Tubular ceramic oxygen permeation membrane assembly

Abstract

The utility model relates to a tubular ceramic oxygen permeable membrane component which comprises a metal perforated plate, at least two stepped holes are formed in the metal perforated plate in the thickness direction of the metal perforated plate, the at least two stepped holes are sequentially arranged in the length direction and / or the width direction of the metal perforated plate, and the stepped holes comprise first holes and second holes; the aperture of the first hole is greater than that of the second hole; the metal sleeve is of a hollow stepped structure and comprises a first sleeve body and a second sleeve body, the wall thickness of the first sleeve body is the same as that of the second sleeve body, the outer diameter of the first sleeve body is larger than that of the second sleeve body, the first sleeve body is fixedly arranged in the first hole, and the second sleeve body is fixedly arranged in the second hole; the tubular ceramic oxygen permeation membrane is fixedly arranged in the metal sleeve; the first rubber ring is arranged between the second sleeve and the tubular ceramic oxygen permeation membrane. According to the tubular ceramic oxygen permeation membrane component, the metal sleeve and the tubular ceramic oxygen permeation membrane are hermetically connected and fixed through the first rubber ring in a glue injection manner, so that the variable range of the size of the membrane tube is greatly enlarged.

Description

Technical Field

[0001] This utility model relates to the field of ceramic oxygen-permeable membrane technology, and in particular to a tubular ceramic oxygen-permeable membrane assembly. Background Technology

[0002] Air separation for oxygen production is crucial for both the environment and the chemical industry. To date, various separation methods have been developed for oxygen production, including cryogenic separation, pressure swing adsorption (PSA), or polymer membrane separation. These methods are either too energy-intensive or fail to yield high-purity oxygen products. Ion transport membranes (ITMs) made of perovskite oxides exhibit significantly high permeability and 100% oxygen permeation selectivity. Therefore, experts in the field have conducted extensive research on perovskite oxide ITMs over the past few decades. This method can reduce the cost of oxygen separation, and perovskite ceramic membranes offer lower energy consumption in air separation for oxygen production compared to conventional oxygen separation technologies. Furthermore, perovskite membranes can be potentially applied to oxygen fuel combustion to capture CO2, or used as membrane reactors for the partial oxidation of hydrocarbons into high-value-added chemicals. Perovskite ceramic oxygen-permeable membranes mainly include plate membranes, tubular membranes, and hollow fiber membranes. Compared to sheet membranes, tubular ceramic oxygen-permeable membranes have a higher specific surface area, and their thinner membrane material facilitates oxygen permeation. Furthermore, their shape allows for the integration of tubular ceramic oxygen-permeable membranes into membrane bundles, further improving their mechanical properties. However, resolving sealing and installation issues is the primary task in the installation of tubular ceramic oxygen-permeable membranes and modules.

[0003] However, ceramics are brittle materials and are extremely sensitive to defects, with a very small critical crack size. When tubular ceramic oxygen permeable membranes are damaged during service, they cannot be repaired at the damaged site like metals. A breakage in one or several membrane tubes will render the entire batch of membrane tubes on the ceramic mounting assembly unusable. Furthermore, to achieve the reuse of tubular ceramic oxygen permeable membranes and save costs, it is necessary to enable flexible installation and disassembly at the joints between the tubular ceramic oxygen permeable membranes and metal joints.

[0004] To obtain flexible and reliable joints, the differences between ceramic and metal materials in terms of chemical bond type, microstructure, physical properties, and mechanical properties must be considered, especially the difference in their coefficients of thermal expansion. Conventional connection methods often fail to join them together and meet performance requirements; therefore, appropriate connection methods must be selected to ensure satisfactory joint performance.

[0005] Currently, there are two main sealing methods for tubular ceramic breathable membranes (hereinafter referred to as "membrane tubes"): installation via custom silicone rubber onto a perforated plate or direct adhesive bonding of the membrane tubes to a metal perforated plate. While the custom silicone rubber method is relatively convenient and allows for replacement of broken membrane tubes, it suffers from a short lifespan and requires extremely high precision in the fit between the membrane tubes and the silicone rubber, as well as between the silicone rubber and the metal perforated plate, thus limiting the allowable dimensional variation. The adhesive method, on the other hand, involves directly inserting the membrane tubes into the metal perforated plate and bonding them with soft adhesive. This method offers good sealing performance and low cost, but if one or more membrane tubes break, the entire perforated metal plate must be removed, requiring the membrane tubes to be cut, shortening their length, and making cleaning the adhesive inside the metal perforated plate difficult. Therefore, there is an urgent need for a more flexible tubular ceramic breathable membrane assembly for installation and disassembly. Utility Model Content

[0006] The purpose of this invention is to address the shortcomings of existing technologies by providing a tubular ceramic oxygen-permeable membrane assembly.

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0008] This utility model provides a tubular ceramic oxygen-permeable membrane assembly, comprising: a metal porous plate, wherein at least two stepped holes are formed on the metal porous plate along the thickness direction of the metal porous plate, the at least two stepped holes are arranged sequentially along the length direction and / or width direction of the metal porous plate, the stepped holes include a first hole and a second hole, the diameter of the first hole is larger than the diameter of the second hole; a metal sleeve, the metal sleeve having a hollow stepped structure, the metal sleeve including a first sleeve and a second sleeve, the wall thickness of the first sleeve being the same as the wall thickness of the second sleeve, the outer diameter of the first sleeve being larger than the outer diameter of the second sleeve, the first sleeve being fixedly disposed in the first hole, and the second sleeve being fixedly disposed in the second hole; a tubular ceramic oxygen-permeable membrane, the tubular ceramic oxygen-permeable membrane being fixedly disposed inside the metal sleeve; and a first rubber ring, the first rubber ring being disposed between the second sleeve and the tubular ceramic oxygen-permeable membrane.

[0009] Preferably, the tubular ceramic oxygen-permeable membrane is fixedly connected to the first sleeve by adhesive injection.

[0010] Preferably, the tubular ceramic oxygen-permeable membrane assembly further includes: a second rubber ring, which is disposed between the second sleeve and the second hole; the outer wall of the second rubber ring is provided with water ripples.

[0011] Preferably, the diameter of the stepped hole narrows inward in the middle or near the middle region to form a first stepped portion, dividing the stepped hole into a first hole located at the top and a second hole located at the bottom.

[0012] Preferably, the metal sleeve tapers inward in the middle or near the middle region to form a second step portion that matches the first step portion, dividing the metal sleeve into a first sleeve located above and a second sleeve located below. The top of the first sleeve has an opening, and the bottom of the second sleeve has a bottom.

[0013] Preferably, the outer diameter of the tubular ceramic oxygen-permeable membrane is smaller than the inner diameter of the second sleeve.

[0014] Preferably, the outer diameter of the first sleeve matches the diameter of the first hole.

[0015] Preferably, the outer diameter of the second sleeve is smaller than the diameter of the second hole.

[0016] Preferably, the first sleeve and the second sleeve are integrally formed.

[0017] Preferably, the number of metal sleeves and tubular ceramic oxygen-permeable membranes is the same as the number of stepped holes.

[0018] The present invention adopts the above technical solution and has the following technical effects compared with the prior art:

[0019] 1. In this utility model, the metal sleeve of the tubular ceramic oxygen-permeable membrane assembly is sealed and fixed to the tubular ceramic oxygen-permeable membrane by means of a first rubber ring and glue injection, which greatly increases the variable range of membrane tube size.

[0020] 2. The sealed installation between the metal sleeve and the tubular ceramic oxygen-permeable membrane, as well as between the metal sleeve and the metal perforated plate, improves the pressure and vacuum values ​​that the tubular ceramic oxygen-permeable membrane assembly can withstand.

[0021] 3. A first rubber ring is provided on the surface of the tubular ceramic oxygen permeable membrane to avoid direct contact with the metal sleeve, so as to prevent the tubular ceramic oxygen permeable membrane from expanding during high-temperature operation, which could lead to collision or compression between the tubular ceramic oxygen permeable membrane and the metal sleeve, causing the tubular ceramic oxygen permeable membrane to break.

[0022] 4. The thickness of the first rubber ring fitted on the tubular ceramic oxygen permeable membrane can be selected according to the outer diameter of the tubular ceramic oxygen permeable membrane to adapt to the inner diameter of the second sleeve of the metal sleeve. It is not necessary to require the outer diameter of the tubular ceramic oxygen permeable membrane to be within a small range.

[0023] 5. The water ripple line on the outer wall of the second rubber ring on the metal sleeve is tightly sealed with the inner wall of the second hole on the metal porous plate, which improves the sealing performance of the tubular ceramic oxygen-permeable membrane assembly.

[0024] 6. The first rubber ring on the metal sleeve is replaceable;

[0025] 7. After one or more tubular ceramic oxygen permeable membranes on a metal porous plate break, they can be removed without removing the unbroken tubular ceramic oxygen permeable membranes, and without changing the length of the unbroken tubular ceramic oxygen permeable membranes. Attached Figure Description

[0026] Figure 1 This is a cross-sectional view of the tubular ceramic oxygen-permeable membrane assembly according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the metal perforated plate assembled with a metal sleeve according to an embodiment of the present invention;

[0028] Figure 3 This is a cross-sectional view of a perforated metal plate according to an embodiment of the present utility model;

[0029] Figure 4 This is a cross-sectional view of the metal sleeve and the second rubber ring assembled according to an embodiment of the present invention;

[0030] Figure 5 This is a cross-sectional view of the tubular ceramic oxygen-permeable membrane and the first rubber ring assembled according to an embodiment of the present invention;

[0031] Explanation of reference numerals in the attached drawings: 100-metal porous plate, 110-stepped hole, 111-first hole, 112-second hole, 200-metal sleeve, 210-first sleeve, 220-second sleeve, 230-second rubber ring, 300-tubular ceramic oxygen-permeable membrane, 310-first rubber ring. Detailed Implementation

[0032] The specific embodiments of this utility model will be described in detail below.

[0033] Unless otherwise defined, the technical or scientific terms used in the claims and description shall have the ordinary meaning as understood by one of ordinary skill in the art to which this utility model pertains.

[0034] The word "comprising" or similar terms used in this utility model patent application specification and claims mean that the objects preceding "comprising" include the objects listed after "comprising" or their equivalents, and do not exclude other objects.

[0035] An embodiment of this utility model provides a tubular ceramic oxygen-permeable membrane assembly, comprising: a metal porous plate 100, on which at least two stepped holes 110 are formed along the thickness direction of the metal porous plate 100, the at least two stepped holes 110 being arranged sequentially along the length direction and / or width direction of the metal porous plate 100, each stepped hole 110 including a first hole 111 and a second hole 112, the diameter of the first hole 111 being larger than the diameter of the second hole 112; and a metal sleeve 200, the metal sleeve 200 having a hollow stepped structure, the metal sleeve 200 enclosing... The system includes a first sleeve 210 and a second sleeve 220, the first sleeve 210 having the same wall thickness as the second sleeve 220, the outer diameter of the first sleeve 210 being larger than the outer diameter of the second sleeve 220, the first sleeve 210 being fixedly disposed within the first hole 111, and the second sleeve 220 being fixedly disposed within the second hole 112; a tubular ceramic oxygen-permeable membrane 300, which is fixedly disposed within the metal sleeve 200; and a first rubber ring 310, which is disposed between the second sleeve 220 and the tubular ceramic oxygen-permeable membrane 300.

[0036] Preferably, the tubular ceramic oxygen-permeable membrane assembly includes a metal porous plate 100, a metal sleeve 200, a tubular ceramic oxygen-permeable membrane 300, and a first rubber ring 310. The metal porous plate 100 has at least two stepped holes 110, which are arranged sequentially along the length and / or width direction of the metal porous plate 100. The stepped holes 110 are evenly distributed on the metal porous plate 100, and the distance between adjacent stepped holes 110 is equal. The stepped holes 110 are formed from top to bottom along the thickness direction of the metal porous plate 100, including a first hole 111 and a second hole 112. The diameter of the first hole 111 is larger than the diameter of the second hole 112, which not only makes the entire assembly... It is more stable under pressure and less prone to deformation, and also allows for uniform gas distribution within the component, thereby improving oxygen permeability. The apertures of the first hole 111 and the second hole 112 can be selected according to actual needs, and no specific limitation is made here. The metal sleeve 200 is disposed in the stepped hole 110. The metal sleeve 200 includes a first sleeve 210 and a second sleeve 220. The wall thickness of the first sleeve 210 is the same as that of the second sleeve 220, and the outer diameter of the first sleeve 210 is larger than that of the second sleeve 220. The second sleeve 220 is fixed in the second hole 112, and the first sleeve 210 is fixed in the first hole 111. The tubular ceramic oxygen permeable membrane 300 is fixed to the metal The outer diameter of the sleeve 200 is smaller than the inner diameter of the second sleeve 220. The outer diameter of the tubular ceramic oxygen-permeable membrane 300 can be selected according to actual needs and is not specifically limited here. The first rubber ring 310 is sleeved on the lower outer wall of the tubular ceramic oxygen-permeable membrane 300. The tubular ceramic oxygen-permeable membrane 300 and the first rubber ring 310 are then inserted together into the metal sleeve 200. The thickness of the first rubber ring 310 should be selected according to the outer diameter of the tubular ceramic oxygen-permeable membrane 300. The thickness of the first rubber ring 310 should be sufficient to fix the tubular ceramic oxygen-permeable membrane 300 to the second sleeve 220. There is no gap between the inner wall of the sleeve 220 and the inner wall of the second sleeve 220; the metal sleeve 200 eliminates the need to limit the outer diameter of the tubular ceramic oxygen permeable membrane 300 to a small range, and can be fixed by simply adjusting the thickness of the first rubber ring 310. This can adapt to various application scenarios of tubular ceramic oxygen permeable membranes 300 with different diameter requirements. Furthermore, the first rubber ring 310 on the surface of the tubular ceramic oxygen permeable membrane 300 prevents direct contact with the metal sleeve 200, thus preventing the tubular ceramic oxygen permeable membrane 300 from expanding during high-temperature operation and causing collision or compression between the tubular ceramic oxygen permeable membrane 300 and the metal sleeve 200, which could lead to breakage of the tubular ceramic oxygen permeable membrane 300.

[0037] Preferably, the materials of the perforated metal plate 100 and the metal sleeve 200 are corrosion-resistant and high-strength materials. For example, the perforated metal plate 100 and the metal sleeve 200 can be made of stainless steel or titanium alloy, as long as they have corrosion resistance and high strength. The material of the first rubber ring 310 is preferably rubber or silicone rubber. Both rubber and silicone rubber have excellent elasticity and resilience, and can deform under pressure to fill the tiny gaps in the contact surface, thereby forming an effective sealing layer. This helps to improve the overall sealing performance of the component and can work normally in high or low temperature environments. The surface is smooth and has a certain hardness, which can resist wear and scratches, thus helping to extend its service life and reduce replacement frequency and maintenance costs.

[0038] In some embodiments of this utility model, the tubular ceramic oxygen-permeable membrane 300 and the first sleeve 210 are fixedly connected by adhesive injection.

[0039] Preferably, since the wall thickness of the first sleeve 210 is the same as that of the second sleeve 220, and the outer diameter of the first sleeve 210 is larger than that of the second sleeve 220, the inner diameter of the first sleeve 210 should also be larger than that of the second sleeve 220. By using glue injection, a tight bond between the tubular ceramic oxygen permeable membrane 300 and the first sleeve 210 can be ensured, effectively preventing loosening or detachment caused by vibration or impact, thereby improving the stability and reliability of the entire component. Furthermore, the glue injection method also facilitates the replacement of the tubular ceramic oxygen permeable membrane 300. When it is necessary to replace the tubular ceramic oxygen permeable membrane 300, it is only necessary to remove the old membrane and re-apply glue to fix the new tubular ceramic oxygen permeable membrane 300, which is convenient, quick, and reduces maintenance costs.

[0040] Furthermore, the adhesive used for injection can be selected according to actual needs. Dedicated injection equipment should be used to ensure the accuracy and consistency of the injection process. During injection, attention should be paid to determining the injection location and amount to ensure that the adhesive can evenly fill the gap between the tubular ceramic oxygen-permeable membrane 300 and the first sleeve 210. After injection, the component should be cured to allow the adhesive to fully cure and form a stable connection. The curing time and temperature should be selected according to the type of adhesive and actual needs, and no specific limitations are made here.

[0041] In some embodiments of this utility model, the tubular ceramic oxygen-permeable membrane assembly further includes: a second rubber ring 230, which is disposed between the second sleeve 220 and the second hole 112; the outer wall of the second rubber ring 230 is provided with water ripples.

[0042] Preferably, the tubular ceramic oxygen-permeable membrane assembly further includes a second rubber ring 230. The second rubber ring 230 can further fill the tiny gap between the second sleeve 220 and the second hole 112, thereby significantly improving the sealing performance of the entire assembly. During assembly, the second rubber ring 230 is first fitted onto the outer wall of the second sleeve 220, and then the metal sleeve 200 with the second rubber ring 230 fitted onto it is embedded into the stepped hole 110. The inner wall of the second hole 112 is also provided with water ripples, which can cooperate with the water ripples on the outer wall of the second rubber ring 230, thereby enhancing the friction between the outer wall of the second rubber ring 230 and the inner wall of the second hole 112, so that the metal sleeve 200 is fixed in the stepped hole 110.

[0043] Preferably, the material of the second rubber ring 230 is rubber or silicone rubber. Both rubber and silicone rubber have excellent elasticity and resilience, and can deform under pressure to fill the tiny gaps in the contact surface, thereby forming an effective sealing layer. This helps to improve the overall sealing performance of the component and can work normally in high or low temperature environments. The surface is smooth and has a certain hardness, which can resist wear and scratches, thus helping to extend its service life and reduce replacement frequency and maintenance costs.

[0044] In some embodiments of this utility model, the diameter of the stepped hole 110 narrows inward in the middle or near the middle area to form a first stepped portion, dividing the stepped hole 110 into a first hole 111 located at the top and a second hole 112 located at the bottom.

[0045] Preferably, the stepped hole 110 simplifies the installation and fixing of the metal sleeve 200 and the stability of its connection. During processing, a base hole is first drilled, and then a milling cutter or other tool is used to cut in the middle or near the middle of the hole to form a stepped portion. The size of the stepped hole 110 and the position of the stepped portion can be selected according to actual needs, and no specific limitation is made here.

[0046] In some embodiments of this utility model, the metal sleeve 200 contracts inward in the middle or near the middle to form a second step that matches the first step, dividing the metal sleeve 200 into a first sleeve 210 located above and a second sleeve 220 located below. The top of the first sleeve 210 has an opening, and the bottom of the second sleeve 220 has a bottom.

[0047] Preferably, the metal sleeve 200 has a first sleeve 210 and a second sleeve 220, which can better adapt to the shape of the stepped hole 110, so that the second sleeve 220 is fixed in the second hole 112 and the first sleeve 210 is fixed in the first hole 111. During installation and fixing, it is only necessary to put the second rubber ring 230 on the outer wall of the second sleeve 220 and then push the metal sleeve 200 into the stepped hole 110 as a whole. The operation is simple and easy to implement.

[0048] In some embodiments of this utility model, the outer diameter of the tubular ceramic oxygen-permeable membrane 300 is smaller than the inner diameter of the second sleeve 220.

[0049] Preferably, when the outer diameter of the tubular ceramic oxygen-permeable membrane 300 is smaller than the inner diameter of the second sleeve 220, a certain gap can be formed between them. By filling the gap with the first rubber ring 310, liquid or gas leakage can be effectively prevented, thereby improving the sealing performance of the component. The smaller outer diameter of the tubular ceramic oxygen-permeable membrane 300 can prevent it from directly contacting the metal sleeve 200, thus preventing the tubular ceramic oxygen-permeable membrane 300 from expanding during high-temperature operation and causing collisions or compression between the tubular ceramic oxygen-permeable membrane 300 and the metal sleeve 200, resulting in breakage of the tubular ceramic oxygen-permeable membrane 300. The size of the tubular ceramic oxygen-permeable membrane 300 can be selected according to actual needs, and no specific limitation is made here.

[0050] In some embodiments of this utility model, the outer diameter of the first sleeve 210 matches the diameter of the first hole 111.

[0051] Preferably, the outer diameter of the first sleeve 210 matches the diameter of the first hole 111, so that the first sleeve 210 can be completely embedded in the first hole 111, which can further improve its sealing performance.

[0052] In some embodiments of this utility model, the outer diameter of the second sleeve 220 is smaller than the diameter of the second hole 112.

[0053] Preferably, the outer diameter of the second sleeve 220 is small, and a second rubber ring 230 is fitted on the outer wall of the second sleeve 220, which can firmly fix the second sleeve 220 to the second hole 112, and at the same time further enhance the sealing performance and improve the pressure and vacuum value that the tubular ceramic oxygen permeable membrane assembly can withstand.

[0054] In some embodiments of this utility model, the first sleeve 210 and the second sleeve 220 are integrally formed.

[0055] Preferably, the first sleeve 210 and the second sleeve 220 are integrally formed, making the overall structure of the metal sleeve 200 more compact, reducing potential weaknesses at the joints, thereby improving the structural strength and rigidity of the entire component, helping to withstand greater loads and stresses, and extending its service life. During the manufacturing process, a mold or model that meets the requirements is made, and then the metal material is injected into the mold or directly processed into the required shape of the metal sleeve 200 through appropriate processing methods, which helps to improve production efficiency.

[0056] In some embodiments of this utility model, the number of metal sleeves 200 and tubular ceramic oxygen-permeable membranes 300 are the same as the number of stepped holes 110.

[0057] Preferably, when the number of metal sleeves 200 and tubular ceramic oxygen-permeable membranes 300 is consistent with the number of stepped holes 110, it can be ensured that each stepped hole 110 is tightly covered, which helps to improve the sealing performance of the component. By precisely matching the number of metal sleeves 200, tubular ceramic oxygen-permeable membranes 300 and stepped holes 110, the structure of the entire component is more stable, reducing the risk of deformation or damage caused by local stress concentration.

[0058] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A tubular ceramic oxygen-permeable membrane module, characterized in that, include: A metal perforated plate (100) has at least two stepped holes (110) along its thickness direction. The at least two stepped holes (110) are arranged sequentially along the length and / or width direction of the metal perforated plate (100). Each stepped hole (110) includes a first hole (111) and a second hole (112). The diameter of the first hole (111) is larger than the diameter of the second hole (112). A metal sleeve (200) has a hollow stepped structure. The metal sleeve (200) includes a first sleeve (210) and a second sleeve (220). The wall thickness of the first sleeve (210) is the same as that of the second sleeve (220). The outer diameter of the first sleeve (210) is larger than that of the second sleeve (220). The first sleeve (210) is fixedly disposed in the first hole (111), and the second sleeve (220) is fixedly disposed in the second hole (112). A tubular ceramic oxygen-permeable membrane (300) is fixedly disposed inside the metal sleeve (200); And a first rubber ring (310), which is disposed between the second sleeve (220) and the tubular ceramic oxygen-permeable membrane (300).

2. The tubular ceramic oxygen-permeable membrane assembly according to claim 1, characterized in that, The tubular ceramic oxygen-permeable membrane (300) is fixedly connected to the first sleeve (210) by adhesive injection.

3. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, Also includes: The second rubber ring (230) is disposed between the second sleeve (220) and the second hole (112); The outer wall of the second rubber ring (230) is provided with water ripples.

4. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, The diameter of the stepped hole (110) narrows inward in the middle or near the middle area to form a first stepped portion, dividing the stepped hole (110) into a first hole (111) located above and a second hole (112) located below.

5. The tubular ceramic oxygen-permeable membrane module according to claim 4, characterized in that, The metal sleeve (200) tapers inward in the middle or near the middle to form a second step that matches the first step, dividing the metal sleeve (200) into a first sleeve (210) located above and a second sleeve (220) located below. The top of the first sleeve (210) has an opening, and the bottom of the second sleeve (220) has a bottom.

6. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, The outer diameter of the tubular ceramic oxygen-permeable membrane (300) is smaller than the inner diameter of the second sleeve (220).

7. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, The outer diameter of the first sleeve (210) matches the diameter of the first hole (111).

8. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, The outer diameter of the second sleeve (220) is smaller than the diameter of the second hole (112).

9. The tubular ceramic oxygen-permeable membrane module according to claim 1, characterized in that, The first sleeve (210) and the second sleeve (220) are integrally formed.

10. The tubular ceramic oxygen-permeable membrane module according to any one of claims 1-9, characterized in that, The number of the metal sleeve (200) and the tubular ceramic oxygen-permeable membrane (300) are the same as the number of the stepped holes (110).

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