Spiral heating device suitable for vertical waste tire cracking furnace

Abstract

The utility model relates to a spiral heating device suitable for a vertical waste tire cracking furnace, and belongs to the technical field of solid waste treatment. Comprising a motor, a speed reducer, a rotary rotating structure, a straight barrel section, a combustor, a main tempering flue, a main flue, an upper collecting box, a spiral cooling fin, a lower collecting box, a tail end tempering flue, a collecting flue, a support and an external connection flue. The spiral heating device suitable for the vertical type waste tire cracking furnace is simple and reasonable, the spiral cooling fins increase the specific surface area of heat transfer, the spiral discharging structure is beneficial to reducing the falling speed of waste tires and prolonging the retention time, the tires are effectively prevented from falling rapidly and being stacked at the bottom, the cracking efficiency is further improved, and the service life of the tires is prolonged. The cracking furnace is suitable for waste tires.

Description

Technical Field

[0001] The utility model relates to a spiral heating device applicable to a vertical waste tire cracking furnace, belonging to the technical field of solid waste treatment. Background Art

[0002] Chinese utility model patent with application number 2023225002034 and invention creation name of a spiral heating device applicable to a waste tire vertical rotation cracking reaction device discloses a spiral heating device for a vertical cracking furnace, including a discharge valve, an ash storage tank, a steel wire outlet, a cylinder body, a feed inlet, a feeding mechanism, a flue gas outlet, an air outlet, a rotating component, a material distribution plate, a burner, an ash outlet, a rotary rotation structure and a support; the feeding mechanism is connected to the cylinder body through the feed inlet, the feed inlet is arranged at the top of the cylinder body, an inner cylinder is arranged inside the cylinder body, the flue gas outlet is arranged at the top of the inner cylinder, the burner is arranged inside the inner cylinder, the rotating component is connected to the cylinder body through a packing ring, the rotary rotation structure is arranged on the support at the bottom of the inner cylinder, the bottom of the inner cylinder is connected to the support, the material distribution plate is connected to the inner cylinder, and the cylinder body is provided with a steel wire outlet and an ash outlet.

[0003] The heat transfer structure of the above cracking furnace is a cross-shaped heat transfer pipe, and the heat transfer surface area is relatively small, which cannot meet the heat demand for tire cracking. When waste tires are fed, due to the large gaps in the heat transfer pipes, the tires are likely to accumulate at the bottom. Therefore, providing a simple, reasonable, easy-to-implement and widely applicable spiral heating device for a vertical cracking furnace has become an urgent technical problem to be solved in this technical field. Summary of the Invention

[0004] The purpose of the utility model is to provide a spiral heating device applicable to a vertical waste tire cracking furnace, which is simple and reasonable. The spiral heat dissipation fins increase the specific surface area of heat transfer, and the spiral feeding structure is conducive to slowing down the falling speed of waste tires, prolonging the residence time, effectively preventing the rapid falling and bottom accumulation of tires, and further improving the cracking efficiency, and is applicable to the cracking furnace of waste tires.

[0005] To achieve the above purpose, the technical solution provided by the utility model is:

[0006] A spiral heating device applicable to a vertical waste tire pyrolysis furnace, characterized in that it includes a motor, a speed reducer, a rotary rotating structure, a straight cylinder section, a burner, a main tempering flue, a main flue, an upper header, spiral fins, a lower header, an end tempering flue, a collecting flue, a support, and an external connecting flue; the motor is connected to the speed reducer, the speed reducer is connected to the rotary rotating structure, the rotary rotating structure is connected to the lower end of the straight cylinder section, the upper end of the straight cylinder section is connected to the main flue, the burner is arranged at the bottom of the main flue, the lower end of the main tempering flue is connected to the lower header, the upper end of the main tempering flue is connected to the upper header, the rotary rotating structure is connected to the main tempering flue through the straight cylinder section, the spiral fins are connected to the main flue, the lower end of the main flue is connected to the lower header, the upper end of the main flue is connected to the upper header, the lower header is connected to the end tempering flue, the upper end of the end tempering flue is connected to the collecting flue, the collecting flue extends to the outside through the middle gap of the support, and the lower end of the collecting flue is connected to the external connecting flue.

[0007] Preferably, there are six groups of the spiral fins, including a first spiral fin, a second spiral fin, a third spiral fin, a fourth spiral fin, a fifth spiral fin, and a sixth spiral fin; the spacing is 700 mm; the spiral fins are arranged along the circumference of the main flue 7, and the top view is an orange petal pattern. The spiral fins are welded perpendicular to the center line of the main flue 7, and the inclination angle is 35° - 55°. The inclination angle of each group of spiral fins is the same, and there are flanges around the spiral fins, with the flange being 2 - 5 mm.

[0008] Preferably, the rotary rotating structure includes a driving wheel, a driven wheel, a rotary upper cover, and a rotary lower cover. The driving wheel is engaged with the driven wheel through gears, and the rotary upper cover, the driven wheel, and the rotary lower cover are connected in sequence.

[0009] Preferably, the speed reducer is connected to the driving wheel, the driven wheel is connected to the main tempering flue through the straight cylinder section, and the rotary upper cover is connected to the lower end of the straight cylinder section; the speed reducer drives the driving wheel to rotate, the driving wheel drives the driven wheel to rotate through gears, and the driven wheel drives the main tempering flue to rotate.

[0010] Preferably, the material of the straight cylinder section is 310S, and its size is the same as the size of the bottom end of the main flue.

[0011] Preferably, the burner adopts a low - nitrogen burner.

[0012] Preferably, the main tempering flue includes a first main tempering flue, a second main tempering flue, a third main tempering flue, a fourth main tempering flue, a fifth main tempering flue, and a sixth main tempering flue.

[0013] Preferably, the material of the main tempering flue is 310S.

[0014] Preferably, the main flue includes a lower end of the main flue and an upper end of the main flue.

[0015] Preferably, the material of the upper header and the lower header is 310S.

[0016] Preferably, the material of the external connection flue is 310S.

[0017] Preferably, the material of the support is carbon steel.

[0018] Preferably, the number of the spiral fins is 8, 10, or 12.

[0019] Preferably, the spiral fins are welded to the main flue, the main flue is welded to the straight section, the straight section is welded to the rotary upper cover, the rotary upper cover is bolted to the driven wheel, the driven wheel is bolted to the rotary lower cover, and the rotary lower cover is welded to the support. The spiral fins, the main flue, the straight section, the rotary upper cover, and the driven wheel form a rotating shaft body, which operates stably on the rotary lower cover and the support and makes a uniform circular motion driven by a gear at a rotation rate of 4 r / h, 6 r / h, 8 r / h, or 10 r / h.

[0020] Advantageous effects:

[0021] The spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace is simple and reasonable. The spiral fins increase the specific surface area of heat transfer. The spiral feeding structure is conducive to slowing down the falling speed of waste tires, prolonging the residence time, effectively preventing the rapid falling of tires and bottom accumulation, and further improving the cracking efficiency, and is applicable to the cracking furnace of waste tires.

[0022] The following further illustrates the present utility model through the drawings and specific embodiments, but it does not mean a limitation to the protection scope of the present utility model. Brief description of the drawings

[0023] Figure 1 is a schematic cross-sectional structure diagram of the spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace in Embodiment 1.

[0024] Figure 2 is an enlarged schematic structure diagram of the rotary structure in the spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace in Embodiment 1.

[0025] Figure 3 is a schematic top view structure diagram of the spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace in Embodiment 1.

[0026] Figure 4 is an enlarged schematic structure diagram of the main tempering flue in the spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace in Embodiment 1.

[0027] Figure 5-1It is a top view sectional structure schematic diagram of a single spiral heat dissipation fin in the spiral heating device applicable to a vertical waste tire pyrolysis furnace in Embodiment 1 of the present utility model.

[0028] Figure 5-2 It is a side view sectional structure schematic diagram of a single spiral heat dissipation fin in the spiral heating device applicable to a vertical waste tire pyrolysis furnace in Embodiment 1 of the present utility model.

[0029] Main reference numeral description:

[0030] 1 Motor 2 Reducer

[0031] 3 Rotary rotating structure 4 Straight cylinder section

[0032] 3-1 Driving wheel 3-2 Driven wheel

[0033] 3-3 Rotary upper cover 3-4 Rotary lower cover

[0034] 5 Burner 6 Main tempering flue

[0035] 6-1 First main tempering flue 6-2 Second main tempering flue

[0036] 6-3 Third main tempering flue 6-4 Fourth main tempering flue

[0037] 6-5 Fifth main tempering flue 6-6 Sixth main tempering flue

[0038] 7 Main flue 7-1 Lower end of main flue

[0039] 7-2 Upper end of main flue 8 Upper header

[0040] 9-1 First spiral heat dissipation fin 9-2 Second spiral heat dissipation fin

[0041] 9-3 Third spiral heat dissipation fin 9-4 Fourth spiral heat dissipation fin

[0042] 9-5 Fifth spiral heat dissipation fin 9-6 Sixth spiral heat dissipation fin

[0043] 10 Lower header 11 End tempering flue

[0044] 12 Collection flue 13 Support

[0045] 14 External connection flue Detailed implementation manners

[0046] Unless otherwise specified, in the embodiments of the present utility model, the used components are all conventional components that can be purchased in the market of the technical field, the connections between the components are all conventional connections, and the unit is a weight unit.

[0047] Embodiment 1

[0048] AsFigure 1 shown is a schematic cross-sectional structure diagram of a spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; as Figure 2 shown is an enlarged structure diagram of a rotary rotation structure in the spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; as Figure 3 shown is a schematic top view structure diagram of the spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; as Figure 4 shown is an enlarged structure diagram of a main tempering flue in the spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; as Figure 5-1 shown is a schematic top view cross-sectional structure diagram of a single spiral fin in the spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; as Figure 5-2 shown is a schematic side view cross-sectional structure diagram of a single spiral fin in the spiral heating device applicable to a vertical waste tire cracking furnace according to Embodiment 1 of the present utility model; wherein, 1 is a motor, 2 is a speed reducer, 3 is a rotary rotation structure, 3-1 is a driving wheel, 3-2 is a driven wheel, 3-3 is an upper rotary cover, 3-4 is a lower rotary cover, 4 is a straight tube section, 5 is a burner, 6 is a main tempering flue, 6-1 is a first main tempering flue, 6-2 is a second main tempering flue, 6-3 is a third main tempering flue, 6-4 is a fourth main tempering flue, 6-5 is a fifth main tempering flue, 6-6 is a sixth main tempering flue, 7 is a main flue, 7-1 is the lower end of the main flue, 7-2 is the upper end of the main flue, 8 is an upper header, 9-1 is a first spiral fin, 9-2 is a second spiral fin, 9-3 is a third spiral fin, 9-4 is a fourth spiral fin, 9-5 is a fifth spiral fin, 9-6 is a sixth spiral fin, 10 is a lower header, 11 is a terminal tempering flue, 12 is a collecting flue, 13 is a support, 14 is an external connecting flue;

[0049] The spiral heating device applicable to a vertical waste tire pyrolysis furnace in Embodiment 1 of the present utility model includes a motor 1, a speed reducer 2, a rotary rotating structure 3, a straight cylinder section 4, a burner 5, a main tempering flue 6, a main flue 7, an upper header 8, spiral fins, a lower header 10, an end tempering flue 11, a collecting flue 12, a support 13, and an external connecting flue 14; the motor 1 is connected to the speed reducer 2, the speed reducer 2 is connected to the rotary rotating structure 3, the rotary rotating structure 3 is connected to the lower end of the straight cylinder section 4, the upper end of the straight cylinder section 4 is connected to the main flue 7, the burner 5 is arranged at the bottom of the main flue 7, the lower end of the main tempering flue 6 is connected to the lower header 10, the upper end of the main tempering flue 6 is connected to the upper header 8, the rotary rotating structure 3 is connected to the main tempering flue 6 through the straight cylinder section 4, six groups of spiral fins (the first spiral fin 9-1, the second spiral fin 9-2, the third spiral fin 9-3, the fourth spiral fin 9-4, the fifth spiral fin 9-5, and the sixth spiral fin 9-6) are evenly distributed on the main flue 7 from top to bottom in sequence and are welded to the main flue 7, the lower end (the lower end 7-1 of the main flue) of the main flue 7 is connected to the lower header 10, the upper end (the upper end 7-2 of the main flue) of the main flue 7 is connected to the upper header 8, the lower header 10 is connected to the end tempering flue 11, the end tempering flue 11 is connected to the upper end of the collecting flue 12, the collecting flue 12 extends to the outside through the middle gap of the support 13, and the lower end of the collecting flue 12 is connected to the external connecting flue 14;

[0050] The rotary rotating structure 3 includes a driving wheel 3-1, a driven wheel 3-2, a rotary upper cover 3-3, and a rotary lower cover 3-4. The driving wheel 3-1 is in gear connection with the driven wheel 3-2 through gears, and the rotary upper cover 3-3, the driven wheel 3-2, and the rotary lower cover 3-4 are connected in sequence; wherein, the speed reducer 2 is connected to the driving wheel 3-1, the speed reducer 2 drives the driving wheel 3-1 to rotate, the driving wheel 3-1 drives the driven wheel 3-2 to rotate through gears, the driven wheel 3-2 drives the main tempering flue 6 to rotate, and the driven wheel 3-2 is connected to the main tempering flue 6 through the straight cylinder section 4; the rotary upper cover 3-3 is connected to the lower end of the straight cylinder section 4;

[0051] The material of the straight cylinder section 4 is 310S, and its size is the same as the size of the bottom end of the main flue, and it can be φ2800mm, φ3500mm, φ4500mm;

[0052] The burner 5 adopts a low-nitrogen burner;

[0053] The main tempering flue 6 includes a first main tempering flue 6-1, a second main tempering flue 6-2, a third main tempering flue 6-3, a fourth main tempering flue 6-4, a fifth main tempering flue 6-5, and a sixth main tempering flue 6-6; the material of the main tempering flue 6 is 310S, and its size is related to the main flue 7. The single main tempering flue can be φ200mm, φ300mm, φ400mm;

[0054] The main flue 7 includes a lower end 7-1 and an upper end 7-2 of the main flue; the material of the main tempering flue is 310S, and the size is related to the processing capacity of waste tires, which can be φ2800mm, φ3500mm, φ4500mm;

[0055] In this embodiment, six groups of spiral fins are arranged on the main flue 7 from top to bottom, namely the first spiral fin 9-1, the second spiral fin 9-2, the third spiral fin 9-3, the fourth spiral fin 9-4, the fifth spiral fin 9-5, and the sixth spiral fin 9-6; the spacing is 700mm; the spiral fins are arranged along the circumference of the main flue 7, and the top view is an orange petal pattern. The spiral fins are welded perpendicular to the center line of the main flue 7, and the inclination angle is related to the residence time of the tires, which can be 35°-55°, and the inclination angle of each group of spiral fins is the same; there is a hem around the spiral fin, and the hem is 2-5mm.

[0056] The materials of the upper header 8 and the lower header 10 are both 310S, and both adopt circular arcs. The size is related to the main flue, which can be φ800mm-φ1400mm;

[0057] The materials of the end tempering flue 11, the collecting flue 12, and the external connection flue 14 are 310S. The end tempering flue 11 can be φ200mm, φ300mm, φ400mm, and the collecting flue 12 and the external connection flue 14 can be φ400mm, φ500mm, φ600mm;

[0058] The material of the support 13 is carbon steel, which can be circular, φ1500mm, φ2500mm, or square, 1200mm*1200mm, 2600mm*2600mm;

[0059] The number of each group of spiral fins can be 8, 10, or 12.

[0060] The operation process of the spiral heating device of the present utility model applicable to a vertical waste tire cracking furnace is as follows:

[0061] Debug the rotary drive mechanism 3, adjust the flow rate of cracking gas or natural gas, introduce the cracking gas or natural gas into the burner 5, ignite it to generate high-temperature flue gas. The high-temperature flue gas flows along the main flue 7, the upper header 8, the main tempering flue 6, the lower header 10, and the end tempering flue 11, enters the collecting flue 12, and then enters the subsequent flue gas treatment equipment through the external connection flue 14;

[0062] In this embodiment, six groups of spiral radiators are welded to the main flue 7, the main flue 7 is welded to the straight cylinder section 4, the straight cylinder section 4 is welded to the rotary upper cover 3-3, the rotary upper cover 3-3 is bolted to the driven wheel 3-2, the driven wheel 3-2 is bolted to the rotary lower cover 3-4, and the rotary lower cover 3-4 is welded to the support 12. In this way, six groups of spiral radiators, the main flue, the straight cylinder section, the rotary upper cover, and the driven wheel form a rotating shaft body, which operates stably on the rotary lower cover and the support, and makes a uniform circular motion driven by the gear. The rotation rate can be 4 r / h, 6 r / h, 8 r / h, 10 r / h, which is adjusted according to the different amounts of tire cracking.

[0063] In this embodiment, the main functions of the spiral heating device are as follows: the settings of the main flue 7, the main tempering flue 6, and the spiral radiators increase the heat transfer surface area by 220%, greatly improving the heat radiation efficiency. At the same time, the rotating main tempering flue and spiral radiators greatly increase the effective contact area with the tires. The spiral-shaped feeding structure is conducive to slowing down the falling speed of waste tires. From top to bottom, the tires are fully cracked, and the fully cracked part of the tire surface is broken and peeled off by the tempering flue and spiral radiators. The spiral radiators extend the residence time of the tires, effectively preventing the rapid falling of the tires and the accumulation at the bottom, and greatly improving the cracking efficiency, which is suitable for the cracking of waste tires.

[0064] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention or equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims

1. A spiral heating device applicable to a vertical waste tire pyrolysis furnace, characterized in that: It includes a motor, a speed reducer, a rotary rotating structure, a straight barrel section, a burner, a main return flue, a main flue, an upper header, spiral fins, a lower header, an end return flue, a collecting flue, a support, and an external connecting flue; the motor is connected to the speed reducer, the speed reducer is connected to the rotary rotating structure, the rotary rotating structure is connected to the lower end of the straight barrel section, the upper end of the straight barrel section is connected to the main flue, the burner is arranged at the bottom of the main flue, the lower end of the main return flue is connected to the lower header, the upper end of the main return flue is connected to the upper header, the rotary rotating structure is connected to the main return flue through the straight barrel section, the spiral fins are connected to the main flue, the lower end of the main flue is connected to the lower header, the upper end of the main flue is connected to the upper header, the lower header is connected to the end return flue, the upper end of the end return flue is connected to the collecting flue, the collecting flue extends to the outside through the middle gap of the support, and the lower end of the collecting flue is connected to the external connecting flue.

2. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 1, characterized in that: The spiral fins are six groups, including the first spiral fin, the second spiral fin, the third spiral fin, the fourth spiral fin, the fifth spiral fin, and the sixth spiral fin; the spacing is 700 mm; the spiral fins are arranged along the circumference of the main flue (7), and the top view is an orange petal pattern. The spiral fins are welded perpendicular to the center line of the main flue (7), and the inclination angle is 35° - 55°. The inclination angle of each group of spiral fins is the same. There is a hem on the periphery of the spiral fin, and the hem is 2 - 5 mm.

3. The spiral heating device applicable to a vertical waste tire pyrolysis furnace according to claim 2, characterized in that: The rotary rotating structure includes a driving wheel, a driven wheel, a rotary upper cover, and a rotary lower cover. The driving wheel is tooth-connected to the driven wheel through a gear, and the rotary upper cover, the driven wheel, and the rotary lower cover are connected in sequence.

4. The spiral heating device applicable to the vertical waste tire cracking furnace according to claim 3, characterized in that: The speed reducer is connected to the driving wheel. The speed reducer drives the driving wheel to rotate. The driving wheel drives the driven wheel to rotate through a gear. The driven wheel drives the main return flue to rotate. The driven wheel is connected to the main return flue through the straight barrel section; the rotary upper cover is connected to the lower end of the straight barrel section.

5. The spiral heating device applicable to the vertical waste tire cracking furnace according to claim 4, characterized in that: The material of the straight barrel section is 310s, and the burner is a low-nitrogen burner.

6. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 5, wherein: The main return flue includes the first main return flue, the second main return flue, the third main return flue, the fourth main return flue, the fifth main return flue, and the sixth main return flue.

7. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 6, characterized in that: The material of the main return flue is 310S.

8. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 7, characterized in that: The main flue includes a lower end of the main flue and an upper end of the main flue; the main flue (7) is made of 310S material.

9. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 8, characterized in that: The upper header and the lower header are made of 310S material. The end return flue, the collecting flue, and the external connecting flue are made of 310S material. The support is made of carbon steel material.

10. The spiral heating device applicable to the vertical waste tire pyrolysis furnace according to claim 9, wherein: The spiral fins are welded to the main flue, the main flue is welded to the straight barrel section, the straight barrel section is welded to the rotary upper cover, the rotary upper cover is bolted to the driven wheel, the driven wheel is bolted to the rotary lower cover, the rotary lower cover is welded to the support. The spiral fins, the main flue, the straight barrel section, the rotary upper cover, and the driven wheel form a rotating shaft body, which runs stably relying on the rotary lower cover and the support, and makes a uniform circular motion under the drive of the gear. The rotation speed is 4 r / h, 6 r / h, 8 r / h, 10 r / h.

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