JP3804779B2 - Gas filter support device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas filter support device that supports a ceramic filter that removes high-temperature exhaust gas generated in a waste incinerator, an incineration ash melting furnace, or the like inside an exhaust gas introduction chamber.
[0002]
[Prior art]
Conventionally, when collecting exhaust gas containing dust generated from a waste incinerator or an incineration ash melting furnace, an electric dust collector or a bag filter has been mainly used. However, in recent years, the use of electrostatic precipitators has been avoided due to the indication that dioxins are re-synthesized, and bag filters have been used frequently. However, when this bag filter is used for dust collection, it is necessary to consider the heat resistance limit, and before introducing the exhaust gas into the bag filter, it is necessary to reduce the temperature of the exhaust gas to 150 ° C. to 200 ° C. become.
[0003]
Recently, a porous ceramic filter having heat resistance has been developed and put into practical use as a filter that can be adapted to high-temperature gas. This ceramic filter is solid and has a through hole with a diameter of 10 to 20 μm. By passing the exhaust gas therethrough, the dust in the exhaust gas is filtered and removed. Can be manufactured.
[0004]
Therefore, a gas filter device that removes dust in high-temperature exhaust gas using such a ceramic filter has been developed, and has been proposed in Japanese Patent Application Laid-Open No. 2001-179024 by the present applicants.
[0005]
FIG. 4 shows a horizontal sectional view (a) and an outer shape (left half) and a vertical sectional view (right half) (b) of the gas filter device of the prior application, and FIG. 5 shows a sectional view (R (Part enlarged sectional view) is shown.
[0006]
As shown in FIG. 4, the gas filter device 100 of the prior application includes a casing 103 having an outer cylinder 101 having a cylindrical body and an inner cylinder 102 provided concentrically on the inner side of the outer cylinder 101. ing. In this casing 103, in order to define an internal space surrounded by the outer cylinder 101 and the inner cylinder 102, a lid body 104 is provided at the upper part, and an annular hopper 105 having an inverted triangular cross section is provided at the lower part. A gas inlet 106 through which exhaust gas is introduced into a part of the lid 104 is opened. Similarly, in order to define the internal space of the inner cylinder 102, a lid body 107 is provided at the lower portion, and a gas outlet port 108 for deriving clean gas is provided at the upper portion. Although not shown, a dust carrying conveyor (for example, a screw conveyor) is disposed below the annular hopper 105.
[0007]
A plurality of cylindrical (or rectangular) ceramic filters 110 are arranged between the outer cylinder 101 and the inner cylinder 102. The ceramic filters 110 are arranged in multiple stages in the horizontal and radial directions and in the vertical direction about the central axis of the inner cylinder 102.
[0008]
As shown in FIG. 5, these ceramic filters 110 are provided with a backwash air inlet 111 at one end, and the other end is connected to a gas passage 112. A through hole 113 is formed in the wall of the outer cylinder 101 at the mounting and fixing portion of the ceramic filter 110, and the other end of the ceramic filter 110 is fitted and fixed to the wall of the inner cylinder 102. It is configured.
[0009]
In the backwash air inlet 111 of the ceramic filter 110 arranged in this way, a backwash air blow pipe 121 branched from the pulse pipe 120 piped along the outer surface of the outer cylinder 101 has its tip. Inserted and arranged. The attachment mechanism 122 of the backwash air blowing pipe 121 includes a call port 123 provided on the outer wall surface of the outer cylinder 101, a cap 124 bolted by a flange 123 ′ of the call port 123, and an outside inside the cap 124. A coil spring 126 for energizing a gasket 125 that seals the end face of the ceramic filter 110 slightly protruding from the through hole 113 of the wall of the cylinder 101 is configured. The backwash air blowing pipe 121 is formed at the center of the cap 124. The tip of the ceramic filter 110 is inserted through the ceramic filter 110. The inside of the cap 124 is sealed by a gasket 127 at the flange portion with the calling port 123, and the end of the ceramic filter 110 is sandwiched between the outer periphery of the protruding portion and the calling port 123 by a gland packing 128. Sealed to prevent leakage of gas to be filtered as well as backwash air. Further, on the gas passage port 112 side of the ceramic filter 110, a gas passage restraining means (orifice) 129 that restricts the passage of backwash air by reducing the passage area is provided. The orifice 129 and the gas passage port are provided. Between the large-diameter portion 112, a gasket 130 is provided for preventing the flow of exhaust gas containing dust between the outer cylinder 101 and the inner cylinder 102.
[0010]
In the gas filter device 100 configured as described above, when exhaust gas containing dust is introduced from the gas inlet 106, the exhaust gas passes through the pores of the ceramic filters in the annular internal space, and the ceramic filter 110. The dust is filtered into a clean gas, and is discharged from the end of the ceramic filter 110 to the outside of the system through the gas passage 112 and the inner space of the inner cylinder 102 from the gas outlet 108. At that time, since dust accumulates on the outer surface and pores of the ceramic filter 110, it is necessary to periodically send back air from the pulse tube 120 and backwash the dust to remove the dust from the ceramic filter 110. The dust thus removed is collected in an annular hopper 105 disposed in the lower part of the annular internal space, and is discharged out of the system by a dust carry-out conveyor.
[0011]
When the ceramic filter 110 is backwashed, compressed air is supplied to the pulse tube 120, and compressed air is blown into the filter from the backwash air blowing pipe 121 disposed in the backwash air blowing port 111 of each ceramic filter 110. And backwash.
[0012]
As described above, the ceramic filter 110 is provided with the orifice 129 having a narrow passage area at the opening thereof, and the flow rate of the backwash air flowing from the gas passage port 112 into the inner cylinder 102 through the orifice 129. Is limited. Therefore, although the end of the ceramic filter 110 is open, the inside of the pipe is kept at a higher pressure than the inner space of the outer cylinder 101, so the backwash air passes through the pores of the outer cylinder 101. Dust that flows out into the internal space and adheres to the filter can be removed.
[0013]
[Problems to be solved by the invention]
The ceramic filter 110 of the gas filter device 100 having such a configuration is supported in the outer cylinder 101 by being urged by a coil spring 126 disposed in a mounting mechanism 122 disposed at an end thereof. The sealing performance of the gasket 125 in the mounting mechanism 122 and the gasket 130 disposed in the gas passage port 112 is fully exhibited only when the urging force of the coil spring 126 sufficiently acts on the ceramic filter 110. It has become. However, since the coil spring 126 is disposed in the vicinity of the end of the ceramic filter 110, it is highly likely that the coil spring 126 is in direct contact with the high-temperature exhaust gas leaking from the tube of the ceramic filter 110 or the outer cylinder 101, and for a long period of time. There is a problem that it is difficult to exert the sealing properties of the gaskets 125 and 130 over the other.
[0014]
On the other hand, the gasket 130 disposed on the fixed portion at the other end of the ceramic filter 110 is attached to a refractory material that is difficult to form a flat surface and the end face of the ceramic filter 110, so that it is compatible with the attached portion. In addition, the resistance to high temperatures is low. For this reason, it is impossible to exhibit sealing properties for a long period of time.
[0015]
Further, since the coil spring 126 is cut off from the outside, the internal high temperature exhaust gas is easily corroded, and there is a problem in terms of maintenance.
[0016]
The present invention has been made to solve such problems, and it is an object of the present invention to provide a gas filter support device that can exhibit sealing performance over a long period of time and is easy to maintain. is there.
[0017]
[Means for solving the problems and actions / effects]
In order to achieve the above object, the gas filter support device according to the first invention comprises:
A gas filter support device comprising a pressing means for pressing one end of a ceramic filter installed so as to straddle an internal space of a gas introduction chamber into which high-temperature exhaust gas is introduced, and a supporting means for supporting the other end of the ceramic filter Because
The pressing means includes an air cylinder and a pressing force transmitting member that transmits a pressing force from the air cylinder to one end of the ceramic filter and presses the ceramic filter toward the supporting means. To do.
[0018]
According to the gas filter support device of the present invention, the pressing force transmission member for transmitting the pressing force is arranged between the air cylinder which is a generation source of the pressing force on the ceramic filter and the ceramic filter. In other words, the air cylinder is arranged at a location away from the end face of the ceramic filter. Therefore, there is no direct contact with the high temperature exhaust gas leaked from the gas filter device. Therefore, the ceramic filter is pressed toward the support means for a long period of time, and the sealing performance of the gasket disposed between the pressing force transmission member and one end face of the ceramic filter is maintained. Can do.
[0019]
In addition, since an air cylinder is used in the present invention, the pressing state can be visually confirmed from the outside, and there is also an advantage that maintenance is simple. Further, since the air pressure can be made variable, the pressing state can be easily adjusted.
[0020]
In the present invention, it is preferable that the pressing force transmission member also serves as a backwash air jet pipe for jetting compressed air for backwashing (second invention). By doing so, it is possible to reduce the number of parts and simplify the device configuration.
[0021]
Next, the gas filter support device according to the third invention is:
A gas filter support device comprising a pressing means for pressing one end of a ceramic filter installed so as to straddle an internal space of a gas introduction chamber into which high-temperature exhaust gas is introduced, and a supporting means for supporting the other end of the ceramic filter Because
The support means is fixed to an inner peripheral portion of a through hole formed in the wall of the gas introduction chamber, and has a female support member having an opening into which the other end of the ceramic filter is inserted; A male support member disposed opposite to the end face of the other end of the ceramic filter and screwed to the female support member, and a first support member disposed between the male support member and the end face of the other end of the ceramic filter. 1 gasket and a 2nd gasket are provided, It is characterized by the above-mentioned.
[0022]
According to the present invention, the other end of the ceramic filter is constituted by a female support member and a male support member screwed to the female support member, and is arranged between the male support member and the other end of the ceramic filter. The end face of the other end of the ceramic filter is sealed by the first gasket and the second gasket disposed between the opposing surfaces of the female support member and the male support member, thereby preventing the exhaust gas from flowing. In this gas filter support device, since the male support member can be easily detached from the female support member, the first gasket and the second gasket can be easily and quickly replaced, which is advantageous in terms of maintenance. Moreover, the sealing performance of the 2nd gasket distribute | arranged between the opposing surfaces can be improved by forming these male and female support members with a material with easy plane formation.
[0023]
The second gasket in the third invention is preferably a copper metal packing (fourth invention). By using copper having a high ductility at a high temperature and a high conformability to the second gasket, a high level of sealing force can be maintained for a long time under a high temperature condition.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Next, specific embodiments of the gas filter support device according to the present invention will be described with reference to the drawings.
[0025]
FIG. 1 shows a horizontal sectional view (a), an outer shape (left half portion), and a vertical sectional view (right half portion) (b) of a gas filter device according to an embodiment. FIG. The figure (P section enlarged sectional view of FIG.1 (b)) is shown, and the principal part expanded sectional view of FIG. 1 (Q section enlarged sectional view of FIG.1 (b)) is each shown by FIG.
[0026]
The gas filter device 1 according to the present embodiment includes a casing 4 having a cylindrical body and having an outer cylinder 2 made of a refractory and an inner cylinder 3 provided concentrically inside the outer cylinder 2. ing. A lid 5 is provided in the upper part of the annular internal space between the inner and outer cylinders 2 and 3 of the casing 4, and an annular hopper 6 having an inverted triangular cross section is provided in the lower part. An annular inner space is defined between them. A gas inlet 7 for introducing exhaust gas is provided in a part of the lid 5. A lid 8 is provided at the lower part of the inner space of the inner cylinder 3, and a gas outlet 9 for extracting the exhaust gas from which dust has been removed is provided at the upper part so as to define the inner space of the inner cylinder 3. Has been.
[0027]
A plurality of cylindrical ceramic filters 11 are arranged in an internal space (corresponding to the gas introduction chamber of the present invention) between the outer cylinder 2 and the inner cylinder 3. These ceramic filters 11 are arranged radially in the horizontal direction around the central axis of the inner cylinder 3 and in multiple stages in the vertical direction.
[0028]
As shown in FIG. 2, the fixing portion at one end of the ceramic filter 11 is formed so that the inner diameter of one end is substantially the same as the outer diameter of the ceramic filter 11 and the inner diameter of the other end is slightly larger than that. It is the iron insertion fixing | fixed part 12 which has the stepped hole formed. The insertion fixing portion 12 is fitted and fixed to the outer cylinder 2 so that the large diameter portion 12 ′ of the stepped hole faces the outside of the outer cylinder 2. One end portion of the ceramic filter 11 is inserted from a small diameter portion 12 ″ of the stepped hole in the insertion fixing portion 12, and the opening of the end portion of the ceramic filter 11 is arranged so as to slightly protrude outside the outer cylinder 2. Fixed.
[0029]
Between the large-diameter portion 12 ′ of the stepped hole of the insertion fixing portion 12 and the outer peripheral surface of the ceramic filter 11, a ceramic packing 13 made of fibrous ceramic is disposed. The ceramic packing 13 has elasticity and has a characteristic that its sealing performance changes when pressed.
[0030]
A cylindrical member 14 that presses the ceramic packing 13 is inserted outside the ceramic packing 13. The cylindrical member 14 is bolted to the insertion fixing portion 12 at an integrally formed flange portion 14a. The cylindrical member 14 is configured such that the fastening force of the bolt attached to the flange portion 14a can be adjusted so that the performance of the ceramic packing 13 can be maintained satisfactorily.
[0031]
A ceramic filter pressing device 15 that presses the ceramic filter 11 and supports it between the inner and outer cylinders 2 and 3 at one end of the ceramic filter 11 that is slightly protruded and fixed to the outside of the outer cylinder 2 (of the present invention). Equivalent to the pressing means).
[0032]
The ceramic filter pressing device 15 is inserted into the tube of the filter 11 through an opening at one end of the ceramic filter 11 whose tip is slightly protruded to the outside of the outer cylinder 2, and backwash compressed air ( A backwash air jet pipe 16 for jetting backwash air), an air cylinder 17 for generating a pressing force while being attached to the backwash air jet pipe 16, and a ceramic filter pressing device 15 attached to the air cylinder 17. It is comprised from the fixing | fixed part 18 which fixes the whole to the exterior.
[0033]
A flange portion 16a having a diameter substantially equal to the outer diameter of the ceramic filter is welded to the outer peripheral surface in the vicinity of the distal end portion of the backwash air jet pipe 16, and a thick annular member 16b is attached to the flange portion 16a. Is welded. The annular member 16 b functions so as to be in close contact with the end face of the ceramic filter 11 when the tip of the backwash air jet pipe 16 is inserted into the pipe from the end of the ceramic filter 11. A gasket 19 for preventing leakage of exhaust gas in the pipe of the ceramic filter 11 is provided on a close contact surface between the end face of the ceramic filter 11 and the thick annular member 16b welded to the flange portion 16a of the backwash air jet pipe 16. Is arranged. The flange portion 16a of the backwash air jet pipe 16 and the thick annular member 16 welded to the flange portion 16a may be integrally formed.
[0034]
Also, a compressed air intake port 16c for taking back compressed air for backwashing is formed in the vicinity of the rear end portion of the backwash air jet tube 16 (the side opposite to the tip portion inserted into the ceramic filter tube). Has been. The backwash air intake port 16c is connected to an air compressor (not shown) provided outside via a flexible tube (not shown). By regularly supplying compressed air from the air compressor, backwash air is ejected into the tube of the ceramic filter 11.
[0035]
The air cylinder 17 attached to the backwash air jet pipe 16 is provided with an air intake member 17a for taking in air. The intake member 17 a is connected to an external air compressor (not shown), and the air supplied from the air compressor is introduced into the air cylinder 17. Thus, the pressing force from the air cylinder 17 presses the backwash air jet pipe 16 via the pressing member 20, thereby pressing the ceramic filter 11 toward the other end side (inner cylinder 3 side).
[0036]
The fixed portion 18 is supported by another fixed object via, for example, a ball joint. Thereby, the direction of the axis of the air cylinder 17 can move freely.
[0037]
On the other hand, as shown in FIG. 3, the body portion of the inner cylinder 3 is composed of an iron wall member 21 and a refractory 22 lined on the inner surface side of the wall member 21.
[0038]
The other end portion of the ceramic filter 11 is formed in an inner peripheral portion of a communication hole 23 formed in the wall portion of the inner cylinder 3 so as to communicate the inner space of the inner cylinder 3 and the inner space between the inner and outer cylinders. An end face of a male male support member 25 which is inserted into an opening of the fixed female female support member 24 and is screwed and fixed to the female support member 24 from the inner side (the inner space side of the inner cylinder 3). Is supported by the inner cylinder 3. As shown in FIG. 3, the communication hole 23 is formed so that the hole made in the iron wall member 21 is slightly wider than the outer diameter of the ceramic filter 11 and the same axis as the hole of the wall member 21. And a stepped hole made of a hole drilled in the refractory 22 so as to be wider than the hole of the wall member 21.
[0039]
The female support member 24 has an inner peripheral surface from one end opening to the middle of a hole formed so as to penetrate both ends of the female support member 24 and to allow the ceramic filter 11 to be inserted. Has a female screw portion 24a to be threaded. The end surface of the opening side of the female support member 24 opposite to the side where the female screw portion 24 a is provided is formed on the iron wall member 21 exposed at the inner peripheral portion of the communication hole 23, and the center of the hole of the wall member 21. The shaft is welded so that the axis of the hole of the female support member 24 coincides, and the opening of the end face faces the internal space between the inner and outer cylinders 2 and 3 through the hole formed in the wall member 21. Has been. On the other hand, the male support member 25 screwed into the female support member 24 is composed of a threaded male screw portion 25a and a flange-shaped head portion 25b, and has a through hole 25c at the center thereof. When the male support member 25 is screwed to the female support member 24, the dust-removed exhaust gas introduced into the tube of the ceramic filter 11 passes through the through hole 25c and enters the internal space of the inner cylinder 3. To be reached.
[0040]
Moreover, between the opposing surfaces of both the support members 24 and 25 (between the end surface of the female support member 24 and the head portion 25b of the male support member 25), it exhibits high ductility at high temperatures and a high degree of familiarity. A copper metal packing 27 (second gasket) formed of copper is disposed, and when the other end of the ceramic filter 11 is disposed on both support members 24 and 25, the space between the inner and outer cylinders 2 and 3 is increased. The flow of exhaust gas from the inside to the internal space of the inner cylinder 3 is prevented.
[0041]
An orifice plate 28 is attached to the end face of the other end of the ceramic filter 11 to prevent a rapid decrease in the pressure in the tube of the ceramic filter 11. The orifice plate 28 and the male support member 25 are attached to the orifice plate 28. A gasket 29 (first gasket) for preventing leakage of gas in the pipe of the filter 11 is disposed on the end face of the filter 11.
[0042]
Air is supplied to the air cylinder 17 of the ceramic filter pressing device 15 from an external air compressor so as to always generate a pressing force. The pressing force generated from the air cylinder 17 causes the ceramic filter 11 to move to the other end side (inner cylinder) via the pressing member 20 and the thick annular member 16b attached to the flange portion 16a of the backwash air jet pipe 16. 3 side). At this time, the gasket 19 disposed between the annular member 16 b and the end face of the ceramic filter 11, and the other end face of the ceramic filter 11 and the end face of the male support member 24 are disposed. A sufficient pressing force is also applied to the gasket 29. Thus, the sealing performance of each of the gaskets 19 and 29 is exhibited.
[0043]
According to the ceramic filter pressing device 15 according to the present embodiment, the air cylinder 17 that is a generation source of the pressing force is not directly attached to the ceramic filter 11, and is interposed through the pressing member 20 and the backwash air jet pipe 16. It is attached indirectly. In other words, the air cylinder 17 is arranged at a position away from the attachment part (insertion fixing part 12) or the end opening of the ceramic filter 11 to some extent. Therefore, even if the high-temperature exhaust gas introduced between the inner and outer cylinders 2 and 3 from the gas inlet 7 leaks out of the gas filter device 1 from the attachment or opening of the ceramic filter 11, the air The exhaust gas does not come into direct contact with the cylinder 17. For this reason, the pressing force to the ceramic filter 11 can be maintained over a long period of time, and the ceramic filter 11 can be reliably supported in the internal space between the inner and outer cylinders 2, 3. The gasket 19 disposed between the annular member 16b and one end of the ceramic filter 11 and the gasket 29 disposed between the other end of the ceramic filter 11 and the end of the male support member 25 described above. Sealing performance can be exhibited over a long period of time.
[0044]
Further, since the air cylinder 17 is used as a means for pressing the ceramic filter 11, the pressing state can be easily performed by visual observation, and quick replacement when an abnormality occurs is possible. Thus, it is excellent also in terms of maintenance. Moreover, since the air pressure of the air cylinder 17 can be made variable, the pressing state can be easily adjusted.
[0045]
In addition, since the fixing portion 18 of the ceramic filter pressing device 15 is fixed to the outside by a ball joint or the like and allows a certain degree of free movement, the ceramic filter 11 may be misaligned. However, it can cope with the deviation of the axis. In this way, even when the axial displacement of the ceramic filter 11 occurs, a sufficient pressing force can be applied to the ceramic filter 11 and the gaskets 19 and 29 to maintain their sealing force.
[0046]
Moreover, in this embodiment, since the copper metal packing 27 which shows the characteristic that high ductility is exhibited between the female support member 24 and the male support member 25 at a high temperature and the conformability is high, is disposed. Excellent sealing performance can be exhibited over a long period of time under high temperature conditions, and leakage of exhaust gas that is not dusted into the inner space of the inner cylinder 3 can be suppressed.
[0047]
Further, by removing the male support member 25 from the female support member 24, the ceramic filter 11 and the copper metal packing 27 can be easily replaced, which is advantageous in terms of maintenance.
[0048]
In the present embodiment, the above-described support members 24 and 25 are fixed in the communication hole 23 formed in the wall of the inner cylinder 3. However, the female support member 24 is attached to the outer cylinder 3. The ceramic filter 11 on the outer wall 2 side is attached by attaching a male support member whose axial line is not hollowed to the female support member 24 and attaching a copper metal packing 27 between the opposing surfaces. Support means. Needless to say, even in such a case, the sealing performance is maintained for a long time.
[0049]
Further, even in an inner cylinder in which a boiler water pipe is embedded so that the inside can be cooled, a female support member 24 is welded to the boiler water pipe, and a male support member 25 is screwed into the female support member 24. As a result, it is possible to maintain long-term sealing performance and to simplify maintenance.
[0050]
Further, in the present embodiment, description has been given of the case where the backwash air is ejected from the outside of the casing 4. However, if the wall of the casing 4 and the air cylinder 17 are separated to some extent, the backwash is performed from the inside of the inner cylinder 3. A structure that ejects air may be used.
[Brief description of the drawings]
FIG. 1 is a horizontal sectional view (a) and an outer shape (left half) and a vertical sectional view (right half) (b) of a gas filter device according to an embodiment of the present invention.
FIG. 2 is a partial enlarged cross-sectional view of FIG. 1 (P-part enlarged cross-sectional view of FIG. 1B).
3 is a partial enlarged cross-sectional view of FIG. 1 (Q-part enlarged cross-sectional view of FIG. 1B).
FIG. 4 is a horizontal sectional view (a), an outer shape (left half portion), and a vertical sectional view (right half portion) (b) showing a conventional gas filter device.
5 is a partially enlarged sectional view of FIG. 4 (an enlarged sectional view of a portion R in FIG. 4B).
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Gas filter apparatus 2 Outer cylinder 3 Inner cylinder 4 Casing 11 Ceramic filter 15 Ceramic filter press apparatus 16 Backwash air injection pipe 17 Air cylinder 19, 29 Gasket 20 Press member 24 Female support member 25 Male support member 27 Copper metal packing

Claims (4)

A gas filter support device comprising a pressing means for pressing one end of a ceramic filter installed so as to straddle an internal space of a gas introduction chamber into which high-temperature exhaust gas is introduced, and a supporting means for supporting the other end of the ceramic filter Because
The pressing means includes an air cylinder and a pressing force transmitting member that transmits a pressing force from the air cylinder to one end of the ceramic filter and presses the ceramic filter toward the supporting means. Gas filter support device. 2. The gas filter support device according to claim 1, wherein the pressing force transmission member also serves as a backwash air jet pipe for jetting compressed air for backwashing. A gas filter support device comprising a pressing means for pressing one end of a ceramic filter installed so as to straddle an internal space of a gas introduction chamber into which high-temperature exhaust gas is introduced, and a supporting means for supporting the other end of the ceramic filter Because
The support means is fixed to an inner peripheral portion of a through hole formed in the wall of the gas introduction chamber, and has a female support member having an opening into which the other end of the ceramic filter is inserted; A male support member disposed opposite to the end face of the other end of the ceramic filter and screwed to the female support member, and a first support member disposed between the male support member and the end face of the other end of the ceramic filter. A gas filter support device comprising: 1 gasket; and a second gasket disposed between opposing surfaces of the female support member and the male support member. The gas filter support device according to claim 3, wherein the second gasket is a copper metal packing.

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