A pyrolysis device for tar residue treatment

Abstract

This invention discloses a pyrolysis device for treating tar residue, relating to the field of tar residue treatment technology. The pyrolysis device includes a heating assembly, a first spiral blade, and a second spiral blade. The heating assembly includes a heater, a heat insulation hood, and an inner furnace. The heater is fixedly installed, the heat insulation hood is located above the heater, and the inner furnace is rotatably fitted inside the heat insulation hood. The first spiral blade is fixed to the inner wall of the inner furnace for directional conveying of the tar residue. The second spiral blade is located inside the inner furnace and is drively connected to the inner furnace. When an external force drives the inner furnace to rotate, the inner furnace drives the second spiral blade to rotate in a different direction, sliding against the inner wall of the inner furnace and periodically against the first spiral blade. This structure can scrape off the tar residue adhering to the inner wall and extrude and grind the material, breaking down agglomerated structures and refining particles, significantly increasing the heating area.

Description

Technical Field

[0001] This invention relates to the field of tar residue treatment technology, specifically a pyrolysis device for tar residue treatment. Background Technology

[0002] Coal tar residue is a viscous, dark brown waste residue produced during coal gasification or coking. Currently, pyrolysis technology is the mainstream process for achieving harmless treatment and resource recovery of coal tar residue. Its principle is to decompose the large molecular organic matter in the residue into combustible gas, liquid fuel, and solid coke through high-temperature heating in an oxygen-free or oxygen-deficient environment.

[0003] However, existing tar residue pyrolysis units generally suffer from severe coking and adhesion to the furnace wall and agglomeration of tar residue due to softening at high temperatures, resulting in incomplete pyrolysis reaction, low oil and gas yield, and severely restricting pyrolysis efficiency.

[0004] To address the aforementioned problems, a pyrolysis device for treating tar residue is proposed. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a pyrolysis device for treating tar residue, comprising a heating assembly, a first spiral blade, and a second spiral blade. The heating assembly includes a heater, a heat insulation hood, and an inner furnace. The heater is fixedly installed, the heat insulation hood is located above the heater, and the inner furnace is rotatably fitted inside the heat insulation hood. The first spiral blade is fixed to the inner wall of the inner furnace for directional conveying of the tar residue. The second spiral blade is located inside the inner furnace and is drively connected to the inner furnace. When an external force drives the inner furnace to rotate, the inner furnace drives the second spiral blade to rotate in a different direction, thereby sliding against the inner wall of the inner furnace and periodically abutting against the first spiral blade.

[0006] Preferably, the inner furnace is configured as a cylindrical structure, with a drive assembly at the first end for rotating the inner furnace. The drive assembly includes a base, a drive component, a reducer, a first gear, and a gear ring. The base is fixedly disposed on one side of the heater, the drive component is fixed to the base, the reducer is connected to the output end of the drive component, the first gear is connected to the output end of the reducer, and the gear ring is fixed to the outer peripheral wall of the inner furnace, meshing with the first gear.

[0007] Preferably, the second end of the inner furnace is provided with a transmission assembly for converting the rotational power of the inner furnace into the reversing rotation of the second helical blade. The transmission assembly includes a shaft seat, a connecting shaft, a second gear, a fixed ring, several toothed sections, a rotating shaft, several connecting columns, a sprocket and chain assembly, and a spring. The shaft seat is fixedly disposed on the other side of the heater. The connecting shaft is engaged and rotates through the shaft seat. The second gear is fixed to the connecting shaft. The fixed ring is fixed to the outer peripheral wall of the inner furnace. Several toothed sections are evenly distributed on the fixed ring, and each toothed section periodically meshes with the second gear. The rotating shaft rotates through the inner furnace. Several connecting columns are evenly distributed, and each connecting column is fixed between the inner wall of the second helical blade and the rotating shaft. The sprocket and chain assembly connects the connecting shaft and the rotating shaft. The spring connects the shaft seat and the connecting shaft.

[0008] Preferably, the first end of the inner furnace is configured with a sealing plate one, the center of which is connected to an exhaust pipe, and the eccentric part of the sealing plate one is connected to a feed pipe. The second end of the inner furnace is configured with a sealing plate two, the eccentric part of which has a discharge hole one.

[0009] Preferably, a sealing plate three is magnetically attached to the side of the sealing plate two away from the sealing plate one. The eccentric part of the sealing plate three has a discharge hole two. The sealing plate three is connected to the inner furnace drive so that the inner furnace drives the sealing plate three to rotate, so that the discharge hole two and the discharge hole one can be periodically connected or disconnected.

[0010] Preferably, a storage chamber for storing coal slag is fixed on the outer peripheral wall of the second end of the insulation cover. A switching assembly is provided between the inner furnace and the sealing plate three. The switching assembly includes an incomplete gear one, a connecting shaft, a gear three, an incomplete gear two, and an incomplete gear three. The incomplete gear one is fixed on the outer peripheral wall of the inner furnace. The connecting shaft is rotatably engaged with the wall of the storage chamber. The gear three is fixed on the connecting shaft and periodically meshes with the incomplete gear one. The incomplete gear two is fixed on the connecting shaft. The incomplete gear three is fixed to the outer wall of the sealing plate three, and the incomplete gear three meshes with the incomplete gear two periodically.

[0011] Preferably, a valve is installed inside the feed pipe, with the valve's conduction direction facing into the inner furnace, and the feed pipe is periodically connected to the external feeding equipment.

[0012] Preferably, the exhaust pipe is connected to a gas distributor, the bottom of the gas distributor is connected to a heavy oil pipe, the top of the gas distributor is connected to a cooling pipe, and the end of the cooling pipe extends into the light oil tank.

[0013] Preferably, the heater is connected to the external diesel storage tank via a guide pipe. A vent pipe is connected to the top of the cooling pipe, and the vent pipe is connected to the inside of the insulation cover.

[0014] Compared with the prior art, the present invention provides a pyrolysis device for treating tar residue, which has the following beneficial effects:

[0015] 1. A second spiral blade is connected to the inner furnace drive, enabling it to reversibly engage with the first spiral blade. This structure scrapes away tar residue adhering to the inner wall and compresses and grinds the material, breaking down agglomerates and refining particles, significantly increasing the heating area. This not only ensures uniform heating of the material but also effectively prevents high-temperature adhesion, greatly improving the pyrolysis efficiency and processing quality of the tar residue.

[0016] 2. A switching component is installed to achieve automatic sequential separation of pyrolysis and discharge. During the pyrolysis stage, the discharge port remains closed to ensure the inner furnace is in a sealed, high-temperature environment, preventing air from entering and causing safety hazards; after pyrolysis is completed, the discharge is automatically opened. This purely mechanical control method eliminates the need for complex electronic sensors, significantly improving the reliability of the equipment operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the furnace of the present invention;

[0019] Figure 3 This is a schematic diagram showing the positional distribution of the first helical blade structure of the present invention;

[0020] Figure 4 This is a schematic diagram showing the positional distribution of the second helical blade structure of the present invention;

[0021] Figure 5 This is a schematic diagram of the driving component of the present invention;

[0022] Figure 6 This is a schematic diagram of the transmission component of the present invention;

[0023] Figure 7 This is a schematic diagram of the switching component of the present invention;

[0024] Figure 8 For the present invention Figure 7 Enlarged schematic diagram of the structure at point A in the middle.

[0025] In the diagram: 11. Heater; 12. Insulation cover; 13. Inner furnace; 2. First spiral blade; 3. Second spiral blade; 21. Base; 22. Drive component; 23. Reducer; 24. Gear 1; 25. Gear ring; 31. Shaft seat; 32. Connecting shaft; 33. Gear 2; 34. Fixed ring; 35. Tooth part; 36. Rotating shaft; 37. Connecting column; 38. Sprocket and chain assembly; 41. Sealing plate 1; 42. Exhaust pipe; 43. Feed pipe; 44. Sealing plate 2; 45. Discharge hole 1; 46. Sealing plate 3; 47. Discharge hole 2; 5. Storage chamber; 51. Incomplete gear 1; 52. Connecting shaft; 53. Gear 3; 54. Incomplete gear 2; 55. Incomplete gear 3; 61. Air distribution manifold; 62. Heavy oil pipe; 63. Cooling pipe; 64. Guide pipe; 65. Air guide pipe. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein in the specification of the application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims and drawings of this application are intended to cover non-exclusive inclusion.

[0028] The directional terms appearing in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. For example, in the description of this application, the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0029] Furthermore, the terms "first," "second," etc., in the specification and claims of this application or in the aforementioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

[0030] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, "connection" or "joining" in mechanical structures can refer to a physical connection, such as a fixed connection, for example, a connection fixed by fasteners, such as a connection fixed by screws, bolts, or other fasteners; a physical connection can also be a detachable connection, such as a snap-fit ​​or interlocking connection; a physical connection can also be an integral connection, for example, a connection formed by welding, bonding, or integral molding. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0031] Reference Figure 1-8 The present invention provides a technical solution:

[0032] A pyrolysis device for treating tar residue includes a heating assembly, a first spiral blade 2, and a second spiral blade 3. The heating assembly includes a heater 11, a heat insulation cover 12, and an inner furnace 13. The heater 11 is fixedly installed, the heat insulation cover 12 is located above the heater 11, and the inner furnace 13 is rotatably fitted inside the heat insulation cover 12. The first spiral blade 2 is fixed to the inner wall of the inner furnace 13 for directional conveying of the tar residue. The second spiral blade 3 is located inside the inner furnace 13 and is drively connected to the inner furnace 13. When an external force drives the inner furnace 13 to rotate, the inner furnace 13 drives the second spiral blade 3 to rotate in a different direction, so as to slide against the inner wall of the inner furnace 13 and periodically abut against the first spiral blade 2.

[0033] The heat insulation cover 12 and the inner furnace 13 form a closed environment. The heater 11 heats the closed environment, forcing the temperature inside the inner furnace 13 to rise to 500-550°C, so that the oil, water and organic matter in the oily tar residue are fully decomposed into gaseous state and discharged, and the solid coal slag after pyrolysis is discharged.

[0034] Based on the above solution, please refer to Figures 1 to 4 The inner furnace 13 rotates under the drive of external force, which drives the first spiral blade 2 to rotate synchronously. Thus, the tar residue entering the inner furnace 13 can be directionally conveyed while being pyrolyzed, so that the solid coal slag after pyrolysis can be conveyed to the discharge end.

[0035] During the aforementioned movement, that is, during the rotation of the first spiral blade 2 driven by the inner furnace 13, the power of the inner furnace 13 is transferred to the second spiral blade 3 through a transmission mechanism, causing the second spiral blade 3 to rotate in a different direction. Here, we take... Figure 2 For example:

[0036] When the second spiral blade 3 rotates, it gradually comes into alternating contact with the left and right sides of the first spiral blade 2. During this process, the second spiral blade 3 can scrape off the tar residue adhering to the inside of the inner furnace 13, ensuring that the tar residue can be heated evenly. At the same time, it can squeeze and grind the scraped tar residue and free tar residue, breaking down the agglomerated structure of the tar residue and dispersing it into smaller particles.

[0037] As can be seen, the device is equipped with a second spiral blade 3 that is driven to the inner furnace 13 to achieve alternating contact with the first spiral blade 2. On the one hand, it can scrape off the tar residue adhering to the inner wall of the inner furnace 13, ensuring uniform heating of the material to fully complete the pyrolysis reaction; on the other hand, it squeezes and grinds the scraped and free tar residue, breaking down the agglomerated structure and refining the particles, increasing the contact area between the tar residue and heat, and improving the pyrolysis efficiency. Overall, it achieves efficient pyrolysis treatment of tar residue.

[0038] Moreover, the tar residue adhering to the sidewalls of the second spiral blade 3 and the first spiral blade 2 can be completely removed by extrusion and grinding, thereby achieving complete anti-adhesion of all components inside the inner furnace 13.

[0039] When the second spiral blade 3 separates from the first spiral blade 2, the compressed and dispersed tar residue can fall under the action of gravity and redistribute to the bottom of the inner furnace 13, waiting to be conveyed by the first spiral blade 2 and compressed by the second spiral blade 3, thus avoiding adhesion.

[0040] In some alternative embodiments, the inner furnace 13 is configured as a cylindrical structure, with a drive assembly at the first end of the inner furnace 13 for driving the inner furnace 13 to rotate. The drive assembly includes a base 21, a drive component 22, a reducer 23, a gear 24, and a gear ring 25. The base 21 is fixedly disposed on one side of the heater 11, the drive component 22 is fixed on the base 21, the reducer 23 is connected to the output end of the drive component 22, the gear 24 is connected to the output end of the reducer 23, and the gear ring 25 is fixed to the outer peripheral wall of the inner furnace 13, meshing with the gear 24.

[0041] Based on the above solution, please refer to Figure 5 The drive unit 22 drives the reducer 23 to run, the reducer 23 drives the gear 24 to rotate, the gear 24 drives the gear ring 25 to rotate through meshing transmission, and the gear ring 25 can drive the inner furnace 13 to complete the rotation.

[0042] The drive unit 22 can be configured as a servo motor, which can indirectly drive the inner furnace 13 to rotate clockwise or counterclockwise. When the servo motor indirectly drives the inner furnace 13 to rotate clockwise, the first spiral blade 2 rotates clockwise and will directionally transport the tar residue from the feed end to the discharge end. Conversely, when the servo motor indirectly drives the inner furnace 13 to rotate counterclockwise, the first spiral blade 2 rotates counterclockwise and will directionally transport the tar residue from the discharge end to the feed end. In other words, the tar residue can circulate and pyrolyze within the inner furnace 13 until it is completely transformed into solid coal slag.

[0043] In this invention, the second end of the inner furnace 13 is provided with a transmission assembly for converting the rotational power of the inner furnace 13 into the reversing rotation of the second spiral blade 3. The transmission assembly includes a shaft seat 31, a connecting shaft 32, a gear 33, a fixing ring 34, a plurality of toothed parts 35, a rotating shaft 36, a plurality of connecting columns 37, a sprocket and chain assembly 38, and a spring. A bearing seat 31 is fixedly mounted on the other side of the heater 11. A connecting shaft 32 is engaged and rotated and passes through the bearing seat 31. A gear 33 is fixed on the connecting shaft 32. A retaining ring 34 is fixed to the outer peripheral wall of the inner furnace 13. Several teeth 35 are evenly distributed on the retaining ring 34. Each tooth 35 periodically meshes with the gear 33. A rotating shaft 36 rotates through the inner furnace 13. Several connecting posts 37 are evenly distributed. Each connecting post 37 is fixed between the inner wall of the second spiral blade 3 and the rotating shaft 36. A sprocket and chain assembly 38 is connected between the connecting shaft 32 and the rotating shaft 36. A spring (not shown in the figure) is connected between the bearing seat 31 and the connecting shaft 32.

[0044] Based on the above solution, please refer to Figure 6 :

[0045] When the inner furnace 13 rotates, it will drive the fixed ring 34 to rotate synchronously. Several toothed parts 35 will rotate synchronously with the fixed ring 34. When any toothed part 35 meshes with the gear 2 33, the gear 2 33 will drive the connecting shaft 32 to overcome the damping force of the spring and complete the counterclockwise rotation. The connecting shaft 32 drives the rotating shaft 36 to rotate counterclockwise through the sprocket and chain assembly 38. The rotating shaft 36 will drive the second spiral blade 3 to rotate synchronously through several connecting columns 37. Then the second spiral blade 3 will rotate from the state of abutting the left side wall of the first spiral blade 2 to the state of abutting the right side wall of the first spiral blade 2. As the inner furnace 13 continues to rotate, when any tooth 35 does not mesh with the gear 33, the spring's elastic potential energy will drive the connecting shaft 32 to rotate clockwise. The connecting shaft 32 drives the rotating shaft 36 to rotate clockwise through the sprocket and chain assembly 38. The rotating shaft 36 drives the second spiral blade 3 to rotate synchronously through several connecting columns 37. Therefore, the second spiral blade 3 will rotate from the state of abutting the right side wall of the first spiral blade 2 to the state of abutting the left side wall of the first spiral blade 2.

[0046] As can be seen, the continuous rotation of the inner furnace 13 is converted into the reciprocating rotation of the second spiral blade 3 through the use of the transmission components. This mechanism utilizes the periodic meshing of the toothed part 35 and the gear 33, along with the spring's reset action, to drive the second spiral blade 3 to rotate between the two sides of the first spiral blade 2 without an additional power source. This not only achieves a compact and energy-efficient structure but also ensures the regularity and continuity of the scraping and extrusion actions, effectively preventing tar residue adhesion and agglomeration, and significantly improving the efficiency of pyrolysis treatment.

[0047] Preferably, the spring is a clockwork spring. Since the movement of the connecting shaft 32 is circular rotation and the deformation direction of the clockwork spring is circumferential, the two have a high degree of compatibility and the spring is not easily damaged.

[0048] Among them, the sprocket and chain assembly 38 is an existing inter-shaft transmission assembly, the principle and structure of which will not be described in detail here. In addition, in order to avoid damage to the sprocket and chain assembly 38 when solid coal slag is discharged, a protective cover is installed on the outside of the sprocket and chain assembly 38.

[0049] In some alternative embodiments, the first end of the inner furnace 13 is configured as a sealing plate 41, with an exhaust pipe 42 connected to the center of the sealing plate 41 and a feed pipe 43 connected to the eccentric part of the sealing plate 41. The second end of the inner furnace 13 is configured as a sealing plate 44, with a discharge hole 45 opened on the eccentric part of the sealing plate 44.

[0050] Based on the above solution, please refer to Figure 2 The tar residue to be pyrolyzed can be introduced through the feed pipe 43; after the feeding pyrolysis process is completed, the gaseous mixture in the tar residue will be discharged through the exhaust pipe 42, and the solid coal slag will remain in the inner furnace 13 and finally be discharged through the discharge hole 45.

[0051] In this invention, a second sealing plate 44 is magnetically attached to a third sealing plate 46 on the side away from the first sealing plate 41. The third sealing plate 46 has a discharge hole 2 47 on its eccentric part. The third sealing plate 46 is connected to the inner furnace 13 so that the inner furnace 13 drives the third sealing plate 46 to rotate, so that the discharge hole 2 47 and the discharge hole 1 45 are periodically connected or not connected.

[0052] Based on the above solution, please refer to Figure 7 During the pyrolysis of tar residue in the inner furnace 13, discharge hole 2 47 and discharge hole 1 45 are in a non-conductive state. Therefore, the inner furnace 13 is a completely closed space to prevent air from entering. After the pyrolysis is completed, the sealing plate 3 46 will automatically rotate with the rotation power of the inner furnace 13, so that discharge hole 2 47 and discharge hole 1 45 are connected. The solid coal slag in the inner furnace 13 is discharged from discharge hole 1 45 and discharge hole 2 47.

[0053] In a preferred embodiment, a storage chamber 5 for storing coal slag is fixed on the outer peripheral wall of the second end of the heat insulation cover 12. A switching assembly is provided between the inner furnace 13 and the sealing plate 46. The switching assembly includes an incomplete gear 1 51, a connecting shaft 52, a gear 3 53, an incomplete gear 2 54, and an incomplete gear 3 55. The incomplete gear 1 51 is fixed on the outer peripheral wall of the inner furnace 13. The connecting shaft 52 is rotatably engaged with the wall of the storage chamber 5. The gear 3 53 is fixed on the connecting shaft 52 and periodically meshes with the incomplete gear 1 51. The incomplete gear 2 54 is fixed on the connecting shaft 52. The incomplete gear 3 55 is fixed on the outer wall of the sealing plate 46. The incomplete gear 3 55 and the incomplete gear 2 54 periodically mesh.

[0054] Based on the above solution, please refer to Figures 7 to 8 When the tar residue in the inner furnace 13 has not been pyrolyzed, the number of clockwise rotations and counterclockwise rotations of the inner furnace 13 are constant values. That is, the first spiral blade 2 repeatedly conveys the tar residue. During this process, the inner furnace 13 drives the rotation angle of the gear 3 53 through the meshing transmission of the incomplete gear 1 51 and the gear 3 53 to be J (J is less than 180°). Consequently, the rotation angle of the connecting shaft 52 and the incomplete gear 2 54 is also J. Within the rotation range of J, the incomplete gear 2 54 does not mesh with the incomplete gear 3 55. Therefore, the sealing plate 3 46 does not rotate, and the discharge hole 1 45 and the discharge hole 2 47 remain unconnected.

[0055] When the tar residue in the inner furnace 13 is pyrolyzed, the number of clockwise rotations of the inner furnace 13 will exceed the aforementioned fixed value. That is, the first spiral blade 2 pushes the solid coal slag towards the discharge hole 1 45. At the same time, the rotation stroke of the gear 3 53 will be greater than J. Therefore, the incomplete gear 2 54 can mesh with the incomplete gear 3 53 once. The incomplete gear 3 53 will drive the sealing plate 3 46 to rotate at a certain angle, and the discharge hole 1 45 and the discharge hole 2 47 will be connected, and the solid coal slag in the inner furnace 13 will be discharged.

[0056] After the material is discharged, the servo motor drives in reverse to restore the entire switching component to the state before feeding, so that the switching can be repeated cyclically.

[0057] As can be seen, by using the switching component, the number of rotations of the inner furnace 13 is converted into a control signal for the discharge action. This component utilizes the meshing characteristics of incomplete gears to achieve automatic sequential separation of the pyrolysis and discharge processes: when the tar residue is not completely pyrolyzed, the discharge hole remains closed, ensuring that the inner furnace 13 is in a sealed, high-temperature environment, preventing air from entering and ensuring sufficient material circulation and heating; once pyrolysis is complete, the discharge hole is automatically opened, allowing for the smooth discharge of solid coal slag. This not only avoids the problem of incomplete pyrolysis caused by premature discharge but also eliminates the need for complex sensor detection and electrical control systems, achieving pyrolysis before discharge with a purely mechanical structure, significantly improving the reliability and automation level of the equipment.

[0058] In some alternative embodiments, a valve is installed inside the feed pipe 43, with the valve's conduction direction facing into the inner furnace 13, and the feed pipe 43 is periodically connected to an external feeding device.

[0059] When feeding, the valve of the feed pipe 43 is opened, and the feed pipe 43 is connected to the external feeding equipment. After feeding is completed, the valve is closed, so that the inside of the inner furnace 13 is completely closed.

[0060] In a preferred embodiment, an air distribution manifold 61 is connected to the exhaust pipe 42, a heavy oil pipe 62 is connected to the bottom of the air distribution manifold 61, a cooling pipe 63 is connected to the top of the air distribution manifold 61, and the end of the cooling pipe 63 extends into the light oil tank.

[0061] Based on the above scheme, during the pyrolysis process, the steam and desorbed oil gas generated in the inner furnace 13 enter the gas separator 61 through the exhaust pipe 42. After passing through the gas separator 61, a portion of the heavy oil will be separated and overflow into the heavy oil tank through the heavy oil pipe 62. A portion of the light oil will be further cooled again through the cooling pipe 63 and enter the oil-water separator through the overflow pipe.

[0062] In a preferred embodiment, the heater 11 is connected to an external diesel storage tank via a guide pipe 64. A vent pipe 65 is connected to the top of the cooling pipe 63, and the vent pipe 65 is connected to the inside of the insulation cover 12.

[0063] Diesel fuel serves as the primary energy source for heater 11, which heats the enclosed space between insulation cover 12 and inner furnace 13. The temperature inside inner furnace 13 rises, causing combustion. Gas pipe 65 can supply non-condensable combustible gas into insulation cover 12 for auxiliary combustion, enabling the reuse and combustion of non-condensable gas and saving energy.

[0064] Specifically, the working principle of this invention is as follows:

[0065] First, the feed pipe valve 43 is opened to feed the tar residue into the inner furnace 13, and then the valve is closed to create a sealed high-temperature environment. Next, the drive assembly drives the inner furnace 13 and the first spiral blade 2 to rotate in both directions, causing the material to circulate and pyrolyze at 500-550℃. During this period, the second spiral blade 3 rotates back and forth to scrape, squeeze, and grind the tar residue, preventing adhesion and improving pyrolysis efficiency. The oil and gas generated by pyrolysis enter the gas separator 61 through the exhaust pipe 42, where heavy oil and light oil are separated, and the non-condensable gas is reused for combustion. After pyrolysis is completely completed, the switching assembly automatically triggers the discharge hole to open, discharging the solid coal slag, and finally resets the system to prepare for the next cycle.

[0066] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A pyrolysis apparatus for treating tar residue, characterized in that: include: The heating assembly includes a heater (11), a heat insulation cover (12), and an inner furnace (13); the heater (11) is fixedly installed, the heat insulation cover (12) is located above the heater (11), and the inner furnace (13) is rotatably fitted inside the heat insulation cover (12); The first spiral blade (2) is fixed on the inner wall of the inner furnace (13) to directionally transport the tar residue; The second spiral blade (3) is disposed inside the inner furnace (13) and is connected to the inner furnace (13) in a transmission manner. When the external force drives the inner furnace (13) to rotate, the inner furnace (13) drives the second spiral blade (3) to rotate in a different direction, so as to slide against the inner wall of the inner furnace (13) and periodically abut against the first spiral blade (2).

2. The pyrolysis apparatus for treating tar residue according to claim 1, characterized in that: The inner furnace (13) is configured as a cylindrical structure. The first end of the inner furnace (13) is provided with a drive assembly for driving the inner furnace (13) to rotate. The drive assembly includes a base (21), a drive component (22), a reducer (23), a gear (24), and a gear ring (25). The base (21) is fixedly disposed on one side of the heater (11), the drive (22) is fixed on the base (21), the reducer (23) is connected to the output end of the drive (22), the gear (24) is connected to the output end of the reducer (23), the gear ring (25) is fixed to the outer peripheral wall of the inner furnace (13), and the gear ring (25) meshes with the gear (24).

3. The pyrolysis apparatus for treating tar residue according to claim 2, characterized in that: The second end of the inner furnace (13) is provided with a transmission assembly for converting the rotational power of the inner furnace (13) into the reversing rotation of the second spiral blade (3). The transmission assembly includes a shaft seat (31), a connecting shaft (32), a second gear (33), a fixed ring (34), several toothed parts (35), a rotating shaft (36), several connecting columns (37), a sprocket and chain assembly (38), and a spring. The bearing seat (31) is fixedly disposed on the other side of the heater (11). The connecting shaft (32) is engaged and rotated and passes through the bearing seat (31). The gear two (33) is fixed on the connecting shaft (32). The fixing ring (34) is fixed on the outer peripheral wall of the inner furnace (13). Several teeth (35) are evenly distributed on the fixing ring (34). Each tooth (35) meshes periodically with the gear two (33). The rotating shaft (36) rotates through the inner furnace (13). Several connecting columns (37) are evenly distributed. Each connecting column (37) is fixed between the inner wall of the second spiral blade (3) and the rotating shaft (36). The sprocket and chain assembly (38) is connected between the connecting shaft (32) and the rotating shaft (36). The spring is connected between the bearing seat (31) and the connecting shaft (32).

4. A pyrolysis apparatus for treating tar residue according to any one of claims 1-3, characterized in that: The first end of the inner furnace (13) is configured as a sealing plate (41), the center of the sealing plate (41) is connected to an exhaust pipe (42), and the eccentric part of the sealing plate (41) is connected to a feed pipe (43). The second end of the inner furnace (13) is configured as a sealing plate two (44), and the eccentric part of the sealing plate two (44) is provided with a discharge hole one (45).

5. The pyrolysis apparatus for treating tar residue according to claim 4, characterized in that: The sealing plate 2 (44) is magnetically attached to the sealing plate 3 (46) on the side away from the sealing plate 1 (41). The sealing plate 3 (46) has a discharge hole 2 (47) on its eccentric part. The sealing plate 3 (46) is connected to the inner furnace (13) so that the inner furnace (13) drives the sealing plate 3 (46) to rotate, so that the discharge hole 2 (47) and the discharge hole 1 (45) are periodically connected or not connected.

6. The pyrolysis apparatus for treating tar residue according to claim 5, characterized in that: A storage chamber (5) for storing coal slag is fixed on the outer peripheral wall of the second end of the heat insulation cover (12). A switching assembly is provided between the inner furnace (13) and the sealing plate three (46). The switching assembly includes an incomplete gear one (51), a connecting shaft (52), a gear three (53), an incomplete gear two (54), and an incomplete gear three (55). The incomplete gear one (51) is fixed on the outer peripheral wall of the inner furnace (13). The connecting shaft (52) is rotatably engaged with the wall of the storage chamber (5). The gear three (53) is fixed on the connecting shaft (52) and periodically meshes with the incomplete gear one (51). The incomplete gear two (54) is fixed on the connecting shaft (52). The incomplete gear three (55) is fixed on the outer wall of the sealing plate three (46). The incomplete gear three (55) and the incomplete gear two (54) periodically mesh.

7. The pyrolysis apparatus for treating tar residue according to claim 4, characterized in that: A valve is installed inside the feed pipe (43), and the valve is directed toward the inner furnace (13). The feed pipe (43) is periodically connected to the external feeding equipment.

8. The pyrolysis apparatus for treating tar residue according to claim 4, characterized in that: The exhaust pipe (42) is connected to a gas distributor (61), the bottom of the gas distributor (61) is connected to a heavy oil pipe (62), the top of the gas distributor (61) is connected to a cooling pipe (63), and the end of the cooling pipe (63) extends into the light oil tank.

9. A pyrolysis apparatus for treating tar residue according to claim 8, characterized in that: The heater (11) is connected to the external diesel storage tank via a guide pipe (64); The top of the cooling pipe (63) is connected to an air guide pipe (65), which is connected to the inside of the heat insulation cover (12).

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