrane module. The utility model discloses a: permeate gas outlet pipe interface, membrane bag and permeate gas collecting pipe; the permeate gas collecting pipe is a hollow tubular structure, two ends of the permeate gas collecting pipe are open or one end of the permeate gas collecting pipe is open, and the open port part is connected with a permeate gas leading-out pipe interface; the pipe wall of the permeating gas collecting pipe is uniformly provided with a plurality of slender slits for installing the membrane bags; the membrane bag is a bag-packed structure with three closed edges and one open edge, which is formed by folding two rectangular flat membranes or a rectangular membrane; the open edge is inserted into the slit, and the outer part of the film bag and the inner wall of the slit are tightly sealed by adhesive; no flow guide net or other separator is arranged between the membrane bags. The technical scheme of the utility model the water conservancy diversion net among the prior art and division board itself can produce the resistance to the air current, and gaseous membrane separation process is with membrane both sides gas partial pressure difference as the driving force, and the circulation resistance will lead to operating pressure difference to reduce, influences the problem of membrane separation effect.
Description
Technical Field
The utility model relates to a embrane method gas separation technical field especially relates to a fin formula gas separation membrane module.
Background
Compared with the traditional cryogenic rectification and pressure swing adsorption separation technologies, the membrane method gas separation technology has the advantages of investment saving, high efficiency, small equipment size, simplicity and convenience in operation, normal-temperature work, low operation cost and the like, and is more and more widely applied in recent years.
The membrane commonly used for gas separation is divided into a flat membrane and a hollow fiber membrane according to the shape, and compared with the hollow fiber membrane, the flat membrane has simple structure and low production cost and is widely applied in the fields of air separation, oil gas recovery, Volatile Organic Compounds (VOCs) recovery and treatment and the like. The membrane modules of the above-mentioned structures have a common characteristic that membrane sheets are made into individual membrane bags, and a plurality of membrane bags are rolled on a central tube or stacked on a central tube penetrating through the membrane bags. In order to prevent the close fit between the membranes from obstructing the airflow, flow guide nets or separation plates are arranged between the membrane bags and in the membrane bags, so that the membrane bag has the functions of supporting and providing a flow passage for the circulation of the raw material gas and the permeation gas. Plate and frame membrane modules are rarely used due to their complex structure and small membrane packing area per unit volume. For the roll-type membrane, flow guide nets are arranged between membrane bags and in the membrane bags, and the air permeating in the membrane bags is longer when flowing into a central tube flow passage; for the stacked membrane, although the permeation flow channel in the membrane bag is shorter, the separation plate between the membrane bags reduces the effective membrane area. The flow guide net and the partition board generate resistance to airflow, and the gas membrane separation process takes the gas partial pressure difference on two sides of the membrane as a driving force, so that the working pressure difference is reduced due to the flow resistance, and the membrane separation effect is influenced. In addition, the effective membrane area is reduced due to the joint parts of the flow guide net, the partition plate and the membrane. The negative influence of the above factors on the membrane separation performance is particularly obvious under the working conditions of low pressure of raw material gas or negative pressure of permeation measurement and pumping. Taking membrane-process oxygen enrichment as an example, the pressure of raw materials is 10-50KPa, the pressure of permeated gas is 90-30KPa, even if 10KPa resistance drops on two sides, the driving force of oxygen permeating the membrane will be reduced by 15-50%, and the area loss of the effective membrane will seriously affect the oxygen enrichment concentration and the gas production rate of the membrane module.
In view of the problems in the prior art, it is necessary to design a novel finned gas separation membrane module to overcome the problems in the prior art.
Disclosure of Invention
According to the technical problems that the flow guide net and the partition plate provided by the prior art generate resistance to airflow, the gas membrane separation process takes the gas partial pressure difference on two sides of the membrane as a driving force, the working pressure difference is reduced due to the flow resistance, and the membrane separation effect is influenced, the finned gas separation membrane component is provided, the flow resistance of raw material gas and permeation gas is effectively reduced, the pressure difference loss on two sides of the membrane and the effective membrane area loss are reduced as much as possible, and the membrane component performance is exerted to the maximum.
The utility model discloses a technical means as follows:
a finned gas separation membrane module comprising: permeate gas outlet pipe interface, membrane bag and permeate gas collecting pipe; the membrane bags are uniformly distributed outside the permeation gas collecting pipe, and both ends of the permeation gas collecting pipe are respectively provided with a permeation gas leading-out pipe interface or only one end of the permeation gas collecting pipe is provided with a permeation gas leading-out pipe interface; the permeate gas collecting pipe is a hollow tubular structure, two ends of the permeate gas collecting pipe are open or one end of the permeate gas collecting pipe is open, and the open port part is connected with a permeate gas leading-out pipe interface; the pipe wall of the permeating gas collecting pipe is uniformly provided with a plurality of slender slits for installing the membrane bags; the membrane bag is a bag-packed structure with three closed edges and one open edge, which is formed by folding two rectangular flat membranes or a rectangular membrane; the open edge is inserted into the slit, and the outer part of the film bag and the inner wall of the slit are tightly sealed by adhesive; no flow guide net or other separator is set between the film bags, and the film bags maintain their interval via their rigidity.
Further, the permeate header has a hollow tubular structure with a circular, rectangular, or other shape in cross-section.
Further, the length of the opening edge of the film bag is equal to the length of the seam of the slit.
Further, a flow guide net is arranged inside the film bag.
Further, the slit is a linear or wavy slit.
Further, the slits are arranged in parallel in the axial direction or spirally arranged in the axial direction.
Compared with the prior art, the utility model has the advantages of it is following:
1. the fin type gas separation membrane component provided by the utility model has simple and reliable structure and is convenient to manufacture;
2. the fin type gas separation membrane component provided by the utility model is not provided with a flow guide net between membrane bags, the flow resistance loss of the raw material gas is minimum, and the area loss of the effective membrane is minimum;
3. the finned gas separation membrane module provided by the utility model has short membrane bag permeation gas flow passage, can be set as required, and limits the permeation gas flow resistance within an allowable range;
4. the permeation gas collecting pipe of the finned gas separation membrane component provided by the utility model can provide strength support and installation positioning for the membrane component, and can be conveniently arranged into a membrane separator shell for use in practical application, thus being convenient for assembly, disassembly and replacement;
5. the finned gas separation membrane module provided by the utility model has the advantages that under the low-pressure operation condition that the fan is used as the raw material gas power, the processing capacity of the unit membrane area of the finned membrane module can be improved by more than 15 percent compared with the spiral-wound membrane module; compared with a laminated membrane, the effective membrane area is improved by more than 10 percent;
6. the utility model provides a fin formula gas separation membrane module does not have the hindrance of water conservancy diversion net between the membrane bag, makes particulate matters such as dust in the air be difficult to gather and block up to alleviate membrane pollution, prolong membrane life
7. The finned gas separation membrane module provided by the utility model has the advantages that the membrane bags are not in direct contact, so that the membrane damage or the service life shortening caused by the friction between the membrane bags can be effectively avoided;
8. the fin type gas separation membrane assembly provided by the utility model has strong environmental adaptability, and can normally work under the environment with the temperature of-50 ℃ to 50 ℃, the humidity of 0-100% and heavy haze.
To sum up, use the technical scheme of the utility model the water conservancy diversion net that prior art provided and division board itself can produce the resistance to the air current, and gaseous membrane separation process is with membrane both sides gas partial pressure difference as the driving force, and the circulation resistance will lead to operating pressure difference to reduce, influences the problem of membrane separation effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.
FIG. 1 is a perspective view of a permeate collection tube of the present invention having a circular tube structure;
FIG. 2 is a front view of FIG. 1;
FIG. 3 is a view A-A of FIG. 2;
FIG. 4 is an enlarged view of section B of FIG. 3;
FIG. 5 is a schematic view of a circular permeate collection tube configuration;
FIG. 6 is a perspective view of a permeate collection tube of the present invention having a square configuration;
FIG. 7 is a schematic view of a permeate header having slits that are spirally sloped upward;
FIG. 8 is a schematic view of a permeate header having a wavy slit.
In the figure: 1. permeate gas outlet pipe interface 2, membrane bag 3, permeate gas collection pipe 4, slit 5, and flow guide net.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in the figure, the utility model provides a fin formula gas separation membrane module includes: a permeate gas outlet pipe interface 1, a membrane bag 2 and a permeate gas collecting pipe 3; a plurality of membrane bags 2 are uniformly distributed outside the permeate gas collecting pipe 3, and both ends of the permeate gas collecting pipe 3 are respectively provided with a permeate gas leading-out pipe interface or only one end is provided with a permeate gas leading-out pipe interface 1; the permeate gas collecting pipe 3 is a hollow tubular structure, two ends of the permeate gas collecting pipe are open or one end of the permeate gas collecting pipe is open, and an open port part is connected with a permeate gas eduction pipe interface 1; a plurality of slender slits 4 for installing the membrane bags 2 are uniformly distributed on the tube wall of the permeate gas collecting tube 3; the membrane bag 2 is a bag-shaped structure which is formed by folding two rectangular flat membranes or a rectangular membrane and has three sealed edges and one open edge; the open edge is inserted into the slit 4, and the outer part of the film bag 2 and the inner wall of the slit 4 are tightly sealed by adhesive; no separator such as a flow guide net is arranged between the membrane bags 2, and the gaps between the membrane bags are kept by the rigidity of the membrane bags.
The length of the open side of the film bag 2 is equal to the length of the slit 4.
The inside of the membrane bag 2 is provided with a flow guide net 5.
The slit 4 is a linear or wavy slit.
The slits 4 are arranged in parallel in the axial direction or spirally in the axial direction.
Example 1
As shown in fig. 1-5, the present invention provides a permeate collection tube 3 which is a circular tube, the wall of the tube is provided with a plurality of linear slits which are parallel to the axis and are uniformly distributed, and the membrane bags are arranged in a radial shape like the fins extending from the slits on the wall of the tube. The raw material gas is pushed by a fan (or a compressor and a gas pump) to flow through the membrane module from the gap between the membrane bag 2 and the membrane bag 2 along the axial direction of the permeation gas collecting pipe 3, the pressure of the raw material gas (outside the membrane bag) is higher than the pressure in the membrane bag, the gas permeates to the low-pressure side (inside the membrane bag) by taking the pressure difference between the inside and the outside of the membrane bag as a driving force, the gas permeating through the membrane enters each membrane bag and is collected in the permeation gas collecting pipe, the permeation gas leading-out pipe 1 is connected with a vacuum pump to lead out the permeation gas, the gas which does not permeate through the membrane is discharged from the other end of the membrane bag, the gas with the higher permeation rate is enriched in the permeation. Taking air as an example, oxygen with a faster permeation rate is enriched in the permeate header and nitrogen with a slower permeation rate is enriched in the feed side vent. The permeate gas outlet tubes 1 may be disposed at both ends of the permeate gas header 3, or may be disposed at only one end, may be led out along an axis, or may be led out from a sidewall.
Example 2
As shown in fig. 6, (based on example 1), the present invention further provides a permeate collection tube 3 which is a square tube, wherein a side wall (or two opposite sides) of the square tube is symmetrically distributed and is provided with a plurality of linear slits which are uniformly distributed and are parallel to each other along the length direction, and the film bags are distributed in parallel like fins extending from the slits on the tube wall. The specific working principle is the same as that of embodiment 1.
Example 3
As shown in fig. 7, (based on example 1), the membrane module structure is similar to example 1, but the slits of the permeate gas collecting tube are not parallel to the axis, but are spiral lines along the tube wall, and the corresponding membrane bags are also spiral fin-shaped, so that the feed gas forms turbulence to improve the gas flow distribution when the feed gas flows through the module, the membrane separation performance is more fully exerted, and the rigidity of the membrane bags can be improved.
Example 4
As shown in fig. 8, (based on example 1) the membrane module has a structure similar to that of example 2, but the slits of the permeate gas collecting tube are not straight lines, but wavy lines along the length direction of the tube wall, and the corresponding membrane bags are also wavy fin-shaped, so that the feed gas is turbulent to improve the gas flow distribution when the feed gas flows through the module, thereby more fully exerting the membrane separation performance and simultaneously improving the rigidity of the membrane bags.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. A finned gas separation membrane module, characterized in that, the finned gas separation membrane module includes: the permeate gas outlet pipe interface (1), the membrane bag (2) and the permeate gas collecting pipe (3); a plurality of membrane bags (2) are uniformly distributed outside the permeation gas collecting pipe (3), and both ends of the permeation gas collecting pipe (3) are respectively provided with a permeation gas leading-out pipe interface or only one end is provided with a permeation gas leading-out pipe interface (1);
the permeate gas collecting pipe (3) is a hollow tubular structure, two ends of the permeate gas collecting pipe are open or one end of the permeate gas collecting pipe is open, and the open port part is connected with a permeate gas leading-out pipe interface (1); a plurality of slender slits (4) for installing the membrane bags (2) are uniformly distributed on the pipe wall of the permeate gas collecting pipe (3);
the membrane bag (2) is a bag-shaped structure which is formed by folding two rectangular flat membranes or a rectangular membrane and has three closed edges and one open edge; the open edge is inserted into the slit (4), and the outer part of the film bag (2) and the inner wall of the slit (4) are tightly sealed by adhesive; no separator is arranged between the membrane bags (2), and the gaps between the membrane bags are kept by the rigidity of the membrane bags.
2. The finned gas separation membrane module of claim 1 wherein the permeate header (3) has a circular, rectangular hollow tubular configuration in cross-section.
3. The finned gas separation membrane module of claim 1, wherein the length of the open side of the membrane bag (2) is equal to the length of the slit (4).
4. The finned gas separation membrane module of claim 3, wherein the inside of the membrane bag (2) is provided with a flow guiding net (5).
5. The finned gas separation membrane module of claim 3, wherein the slits (4) are straight or wavy slits.
6. The finned gas separation membrane module of claim 5, wherein the slits (4) are arranged in parallel in the axial direction or are arranged spirally in the axial direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033271.1U CN210495828U (en) | 2019-07-02 | 2019-07-02 | Fin type gas separation membrane assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921033271.1U CN210495828U (en) | 2019-07-02 | 2019-07-02 | Fin type gas separation membrane assembly |
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| CN210495828U true CN210495828U (en) | 2020-05-12 |
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| CN201921033271.1U Expired - Fee Related CN210495828U (en) | 2019-07-02 | 2019-07-02 | Fin type gas separation membrane assembly |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180334A (en) * | 2019-07-02 | 2019-08-30 | 深圳市群峰科技开发有限公司 | Finned gas separation membrane module |
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2019
- 2019-07-02 CN CN201921033271.1U patent/CN210495828U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110180334A (en) * | 2019-07-02 | 2019-08-30 | 深圳市群峰科技开发有限公司 | Finned gas separation membrane module |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200512 Termination date: 20210702 |
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| CF01 | Termination of patent right due to non-payment of annual fee |