JP2002191943A - Separation membrane apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a separation membrane apparatus which can be maintained by dismantling and with excellent corrosion resistance, heat resistance and hermetic properties. SOLUTION: A separation membrane module 11 for the separation membrane apparatus is constituted of a pair of the first supporting plate 16 and the second supporting plate 20 forming a supporting member 15 and an elastic member 24 and filters 12 are inserted through each of through-holes 17, 25 and 21 of each of the first supporting plate 16, the elastic member 24 and the second supporting plate 20 to support them and the elastic member 24 is pressed by means of projected parts 19 and 23 provided on the first supporting plate 16 and the second supporting plate 21 to elastically deform it and hermetic sealing is performed by hermetically bringing it into hermetic contact with the outer peripheries of the filters 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filter having a separation membrane on at least one of the inner and outer peripheries of a porous cylindrical body and selectively permeating specific components in a fluid such as gas or liquid using a filter. The present invention relates to a separation membrane device used for separation.

[0002]

2. Description of the Related Art In recent years, in a manufacturing process of electronic parts and metal products as well as foods and pharmaceuticals, or a petroleum refining plant, a separation membrane device is used to selectively separate a specific component in a fluid. ing.

[0003] As shown in a schematic cross-sectional view of a general separation membrane device, a cylindrical casing 32 is provided with an inner peripheral surface of a porous cylindrical body, which is smaller than the pores of the porous cylindrical body. A separation membrane module 33 in which a plurality of filters 34 each having a separation membrane having pores are arranged in parallel in the longitudinal direction,
As shown by the arrow, when a fluid flows into the filter 34 from one end of the cylindrical casing 32, a specific component in the fluid is separated by the filter 34, and the fluid containing the remaining components passes through the outer periphery of the filter 34. And the cylindrical casing 32
From the other end.

In order to guide the fluid supplied from one end of the cylindrical casing 32 into the filter 34, it is necessary to hermetically seal the outer periphery of the filter 34, and to support a plurality of filters 34 in an airtight manner. Various structures have been proposed as means for performing this.

Japanese Unexamined Patent Application Publication No. 11-226370 discloses that, as shown in FIG. 5, a filter 34 is inserted into a through hole 42 provided in a support member 41 to support the filter 34.
A technique is disclosed in which the airtight seal 4 is hermetically sealed by joining the support member 4 to a support member 41 via a glass material 43.

[0006] JP-A-2000-126519 discloses that
As shown in FIG. 6, there is a technique in which a filter 34 is inserted into a through hole 52 provided in a support member 51 to support the filter 34, and the filter 34 is joined to the support member 51 via a synthetic resin 53 to hermetically seal the filter 34. It has been disclosed.

In Japanese Patent Publication No. 6-1370, as shown in FIG. 7, a filter 34 is inserted into a through hole 64 of a support member 61 composed of two support plates 62 and 63 to support the filter. A tapered portion 64a which expands outward is provided around the through hole of one support plate 63 constituting the member 61, and an O-ring 65 interposed in a space formed by the other support plate 62 is provided on the outer periphery of the filter 34. A technique for hermetically sealing by contacting with a substrate is disclosed.

[0008]

Problems to be Solved by the Invention
According to the technique disclosed in Japanese Patent Publication No. 70-70, since the glass material 43 is a brittle material, if the glass material 43 is hit during handling or is used in an environment where a large vibration is constantly applied, the inside of the glass material 43, the filter 34 and the support member When cracks are generated between the joining interface with the filter 41 and the airtightness is impaired, and the filter is used in an environment where heat is applied, stress due to a difference in thermal expansion between the filter 34 and the supporting member 41 causes the filter 3
There is also a problem that cracks are generated between the bonding interfaces with the support member 4 and the support member 41 and the airtightness is impaired.

When the filter 34 and the supporting member 41 are joined by the glass material 43, the filter 34 and the supporting member 41 are joined together.
The paste-like glass material 43 is applied in the gap between the glass material 43 and hardened, but it is very difficult to seal the glass material 43 uniformly without defects due to the variation due to the shrinkage of the glass material 43.

Further, according to the technique disclosed in Japanese Patent Application Laid-Open No. 11-226370, if the filter 34 is partially damaged or its performance is reduced, it is not possible to replace only that part. Had to be replaced.

In Japanese Patent Application Laid-Open No. 2000-126519, although the filter 34 and the support member 51 are superior in shock and vibration as compared with a case in which the filter 34 and the support member 51 are joined with a glass material,
Also in this technique, when the filter 34 is partially damaged or performance is deteriorated, or when the synthetic resin 53 is corroded by corrosive fluid, only that part cannot be replaced. Had to be replaced entirely, which was uneconomical.

On the other hand, in the technique disclosed in Japanese Patent Publication No. 6-11370, since the O-ring 65 is used for sealing between the filter 34 and the support member 61, it is resistant to heat and vibration, and Although the filter 34 can be partially replaced easily, the O-ring 65
Therefore, there is a problem that the number of filters 34 that can be disposed in the cylindrical casing 32 is small, and the separation efficiency of the separation membrane device cannot be increased.

According to the technique disclosed in Japanese Patent Publication No. 6-11370, when disassembling and assembling the separation membrane module 33 by maintenance or the like, the O-rings 65 must be inserted one by one for each filter 34. Therefore, it took time to assemble one separation membrane module 33, and workability was poor.

[0014]

SUMMARY OF THE INVENTION Accordingly, the present invention has been made in view of the above problems, and an invention according to claim 1 is directed to a separation membrane device having a separation membrane module provided inside a cylindrical casing.
The separation membrane module, a plurality of filters provided with a separation membrane on at least one surface of the inner and outer peripheries of the porous cylindrical body, an elastic member having a plurality of through holes through which each filter is inserted, The first support plate and / or the second support plate include a plurality of through holes into which the filters are respectively inserted, and a first support plate and a second support plate that constitute a support member that supports the plurality of filters. Protrusions are provided around the through holes of the second support plate, and the filters are inserted in the through holes of the first support plate, the elastic member, and the second support plate to support a plurality of filters in parallel. At the same time, an elastic member is sandwiched between the first support plate and the second support plate, and the elastic member is held by the protrusion of the first support plate and / or the second support plate. Pressure into close contact with the outer periphery of the filter by elastic deformation, characterized in that so as to seal hermetically.

According to a second aspect of the present invention, in a separation membrane device having a separation membrane module inside a cylindrical casing, the separation membrane module is provided at least on one of the inner and outer surfaces of a porous cylindrical body. A plurality of filters provided with a separation membrane, an elastic member having a plurality of through-holes through which each filter is inserted, and a plurality of through-holes through which each of the filters is inserted, and the plurality of A first support plate and a second support plate that constitute a support member for supporting the filter, a protrusion is provided around a through hole of the elastic member, and the first support plate, the elastic member, and the second support are provided. Each filter is inserted into each through hole of the plate to support the plurality of filters in parallel, and an elastic member is sandwiched between the first support plate and the second support plate. In addition, the protrusion of the elastic member is pressed against the first support plate and / or the second support plate so as to be elastically deformed, whereby the elastic member is brought into close contact with the outer periphery of the filter, and hermetically sealed. .

Further, the invention according to claim 3 is characterized in that the porous cylindrical body, the first support plate and the second support plate are formed of the same type of ceramic.

[0017]

Embodiments of the present invention will be described below.

FIG. 1 is a sectional view showing an example of a separation membrane device according to the present invention. This separation membrane device has a separation membrane module 11 installed in a cylindrical casing 2 having flanges 3 at both ends. The separation membrane module 11 includes a plurality of filters 12 each having a separation membrane 14 having pores smaller than the pores of the porous cylindrical body 13 on at least one of the inner and outer circumferences of the porous cylindrical body 13. A pair of support members 15, 15
Are supported in parallel. Reference numeral 35 denotes a rod for regulating the interval between the pair of support members 15, 15.

Further, a pair of fluid holes 4 and 4 are provided on the outer periphery of the cylindrical casing 2 and a plurality of holes 2a for bolt insertion are formed in the flange portion 3 at equal intervals. Is housed in the cylindrical casing 2 via a sealing member 7 such as an O-ring. A ring-shaped body 8 is screwed into the opening at both ends of the cylindrical casing 2 to prevent the sealing member 7 from coming off, and a lid 6 having a fluid hole 5 at the center in the opening of the cylindrical casing 2. And a bolt 9 is inserted through a plurality of bolt insertion holes 6a provided on the outer peripheral portion of the lid 6 and the bolt insertion hole 2a provided on the flange portion 3 of the cylindrical casing 2, and tightened with the nut 10. The lid 6 is joined to the cylindrical casing 2 by means of.

Then, for example, the fluid hole 5 provided in the lid 6
When the fluid is supplied to the filter 12 through the
4, a specific component in the fluid is separated from the fluid, and the remaining fluid from which the specific component has been separated is transmitted to the outer periphery of the filter 12 and taken out from the fluid holes 4 and 4 of the cylindrical casing 2. Fluid holes 4, 4 in cylindrical casing 2
When more fluid is supplied to the outer peripheral surface of the filter 12,
The specific component in the fluid is separated by the separation membrane 14, and the remaining fluid from which the specific component has been separated passes through the filter 12 and is taken out from the fluid hole 5 of the lid 6.

2 (a) to 2 (c) and 3 (a) to 3 (a).
(C) is a support member 15 which is a main part of various embodiments of the separation membrane module 11 of the separation membrane device according to the present invention.
FIG. 3 is a view showing a support structure of the filter 12 in FIG. Since the support structure of the filter 12 by the support member 15 is the same at both ends of the separation membrane module 11, only the support structure of the filter 12 by one support member 15 will be described. However, the present invention is not limited to the separation membrane module 11 in which both ends have the support structure shown in FIGS. 2A to 2C or 3A to 3C. What is necessary is that it is adopted on at least one end side of the separation membrane module 11 according to the structure of (1).

FIG. 2A is a sectional view showing a main part of the separation membrane module, FIG. 2B is a sectional view taken along line XX of FIG. 2A, and FIG. 2C is FIG. FIG. 2 is a sectional view taken along line PP of FIG.
FIG. 2D is an enlarged cross-sectional view of a portion A in FIG.

The filter 12 of the separation membrane module 11
Is composed of a pair of first and second support plates 16 and 20 having a plurality of through holes 17 and 21 through which the filter 12 is inserted. Circular concave portions 18 and 22 are provided, and the through holes 17 and 21 are opened at the bottom surfaces of the concave portions 18 and 22.

In the outer peripheral portions of the first support plate 16 and the second support plate 20, for example, three bolt insertion holes 16a and 20a are respectively formed at regular intervals.
Also, the first support plate 16 and the second support plate 20
At the bottom of each of the recesses 18 and 22 around the through holes 17 and 21, there are provided annular projections 19 and 23, and the projection 19 provided on the first support plate 16 is provided as shown in FIG. A large number of circular rings are partially connected in a pattern shape, and the pattern shape of the protruding portion 23 provided on the second support plate 20 is not shown, but is the same as that of FIG. 2B.

The concave portion 1 of the first support plate 16
An elastic member 24 having a plurality of through holes 25 through which the filter 12 is inserted is disposed in a space defined by the recess 8 and the concave portion 22 of the second support plate 20.
Has a pattern shape as shown in FIG.

The respective through holes 17, 25, 2 of the first support plate 16, the elastic member 24, and the second support plate 20 are provided.
After the filter 12 is inserted through the first support plate 1
6 and the second support plate 20 are bonded to each other to form an elastic member 24.
And a bolt 36 is inserted into the holes 16a and 20a of the first support plate 16 and the second support plate 20, and the two are joined by tightening with a nut 37.
Each filter 12 is supported in parallel. At this time, the elastic member 24 sandwiched between the protruding portion 19 of the first support plate 16 and the protruding portion 23 of the second support plate 20 is pressed and elastically deformed, and spreads toward the center of each through hole 25. The filter 12 can be securely brought into close contact with the outer periphery of the filter 12 and can be hermetically sealed.

Therefore, according to the first invention, the filter 12
Is surrounded by the elastic member 24,
Even if an impact is applied during handling or the device is used in an environment where large vibrations are constantly applied, no gap is formed between the filter 12 and the elastic member 24. Since it is absorbed and hardly transmitted to the filter 12, the airtightness is not impaired, and even when used in an environment where heat is applied, the elastic member 24 is always kept in close contact with the outer periphery of the filter 12. In addition, since the stress generated by the difference in thermal expansion between the filter 12 and the support member 15 can be absorbed by the elastic member 24, the reliability of the airtightness is not impaired. A high separation membrane device can be provided.

Further, according to the first invention, the elastic member 24 is sandwiched between the protrusion 19 of the first support plate 16 and the protrusion 23 of the second support plate 20 and pressed to be elastically deformed. Therefore, the interval between the filters 12 supported in parallel can be narrowed as compared with the conventional example using the O-ring 65 as shown in FIG. Since the number can be increased, a separation membrane device having high separation characteristics can be obtained.

Further, according to the first aspect of the present invention, even if the filter 12 is partially broken, some of which have low separation characteristics, or the elastic member 24 is corroded by being exposed to a corrosive fluid, The filter 10 can be easily disassembled simply by loosening it, and only the filter 12 that has been damaged or has poor separation characteristics can be replaced, or the corroded elastic member 24 can be easily replaced. At the time of assembly, the elastic member 24 is integrally formed. The first support plate 16
Alternatively, it is only necessary to put the O-ring 65 at a predetermined position of the concave portions 18 and 22 of the second support plate 20, and it is not necessary to insert the O-ring 65 for each filter 34 as in the conventional example shown in FIG. , Assembly time can be greatly reduced.

FIG. 3A is a sectional view showing a main part of the separation membrane module, FIG. 3B is a sectional view taken along line YY of FIG. 3A, and FIG. 3C is FIG. QQ sectional view of FIG. 3
FIG. 3D is an enlarged cross-sectional view of a portion B in FIG.

The filter 12 of the separation membrane module 11
Is composed of a pair of a first support plate 26 and a second support plate 29 having a plurality of through holes 27 and 30 through which the filter 12 is inserted. There are provided concave portions 28 and 31 each having a circular shape, and respective through holes 27 and 30 are formed on the bottom surfaces of the concave portions 28 and 31. The first support plate 26
For example, three bolt insertion holes 26a and 29a are formed at equal intervals in the outer peripheral portion of the second support plate 29, respectively.

Further, the recess 2 of the first support plate 26
8 and a recess 31 of the second support plate 29 are provided with a plurality of through-holes 33 through which the filter 12 is inserted. The elastic member 32 provided with is provided.

Then, the respective through holes 27, 33, 3 of the first support plate 26, the elastic member 32, and the second support plate 29 are provided.
After the filter 12 is inserted through the first support plate 2
6 and the second support plate 29 are attached to each other to form an elastic member 32.
And a bolt 36 is inserted into the holes 26a and 29a of the first support plate 26 and the second support plate 29, and the two are joined by tightening with a nut 37.
Each filter 12 is supported in parallel. At this time, the bottom surface of the concave portion 28 of the first support plate 26 and the second support plate 29
The projection 34 of the elastic member 32 sandwiched by the bottom surfaces of the concave portions 31 is pressed and elastically deforms, and the respective through holes 33 of the elastic member 32 expand toward the center, so that the outer periphery of the filter 12 is securely brought into close contact. And can be hermetically sealed.

Therefore, according to the second invention, the filter 12
Is surrounded by the elastic member 32,
Even when used in an environment where a shock is applied during handling or where a large vibration is constantly applied, there is no gap between the filter 12 and the elastic member 32. Since it is absorbed and hardly transmitted to the filter 12, the airtightness is not impaired, and the elastic member 32 is kept in close contact with the outer periphery of the filter 12 even when used in an environment where heat is applied. The filter 12 and the support member 1
The stress generated by the difference in thermal expansion between the elastic member 3 and the elastic member 3
2, it is possible to provide a highly reliable separation membrane device such that the airtightness is not impaired.

According to the second aspect of the present invention, the protrusion 34 of the elastic member 32 is sandwiched between the bottom surface of the concave portion 28 of the first support plate 26 and the bottom surface of the concave portion 31 of the second support plate 29 and pressed to elastically deform. Since the distance between the filters 12 supported in parallel can be reduced as compared with the conventional example using the O-ring 65 as shown in FIG. 7, the filter 12 is supported within a specific area. Since the number of filters 12 that can be used can be increased, a separation membrane device having high separation characteristics can be obtained.

Further, according to the second aspect of the invention, even if the filter 12 is partially damaged, the filter 12 has a low separation characteristic, or the elastic member 32 is corroded by being exposed to a corrosive fluid, 10 can be easily disassembled by simply loosening the filter, replacing only the filter 12 that is damaged or having poor separation characteristics, or replacing the corroded elastic member 32. At the time of assembly, the elastic member 32 is integrally formed. Therefore, the O-rings 65 need only be placed at predetermined positions of the concave portions 28 and 31 of the first support plate 26 or the second support plate 29, and an O-ring 65 is inserted into each filter 34 as in the conventional example shown in FIG. Since there is no need, the workability is excellent, and the assembling time can be significantly reduced.

Incidentally, as the porous cylindrical body 13 forming the filter 12, a metal sintered body or a ceramic sintered body can be used. In particular, the ceramic sintered body is preferred in terms of corrosion resistance, heat resistance, and light weight. It is preferable to use a sintered body, and for example, a ceramic composed mainly of alumina, silica, silica-alumina, mullite, cordierite, zirconia, silica-zirconia, titania, or the like is suitable. These ceramic sintered bodies are formed by extruding a mixture obtained by adding an auxiliary agent such as a binder or a plasticizer to the ceramic raw material and kneading the mixture, by an extrusion molding method, a casting molding method, a cold isostatic pressing method (CIP method), or the like. It is obtained by firing at a temperature lower than a normal firing temperature after forming the inside into a hollow shape, a monolithic shape having a number of longitudinal through holes therein, or a cylindrical shape having a honeycomb shape. And a porous body having fine pores communicating from the inner periphery to the outer periphery.

On at least one surface of the inner and outer peripheries of the porous cylindrical body 13, a separation having a pore occupying area ratio of about 70% and an average pore diameter of 0.10 to 0.25 μm. The filter 12 is preferably formed by applying the membrane 14, and the occupied area ratio and average diameter of the pores in the separation membrane 14 may be appropriately selected according to the size of the component to be separated.

The support member 1 for supporting the filter 12
As a material of the first support plates 16 and 26 and the second support plates 20 and 29 that constitute the fifth member 5, a dense metal or a sintered ceramic can be used. As the metal, stainless steel or titanium is preferable, and as the ceramic sintered body,
It is preferable to use ceramics mainly composed of alumina, silica, silica-alumina, mullite, cordierite, zirconia, silica-zirconia, titania and the like. In particular, since the ceramic sintered body is excellent in corrosion resistance and heat resistance and is lightweight, it is preferable to reduce the weight of the separation membrane module 11.
6 and 26 and the second support plates 20 and 29
The filter 12 and the first support plates 16 and 26 and the second support plates 20 and 29 are made of a ceramic sintered body of the same type as the ceramic sintered body forming the porous tubular body 13 forming the filter. Since the difference in expansion can be approximated, thermal stress acting between the two when heat is applied can be greatly reduced.
Can be prevented from being damaged, which is preferable.

Further, as a material forming the elastic members 24 and 32, a material having appropriate corrosion resistance and appropriate hardness is preferable, and a material having a Shore hardness in the range of 30 to 80 degrees is preferable. Is good. The reason is that if the Shore hardness is less than 30 degrees, elastic deformation tends to be too easy, and airtightness is impaired when pressure is applied. Conversely, if the Shore hardness exceeds 80 degrees, the elastic members 24, 32
Is too hard, so that the crushing allowance of the elastic members 24 and 32 is reduced, and the entire outer periphery of the filter 12 cannot be brought into close contact with a sufficient surface pressure, resulting in impaired airtightness. In addition, as a material having such characteristics,
Resins and rubbers such as silicone rubber, silicone resin, fluorine rubber, fluorine resin, and epoxy resin can be given, and the elastic members 24 and 32 may be formed of these resins and rubber.

[0041]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a separation membrane device provided with a separation membrane module 11 of the present invention and a conventional separation membrane module 33 is prepared.
An experiment was performed to compare the performance.

The filters 12 and 34 have an outer diameter of 3 mm,
37 porous membranes 13 each having an inner diameter of 2 mm and a length of 310 mm and having an average pore diameter of 0.2 μm attached to the outer peripheral surface of the porous cylindrical body 13 were prepared. As shown,
As shown in FIGS. 3 (a) to 3 (d), the separation membrane module 11 of the present invention in which the first support plate 16 and the second support plate 20 constituting the support member 15 are provided with annular projecting portions 19, 23. In addition, the separation membrane module 11 of the present invention provided with an annular protrusion 34 around the through hole 33 of the elastic member 32 constituting the support member 15, and as shown in FIG. Is manufactured with a conventional separation membrane module 33 in which is sealed with a glass material 43.
32, the filter 12, 34 and the support member 15,
An experiment was conducted to check for the presence or absence of leakage of fluid from the space 41. The elastic member 24 constituting the separation membrane module 11 according to the present invention was formed of silicon rubber.

Then, these separation membrane modules 11,
To 33, a mixed solution composed of water and IPA and heated to 150 ° C. was supplied at a pressure of 0.4 MPa, and the degree of sealing after a continuous separation operation for 40 hours was examined.

As a result, in continuous use for 40 hours,
In the separation membrane module 11 of the present invention, no leak failure occurred in both, but the conventional separation membrane module 33
Then, a leak failure occurred, and when confirmed in detail, small microcracks could be confirmed in the seal portion. From the above results, it can be seen that the separation membrane module 11 of the present invention is excellent.

[0045]

As described above, according to the present invention, in a separation membrane device in which a separation membrane module is provided inside a cylindrical casing, the separation membrane module is provided at least on the inner and outer circumferences of a porous cylindrical body. A plurality of filters provided with a separation membrane on one surface, an elastic member provided with a plurality of through holes into which the respective filters are inserted, and a plurality of through holes into which the respective filters are respectively inserted; and A first support plate and a second support plate which constitute a support member for supporting the plurality of filters, and a projection is provided around a through hole of the first support plate and / or the second support plate; Each filter is inserted through each through hole of the first support plate, the elastic member, and the second support plate to support a plurality of filters in parallel, and the first support plate An elastic member is sandwiched between the second support plate and the elastic member is pressed and elastically deformed by the projecting portion of the first support plate and / or the second support plate, thereby being brought into close contact with the outer periphery of the filter, and airtight. Or the separation membrane module, a plurality of filters provided with a separation membrane on at least one surface of the inner and outer peripheries of the porous cylindrical body, and a plurality of through holes through which each filter is inserted. An elastic member provided with a plurality of through-holes through which the filters are inserted, and a first support plate and a second support plate constituting a support member that supports the plurality of filters; A protrusion is provided around the through hole of the elastic member, and the first support plate,
An elastic member, and each filter is inserted in each through-hole of the second support plate to support the plurality of filters in parallel, and the first support plate and the second support plate sandwich an elastic member, And by making the protrusion of the elastic member press against the first support plate and / or the second support plate to be elastically deformed, the elastic member is brought into close contact with the outer periphery of the filter, and hermetically sealed.
Airtightness is not impaired even when used in an environment where shock is applied during handling or where large vibrations are constantly applied, and airtightness is impaired even when used in an environment where heat is applied. There is no.

Further, since the interval between filters can be narrowed as compared with the conventional example using an O-ring, the number of filters that can be supported within a specific area can be increased, and the separation having high separation characteristics can be achieved. A membrane device can be provided.

Further, the filter may be partially damaged,
Even if the elastic member is corroded due to poor separation characteristics or is exposed to corrosive fluid, it can be easily disassembled, replace only damaged or poorly separated filters, or remove corroded elastic members easily. In addition, since the elastic member is integrally formed at the time of assembly, it is only necessary to place it on a predetermined position of the first support plate or the second support plate. In comparison, the workability is excellent, and the assembling time can be significantly reduced.

Therefore, if the separation membrane module of the present invention is used, for example, water removal from a mixture of an organic solvent and water, water removal from a mixture of methylene chloride and water, CO2
Separation of CO2 from air and air and separation of hydrogen, water, and the like from the reaction system become possible.

Further, according to the present invention, since the porous cylindrical body, the first support plate, and the second support plate are formed of the same type of ceramic, the filter is excellent in corrosion resistance and can be used even when a large amount of heat is applied. It is possible to provide a separation membrane device which does not break and has excellent heat resistance and thermal shock resistance.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an example of a separation membrane device according to the present invention.

2A is a cross-sectional view showing a main part of a separation membrane module, FIG. 2B is a cross-sectional view taken along line XX of FIG. 2A, and FIG.
FIG. 3D is a cross-sectional view taken along the line PP of FIG.

3A is a cross-sectional view showing a main part of the separation membrane module, FIG. 3B is a cross-sectional view taken along line YY of FIG. 3A, and FIG.
(D) is an enlarged cross-sectional view of a portion B in (a).

FIG. 4 is a schematic sectional view showing a conventional separation membrane device.

FIG. 5 is a sectional view showing an example of a main part of a conventional separation membrane module.

FIG. 6 is a cross-sectional view showing another example of a main part in a conventional separation membrane module.

FIG. 7 is a cross-sectional view showing still another example of a main part in a conventional separation membrane module.

[Explanation of symbols]

1: Separation membrane device 2: Cylindrical casing 3: Flange part 4, 5: Fluid hole 6: Lid 7: Seal member 8: Ring 9: Bolt 10: Nut 11: Separation membrane module 12: Filter 13: Porous Cylinder 14: Separation membrane 15: Support member 16, 26: Second support plate 20, 29: Second support plate, 17, 21, 25, 2
7, 30, 33: through holes 18, 22, 28, 31: recesses 19, 23, 34: projecting portions 24, 32; elastic member 35: rod 36: bolt
37: Nut

Claims (3)

[Claims] 1. A separation membrane device having a separation membrane module inside a cylindrical casing, wherein the separation membrane module comprises a plurality of porous cylinders each having a separation membrane on at least one of the inner and outer circumferences of the porous cylindrical body. And a resilient member having a plurality of through holes into which the filters are inserted, and a support member comprising a plurality of through holes into which the filters are inserted, and supporting the plurality of filters. A first support plate and / or a second support plate, wherein the first support plate and / or the second support plate are provided with protrusions around a through hole; the first support plate, the elastic member, and the second support plate are provided. The filters are inserted in the respective through holes to support the plurality of filters in parallel, and an elastic member is sandwiched between the first support plate and the second support plate. The elastic member is pressed by the projecting portion of the first support plate and / or the second support plate to be elastically deformed, thereby being brought into close contact with the outer periphery of the filter and hermetically sealed. Separation membrane device. 2. A separation membrane device comprising a separation membrane module inside a cylindrical casing, wherein the separation membrane module comprises a plurality of porous cylinders each having a separation membrane on at least one surface of the inner and outer circumferences thereof. And a resilient member having a plurality of through holes into which the filters are inserted, and a support member comprising a plurality of through holes into which the filters are inserted, and supporting the plurality of filters. The filter includes a first support plate and a second support plate, and a protrusion is provided around a through hole of the elastic member. The filter is inserted into each of the through holes of the first support plate, the elastic member, and the second support plate. Now, the plurality of filters are supported in parallel, an elastic member is sandwiched between the first support plate and the second support plate, and a protrusion of the elastic member is connected to the first support plate. Over DOO and / or by causing to pressed elastically deformed to the second support plate is brought into close contact with the outer periphery of the filter, the separation membrane device, characterized in that so as to seal hermetically. 3. The separation membrane device according to claim 1, wherein the porous cylindrical body, the first support plate, and the second support plate are formed of the same type of ceramics.