A heat preservation device for an ultra-low temperature denitration catalyst reactor

Abstract

The utility model relates to the technical field of heat preservation device, disclose a kind of heat preservation device for ultralow temperature denitration catalyst reactor, comprising: heat preservation device main body, split type doctor structure and displacement structure.The utility model has the following advantages and effects: by being provided with split type doctor structure and displacement structure, split type doctor structure can be through detachable structure, can not cause hindrance when the first sealing cover and second sealing cover are separated to overhaul electric heating wire assembly, split type doctor structure is connected by with displacement structure, can be adhered on the outer wall of first sealing cover and second sealing cover and move, to realize adhered type cleaning to the heat preservation cotton adhered to the surface of first sealing cover and second sealing cover, this mode can remove the aging heat preservation cotton and process the debris adhered to the outside of first sealing cover and second sealing cover, improve the efficiency of heat preservation cotton replacement work.

Description

Technical Field

[0001] This utility model relates to the field of heat preservation device technology, and in particular to a heat preservation device for an ultra-low temperature denitrification catalyst reactor. Background Technology

[0002] SCR denitration catalysts have an optimal activity temperature range (typically 280–420°C). Temperatures that are too low will decrease their activity and reduce denitration efficiency; while temperatures that are too high may cause catalyst sintering and damage. Although ultra-low temperature denitration catalysts may have a lower optimal reaction temperature window than traditional catalysts, they still need to be maintained within a stable and specific temperature range to operate efficiently. This is achieved by wrapping electric heating wires around the outside of pipes or reactors, using electricity to compensate for heat loss. A metal shell is then placed over the heating wires to retain the heat generated inside the metal shell. Finally, insulation cotton is adhesively wrapped around the outside of the metal shell to reduce the rate of heat loss within the metal shell.

[0003] Because the insulation cotton is tightly bonded to the outside of the metal shell through adhesive, it becomes brittle as it ages, leading to a decrease in insulation efficiency. Therefore, the insulation cotton on the surface of the metal shell needs to be replaced to continuously maintain the effective temperature of the interior. Since the insulation cotton is fixed by adhesive, the brittle, aged insulation cotton is easily broken during manual handling and cleaning, leaving some residue adhering to the surface of the metal shell. After the insulation cotton is removed, it is necessary to inspect and clean the adhesive residue around the metal shell, significantly increasing the time required for insulation cotton replacement. Utility Model Content

[0004] The purpose of this invention is to provide a heat preservation device for an ultra-low temperature denitrification catalyst reactor, which can solve the problems mentioned in the background art.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution: a heat preservation device for an ultra-low temperature denitrification catalyst reactor, comprising: a heat preservation device body, a split-type scraper structure and a displacement structure, wherein the heat preservation device body includes an electric heating wire assembly, a first sealing cover, a second sealing cover and heat preservation cotton, the split-type scraper structure is disposed outside the first sealing cover and the second sealing cover, the displacement structure is disposed on the outer wall of the first sealing cover and the second sealing cover, and the displacement structure is connected to the split-type scraper structure.

[0006] By adopting the above technical solution, the operation can be carried out quickly when the insulation cotton needs to be replaced.

[0007] A further feature of this invention is that the electric heating wire assembly is arranged around the outer wall of the reactor, the first sealing cover and the second sealing cover are respectively attached to both sides of the outer wall of the reactor, the first sealing cover and the second sealing cover are connected by bolts, the electric heating wire assembly is arranged in the gap between the first sealing cover, the second sealing cover and the reactor, and heat insulation cotton is adhered to the outer walls of the first sealing cover and the second sealing cover.

[0008] By adopting the above technical solution, the reactor can be effectively kept warm.

[0009] A further feature of this invention is that the detachable scraper structure includes a first scraper attached to the outer wall of the first sealing cover and a second scraper attached to the outer wall of the second sealing cover. Both the first and second scrapers are semi-circular arc-shaped. A connecting shaft is welded to the outer wall of both ends of the second scraper. A fixing block is rotatably mounted on the connecting shaft. A threaded rod is welded to the outer wall of the fixing block. A handle is rotatably mounted on the threaded rod. A rectangular groove is formed on the outer wall of both ends of the first scraper. The internal dimensions of the rectangular groove are adapted to the diameter of the threaded rod. The threaded rod is located inside the rectangular groove, and the handle is attached to the outer wall of both ends of the first scraper.

[0010] By adopting the above technical solution, the insulation cotton can be scraped off by moving the material attached to the outer walls of the first and second sealing covers.

[0011] A further feature of this invention is that the displacement structure includes mounting blocks welded to the top and bottom of the outer walls of the first and second sealing covers, respectively. A bearing is provided inside the mounting block welded to the outer wall of the second sealing cover. A guide rod is welded to the outer wall of the first sealing cover, and a threaded screw is provided inside the bearing of the mounting block on the outer wall of the second sealing cover. A first connecting block is slidably mounted on the guide rod, and a second connecting block is threadedly connected to the threaded screw. The first connecting block is welded to the outer wall of the first scraper, and the second connecting block is welded to the outer wall of the second scraper.

[0012] By adopting the above technical solution, a split-type scraper structure can be provided, resulting in a change in position.

[0013] The beneficial effects of this utility model are as follows: By providing a detachable scraper structure and a displacement structure, the detachable scraper structure can be separated from the first sealing cover and the second sealing cover to inspect the electric heating wire assembly without causing obstruction. The detachable scraper structure, connected with the displacement structure, can move along the outer wall of the first sealing cover and the second sealing cover, thereby achieving a close-fitting cleaning of the insulation cotton adhering to the surface of the first sealing cover and the second sealing cover. This method can remove the aged insulation cotton and treat the debris adhering to the outside of the first sealing cover and the second sealing cover together, improving the efficiency of the insulation cotton replacement work. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a top-view three-dimensional structural diagram of the present invention;

[0016] Figure 2 For the present utility model Figure 1 A magnified view of the three-dimensional structure at point A;

[0017] Figure 3 For the present utility model Figure 1 Schematic diagram of the three-dimensional unfolded structure;

[0018] Figure 4 This is a three-dimensional structural diagram of the present invention viewed from below.

[0019] In the picture,

[0020] 1. Electric heating wire assembly;

[0021] 2. First sealing cover;

[0022] 3. Second sealing cover;

[0023] 4. Split-type scraper structure; 401. No. 1 scraper; 402. No. 2 scraper; 403. Connecting shaft; 404. Fixing block; 405. Threaded rod; 406. Handle; 407. Rectangular groove;

[0024] 5. Displacement structure; 501. Mounting block; 502. Guide rod; 503. Threaded screw; 504. First connecting block; 505. Second connecting block;

[0025] 6. Thermal insulation cotton. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] Reference Figure 1-4 A thermal insulation device for an ultra-low temperature denitrification catalyst reactor includes: a main body of the thermal insulation device, a split-type scraper structure 4, and a displacement structure 5. The main body of the thermal insulation device includes an electric heating wire assembly 1, a first sealing cover 2, a second sealing cover 3, and thermal insulation cotton 6. The electric heating wire assembly 1 is arranged around the outer wall of the reactor. The first sealing cover 2 and the second sealing cover 3 are respectively attached to both sides of the outer wall of the reactor and are connected by bolts. The electric heating wire assembly 1 is disposed in the gap between the first sealing cover 2, the second sealing cover 3, and the reactor. Thermal insulation cotton 6 is bonded to the outer wall of the first sealing cover 2 and the second sealing cover 3. The split-type scraper structure 4 is disposed outside the first sealing cover 2 and the second sealing cover 3. The displacement structure 5 is disposed on the outer wall of the first sealing cover 2 and the second sealing cover 3 and is connected to the split-type scraper structure 4.

[0028] The split-type scraper structure 4 includes a first scraper 401 attached to the outer wall of the first sealing cover 2 and a second scraper 402 attached to the outer wall of the second sealing cover 3. Both the first scraper 401 and the second scraper 402 are semi-circular arc-shaped. A connecting shaft 403 is welded to the outer walls of both ends of the second scraper 402. A fixing block 404 is rotatably mounted on the connecting shaft 403. A threaded rod 405 is welded to the outer wall of the fixing block 404. A handle 406 is rotatably mounted on the threaded rod 405. A rectangular groove 407 is formed on the outer walls of both ends of the first scraper 401. The internal dimensions of the rectangular groove 407 are adapted to the diameter of the threaded rod 405. The threaded rod 405 is located inside the rectangular groove 407, and the handle 406 is attached to the outer walls of both ends of the first scraper 401.

[0029] The displacement structure 5 includes mounting blocks 501 welded to the top and bottom of the outer walls of the first sealing cover 2 and the second sealing cover 3, respectively. The mounting block 501 welded to the outer wall of the second sealing cover 3 has a bearing inside. The mounting block 501 welded to the outer wall of the first sealing cover 2 has a guide rod 502 inside and a threaded rod 503 set in the bearing of the mounting block 501 on the outer wall of the second sealing cover 3. A first connecting block 504 is slidably set on the guide rod 502. A second connecting block 505 is threadedly connected to the threaded rod 503. The first connecting block 504 is welded to the outer wall of the first scraper 401 and the second connecting block 505 is welded to the outer wall of the second scraper 402.

[0030] In this invention, the first sealing cover 2 and the second sealing cover 3 are connected by bolts, thereby locking and fixing them to the outer wall of the reactor. At this time, the electric heating wire assembly 1 can be activated to provide stable reactor temperature. The heat generated is stored by the heat insulation cotton 6 outside the first sealing cover 2 and the second sealing cover 3. When the aging heat insulation cotton 6 needs to be replaced periodically, the split scraper structure 4 is structurally connected. The displacement structure 5 can drive the split scraper structure 4 to separate the heat insulation cotton 6 outside the first sealing cover 2 and the second sealing cover 3 during the displacement process.

[0031] When it is necessary to fix scraper 401 and scraper 402 together, the fixing block 404 rotates through the connecting shaft 403. During the rotation, the threaded rod 405 on the fixing block 404 moves into the rectangular groove 407 of scraper 401. The handle 406 connected to the threaded rod 405 is then rotated. During the threaded rotation displacement, the handle 406 presses against the outer wall of scraper 401, thus providing a fixed connection between scraper 401 and scraper 402.

[0032] At this time, scraper 401 and scraper 402 are connected to the first connecting block 504 and the second connecting block 505 respectively. During the rotation of the threaded screw 503 in the mounting block 501, the threaded second connecting block 505 can be moved. And through the sliding of the first connecting block 504 on the guide rod 502, the stability of scraper 401 and scraper 402 during movement is provided. During the movement of scraper 401 and scraper 402 against the outer wall of the first sealing cover 2 and the second sealing cover 3, the insulation cotton 6 adhering to the outer wall of the first sealing cover 2 and the second sealing cover 3 is cleaned and separated.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat preservation device for an ultra-low temperature denitrification catalyst reactor, characterized in that, include: The main body of the heat preservation device includes an electric heating wire assembly (1), a first sealing cover (2), a second sealing cover (3), and heat preservation cotton (6); A split-type scraper structure (4) is disposed outside the first sealing cover (2) and the second sealing cover (3); The split scraper structure (4) includes a first scraper (401) attached to the outer wall of the first sealing cover (2), a second scraper (402) attached to the outer wall of the second sealing cover (3), a connecting shaft (403) welded to the outer walls of both ends of the second scraper (402), and a threaded rod (405) welded to the outer wall of the fixing block (404). The fixing block (404) is rotatably mounted on the connecting shaft (403), and a handle (406) is rotatably mounted on the threaded rod (405).

2. The ultra-low temperature cryogenic de-NOx catalyst reactor heat preservation device according to claim 1, characterized in that: The electric heating wire assembly (1) is arranged around the outer wall of the reactor. The first sealing cover (2) and the second sealing cover (3) are respectively attached to both sides of the outer wall of the reactor. The first sealing cover (2) and the second sealing cover (3) are connected by bolts. The electric heating wire assembly (1) is arranged in the gap between the first sealing cover (2), the second sealing cover (3) and the reactor. Insulation cotton (6) is bonded to the outer wall of the first sealing cover (2) and the second sealing cover (3).

3. The ultra-low temperature de-NOx catalyst reactor heat preservation device according to claim 1, characterized in that: Both the No. 1 scraper (401) and the No. 2 scraper (402) are semi-circular arc-shaped.

4. The ultra-low temperature de-NOx catalyst reactor heat preservation device according to claim 1, characterized in that, The split scraper structure (4) also includes rectangular grooves (407) formed on the outer walls of both ends of the first scraper (401).

5. The ultra-low temperature de-NOx catalyst reactor heat preservation device according to claim 4, characterized in that, The internal dimensions of the rectangular groove (407) are adapted to the diameter of the threaded rod (405), the threaded rod (405) is disposed inside the rectangular groove (407), and the handle (406) is attached to the outer walls of both ends of the first scraper (401).

6. The ultra-low temperature de-NOx catalyst reactor heat preservation device according to claim 1, characterized in that, Also includes: Displacement structure (5), the displacement structure (5) is disposed on the outer wall of the first sealing cover (2) and the second sealing cover (3), and the displacement structure (5) is connected to the split scraper structure (4); The displacement structure (5) includes mounting blocks (501) welded to the top and bottom of the outer walls of the first sealing cover (2) and the second sealing cover (3) respectively. The mounting block (501) welded to the outer wall of the second sealing cover (3) has a bearing inside.

7. The ultra-low temperature cryogenic de-NOx catalyst reactor heat preservation device according to claim 6, characterized in that, The displacement structure (5) further includes a guide rod (502) welded to the mounting block (501) on the outer wall of the first sealing cover (2) and a threaded screw (503) disposed in the bearing of the mounting block (501) on the outer wall of the second sealing cover (3).

8. The ultra-low temperature cryogenic de-NOx catalyst reactor heat preservation device according to claim 7, characterized in that, The displacement structure (5) further includes a first connecting block (504) slidably disposed on the guide rod (502) and a second connecting block (505) threadedly connected to the threaded screw (503). The first connecting block (504) is welded to the outer wall of the first scraper (401), and the second connecting block (505) is welded to the outer wall of the second scraper (402).

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