Cu-SSZ-13 catalyst module sealing device for treating tail gas of diesel engine

Abstract

The utility model belongs to the technical field of sealing devices, and discloses a Cu-SSZ-13 catalyst module sealing device for treating tail gas of a diesel engine, which comprises a reactor, a plurality of catalyst reaction modules are arranged in the reactor, edge sealing pieces are arranged between the inner wall of the reactor and the outer walls of the catalyst reaction modules, and the inner wall of the reactor and the outer wall of the catalyst reaction module are sealed by the edge sealing pieces. An inner sealing piece is arranged between the outer walls of every two adjacent catalyst reaction modules, each edge sealing piece comprises an edge sealing first part, an edge sealing second part and an edge sealing third part, each edge sealing first part is transversely installed on the top wall of the corresponding catalyst reaction module, a certain included angle is formed between each edge sealing second part and the corresponding edge sealing first part, and each edge sealing third part is transversely installed on the top wall of the corresponding catalyst reaction module. According to the utility model, the gaps between the reactor and the catalyst reaction modules are sealed by arranging the edge sealing pieces, and the gaps between the adjacent catalyst reaction modules are sealed by utilizing the inner sealing pieces, so that the flue gas short circuit can be effectively prevented, the treatment efficiency of nitrogen oxides is improved, and the leakage of ammonia is reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to sealing device technical field, concretely relates to a Cu-SSZ-13 catalyst module sealing device for treating diesel engine tail gas. BACKGROUND

[0002] A sealing device is a device or system used to prevent the leakage of gases, liquids, or other media. It is widely used in various industrial fields to ensure the normal operation and safety of equipment.

[0003] In the application number 201610809373.2, a SCR denitration catalyst module sealing device is disclosed. The sealing device is installed between the SCR denitration reactor catalyst modules of a certain power plant 300MW unit. The sealing device includes a side seal with a length equal to the length of the SCR denitration reactor catalyst module, and an angle seal that can cover the gap at the intersection of the adjacent four SCR denitration catalyst modules. In the above-mentioned, the side seal can prevent the escape of flue gas from the gap between adjacent modules. This design can indeed reduce flue gas leakage to some extent. However, the gap between the module and the inner wall of the reactor is ignored. If there is a gap between the module and the inner wall of the reactor and no corresponding sealing measures, flue gas may escape directly to the external environment through these gaps. SUMMARY

[0004] The purpose of the utility model is to provide a Cu-SSZ-13 catalyst module sealing device for treating diesel engine tail gas, to solve the problem of gaps between the module and the inner wall of the reactor and no corresponding sealing measures, flue gas may escape directly to the external environment.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a Cu-SSZ-13 catalyst module sealing device for treating diesel engine tail gas, comprising: a reactor, a plurality of catalyst reaction modules are installed in the reactor, a side seal is provided between the inner wall of the reactor and the outer wall of the catalyst reaction module, an inner seal is provided between the outer walls of the adjacent two catalyst reaction modules, the side seal includes a side seal first part, a side seal second part and a side seal third part, the side seal first part is horizontally installed on the top wall of the catalyst reaction module, the side seal second part is at a certain angle with the side seal first part, the side seal third part is vertically installed on the side seal second part, and the side seal third part can be welded with the inner wall of the reactor.

[0006] Further, the surface of the side seal first part below the side seal second part is inclined, and the low end of the inclined surface is close to the gap formed by the reactor and the catalyst reaction module;

[0007] Further, the material of the edge seal and the inner seal is stainless steel, and the thickness of the material is 3-5mm.

[0008] By the above technical solution:

[0009] In use, the sealing device contains 4 Cu-SSZ-13 catalyst reaction modules arranged in two rows and two columns. The catalyst reaction module has a length of 1000mm, a width of 500mm, and a height of 1000mm; and the reactor has an internal length of 2100mm and an internal width of 1100mm. The sealing device is composed of an edge seal and an inner seal. The edge seal and the inner seal are both made of stainless steel plate as raw material and are processed by shearing and bending. The first part of the edge seal forms a 45° angle with the second part of the edge seal, and the length of the first part of the edge seal is 20mm. When installed, the lower end face of the first part of the edge seal is welded to the top wall of the catalyst reaction module, and the third part of the edge seal is welded to the inner wall of the reactor. The third part of the edge seal can increase the contact area of the edge seal and the inner wall of the reactor, provide more uniform sealing pressure, ensure higher adhesion of the edge seal on the inner wall of the reactor, and thus make the second part of the edge seal completely cover the gap formed by the reactor and the catalyst reaction module. The inclined first part of the edge seal is conducive to the backflow of flue gas into the gap and is not easy to form dust on the first part of the edge seal.

[0010] The inner seal includes a first inner seal part, a second inner seal part, a third inner seal part, a fourth inner seal part, and a fifth inner seal part. The first inner seal part is transversely installed on the top wall of the catalyst reaction module, the second inner seal part forms an angle with the first part of the edge seal, the fourth inner seal part is transversely installed on the top wall of the adjacent catalyst reaction module, the fifth inner seal part is vertically attached to the side wall of the catalyst reaction module, the fourth inner seal part and the fifth inner seal part are connected at a right angle, the third inner seal part is arranged at an angle with the fourth inner seal part, and the top of the second inner seal part and the third inner seal part are connected at an angle.

[0011] Preferably, the surface of the first inner seal part below the second inner seal part is inclined, and the low end of the inclined surface is close to the gap formed by the two adjacent catalyst reaction modules.

[0012] By the above technical solution:

[0013] In use, the included angle between the inner sealing first part and the inner sealing second part is 45°, and the length of the inner sealing first part is 20 mm; the included angle between the inner sealing third part and the inner sealing fourth part is 45°, and the length of the inner sealing fourth part is 20 mm, and the length of the inner sealing fifth part is also 20 mm. In installation, the inner sealing first part is welded on the top wall of the catalyst reaction module, the inner sealing fourth part is welded on the top wall of the adjacent catalyst reaction module, and the inner sealing fifth part is welded on the side wall of the catalyst reaction module. Such installation mode enables the inner sealing second part and the inner sealing third part to completely cover the gap formed by the two adjacent catalyst reaction modules. At the same time, the inclined inner sealing first part can further promote the flue gas to flow into the gap, and it is not easy to form dust on the inner sealing first part, and high-temperature-resistant sealing strips can be installed between each sealing member, reactor and catalyst reaction module, further enhancing the sealing performance of the device.

[0014] After the sealing members are installed, the side sealing members can seal the gap formed between the reactor and the catalyst reaction module, and the inner sealing members seal the gap between the adjacent catalyst reaction modules. When the flue gas flows through the top of the sealing device, due to its good sealing performance, it can effectively prevent the flue gas from forming a short circuit between the reactor and the catalyst reaction module and between the adjacent catalyst reaction modules. This excellent sealing performance ensures that the flue gas flows along the predetermined path, avoiding direct leakage through the gap, thereby improving the overall efficiency and safety of the system. Good sealing performance can ensure that the flue gas flows fully in the system, avoiding energy loss, reducing harmful gas leakage, and reducing potential risks to the environment and operating personnel's health. Effective sealing can also reduce the corrosion and wear of equipment by flue gas, reducing maintenance costs and downtime. The device has small resistance, and the flue gas is uniformly guided from both sides, so it will not form dust. After mixing with ammonia, the flue gas enters the catalyst layer and undergoes a catalytic reduction reaction, and the clean flue gas flows out of the catalyst bed.

[0015] Preferably, the central intersection formed by the four catalyst reaction modules, the transverse inner sealing member penetrates the intersection of the central intersection, and the longitudinal inner sealing member is divided into two sections and connected with the transverse inner sealing member;

[0016] A first sealing block is installed on the central intersection formed by the four catalyst reaction modules, a first fitting groove is formed on the first sealing block, and the first fitting groove is matched with the inner sealing member connected with the intersection. The first fitting groove can be formed by reverse molding after the two inner sealing members are connected vertically;

[0017] A second sealing block is installed at the connection between the inner sealing member and the side sealing member, a second fitting groove is formed on the second sealing block, and the second fitting groove is matched with the connection between the inner sealing member and the side sealing member. The second fitting groove can be formed by reverse molding after the inner sealing member and the side sealing member are connected vertically.

[0018] By the above technical solutions:

[0019] In use, the transverse sealing member penetrates through the entire intersection, and can build a complete sealing barrier to effectively prevent smoke leakage. The longitudinal sealing member is divided into two sections and connected with the transverse sealing member, and this design can increase the flexibility and adaptability of the sealing. The sectional design enables the sealing member to provide uniform pressure distribution in different directions, thereby improving the reliability of the sealing. The first sealing block strengthens the sealing of the connection between the two inner sealing members, and even if there is a small gap at the connection between the two inner sealing members, the first sealing block can effectively fill the gap by means of additional sealing material and structure, thereby preventing micro-leakage.

[0020] Compared with the prior art, the utility model has the beneficial effects that:

[0021] (1) The utility model discloses a sealing device for sealing the gap between the reactor and the catalyst reaction module, and the gap between the adjacent catalyst reaction modules is sealed by the inner sealing member. The sealing device has simple structure, is easy to process and install, and has low cost. It has good sealing effect, small resistance, is not easy to accumulate dust, can effectively prevent smoke short circuit, can improve the treatment efficiency of nitrogen oxides, and reduce the leakage of ammonia. In addition, the device can be customized according to different engineering and catalyst module size to meet specific needs.

[0022] (2) The utility model discloses a first sealing block and a second sealing block are arranged to strengthen the sealing of the connection between the two inner sealing members and the connection between the inner sealing member and the edge sealing member. Even if there is a small gap at the connection between the two sealing members, the sealing block can effectively fill the gap by means of additional sealing material and structure, thereby preventing micro-leakage and ensuring the reliability of the entire sealing system. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a structural schematic view of the utility model;

[0024] Figure 2 It is a sectional view of the utility model;

[0025] Figure 3 It is a structural schematic view of the reactor of the utility model;

[0026] Figure 4 It is a structural schematic view of the first sealing block and the second sealing block of the utility model;

[0027] Figure 5 It is an enlarged view of A part in the utility model; Figure 2 ​

[0028] Figure 6 For Figure 2 the B part of the enlarged view in the figure;

[0029] In the figure: 1, reactor; 2, catalyst reaction module; 3, edge seal first part; 4, edge seal second part; 5, edge seal third part; 6, inner seal first part; 7, inner seal second part; 8, inner seal third part; 9, inner seal fourth part; 10, inner seal fifth part; 11, first sealing block; 12, first fitting groove; 13, second sealing block; 14, second fitting groove. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0031] Please refer to Figures 1-6 The utility model provides the following technical scheme: a kind of Cu-SSZ-13 catalyst module sealing device for processing diesel engine tail gas, comprising: reactor 1, multiple catalyst reaction modules 2 are installed in reactor 1, edge seal is equipped between the inner wall of reactor 1 and the outer wall of catalyst reaction module 2, inner seal is equipped between the outer wall of adjacent two catalyst reaction modules 2, and edge seal includes edge seal first part 3, edge seal second part 4 and edge seal third part 5, edge seal first part 3 is transversely installed on the top wall of catalyst reaction module 2, edge seal second part 4 is at a certain angle with edge seal first part 3, edge seal third part 5 is vertically installed on edge seal second part 4, and edge seal third part 5 can be welded with the inner wall of reactor 1.

[0032] Further, the surface of edge seal first part 3 below edge seal second part 4 is inclined, and the low end of the inclined surface is close to the gap formed by reactor 1 and catalyst reaction module 2;

[0033] Further, the materials of edge seal and inner seal are stainless steel, and the thickness of these materials is 3-5mm.

[0034] Through the above technical scheme:

[0035] In use, the sealing device comprises four Cu-SSZ-13 catalyst reaction modules 2 arranged in two rows and two columns. The catalyst reaction module 2 is 1000 mm long, 500 mm wide and 1000 mm high; the reactor 1 is 2100 mm long and 1100 mm wide inside. The sealing device is composed of an edge seal and an inner seal, both of which are made of stainless steel plate as raw material and processed by shearing and bending. The edge seal first part 3 forms a 45° angle with the edge seal second part 4, and the length of the edge seal first part 3 is 20 mm. When installed, the lower end face of the edge seal first part 3 is welded to the top wall of the catalyst reaction module 2, and the edge seal third part 5 is welded to the inner wall of the reactor 1. The edge seal third part 5 can increase the contact area of the edge seal with the inner wall of the reactor 1, provide more uniform sealing pressure, ensure higher fit of the edge seal on the inner wall of the reactor 1, and thus make the edge seal second part 4 completely cover the gap formed by the reactor 1 and the catalyst reaction module 2. The inclined edge seal first part 3 is beneficial to the backflow of flue gas into the gap and is not easy to form dust on the edge seal first part 3.

[0036] Please refer to Figures 1-6 As shown in the figure, the inner seal includes an inner seal first part 6, an inner seal second part 7, an inner seal third part 8, an inner seal fourth part 9 and an inner seal fifth part 10. The inner seal first part 6 is transversely installed on the top wall of the catalyst reaction module 2, the inner seal second part 7 forms an angle with the edge seal first part 3, the inner seal fourth part 9 is transversely installed on the top wall of the adjacent catalyst reaction module 2, the inner seal fifth part 10 is vertically attached to the side wall of the catalyst reaction module 2, the inner seal fourth part 9 and the inner seal fifth part 10 are connected at right angles, the inner seal third part 8 is arranged at an angle with the inner seal fourth part 9, and the top of the inner seal second part 7 and the inner seal third part 8 are connected at an angle.

[0037] Further, the surface of the inner seal first part 6 below the inner seal second part 7 is inclined, and the low end of the inclined surface is close to the gap formed by the two adjacent catalyst reaction modules 2.

[0038] Through the above technical solution:

[0039] When in use, the included angle between the inner sealing first part 6 and the inner sealing second part 7 is 45°, and the length of the inner sealing first part 6 is 20 mm; the included angle between the inner sealing third part 8 and the inner sealing fourth part 9 is 45°, and the length of the inner sealing fourth part 9 is 20 mm, and the length of the inner sealing fifth part 10 is also 20 mm. When installing, the inner sealing first part 6 is welded on the top wall of the catalyst reaction module 2, the inner sealing fourth part 9 is welded on the top wall of the adjacent catalyst reaction module 2, and the inner sealing fifth part 10 is welded on the side wall of the catalyst reaction module 2. Such an installation mode enables the inner sealing second part 7 and the inner sealing third part 8 to completely cover the gap formed by the two adjacent catalyst reaction modules 2. At the same time, the inclined inner sealing first part 6 can further promote the backflow of flue gas into the gap, and it is not easy to form dust accumulation on the inner sealing first part 6, and high-temperature-resistant sealing strips can be installed between each sealing piece, the reactor 1 and the catalyst reaction module 2, further enhancing the sealing performance of the device.

[0040] After the sealing pieces are installed, the side sealing pieces can seal the gap formed between the reactor 1 and the catalyst reaction module 2, and the inner sealing pieces seal the gap between the adjacent catalyst reaction modules 2. When the flue gas flows through the top of the sealing device, due to its good sealing performance, it can effectively prevent the flue gas from forming a short circuit between the reactor 1 and the catalyst reaction module 2, and between the adjacent catalyst reaction modules 2. This excellent sealing performance ensures that the flue gas flows along the predetermined path, avoiding direct leakage through the gap, thereby improving the overall efficiency and safety of the system. Good sealing performance can ensure that the flue gas flows fully in the system, avoiding energy loss, reducing harmful gas leakage, and reducing potential risks to the environment and operating personnel's health. Effective sealing can also reduce the corrosion and wear of equipment by flue gas, reducing maintenance costs and downtime. The device has small resistance, and the flue gas is uniformly guided from both sides, so it will not form dust. After mixing with ammonia, the flue gas enters the catalyst layer and undergoes a catalytic reduction reaction, and the clean flue gas flows downward and leaves the catalyst bed.

[0041] Please refer to Figures 1-4 As shown in the figure, the central intersection formed by the four catalyst reaction modules 2, the transverse inner sealing piece penetrates the intersection of the central intersection, and the longitudinal inner sealing piece is divided into two sections and connected with the transverse inner sealing piece.

[0042] Further, a first sealing block 11 is installed at the central intersection formed by the four catalyst reaction modules 2, a first matching groove 12 is formed on the first sealing block 11, and the first matching groove 12 is matched with the inner sealing piece at the intersection connection. The first matching groove 12 can be formed by reverse molding after the two inner sealing pieces are connected vertically;

[0043] The connecting part of the inner sealing member and the edge sealing member is provided with a second sealing block 13, and the second sealing block 13 is provided with a second matching groove 14, which is matched with the connecting part of the inner sealing member and the edge sealing member, and the second matching groove 14 can be formed by reverse molding after the inner sealing member and the edge sealing member are vertically connected.

[0044] Through the above technical scheme:

[0045] In use, the transverse sealing member penetrates through the entire intersection, and can build a complete sealing barrier, effectively preventing smoke leakage. The longitudinal sealing member is divided into two sections and connected with the transverse sealing member, and this design can increase the flexibility and adaptability of the sealing. The sectional design enables the sealing member to provide uniform pressure distribution in different directions, thereby improving the reliability of the sealing. The first sealing block 11 strengthens the sealing of the connecting part of the two inner sealing members, and even if there is a small gap in the connecting part of the two inner sealing members, the first sealing block 11 can effectively fill the gap by means of additional sealing material and structure, preventing micro-leakage. The second sealing block 13 strengthens the sealing of the connecting part of the inner sealing member and the edge sealing member, which can effectively prevent cross leakage of smoke between the inner sealing member and the edge sealing member, and ensure the reliability of the entire sealing system.

[0046] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust, characterized by, The utility model relates to a reactor (1) is installed with multiple catalyst reaction module (2) in it, and the inner wall of reactor (1) and the outer wall of catalyst reaction module (2) are equipped with edge seal between, and the outer wall of adjacent two catalyst reaction module (2) is equipped with inner seal between, and the edge seal includes edge seal first part (3), edge seal second part (4) and edge seal third part (5), and edge seal first part (3) is installed on the top wall of catalyst reaction module (2) laterally, and edge seal second part (4) is at a certain angle with edge seal first part (3), and edge seal third part (5) is installed on edge seal second part (4) vertically, and edge seal third part (5) can be welded with the inner wall of reactor (1) and fit. The surface of edge seal first part (3) below edge seal second part (4) is inclined, and the low end of the inclined surface is close to the gap formed by reactor (1) and catalyst reaction module (2).

2. A Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 1, wherein: The inner seal includes inner seal first part (6), inner seal second part (7), inner seal third part (8), inner seal fourth part (9) and inner seal fifth part (10), and inner seal first part (6) is installed on the top wall of catalyst reaction module (2) laterally, and inner seal second part (7) is at a certain angle with edge seal first part (3), and inner seal fourth part (9) is installed on the top wall of adjacent catalyst reaction module (2) laterally, and inner seal fifth part (10) is vertically fitted on the side wall of catalyst reaction module (2), and inner seal fourth part (9) and inner seal fifth part (10) are connected at right angles, and inner seal third part (8) is arranged at an angle with inner seal fourth part (9), and the top of inner seal second part (7) and inner seal third part (8) is connected at an angle.

3. The Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 1, wherein: The surface of inner seal first part (6) below inner seal second part (7) is inclined, and the low end of the inclined surface is close to the gap formed by two adjacent catalyst reaction module (2).

4. The Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 3, wherein: The central intersection formed by four catalyst reaction module (2) is connected by the whole transverse inner seal, and the longitudinal inner seal is divided into two sections and connected with the transverse inner seal.

5. The Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 1, wherein: A first sealing block (11) is installed on the central intersection formed by four catalyst reaction module (2), and a first matching groove (12) is formed in the first sealing block (11), and the first matching groove (12) is matched with the inner seal connected with the intersection.

6. A Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 5, wherein: A second sealing block (13) is installed at the connection of the inner seal and the edge seal, and a second matching groove (14) is formed in the second sealing block (13), and the second matching groove (14) is matched with the connection of the inner seal and the edge seal.

7. A Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 6, wherein: The materials of the edge seal and the inner seal are stainless steel, and the thickness of the materials is 3-5 mm.

8. The Cu-SSZ-13 catalyst module sealing device for treating diesel exhaust according to claim 1, wherein: ​

Images