Multifunctional ceramic filter tube

Abstract

The utility model relates to a multifunctional ceramic filter tube, which comprises an outer tube and an inner tube, both the outer tube and the inner tube are provided with flange plate surfaces with the same diameter, the flange plate surfaces of the outer tube and the inner tube are provided with a plurality of groove structures capable of interacting with each other, the groove structures are tightly attached, both the outer tube and the inner tube adopt multi-layer ceramic structures, and the outer tube and the inner tube are made of ceramic materials. And different catalysts are respectively coated. According to the multifunctional ceramic filter tube, the inner tube and the outer tube are arranged, and different catalysts are laid on the inner tube and the outer tube, so that the function of treating different flue gas pollutants is realized, and meanwhile, the grooves which interact with each other are formed in the flange plate surfaces of the outer tube and the inner tube, so that the outer tube and the inner tube are more convenient to mount. Further, the outer tube applies a compressive stress to the outer periphery of the ceramic tube body by an expansive force, so that a tensile stress generated in the ceramic tube due to a mechanical or thermal reason can be reduced, and the strength of the ceramic tube can be enhanced.

Description

Technical Field

[0001] This utility model relates to the technical field of multifunctional flue gas treatment devices, specifically to a multifunctional ceramic fiber filter tube. Background Technology

[0002] Faced with multiple pollutants contained in flue gas, existing conventional technologies usually employ multiple independent treatment units connected in series. In addition, corresponding honeycomb catalysts or particulate catalysts are added to the flue gas treatment process to remove multiple pollutants.

[0003] Conventional multi-unit flue gas treatment processes are inherently complex, require large floor space, and incur high operating costs, resulting in low economic efficiency for pollutant treatment. Ceramic fiber filter tubes, on the other hand, are flue gas treatment elements with both dust removal and denitrification functions. Compared to conventional multi-unit flue gas treatment processes, ceramic fiber filter tubes can remove 99.99% of dust, far exceeding conventional dust removal equipment. Furthermore, denitrification catalysts can be loaded within the ceramic fiber filter tubes, achieving nitrogen oxide removal simultaneously with dust removal. This allows for the integration of dust removal and denitrification units into a single unit, saving floor space and thus gaining widespread application.

[0004] However, existing ceramic fiber filter cartridges only support denitrification catalysts and lack the ability to remove pollutants such as non-methane hydrocarbons (NMHC), CO, and dioxins, thus failing to meet emission standards. Furthermore, water vapor generated during the shutdown and restart of combustion equipment or external water seepage can penetrate the surface of the ceramic fiber filter tube, causing uneven heat transfer between wet and dry areas. This results in uneven heating of the entire ceramic fiber filter tube, which over time can easily lead to cracking or breakage, significantly shortening its service life. In addition, while ceramic tubes are superior to metal tubes in terms of heat resistance, corrosion resistance, and wear resistance, they are susceptible to damage from tensile stress or mechanical and thermal shock. Therefore, there is an urgent need to develop a multifunctional ceramic fiber filter tube to address these technical problems. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a multifunctional ceramic filter tube to solve the aforementioned problems.

[0006] This utility model provides the following technical solution:

[0007] A multifunctional ceramic filter tube includes an outer tube and an inner tube, both of which are open at one end and closed at the other, with the inner tube nested inside the outer tube to form a whole. The outer tube has an outer tube flange, and the inner tube has an inner tube flange. The outer tube flange and the inner tube flange have the same diameter, and both flanges have several interactive groove structures. The outer tube and the inner tube are tightly fitted together through the groove structures. Both the outer tube and the inner tube are made of multi-layer ceramic structure, and each is coated with a different catalyst.

[0008] Furthermore, a ceramic fiber gasket is placed between the outer tube and the groove structure, and the ceramic fiber gasket is compacted bidirectionally by the flange surface of the outer tube and the flange surface of the inner tube.

[0009] Furthermore, the groove on the flange surface of the outer tube is a raised section, while the groove on the flange surface of the inner tube is a recessed section.

[0010] Furthermore, the grooves and protrusions are disposed in the middle and around the periphery of the flange surface, and are evenly distributed along the periphery.

[0011] Furthermore, the inner layer of the outer tube is a waterproof layer, the middle layer is a support layer, and the outer layer is a protective layer; the inner tube is a support layer wrapped by two waterproof layers, inner and outer.

[0012] Furthermore, the protective layer is an expansion pad, and a metal ring is fitted over the expansion pad; the waterproof layer can be configured as a corrugated or pleated structure.

[0013] This utility model has the following beneficial technical effects:

[0014] This utility model's multifunctional ceramic filter tube achieves the function of treating different flue gas pollutants by setting an inner tube and an outer tube, and laying different catalysts on the inner and outer tubes. At the same time, the outer and inner tubes are provided with interactive grooves on their flange surfaces, making the installation of the outer and inner tubes more convenient.

[0015] This utility model of a multifunctional ceramic filter tube consists of a multi-layer structure. The waterproof layer reduces water adsorption, preventing water from easily remaining on the surface of the ceramic fiber filter tube and allowing for rapid removal. This avoids a decrease in mechanical strength caused by water vapor absorption, and also prevents condensation on the surface from clogging the micropores and covering catalytic active sites, thus preventing a decline in filtration and catalytic performance. In the ceramic tube reinforcement structure, an expandable pad and a metal ring are fitted to the outer periphery of the ceramic tube's support layer. The expansion force applies compressive stress to the outer periphery of the ceramic tube, reducing tensile stress caused by mechanical or thermal factors and enhancing the tube's strength. Attached Figure Description

[0016] Figure 1 These are a top view and a front view of the outer tube of a multifunctional ceramic filter tube according to this utility model;

[0017] Figure 2 These are a top view and a front view of the inner tube of a multifunctional ceramic filter tube according to this utility model.

[0018] Figure 3 This is a cross-sectional view of the tube body of a multifunctional ceramic filter tube according to this utility model;

[0019] Figure 4 This is a cross-sectional view of the multi-layer structure of the outer tube of a multifunctional ceramic filter tube according to this utility model;

[0020] Figure 5 This is a cross-sectional view of the multi-layer structure of the inner tube of a multifunctional ceramic filter tube according to this utility model.

[0021] The attached figures are labeled as follows:

[0022] 1. Outer tube; 10. Outer tube flange face; 11. Protrusion; 12. Inner surface of outer tube; 121. Waterproof layer; 122. Support layer; 13. Outer surface of outer tube; 131. Protective layer; 132. Metal ring; 2. Inner tube; 20. Inner tube flange face; 21. Groove; 22. Inner surface of inner tube; 23. Outer surface of inner tube. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Example

[0025] A multifunctional ceramic filter tube includes an outer tube 1 and an inner tube 2. The length of the outer tube 1 and the inner tube 2 is 1000-4000 mm, the outer diameter is 150 mm and 90-100 mm respectively, and the inner diameter is 110 mm and 80-90 mm respectively. The wall thickness of the outer tube 1 and the inner tube 2 is 20 mm and 10 mm respectively.

[0026] Both the outer tube 1 and the inner tube 2 are open at one end and closed at the other, with the inner tube 2 nested inside the outer tube 1 to form a whole. The outer tube 1 is provided with an outer tube flange face 10, and the inner tube 2 is provided with an inner tube flange face 20. The outer tube flange face 10 and the inner tube flange face 20 have the same diameter, and both the outer tube flange face 10 and the inner tube flange face 20 are provided with several interactive groove structures. The outer tube 1 and the inner tube 2 are tightly fitted together through the groove structures. The grooves on the outer tube flange face 10 are protrusions 11, and the grooves on the inner tube flange face 20 are recesses 21. The protrusions 11 and the recesses 21 are located in the middle and around the perimeter of the flange face, and four are evenly distributed along the perimeter.

[0027] The flange diameters of the outer tube 1 and the inner tube 2 are 190-220 mm, and the flange thicknesses are 30-40 mm and 20-30 mm, respectively. The mating depth of the protrusion 11 and the groove 21 is 5-10 mm.

[0028] A ceramic fiber gasket is placed between the protrusion 11 of the outer tube 1 and the groove 21 of the inner tube 2, and the ceramic fiber gasket is compacted bidirectionally by the flange surface 10 of the outer tube and the flange surface 20 of the inner tube.

[0029] The outer tube 1 includes an outer surface 13 and an inner surface 12, and the inner tube 2 includes an outer surface 23 and an inner surface 22. Both the outer and inner surfaces of the outer tube 1 and the inner tube 2 employ a three-layer ceramic structure. The inner tube 2 consists of an inner and outer waterproof layer 121 surrounding a supporting layer 122. The outer tube 1 is composed of an inner waterproof layer 121, a middle supporting layer 122, and an outer protective layer 131. The inner layers of the outer tube 1 and the inner tube 2 are also coated with different catalysts. The outer tube 1 can be coated with an SCR denitrification catalyst, and the inner tube 2 can be coated with a catalyst for removing CO or non-methane hydrocarbons.

[0030] The waterproof layers 121 of both the outer tube 1 and the inner tube 2 are formed by curing a mixture of hydrophobic solution and a hardener. The waterproof layer 121 can be configured as a corrugated or pleated structure. The protective layer 131 of the outer tube 1 is an expansion pad, and a metal ring 132 is fitted over the expansion pad of the outer tube 1. The expansion pad is preferably made of a material with a low coefficient of thermal expansion. Furthermore, as an expansion pad, it is sufficient as long as the expansion allows compressive stress to be applied to the outer circumferential surface of the ceramic tube and can maintain the expanded state after one expansion.

[0031] According to the reinforced structure of the ceramic tube of this utility model, by fitting the expansion pad and the metal ring 132 to the outer periphery of the support layer 122 of the ceramic tube, the tensile stress generated in the ceramic tube due to mechanical or thermal reasons can be reduced, thereby enhancing the strength of the ceramic.

[0032] The embodiments described above merely illustrate specific implementations of this utility model, and while the descriptions are detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A multifunctional ceramic filter tube, comprising an outer tube and an inner tube, both of which are open at one end and closed at the other end, and the inner tube is nested inside the outer tube to form a whole; characterized in that, The outer tube is provided with an outer tube flange surface, the inner tube is provided with an inner tube flange surface, the outer tube flange surface and the inner tube flange surface have the same diameter, and the outer tube flange surface and the inner tube flange surface are provided with a plurality of groove structures that can interact, the outer tube and the inner tube are tightly fitted through the groove structures, the outer tube and the inner tube are both made of a multilayer ceramic structure, and the outer tube and the inner tube are respectively coated with different catalysts.

2. The multifunctional ceramic filter tube according to claim 1, wherein, A layer of ceramic fiber gasket is placed between the groove structures of the outer tube and the inner tube, and the ceramic fiber gasket is compacted in two directions through the outer tube flange surface and the inner tube flange surface.

3. The multifunctional ceramic filter tube of claim 1, wherein, The groove on the flange surface of the outer tube is a protrusion, and the groove on the flange surface of the inner tube is a recess.

4. The multi-functional ceramic filter tube according to claim 3, wherein The recess and the protrusion are arranged in the middle and the periphery of the flange surface and are uniformly distributed along the periphery.

5. The multifunctional ceramic filter tube of claim 1, wherein, The inner layer of the outer tube is a waterproof layer, the middle layer is a support layer, and the outer layer is a protective layer.

6. The multi-functional ceramic filter tube according to claim 1, wherein The inner tube is wrapped with a support layer by two waterproof layers.

7. The multi-functional ceramic filter tube according to claim 5, wherein The protective layer is an expansion pad, and the expansion pad is further sleeved with a metal ring.

8. The multifunctional ceramic filter tube according to claim 5 or 6, characterized in that The waterproof layer can be provided in a corrugated or pleated structure.

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