Dry quenching 1DC honeycomb type water cooling sleeve protection transformation device

Abstract

The utility model belongs to the technical field of metallurgy, and particularly relates to a dry quenching DC honeycomb type water cooling sleeve protection transformation device which comprises an ash bin, and two ash outlet pipes are communicated and fixed at the bottom of the ash bin. According to the utility model, high-temperature coke powder is discharged from the bottom of the ash bin through the ash outlet pipe, passes through the short expansion joint and the original expansion joint and finally enters the honeycomb type water cooling sleeve body, the short expansion joint absorbs high-temperature expansion stress between the ash bin and the sleeve by additionally arranging a double-layer heat insulation structure, and circulating cooling water is introduced into the honeycomb type water cooling sleeve body to indirectly exchange heat with the coke powder; the temperature of the coke powder is reduced to a safe range, the coke powder isolation cylinder independently installed in each honeycomb hole directly makes contact with high-temperature coke powder and can prevent the coke powder from directly scouring the honeycomb core, the coke powder isolation cylinders are connected with the honeycomb core in a clamped mode through the connecting rings, the damaged coke powder isolation cylinders can be independently detached and replaced, and after the short expansion joints are additionally installed, the coke powder isolation cylinders can be replaced. The gap between the coke powder separation barrel and the coke powder separation barrel is enlarged, scratching of an overhauling tool during operation is avoided, the service life is greatly prolonged, and labor cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical technology, specifically to a protection and modification device for a dry quenching coke 1DC honeycomb water-cooled jacket. Background Technology

[0002] Dry quenching, a core technology for energy conservation and emission reduction in the coking industry, utilizes inert gas circulation to cool red-hot coke, achieving heat recovery and improving coke quality. The primary dust collector (1DC) is a key component of the dry quenching system, responsible for separating large coke particles from the high-temperature circulating gas. Its performance directly affects boiler lifespan and system operational stability. Water-cooled jackets, as a core component of the primary dust collector, cool the high-temperature coke particles using internal circulating cooling water, preventing high-temperature deformation of the equipment. Early U-shaped water-cooled jackets suffered from uneven coke cooling and weld cracking due to localized overheating. Honeycomb water-cooled jackets, with their multi-channel structure optimizing coke particle distribution, significantly improve cooling uniformity and service life, becoming the mainstream technology.

[0003] Although honeycomb water-cooled jackets have advantages such as uniform cooling of coke powder and long service life, it has been found in actual operation that although honeycomb water-cooled jackets extend service life, there are still some defects in their design. During dry quenching operation, water leakage occurs in the dry quenching water-cooled jackets due to cracking of the upper weld joint of the honeycomb (the position that directly contacts the red ash). Therefore, we proposed a protection and modification device for dry quenching 1DC honeycomb water-cooled jackets to solve the above problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a dry quenching coke 1DC honeycomb water-cooled jacket protection modification device, which solves the problems mentioned in the background technology.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A dry quenching coke DC honeycomb water-cooled jacket protection and modification device includes an ash hopper. The bottom of the ash hopper is connected to and fixed with two ash outlet pipes. A first flange is fixedly connected to each ash outlet pipe. A short expansion joint is movably contacted at the bottom end of each ash outlet pipe. Second flanges are fixedly connected to both ends of each short expansion joint. The first flange is threadedly connected to one of the two second flanges via multiple first bolts and first nuts. An original expansion joint is movably contacted at the bottom end of the short expansion joint. A third flange is fixedly connected to both ends of each of the two third flanges. One of the two third flanges is threaded through multiple... The second bolt and the second nut are threadedly connected to the other of the two second flanges. The bottom end of the original expansion joint is in movable contact with the honeycomb water-cooled sleeve body. The top end of the honeycomb water-cooled sleeve body is fixedly connected to the fourth flange. The fourth flange is threadedly connected to the other of the two third flanges by multiple third bolts and third nuts. The honeycomb water-cooled sleeve body is provided with a honeycomb core. Multiple honeycomb holes are opened on the honeycomb core. Coke powder isolation cylinders are provided on the honeycomb holes. The top end of the coke powder isolation cylinder is fixedly connected to a connecting ring. The connecting ring is engaged with the honeycomb core.

[0009] Furthermore, the bottom of the honeycomb water-cooled sleeve body is connected to and fixed with a connecting pipe, and the connecting pipe is equipped with a slide valve.

[0010] Furthermore, a grid valve is provided inside the connecting pipe.

[0011] Furthermore, the outer surface of the short expansion joint is provided with a double-layer heat insulation structure.

[0012] Furthermore, the double-layer thermal insulation structure consists of an inner layer and an outer layer, wherein the inner layer is an aluminum silicate fiber blanket and the outer layer is a corundum castable.

[0013] Furthermore, a high-temperature resistant graphite gasket is provided between the second flange and the third flange connecting the short expansion joint and the original expansion joint.

[0014] (III) Beneficial Effects

[0015] Compared with the prior art, this utility model provides a protection and modification device for dry quenching coke 1DC honeycomb water-cooled jacket, which has the following beneficial effects:

[0016] This invention involves high-temperature coke powder being discharged from the bottom of the ash silo through an ash outlet pipe, passing sequentially through a short expansion joint and the original expansion joint, and finally entering the honeycomb-type water-cooled jacket body. The short expansion joint, with its added double-layer heat insulation structure, absorbs the high-temperature expansion stress between the ash silo and the jacket, reducing the accumulation of thermal expansion displacement and improving the stability of the pipeline system. Circulating cooling water is circulated within the honeycomb-type water-cooled jacket body to indirectly exchange heat with the coke powder, reducing the coke powder temperature to a safe range. Each honeycomb cell has an independently installed coke powder isolation cylinder that directly contacts the high-temperature coke powder, preventing the coke powder from directly scouring the honeycomb core and avoiding ablation or blockage of the honeycomb structure. The coke powder isolation cylinder is snapped into the honeycomb core by a connecting ring, allowing for individual removal and replacement of damaged coke powder isolation cylinders. The addition of the short expansion joint increases the gap between the isolation cylinder and the honeycomb core, preventing scratches from maintenance tools during operation, thereby greatly improving service life and reducing labor costs. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the inclined three-dimensional structure of this utility model;

[0019] Figure 3 This is a three-dimensional structural diagram showing the connection between the short expansion joint of this utility model and the original expansion joint;

[0020] Figure 4 This is a three-dimensional structural diagram of the cut-open connecting pipe of this utility model;

[0021] Figure 5 This is a three-dimensional structural diagram of the cut-open honeycomb water-cooled sleeve body of this utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the coke powder isolation cylinder and honeycomb core of this utility model.

[0023] In the diagram: 1. Ash hopper; 2. Ash discharge pipe; 3. First flange; 4. Short expansion joint; 5. Second flange; 6. First bolt; 7. Original expansion joint; 8. Third flange; 9. Second bolt; 10. Honeycomb water-cooled jacket body; 11. Fourth flange; 12. Third bolt; 13. Honeycomb core; 14. Honeycomb holes; 15. Coke powder isolation cylinder; 16. Connecting ring; 17. Slide valve; 18. Filter valve; 19. Connecting pipe. Detailed Implementation

[0024] 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.

[0025] Example

[0026] like Figure 1-6 As shown, an embodiment of the present invention proposes a dry quenching coke 1DC honeycomb water-cooled jacket protection modification device, including an ash silo 1. The bottom of the ash silo 1 is connected to and fixed with two ash outlet pipes 2. A first flange 3 is fixedly connected to the ash outlet pipe 2. A short expansion joint 4 is movably contacted at the bottom end of the ash outlet pipe 2. Second flanges 5 are fixedly connected to both ends of the short expansion joint 4. The first flange 3 and one of the two second flanges 5 are threadedly connected by multiple first bolts 6 and first nuts. The bottom end of the short expansion joint 4 is movably contacted with the original expansion joint 7. Both ends are fixedly connected to a third flange 8. One of the two third flanges 8 is threadedly connected to the other of the two second flanges 5 via multiple second bolts 9 and second nuts. The bottom end of the original expansion joint 7 is in movable contact with the honeycomb-shaped water-cooled sleeve body 10. The top end of the honeycomb-shaped water-cooled sleeve body 10 is fixedly connected to a fourth flange 11. The fourth flange 11 is threadedly connected to the other of the two third flanges 8 via multiple third bolts 12 and third nuts. The honeycomb-shaped water-cooled sleeve body 10 is provided with honeycomb... The honeycomb core 13 has multiple honeycomb holes 14, and a coke powder isolation cylinder 15 is installed on the honeycomb holes 14. A connecting ring 16 is fixedly connected to the top of the coke powder isolation cylinder 15, and the connecting ring 16 is engaged with the honeycomb core 13. High-temperature coke powder is discharged from the bottom of the ash silo 1 through the ash outlet pipe 2, passes through the short expansion joint 4 and the original expansion joint 7 in sequence, and finally enters the honeycomb water-cooled jacket body 10. The short expansion joint 4 absorbs the high-temperature expansion stress between the ash silo 1 and the jacket by adding a double-layer heat insulation structure, reduces the accumulation of thermal expansion displacement, and improves the stability of the pipeline system. The honeycomb water-cooled jacket body The honeycomb core 13 is indirectly heated by circulating cooling water, which reduces the temperature of the coke powder to a safe range. Each honeycomb cell 14 has an independently installed coke powder isolation cylinder 15 that directly contacts the high-temperature coke powder, preventing the coke powder from directly scouring the honeycomb core 13 and avoiding burning or clogging of the honeycomb structure. The coke powder isolation cylinder 15 is connected to the honeycomb core 13 by a connecting ring 16, and the damaged coke powder isolation cylinder 15 can be disassembled and replaced individually. After adding a short expansion joint 4, the gap between it and the coke powder isolation cylinder 15 is increased, which prevents the maintenance tools from scratching during operation, thereby greatly improving the service life and reducing labor costs.

[0027] In some embodiments, the bottom of the honeycomb water-cooled jacket body 10 is connected to and fixed with a connecting pipe 19. The connecting pipe 19 is provided with a slide valve 17 and a grid valve 18. During maintenance, the coke powder flow can be completely cut off through the slide valve 17 to isolate the honeycomb water-cooled jacket body 10 from the downstream equipment, so as to achieve maintenance without stopping the machine.

[0028] In some embodiments, the outer surface of the short expansion joint 4 is provided with a double-layer thermal insulation structure.

[0029] In some embodiments, the double-layer insulation structure consists of an inner layer and an outer layer. The inner layer is an aluminum silicate fiber blanket, and the outer layer is a corundum castable. As a flexible insulation layer, it is directly attached to the surface of the corrugated pipe. Through its low thermal conductivity (≤0.15W / m·K), it quickly absorbs and disperses the thermal radiation (600~900℃) of high-temperature coke powder, reducing the surface temperature of the metal corrugated pipe to ≤450℃ and avoiding high-temperature creep. As a rigid protective layer, it resists the scouring of coke powder and mechanical impact. At the same time, through its high thermal conductivity (≥2.5W / m·K), it evenly diffuses residual heat, reduces local thermal stress concentration, and prevents the corrugated pipe from cracking due to temperature difference deformation.

[0030] In some embodiments, a high-temperature resistant graphite gasket is provided between the second flange 5 and the third flange 8 connecting the short expansion joint 4 and the original expansion joint 7. The graphite material maintains excellent sealing performance at high temperatures of 600 to 900°C, avoiding leakage at the flange connection due to thermal expansion differences and ensuring the airtightness of the coke powder conveying system.

[0031] Working principle or structural principle: During use, high-temperature coke powder is discharged from the bottom of the ash silo 1 through the ash outlet pipe 2, passes through the short expansion joint 4 and the original expansion joint 7 in sequence, and finally enters the honeycomb water-cooled jacket body 10. The short expansion joint 4, with the addition of a double-layer heat insulation structure, absorbs the high-temperature expansion stress between the ash silo 1 and the jacket, reduces the accumulation of thermal expansion displacement, and improves the stability of the pipeline system. Circulating cooling water is introduced into the honeycomb water-cooled jacket body 10 to indirectly exchange heat with the coke powder, reducing the temperature of the coke powder to a safe range. The coke powder isolation cylinder 15, which is independently installed in each honeycomb hole 14, directly contacts the high-temperature coke powder and can prevent the coke powder from directly scouring the honeycomb core 13, avoiding the burning or blockage of the honeycomb structure. The coke powder isolation cylinder 15 is snapped to the honeycomb core 13 by the connecting ring 16, and the damaged coke powder isolation cylinder 15 can be disassembled and replaced individually. After adding the short expansion joint 4, the gap between it and the coke powder isolation cylinder 15 is increased, avoiding scratches during maintenance tool operation, thereby greatly improving the service life and reducing labor costs.

[0032] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A dry quenching coke 1DC honeycomb water-cooled jacket protection modification device, including an ash hopper (1), characterized in that: The bottom of the ash silo (1) is connected to and fixed with two ash discharge pipes (2). A first flange (3) is fixedly connected to the ash discharge pipe (2). The bottom end of the ash discharge pipe (2) is in movable contact with a short expansion joint (4). Both ends of the short expansion joint (4) are fixedly connected with second flanges (5). The first flange (3) and one of the two second flanges (5) are connected by multiple first bolts (6) and first nuts. The bottom end of the short expansion joint (4) is in movable contact with an original expansion joint (7). Both ends of the original expansion joint (7) are fixedly connected with third flanges (8). One of the two third flanges (8) is connected to the other of the two second flanges (5) by multiple second bolts (9) and second nuts. Another second flange (5) is threadedly connected. The bottom end of the original expansion joint (7) is in contact with the honeycomb water-cooled sleeve body (10). The top end of the honeycomb water-cooled sleeve body (10) is fixedly connected to the fourth flange (11). The fourth flange (11) is threadedly connected to the other third flange (8) of the two third flanges (8) by multiple third bolts (12) and third nuts. The honeycomb water-cooled sleeve body (10) is provided with a honeycomb core (13). Multiple honeycomb holes (14) are opened on the honeycomb core (13). A coke powder isolation cylinder (15) is provided on the honeycomb hole (14). A connecting ring (16) is fixedly connected to the top end of the coke powder isolation cylinder (15). The connecting ring (16) is engaged with the honeycomb core (13).

2. The dry quenching coke 1DC honeycomb water-cooled bushing protection modification device according to claim 1, characterized in that: The bottom of the honeycomb water-cooled sleeve body (10) is connected to and fixed with a connecting pipe (19), and a slide valve (17) is provided on the connecting pipe (19).

3. The dry quenching coke 1DC honeycomb water-cooled bushing protection modification device according to claim 2, characterized in that: The connecting pipe (19) is equipped with a grid valve (18).

4. The dry quenching coke 1DC honeycomb water-cooled bushing protection modification device according to claim 3, characterized in that: The outer surface of the short expansion joint (4) is provided with a double-layer heat insulation structure.

5. The dry quenching coke 1DC honeycomb water-cooled bushing protection modification device according to claim 4, characterized in that: The double-layer thermal insulation structure consists of an inner layer and an outer layer. The inner layer is an aluminum silicate fiber blanket, and the outer layer is a corundum castable.

6. The dry quenching coke 1DC honeycomb water-cooled bushing protection modification device according to claim 5, characterized in that: A high-temperature resistant graphite gasket is provided between the second flange (5) and the third flange (8) connecting the short expansion joint (4) and the original expansion joint (7).

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