Tail gas denitration device for vehicle bottom type roasting furnace
By introducing a dust collector, heat exchanger, and multi-stage adsorption device into the exhaust gas treatment system of the undercarriage roasting furnace, the problem of catalyst blockage caused by dust in the exhaust gas was solved, achieving efficient multi-stage denitrification treatment and ensuring the service life and denitrification effect of the catalyst.
Patent Information
- Application Number
- CN202423022512.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-09
- Publication Date
- 2025-11-11
- Estimated Expiration
- 2034-12-09
AI Technical Summary
Existing denitrification treatment devices for undercarriage roasting furnace exhaust gas are prone to clogging and failure of the denitrification tower catalyst when treating exhaust gas containing a lot of dust, and the treatment effect is limited.
The system employs a combination of a dust collector, heat exchanger, and multi-stage adsorption device with an SCR denitrification tower. First, the dust is removed by the dust collector, then cooled by the heat exchanger, and then multi-stage adsorption is performed using activated carbon packing in the multi-stage adsorption device. Finally, the denitrification process is completed in the SCR denitrification tower.
It effectively avoids catalyst clogging, extends catalyst lifespan, improves denitrification effect, and ensures the adsorption effect of activated carbon packing, achieving multi-stage treatment and improving the denitrification efficiency of exhaust gas.
Smart Images
Figure CN223530184U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of denitrification device technology, and in particular to a denitrification device for tail gas from a car-bottom type roasting furnace. Background Technology
[0002] Bottom-mounted roasting furnaces are commonly used production equipment in the roasting process of special carbon. However, they generate a lot of exhaust gas during operation, which would pollute the environment if directly emitted, contradicting the concept of environmentally friendly production. Therefore, the exhaust gas from bottom-mounted roasting furnaces needs to undergo denitrification treatment before emission to meet relevant environmental protection requirements. However, existing exhaust gas denitrification devices generally pass the exhaust gas directly into a denitrification tower for treatment. But the exhaust gas from bottom-mounted roasting furnaces contains a lot of dust, which can easily have an adverse effect on the catalyst in the denitrification tower, causing blockage or even failure of the catalyst packing layer. Furthermore, treatment by the denitrification tower alone has limited effectiveness and room for improvement. Therefore, this application proposes a denitrification device for exhaust gas from bottom-mounted roasting furnaces. Utility Model Content
[0003] In view of the above situation and to overcome the defects of the prior art, this utility model provides a denitrification device for the tail gas of a car-bottom type roasting furnace. The technical solution it solves is as follows: it includes a roasting furnace body, characterized in that the discharge end of the roasting furnace body is fixedly connected to the inlet end of a dust collector, the outlet end of the dust collector is fixedly connected to the inlet end of a first fan, the outlet end of the first fan is fixedly connected to the inlet end of a heat exchanger, the outlet end of the heat exchanger is fixedly connected to the inlet end of a second fan, the outlet end of the second fan is fixedly connected to the inlet end of an adsorption device, the outlet end of the adsorption device is fixedly connected to the inlet end of a third fan, and the outlet end of the third fan is fixedly connected to the inlet end of an SCR denitrification tower.
[0004] The adsorption device includes a frame located on one side of the second fan. Three horizontally evenly distributed clamps are integrally arranged on the frame. From left to right, the three clamps sequentially and fixedly connect a first adsorption cylinder, a second adsorption cylinder, and a third adsorption cylinder. The inlet end of the first adsorption cylinder is fixedly connected to the outlet end of the second fan; the outlet end of the first adsorption cylinder is fixedly connected to the inlet end of the second adsorption cylinder; the outlet end of the second adsorption cylinder is fixedly connected to the inlet end of the third adsorption cylinder; and the outlet end of the third adsorption cylinder is fixedly connected to the inlet end of the third fan. The second and third adsorption cylinders are both composed of a cylinder body and a cylinder cover flange. Each cylinder body has a support frame coaxially fixedly connected to its inner wall. Each support frame coaxially abuts against a hollow shell. Each hollow shell is filled with activated carbon filler. Each cylinder body has a rotating shaft coaxially rotatably connected to its lower end. Each rotating shaft is coaxially fixedly connected to multiple vertically distributed dispersing impellers that cooperate with the hollow shells on their corresponding sides. Each rotating shaft has a driven bevel gear coaxially fixedly connected to its lower end. The frame is equipped with a drive device that engages with each driven bevel gear.
[0005] Preferably, the drive device includes two support plates arranged opposite each other and fixedly connected to the frame. The opposite ends of the two support plates are rotatably connected to a power shaft. Multiple active bevel gears are coaxially fixedly connected to the power shaft. The active bevel gears and driven bevel gears correspond one-to-one and mesh with each other. The support plate on the right is fixedly connected to a drive motor for driving the power shaft.
[0006] The beneficial effects of this utility model are:
[0007] 1. When this application is in use, the exhaust gas from the calcination furnace body first enters the dust collector to remove dust, avoiding excessive dust from entering the SCR denitrification tower and causing blockages and other adverse effects on the catalyst and other components therein, thereby ensuring the service life and effectiveness of the corresponding catalyst in the SCR denitrification tower, and ensuring the effectiveness of the SCR denitrification tower.
[0008] 2. In the process of use, the exhaust gas after dust removal by the dust collector first enters the heat exchanger for cooling to prevent excessively high exhaust gas temperature from causing deactivation of the activated carbon packing in the adsorption device, thereby ensuring the adsorption effect of the activated carbon packing and its denitrification effect. Furthermore, each of the aforementioned cylinders is coaxially rotatably connected to a rotating shaft. Under the action of the driving device, the rotating shaft can rotate continuously, driving the dispersing impeller to rotate synchronously. The rotation of the dispersing impeller will evenly distribute the exhaust gas entering the cylinder, thereby maximizing the contact between the exhaust gas and the activated carbon packing, thus ensuring the adsorption and denitrification effect of the activated carbon packing on the exhaust gas. Therefore, with the cooperation of the adsorption device and the SCR denitrification tower, the exhaust gas can be treated in multiple stages to ensure the denitrification effect. Attached Figure Description
[0009] Figure 1 This is the front view of the present utility model.
[0010] Figure 2 This is a three-dimensional view of the adsorption device of this utility model.
[0011] Figure 3 This is a front sectional view of the adsorption device of this utility model.
[0012] Figure 4 This is a partial three-dimensional sectional view from the first perspective of this utility model.
[0013] Figure 5 This is a partial stereoscopic view of the present invention from a second perspective.
[0014] Figure Labels
[0015] 1. Roasting furnace body; 2. Dust collector; 3. First fan; 4. Heat exchanger; 5. Second fan; 6. Adsorption device; 7. Third fan; 8. SCR denitrification tower; 9. Frame; 10. Clamp; 11. First adsorption cylinder; 12. Second adsorption cylinder; 13. Third adsorption cylinder; 14. Cylinder body; 15. Cylinder cover; 16. Support frame; 17. Hollowed-out shell; 18. Activated carbon packing; 19. Rotating shaft; 20. Dispersion impeller; 21. Driven bevel gear; 22. Drive device; 23. Support plate; 24. Power shaft; 25. Driven bevel gear; 26. Drive motor. Detailed Implementation
[0016] The following is in conjunction with the appendix Figure 1-5 The specific embodiments of this utility model will be described in further detail.
[0017] In Example 1, the technical solution is as follows: During use, the exhaust gas from the calcination furnace body 1 first enters the dust collector 2 to remove dust, preventing excessive dust from entering the SCR denitrification tower 8 and causing blockages or other adverse effects on the catalyst and other components. This ensures the service life and effectiveness of the corresponding catalyst in the SCR denitrification tower 8, and thus ensures the effectiveness of the SCR denitrification tower 8. During use, the exhaust gas after dust removal by the dust collector 2 first enters the heat exchanger 4 for cooling, preventing excessively high exhaust gas temperatures from deactivating the activated carbon packing 18 in the adsorption device 6. This ensures the adsorption effect of the activated carbon packing 18 and the denitrification effect of the activated carbon packing. Furthermore, each of the cylinders 14 is coaxially rotatably connected to a rotating shaft 19. Under the action of the driving device 22, the rotating shaft 19 can rotate continuously. The rotation of the rotating shaft 19 will drive the dispersing impeller 20 to rotate synchronously. The rotation of the dispersing impeller 20 will evenly distribute the exhaust gas entering the cylinder 14, so that the exhaust gas can contact the activated carbon packing to the maximum extent, thereby ensuring the adsorption and denitrification effect of the activated carbon packing 18 on the exhaust gas. In addition, with the cooperation of the adsorption device 6 and the SCR denitrification tower 8, the exhaust gas can be treated in multiple stages to ensure the denitrification effect.
[0018] In Example 2, based on Example 1, this application includes a first fan 3, a second fan 5, and a third fan 7. The operation of these three fans ensures the normal flow of exhaust gas within the application, thereby enabling denitrification treatment of the exhaust gas. Specifically, during use, the exhaust gas generated by the roasting furnace body 1 first enters the dust collector 2 for dust suppression, removing most of the dust. After dust suppression, the exhaust gas, under the action of the first fan 3, enters the heat exchanger 4 from the dust collector 2 for further cooling, preventing excessively high exhaust gas temperatures that could deactivate the activated carbon packing in the subsequent adsorption device 6.
[0019] The cooled exhaust gas then enters the adsorption device 6 under the action of the second fan 5. The adsorption device 6 mainly consists of a first adsorption cylinder 11, a second adsorption cylinder 12, and a third adsorption cylinder 13, which are fixedly connected to the clamp 10. Each of the three adsorption cylinders has a hollow shell 17 installed in its body 14 through a support frame 16, and each hollow shell 17 is filled with activated carbon filler. Thus, as the exhaust gas flows through the three adsorption cylinders, the activated carbon filler can perform multi-stage treatment on the exhaust gas to ensure the adsorption effect of the exhaust gas.
[0020] Furthermore, to enhance the adsorption effect of activated carbon, each cylinder 14 is rotatably connected to a rotating shaft 19 at its bottom, and a drive device 22 is arranged on the frame 9 to drive the rotating shaft 19 to rotate. Specifically, when the drive motor 26 located on the support plate 23 in the drive device 22 is started, the drive motor 26 will drive the power shaft 24 to rotate. The rotation of the power shaft 24 will drive the active bevel gear 25 to rotate. The rotation of the active bevel gear 25 will drive the rotating shaft 19 to rotate through the driven bevel gear 21. The rotation of the rotating shaft 19 will also cause the dispersing impeller 20 on the rotating shaft 19 to rotate synchronously. The rotation of the dispersing impeller 20 can evenly distribute the exhaust gas in the cylinder 14, so that the exhaust gas can fully contact the activated carbon packing, thereby greatly improving the adsorption effect of the activated carbon packing.
[0021] Under the combined action of the second fan 5 and the third fan 7, the exhaust gas discharged from the heat exchanger 4 will pass through the first adsorption cylinder 11, the second adsorption cylinder 12 and the third adsorption cylinder 13 in sequence. Then, under the action of the activated carbon packing 18 in each cylinder 14, it can undergo preliminary adsorption and denitrification. After that, the exhaust gas enters the SCR denitrification tower 8 for final denitrification, thus ensuring the denitrification treatment of the exhaust gas. After that, the exhaust gas can be discharged from the SCR denitrification tower 8.
[0022] In Example 3, based on Example 2, the first adsorption cylinder 11, the second adsorption cylinder 12, and the third adsorption cylinder 13 are all connected by a cylinder body 14 and a cylinder cover 15 flange, which facilitates disassembly and allows for replacement of the activated carbon filler.
Claims
1. A denitrification device for exhaust gas from a car-bottom type calcining furnace, comprising a calcining furnace body (1), characterized in that, The discharge end of the roasting furnace body (1) is fixedly connected to the inlet end of the dust collector (2), the outlet end of the dust collector (2) is fixedly connected to the inlet end of the first fan (3), the outlet end of the first fan (3) is fixedly connected to the inlet end of the heat exchanger (4), the outlet end of the heat exchanger (4) is fixedly connected to the inlet end of the second fan (5), the outlet end of the second fan (5) is fixedly connected to the inlet end of the adsorption device (6), the outlet end of the adsorption device (6) is fixedly connected to the inlet end of the third fan (7), and the outlet end of the third fan (7) is fixedly connected to the inlet end of the SCR denitrification tower (8). The adsorption device (6) includes a frame (9) located on one side of the second fan (5). Three clamps (10) are integrally arranged on the frame (9) and are evenly distributed in the transverse direction. The three clamps (10) are fixedly connected to the first adsorption cylinder (11), the second adsorption cylinder (12), and the third adsorption cylinder (13) from left to right. The inlet end of the first adsorption cylinder (11) is fixedly connected to the outlet end of the second fan (5), the outlet end of the first adsorption cylinder (11) is fixedly connected to the inlet end of the second adsorption cylinder (12), the outlet end of the second adsorption cylinder (12) is fixedly connected to the inlet end of the third adsorption cylinder (13), and the outlet end of the third adsorption cylinder (13) is fixedly connected to the inlet end of the third fan (7). The first adsorption cylinder (11) and the second adsorption cylinder... (12) and the third adsorption cylinder (13) are both composed of a cylinder body (14) and a cylinder cover (15) flange connection. Each cylinder body (14) has a support frame (16) coaxially fixedly connected to its inner wall. Each support frame (16) coaxially abuts against a hollow shell (17). Each hollow shell (17) is filled with activated carbon filler (18). Each cylinder body (14) has a rotating shaft (19) coaxially rotatably connected to its lower end. Each rotating shaft (19) has multiple dispersion impellers (20) coaxially fixedly connected to each other in a vertical direction and used in conjunction with the hollow shell (17) on its corresponding side. Each rotating shaft (19) has a driven bevel gear (21) coaxially fixedly connected to its lower end. Each driven bevel gear (21) is arranged on the frame (9) with a drive device (22) meshing with each driven bevel gear (21).
2. The denitrification device for tail gas of a car-bottom type roasting furnace according to claim 1, characterized in that, The drive device (22) includes two support plates (23) arranged opposite to each other and fixedly connected to the frame (9). The two support plates (23) are rotatably connected to a power shaft (24) at opposite ends. The power shaft (24) is coaxially fixedly connected to a plurality of active bevel gears (25). The active bevel gears (25) correspond one-to-one with the driven bevel gears (21) and mesh with each other. The support plate (23) on the right side is fixedly connected to a drive motor (26) for driving the power shaft (24).