Continuous microwave rubber cracking furnace

Abstract

The utility model discloses a continuous microwave rubber cracking furnace, which belongs to the technical field of microwave heating cracking and comprises a cracking furnace body, an air inlet is arranged at the upper end of the cracking furnace body, a rubber block inlet and a microwave generator are arranged on the side wall of the cracking furnace body, a turntable mechanism is rotatably arranged at the middle lower end in the cracking furnace body, and a through hole is arranged on the turntable mechanism. The side wall of the cracking furnace body at the upper end of the turntable mechanism is provided with a carbon black outlet, and the side wall of the cracking furnace body at the lower end of the turntable mechanism is provided with a gas outlet. Rubber is fed into the cracking furnace body through the rubber block inlet, hot air enters the cracking furnace body through the air inlet, the rubber is heated and cracked under the action of the microwave generator, the rubber is heated more uniformly through the arrangement of the rotary disc mechanism, and the cracking effect is better; the cracked carbon black is discharged through a carbon black outlet; the device can be used for continuous production.

Description

Technical Field

[0001] This utility model belongs to the field of microwave heating pyrolysis technology, specifically relating to a continuous microwave rubber pyrolysis furnace. Background Technology

[0002] For a long time, the technology for recycling and reusing waste rubber or tires has been a global challenge. Currently, billions of tires are scrapped worldwide each year. my country's annual tire production exceeds 100 million, ranking third in the world. However, the amount of waste tires generated annually reaches over 50 million, weighing more than 1.4 million tons. Large quantities of waste tires are discarded, dumped in the open, or landfilled. With the increasing number of cars in households and the growing number of vehicles, the production of waste tires is entering a phase of rapid growth. How to effectively recycle and reuse tires, preventing direct and secondary pollution to the environment, is also an urgent problem that needs to be solved in my country's waste resource recycling industry.

[0003] Rubber tires are high-molecular-weight hydrocarbon polymers, formed by the polymerization of hydroxyl groups from petroleum products. They are typically recycled using pyrolysis technology, which involves heating the tires in the presence of a catalyst to cause them to decompose. The pyrolysis temperature can reach up to 750℃, and the process consumes a large amount of heat energy. Traditional incineration and pyrolysis are oxidation and high-temperature processes, which cannot uniformly control the "reverse polymerization" process and are accompanied by secondary environmental pollution. Furthermore, pyrolysis technology, as a method for treating waste tires, suffers from a complex process. It often requires first removing the ring-shaped steel wires from the waste tires, then cutting the tires into pieces before feeding them into a pyrolysis furnace or tower for thermal pyrolysis. This process involves many steps, a long production cycle, and low overall efficiency.

[0004] Microwave pyrolysis technology is a relatively new pyrolysis technology that has developed in recent years. It typically uses microwave energy to break chemical bonds and open up the macromolecular chains of high-molecular polymers in an inert nitrogen gas environment at 150–350°C, followed by separation to obtain liquid oil, fuel gas, and carbon black. The inert nitrogen environment avoids the oxidation process of organic matter and prevents the formation of toxic substances such as furans. This control over the pyrolysis environment greatly improves the stability and quality of various recycled products, especially carbon black. Therefore, microwave pyrolysis of tires has significant advantages over thermal pyrolysis.

[0005] Currently, some patents have been reported both domestically and internationally regarding tire microwave pyrolysis equipment and technologies; however, they all suffer from the following shortcomings: low processing efficiency of microwave pyrolysis devices, difficulty in process control, long pyrolysis cycle, and the need to improve pyrolysis effect.

[0006] Chinese patent CN203360384U, published on December 25, 2013, discloses a disc-type microwave continuous pyrolysis device, including a feeding assembly, a microwave pyrolysis assembly, a discharging assembly, and a control assembly, which are connected in sequence. The microwave pyrolysis assembly includes a microwave generator, a non-metallic sealing plate, a pyrolysis chamber, a rotating disc, and a disc drive motor. The non-metallic sealing plate divides the pyrolysis chamber into upper and lower parts. The rotating disc is located in the lower part of the pyrolysis chamber and is driven to rotate by the disc drive motor. The microwave generator is arranged on a circular flange on the top of the pyrolysis chamber. This patent has the disadvantage of complex structure. Utility Model Content

[0007] The purpose of this invention is to solve the problems of the prior art and provide a continuous microwave rubber pyrolysis furnace. Rubber is fed into the pyrolysis furnace body through the rubber block inlet, and hot air enters the pyrolysis furnace body through the air inlet. The rubber is heated and pyrolyzed by the action of the microwave generator. The turntable mechanism makes the rubber more evenly heated, resulting in better pyrolysis effect. The pyrolyzed carbon black is discharged through the carbon black outlet. This invention enables continuous production.

[0008] This utility model is achieved through the following technical solution:

[0009] A continuous microwave rubber pyrolysis furnace includes a pyrolysis furnace body. An air inlet is provided at the upper end of the pyrolysis furnace body. A rubber block inlet and a microwave generator are provided on the side wall of the pyrolysis furnace body. A turntable mechanism is rotatably provided at the middle and lower end inside the pyrolysis furnace body. The turntable mechanism is provided with a through hole. A carbon black outlet is provided on the side wall of the pyrolysis furnace body at the upper end of the turntable mechanism. An air outlet is provided on the side wall of the pyrolysis furnace body at the lower end of the turntable mechanism.

[0010] Preferably, the turntable mechanism includes a turntable body, and a rotating shaft is provided at the lower end of the turntable body. The lower end of the rotating shaft is connected to the output end of the turntable motor.

[0011] Preferably, a pulley is provided at the lower end of the rotating shaft, and the pulley is connected to the output end of the turntable motor via a belt.

[0012] Preferably, the upper end of the pyrolysis furnace body is open, and an air inlet hood is provided at the opening. An air inlet is provided at the end of the air inlet hood away from the pyrolysis furnace body.

[0013] Preferably, an air distribution plate is provided at the opening, and ventilation holes are provided on the air distribution plate.

[0014] Preferably, the ventilation holes are evenly distributed on the air distribution plate.

[0015] Preferably, the thickness of the air distribution plate is 5-50mm.

[0016] Preferably, the diameter of the ventilation hole is less than 55.80 mm.

[0017] Preferably, the frequency of the microwave generator is 915MHz or 2450MHz.

[0018] Preferably, the microwave generator is provided with one or more sets.

[0019] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0020] I. This utility model provides a continuous microwave rubber pyrolysis furnace. Rubber is fed into the pyrolysis furnace body through the rubber block inlet, and hot air enters the pyrolysis furnace body through the air inlet. The rubber is heated and pyrolyzed by the action of the microwave generator. The turntable mechanism makes the rubber more evenly heated, resulting in better pyrolysis effect. The pyrolyzed carbon black is discharged through the carbon black outlet, and the pyrolysis gas is discharged through the air outlet. This utility model can produce continuously.

[0021] II. The continuous microwave rubber pyrolysis furnace provided by this utility model has a uniform air distribution plate thickness and ventilation hole diameter that are matched with the frequency of the microwave generator, so that microwaves can be isolated and ventilation can be provided. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] The components are: 1. Pyrolysis furnace body; 2. Air inlet; 3. Gel block inlet; 4. Microwave generator; 5. Turntable mechanism; 51. Turntable body; 52. Rotating shaft; 6. Through hole; 7. Carbon black outlet; 8. Air outlet; 9. Air inlet hood; 10. Air distribution plate; 11. Ventilation hole. Detailed Implementation

[0024] The present invention will be further described in detail below with reference to the embodiments, but the implementation of the present invention is not limited thereto.

[0025] Example 1

[0026] like Figure 1 As shown, this embodiment provides a continuous microwave rubber pyrolysis furnace, including a pyrolysis furnace body 1. The upper end of the pyrolysis furnace body 1 is provided with an air inlet 2. The side wall of the pyrolysis furnace body 1 is provided with a rubber block inlet 3 and a microwave generator 4. The middle and lower end of the pyrolysis furnace body 1 is rotatably provided with a turntable mechanism 5. The turntable mechanism 5 is provided with a through hole 6. The side wall of the pyrolysis furnace body 1 at the upper end of the turntable mechanism 5 is provided with a carbon black outlet 7. The pyrolysis furnace body 1 at the lower end of the turntable mechanism 5 is provided with an air outlet 8.

[0027] Example 2

[0028] This embodiment provides a continuous microwave rubber pyrolysis furnace, including a pyrolysis furnace body 1. The upper end of the pyrolysis furnace body 1 is provided with an air inlet 2. The side wall of the pyrolysis furnace body 1 is provided with a rubber block inlet 3 and a microwave generator 4. The middle and lower end of the pyrolysis furnace body 1 is rotatably provided with a turntable mechanism 5. The turntable mechanism 5 is provided with a through hole 6. The side wall of the pyrolysis furnace body 1 at the upper end of the turntable mechanism 5 is provided with a carbon black outlet 7. The pyrolysis furnace body 1 at the lower end of the turntable mechanism 5 is provided with an air outlet 8.

[0029] The turntable mechanism 5 includes a turntable body 51, and a rotating shaft 52 is provided at the lower end of the turntable body 51. The lower end of the rotating shaft 52 is connected to the output end of the turntable motor.

[0030] The lower end of the rotating shaft 52 is provided with a pulley, which is connected to the output end of the turntable motor via a belt.

[0031] The pyrolysis furnace body 1 has an opening at the upper end, and an air inlet hood 9 is provided at the opening. An air inlet 2 is provided at the end of the air inlet hood 9 away from the pyrolysis furnace body 1.

[0032] The opening is provided with an air distribution plate 10, and the air distribution plate 10 is provided with ventilation holes 11.

[0033] Preferably, the ventilation holes 11 are evenly distributed on the air distribution plate 10.

[0034] The thickness of the air distribution plate 10 is 5-50mm.

[0035] The diameter of the ventilation hole 11 is less than 55.80 mm.

[0036] The microwave generator 4 has a frequency of 915MHz or 2450MHz.

[0037] The microwave generator 4 is provided with one or more sets.

[0038] Compared with the prior art, this utility model has the following advantages and beneficial effects:

[0039] I. This utility model provides a continuous microwave rubber pyrolysis furnace. Rubber is fed into the pyrolysis furnace body 1 through the rubber block inlet 3. Hot air enters the pyrolysis furnace body 1 through the air inlet 2. The rubber is heated and pyrolyzed by the microwave generator 4. The turntable mechanism 5 makes the rubber more evenly heated, resulting in better pyrolysis effect. The pyrolyzed carbon black is discharged through the carbon black outlet 7, and the pyrolysis gas is discharged through the air outlet 8. This utility model can produce continuously.

[0040] II. The continuous microwave rubber pyrolysis furnace provided by this utility model has a thickness of the air distribution plate 10 and a hole diameter of the ventilation hole 11 that are matched with the frequency of the microwave generator 4, so that microwaves can be isolated and ventilation can be provided.

[0041] Example 3

[0042] In this embodiment, the thickness of the air distribution plate 10 and the aperture of the ventilation hole 11 are matched with the frequency of the microwave generator 4, as shown in the table below.

[0043]

[0044] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications or equivalent changes made to the above embodiments based on the technical essence of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A continuous microwave rubber pyrolysis furnace characterized by: The application relates to a pyrolysis furnace body (1) provided with an air inlet (2) at the upper end, rubber block inlets (3) and microwave generators (4) arranged on the side walls of the pyrolysis furnace body (1), a rotating disc mechanism (5) arranged at the middle and lower ends of the pyrolysis furnace body (1), a through hole (6) arranged on the rotating disc mechanism (5), a carbon black outlet (7) arranged on the side wall of the pyrolysis furnace body (1) at the upper end of the rotating disc mechanism (5), and an air outlet (8) arranged on the pyrolysis furnace body (1) at the lower end of the rotating disc mechanism (5).

2. A continuous microwave rubber pyrolysis furnace according to claim 1, characterized in that: The rotating disc mechanism (5) comprises a rotating disc body (51) provided with a rotating shaft (52) at the lower end, and the lower end of the rotating shaft (52) is connected with the output end of a rotating disc motor.

3. A continuous microwave rubber pyrolysis furnace according to claim 2, characterized in that: The lower end of the rotating shaft (52) is provided with a belt pulley connected with the output end of the rotating disc motor through a belt.

4. A continuous microwave rubber pyrolysis furnace according to claim 3, characterized in that: The upper end of the pyrolysis furnace body (1) is open, and an air inlet cover (9) is arranged at the opening, and the air inlet cover (9) is provided with the air inlet (2) away from the pyrolysis furnace body (1).

5. A continuous microwave rubber pyrolysis furnace according to claim 4, characterized in that: An air distribution plate (10) is arranged at the opening, and the air distribution plate (10) is provided with air holes (11).

6. A continuous microwave rubber pyrolysis furnace according to claim 5, characterized in that: The air holes (11) are uniformly arranged on the air distribution plate (10).

7. A continuous microwave rubber pyrolysis furnace according to claim 6, characterized in that: The thickness of the air distribution plate (10) is 5-50 mm.

8. A continuous microwave rubber pyrolysis furnace according to claim 7, characterized in that: The diameter of the air holes (11) is less than 55.80 mm.

9. A continuous microwave rubber pyrolysis furnace according to claim 8, characterized in that: The frequency of the microwave generator (4) is 915 MHz or 2450 MHz.

10. A continuous microwave rubber pyrolysis furnace according to claim 9, characterized in that: The microwave generator (4) is provided with one or more groups.

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