Multi-stage denitration rotary kiln
By installing denitrification and adjustment components in the rotary kiln, the effective injection of urea during preheating and calcination is achieved, solving the problem of urea injection failure, improving denitrification efficiency, reducing costs, and enhancing the flexibility and economic benefits of the equipment.
Patent Information
- Application Number
- CN202520145141.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-22
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-01-22
AI Technical Summary
The existing rotary kiln cannot effectively inject urea during the preheating and calcination process, resulting in low denitrification efficiency. It cannot perform denitrification between preheating and calcination, which reduces denitrification efficiency and increases costs.
A multi-stage denitrification rotary kiln is designed. By setting a denitrification assembly between the preheating and calcining devices, including a connecting ring plate, a denitrification frame, and a circular plate, urea is injected between the preheating and calcining stages using a motor-driven system. Combined with an adjustment assembly, the amount of urea can be adjusted to achieve effective injection of urea at different stages.
It improves the denitrification efficiency of rotary kilns, simplifies the denitrification process, reduces costs, and enhances the flexibility and economic benefits of the equipment.
Smart Images
Figure CN223726832U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to denitration technical field, concretely relates to a multistage denitration rotary kiln. BACKGROUND
[0002] The denitration rotary kiln is a device used for treating solid waste materials or carrying out industrial processes such as ore roasting and cement production, which combines urea denitration technology to reduce nitrogen oxide emissions during the combustion process. The multistage denitration rotary kiln achieves more efficient combustion and pollution control by designing multiple reaction zones or stages.
[0003] The existing rotary kiln is composed of a drying device, a preheating calcination device, a cooling device, and a rotating device.
[0004] During the denitration process of the material, preheating and calcination are integrated, and the rotating device continuously drives the preheating calcination device to rotate, which prevents urea from being injected between preheating and calcination, and the material can only be denitrified in other links, thereby reducing the denitration efficiency of the denitration rotary kiln. Therefore, it is urgent to design a multistage denitration rotary kiln to solve the above problems. SUMMARY
[0005] The utility model aims to provide a multistage denitration rotary kiln to solve the above problems in the prior art.
[0006] To achieve the above purpose, the utility model provides the following technical scheme:
[0007] The preheating device, the calcination device, and the base are provided with a denitration assembly between the preheating device and the calcination device, and an adjustment assembly is provided between the preheating device and the calcination device.
[0008] The denitration assembly includes a connecting ring plate arranged between the preheating device and the calcination device, a denitration frame fixedly installed on the outer surface of the connecting ring plate, a circular plate rotatably installed in the denitration frame, a plurality of grooves opened on the outer surface of the circular plate, a support plate fixedly installed in the grooves, a moving plate slidably installed between the support plates, a bottom plate fixedly installed on the top of the moving plate, and a baffle fixedly installed on the bottom of the moving plate.
[0009] The denitration assembly can inject urea between preheating and calcination, thereby preventing the situation where urea cannot be injected between preheating and calcination, and the material can only be denitrified in other links, thereby increasing the denitration efficiency of the denitration rotary kiln, simplifying the denitration process, reducing the denitration cost, and achieving excellent economic benefits.
[0010] A through groove is formed between the denitration frame and the connecting ring plate, an arc-shaped plate is fixedly installed at the bottom of the baffle, and a urea tank is arranged at the top of the denitration frame.
[0011] A circular groove is formed between the denitration frame and the circular plate, a motor is fixedly installed at one side of the denitration frame, and the circular plate is connected with the motor output end.
[0012] A plurality of rotating devices are arranged at the top of the base, a drying device is arranged at the top of the rotating device, a cooling device is arranged at the top of the rotating device, a preheating device is arranged at the top of the rotating device, a calcining device is arranged at the top of the rotating device, a fixed plate is fixedly installed at the top of the base, the fixed plate is fixedly connected with the connecting ring plate, the drying device is connected with the preheating device, and the cooling device is connected with the calcining device.
[0013] The adjusting assembly comprises an L-shaped frame, an adjusting frame, a sliding block, a rack, a gear, a knob, a buckle and a conical plate, the L-shaped frame is fixedly installed at one side of the denitration frame, the adjusting frame is fixedly installed at the top of the L-shaped frame, a sliding groove is formed at one side of the adjusting frame, and the sliding block is slidingly installed in the sliding groove.
[0014] The rack is fixedly installed at the bottom of the sliding block, the gear is rotatably installed in the adjusting frame, the knob is rotatably installed at one side of the adjusting frame, the knob is connected with the gear, the buckle is fixedly installed at one side of the adjusting frame, and the conical plate is fixedly installed at one side of the sliding block.
[0015] In the above technical solution, the multi-stage denitration rotary kiln has the following beneficial effects:
[0016] 1. The denitration assembly can inject urea between preheating and calcining, thereby preventing the situation that urea cannot be injected between preheating and calcining and that the material can only be denitrified in other links, increasing the denitration efficiency of the denitration rotary kiln, simplifying the denitration process, reducing the denitration cost, and having excellent economic benefits.
[0017] 2. The preheating device and the calcining device can control the temperature at the connecting ring plate to be at the most suitable denitration temperature, thereby improving the denitration effect of the denitration rotary kiln.
[0018] 3. The adjusting assembly can facilitate the staff to adjust the amount of urea according to the actual situation, thereby improving the flexibility of the denitration rotary kiln in use. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments will be briefly introduced as follows. Obviously, the drawings in the following description only represent some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.
[0020] Figure 1 A denitration rotary kiln structure schematic diagram provided by the multi-stage denitration rotary kiln embodiment of the present application.
[0021] Figure 2 A denitration assembly structure schematic diagram provided by the multi-stage denitration rotary kiln embodiment of the present application.
[0022] Figure 3 An adjustment assembly structure schematic diagram provided by the multi-stage denitration rotary kiln embodiment of the present application.
[0023] Figure 4 A denitration assembly cross-sectional structure schematic diagram provided by the multi-stage denitration rotary kiln embodiment of the present application.
[0024] 1, preheating device; 2, calcining device; 3, denitration assembly; 4, adjustment assembly; 5, connecting ring plate; 6, denitration frame; 7, round plate; 8, groove; 9, support plate; 10, moving plate; 11, bottom plate; 12, baffle; 13, through slot; 14, arc plate; 15, round groove; 16, motor; 17, base; 18, rotating device; 19, drying device; 20, cooling device; 21, fixed plate; 22, L-shaped frame; 23, adjustment frame; 24, sliding block; 25, rack; 26, gear; 27, knob; 28, buckle; 29, conical plate; 30, sliding groove; 31, urea tank. DETAILED DESCRIPTION
[0025] In order to make those skilled in the art better understand the technical scheme of the present application, the present application will be further described in detail with reference to the drawings.
[0026] As shown in Figures 1-4 The present application provides a multi-stage denitration rotary kiln.
[0027] The preheating device 1 and the calcining device 2 are provided with a denitration assembly 3 and an adjustment assembly 4 therebetween.
[0028] The denitration assembly 3 comprises a connecting ring plate 5 arranged between the preheating device 1 and the calcining device 2, a denitration frame 6 fixedly arranged on the outer surface of the connecting ring plate 5, a circular plate 7 rotatably arranged in the denitration frame 6, a plurality of grooves 8 arranged on the outer surface of the circular plate 7, a plurality of support plates 9 fixedly arranged in the grooves 8, a moving plate 10 slidably arranged between the support plates 9, a bottom plate 11 fixedly arranged on the top of the moving plate 10, and a baffle plate 12 fixedly arranged on the bottom of the moving plate 10. The preheated material falls into the connecting ring plate 5, the circular plate 7 is driven to rotate by starting the motor 16, the urea is driven to rotate by the bottom plate 11 and the grooves 8, the urea falls into the connecting ring plate 5 through the through groove 13 from the groove 8 when the groove 8 corresponds to the through groove 13, and the urea contacts the material to denitrate the material.
[0029] The denitration assembly 3 can inject urea between preheating and calcining, thereby preventing the urea from being unable to be injected between preheating and calcining, preventing the material from being denitrated only in other links, increasing the denitration efficiency of the denitration rotary kiln, simplifying the denitration process, reducing the denitration cost, and having excellent economic benefits.
[0030] The preheating device 1 and the calcining device 2 can control the temperature at the connecting ring plate 5 to be at the most suitable denitration temperature, thereby improving the denitration effect of the denitration rotary kiln.
[0031] With reference to Figure 4 , the denitration frame 6 and the connecting ring plate 5 are provided with a through groove 13, the bottom of the baffle plate 12 is fixedly provided with an arc-shaped plate 14, and the top of the denitration frame 6 is provided with a urea tank 31.
[0032] The denitration frame 6 and the circular plate 7 are provided with a circular groove 15, one side of the denitration frame 6 is fixedly provided with a motor 16, and the circular plate 7 is connected with the output end of the motor 16.
[0033] The top of the base 17 is provided with a plurality of rotating devices 18, the top of each rotating device 18 is provided with a drying device 19, the top of each rotating device 18 is provided with a cooling device 20, the preheating device 1 is arranged on the top of each rotating device 18, the calcining device 2 is arranged on the top of each rotating device 18, a fixed plate 21 is fixedly arranged on the top of the base 17, the fixed plate 21 is fixedly connected with the connecting ring plate 5, the drying device 19 is connected with the preheating device 1, and the cooling device 20 is connected with the calcining device 2.
[0034] With reference to Figure 3The adjusting assembly 4 of the embodiment comprises an L-shaped frame 22, an adjusting frame 23, a sliding block 24, a rack 25, a gear 26, a knob 27, a buckle 28 and a conical plate 29. The L-shaped frame 22 is fixedly installed on one side of the denitration frame 6. The adjusting frame 23 is fixedly installed on the top of the L-shaped frame 22. A sliding groove 30 is formed in one side of the adjusting frame 23. The sliding block 24 is slidingly installed in the sliding groove 30. The knob 27 is rotated to drive the gear 26 to rotate according to actual needs. The gear 26 drives the sliding block 24 to move through the rack 25. The sliding block 24 drives the conical plate 29 to move, so that the conical plate 29 extrudes the arc-shaped plate 14. The arc-shaped plate 14 drives the bottom plate 11 to move through the baffle 12 and the moving plate 10, so as to adjust the amount of urea. After the adjustment of the amount of urea is completed, the knob 27 is fixed in position by the buckle 28 according to the above steps, so as to fix the conical plate 29 in position.
[0035] The adjusting assembly 4 can facilitate the staff to adjust the amount of urea according to actual conditions, thereby improving the flexibility of the denitration rotary kiln furnace in use.
[0036] The rack 25 is fixedly installed at the bottom of the sliding block 24. The gear 26 is rotatably installed in the adjusting frame 23. The knob 27 is rotatably installed on one side of the adjusting frame 23. The knob 27 is connected with the gear 26. The buckle 28 is fixedly installed on one side of the adjusting frame 23. The conical plate 29 is fixedly installed on one side of the sliding block 24.
[0037] Working principle: first, the knob 27 is rotated to drive the gear 26 to rotate according to actual needs. The gear 26 drives the sliding block 24 to move through the rack 25. The sliding block 24 drives the conical plate 29 to move, so that the conical plate 29 extrudes the arc-shaped plate 14. The arc-shaped plate 14 drives the bottom plate 11 to move through the baffle 12 and the moving plate 10, so as to adjust the amount of urea. After the adjustment of the amount of urea is completed, the knob 27 is fixed in position by the buckle 28 according to the above steps, so as to fix the conical plate 29 in position. Urea falls from the urea tank 31 to the bottom plate 11. The rotating device 18 is started to drive the drying device 19, the preheating device 1, the calcining device 2 and the cooling device 20 to rotate. The material is poured into the drying device 19 for drying. The dried material falls into the preheating device 1 for preheating. The preheated material falls into the connecting ring plate 5. The motor 16 is started to drive the circular plate 7 to rotate. The circular plate 7 drives the urea to rotate through the bottom plate 11 and the groove 8. When the groove 8 corresponds to the through groove 13, the urea falls from the groove 8 through the through groove 13 into the connecting ring plate 5 to contact the material, so as to denitrate the material. The denitrated material falls from the connecting ring plate 5 into the calcining device 2. The calcined material falls from the calcining device 2 into the cooling device 20 for cooling.
[0038] The above has only described certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature, and should not be understood as limiting the scope of protection of the claims of the present application.
Claims
1. A multi-stage denitration rotary kiln, comprising a preheating device (1), a calcining device (2) and a base (17), characterized in that, The preheating device (1) and the calcining device (2) are provided with a denitration assembly (3), and the preheating device (1) and the calcining device (2) are provided with an adjusting assembly (4); The denitration assembly (3) comprises a connecting ring plate (5) arranged between the preheating device (1) and the calcining device (2), a denitration frame (6) fixedly installed on the outer surface of the connecting ring plate (5), a circular plate (7) rotatably installed in the denitration frame (6), a plurality of grooves (8) formed in the outer surface of the circular plate (7), a support plate (9) fixedly installed in the grooves (8), a moving plate (10) slidably installed between the support plates (9), a bottom plate (11) fixedly installed on the top of the moving plate (10), and a baffle (12) fixedly installed on the bottom of the moving plate (10).
2. The multi-stage denitration rotary kiln according to claim 1, characterized in that, A through groove (13) is formed between the denitration frame (6) and the connecting ring plate (5), an arc-shaped plate (14) is fixedly installed on the bottom of the baffle (12), and a urea tank (31) is arranged on the top of the denitration frame (6).
3. The multi-stage denitration rotary kiln according to claim 1, characterized in that, A circular groove (15) is formed between the denitration frame (6) and the circular plate (7), a motor (16) is fixedly installed on one side of the denitration frame (6), and the circular plate (7) is connected with the output end of the motor (16).
4. The multi-stage denitration rotary kiln according to claim 1, characterized in that, A plurality of rotating devices (18) are arranged on the top of the base (17), a drying device (19) is arranged on the top of each rotating device (18), a cooling device (20) is arranged on the top of each rotating device (18), the preheating device (1) is arranged on the top of each rotating device (18), the calcining device (2) is arranged on the top of each rotating device (18), a fixed plate (21) is fixedly installed on the top of the base (17), the fixed plate (21) is fixedly connected with the connecting ring plate (5), the drying device (19) is connected with the preheating device (1), and the cooling device (20) is connected with the calcining device (2).
5. The multi-stage denitration rotary kiln according to claim 1, characterized in that, The adjusting assembly (4) comprises an L-shaped frame (22), an adjusting frame (23), a sliding block (24), a rack (25), a gear (26), a knob (27), a buckle (28), and a conical plate (29), the L-shaped frame (22) is fixedly installed on one side of the denitration frame (6), the adjusting frame (23) is fixedly installed on the top of the L-shaped frame (22), a sliding groove (30) is formed in one side of the adjusting frame (23), and the sliding block (24) is slidably installed in the sliding groove (30).
6. The multi-stage denitration rotary kiln according to claim 5, characterized in that, The rack (25) is fixedly installed on the bottom of the sliding block (24), the gear (26) is rotatably installed in the adjusting frame (23), the knob (27) is rotatably installed on one side of the adjusting frame (23), the knob (27) is connected with the gear (26), the buckle (28) is fixedly installed on one side of the adjusting frame (23), and the conical plate (29) is fixedly installed on one side of the sliding block (24).