High efficiency pyrolysis carbonization rotary furnace tube

Abstract

The utility model relates to the technical field of pyrolysis carbonization's rotary furnace tube, disclose a kind of pyrolysis carbonization's rotary furnace tube of high efficiency, including rotary furnace tube, both ends in the rotary furnace tube are provided with three spiral structure, heat conduction groove is provided in the rotary furnace tube, one end of the rotary furnace tube is provided with spiral guide plate, the one end of spiral guide plate away from rotary furnace tube is connected with barrel three, the utility model reduces internal temperature difference, can effectively increase internal pyrolysis temperature, the arc design of heat conduction groove, can effectively replace material lifting plate, and reduce the raising of dust, the design of multiple heat conduction grooves, can effectively increase the strength of rotary furnace tube, prolong service life, avoid material return to smoke collection cover simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of rotary furnace tube technology for pyrolysis and carbonization, specifically to a rotary furnace tube for high-efficiency pyrolysis and carbonization. Background Technology

[0002] In the field of pyrolysis carbonization technology, rotary kiln tubes are core equipment, and their performance directly affects production efficiency, finished product quality, and process continuity. Currently, the rotary kiln tubes widely used in the industry are mostly based on the traditional structure of "guide plates + lifting plates." However, this structure has gradually revealed many insurmountable problems in actual operation, seriously restricting the further development of pyrolysis carbonization technology. Specifically, the limitations of the traditional structure are mainly reflected in the following aspects: First, in terms of heat source utilization and heat transfer efficiency, this structure cannot effectively utilize the heat source, resulting in a large temperature difference between the inside and outside of the furnace tube. This makes it difficult for the pyrolysis carbonization reaction to proceed in a uniform and stable temperature environment, directly causing low pyrolysis carbonization efficiency. It also results in significant fluctuations in the quality of the final product, failing to meet the requirements of high-quality, standardized production. Second, from the perspective of equipment stability, the traditional structure has not specifically optimized the strength of the furnace tube, making it prone to deformation. This not only shortens the service life of the equipment and increases maintenance costs but may also cause secondary problems such as poor material conveying due to structural deformation. More importantly, the lifting plate design in traditional structures significantly increases dust generation during material handling. Large amounts of dust enter the subsequent piping system with the flue gas, easily causing blockages and forcing production interruptions for cleaning, severely impacting continuous process operation. Simultaneously, this structure also suffers from significant material return issues. This return further exacerbates dust generation, not only worsening pipe blockages but also significantly increasing the difficulty and frequency of cleaning, drastically reducing production efficiency. Utility Model Content

[0003] The purpose of this invention is to address the shortcomings of existing technologies by proposing a rotary kiln tube for efficient pyrolysis and carbonization.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: a rotary furnace tube for high-efficiency pyrolysis and carbonization, comprising a rotary furnace tube, wherein both ends of the rotary furnace tube are provided with a triple spiral structure, a heat conduction groove is provided inside the rotary furnace tube, a spiral guide plate is provided at one end of the rotary furnace tube, and a cylinder is connected to the end of the spiral guide plate away from the rotary furnace tube.

[0005] As a further description of the above technical solution:

[0006] The end of the rotary kiln tube furthest from the cylinder body three is connected to the cylinder body one via flange two, and flange one is connected to the outer side of the cylinder body one.

[0007] As a further description of the above technical solution:

[0008] The triple helix structure includes a helical plate with three helices, and the lead length of the helical plate is 1.5m.

[0009] As a further description of the above technical solution:

[0010] The heat-conducting groove includes a spiral box, and several sets of spiral boxes are provided. The spiral boxes are installed inside the rotary furnace tube at a special angle.

[0011] As a further description of the above technical solution:

[0012] The spiral box is designed in an arc shape, and the interior of the spiral box is equipped with reinforcing ribs to increase the internal heat-receiving area.

[0013] As a further description of the above technical solution:

[0014] The spiral guide plate includes a variable diameter spiral blade and a variable diameter cone. The variable diameter spiral blade is wound around the variable diameter cone, and the angle of the variable diameter spiral blade is 26.57°. The variable diameter spiral blade is provided with three spirals.

[0015] As a further description of the above technical solution:

[0016] The rotary kiln tube is equipped with three sets of clamps. Two sets of clamps are provided at the end of the rotary kiln tube closest to the cylinder, and a clamp is provided at the end of the rotary kiln tube closest to the variable diameter spiral blade.

[0017] This utility model has the following beneficial effects:

[0018] 1. The heat conduction groove adopts an arc-shaped design and has built-in reinforcing ribs, which can effectively increase the internal heating area during rotation; at the same time, the heat conduction groove installed at a special angle replaces the lifting plate, which not only allows the material to move forward with the angle to avoid dust, but also allows the material to fully contact the hot airflow.

[0019] 2. The rotary furnace tube adopts a six-part structure for each ring, which effectively increases the strength of the furnace tube, extends its service life, and avoids deformation after long-term use. In addition, the three-helix structure has a lead length of 1.5m, which can effectively prevent material from returning to the smoke collection hood. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a rotary kiln tube for high-efficiency pyrolysis and carbonization proposed in this utility model.

[0021] Figure 2 This is a partial schematic diagram of the spiral blades of a rotary furnace tube for high-efficiency pyrolysis and carbonization proposed in this utility model.

[0022] Figure 3 This is a partial schematic diagram of the variable diameter spiral blade of a rotary furnace tube for high-efficiency pyrolysis and carbonization proposed in this utility model.

[0023] Figure 4 This is a partial schematic diagram of the variable-diameter cone of a rotary kiln tube for efficient pyrolysis and carbonization proposed in this utility model.

[0024] Legend:

[0025] 1. Flange 1; 2. Shell 1; 3. Flange 2; 4. Rotary furnace tube; 5. Spiral blade; 6. Spiral box; 7. Clamp; 8. Variable diameter spiral blade; 9. Variable diameter cone; 10. Shell 3. 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:

[0028] like Figures 1 to 4 As shown, this embodiment provides a high-efficiency pyrolysis carbonization rotary furnace tube, including: a rotary furnace tube 4, both ends of which are provided with a triple spiral structure, a heat conduction groove is provided inside the rotary furnace tube 4, a spiral guide plate is provided at one end of the rotary furnace tube 4, and a cylinder 10 is connected to the end of the spiral guide plate away from the rotary furnace tube 4.

[0029] In this embodiment, the rotary furnace tube 4 serves as the core container for pyrolysis and carbonization. The triple spiral structure at both ends of the tube rapidly guides the incoming material into the high-temperature zone as the tube rotates. The heat-conducting grooves in the high-temperature zone are in full contact with the heat source, allowing the material to complete pyrolysis and carbonization as it slides down with the rotating furnace tube. The processed material then enters the spiral guide plate at one end and, under its guidance, quickly enters the cylinder 310, preventing accumulation. The triple spiral structure accelerates the material introduction speed, the design of several sets of heat-conducting grooves improves the uniformity of material heating, and the spiral guide plate ensures timely material discharge. The overall structure improves the pyrolysis and carbonization efficiency and reduces dust generation.

[0030] Specifically, the end of the rotary kiln tube 4 away from the cylinder 10 is connected to the cylinder 2 via flange 3, and flange 1 is connected to the outside of the cylinder 2.

[0031] In this embodiment, the rotary kiln tube 4 is connected to the cylinder 2 via flange 3. Flange 1 is located on the outside of the cylinder 2 and is used to dock with the front feeding device. The flange connection ensures the sealing of the connection, prevents heat loss and material leakage, and maintains a stable high-temperature environment inside the furnace.

[0032] Specifically, the triple helix structure includes a helical plate 5, which has three helices and a lead length of 1.5m.

[0033] As a preferred implementation, the three spirals on the spiral blade 5 of the triple spiral structure propel the material forward with a lead of 1.5m when the rotary kiln tube 4 rotates, and can effectively prevent material backflow. The three spirals increase the contact area with the material, and the 1.5m lead ensures that the material enters the high-temperature zone quickly, avoids material return, and improves material processing efficiency.

[0034] Specifically, the heat conduction groove includes a spiral box 6, and several sets of spiral boxes 6 are provided. The spiral boxes 6 are installed inside the rotary furnace tube 4 at a special angle.

[0035] It should be noted that several sets of spiral boxes 6 constitute a heat conduction groove, which is installed inside the rotary furnace tube 4 at a special angle. When the furnace tube rotates, it drives the material to move along a specific trajectory, so that the material can fully contact the hot air flow and avoid dust being raised. At the same time, the heat conduction groove installed at a special angle can replace the lifting plate, reduce material dust, and reduce the amount of dust generated. Multiple sets of spiral boxes increase the material's chance of being heated and improve the pyrolysis and carbonization effect.

[0036] Specifically, the spiral box 6 is designed in an arc shape, and the interior of the spiral box 6 is equipped with reinforcing ribs to increase the internal heat-receiving area.

[0037] As a preferred implementation method, the arc-shaped spiral box 6 increases the contact area with the material. The internal reinforcing ribs not only enhance the structural strength of the spiral box, but also increase the heating area and improve the heat transfer efficiency. The combination of the arc-shaped structure and the reinforcing ribs not only improves the durability of the spiral box, but also promotes heat transfer, so that the material is heated more fully and the quality of pyrolysis and carbonization is guaranteed.

[0038] Example 2:

[0039] Specifically, the spiral guide plate includes a variable diameter spiral blade 8 and a variable diameter cone 9. The variable diameter spiral blade 8 is wound around the variable diameter cone 9, and the angle of the variable diameter spiral blade 8 is 26.57°. The variable diameter spiral blade 8 is provided with three spirals.

[0040] It should be noted that the variable diameter spiral blades 8 of the spiral guide plate are wound around the variable diameter cone 9 at an angle of 26.57°. When the furnace tube rotates, the three spirals guide the pyrolysis and carbonization material along the cone to the cylinder 10. The specific angle and the three spiral design ensure that the material is discharged quickly and smoothly, avoiding accumulation at the end of the rotary furnace tube 4 and ensuring the stability of continuous production.

[0041] Specifically, three sets of clamps 7 are installed inside the rotary kiln tube 4. Two sets of clamps 7 are installed at the end of the rotary kiln tube 4 near the cylinder 2, and a clamp 7 is installed at the end of the rotary kiln tube 4 near the variable diameter spiral blade 8.

[0042] In this embodiment, the three sets of clamps 7 inside the rotary furnace tube 4, two sets are close to the cylinder 2 and one set is close to the variable diameter spiral blade 8. Through the fastening effect, the structural stability of the furnace tube is enhanced, the deformation of the furnace tube under long-term high-temperature rotation is prevented, the overall strength of the furnace tube is improved, the service life of the equipment is extended, and the normal operation of the furnace tube is guaranteed during the production process.

[0043] During operation, after the material enters, it is first conveyed forward to the high-temperature zone by the rotation of the furnace tubes through the triple spiral structure at both ends of the interior, with a guide pitch of 1.5 meters. The heat-conducting groove in the high-temperature zone is composed of several sets of spiral boxes 6 installed at a special angle, with built-in reinforcing ribs to replace the lifting plates, so that the material can fully contact the heat source when it slides down with the rotation of the furnace tubes, reducing dust and increasing the heating area and furnace tube strength. After pyrolysis and carbonization, the material enters the spiral guide plate at one end. This guide plate contains a variable diameter spiral blade 8 with a 26.57-degree angle and a variable diameter cone 9, with three spirals, which can quickly guide the material to the cylinder three to avoid accumulation. The overall structure can reduce the internal temperature difference, increase the pyrolysis temperature, and effectively prevent the material from returning to the smoke collection hood.

[0044] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotary kiln tube for high-efficiency pyrolysis carbonization, characterized in that: It includes a rotary furnace tube (4), both ends of which are provided with a triple spiral structure. A heat conduction groove is provided inside the rotary furnace tube (4). A spiral guide plate is provided at one end of the rotary furnace tube (4). The end of the spiral guide plate away from the rotary furnace tube (4) is connected to a cylinder (10).

2. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 1, characterized in that: The end of the rotary kiln tube (4) away from the cylinder three (10) is connected to the cylinder one (2) through the flange two (3), and the outer side of the cylinder one (2) is connected to the flange one (1).

3. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 1, characterized in that: The triple helix structure includes a helical plate (5) with three helices on it, and the lead length of the helical plate (5) is 1.5m.

4. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 1, characterized in that: The heat-conducting groove includes a spiral box (6), and several sets of spiral boxes (6) are provided. The spiral boxes (6) are installed inside the rotary kiln tube (4) at a special angle.

5. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 4, characterized in that: The spiral box (6) is set in an arc shape, and the interior of the spiral box (6) is provided with reinforcing ribs to increase the internal heating area.

6. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 1, characterized in that: The spiral guide plate includes a variable diameter spiral blade (8) and a variable diameter cone (9). The variable diameter spiral blade (8) is wound around the variable diameter cone (9), and the angle of the variable diameter spiral blade (8) is 26.57°. The variable diameter spiral blade (8) is provided with three spirals.

7. The rotary kiln tube for high-efficiency pyrolysis carbonization according to claim 1, characterized in that: The rotary furnace tube (4) is provided with three sets of clamps (7). Two sets of clamps (7) are provided at the end of the rotary furnace tube (4) near the cylinder (2). The end of the rotary furnace tube (4) near the variable diameter spiral blade (8) is provided with clamps (7).

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