A multi-stage heat energy recovery filter device for carbonization tail gas

Abstract

The utility model discloses a kind of carbon tail gas multistage heat energy recovery filtering devices, belong to carbon tail gas recovery technical field, including negative pressure filter box, the negative pressure filter box front side lower end is fixedly connected with exhaust duct, and negative pressure filter box right side upper end is fixedly connected with collection box, and negative pressure filter box rear side upper end is fixedly connected with motor, while motor output end is fixedly connected with rotating shaft;The rotating shaft rotation is arranged in the negative pressure filter box inside, and the inner wall of negative pressure filter box is provided with baffle by reciprocating sliding component. The carbon tail gas multistage heat energy recovery filtering device, by setting filter component and limiting rod, not only increase the contact area of filter component and tail gas, increase the contact time with particle in tail gas simultaneously, improve the particle removal efficiency, avoid the accumulation of particle on filter component, ensure that filter component always maintains good working condition, continuously and effectively remove particle in tail gas.

Description

Technical Field

[0001] This utility model relates to the field of charcoal production tail gas recovery technology, specifically a multi-stage heat energy recovery and filtration device for charcoal production tail gas. Background Technology

[0002] Carbon production tail gas recovery is a technical system for the resource utilization and environmental protection treatment of tail gas generated in carbon black production and other carbon production processes. Its core objective is to achieve energy conservation, emission reduction, and improved economic benefits through waste heat recovery, component separation, and reuse. When carbonizing materials using a carbonization furnace, natural gas is typically used to ignite and dry the material to 1000-1200℃ in the combustion chamber. Then, an induced draft fan draws the high-temperature heat source and flue gas together into the carbonization furnace, creating a temperature gradient from the furnace head to the furnace tail to meet the requirements of the carbonization process. During the use of carbonization equipment, the high-temperature flue gas generated is mostly discharged directly into the atmosphere after desulfurization treatment, resulting in low flue gas heat utilization and waste of fuel resources and high energy consumption in activated carbon production.

[0003] To overcome the above-mentioned defects, the prior art (Chinese patent application number 202223482527.1, application date 2022-12-23) provides a device for efficient recovery and utilization of tail gas heat energy during charcoal making. The device includes a tail gas filter chamber, an air inlet hopper connected to the left side of the filter chamber, an air inlet pipe connected to the air inlet of the air inlet hopper, an air outlet hopper connected to the right side of the filter chamber, an air outlet pipe connected to the air outlet of the air outlet hopper, an opening / closing component for opening and closing the air outlet pipe on the air outlet hopper, multiple jet nozzles evenly spaced on the lower surface of the air outlet pipe, a conveyor belt for conveying bamboo charcoal located below the air outlet pipe, and the conveyor belt positioned directly below the jet nozzles. A filter element is installed inside the tail gas filter chamber. This device can recover and filter high-temperature gas generated during charcoal making and then reuse it in the bamboo charcoal carbonization process.

[0004] To maintain the operation of the device, it is necessary to frequently clean solid particles from components such as pipes, heat exchangers, and fans. This will consume a lot of manpower, resources, and time. At the same time, due to wear and damage to components, more frequent repairs or replacements are required, increasing maintenance costs. During use, the device cannot effectively remove solid particles generated in the exhaust gas, causing solid particles to enter the heat exchanger with the airflow. These particles will gradually accumulate on the inner wall of the heat exchanger pipes, reducing the amount of exhaust gas filtered per unit time and significantly decreasing filtration efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a multi-stage heat recovery filtration device for charcoal production tail gas, in order to solve the problem mentioned in the background art that it is impossible to effectively remove solid particles generated in the tail gas, causing solid particles to enter the heat exchanger with the airflow, and these particles will gradually accumulate on the inner wall of the heat exchanger pipes, which will reduce the amount of tail gas passing through the filter per unit time and significantly reduce the filtration efficiency.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a multi-stage heat recovery filtration device for charcoal production tail gas, comprising a negative pressure filter box, an exhaust pipe fixedly connected to the lower front end of the negative pressure filter box, a collection box fixedly connected to the upper right side end of the negative pressure filter box, and a motor fixedly connected to the upper rear end of the negative pressure filter box, with a rotating shaft fixedly connected to the output end of the motor; the rotating shaft is rotatably disposed inside the negative pressure filter box, and a baffle is provided on the inner wall of the negative pressure filter box via a reciprocating sliding assembly, with a limiting rod fixedly connected to the surface of the baffle, and a filter assembly slidably connected to the limiting rod; a sliding rod is provided on the inner wall of the negative pressure filter box via a reciprocating adsorption assembly, and an activated carbon adsorption assembly is slidably connected to the sliding rod, with the activated carbon adsorption assembly slidably disposed inside the negative pressure filter box.

[0007] Preferably, the rotating shafts are symmetrically distributed about the center of the negative pressure filter box, and the rotating shaft surface is fixedly connected with protrusions, which are rotatably disposed inside the negative pressure filter box.

[0008] Preferably, the reciprocating sliding assembly includes a fixed post fixedly connected to the surface of the filter assembly, and the upper surface of the fixed post near the protrusion is arc-shaped, and a connecting plate is fixedly connected to the end of the fixed post.

[0009] Preferably, a fixing plate is fixedly connected to the inner wall of the negative pressure filter box, and a connecting rod is fixedly connected to the upper end of the fixing plate, and the connecting rod is slidably connected through the connecting plate.

[0010] Preferably, one end of a buffer spring is fixedly connected to the lower surface of the connecting plate, and the other end of the buffer spring is fixedly connected to the fixing plate.

[0011] Preferably, a connecting shaft is rotatably provided inside the negative pressure filter box, and belts are sleeved and connected to both the surface of the connecting shaft and the surface of the rotating shaft. A drive shaft is rotatably provided inside the negative pressure filter box, and bevel gears are fixedly connected to both the surface of the drive shaft and the surface of the connecting shaft.

[0012] Preferably, the reciprocating adsorption assembly includes a cylinder fixedly connected to the surface of the drive shaft, and a sliding groove is provided inside the cylinder. The surface of the sliding groove is spiral, and a support frame is slidably connected to the surface of the sliding groove. At the same time, the activated carbon adsorption assembly is fixedly connected to the surface of the support frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the multi-stage heat energy recovery and filtration device for charcoal production tail gas adopts a novel structural design, the specific details of which are as follows: (1) The multi-stage heat recovery filtration device for charcoal production tail gas, through the filter components and limiting rods, not only increases the contact area between the filter components and the tail gas, but also increases the contact time with the particles in the tail gas, improves the particle removal efficiency, avoids the accumulation of particles on the filter components, and ensures that the filter components always maintain a good working state and continuously and effectively removes particles from the tail gas.

[0014] Furthermore, it promotes the sliding of particles off the surface of the filter element, making the filter element less prone to clogging by particles, extending the service life of the filter element, and improving the operational stability and reliability of the device.

[0015] (2) The multi-stage heat recovery filtration device for charcoal production tail gas, through the activated carbon adsorption components and sliding rods, can ensure that the tail gas can fully contact the activated carbon at different positions, increasing the contact area between the activated carbon and the harmful substances in the tail gas, and more comprehensively adsorbing the harmful gases, odors and tiny particles in the tail gas, thereby improving the adsorption efficiency and purification effect.

[0016] Furthermore, it avoids the phenomenon of rapid adsorption saturation in local areas due to concentrated exhaust gas passage, extends the service life of the entire activated carbon adsorption component, reduces the frequency of replacing the entire activated carbon due to adsorption saturation in some areas, and lowers operating costs.

[0017] (3) The multi-stage heat recovery filtration device for charcoal production tail gas improves the stability of the device during operation through the set collection box and exhaust pipe. It can not only prevent the tail gas from flowing randomly or backflowing inside the device, but also reduce the airflow resistance and turbulence. The collection box can effectively collect the dust, charcoal residue and other solid pollutants separated from the tail gas during the filtration process, ensuring the cleanliness of the internal environment of the device and helping to maintain the normal operation of each component. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the connection structure between the negative pressure filter box and the collection box of this utility model.

[0019] Figure 2 This is a schematic diagram of the connection structure between the electric motor and the rotating shaft of this utility model.

[0020] Figure 3 This is a schematic diagram of the connection structure between the protrusion and the rotating shaft of this utility model.

[0021] Figure 4 This is a schematic diagram of the connection structure between the baffle and the limiting rod of this utility model.

[0022] Figure 5This utility model Figure 4 Enlarged structural diagram at point A in the middle.

[0023] Figure 6 This is a schematic diagram of the connection structure between the bevel gear and the transmission shaft of this utility model.

[0024] Figure 7 This is a schematic diagram of the connection structure between the support frame and the sliding groove of this utility model.

[0025] In the diagram: 1. Negative pressure filter box; 2. Exhaust pipe; 3. Collection box; 4. Motor; 5. Rotating shaft; 6. Protrusion; 7. Baffle; 8. Limiting rod; 9. Filter assembly; 10. Fixed column; 11. Connecting plate; 12. Fixed plate; 13. Connecting rod; 14. Buffer spring; 15. Connecting shaft; 16. Drive shaft; 17. Bevel gear; 18. Cylinder; 19. Sliding groove; 20. Sliding rod; 21. Activated carbon adsorption assembly; 22. Support frame. Detailed Implementation

[0026] 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.

[0027] Example 1: By using the exhaust pipe 2, negative pressure filter box 1, and limiting rod 8, not only can the disorderly flow or backflow of exhaust gas within the device be prevented, but also the airflow resistance and turbulence can be reduced. Figures 1-2 As shown: It includes a negative pressure filter box 1, an exhaust pipe 2 is fixedly connected to the lower front end of the negative pressure filter box 1, a collection box 3 is fixedly connected to the upper right side end of the negative pressure filter box 1, and a motor 4 is fixedly connected to the upper rear end of the negative pressure filter box 1. At the same time, a rotating shaft 5 is fixedly connected to the output end of the motor 4. The rotating shaft 5 is rotatably disposed inside the negative pressure filter box 1. A baffle 7 is provided on the inner wall of the negative pressure filter box 1 through a reciprocating sliding assembly. A limit rod 8 is fixedly connected to the surface of the baffle 7. At the same time, a filter assembly 9 is slidably connected through the limit rod 8. A sliding rod 20 is provided on the inner wall of the negative pressure filter box 1 through a reciprocating adsorption assembly. An activated carbon adsorption assembly 21 is slidably disposed inside the negative pressure filter box 1.

[0028] The staff placed the device in the designated location and started it. The exhaust gas generated during charcoal production was transported into the negative pressure filter box 1. The negative pressure environment created by the filter box 1 facilitated the rapid entry of the exhaust gas and formed a directional flow within the box, preventing disordered flow or backflow. The exhaust gas first entered the heat exchanger, and cold water circulated between the heat exchanger and the heat storage device via a circulating pump, transferring the recovered heat for utilization (e.g., Figure 1 As shown), simultaneously, the motor 4 drives the filter assembly 9, which slides back and forth inside the negative pressure filter box 1 under the constraint of the limiting rod 8, intercepting and filtering solid particles in the exhaust gas. The surface of the filter assembly 9 is inclined, causing the intercepted particles to fall out of the negative pressure filter box 1 under the influence of gravity and the movement of the filter assembly 9, eventually entering the collection box 3 for collection. The activated carbon adsorption assembly 21, utilizing the adsorption properties of activated carbon, adsorbs harmful gases and fine particles in the filtered exhaust gas, further purifying the exhaust gas (e.g., ...). Figure 2 As shown in the figure, to improve adsorption efficiency and purification effect, the exhaust gas after dual treatment of filtration and adsorption is discharged from the negative pressure filter box 1 through the exhaust pipe 2.

[0029] In Example 2, unlike Example 1, the fixed column 10, connecting rod 13, and fixed plate 12 not only increase the contact area between the filter assembly 9 and the exhaust gas, but also increase the contact time with particles in the exhaust gas. Figures 3-5 As shown: the rotating shaft 5 is symmetrically distributed about the center of the negative pressure filter box 1, and the surface of the rotating shaft 5 is fixedly connected to the protrusion 6. The protrusion 6 is rotatably set inside the negative pressure filter box 1. The reciprocating sliding assembly includes a fixed column 10 fixedly connected to the surface of the filter assembly 9. The upper surface of the fixed column 10 near the protrusion 6 is arc-shaped, and the end of the fixed column 10 is fixedly connected to the connecting plate 11. The inner wall of the negative pressure filter box 1 is fixedly connected to the fixed plate 12, and the upper end of the fixed plate 12 is fixedly connected to the connecting rod 13. The connecting rod 13 slides through the connecting plate 11. The lower surface of the connecting plate 11 is fixedly connected to one end of the buffer spring 14, and the other end of the buffer spring 14 is fixedly connected to the fixed plate 12.

[0030] As the exhaust gas enters the negative pressure filter box 1, the operator starts the motor 4. The motor 4 drives the output shaft 5 to rotate inside the negative pressure filter box 1, and also drives the protrusions 6 on the surface of the shaft 5 to rotate inside the negative pressure filter box 1 (e.g., Figure 3 As shown), when the protrusion 6 contacts the fixed post 10, the protrusion 6 pushes the fixed post 10 and the filter assembly 9. Under the constraint of the limiting rod 8, the filter assembly 9 slides inside the negative pressure filter box 1. At the same time, it drives the connecting plate 11 at the end of the fixed post 10. Under the constraint of the connecting rod 13, it drives the buffer spring 14 on the surface of the connecting plate 11 to retract towards the surface of the fixed plate 12. When the protrusion 6 moves away from the fixed post 10 (as shown), Figure 4and Figure 5 As shown, the buffer spring 14 pushes the filter assembly 9 to reset, which not only increases the contact area between the filter assembly 9 and the exhaust gas, but also increases the contact time with particles in the exhaust gas, thereby improving the particle removal efficiency and preventing the accumulation of particles on the filter assembly 9.

[0031] In Example 3, unlike Example 2, the bevel gear 17, cylinder 18, and activated carbon adsorption assembly 21 ensure that the exhaust gas can fully contact the activated carbon at different locations, increasing the contact area between the activated carbon and harmful substances in the exhaust gas. Figures 6-7 As shown: A connecting shaft 15 is rotatably installed inside the negative pressure filter box 1, and belts are sleeved and connected to both the surface of the connecting shaft 15 and the surface of the rotating shaft 5. A drive shaft 16 is rotatably installed inside the negative pressure filter box 1, and bevel gears 17 are fixedly connected to both the surface of the drive shaft 16 and the surface of the connecting shaft 15. The reciprocating adsorption assembly includes a cylinder 18 fixedly connected to the surface of the drive shaft 16, and a sliding groove 19 is opened inside the cylinder 18. The surface of the sliding groove 19 is spiral, and a support frame 22 is slidably connected to the surface of the sliding groove 19. An activated carbon adsorption assembly 21 is fixedly connected to the surface of the support frame 22.

[0032] A belt is installed on the surfaces of the rotating shaft 5 and the connecting shaft 15. The belt drive causes the motor 4 to rotate the rotating shaft 5 inside the negative pressure filter box 1 when it is working. Furthermore, the bevel gears 17 on the surfaces of the transmission shaft 16 and the connecting shaft 15 cause the rotating shaft 5 to rotate the transmission shaft 16 inside the negative pressure filter box 1 when it is working (e.g., ...). Figure 6 As shown), with the rotation of the drive shaft 16, the support frame 22 slides along the surface of the spiral sliding groove 19 inside the cylinder 18, and slides through the activated carbon adsorption assembly 21 via the sliding rod 20. Under the constraint of the sliding rod 20, the activated carbon adsorption assembly 21 slides back and forth inside the negative pressure filter box 1 (as shown). Figure 7 As shown in the figure, when harmful gas molecules and tiny particles in the charcoal production exhaust come into contact with activated carbon, they will enter these pores due to molecular thermal motion. Smaller gas molecules, such as sulfur dioxide and nitrogen oxides, are easily captured by micropores, while larger particles may be trapped by mesopores and macropores. This physical adsorption based on pore structure is an important way for activated carbon to purify exhaust gas and can effectively remove a variety of pollutants from the exhaust gas.

[0033] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage heat recovery filtration device for charcoal production tail gas, comprising a negative pressure filter box (1), wherein an exhaust pipe (2) is fixedly connected to the lower front end of the negative pressure filter box (1), and a collection box (3) is fixedly connected to the upper right side of the negative pressure filter box (1), and an electric motor (4) is fixedly connected to the upper rear end of the negative pressure filter box (1), and a rotating shaft (5) is fixedly connected to the output end of the electric motor (4). Its features are: The rotating shaft (5) is rotatably disposed inside the negative pressure filter box (1), and the inner wall of the negative pressure filter box (1) is provided with a baffle (7) through a reciprocating sliding assembly, and a limiting rod (8) is fixedly connected to the surface of the baffle (7), while the limiting rod (8) is slidably connected to the filter assembly (9). The inner wall of the negative pressure filter box (1) is provided with a sliding rod (20) through a reciprocating adsorption assembly, and the sliding rod (20) is slidably connected to an activated carbon adsorption assembly (21), and the activated carbon adsorption assembly (21) is slidably disposed inside the negative pressure filter box (1).

2. The multi-stage heat recovery and filtration device for charcoal production tail gas according to claim 1, characterized in that: The rotating shaft (5) is symmetrically distributed about the center of the negative pressure filter box (1), and a protrusion (6) is fixedly connected to the surface of the rotating shaft (5), and the protrusion (6) is rotatably disposed inside the negative pressure filter box (1).

3. The multi-stage heat recovery and filtration device for charcoal production tail gas according to claim 2, characterized in that: The reciprocating sliding assembly includes a fixed post (10) fixedly connected to the surface of the filter assembly (9), and the upper surface of the fixed post (10) near the protrusion (6) is arc-shaped, and a connecting plate (11) is fixedly connected to the end of the fixed post (10).

4. The multi-stage heat recovery and filtration device for charcoal production tail gas according to claim 3, characterized in that: The inner wall of the negative pressure filter box (1) is fixedly connected to a fixing plate (12), and the upper end of the fixing plate (12) is fixedly connected to a connecting rod (13), and the connecting rod (13) is slidably connected through the connecting plate (11).

5. The multi-stage heat recovery and filtration device for charcoal production tail gas according to claim 4, characterized in that: One end of a buffer spring (14) is fixedly connected to the lower surface of the connecting plate (11), and the other end of the buffer spring (14) is fixedly connected to the fixing plate (12).

6. The multi-stage heat recovery and filtration device for charcoal production tail gas according to claim 1, characterized in that: The negative pressure filter box (1) is rotatably provided with a connecting shaft (15), and belts are sleeved and connected to both the surface of the connecting shaft (15) and the surface of the rotating shaft (5). The negative pressure filter box (1) is rotatably provided with a transmission shaft (16), and bevel gears (17) are fixedly connected to both the surface of the transmission shaft (16) and the surface of the connecting shaft (15).

7. The multi-stage heat recovery filtration device for charcoal production tail gas according to claim 6, characterized in that: The reciprocating adsorption assembly includes a cylinder (18) fixedly connected to the surface of the drive shaft (16), and a sliding groove (19) is provided inside the cylinder (18). The surface of the sliding groove (19) is spiral, and a support frame (22) is slidably connected to the surface of the sliding groove (19). At the same time, the activated carbon adsorption assembly (21) is fixedly connected to the surface of the support frame (22).

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