Cement kiln medium-temperature medium-dust denitration catalyst fixing device
By designing a catalyst fixing device for cement kilns, the mechanical structure of rotating sleeves and threaded rods is used to solve the problem that smaller catalysts cannot be fixed, and the denitrification effect and the stability of the device are improved.
Patent Information
- Application Number
- CN202421716914.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-19
- Publication Date
- 2025-06-20
- Estimated Expiration
- 2034-07-19
AI Technical Summary
In cement kilns, smaller denitrification catalysts cannot be fixed, resulting in poor denitrification effect.
A catalyst fixing device is designed, including a base, sleeve, threaded rod, clamp and bump. By the cooperation of the rotating sleeve and threaded rod, the clamp and bump slide along the groove, the inner side of the clamp contacts the outer surface of the catalyst to fix the catalyst.
The fixation of denitrification catalysts of different sizes is achieved, the denitrification effect is improved, and the catalyst wear and blockage is avoided.
Smart Images
Figure CN222998578U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of denitration catalyst fixing, in particular to a catalyst fixing device for medium-temperature and medium-dust denitration in a cement kiln furnace. Background Technique
[0002] Denitration technology refers to the use of reducing agents (such as ammonia, urea, and ammonia water, etc.) under the action of a catalyst to directly convert nitrogen oxides in flue gas into water and nitrogen. The flue gas generated by a cement kiln furnace is different from that generated by a general coal-fired boiler. The flue gas generated by a cement kiln furnace has a high dust content, which is very likely to cause catalyst wear and blockage. Moreover, the dust contains a large amount of alkali metals, alkaline earth metals, and heavy metals, and these components are extremely likely to cause catalyst poisoning, resulting in the denitration system being unable to meet the nitrogen oxide emission limit.
[0003] Regarding the above-mentioned related technologies, the inventor believes that there are the following defects: When a cement kiln furnace is generated, the denitration catalyst needs to be installed inside the cement kiln furnace. Since the capacity of the cement kiln furnace is unified, when using a smaller denitration catalyst, it cannot be fixed, which in turn affects the denitration effect of the entire device. Therefore, we propose a catalyst fixing device for medium-temperature and medium-dust denitration in a cement kiln furnace to solve the above-mentioned existing problems. Content of the Utility Model
[0004] In view of the deficiencies of the prior art, the utility model provides a catalyst fixing device for medium-temperature and medium-dust denitration in a cement kiln furnace, which solves the problem that when the capacity of the cement kiln furnace is unified and a smaller denitration catalyst is used, it cannot be fixed, thereby affecting the denitration effect of the entire device.
[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A catalyst fixing device for medium-temperature and medium-dust denitration in a cement kiln furnace, including a cement kiln furnace, a base is fixedly installed at the bottom of the cement kiln furnace, and a denitration catalyst is arranged at the top inside the base and inside the cement kiln furnace. A filling block is installed inside the base, a groove is opened at the bottom of the inner wall of the base, a threaded hole is opened inside the base, and a sleeve is sleeved inside the threaded hole. At the same time, a threaded rod is threadedly sleeved on the inner wall of the sleeve, one end of the threaded rod is fixedly sleeved with a clamping plate, and a convex block is fixedly installed at the bottom of the clamping plate.
[0006] Preferably, the convex block is fixedly installed at the bottom of the clamping plate, and the convex block is slidably connected to the inner wall of the groove.
[0007] Preferably, the sleeve is sleeved on the inner wall of the threaded hole, and a threaded groove is opened on the inner wall of the sleeve. The threaded rod is threadedly sleeved on the inner wall of the sleeve.
[0008] Preferably, the threaded rod penetrates through the filling block, and one end of the threaded rod is sleeved outside the clamping plate.
[0009] Preferably, a "V"-shaped groove is formed on the inner side of the clamping plate, and a rubber pad is installed on the inner wall of the "V"-shaped groove.
[0010] Preferably, a handle is installed on the outer wall of the sleeve. The number of the sleeves, the threaded rods, the clamping plates, the grooves, the convex blocks, the filling blocks, and the threaded holes is four each. And the four sleeves, the four threaded rods, the four clamping plates, the four grooves, the four convex blocks, the four filling blocks, and the four threaded holes are all installed at the four corners of the inner wall of the base.
[0011] Preferably, an anti-corrosion coating is applied to the inner walls of the threaded holes and the sleeves. Beneficial effects
[0012] The utility model provides a catalyst fixing device for medium-temperature and medium-dust denitration in a cement kiln. Compared with the prior art, the following beneficial effects are achieved:
[0013] For the catalyst fixing device for medium-temperature and medium-dust denitration in the cement kiln, by rotating the sleeve, the threaded rod is driven to push the clamping plate and the convex block to slide along the inner wall of the groove. When the clamping plate moves to an appropriate distance, the inner side of the clamping plate contacts the outer surface of the denitration catalyst, and thus denitration catalysts of different sizes can be fixed inside the cement kiln. Brief description of the drawings
[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0015] Figure 2 It is a schematic diagram of the installation of the denitration catalyst in the overall structure of the utility model.
[0016] Figure 3 It is a schematic diagram of the installation of partial parts in the overall structure of the utility model.
[0017] Figure 4 It is a schematic diagram of a partial section of the overall structure of the utility model.
[0018] In the figure: 1, base; 11, filling block; 12, threaded hole; 2, cement kiln; 3, sleeve; 31, handle; 4, denitration catalyst; 5, threaded rod; 6, clamping plate; 7, groove; 8, convex block. Detailed implementation manners
[0019] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.
[0020] Please refer to Figures 1-4 , the present utility model provides a technical solution: a catalyst fixing device for medium-temperature and medium-dust denitrification in a cement kiln, including a cement kiln 2, a base 1 is fixedly installed at the bottom of the cement kiln 2, and a denitrification catalyst 4 is arranged at the top inside the base 1 and inside the cement kiln 2. A filling block 11 is installed inside the base 1, a groove 7 is opened at the bottom of the inner wall of the base 1, a threaded hole 12 is opened inside the base 1, and a sleeve 3 is sleeved inside the threaded hole 12. At the same time, a threaded rod 5 is threadedly sleeved on the inner wall of the sleeve 3. One end of the threaded rod 5 is fixedly sleeved with a clamping plate 6, and a convex block 8 is fixedly installed at the bottom of the clamping plate 6.
[0021] Through the base 1, the sleeve 3, the threaded rod 5, the clamping plate 6 and the convex block 8 can be installed respectively. Since the sleeve 3 is threadedly sleeved with the threaded rod 5, and one end of the threaded rod 5 is fixedly sleeved with the clamping plate 6, by rotating the sleeve 3, under the action of the thread of the threaded rod 5, the threaded rod 5 respectively pushes the clamping plate 6 and the convex block 8 to slide along the inner wall of the groove 7. When the clamping plate 6 moves an appropriate distance, the inner side of the clamping plate 6 contacts the outer surface of the denitrification catalyst 4, and then the denitrification catalyst 4 can be fixed inside the cement kiln 2.
[0022] Refer to Figure 3 , Figure 4 , the convex block 8 is fixedly installed at the bottom of the clamping plate 6, and the convex block 8 is slidably connected to the inner wall of the groove 7. The sleeve 3 is sleeved on the inner wall of the threaded hole 12, and a thread groove is opened on the inner wall of the sleeve 3. The threaded rod 5 is threadedly sleeved on the inner wall of the sleeve 3.
[0023] Through the sleeve 3, the threaded rod 5 can be installed. Since the clamping plate 6 is sleeved on one end of the threaded rod 5, and the convex block 8 is fixedly installed at the bottom of the clamping plate 6, and at the same time the convex block 8 is slidably connected to the inner wall of the groove 7, by rotating the sleeve 3, the threaded rod 5 is made to push the clamping plate 6 and the convex block 8 to slide along the inner wall of the groove 7. And when the clamping plate 6 moves an appropriate distance, the inner side of the clamping plate 6 contacts the outer surface of the denitrification catalyst 4.
[0024] Refer to Figure 2 , Figure 4 , the threaded rod 5 penetrates through the filling block 11, and one end of the threaded rod 5 is sleeved outside the clamping plate 6. A "V"-shaped groove is opened on the inner side of the clamping plate 6, and a rubber pad is installed on the inner wall of the "V"-shaped groove.
[0025] Through the threaded rod 5, the clamping plate 6 can be installed. Since a "V"-shaped groove is formed on the inner side of the clamping plate 6 and a rubber pad is installed on the inner wall of the "V"-shaped groove, by rotating the threaded rod 5, the threaded rod 5 is made to push the clamping plate 6 to move. After the clamping plate 6 moves an appropriate distance, the rubber pad installed in the "V"-shaped groove on the inner side of the clamping plate 6 contacts the outer surface of the denitration catalyst 4, and thus denitration catalysts 4 of different sizes can be fixed. Moreover, when the rubber pad contacts the denitration catalyst 4, due to the good elasticity of the rubber pad, it can absorb the impact force when the clamping plate 6 fixes the denitration catalyst 4, thereby avoiding damage to the outer surface of the denitration catalyst 4.
[0026] Refer to Figure 3 、 Figure 4 On the outer wall of the sleeve 3, a handle 31 is installed. The number of the sleeves 3, the threaded rods 5, the clamping plates 6, the grooves 7, the convex blocks 8, the filling blocks 11, and the threaded holes 12 is four, and the four sleeves 3, the four threaded rods 5, the four clamping plates 6, the four grooves 7, the four convex blocks 8, the four filling blocks 11, and the four threaded holes 12 are all installed at the four corners of the inner wall of the base 1. Anticorrosion coatings are applied to the inner walls of the threaded holes 12 and the inner walls of the sleeves 3.
[0027] Through the base 1, the four sleeves 3, the four threaded rods 5, the four clamping plates 6, the four grooves 7, the four convex blocks 8, the four filling blocks 11, and the four threaded holes 12 can be installed respectively. By rotating the four sleeves 3, under the action of the threads of the four threaded rods 5, the four threaded rods 5 respectively push the four clamping plates 6 and the four convex blocks 8 to slide along the inner walls of the four grooves 7. When the four clamping plates 6 move an appropriate distance, the inner sides of the four clamping plates 6 contact the four corners of the denitration catalyst 4, and thus denitration catalysts 4 of different sizes can be fixed inside the cement kiln 2.
[0028] During operation, through the base 1, the sleeve 3, the threaded rod 5, the clamping plate 6, and the convex block 8 can be installed respectively. Since the sleeve 3 is threadedly sleeved with the threaded rod 5 and one end of the threaded rod 5 is fixedly sleeved with the clamping plate 6, by rotating the sleeve 3, under the action of the threads of the threaded rod 5, the threaded rod 5 respectively pushes the clamping plate 6 and the convex block 8 to slide along the inner wall of the groove 7. When the clamping plate 6 moves an appropriate distance, the inner side of the clamping plate 6 contacts the outer surface of the denitration catalyst 4, and thus the denitration catalyst 4 can be fixed inside the cement kiln 2.
[0029] Through the sleeve 3, the threaded rod 5 can be installed. Since the clamping plate 6 is sleeved on one end of the threaded rod 5, and the convex block 8 is fixedly installed at the bottom of the clamping plate 6, and at the same time the convex block 8 is slidably connected to the inner wall of the groove 7, by rotating the sleeve 3, the threaded rod 5 is made to push the clamping plate 6 and the convex block 8 to slide along the inner wall of the groove 7, and when the clamping plate 6 moves an appropriate distance, the inner side of the clamping plate 6 contacts the outer surface of the denitration catalyst 4.
[0030] Through the threaded rod 5, the clamping plate 6 can be installed. Since a "V"-shaped groove is formed on the inner side of the clamping plate 6 and a rubber pad is installed on the inner wall of the "V"-shaped groove, rotating the threaded rod 5 causes the threaded rod 5 to push the clamping plate 6 to move. After the clamping plate 6 moves an appropriate distance, the rubber pad installed in the "V"-shaped groove on the inner side of the clamping plate 6 contacts the outer surface of the denitration catalyst 4, thereby fixing denitration catalysts 4 of different sizes. Moreover, when the rubber pad contacts the denitration catalyst 4, due to the good elasticity of the rubber pad, it can absorb the impact force when the clamping plate 6 fixes the denitration catalyst 4, thereby avoiding damage to the outer surface of the denitration catalyst 4.
[0031] Through the base 1, four sleeves 3, four threaded rods 5, four clamping plates 6, four grooves 7, four bumps 8, four filling blocks 11, and four threaded holes 12 can be installed respectively. Thus, by rotating the four sleeves 3, under the action of the threads of the four threaded rods 5, the four threaded rods 5 respectively push the four clamping plates 6 and the four bumps 8 to slide along the inner walls of the four grooves 7. When the four clamping plates 6 move an appropriate distance, the inner sides of the four clamping plates 6 contact the four corners of the denitration catalyst 4, thereby fixing denitration catalysts 4 of different sizes inside the cement kiln 2.
[0032] In summary, for this device, rotating the sleeve 3 causes the threaded rod 5 to push the clamping plate 6 and the bump 8 to slide along the inner wall of the groove 7. When the clamping plate 6 moves an appropriate distance, the inner side of the clamping plate 6 contacts the outer surface of the denitration catalyst 4, thereby fixing denitration catalysts 4 of different sizes inside the cement kiln 2.
[0033] Meanwhile, the content not described in detail in this specification belongs to the well-known prior art of those skilled in the art.
Claims
1. A catalyst fixing device for denitrification of medium-temperature dust in a cement kiln, comprising a cement kiln (2), a base (1) being fixedly mounted on the bottom of the cement kiln (2), and a denitrification catalyst (4) being arranged on the top of the base (1) and located inside the cement kiln (2), characterized in that: A filling block (11) is installed inside the base (1), a groove (7) is provided at the bottom of the inner wall of the base (1), a threaded hole (12) is provided inside the base (1), and a sleeve (3) is sleeved inside the threaded hole (12), and a threaded rod (5) is sleeved on the inner wall of the sleeve (3), a clamping plate (6) is fixedly sleeved on one end of the threaded rod (5), and a protrusion (8) is fixedly installed on the bottom of the clamping plate (6).
2. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized by: The protrusion (8) is fixedly mounted on the bottom of the clamping plate (6), and the protrusion (8) is slidably connected to the inner wall of the groove (7).
3. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized in that: The sleeve (3) is sleeved on the inner wall of the threaded hole (12), and a threaded groove is provided on the inner wall of the sleeve (3), and the threaded rod (5) is threadedly sleeved on the inner wall of the sleeve (3).
4. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized in that: The threaded rod (5) passes through the filling block (11), and one end of the threaded rod (5) is sleeved on the outside of the clamping plate (6).
5. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized in that: A "V"-shaped groove is provided on the inner side of the clamping plate (6), and a rubber pad is installed on the inner wall of the "V"-shaped groove.
6. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized by: A handle (31) is installed on the outer wall of the sleeve (3); the sleeve (3), the threaded rod (5), the clamping plate (6), the groove (7), the protrusion (8), the filling block (11), and the threaded hole (12) are all four in number; and the four sleeves (3), the four threaded rods (5), the four clamping plates (6), the four grooves (7), the four protrusions (8), the four filling blocks (11), and the four threaded holes (12) are all installed at the four corners of the inner wall of the base (1).
7. The catalyst fixing device for denitrification of medium-temperature dust in cement kiln according to claim 1 is characterized by: The inner wall of the threaded hole (12) and the inner wall of the sleeve (3) are both coated with an anti-corrosion coating.