Intelligent stirring and dispersing device of high-temperature cracking furnace

Abstract

The invention relates to the technical field of high-temperature cracking furnace processing, and discloses an intelligent stirring and dispersing device of a high-temperature cracking furnace, the intelligent stirring and dispersing device comprises a support assembly, a rectangular crucible fixedly connected to the inner side of a support of the support assembly, and an asteroid stirring and dispersing assembly, the fixed shaft sleeve is fixedly connected to the interior of the tank cover assembly body; and the rotating shaft is rotationally connected into the fixed shaft sleeve in a penetrating mode, and a limiting plate fixedly sleeves the top end of the surface of the rotating shaft. According to the device, the explosion-proof motor drives the rotating shaft to drive the rotating gear to be meshed with the fixed rack, so that the stirring rod synchronously realizes autorotation and transverse reciprocating motion, and a'planetary 'composite track is formed to cover the whole area of the rectangular crucible. Compared with traditional single axial stirring, stirring blind areas at the edge and the bottom of the furnace body can be eliminated, granular materials are evenly stressed, and the sufficiency of cracking reaction and the quality of products are improved.

Description

Technical Field

[0001] The present invention relates to the field of high-temperature cracking furnace processing, and particularly to an intelligent stirring and dispersing device for a high-temperature cracking furnace. Background Art

[0002] At present, as a core device in the chemical and energy fields, the high-temperature cracking furnace is mainly used to achieve the cracking reaction of materials in a high-temperature environment. The performance of its stirring and dispersing device directly affects the reaction efficiency and product uniformity. In the prior art, traditional stirring devices generally adopt a stirring paddle structure that rotates in a single axial direction, with a fixed stirring angle and lack of dynamic change, resulting in the following technical bottlenecks:

[0003] The traditional stirring paddle only rotates in a single direction around the central axis, and the movement trajectory of the paddle blades is limited to a fixed plane, making it difficult to cover the entire area inside the cracking furnace. For granular materials, it is easy to form a stirring blind area at the edge or bottom of the furnace body, resulting in local overheating or insufficient cracking of the materials, affecting the product quality and yield.

[0004] Based on this, we propose an intelligent stirring and dispersing device for a high-temperature cracking furnace. Summary of the Invention

[0005] To solve the technical problem of the single stirring angle of existing equipment, the present invention provides an intelligent stirring and dispersing device for a high-temperature cracking furnace.

[0006] The present invention is implemented by the following technical solutions: An intelligent stirring and dispersing device for a high-temperature cracking furnace, comprising: a bracket assembly, a rectangular crucible is fixedly connected to the inner side of the bracket of the bracket assembly, and a groove cover assembly is provided at the open end of the rectangular crucible;

[0007] An asteroid stirring and dispersing assembly, the asteroid stirring and dispersing assembly comprising: a fixed bushing, the fixed bushing is fixedly connected to the inside of the groove cover assembly; a rotating shaft, the rotating shaft is rotatably penetrated and connected to the fixed bushing, and a limiting plate is fixedly sleeved on the top end surface of the rotating shaft;

[0008] A rotating gear, the rotating gear is sleeved on the surface of the rotating shaft, and a connecting shaft is fixedly connected to the bottom end of the rotating shaft.

[0009] The main movement of the rotating shaft: The explosion-proof motor drives the rotating shaft to rotate clockwise through a speed reducer, driving the rotating gear sleeved on its surface to perform a self-rotation movement; the rotating gear meshes with a fixed rack fixed to the inner side of the bracket assembly. Since the fixed rack is stationary, the rotating gear performs a linear movement along the linear trajectory of the fixed rack while rotating;

[0010] It further includes a heat insulation component, which includes a first rectangular small aluminosilicate ceramic fiber blanket covering the connection between the tank cover assembly and the rectangular crucible, a circular small aluminosilicate ceramic fiber blanket covering the outer surface of the tank cover assembly, and a second rectangular small aluminosilicate ceramic fiber blanket covering the edge surface of the rectangular crucible.

[0011] A shock absorber seat is fixedly connected to the bottom end of the support assembly. The top end of the support assembly is fixedly connected to the left roller support and the right roller support. The top end of the tank cover assembly is fixedly connected to an explosion-proof motor. The output shaft of the explosion-proof motor is drivingly connected to the bottom end of the rotating shaft through a speed reducer. The bottom end of the connecting shaft is fixedly connected to a stirring rod, and the stirring rod is located inside the rectangular crucible.

[0012] The top end of the support assembly is fixedly connected to a drag chain fitting assembly. A drag chain support plate is lapped above the drag chain fitting assembly, and the drag chain support plate is fixedly connected to the asteroid stirring and dispersing assembly;

[0013] A fixed rack is fixedly connected between the tank cover assemblies, and the fixed rack is in meshing transmission with a rotating gear. A roller is movably connected to the inner sides of the left roller support and the right roller support. The roller is movably connected to the bottom of the support assembly through a bearing and is supported at the bottom end of the first rectangular small aluminosilicate ceramic fiber blanket.

[0014] As a further optimized solution of the present invention, the rotating gear is movably connected to the rotating shaft through a connecting shaft. When it revolves, it drives the stirring rod to perform a superposition of transverse reciprocating motion and self-rotation, so that the stirring range covers the entire area of the rectangular crucible, eliminating the blind area of traditional single-axial stirring.

[0015] As a further optimized solution of the present invention, both the circular small aluminosilicate ceramic fiber blanket and the second rectangular small aluminosilicate ceramic fiber blanket are pasted on the surface of the corresponding components through a high-temperature adhesive; the first rectangular small aluminosilicate ceramic fiber blanket is movably lapped on the roller.

[0016] As a further optimized solution of the present invention, the first rectangular small aluminosilicate ceramic fiber blanket covers the connection between the tank cover assembly and the rectangular crucible, blocking the upward conduction of high temperature; the circular small aluminosilicate ceramic fiber blanket wraps the top surface of the tank cover assembly, isolating high-temperature radiation; the second rectangular small aluminosilicate ceramic fiber blanket covers the edge of the rectangular crucible, reducing lateral heat loss.

[0017] As a further optimized solution of the present invention, the drag chain fitting assembly and the drag chain support plate accommodate the power cord of the explosion-proof motor, avoiding contact between the cable and high-temperature components and ensuring safety.

[0018] As a further optimized solution of the present invention, a lifting eye screw is also fixedly connected to the top edge of the support assembly. The lifting eye screw is used for hoisting the intelligent stirring and dispersing device. The support assembly is hoisted above the high-temperature cracking furnace through the lifting eye screw, and the shock absorber seat absorbs the vibration during stirring, improving stability;

[0019] As a further optimization solution of the present invention, a shock absorber seat at the bottom of the bracket assembly and the roller form a support structure, and cooperate with the drag chain support plate to place transmission components such as explosion-proof motors in the low-temperature area, and maintain a normal temperature environment through air convection and heat insulation materials, avoiding the influence of high temperature on the mechanical transmission accuracy.

[0020] As a further optimization solution of the present invention, the rotation speed and direction of the explosion-proof motor are precisely adjusted through a preset program, and the stirring frequency of the rotating shaft and the revolution period of the rotating gear are controlled to achieve intermittent eddy stirring, which not only strengthens the material mixing but also facilitates the orderly discharge of cracking gas.

[0021] As a further optimization solution of the present invention, a built-in temperature sensor monitors the temperature of the material in the rectangular crucible in real time and feeds it back to the PLC system to automatically adjust the stirring speed, avoiding local overheating and causing coking.

[0022] As a further optimization solution of the present invention, the cracking tail gas and the feedstock are reversely heat-exchanged in the heat exchanger, and the device recovers the heat generated by high-temperature cracking through the heat exchange design for preheating the feedstock or other process links, reducing the overall energy consumption.

[0023] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0024] 1. The device of the present invention drives the rotating shaft through an explosion-proof motor, drives the rotating gear to engage with the fixed rack, and enables the stirring rod to realize self-rotation and horizontal reciprocating motion synchronously, forming a "planetary" composite trajectory, covering the entire area of the rectangular crucible. Compared with traditional single-axial stirring, it can eliminate the stirring blind spots at the edge and bottom of the furnace body, make the granular materials evenly stressed, and improve the sufficiency of the cracking reaction and the product quality.

[0025] 2. The present invention constitutes a heat insulation system through multiple layers of aluminum silicate ceramic fiber blankets, blocking the conduction of high temperature to the transmission components, and placing mechanical components such as explosion-proof motors in a normal temperature environment. This structure not only maintains the high-temperature working condition of 1500 °C in the cracking chamber but also avoids thermal damage to the transmission system caused by high temperature, ensuring the stability and control accuracy of the stirring motion and extending the service life of the equipment.

[0026] 3. The PLC program of the present invention precisely adjusts the stirring frequency and trajectory, combines the real-time feedback of the temperature sensor, and dynamically adjusts the stirring speed to adapt to the material characteristics, preventing local overheating and coking; at the same time, the waste heat of the cracking tail gas preheats the feedstock through the heat exchange system, reducing energy consumption. This design realizes "intelligent stirring + energy closed-loop management", which can shorten the reaction cycle and reduce carbon emissions compared with traditional processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front schematic view of the whole machine of the present invention;

[0028] Figure 2 Schematic side view of the overall structure of the present invention

[0029] Figure 3 Schematic top view of the overall structure of the present invention

[0030] Figure 4 Schematic connection structure of the asteroid stirring and dispersing assembly of the present invention

[0031] Figure 5 Schematic connection structure of the fixed rack of the present invention

[0032] Main symbol description:

[0033] 1. Bracket assembly; 2. Rectangular crucible; 3. Tank cover assembly; 4. Asteroid stirring and dispersing assembly; 41. Fixed bushing; 42. Limiting plate; 43. Rotating shaft; 44. Rotating gear; 45. Connecting shaft; 5. First rectangular small aluminosilicate ceramic fiber blanket; 6. Circular small aluminosilicate ceramic fiber blanket; 7. Second rectangular small aluminosilicate ceramic fiber blanket; 8. Hoisting ring screw; 9. Drum; 10. Shock absorber seat; 11. Right roller bracket; 12. Left roller bracket; 13. Explosion-proof motor; 14. Drag chain mating assembly; 15. Drag chain support plate; 16. Fixed rack. Detailed implementation manners

[0034] Next, in combination with the accompanying drawings and specific implementation manners, the present invention will be further described. It should be noted that, on the premise of no conflict, any combination of the following-described embodiments or technical features can form a new embodiment.

[0035] Embodiment 1:

[0036] Please refer to Figures 1-5 , this embodiment proposes an intelligent stirring and dispersing device for a high-temperature cracking furnace, including: a bracket assembly 1, a rectangular crucible 2 is fixedly connected to the inner side of the bracket of the bracket assembly 1, and a tank cover assembly 3 is provided on the opening end of the rectangular crucible 2;

[0037] An asteroid stirring and dispersing assembly 4, the asteroid stirring and dispersing assembly 4 includes:

[0038] A fixed bushing 41, the fixed bushing 41 is fixedly connected to the inside of the tank cover assembly 3;

[0039] A rotating shaft 43, the rotating shaft 43 rotatably penetrates and is connected to the inside of the fixed bushing 41, and a limiting plate 42 is fixedly sleeved on the top end surface of the rotating shaft 43;

[0040] A rotating gear 44, the rotating gear 44 is sleeved on the surface of the rotating shaft 43, and a connecting shaft 45 is fixedly connected to the bottom end of the rotating shaft 43.

[0041] More specifically, the main motion of the rotating shaft 43 is as follows: the explosion-proof motor 13 drives the rotating shaft 43 to rotate clockwise through the reducer, driving the rotating gear 44 mounted on the surface of the rotating shaft 43 to rotate on its own axis; the rotating gear 44 engages with the fixed rack 16 fixed to the inner side of the bracket assembly 1. Since the fixed rack 16 is stationary, the rotating gear 44 rotates and moves linearly along the linear trajectory of the fixed rack 16.

[0042] The rotating gear 44 is movably connected to the rotating shaft 43 through the connecting shaft 45. When it revolves, it drives the stirring rod 71 to perform a superposition of lateral reciprocating motion and rotation, so that the stirring range covers the entire area of the rectangular crucible 2, eliminating the blind spot of traditional single axial stirring.

[0043] It also includes a thermal insulation component, which includes a first rectangular small aluminum silicate ceramic fiber blanket 5 covering the connection between the tank cover assembly 3 and the rectangular crucible 2, a circular small aluminum silicate ceramic fiber blanket 6 covering the outer surface of the tank cover assembly 3, and a second rectangular small aluminum silicate ceramic fiber blanket 7 covering the edge surface of the rectangular crucible 2.

[0044] It should be noted that the circular small aluminum silicate ceramic fiber blanket 6 and the second rectangular small aluminum silicate ceramic fiber blanket 7 are both adhered to the surface of the corresponding components by a high-temperature resistant adhesive; the first rectangular small aluminum silicate ceramic fiber blanket 5 is movably overlapped on the roller 9.

[0045] As a further technical solution, a first rectangular small aluminum silicate ceramic fiber blanket 5 covers the connection between the tank cover assembly 3 and the rectangular crucible 2 to block the upward conduction of high temperature;

[0046] A small round aluminum silicate ceramic fiber blanket 6 wraps the top surface of the tank cover assembly 3 to isolate high temperature radiation;

[0047] The second rectangular small aluminum silicate ceramic fiber blanket 7 covers the edge of the rectangular crucible 2 to reduce lateral heat loss;

[0048] The bottom end of the bracket assembly 1 is fixedly connected to a shock-absorbing seat 10, the top end of the bracket assembly 1 is fixedly connected to a left roller bracket 12 and a right roller bracket 11, and the top end of the tank cover assembly 3 is fixedly connected to an explosion-proof motor 13. The output shaft of the explosion-proof motor 13 is connected to the bottom end of the rotating shaft 43 via a speed reducer. The bottom end of the connecting shaft 45 is fixedly connected to a stirring rod 71, which is located inside the rectangular crucible 2.

[0049] The top of the bracket assembly 1 is fixedly connected to a drag chain matching assembly 14, and a drag chain support plate 15 is overlapped on the top of the drag chain matching assembly 14. The drag chain support plate 15 is fixedly connected to the asteroid stirring and dispersing assembly 4; the drag chain matching assembly 14 and the drag chain support plate 15 accommodate the power cord of the explosion-proof motor 13 to avoid contact between the cable and high-temperature components, thereby ensuring safety.

[0050] There is a fixed rack 16 fixedly connected between the tank cover assemblies 3, and the fixed rack 16 is in meshing transmission with the rotating gear 44.

[0051] Furthermore, a lifting eye bolt 8 is fixedly connected to the top edge of the support assembly 1. The lifting eye bolt 8 is used for hoisting the intelligent stirring and dispersing device. The support assembly 1 is hoisted above the high-temperature cracking furnace through the lifting eye bolt 8, and the shock absorber 10 absorbs the vibration during stirring to improve stability;

[0052] A roller 9 is movably connected to the inner sides of the left roller bracket 12 and the right roller bracket 11. The roller 9 is movably connected to the bottom of the support assembly 1 through a bearing and is supported at the bottom end of the first rectangular small alumina ceramic fiber blanket 5. The shock absorber 10 at the bottom of the support assembly 1 and the roller 9 form a support structure. Together with the drag chain support plate 15, transmission components such as the explosion-proof motor 13 are placed in the low-temperature area, and the normal temperature environment is maintained through air convection and heat insulation materials to avoid the influence of high temperature on the mechanical transmission accuracy.

[0053] The working principle of the overall technical structure of the present invention:

[0054] Compound motion stirring principle

[0055] The device realizes three-dimensional stirring through the planetary reduction mechanism and the compound transmission of linear motion:

[0056] The main motion of the rotating shaft 43: The explosion-proof motor 13 drives the rotating shaft 43 to rotate clockwise through the reducer, driving the rotating gear 44 sleeved on its surface to perform self-rotation motion;

[0057] Planetary gear transmission: The rotating gear 44 meshes with the fixed rack 16 fixed to the inner side of the support assembly 1. Since the fixed rack 16 is stationary, the rotating gear 44 performs a linear motion along the linear trajectory of the fixed rack 16 while rotating;

[0058] Stirring trajectory expansion: The rotating gear 44 is movably connected to the rotating shaft 43 through the connecting shaft 45. When it revolves, it drives the stirring rod 71 to perform the superposition of transverse reciprocating motion and self-rotation, so that the stirring range covers the entire area of the rectangular crucible 2, eliminating the blind area of traditional single-axial stirring.

[0059] High temperature - normal temperature double-zone isolation principle

[0060] The device realizes the temperature isolation of the working area through multiple heat insulation components:

[0061] Heat insulation layer distribution:

[0062] The first rectangular small alumina ceramic fiber blanket 5 covers the connection between the tank cover assembly 3 and the rectangular crucible 2, blocking the upward conduction of high temperature;

[0063] The circular small alumina ceramic fiber blanket 6 wraps the top surface of the tank cover assembly 3 to isolate high-temperature radiation;

[0064] The second rectangular aluminosilicate ceramic fiber blanket 7 covers the edge of the rectangular crucible 2 to reduce lateral heat dissipation;

[0065] Cooling of the drive system: The shock-absorbing seat 10 at the bottom of the support assembly 1 and the roller 9 form a support structure. Together with the drag chain support plate 15, the drive components such as the explosion-proof motor 13 are placed in the low-temperature area. Through air convection and heat-insulating materials, a normal-temperature environment is maintained to avoid the influence of high temperature on the mechanical drive accuracy.

[0066] Principle of intelligent control and energy management

[0067] PLC program control: The rotation speed and direction of the explosion-proof motor 13 are precisely adjusted through a preset program to control the stirring frequency of the rotating shaft 43 and the revolution period of the rotating gear 44, realizing intermittent eddy stirring. This not only strengthens the material mixing but also facilitates the orderly discharge of pyrolysis gas;

[0068] Linkage of the sensing system: The built-in temperature sensor monitors the temperature of the material in the rectangular crucible 2 in real time and feeds it back to the PLC system to automatically adjust the stirring speed to avoid coking caused by local overheating;

[0069] Waste heat utilization: The pyrolysis tail gas and the feedstock exchange heat reversely in the heat exchanger. The device recovers the heat generated by high-temperature pyrolysis through the heat exchange design and uses it to preheat the feedstock or other process links, reducing the overall energy consumption.

[0070] Principle of mechanical structure coordination

[0071] Installation and buffering: The support assembly 1 is hoisted above the high-temperature pyrolysis furnace through the lifting ring screws 8, and the shock-absorbing seat 10 absorbs the vibration during stirring to improve stability;

[0072] Cable management: The drag chain cooperates with the assembly 14 and the drag chain support plate 15 to accommodate the power cable of the explosion-proof motor 13, avoiding contact between the cable and high-temperature components and ensuring safety;

[0073] Principle of material dispersion and reaction intensification

[0074] Shearing and crushing: The revolution of the rotating gear 44 drives the stirring components to move close to the inner wall of the rectangular crucible 2, generating a radial shearing force to crush large-particle materials and prevent carbon deposition and caking;

[0075] Enhanced convection: The composite stirring trajectory drives the material to form a three-dimensional circulating flow, breaking the laminar flow state of traditional stirring, promoting the heat exchange between the materials in the high-temperature area and the low-temperature area, and improving the temperature uniformity and pyrolysis efficiency;

[0076] Dead-angle-free coverage: The rotating gear 44 moves linearly along the fixed rack 16, and its stirring range can cover the corner areas of the rectangular crucible 2, solving the problem that traditional stirring paddles are difficult to reach the edges.

[0077] The above embodiments are only preferred embodiments of the present invention, and the scope of protection of the present invention cannot be limited thereby. Any non-substantial changes and substitutions made by those skilled in the art based on the present invention fall within the scope of protection required by the present invention.

Claims

1. An intelligent stirring and dispersing device for a high-temperature cracking furnace, characterized in that, Comprising: A bracket assembly (1), with a rectangular crucible (2) fixedly connected to the inner side of the bracket of the bracket assembly (1), and a groove cover assembly (3) provided at the open end of the rectangular crucible (2); An asteroid stirring and dispersing assembly (4), the asteroid stirring and dispersing assembly (4) comprising: A fixed bushing (41), the fixed bushing (41) being fixedly connected to the inside of the groove cover assembly (3); A rotating shaft (43), the rotating shaft (43) rotatably passing through and connecting to the inside of the fixed bushing (41), and a limiting plate (42) fixedly sleeved on the top end surface of the rotating shaft (43); A rotating gear (44), the rotating gear (44) being sleeved on the surface of the rotating shaft (43), and a connecting shaft (45) being fixedly connected to the bottom end of the rotating shaft (43).

2. The intelligent stirring and dispersing device of a high-temperature cracking furnace according to claim 1, wherein, It further includes a heat insulation component, and the heat insulation component includes a first rectangular small aluminosilicate ceramic fiber blanket (5) covering the connection part between the groove cover assembly (3) and the rectangular crucible (2), a circular small aluminosilicate ceramic fiber blanket (6) covering the outer surface of the groove cover assembly (3), and a second rectangular small aluminosilicate ceramic fiber blanket (7) covering the edge surface of the rectangular crucible (2).

3. The intelligent stirring and dispersing device for a high-temperature cracking furnace according to claim 2, characterized in that, A shock absorber seat (10) is fixedly connected to the bottom end of the bracket assembly (1), a roller bracket left (12) and a roller bracket right (11) are fixedly connected to the top end of the bracket assembly (1), and an explosion-proof motor (13) is fixedly connected to the top end of the groove cover assembly (3).

4. The intelligent stirring and dispersing device of a high-temperature cracking furnace according to claim 3, characterized in that, A roller (9) is movably connected to the inner sides of the roller bracket left (12) and the roller bracket right (11), the roller (9) is movably connected to the bottom of the bracket assembly (1) through a bearing, and is supported at the bottom end of the first rectangular small aluminosilicate ceramic fiber blanket (5).

5. The intelligent stirring and dispersing device for a high-temperature cracking furnace according to claim 1, characterized in that, A drag chain matching assembly (14) is fixedly connected to the top end of the bracket assembly (1), a drag chain support plate (15) is lapped above the drag chain matching assembly (14), and the drag chain support plate (15) is fixedly connected to the asteroid stirring and dispersing assembly (4); A fixed rack (16) is fixedly connected between the groove cover assemblies (3), and the fixed rack (16) is in meshing transmission with the rotating gear (44).

6. The intelligent stirring and dispersing device for a high-temperature cracking furnace according to claim 4, wherein, The circular small aluminosilicate ceramic fiber blanket (6) and the second rectangular small aluminosilicate ceramic fiber blanket (7) are both pasted on the corresponding component surfaces through a high-temperature adhesive; the first rectangular small aluminosilicate ceramic fiber blanket (5) is movably lapped on the roller (9).

7. The intelligent stirring and dispersing device of a high-temperature cracking furnace according to claim 1, characterized in that, Lifting eye bolts (8) are further fixedly connected to the top edge of the bracket assembly (1), and the lifting eye bolts (8) are used for hoisting the intelligent stirring and dispersing device.

8. The intelligent stirring and dispersing device of a high-temperature cracking furnace according to claim 1, characterized in that, The output shaft of the explosion-proof motor (13) is in transmission connection with the bottom end of the rotating shaft (43) through a speed reducer, and a stirring rod (71) is fixedly connected to the bottom end of the connecting shaft (45), and the stirring rod (71) is located inside the rectangular crucible (2).

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