Tunnel kiln tail desulfurization device
By designing the tunnel kiln tail desulfurization device, using high-temperature bag dust removal and rotary ring to drive the absorbent and flue gas to mix, the problems of high energy consumption and low efficiency of the tunnel kiln tail desulfurization device are solved, and the full mixing of flue gas and absorber is achieved. Energy consumption is reduced.
Patent Information
- Application Number
- CN202420119913.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-17
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-17
AI Technical Summary
The existing tunnel kiln exhaust desulfurization device has the problems of high energy consumption and low desulfurization efficiency. The wet desulfurization produces difficult waste liquid and waste slag, which leads to environmental pollution. The semi-dry method requires a large amount of gas resources, and the absorbent and flue gas cannot be mixed. full.
A tail desulfurization device including tunnel kiln body, heat exchanger, dust collector and desulfurization tower was designed. Through the connection of exhaust gas discharge pipe, conveying pipe and flue gas discharge pipe, high-temperature bag dust removal and rotary ring, the absorbent and smoke are driven by the connection of high-temperature bag dust removal and rotary ring. The gas is fully mixed to achieve full fusion of flue gas and absorbent, reduce energy consumption and improve desulfurization efficiency.
Heating dust removal flue gas by heating the raw flue gas temperature reduces energy consumption and operating costs, improving desulfurization efficiency, ensuring full mixing of absorbents and flue gas, reducing the generation of waste liquid and waste slag, and reducing environmental pollution.
Smart Images
Figure CN222143782U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of tunnel kiln environmental protection, in particular to a desulfurization device at the tail of a tunnel kiln. Background Art
[0002] The tunnel kiln is a tunnel-like kiln built with refractory materials, thermal insulation materials and building materials, equipped with kiln cars and other vehicles. It is a modern continuous firing thermal equipment. The exhaust gas generated by the tunnel kiln during operation needs to be treated.
[0003] 1. At present, tunnel kiln tail gas desulfurization equipment generally adopts semi-dry or wet method. Among them, wet desulfurization will produce waste liquid and waste residue that are difficult to treat, which will cause secondary pollution to the environment; semi-dry desulfurization also requires increasing the flue gas temperature, consumes a lot of gas resources, and has high cost; 2. At present, when the tunnel kiln tail gas desulfurization equipment is in use, the absorbent and the flue gas cannot be fully mixed, resulting in low desulfurization efficiency. Utility Model Content
[0004] The utility model aims to solve the shortcomings of the prior art tunnel kiln tail gas desulfurization device that cannot reduce energy consumption and has low desulfurization efficiency, and proposes a tunnel kiln tail desulfurization device.
[0005] In order to solve the problems existing in the prior art, the utility model adopts the following technical solutions:
[0006] A desulfurization device at the tail end of a tunnel kiln comprises a tunnel kiln body, a heat exchanger, a dust collector, a desulfurization tower and a charging barrel, wherein an exhaust gas emission pipe is fixedly provided on the tunnel kiln body, a first conveying pipe is fixedly provided on the exhaust gas emission pipe, one end of the first conveying pipe is fixedly connected to the heat exchanger, a second conveying pipe is fixedly provided on one end of the heat exchanger, one end of the second conveying pipe is connected to the dust collector, a third conveying pipe is fixedly provided on the dust collector, one end of the third conveying pipe is fixedly connected to the desulfurization tower, a fourth conveying pipe is fixedly provided on the desulfurization tower, one end of the fourth conveying pipe is connected to the heat exchanger, a flue gas emission pipe is fixedly provided on the heat exchanger, one end of the third conveying pipe is located below the desulfurization plate, one end of the fourth conveying pipe is located above the desulfurization plate, the dust collector is a high-temperature bag dust collector, and the exhaust gas emission pipe is located at the tail end of the tunnel kiln body.
[0007] Preferably, a feeding pipe is fixedly provided on the charging barrel, a delivery pump is provided in the charging barrel, and the delivery pump is fixedly connected to the feeding pipe.
[0008] Preferably, a connecting pipe is fixedly provided at the upper end of the desulfurization tower, a fixing ring is fixedly provided at the lower end of the connecting pipe, a rotating ring is rotatably provided on the outer wall of the fixing ring, the rotating ring is connected with the inner wall of the fixing ring, a plurality of circular rods are fixedly provided on the upper surface of the rotating ring, a fixing frame is fixedly provided on the upper surface of the desulfurization tower, a motor is fixedly provided on the fixing frame, a driving ring is fixedly provided at the output end of the motor, the driving ring is meshed with the circular rods, a plurality of spray holes are provided on the lower surfaces of the fixing ring and the rotating ring, the output end of the motor passes through the desulfurization tower, the lower end of the connecting pipe is connected with the middle part of the fixing ring, the upper end of the connecting pipe is fixedly connected with the upper end of the feeding pipe, a desulfurization plate is fixedly provided in the desulfurization tower, a plurality of fusion holes are provided on the desulfurization plate, the upper surface of the desulfurization plate is inclined, and both sides and one end of the desulfurization plate are in contact with the inner wall of the desulfurization tower.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] 1. In the utility model, the gas generated by the tunnel kiln body enters the heat exchanger from the tail gas discharge pipe, then enters the dust collector for dust removal, and then enters the desulfurization tower for desulfurization. The flue gas after desulfurization enters the heat exchanger again, and the flue gas after dust removal is heated by the original flue gas temperature, thereby reducing energy consumption and operating costs;
[0011] 2. In the utility model, the rotating ring is driven by a motor to rotate. When the rotating ring rotates, the sprayed absorbent is driven to swing, thereby increasing the area of sprinkling. Some absorbents will fall onto the desulfurization plate. The absorbents that fall on the desulfurization plate will fall from the fusion holes, and the flue gas will pass through the fusion holes upward, so that the flue gas and the absorbent are fully fused. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0013] Figure 1 This is a schematic diagram of the main structure of the utility model;
[0014] Figure 2 This is a schematic diagram of the charging barrel structure of the utility model;
[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the desulfurization tower of the utility model;
[0016] Figure 4 This is a schematic cross-sectional view of the rotating ring of the utility model;
[0017] Serial numbers in the figure: 1. Tunnel kiln body; 11. Heat exchanger; 12. Dust collector; 13. Desulfurization tower; 14. Tail gas emission pipe; 15. First conveying pipe; 16. Second conveying pipe; 17. Third conveying pipe; 18. Fourth conveying pipe; 19. Flue gas emission pipe; 2. Charging barrel; 21. Feeding pipe; 3. Connecting pipe; 31. Fixed ring; 32. Rotating ring; 33. Round rod; 34. Fixed frame; 35. Motor; 36. Drive ring; 37. Spray hole; 4. Desulfurization plate; 41. Fusion hole. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0019] Example 1: This example provides a tunnel kiln tail desulfurization device, see Figure 1-4 Specifically, it includes a tunnel kiln body 1, a heat exchanger 11, a dust collector 12, a desulfurization tower 13 and a charging barrel 2. The tunnel kiln body 1 is fixedly provided with an exhaust gas exhaust pipe 14, and the exhaust gas exhaust pipe 14 is fixedly provided with a first conveying pipe 15, one end of the first conveying pipe 15 is fixedly connected to the heat exchanger 11, one end of the heat exchanger 11 is fixedly provided with a second conveying pipe 16, one end of the second conveying pipe 16 is connected to the dust collector 12, a third conveying pipe 17 is fixedly provided on the dust collector 12, one end of the third conveying pipe 17 is fixedly connected to the desulfurization tower 13, a fourth conveying pipe 18 is fixedly provided on the desulfurization tower 13, one end of the fourth conveying pipe 18 is connected to the heat exchanger 11, a flue gas exhaust pipe 19 is fixedly provided on the heat exchanger 11, and the third conveying pipe 1 7 is located below the desulfurization plate 4, and one end of the fourth conveying pipe 18 is located above the desulfurization plate 4. The dust collector 12 is a high-temperature bag dust collector. The tail gas emission pipe 14 is located at the rear of the tunnel kiln body 1. The gas generated by the tunnel kiln body 1 enters the first conveying pipe 15 from the tail gas emission pipe 14. The first conveying pipe 15 sends the flue gas to the heat exchanger 11, and then enters the dust collector 12 from the second conveying pipe 16 to remove the dust from the flue gas. The dust-removed flue gas enters the desulfurization tower 13 from the third conveying pipe 17 for desulfurization. The desulfurized flue gas enters the heat exchanger 11 again from the fourth conveying pipe 18 to increase the temperature of the desulfurized flue gas. The dust-removed flue gas is heated by the original flue gas temperature to reduce energy consumption and operating costs.
[0020] Embodiment 2: In Embodiment 1, there is still the problem of low desulfurization efficiency of the tunnel kiln tail gas desulfurization device. Therefore, based on Embodiment 1, this embodiment also includes:
[0021] In the specific implementation process, Figure 1 and Figure 2As shown, a feeding pipe 21 is fixedly provided on the loading barrel 2, and a delivery pump is provided in the loading barrel 2. The delivery pump is fixedly connected to the feeding pipe 21. Limestone powder is added with water to form a slurry as an absorbent which is loaded into the loading barrel 2, and the absorbent is delivered into the connecting pipe 3 through the delivery pump.
[0022] In the specific implementation process, Figure 3 and Figure 4 As shown, a connecting pipe 3 is fixedly provided at the upper end of the desulfurization tower 13, a fixing ring 31 is fixedly provided at the lower end of the connecting pipe 3, a rotating ring 32 is rotatably provided on the outer wall of the fixing ring 31, the rotating ring 32 is connected to the inner wall of the fixing ring 31, a plurality of circular rods 33 are fixedly provided on the upper surface of the rotating ring 32, a fixing frame 34 is fixedly provided on the upper surface of the desulfurization tower 13, a motor 35 is fixedly provided on the fixing frame 34, a driving ring 36 is fixedly provided at the output end of the motor 35, the driving ring 36 is meshed with the circular rod 33, a plurality of spray holes 37 are provided on the lower surfaces of the fixing ring 31 and the rotating ring 32, the output end of the motor 35 passes through the desulfurization tower 13, the lower end of the connecting pipe 3 is connected to the middle part of the fixing ring 31, the upper end of the connecting pipe 3 is fixedly connected to the upper end of the feeding pipe 21, a desulfurization plate 4 is fixedly provided in the desulfurization tower 13, the desulfurization plate 4 A plurality of fusion holes 41 are provided on the desulfurization plate 4. The upper surface of the desulfurization plate 4 is inclined. The two sides and one end of the desulfurization plate 4 are in contact with the inner wall of the desulfurization tower 13. After the flue gas enters the desulfurization tower 13, the absorbent enters the fixed ring 31 from the connecting pipe 3, and then enters the rotating ring 32 from the fixed ring 31. Finally, the absorbent is sprayed out from the spray hole 37 to allow the absorbent to fuse with the flue gas. The driving ring 36 is driven to rotate by the motor 35. The driving ring 36 drives the rotating ring 32 to rotate through the circular rod 33. When the rotating ring 32 rotates, the sprayed absorbent is driven to swing, increasing the area of sprinkling. Some absorbent will fall on the desulfurization plate 4, and the absorbent falling on the desulfurization plate 4 will fall from the fusion hole 41, and the flue gas passes upward through the fusion hole 41, so that the flue gas and the absorbent are fully fused.
[0023] Specifically, the working principle and operation method of the utility model are as follows:
[0024] Step 1: The gas generated by the tunnel kiln body 1 enters the first delivery pipe 15 from the tail gas exhaust pipe 14. The first delivery pipe 15 delivers the flue gas to the heat exchanger 11, and then enters the dust collector 12 from the second delivery pipe 16 to remove dust from the flue gas. The dust-removed flue gas enters the desulfurization tower 13 from the third delivery pipe 17 for desulfurization;
[0025] Step 2, after the flue gas enters the desulfurization tower 13, the absorbent enters the fixed ring 31 from the connecting pipe 3, and then enters the rotating ring 32 from the fixed ring 31, and finally the absorbent is sprayed out from the spray hole 37 to allow the absorbent to merge with the flue gas. The driving ring 36 is driven to rotate by the motor 35, and the driving ring 36 drives the rotating ring 32 to rotate through the circular rod 33. When the rotating ring 32 rotates, the sprayed absorbent is driven to swing, increasing the spilling area, and some absorbent will fall onto the desulfurization plate 4. The absorbent falling on the desulfurization plate 4 will fall from the fusion hole 41, and the flue gas passes upward through the fusion hole 41 to fully merge the flue gas and the absorbent.
[0026] The gas generated by the tunnel kiln body 1 of the utility model enters the heat exchanger 11 from the tail gas emission pipe 14, then enters the dust collector 12 for dust removal, and then enters the desulfurization tower 13 for desulfurization. The flue gas after desulfurization enters the heat exchanger 11 again, and the original flue gas temperature is used to heat the flue gas after dust removal, thereby reducing energy consumption and operating costs; the rotating ring 32 is driven to rotate by the motor 35. When the rotating ring 32 rotates, the sprayed absorbent is driven to swing, thereby increasing the area of sprinkling, and some absorbents will fall on the desulfurization plate 4. The absorbent falling on the desulfurization plate 4 will fall from the fusion hole 41, and the flue gas passes upward through the fusion hole 41, so that the flue gas and the absorbent are fully fused.
[0027] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A desulfurization device at the tail end of a tunnel kiln, comprising a tunnel kiln body (1), a heat exchanger (11), a dust collector (12), a desulfurization tower (13) and a charging barrel (2), characterized in that: The tunnel kiln body (1) is fixedly provided with an exhaust gas emission pipe (14), the exhaust gas emission pipe (14) is fixedly provided with a first delivery pipe (15), one end of the first delivery pipe (15) is fixedly connected to a heat exchanger (11), one end of the heat exchanger (11) is fixedly provided with a second delivery pipe (16), one end of the second delivery pipe (16) is connected to a dust collector (12), a third delivery pipe (17) is fixedly provided on the dust collector (12), one end of the third delivery pipe (17) is fixedly connected to a desulfurization tower (13), a fourth delivery pipe (18) is fixedly provided on the desulfurization tower (13), one end of the fourth delivery pipe (18) is connected to the heat exchanger (11), and a flue gas emission pipe (19) is fixedly provided on the heat exchanger (11).
2. A tunnel kiln tail desulfurization device according to claim 1, characterized in that: A feeding pipe (21) is fixedly provided on the charging barrel (2), a delivery pump is provided inside the charging barrel (2), and the delivery pump is fixedly connected to the feeding pipe (21).
3. A tunnel kiln tail desulfurization device according to claim 1, characterized in that: A connecting pipe (3) is fixedly provided at the upper end of the desulfurization tower (13), a fixing ring (31) is fixedly provided at the lower end of the connecting pipe (3), a rotating ring (32) is rotatably provided on the outer wall of the fixing ring (31), the rotating ring (32) is connected to the inner wall of the fixing ring (31), a plurality of circular rods (33) are fixedly provided on the upper surface of the rotating ring (32), a fixing frame (34) is fixedly provided on the upper surface of the desulfurization tower (13), a motor (35) is fixedly provided on the fixing frame (34), a driving ring (36) is fixedly provided at the output end of the motor (35), the driving ring (36) is meshed with the circular rod (33), and a plurality of spray holes (37) are provided on the lower surfaces of the fixing ring (31) and the rotating ring (32).
4. A tunnel kiln tail desulfurization device according to claim 1, characterized in that: A desulfurization plate (4) is fixedly arranged in the desulfurization tower (13), and a plurality of fusion holes (41) are opened on the desulfurization plate (4).
5. The desulfurization device at the tail of a tunnel kiln according to claim 3, characterized in that: The output end of the motor (35) passes through the desulfurization tower (13), the lower end of the connecting pipe (3) is connected to the middle of the fixing ring (31), and the upper end of the connecting pipe (3) is fixedly connected to the upper end of the feeding pipe (21).
6. A tunnel kiln tail desulfurization device according to claim 4, characterized in that: The upper surface of the desulfurization plate (4) is in an inclined shape, and both sides and one end of the desulfurization plate (4) are in contact with the inner wall of the desulfurization tower (13).
7. The desulfurization device at the tail of a tunnel kiln according to claim 1, characterized in that: One end of the third delivery pipe (17) is located below the desulfurization plate (4), and one end of the fourth delivery pipe (18) is located above the desulfurization plate (4).
8. The desulfurization device at the tail of a tunnel kiln according to claim 1, characterized in that: The dust collector (12) is a high-temperature bag dust collector, and the tail gas discharge pipe (14) is located at the rear of the tunnel kiln body (1).