Nitrogen oxide catalyst modular assembly for degradation

Abstract

The utility model discloses a nitrogen oxide catalyst modularization assembly for degradation, and particularly relates to the technical field of nitrogen oxide treatment, the nitrogen oxide catalyst modularization assembly comprises an internal separation device and a baffle plate, the internal separation device is formed by splicing two inner plates, each inner plate is cut inwards along the center of the wide edge to form a crack, and the baffle plate is arranged on the inner plate. An outer frame body is arranged on the outer side of the internal separation device, the outer frame body is composed of two outer frames, each outer frame is formed by shearing and bending a whole plate, the whole outer frame is divided into a first part, a second part and a third part, and the number of the baffles is two; the baffles on the two sides form a triangular structure in a manner of welding round steel, and the triangular structure plays a key role in the whole device, so that the structural stability can be obviously enhanced, and the condition that the catalytic monomer falls off is effectively prevented; meanwhile, small-diameter round steel is selected, the shielding influence on the catalytic monomer is small, and flue gas can conveniently enter a catalytic monomer pore channel for reaction.

Description

Technical Field

[0001] The utility model relates to the technical field of nitrogen oxide treatment, in particular to a nitrogen oxide catalyst modular component for degradation. Background Art

[0002] The current primary goal of environmental governance is to strengthen air pollution control and improve environmental quality, while continuing to implement total emission control for nitrogen oxides (NOx). NOx treatment involves the reduction of nitrogen oxides to nitrogen gas using NH3 over a catalyst, and this technology has been widely used in coal-fired kilns.

[0003] As the core component of NOx treatment technology, the catalyst module frame assembly has a fundamental and direct impact on the overall treatment effect. Currently, the mainstream catalyst module frame uses a steel module frame, and the components are assembled into a frame by rivets, screws or welding. For example, patent CN209451650U relates to a honeycomb denitrification catalyst module, including a rectangular shell, which is surrounded by two steel plates bent at right angles and welded together. The four inner walls of the rectangular shell are evenly provided with multiple inwardly protruding protrusions. The bottom of the rectangular shell is provided with a bottom folded edge that is folded horizontally inward, and a bottom grid is placed above the bottom folded edge. The upper port of the rectangular shell is provided with an upper folded edge, which includes a top horizontal folded edge formed by the upper edges of the four walls of the shell being folded inward horizontally, and a top vertical folded edge formed by the inner edge of the top horizontal folded edge being folded vertically upward. The outer wall of the top vertical folded edge is flush with the inner edge of the bottom folded edge on the same side, and the height of the protruding shell wall is less than the width of the bottom folded edge. A ceramic cotton pad is provided between each protrusion and the denitration catalyst unit; and ear holes are provided on the top vertical folded edges.

[0004] This type of honeycomb denitrification catalyst module is more suitable for use with multiple catalytic units, but is cumbersome and expensive to operate with fewer catalytic units (less than 16). To address this situation, the present invention provides a modular NOx degradation catalyst assembly that offers excellent packaging, is easy to manufacture and install, and is cost-effective. Utility Model Content

[0005] The purpose of the utility model is to provide a modular catalyst assembly for degrading nitrogen oxides to solve the above-mentioned deficiencies in the technology.

[0006] To achieve the above object, the present utility model provides the following technical solution: A modular component of a nitrogen oxide catalyst for degradation, comprising the internal partition device, an outer frame body and baffles. The internal partition device is formed by splicing two inner plates. Each inner plate is cut inwardly at the center of the wide side to form a crack. The length of the crack is half of the length of the inner plate, and the width is the thickness of the inner plate. The outer frame body consists of two outer frames. Each outer frame is sheared and bent from a whole piece of plate. The whole outer frame is divided into a first part, a second part and a third part. The first part, the second part and the third part are perpendicular to each other in sequence, and the width of the third part is 30 - 100 mm, preferably 30 - 50 mm. There are two baffles, and the two baffles are respectively arranged on both sides inside the outer frame body. Each baffle is a square outer frame, and a cross bar is welded at the center of the square outer frame to form an internal cross fixing structure. Straight bars are welded at the joints of the sides of the square outer frame to form an isosceles right triangle structure. The length of the straight bar is 20 - 40 mm, preferably 30 mm.

[0007] Preferably, the materials used for the internal partition device and the outer frame body are both stainless steel with a thickness of 3 - 5 mm, preferably a thickness of 3 mm. The material used for the baffle is round steel with a diameter of 3 - 5 mm, preferably a diameter of 3 mm.

[0008] Preferably, this modular component can be assembled into a honeycomb catalyst module framework by rivets, screws or welding.

[0009] This modular component is applicable to block catalytic monomers and is arranged in a "field" shape with two layers and two pieces in each layer.

[0010] Through the above, in actual production, the following specific description can be made:

[0011] Prepare a small catalyst module framework component that can install 4 pieces of ********** catalytic monomers with dimensions of 150*150*1000 mm. Use stainless steel with a width of 3 mm as the material to prepare the outer frame through shearing and bending. The length of the outer frame is 1005 mm. The outer frame is divided into three sections: the first part has a width of 311 mm, the second part has a width of 212 mm, and the third part has a width of 30 mm. The included angle between each two sections is 90°. The number of outer frames is two. Use stainless steel with a width of 3 mm as the material to prepare the internal partition device through shearing. The internal partition device has two inner plates. Each inner plate is 1000 mm long and 300 mm wide. Vertically cut inward at the center position of the wide side to form a crack with a width of 3 mm and a length of 500 mm. Use round steel with a diameter of 3 mm as the material to form a square outer frame with a side length of 309 mm through bending and weld it. Add an internal cross fixing structure by welding at the center position of the wide side, and further reinforce by welding round steel at the joints of the sides to form an isosceles right triangle with a right side of 30 mm.

[0012] It should be noted that there is an unclear part in the dimension description of the catalytic monomer in item . I have translated it as "**********" for the time. You can provide the complete and accurate information for a more perfect translation.In addition, the third part of one outer frame is installed on the outside of the first part of the other outer frame and is formed into a rectangular parallelepiped structure by riveting; the cracks of the two inner plates are staggered to form a cross structure and inserted into the outer frame; after the four catalytic monomers are inserted, the baffles on both sides are fixed by welding.

[0013] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0014] 1. The two inner plates are spliced ​​together to form an internal partition device with a specific crack design, which is conducive to providing appropriate channels and spatial distribution for catalyst placement and gas circulation while ensuring a certain structural strength.

[0015] 2. The outer frame, formed by shearing and bending a single piece of sheet material, has good structural integrity, high mechanical strength and stability, and can provide a reliable protection and support framework for the catalyst and other components inside. The vertical design of different parts enables the outer frame to better adapt to stress conditions in different directions.

[0016] 3. The baffles on both sides are constructed into a triangular structure by welding round steel. This triangular structure plays an extremely critical role in the overall device. It can significantly enhance the structural stability and effectively prevent the catalytic monomer from falling. At the same time, the use of small-diameter round steel has less obstruction on the catalytic monomer, making it easier for flue gas to enter the catalytic monomer channel for reaction.

[0017] 4. It is suitable for special situations where the number of catalytic monomers is small. It has low cost and is mainly constructed by splicing, which is easy to disassemble and operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 This is a schematic structural diagram of the inner panel of the present invention;

[0021] Figure 3 This is a schematic structural diagram of the internal partition device of the present invention;

[0022] Figure 4 It is a side view of the outer frame of the utility model;

[0023] Figure 5This is a schematic diagram of the structure of the outer frame of the utility model;

[0024] Figure 6 It is a side view of the baffle of the utility model;

[0025] Figure 7 This is a structural diagram of the baffle of the utility model.

[0026] Description of reference numerals:

[0027] 1. Internal partition; 11. Inner panel; 111. Crack;

[0028] 2. Outer frame; 21. Outer frame; 211. First part; 212. Second part; 213. Third part;

[0029] 3. Baffle; 31. Cross bar; 32. Straight bar. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides Figure 1-Figure 7 The modular assembly of a nitrogen oxide degradation catalyst shown includes an internal partition 1, an outer frame 2, and a baffle 3. The internal partition 1 is formed by splicing two inner plates 11. Each inner plate 11 is cut inward at the center of the wide side to form a crack 111. The length of the crack 111 is half the length of the inner plate 11 and the width is the thickness of the inner plate 11. The outer frame 2 is composed of two outer frames 21. Each outer frame 21 is cut and bent from a whole plate. The outer frame 21 is divided into a first part 211, a second part 212, and a third part 213. The first part 211, the second part 212 and the third part 213 are perpendicular in sequence, and the width of the third part 213 is 30-100 mm, preferably 30-50 mm. Two baffles 3 are provided, and the two baffles 3 are respectively arranged on both sides of the interior of the outer frame 2, and each baffle 3 is a square outer frame. A cross bar 31 is welded at the center of the square outer frame to form an inner cross fixed structure, and straight bars 32 are welded at the connection between the edges of the square outer frame to form an isosceles right triangle structure. The length of the straight bar 32 is 20-40 mm, preferably 30 mm.

[0032] It should be noted that the internal partition device 1 and the outer frame 2 are made of stainless steel with a thickness of 3-5 mm, preferably 3 mm; the baffle 3 is made of round steel with a diameter of 3-5 mm, preferably 3 mm.

[0033] In addition, the modular components can be assembled into a honeycomb catalyst module frame by rivets, screws or welding;

[0034] The modular component is applicable to 4 catalytic monomers, and is arranged in a "field" shape with two layers and two monomers in each layer.

[0035] Through the above, in actual production, the following specific description can be made:

[0036] Prepare a small catalyst module frame component that can install 4 catalytic monomers of 150*150*1000mm. Use 3mm-wide stainless steel as the material, and prepare the outer frame 21 through shearing and bending. The outer frame 21 is 1005mm long; the outer frame 21 is divided into three sections: the first section 211 is 311mm wide, the second section 212 is 317mm wide, and the third section 213 is 30mm wide; the included angle between every two sections is 90°; the number of outer frames 21 is two; use 3mm-wide stainless steel as the material, and prepare the internal partition device 1 through shearing. The internal partition device 1 has two internal plates 11, each internal plate 11 is 1000mm long and 300mm wide; a crack 111 with a width of 3mm and a length of 500mm is vertically cut inward at the center of the wide side; use 3mm-diameter round steel as the material, and form a square outer frame with a side length of 309mm through bending and weld it; at the center of the wide side, an internal cross fixing structure is added by welding, and at the connection of the sides, an isosceles right triangle with a right-angled side of 30mm is formed by welding round steel for further reinforcement.

[0037] In addition, install the third section 213 of one outer frame 21 on the outside of the first section 211 of another outer frame 21, and form a cuboid-like structure by riveting; stagger the cracks 111 of the two internal plates 11 to form a cross structure and insert it into the outer frame body 2; after inserting 4 catalytic monomers, fix the two side baffles 3 by welding to complete.

[0038] Only some exemplary embodiments of the present invention are described above by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A modular catalyst assembly for degrading nitrogen oxides, characterized in that: include: An internal partition device (1), the internal partition device (1) being formed by splicing two inner plates (11), each inner plate (11) being cut inwardly at the center of its wide side to form a crack (111), and an outer frame (2) being provided on the outer side of the internal partition device (1); The outer frame (2) is composed of two outer frames (21), each of the outer frames (21) is formed by shearing and bending a whole plate, and the outer frame (21) is divided into a first part (211), a second part (212) and a third part (213); Baffles (3) are provided in two pieces and are respectively arranged on both sides of the interior of the outer frame (2), and each of the baffles (3) is a square outer frame, with a cross bar (31) welded at the center of the square outer frame.

2. The modular catalyst assembly for degrading nitrogen oxides according to claim 1, characterized in that: The length of the crack (111) is half the length of the inner plate (11), and the width is the thickness of the inner plate (11).

3. The modular catalyst assembly for degrading nitrogen oxides according to claim 1, characterized in that: The first part (211), the second part (212) and the third part (213) are vertical in sequence, and the width of the third part (213) is 30-100 mm.

4. The modular catalyst assembly for degrading nitrogen oxides according to claim 1, characterized in that: Straight bars (32) are welded at the connection points between the edges of the square outer frame to form an isosceles right triangle structure.

5. The modular catalyst assembly for degrading nitrogen oxides according to claim 4, characterized in that: The length of the straight strip (32) is 20-40 mm.

6. The modular catalyst assembly for degrading nitrogen oxides according to claim 5, characterized in that: The internal partition device (1) and the outer frame (2) are both made of stainless steel with a thickness of 3-5 mm, and the baffle (3) is made of round steel with a diameter of 3-5 mm.

Images