Thermal cracking equipment

Abstract

The utility model provides thermal cracking equipment, which belongs to the technical field of solid waste thermal cracking treatment, and comprises a reaction kettle and a riding wheel walking device for lifting the reaction kettle and moving along the axial direction of the reaction kettle together with the reaction kettle when the reaction kettle is heated and expanded, and the riding wheel walking device comprises a stop ring and a riding wheel assembly; the stopping ring is sleeved outside the reaction kettle; the two groups of riding wheel assemblies are oppositely arranged on two sides of the bottom of the reaction kettle left and right, and each riding wheel assembly comprises a main riding wheel body and an auxiliary riding wheel body; the vertical deviation angle of the main riding wheel body relative to the reaction kettle is 35-38 degrees; and the vertical deviation angle of the auxiliary riding wheel body relative to the reaction kettle is 60-63 degrees. The utility model solves the technical problems that the riding wheel used by the existing thermal cracking reaction kettle is only provided with a group of driving riding wheels, and the kettle body easily causes radial displacement during operation, so that the kettle body cannot rub the riding wheel body during operation, and the kettle body is suspended to cause axial deformation of the kettle body, and further improves the stability of the reaction kettle in the operation process.

Description

Technical Field

[0001] The utility model belongs to the technical field of solid waste pyrolysis treatment, and particularly relates to a pyrolysis device. Background Art

[0002] The thermal cracking of waste tires refers to an irreversible thermal chemical reaction in an anaerobic or anoxic atmosphere, in which the organic matter in waste tires is cracked by high temperature, volatile products are released, and solid coke is formed. Gas, liquid and solid products can be formed in the incomplete thermal degradation process. By using this method, waste tires can be completely cracked into useful products such as pyrolysis oil, pyrolysis carbon black and pyrolysis non-condensable gas. The pyrolysis reactor is a key structure used in the thermal cracking process of waste tires. The high-temperature and high-pressure environment in the reactor provides the reaction conditions for the thermal cracking of waste tires. Therefore, maintaining the stability of the reactor during the thermal cracking process is the key to ensuring the safe and stable operation of the thermal cracking of waste tires. The supporting wheel is an important part of supporting the reactor. It plays the role of supporting the tire and bearing the entire weight of the pyrolysis reactor, and enables the cylinder body and the tire to rotate smoothly on the supporting wheel. The supporting wheel device bears the weight of the entire rotating part. Therefore, it is a component working under heavy load and should enable the girth of the cylinder body to rotate smoothly on the supporting wheel.

[0003] Chinese Patent CN211706788U discloses an external rotation type pyrolysis reactor supporting wheel traveling mechanism, belonging to the field of solid waste recycling and treatment. It includes a blocking ring sleeved outside the external rotation type pyrolysis reactor, a supporting wheel assembly concavely and convexly connected with the blocking ring, and a supporting wheel traveling assembly arranged below the supporting wheel assembly; the blocking ring is a convex structure; the supporting wheel assembly includes a supporting wheel bracket, a supporting wheel body mounted on the supporting wheel bracket, and a connecting base arranged below the supporting wheel bracket. The supporting wheel body is connected with the supporting wheel bracket through a first bearing; the supporting wheel body is cylindrical, the bearing passes through the supporting wheel body along the central axis of the supporting wheel body, and a groove for mating connection with the blocking ring is arranged on the circumferential side surface of the supporting wheel body. The utility model overcomes the problem of excessive friction between the existing external rotation type pyrolysis reactor and the supporting wheel body due to thermal expansion and contraction during heating, and has the characteristics of facilitating the automatic walking and telescoping of the external rotation type pyrolysis reactor, providing a stable operation environment for the external rotation type pyrolysis reactor, and prolonging the service life of the external rotation type pyrolysis reactor.

[0004] However, the supporting wheel used in the above-mentioned pyrolysis reactor is only equipped with a set of driving supporting wheels. During the operation of the reactor body, radial displacement is likely to occur, resulting in the reactor body not rubbing against the supporting wheel body during operation, causing the reactor body to be suspended and the axial deformation of the reactor body. Summary of the Utility Model

[0005] The details of one or more embodiments of the present utility model are set forth in the following drawings and description, so as to make other features, objects and advantages of the present application more concise and understandable.

[0006] The utility model provides a pyrolysis device, which solves the technical problem that the supporting wheels used in the existing pyrolysis reactor are only equipped with a set of driving supporting wheels, and the reactor body is prone to radial displacement during operation, resulting in the reactor body not being able to rub against the supporting wheel body during operation, causing the reactor body to be suspended and axially deformed, and further improving the stability of the reactor during operation.

[0007] The utility model discloses a pyrolysis device, which includes a reactor, and a supporting wheel walking device that supports the reactor and moves along the axial direction of the reactor together with the reactor when the reactor is heated and expanded. The supporting wheel walking device includes a stop ring and a supporting wheel assembly; the stop ring is sleeved outside the reactor; two sets of the supporting wheel assemblies are arranged on both sides of the bottom of the reactor relatively left and right, and the supporting wheel assembly includes a main supporting wheel body and an auxiliary supporting wheel body; the outer side surface of the main supporting wheel body is cylindrical and is connected with the stop ring in a concave-convex manner, the central axis of the main supporting wheel body is parallel to the central axis of the reactor, and the vertical offset angle of the main supporting wheel body relative to the reactor is 35-38°; the auxiliary supporting wheel body is located above the main supporting wheel body, the outer side surface of the auxiliary supporting wheel body is cylindrical and is connected with the stop ring in a concave-convex manner, the central axis of the auxiliary supporting wheel body is parallel to the central axis of the reactor, and the vertical offset angle of the auxiliary supporting wheel body relative to the reactor is 60-63°.

[0008] In some embodiments, the supporting wheel assembly further includes a main supporting wheel body fixing member, an auxiliary supporting wheel body fixing member, and a mounting base; the main supporting wheel body fixing member includes a main supporting wheel bracket, and the main supporting wheel body is mounted on the main supporting wheel bracket through a bearing; the auxiliary supporting wheel body fixing member includes an auxiliary supporting wheel bracket, and the auxiliary supporting wheel body is mounted on the auxiliary supporting wheel bracket through a bearing; the mounting base fixedly connects the main supporting wheel bracket and the auxiliary supporting wheel bracket; the supporting wheel walking device further includes a supporting wheel walking assembly located below the mounting base, and when the reactor is heated and expanded, the supporting wheel walking assembly drives the supporting wheel assembly to move along the axial direction of the reactor together with the reactor.

[0009] In some embodiments, the supporting wheel walking device further includes a cylinder arranged outside the mounting base, and the cylinders on the left and right sides of the reactor are arranged oppositely; when a gap is generated between the stop ring and the main supporting wheel body or between the stop ring and the auxiliary supporting wheel body, the cylinders on the left and right sides drive the mounting bases on the left and right sides of the reactor to move towards each other and clamp the reactor.

[0010] In some embodiments, the stop ring is a convex structure, and grooves matching the convex structure are formed in the circumferences of the main supporting wheel body and the auxiliary supporting wheel body.

[0011] In some of these embodiments, the supporting wheel traveling device further includes a lifting member located directly below the reactor.

[0012] In some of these embodiments, there are at least two sets of the supporting wheel traveling device, with one set arranged at the front end of the reactor and one set arranged at the rear end of the reactor.

[0013] In some of these embodiments, the supporting wheel traveling device further includes a limiter located at the rear end of the reactor, and the limiter is used to limit the movement of the supporting wheel assembly located at the rear end of the reactor.

[0014] In some of these embodiments, there is also a heating box body sleeved outside the middle part of the reactor, and the inner diameter of the reactor located inside the heating box body is larger than the inner diameter of the reactor at both ends outside the heating box body; the supporting wheel traveling device is connected to the reactor at both ends outside the heating box body.

[0015] In some of these embodiments, there is also a silo connected to the feed inlet of the reactor, a metering belt conveyor connected to the feed inlet of the silo, and a buffer silo connected to the feed inlet of the metering belt conveyor.

[0016] In some of these embodiments, there is also a rear seal bin connected to the discharge outlet of the reactor, and a screw slag discharger connected to the discharge outlet of the rear seal bin.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0018] The present utility model provides a pyrolysis device. By setting the main supporting wheel body and the auxiliary supporting wheel body, and at the same time defining the positional relationship between the main supporting wheel body, the auxiliary supporting wheel body and the reactor, the stability during the operation of the reactor is further improved, and the occurrence of radial displacement caused by the reactor being heated is avoided, so as to prevent the situation that the reactor body cannot contact the supporting wheel body during operation, resulting in the axial deformation problem of the reactor body being suspended. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings described herein are used to provide a further understanding of the present utility model, and constitute a part of the present utility model. The illustrative embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation to the present utility model. In the drawings:

[0020] Figure 1 is a schematic structural diagram of the reactor and the supporting wheel traveling device in the pyrolysis device provided by the embodiment of the present utility model;

[0021] Figure 2 is another perspective structural diagram of the reactor and the supporting wheel traveling device in the pyrolysis device provided by the embodiment of the present utility model;

[0022] Figure 3 Schematic diagram of the cooperation between the reaction kettle and the supporting wheel traveling device in the pyrolysis equipment provided by the embodiment of the present utility model;

[0023] Figure 4 Schematic diagram of the structure of the pyrolysis equipment provided by the embodiment of the present utility model;

[0024] In the above figures: 1, reaction kettle; 2, supporting wheel traveling device; 201, stop ring; 202, main supporting wheel body; 203, auxiliary supporting wheel body; 204, main supporting wheel body fixing member; 205, auxiliary supporting wheel body fixing member; 206, installation base; 207, supporting wheel traveling assembly; 208, cylinder; 209, lifting member; 3, heating box; 4, feed bin; 5, metering belt conveyor; 6, buffer bin; 7, rear seal bin; 8, screw slag discharger. Specific embodiments

[0025] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be described and explained below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments provided by the present utility model without making creative efforts fall within the scope of protection of the present utility model.

[0026] The embodiment of the present utility model provides a pyrolysis equipment, Figure 1 For the structural schematic diagram of the pyrolysis equipment according to the embodiment of the present utility model. Refer to Figure 1 As shown, the equipment at least includes a reaction kettle 1, and a supporting wheel traveling device 2 that supports the reaction kettle 1 and moves along the axial direction of the reaction kettle 1 together with the reaction kettle 1 when the reaction kettle 1 expands due to heat, such as Figure 2 , 3, as shown in Fig. 4, the supporting wheel traveling device 2 includes a stop ring 201 and a supporting wheel assembly; the stop ring 201 is sleeved outside the reactor 1; two groups of supporting wheel assemblies are arranged on both sides of the bottom of the reactor 1 relatively left and right. The supporting wheel assembly includes a main supporting wheel body 202 and an auxiliary supporting wheel body 203; the outer side surface of the main supporting wheel body 202 is cylindrical and is in concave-convex connection with the stop ring 201. The central axis of the main supporting wheel body 202 is parallel to the central axis of the reactor 1, and the vertical offset angle of the main supporting wheel body 202 relative to the reactor 1 is 35 - 38°; the auxiliary supporting wheel body 203 is located above the main supporting wheel body 202. The outer side surface of the auxiliary supporting wheel body 203 is cylindrical and is in concave-convex connection with the stop ring 201. The central axis of the auxiliary supporting wheel body 203 is parallel to the central axis of the reactor 1, and the vertical offset angle of the auxiliary supporting wheel body 203 relative to the reactor 1 is 60 - 63°. In some embodiments, the stop ring 201 is a convex structure, and grooves matching the convex structure are provided on the circumferences of both the main supporting wheel body 202 and the auxiliary supporting wheel body 203.

[0027] By setting the main supporting wheel body 202 and the auxiliary supporting wheel body 203, and further defining the positional relationship between the main supporting wheel body 202, the auxiliary supporting wheel body 203 and the reactor 1, the above pyrolysis equipment further improves the stability during the operation of the reactor 1, avoids the radial displacement caused by the heating of the reactor 1, so as to prevent the kettle body from not rubbing against the supporting wheel body during operation, resulting in the problem of axial deformation of the kettle body due to the suspension of the kettle body. The above technical solution specifically defines the vertical offset angle of the main supporting wheel body 202 relative to the reactor 1 and the vertical offset angle of the auxiliary supporting wheel body 203 relative to the reactor 1. It can be understood that the vertical offset angle of the main supporting wheel body 202 relative to the reactor 1 can also be 36°, 37° and any value within this range, and the vertical offset angle of the auxiliary supporting wheel body 203 relative to the reactor 1 can also be 61°, 62° and any value within this range. It should be noted that the reactor 1 of the above pyrolysis equipment can be an externally rotating reactor 1 or an internally rotating reactor 1. The above supporting wheel traveling device 2 can not only meet the axial and radial movements caused by heating of the internally rotating reactor 1, but also meet the axial and radial movements caused by heating of the externally rotating reactor 1 under the condition of meeting the rotation requirements of the externally rotating reactor 1, and always maintain clamping with the reactor 1 to ensure the stability of the operation process of the reactor 1.

[0028] In order to further improve the operating stability of the reactor 1 and make it more suitable for an externally rotating reactor 1, the idler assembly further includes a main idler body fixing member 204, an auxiliary idler body fixing member 205, and a mounting base 206; the main idler body fixing member 204 includes a main idler bracket, and the main idler body 202 is mounted on the main idler bracket through bearings; the auxiliary idler body fixing member 205 includes an auxiliary idler bracket, and the auxiliary idler body 203 is mounted on the auxiliary idler bracket through bearings; the mounting base 206 fixedly connects the main idler bracket and the auxiliary idler bracket; the idler traveling device 2 further includes an idler traveling assembly 207 located below the mounting base 206. When the reactor 1 expands due to heat along the hot line, the idler traveling assembly 207 drives the idler assembly and the reactor 1 to move axially along the reactor 1.

[0029] In order to improve the accuracy of automatic tension control, the idler traveling device 2 further includes a cylinder 208 provided outside the mounting base 206, and the cylinders 208 located on the left and right sides of the reactor 1 are arranged oppositely; when a gap is generated between the stop ring 201 and the main idler body 202 or between the stop ring 201 and the auxiliary idler body 203, the cylinders 208 on the left and right sides drive the mounting bases 206 located on the left and right sides of the reactor 1 to move towards each other and clamp the reactor 1.

[0030] Further, the idler traveling device 2 further includes a lifting member 209 located directly below the reactor 1. The setting of the lifting member 209 realizes the lifting of the bottom of the reactor 1, providing an additional layer of safety guarantee. It should be noted that when the reactor 1 is an externally rotating reactor 1, the lifting member 209 is preferably close to but not in contact with the reactor 1, so that it does not affect the rotation of the reactor 1, and at the same time can lift the bottom of the reactor 1 when the reactor 1 undergoes radial expansion or movement, ensuring the stability of the reactor 1.

[0031] In some embodiments, the idler traveling device 2 is at least two groups, one group is arranged at the front end of the reactor 1, and one group is arranged at the rear end of the reactor 1. Further, the idler traveling device 2 further includes a limiter located at the rear end of the reactor 1, and the limiter is used to limit the movement of the idler assembly located at the rear end of the reactor 1.

[0032] In order to improve the sealing performance of feeding and slag discharging, it further includes a heating box body 3 sleeved outside the middle part of the reactor 1, and the inner diameter of the reactor 1 located inside the heating box body 3 is larger than the inner diameter of the reactor 1 at both ends outside the heating box body 3; the idler traveling device 2 is connected to the reactor 1 at both ends outside the heating box body 3.

[0033] In some embodiments, it further includes a silo 4 connected to the feeding port of the reactor 1, a metering belt conveyor 5 connected to the feeding port of the silo 4, and a buffer silo 6 connected to the feeding port of the metering belt conveyor 5.

[0034] Furthermore, it also includes a rear sealed bin 7 connected to the discharge port of the reactor 1 , and a spiral slag discharger 8 connected to the discharge port of the rear sealed bin 7 .

[0035] Regarding the above-mentioned thermal cracking equipment, specifically:

[0036] After the waste tires are crushed in the pre-treatment workshop, they are transported to the pyrolysis material inlet through a closed conveyor belt, and the crushed waste tire rubber blocks are unloaded into the buffer silo 6. The lower part of the buffer silo 6 is provided with a buffer silo 6 material extraction screw machine, and the discharge port of the buffer silo 6 material extraction screw machine is set in the middle of the spiral cylinder, and docked with the feed port of the lower automatic metering belt conveyor 5, and the pyrolysis material is unloaded into the automatic metering belt conveyor 5. The automatic metering belt conveyor 5 has the functions of metering and conveying. The incoming pyrolysis material moves to the right through the transmission, and the pyrolysis material is unloaded into the gravity silo 4 for cache. The gravity silo 4 adopts a vertical safety installation, and its lower part is a cone structure. The discharge port is set at the lower part of the cone and connected to the feed port of the feeding self-sealing screw machine. A transmission motor reducer is provided at the left end of the feed self-sealing screw machine, and the feed port is vertically arranged at the upper right side of the spiral cylinder. The spiral cylinder is equipped with a spiral shaft and spiral blades. The incoming pyrolysis material moves to the discharge port at the right end under the extrusion of the spiral blades and enters the front kettle body of the pyrolysis reactor 1.

[0037] The front reducer seal sleeve is a front dynamic and static matching sealing device. The right spiral cylinder of the feed self-sealing screw machine extends into the reducer pipe on the left side of the thermal cracking reactor 1. Outside the reducer pipe on the left side of the thermal cracking reactor 1, another cylinder is set at the right spiral cylinder of the feed self-sealing screw machine. A sealing packing is added between the reducer pipe on the left side of the thermal cracking reactor 1 and the upper spiral cylinder on the right side to form a front sealing device. The transmission of the thermal cracking reactor 1 is set on the left side of the thermal cracking reactor 1. The kettle body transmission driving gear cooperates with the kettle body transmission driven gear, and is driven by the kettle body transmission motor reducer to drive the thermal cracking reactor 1 to run. The front part of the kettle body is provided with a belt with a blocking ring 201 fixed on the kettle body. The front part of the kettle body with the blocking ring 201 is provided with a flange that plays a blocking role, which cooperates with the grooves set on the left side wrapped anti-displacement main support wheel body 202 and the left side wrapped anti-displacement auxiliary support wheel body 203. The wheel belt with the blocking ring 201 on the kettle body cooperates with the front wrapped anti-displacement supporting wheel device assembly (supporting wheel walking device 2), and the supporting wheel walking device 2 cooperates with the lower sliding track to perform horizontal axial movement.

[0038] The thermal cracking reactor 1 penetrates into the kettle body heating box 3 to provide the heat required for thermal cracking. The high-temperature flue gas inlet of the kettle body heating box 3 is arranged at the lower right, and the hot blast stove air outlet is connected to input high-temperature flue gas. The flue gas outlet is vertically arranged at the upper left of the kettle body heating box 3 and is discharged up to standard after being treated by an external desulfurization system. The local thermometer and local pressure gauge are vertically arranged at the upper right of the kettle body heating box 3 to detect the temperature and pressure in the kettle body heating box 3 in real time.

[0039] The pyrolysis materials conveyed by the feed self-sealing screw machine move to the right under the action of the built-in spiral blades in the thermal cracking reactor 1 and the pyrolysis residues after pyrolysis are discharged into the rear sealed bin at the discharge port. The rear of the kettle body is also provided with a girth gear with a stop ring 201 fixed on the kettle body. A flange for blocking is arranged on the girth gear with a stop ring 201 at the front of the kettle body and cooperates with the grooves arranged on the main anti-displacement supporting wheel body 202 wrapped on the left side and the auxiliary anti-displacement supporting wheel body 203 wrapped on the left side. The girth gear with a stop ring 201 on the kettle body cooperates with the rear anti-displacement supporting and blocking wheel device assembly (supporting wheel traveling device 2), and the supporting wheel traveling device 2 cooperates with the lower fixed track and is fixed by the lower fixed track limiter.

[0040] The pyrolysis residues discharged from the thermal cracking reactor 1 are cached in the rear sealed bin 7 after feeding. The local thermometer and local pressure gauge are arranged at the upper part of the top of the rear sealed bin 7 to detect the temperature and pressure in the bin. The discharge port is arranged at the lower part of the bin body of the rear sealed bin 7 and is connected to the feed inlet of the screw slag discharger 8. The discharge port of the slag-water-cooled screw discharger is arranged at the lower right of the screw cylinder body, and the output slag is sent to the next process for further processing.

[0041] The structures and functions of the above-mentioned front supporting wheel traveling device 2 and rear supporting wheel traveling device 2 are the same. The only difference is that when the thermal cracking reactor 1 moves under the action of the hot line tension, the front stopper can move axially, while the latter is fixed under the restraint of the limiter.

[0042] An assembly structure of the supporting wheel traveling device 2 is as follows: On the lower part of the anti-displacement supporting wheel frame base, there are bearings on the left side of the self-propelled mechanism of the anti-displacement supporting wheel frame and bearings on the left side of the self-propelled mechanism of the anti-displacement supporting wheel frame. The left self-propelled wheel of the anti-displacement supporting wheel frame is assembled on the bearing position and is symmetrically arranged left and right. There are bearings on the right side of the self-propelled mechanism of the anti-displacement supporting wheel frame and bearings on the right side of the self-propelled mechanism of the anti-displacement supporting wheel frame. The right self-propelled wheel of the anti-displacement supporting wheel frame is assembled on the bearing position and is symmetrically arranged left and right. On the upper part of the anti-displacement supporting wheel frame base, there is a left anti-displacement main supporting wheel tensioning cylinder 208 to automatically tension the wire tension generated by the left anti-displacement main supporting wheel body 202 and the left anti-displacement auxiliary supporting wheel body 203, preventing the radial displacement of the pyrolysis reactor 1. On the right side, there are symmetrically arranged the anti-displacement main supporting wheel body 202, automatically tensioning the wire tension generated by the right anti-displacement main supporting wheel body 202 and the right anti-displacement main supporting wheel tensioning cylinder 208, preventing the radial displacement of the pyrolysis reactor 1. In addition to the above solutions for preventing radial displacement, an axial anti-displacement device is also provided on the anti-displacement supporting and blocking wheel device assembly, that is, on the upper part of the anti-displacement supporting wheel frame base, there are also an axial anti-displacement left blocking wheel, an anti-displacement right blocking wheel, an anti-displacement left blocking wheel tensioning cylinder 208, and an anti-displacement right blocking wheel tensioning cylinder 208, which are used to prevent the axial displacement of the pyrolysis reactor 1.

[0043] The above pyrolysis equipment adopts a new type of skid-mounted pyrolysis kettle anti-displacement self-propelled supporting wheel device, and its biggest highlight is:

[0044] 1. The skid-mounted pyrolysis kettle anti-displacement self-propelled supporting wheel device is based on the driving supporting wheel, and a set of auxiliary supporting wheels is additionally installed on its upper part, making the operation of the kettle body more stable;

[0045] 2. The driving supporting wheel, the auxiliary supporting wheel, and the blocking wheel are all tensioned by the cylinder 208, without manual adjustment, and the use accuracy is higher;

[0046] 3. The anti-displacement self-propelled supporting wheel device can automatically walk and expand during high-temperature wire tension, with convenient installation and good use effect.

[0047] The working process of the above pyrolysis equipment is as follows:

[0048] During the operation of the reactor 1, when there is axial or radial linear expansion due to heat, under the action of the main supporting wheel body 202 and the auxiliary supporting wheel body 203, the corresponding movement of the reactor 1 is realized without causing damage to the reactor 1 due to hard friction.

[0049] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0050] The embodiments described above only represent several implementation manners of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A pyrolysis device, comprising a reaction kettle, and a supporting wheel traveling device that supports the reaction kettle and moves along the axial direction of the reaction kettle together with the reaction kettle when the reaction kettle expands due to heat, characterized in that, The said supporting wheel traveling device includes: A stop ring which is sleeved outside the reactor; Two sets of supporting wheel assemblies which are arranged on both sides of the bottom of the reactor in a left-right opposite manner. The supporting wheel assembly includes: A main supporting wheel body, the outer side surface of which is cylindrical and is in concave-convex connection with the stop ring. The central axis of the main supporting wheel body is parallel to the central axis of the reactor, and the vertical offset angle of the main supporting wheel body relative to the reactor is 35 - 38°; An auxiliary supporting wheel body which is located above the main supporting wheel body. The outer side surface of the auxiliary supporting wheel body is cylindrical and is in concave-convex connection with the stop ring. The central axis of the auxiliary supporting wheel body is parallel to the central axis of the reactor, and the vertical offset angle of the auxiliary supporting wheel body relative to the reactor is 60 - 63°.

2. The pyrolysis equipment according to claim 1, wherein The said supporting wheel assembly further includes: A main supporting wheel body fixing part which includes a main supporting wheel bracket, and the main supporting wheel body is mounted on the main supporting wheel bracket through a bearing; An auxiliary supporting wheel body fixing part which includes an auxiliary supporting wheel bracket, and the auxiliary supporting wheel body is mounted on the auxiliary supporting wheel bracket through a bearing; An installation base which fixedly connects the main supporting wheel bracket and the auxiliary supporting wheel bracket; The said supporting wheel traveling device further includes a supporting wheel traveling assembly located below the installation base. When the reactor expands due to heat along the hot line, the supporting wheel traveling assembly drives the supporting wheel assembly and the reactor to move axially along the reactor.

3. The pyrolysis device according to claim 2, wherein The said supporting wheel traveling device further includes cylinders arranged outside the installation base. The cylinders on the left and right sides of the reactor are arranged oppositely; when a gap is generated between the stop ring and the main supporting wheel body or between the stop ring and the auxiliary supporting wheel body, the cylinders on the left and right sides drive the installation bases on the left and right sides of the reactor to move towards each other and clamp the reactor.

4. The pyrolysis equipment according to claim 1, characterized in that, The stop ring is a convex structure, and grooves matching the convex structure are provided circumferentially on the main supporting wheel body and the auxiliary supporting wheel body.

5. The pyrolysis equipment according to claim 1, wherein, The said supporting wheel traveling device further includes a lifting part located directly below the reactor.

6. The pyrolysis equipment according to claim 1, characterized in that, There are at least two sets of the said supporting wheel traveling devices, one set is arranged at the front end of the reactor, and one set is arranged at the rear end of the reactor.

7. The pyrolysis device according to claim 6, characterized in that, The said supporting wheel traveling device further includes a limiter located at the rear end of the reactor, and the limiter is used to limit the movement of the supporting wheel assembly located at the rear end of the reactor.

8. The pyrolysis equipment according to claim 1, characterized in that, It further includes a heating box body sleeved outside the middle part of the reactor. The inner diameter of the reactor located inside the heating box body is larger than the inner diameter of the reactor at both ends outside the heating box body; the supporting wheel traveling device is connected to the reactor at both ends outside the heating box body.

9. The pyrolysis equipment according to claim 1, wherein, It further includes a feed bin connected to the feed inlet of the reactor, a metering belt conveyor connected to the feed inlet of the feed bin, and a buffer feed bin connected to the feed inlet of the metering belt conveyor.

10. The pyrolysis device according to claim 1, characterized in that, It further includes a rear seal bin connected to the discharge outlet of the reactor, and a screw slag discharger connected to the discharge outlet of the rear seal bin.

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