A sealing device for a coke oven flue gas denitrification module box and a coke oven flue gas denitrification device

Abstract

This utility model relates to the field of coke oven flue gas denitrification technology, and provides a sealing device for a coke oven flue gas denitrification module box and a coke oven flue gas denitrification device. The sealing device for the coke oven flue gas denitrification module box provided in this embodiment includes a base plate disposed between a denitrification module box and a grid steel plate in the coke oven flue gas denitrification device. The outer periphery of the base plate is fixedly connected to the inner wall of the denitrification chamber, and several positioning holes are formed on the base plate corresponding one-to-one with the denitrification module boxes. Through the sealing device for the coke oven flue gas denitrification module box provided in this embodiment, sealing is achieved between the various denitrification module boxes and between the denitrification module boxes and the inner wall of the denitrification chamber. Furthermore, it facilitates the replacement of the denitrification module boxes, simplifying the entire replacement process without the need for electric welding equipment, reducing the number of workers required for replacing the denitrification module boxes, and significantly improving the replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of coke oven flue gas denitrification technology, and in particular to a sealing device for a coke oven flue gas denitrification module box and a coke oven flue gas denitrification device. Background Technology

[0002] Coke oven flue gas contains harmful gases such as sulfur dioxide and nitrogen oxides. It needs to undergo desulfurization and denitrification to ensure that the sulfur dioxide, nitrogen oxides and other harmful gases in the coke oven flue gas meet the emission standards before they can be discharged.

[0003] Coke oven flue gas denitrification is typically carried out in a denitrification chamber. This chamber contains several denitrification module boxes filled with denitrification catalyst. These modules are sealed to the chamber walls or walls using pressure plates to prevent flue gas leakage. Since the denitrification catalyst in each module box has a lifespan of 2-3 years, the modules need to be replaced periodically to maintain denitrification effectiveness. However, the welding of these modules to the chamber walls with pressure plates makes replacement difficult, time-consuming, and labor-intensive, resulting in extremely low replacement efficiency. Utility Model Content

[0004] In view of this, the present invention proposes a sealing device for a denitrification module box of coke oven flue gas and a denitrification device for coke oven flue gas, which solves the technical problems of difficult replacement of denitrification module box and low efficiency in traditional denitrification devices for coke oven flue gas.

[0005] On one hand, this utility model embodiment provides a sealing device for a coke oven flue gas denitrification module box, including: The base plate is located between the denitrification module box and the grid steel plate of the coke oven flue gas denitrification device. The outer periphery of the base plate is fixedly connected to the inner wall of the denitrification chamber of the coke oven flue gas denitrification device. Several positioning holes are opened on the base plate, and the positioning holes are set one-to-one with the denitrification module box.

[0006] In some embodiments of this utility model, the thickness of the substrate of the sealing device for the coke oven flue gas denitrification module box is in the range of 2~20mm.

[0007] In some embodiments of this utility model, the sealing device for the coke oven flue gas denitrification module box further includes: a baffle fixedly connected around the positioning hole, the baffle being adjacent to the inner wall of the denitrification module box.

[0008] In some embodiments of this utility model, the baffle of the coke oven flue gas denitrification module box sealing device is set perpendicular to the base plate of the coke oven flue gas denitrification module box sealing device, and the height of the baffle in the vertical direction is in the range of 1~6cm.

[0009] In some embodiments of this utility model, the baffle of the coke oven flue gas denitrification module box sealing device includes a first sub-plate, a second sub-plate, a third sub-plate, and a fourth sub-plate connected end to end. The positioning hole of the base plate of the coke oven flue gas denitrification module box sealing device includes a first side, a second side, a third side, and a fourth side connected end to end. The first sub-plate is fixedly connected to the first side, the second sub-plate is fixedly connected to the second side, the third sub-plate is fixedly connected to the third side, and the fourth sub-plate is fixedly connected to the fourth side.

[0010] In some embodiments of this utility model, the baffle of the coke oven flue gas denitrification module box sealing device is an integrally formed structure.

[0011] In some embodiments of this utility model, the sealing device for the coke oven flue gas denitrification module box further includes: a sealing element disposed between the baffle and the denitrification module box.

[0012] In some embodiments of this utility model, the sealing element of the coke oven flue gas denitrification module box sealing device includes a sealing ring.

[0013] In some embodiments of this utility model, the substrate of the sealing device for the coke oven flue gas denitrification module box is a stainless steel substrate.

[0014] On the other hand, this utility model embodiment also provides a coke oven flue gas denitrification device, which includes a coke oven flue gas denitrification module box sealing device as described in any embodiment.

[0015] This utility model has at least the following beneficial effects: This utility model provides a sealing device for a coke oven flue gas denitrification module box and a coke oven flue gas denitrification device. The sealing device for the coke oven flue gas denitrification module box provided in this embodiment includes a base plate disposed between the denitrification module box and the grid steel plate of the coke oven flue gas denitrification device. The outer periphery of the base plate is fixedly connected to the inner wall of the denitrification chamber. The base plate has a plurality of positioning holes that correspond one-to-one with the denitrification module box. This sealing device for the coke oven flue gas denitrification module box not only achieves sealing between the various denitrification module boxes and between the denitrification module box and the inner wall of the denitrification chamber, but also makes the denitrification module box easy to replace. The entire replacement process of the denitrification module box is simple, requiring no electric welding equipment, reducing the number of workers required to replace the denitrification module box, and greatly improving the replacement efficiency of the denitrification module box. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other embodiments can be obtained based on these drawings without creative effort.

[0017] Figure 1a This is a schematic diagram of a coke oven flue gas denitrification device in related technologies; Figure 1b for Figure 1a The diagram shows a top view of a coke oven flue gas denitrification device. Figure 2 A schematic diagram of the structure of a sealing device for a coke oven flue gas denitrification module box provided in this embodiment of the utility model; Figure 3a A schematic diagram of the structure of a baffle in a sealing device for a coke oven flue gas denitrification module box provided in an embodiment of this utility model; Figure 3b for Figure 3a Side view of the baffle shown; Figure 4 This is a schematic diagram of the structure of a coke oven flue gas denitrification device provided by this utility model.

[0018] [Explanation of Labels in the Attached Image] 100: Coke oven flue gas denitrification device; 1: Sealing device for coke oven flue gas denitrification module box; 10: Substrate; 11: Positioning hole; 12: Baffle; 121: First sub-board; 122: Second sub-board; 123: Third sub-board; 124: Fourth sub-board; 13: Seal. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described in detail below with reference to specific examples and accompanying drawings.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. For example, terms such as “length,” “width,” “upper,” “lower,” “left,” “right,” “front,” “rear,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer” indicate orientations or positions based on the orientations or positions shown in the accompanying drawings and are merely for ease of description and should not be construed as limiting the invention.

[0021] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this utility model are intended to cover non-exclusive inclusion; the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish different objects, not to describe a specific order. "A plurality of" means two or more, unless otherwise explicitly specified.

[0022] In the description, claims, and accompanying drawings of this utility model, when an element is referred to as "fixed to," "mounted to," "set on," or "connected to" another element, it can be directly or indirectly located on that other element. For example, when an element is referred to as "connected to" another element, it can be directly or indirectly connected to that other element.

[0023] Denitrification of coke oven gas is typically carried out in the denitrification chamber of a coke oven gas denitrification unit. Related technologies, such as... Figure 1a and 1b As shown, the coke oven flue gas denitrification device includes a denitrification chamber, which contains two denitrification sections connected in series from bottom to top. Each denitrification section is equipped with 20-30 denitrification module boxes, each filled with a denitrification catalyst. The denitrification module boxes are mounted on a grid steel plate. Sealing is achieved between the denitrification module boxes and between the denitrification module boxes and the chamber wall using pressure plates welded to the module boxes or chamber wall, thus preventing flue gas leakage from the gaps between the denitrification module boxes and between the denitrification module boxes and the chamber wall. When the coke oven flue gas flows through the denitrification module boxes, the harmful gases in the flue gas pass through the two denitrification sections in the denitrification chamber from bottom to top, thereby achieving denitrification of the coke oven flue gas.

[0024] Since the denitrification catalyst in the denitrification module box has a service life of 2-3 years, the denitrification module box needs to be replaced regularly to ensure the denitrification effect.

[0025] When replacing the denitrification module box in the above-mentioned coke oven flue gas denitrification device, it is necessary to use gas welding to remove the pressure plate, then move the old module box out, install the new module box, and re-weld the new pressure plate. This is time-consuming and labor-intensive. Each replacement of a denitrification chamber requires 15 workers and 5 days of operation. Specialized electric welding workers are also required. It is evident that replacing the denitrification module box in the above-mentioned coke oven flue gas denitrification device is difficult, time-consuming, labor-intensive, and inefficient.

[0026] In view of this, the present invention proposes a sealing device for a denitrification module box of coke oven flue gas and a denitrification device for coke oven flue gas, which solves the technical problems of difficult, time-consuming and labor-intensive replacement of the denitrification module box in the above-mentioned denitrification device for coke oven flue gas, as well as low efficiency.

[0027] The present invention will now be described in detail with reference to the embodiments and accompanying drawings.

[0028] The first aspect of this utility model provides a sealing device for a coke oven flue gas denitrification module box, used in a coke oven flue gas denitrification device. For example... Figure 2 As shown, the sealing device 1 for the coke oven flue gas denitrification module box includes: a base plate 10 located between the denitrification module box and the grid steel plate of the coke oven flue gas denitrification device; the periphery of the base plate 10 is fixedly connected to the inner wall of the denitrification chamber of the coke oven flue gas denitrification device; and a plurality of positioning holes 11 are provided on the base plate 10. The positioning holes 11 are arranged one-to-one with the denitrification module box.

[0029] In this embodiment of the invention, the substrate 10 is located between the denitrification module box and the grid steel plate of the coke oven flue gas denitrification device, and the periphery of the substrate 10 is fixedly connected to the inner wall of the denitrification chamber. There are various methods of fixed connection. For example, the periphery of the substrate 10 can be fixedly connected to the inner wall of the denitrification chamber by welding. Alternatively, an annular mounting portion can be provided on the inner wall of the denitrification chamber, allowing the substrate 10 and the mounting portion to be fixedly connected by a detachable connection method (e.g., threaded connection). For example, several strip-shaped mounting portions can be provided on the inner wall of the denitrification chamber, allowing the substrate 10 and the strip-shaped mounting portions to be fixedly connected by a detachable connection method (e.g., threaded connection).

[0030] In this embodiment of the invention, a plurality of positioning holes 11 are provided on the substrate 10. The number of positioning holes is consistent with the number of denitrification module boxes disposed on the substrate 10. The positioning holes 11 are evenly distributed on the substrate and serve as channels for coke oven flue gas to flow through the denitrification module boxes, enabling the coke oven flue gas to reach the denitrification module boxes through the positioning holes, thereby achieving denitrification of the coke oven flue gas. The coke oven flue gas denitrification module box sealing device provided in this embodiment of the invention not only achieves sealing between each denitrification module box and between the denitrification module box and the inner wall of the denitrification chamber, but also makes the denitrification module boxes easy to replace. The entire denitrification module box replacement process is simple, requiring no electric welding equipment, reducing the number of workers required to replace the denitrification module boxes, and greatly improving the replacement efficiency of the denitrification module boxes.

[0031] In some examples of this utility model, the base plate 10 of the sealing device for the coke oven flue gas denitrification module box provided in this embodiment can be a stainless steel base plate. For example, a corrosion-resistant stainless steel base plate such as 304 stainless steel base plate or 306 stainless steel base plate, thereby extending the service life of the base plate.

[0032] In some examples of this utility model, the thickness of the base plate 10 of the sealing device for the coke oven flue gas denitrification module box provided in the embodiments of this utility model is in the range of 2~20mm, thereby improving the reliability of the base plate. For example, the thickness of the base plate 10 can be any one of 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 10mm and 16mm.

[0033] In some embodiments of this utility model, such as Figure 2 , 3a As shown in Figure 3b, the sealing device for the coke oven flue gas denitrification module box provided in this embodiment of the present invention further includes: a baffle 12 fixedly connected around the positioning hole 11, the baffle 12 being adjacent to the inner wall of the denitrification module box.

[0034] In this embodiment of the utility model, the baffles 12 arranged around the positioning hole 11 can be used to position and fix the denitrification module box, so as to avoid the position of the denitrification module box changing during the denitrification process of coke oven flue gas, thereby affecting the denitrification effect.

[0035] In some examples, the baffle 12 and the positioning hole 11 are fixedly connected by welding around them, thereby improving the reliability of the connection between the baffle 12 and the positioning hole 11 and improving the reliability of the sealing device of the entire coke oven flue gas denitrification module box.

[0036] In some examples of this utility model, the baffle 12 is set perpendicular to the base plate 10, and the height of the baffle 12 in the vertical direction is in the range of 1~6cm. This ensures that the denitrification module box can be easily replaced and also improves the fixing effect of the baffle on the denitrification module box.

[0037] In this embodiment of the invention, the baffle 12 can be vertically welded around the positioning hole 11 on the substrate 10.

[0038] In this embodiment of the invention, the height of the baffle 12 along the vertical direction X is in the range of 1 to 6 cm. For example, the height of the baffle 12 can be any one of 2 cm, 3 cm, 4 cm and 5 cm.

[0039] In some examples, the dimensions of the individual baffles 12 may be the same or different.

[0040] In some examples of this utility model, such as Figure 2 , Figure 3a and 3b As shown, the baffle 12 includes a first sub-plate 121, a second sub-plate 122, a third sub-plate 123, and a fourth sub-plate 124 connected end to end. The positioning hole includes a first side, a second side, a third side, and a fourth side connected end to end. The first sub-plate 121 is fixedly connected to the first side, the second sub-plate 122 is fixedly connected to the second side, the third sub-plate 123 is fixedly connected to the third side, and the fourth sub-plate 124 is fixedly connected to the fourth side.

[0041] In some examples of this utility model, the baffle 12 is an integrally formed structure.

[0042] In some embodiments of this utility model, such as Figure 2The sealing device for the denitrification module box of coke oven gas shown also includes: a sealing element (not shown in the figure) disposed between the baffle 12 and the denitrification module box.

[0043] In some examples of this utility model, the seal 13 is a sealing ring.

[0044] In this embodiment of the invention, by setting a sealing ring between the baffle 12 and the denitrification module box, the fixing effect of the baffle on the denitrification module box can be strengthened, and the denitrification effect of the entire coke oven flue gas denitrification module box sealing device can be further improved.

[0045] Based on the same inventive concept, and according to another aspect of this utility model, an embodiment of this utility model also provides a coke oven flue gas denitrification device. For example... Figure 4 As shown, the coke oven flue gas denitrification device 100 includes the coke oven flue gas denitrification module box sealing device 1 provided in this embodiment of the utility model.

[0046] The coke oven gas denitrification device 100 provided in this embodiment includes a denitrification chamber 2, a coke oven gas denitrification module box sealing device 1, a denitrification module box 3, and a grid steel plate 4 disposed inside the denitrification chamber 2. The coke oven gas denitrification module box sealing device 1 includes a base plate disposed between the denitrification module box and the grid steel plate of the coke oven gas denitrification device, and the periphery of the base plate is fixedly connected to the inner wall of the denitrification chamber, and a plurality of positioning holes are opened on the base plate corresponding one-to-one with the denitrification module box.

[0047] The coke oven flue gas denitrification device 100 provided in this embodiment of the utility model achieves sealing between each denitrification module box and between the denitrification module box and the inner wall of the denitrification chamber through the coke oven flue gas denitrification module box sealing device 1. At the same time, it makes the denitrification module box easy to replace. The entire denitrification module box replacement process is simple, does not require electric welding equipment, reduces the number of workers required to replace the denitrification module box, and greatly improves the replacement efficiency of the denitrification module box.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the 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 application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A coke oven flue gas denitration module box sealing device, characterized in that, include: The base plate is located between the denitrification module box and the grid steel plate of the coke oven flue gas denitrification device. The outer periphery of the base plate is fixedly connected to the inner wall of the denitrification chamber of the coke oven flue gas denitrification device. The base plate is provided with a plurality of positioning holes, which are set one-to-one with the denitrification module box.

2. The sealing device for the coke oven flue gas denitrification module box according to claim 1, characterized in that, The thickness of the substrate is in the range of 2 to 20 mm.

3. The sealing device for the coke oven flue gas denitrification module box according to claim 1, characterized in that, Also includes: A baffle is fixedly connected around the positioning hole, and the baffle is adjacent to the inner wall of the denitrification module box.

4. The sealing device for the coke oven flue gas denitrification module box according to claim 3, characterized in that, The baffle is arranged perpendicular to the substrate, and the height of the baffle in the vertical direction is in the range of 1~6cm.

5. The sealing device for the coke oven flue gas denitrification module box according to claim 3, characterized in that, The baffle includes a first sub-plate, a second sub-plate, a third sub-plate, and a fourth sub-plate connected end to end. The positioning hole includes a first side, a second side, a third side, and a fourth side connected end to end. The first sub-plate is fixedly connected to the first side, the second sub-plate is fixedly connected to the second side, the third sub-plate is fixedly connected to the third side, and the fourth sub-plate is fixedly connected to the fourth side.

6. The sealing device for the coke oven flue gas denitrification module box according to claim 3, characterized in that, The baffle is a one-piece molded structure.

7. The sealing device for the coke oven flue gas denitrification module box according to claim 3, characterized in that, Also includes: A sealing element is disposed between the baffle and the denitrification module box.

8. The sealing device for the coke oven flue gas denitrification module box according to claim 7, characterized in that, include: The sealing element includes a sealing ring.

9. The sealing device for the coke oven flue gas denitrification module box according to any one of claims 1 to 8, characterized in that, The substrate is a stainless steel substrate.

10. A denitrification device for coke oven flue gas, characterized in that, Includes the sealing device for the coke oven flue gas denitrification module box as described in any one of claims 1 to 9.

Images