Rotatable backfire heating device suitable for waste tire cracking

Abstract

The utility model discloses a rotatable backfire heating device suitable for waste tire cracking, and belongs to the technical field of environmental protection. The device mainly comprises a rotary rotating structure, a straight tube section, a combustor, a main tempering flue, a main flue, an upper collecting box, a lower collecting box, a tail end tempering flue, a collecting flue, a support and an external connection flue. According to the rotatable backfire heating device suitable for cracking of the waste tires, the heat transfer area is greatly increased, the heat radiation efficiency is improved, meanwhile, the effective contact area of the rotating backfire flue and the tires can be greatly increased, the fully-cracked parts on the surfaces of the tires are broken and stripped by the rotating backfire flue along with cracking, and the cracking efficiency is improved. The structure is simple and reasonable, easy to implement, low in cost and beneficial to wide popularization and application.

Description

TECHNICAL FIELD

[0001] The utility model relates to a rotatable backfire heating device, especially to a rotatable backfire heating device suitable for waste tire cracking belongs to environmental protection technical field. BACKGROUND

[0002] Waste tire pyrolysis technology originated in the 1980s, and Kaminsky et al. is considered to be the pioneer of the research on waste tire pyrolysis technology. Their team proved that it is feasible to use pyrolysis technology to treat waste tires to obtain pyrolysis products with high added value. Since then, a large number of scholars have carried out extensive research on waste tire pyrolysis technology, and the main research direction is focused on the modification and upgrading of pyrolysis products. High-value pyrolysis products are obtained through co-pyrolysis, catalytic pyrolysis and other methods.

[0003] Waste tire pyrolysis products mainly include pyrolysis carbon black, pyrolysis oil and pyrolysis gas. Among them, pyrolysis carbon black can be used for tire manufacturing, and pyrolysis oil can be used for preparing fuel oil and chemical products, both of which have high recycling value. The main components of pyrolysis gas are hydrogen, methane and other high-calorie small molecule gases, which are often used as fuel energy.

[0004] The Chinese utility model patent with the application number 2023225002034 and the name "a vertical rotary cracking reaction device suitable for waste tires" discloses a vertical rotary cracking reaction device suitable for waste tires. In this device, the heating method uses intermediate rotary heating, and the flue gas from the inner cylinder is discharged from the upper end. The high-temperature flue gas has a short residence time and a high heat loss, so the effective use of heat is a problem that needs to be solved.

[0005] The Chinese utility model patent with the publication number CN202281218U discloses a boiler, specifically a secondary combustion backfire boiler, which solves the problems of incomplete combustion and high emission of harmful substances in the prior art, and the temperature of flue gas discharge is high. The boiler includes a furnace tray seat above the combustion chamber, a combustion cap below the water-cooled base and the combustion chamber surrounded by the water-cooled wall, air enters through the variable-section upper air distributor and is sprayed out from the small holes on the combustion cap through the air inlet channel, and mixes with the combustible gas generated in the combustion chamber. Since the air intake of the combustion chamber is controlled by the lower air distributor, the ratio of combustible gas to air in the combustion cap can be adjusted to achieve optimal combustion. The high-temperature flue gas after combustion passes through the backfire channel, and the flue gas flow is lengthened to improve heat energy utilization. It meets the concept of energy saving and environmental protection.

[0006] The utility model discloses a kind of energy-saving boiler with return fire ring, which is disclosed in Chinese utility model patent No. CN201093716Y, named "Energy-saving boiler with return fire ring". It can be used for burning coal, firewood, gas and oil. It relates to a boiler with flue gas circulating in the furnace. In the existing boiler with return fire device, the escaping flue gas still has a high temperature, causing resource waste. To solve this problem, the utility model provides a boiler, which includes a boiler, a furnace inside the boiler, a chimney outlet below the boiler, a return fire ring inside the furnace, a chimney installed at the chimney outlet of the return fire ring, a water jacket installed in the lower part of the chimney, a water inlet pipe installed at the lower end of the water jacket, the water jacket water inlet pipe being in communication with a water supply tank, a water outlet pipe installed at the upper end of the water jacket, the water jacket water outlet pipe being in communication with the lower end of the boiler, and a water outlet at the upper end of the boiler. When the energy-saving boiler with return fire is in use, the heat in the flue gas is conducted into the water jacket when the flue gas flows through the middle part of the chimney, and the exhaust gas waste heat is fully utilized.

[0007] Chinese utility model patent No. CN2705751Y discloses a three-return flue pipe type coal stove. The stove body 1 is fixedly connected with the base 2. The base has an air door 3. The grate 4 is movably connected with the base 2. The pusher 5 is fixedly connected with one side of the stove body. The stove body near the pusher has a coal feeding port 6. The other side of the stove body has a slag outlet 7. The inside of the stove body has a water jacket 8. The smoke box 9 is fixedly connected with one side of the top of the stove body. The smoke outlet 10 is fixedly connected with the other side of the top of the stove body. The smoke pipe 11 is fixedly connected with the upper part of the combustion chamber in the stove body. The utility model patent has the advantages of novel structure, convenience in production and use, and high heat utilization rate. The hot flue gas in the combustion chamber is discharged after being folded back through the smoke pipe and the smoke box, which increases the heating area of the stove and solves the problem of smoke pollution, which is beneficial to environmental protection.

[0008] The above-mentioned methods are all return fire devices for boilers, which simply fold back the flue. The heat transfer area is not enough, and the heat radiation efficiency needs to be further improved. This method cannot meet the contact area requirement of high-temperature flue gas and tires for tire cracking. A new structure is needed to further increase the contact area in order to improve the cracking efficiency of tires. Therefore, a heating device suitable for vertical rotating tire cracking has become a technical problem urgently to be solved in the technical field.

[0009] Therefore, a rotatable return fire heating device suitable for waste tire cracking is provided. The heat transfer area is greatly increased, and the heat radiation efficiency is improved. At the same time, the effective contact area of the rotating return flue with the tire is greatly increased. With the progress of cracking, the cracked and fully peeled parts on the surface of the tire are broken and peeled off by the rotating return flue. The structure is simple and reasonable, easy to implement, low in cost, and beneficial to widespread application. SUMMARY

[0010] The utility model discloses a purpose lies in providing a kind of rotatable fireback heating device suitable for waste tyre cracking, heat transfer area is greatly increased, thermal radiation efficiency is promoted, while rotating fireback can be effectively contacted with tyre greatly increased area, with the cracking of progress, tyre surface cracking sufficient part is broken and peeled by rotating fireback, and the structure is simple and reasonable, easy to realize, low in cost, and conducive to widely popularization and application.

[0011] To achieve the above object, the technical scheme provided by the utility model is:

[0012] A rotatable fireback heating device suitable for waste tyre cracking, characterized in that: main rotary structure, straight cylinder section, burner, main fireback, main flue, upper header, lower header, end fireback, collection flue, support, outer connection flue; the lower end of the straight cylinder section is connected with the rotary structure, the upper end of the straight cylinder section is connected with the main flue, the burner is arranged at the bottom of the main flue, the lower end of the main fireback is connected with the lower header, the upper end of the main fireback is connected with the upper header, the lower end of the main flue is connected with the lower header, the upper end of the main flue is connected with the upper header, the lower header is connected with the end fireback, the upper end of the end fireback is connected with the collection flue, the collection flue extends to the outside through the middle gap of the support, and the lower end of the collection flue is connected with the outer connection flue.

[0013] Preferably, a motor and a speed reducer are further included, the motor is connected with the speed reducer, and the speed reducer is connected with the rotary structure.

[0014] Preferably, the rotary structure is a gear transmission.

[0015] Preferably, the rotary structure includes a driving wheel, a driven wheel, a rotary upper cover and a rotary lower cover, wherein the speed reducer is connected with the driving wheel in the rotary structure, 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 fireback to rotate, and the rotary upper cover, the driven wheel and the rotary lower cover are connected in sequence; and the rotary upper cover is connected with the lower end of the straight cylinder section.

[0016] Preferably, the main fireback is two, four, six or eight, and is evenly distributed along a central circle.

[0017] Preferably, the main flue is welded with the straight cylinder section, and the straight cylinder section is welded with the rotary upper cover.

[0018] Preferably, the rotary upper cover is bolted with the driven wheel, and the driven wheel is bolted with the rotary lower cover.

[0019] Preferably, the rotary lower cover is welded with the support.

[0020] Preferably, the upper header is arranged at the upper end of the main flue for distributing the main annealing flue and buffering the stress caused by flue distribution.

[0021] Preferably, the lower header is arranged at the lower end of the main flue for collecting the main annealing flue and buffering the stress caused by flue collection.

[0022] Preferably, the connection between the collecting flue and the outer connecting flue is a packing seal structure.

[0023] Beneficial effects:

[0024] The rotatable annealing heating device for waste tire cracking has a greatly increased heat transfer area and improved heat radiation efficiency, and the rotating annealing flue can greatly increase the effective contact area with the tire. With the cracking, the tire surface cracking sufficient part is broken and peeled off by the rotating annealing flue. The structure is simple and reasonable, easy to realize, low in cost, and beneficial to wide application and promotion.

[0025] The utility model is further described below by the drawings and specific embodiments, but does not mean the limitation of the protection scope of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the cross section structure schematic drawing of the rotatable annealing heating device for waste tire cracking of the utility model embodiment 1.

[0027] Figure 2 It is the partial structure enlarged schematic drawing of the flue in the rotatable annealing heating device for waste tire cracking of the utility model embodiment 1.

[0028] Figure 3-1 It is the cross section structure schematic drawing of the rotary rotation structure in the rotatable annealing heating device for waste tire cracking of the utility model embodiment 1.

[0029] Figure 3-2 It is the overhead structure schematic drawing of the driving wheel and driven wheel in the rotary rotation structure in the rotatable annealing heating device for waste tire cracking of the utility model embodiment 1.

[0030] MAIN REFERENCE NUMERALS EXPLANATION:

[0031] 1 motor 2 speed reducer

[0032] 3 rotary rotation structure 3-1 driving wheel

[0033] 3-2 driven wheel 3-3 rotary upper cover

[0034] 3-4 rotary lower cover 4 straight cylinder section

[0035] 5 burner 6 main annealing flue

[0036] 6-1 first main tempering flue 6-2 second main tempering flue

[0037] 6-3 third main tempering flue 6-4 fourth main tempering flue

[0038] 6-5 fifth main tempering flue 6-6 sixth main tempering flue

[0039] 7 main flue 7-1 lower end of main flue

[0040] 7-2 upper end of main flue 8 upper header

[0041] 9 lower header 10 end tempering flue

[0042] 11 collecting flue 12 support

[0043] 13 outer connecting flue DETAILED DESCRIPTION

[0044] Unless otherwise specified, in the embodiments of the present application, the parts used are all conventional parts available in the market, the connections between the parts are all conventional connections, and the units are weight units.

[0045] Embodiment 1

[0046] As shown in FIG. 1, it is a cross-sectional structure schematic view of the rotatable tempering heating device suitable for waste tire cracking according to the first embodiment of the present application; as shown in FIG. 2, it is a local structure enlarged schematic view of the flue in the rotatable tempering heating device suitable for waste tire cracking according to the first embodiment of the present application; as shown in FIG. 3, it is a cross-sectional structure schematic view of the rotary rotating structure in the rotatable tempering heating device suitable for waste tire cracking according to the first embodiment of the present application; as shown in FIG. 4, it is a cross-sectional structure schematic view of the rotary rotating structure in the rotatable tempering heating device suitable for waste tire cracking according to the first embodiment of the present application. Figure 1 Figure 2 Figure 3-1 Figure 3-2 ​​​As shown, it is the overhead structure schematic diagram of the driving wheel and the driven wheel in the rotary rotation structure of the rotatable backfire heating device suitable for waste tire cracking of the utility model embodiment 1, wherein, 1 is motor, 2 is speed reducer, 3 is rotary rotation structure, 3-1 is driving wheel, 3-2 is driven wheel, 3-3 is rotary upper cover, 3-4 is rotary lower cover, 4 is straight cylinder section, 5 is burner, 6 is main backfire flue, 6-1 is first main backfire flue, 6-2 is second main backfire flue, 6-3 is third main backfire flue, 6-4 is fourth main backfire flue, 6-5 is fifth main backfire flue, 6-6 is sixth main backfire flue, 7 is main flue, 7-1 is main flue lower end, 7-2 is main flue upper end, 8 is upper header, 9 is lower header, 10 is end backfire flue, 11 is collection flue, 12 is support, 13 is outer connection flue;The rotatable backfire heating device suitable for waste tire cracking of the utility model embodiment 1 includes motor 1, speed reducer 2, rotary rotation structure 3, straight cylinder section 4, burner 5, main backfire flue 6, main flue 7, upper header 8, lower header 9, end backfire flue 10, collection flue 11, support 12, outer connection flue 13;Motor 1 is connected with speed reducer 2, speed reducer 2 is connected with rotary rotation structure 3 (in driving wheel 3-1), rotary upper cover 3-3 in rotary rotation structure 3 is connected with the lower end of straight cylinder section 4, the upper end of straight cylinder section 4 is connected with main flue 7, burner 5 is arranged at the bottom of main flue 7, the lower end of main backfire flue 6 is connected with lower header 9, the upper end of main backfire flue 6 is connected with upper header 8, the lower end (main flue lower end 7-1) of main flue 7 is connected with lower header 9, the upper end (main flue upper end 7-2) of main flue 7 is connected with upper header 8, lower header 9 is connected with end backfire flue 10, end backfire flue 10 is connected with the upper end of collection flue 11, collection flue 11 extends to the outside through the intermediate gap of support 12, the lower end of collection flue 11 is connected with outer connection flue 13;

[0047] Rotary rotation structure 3 includes driving wheel 3-1, driven wheel 3-2, rotary upper cover 3-3, rotary lower cover 3-4, wherein, speed reducer 2 is connected with driving wheel 3-1 in rotary rotation structure 3, speed reducer 2 drives driving wheel 3-1 to rotate, driving wheel 3-1 drives driven wheel 3-2 to rotate through gear, driven wheel 3-2 drives main backfire flue 6 to rotate, rotary upper cover 3-3, driven wheel 3-2 and rotary lower cover 3-4 are sequentially connected;

[0048] Main backfire flue 6 includes first main backfire flue 6-1, second main backfire flue 6-2, third main backfire flue 6-3, fourth main backfire flue 6-4, fifth main backfire flue 6-5, sixth main backfire flue 6-6;

[0049] Main flue 7 includes main flue lower end 7-1 and main flue upper end 7-2;

[0050] The upper header 8 is arranged at the upper end of the main flue 7, and is used for distributing the main tempering flue 6 and buffering the stress caused by flue distribution;

[0051] The lower header 9 is arranged at the lower end of the main flue 7, and is used for collecting the main tempering flue 6 and buffering the stress caused by flue collection;

[0052] The connection between the collecting flue 11 and the outer connecting flue 13 is a packing seal structure.

[0053] The operation process of the rotatable tempering heating device suitable for waste tire cracking is as follows:

[0054] The rotary rotating mechanism 3 is debugged, the flow of the cracking gas or the natural gas is adjusted, the cracking gas or the natural gas enters the burner 5, ignition is performed, high-temperature flue gas is generated, the high-temperature flue gas passes through the main flue 7, the upper header 8, the main tempering flue 6, the lower header 9, the lower end tempering flue 10, enters the collecting flue 11, and then enters the subsequent flue gas treatment equipment through the outer connecting flue 13;

[0055] The main flue 7 is welded with the straight cylinder section 4, the straight cylinder section 4 is welded with the rotary upper cover 3-3, the rotary upper cover 3-3 is bolted with the driven wheel 3-2, the driven wheel 3-2 is bolted with the rotary lower cover 3-4, and the rotary lower cover 3-4 is welded with the support 12, so that the main flue 7, the straight cylinder section 4, the rotary upper cover 3-3 and the driven wheel 3-2 form a rotating shaft body, rely on the rotary lower cover 3-4 and the support 12, and stably run at a uniform speed under the drive of the gear, and the rotating speed can be 4 r / h, 6 r / h, 8 r / h or 10 r / h, and is adjusted according to the tire cracking amount.

[0056] The rotatable tempering heating device suitable for waste tire cracking has the beneficial effects that the main flue and the tempering flue increase the heat transfer surface area and improve the heat radiation efficiency, meanwhile, the rotating tempering flue can effectively contact the tire, and with the cracking, the tire surface cracking sufficient part is broken and peeled off by the tempering flue.

[0057] The above merely describes the preferred specific implementation manner of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can cover the protection scope of the utility model according to the technical scheme and the utility model concept of the utility model or equivalent substitution or change within the technical range disclosed by the utility model.

Claims

1. A rotatable fireback heating device suitable for use in the pyrolysis of scrap tyres, characterised in that: The main rotary structure, the straight cylinder section, the burner, the main backfire flue, the main flue, the upper header, the lower header, the end backfire flue, the collection flue, the support, and the outer connection flue are connected in sequence.

2. The rotatable fireback heating device suitable for scrap tire pyrolysis according to claim 1, wherein: The rotatable backfire heating device for waste tire cracking further comprises a motor and a speed reducer.

3. The rotary fire -back heating device suitable for scrap tire pyrolysis according to claim 2, characterized in that: The rotary structure is a gear transmission.

4. The rotary fire -back heating device suitable for scrap tire pyrolysis according to claim 3, characterized in that: The rotary structure comprises a driving wheel, a driven wheel, a rotary upper cover, and a rotary lower cover.

5. The rotary fire -back heating device suitable for scrap tire pyrolysis according to claim 4, wherein: The main backfire flue is two, four, six, or eight, and is evenly distributed along the center circle.

6. The rotatable fireback heating device suitable for use in the pyrolysis of scrap tires of claim 5, wherein: The main flue is welded to the straight cylinder section, and the straight cylinder section is welded to the rotary upper cover.

7. The rotatable fireback heating device suitable for use in the pyrolysis of scrap tires of claim 6, wherein: The rotary upper cover is bolted to the driven wheel, and the driven wheel is bolted to the rotary lower cover.

8. The rotatable fireback heating device suitable for use in the pyrolysis of scrap tires of claim 7, wherein: The upper header is arranged at the upper end of the main flue and is used for distributing the main backfire flue and buffering the stress caused by flue distribution.

9. The rotatable fireback heating device suitable for use in the pyrolysis of scrap tires of claim 8, wherein: The lower header is arranged at the lower end of the main flue and is used for collecting the main backfire flue and buffering the stress caused by flue collection.

10. The rotatable fireback heating device suitable for use in scrap tire pyrolysis of claim 9, wherein: The connection between the collection flue and the outer connection flue is a packing seal structure.

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