CN116613407A - A continuous and high-efficiency anaerobic cracking furnace for recycling waste lithium batteries - Google Patents

Abstract

The invention discloses a continuous and high-efficiency oxygen-free cracking furnace for recycling waste lithium batteries, which relates to the technical field of recycling waste lithium batteries, and includes a cracking box and a transmission box. There is a conveying and discharging mechanism; in the present invention, the rotation of the first motor drives the rotation of the rotating shaft, and the rotation of the rotating shaft drives the rotation of the reaction cover in the heating cover, so that the cracked material dropped from the feeding cylinder into the reaction cover can be cracked under the rotation of the reaction cover. Due to the rotation of the entire reaction hood, the contact between the material and the high temperature is more sufficient, the cracking effect of the material is improved, and the cracking rate is increased. At the same time, some materials are adhered to the inner wall of the reaction hood during the cracking process of the material, and the scraper fixed on the top of the entire feeding tube The plate can scrape off the material adhered to the inner wall of the reaction hood in time, avoiding the problem that the material adheres to the inner wall of the reaction hood and causes the overall efficiency of material cracking to decrease.

Description

A continuous and high-efficiency anaerobic cracking furnace for recycling waste lithium batteries

technical field

The invention relates to the technical field of recycling waste lithium batteries, in particular to a continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries.

Background technique

With the increasing use of lithium batteries, the internal working ions of lithium batteries will lose their activity after nearly thousands of charge and discharge cycles; the increasing use of lithium ions will inevitably bring a large number of waste batteries. A threat to the environment and a waste of resources;

Waste lithium battery recycling equipment can sort out copper, aluminum, positive and negative electrode powder and other valuable metals, which can relieve the scarce raw materials; usually a complete waste lithium battery recycling mainly includes a feeding and crushing system, (drying) The pyrolysis system, sorting system, and tail gas treatment system are composed of four parts. The main equipment of the anaerobic cracking system is an anaerobic cracking furnace. Its cracking temperature is usually between 250-600 degrees. Cracking, through the organic binders polyvinylpyrrolidone PVP, polyvinylidene fluoride PVDF, polyvinyl alcohol PVA, styrene-butadiene rubber SBR, etc. in the high-temperature positive plate, the larger polymer compounds are decomposed and transformed into low-temperature Small molecular compounds, due to anaerobic high-temperature pyrolysis, no dioxins are generated during the cracking process, and the production of nitrogen oxides is also suppressed under anaerobic conditions; usually the cracked materials enter the anaerobic Cracking in the cracking furnace. During the cracking process, the material is in a static state, resulting in a decrease in the overall cracking rate of the material. At the same time, part of the material sticks to the furnace wall during the cracking process, which affects the heat conduction of the cracking furnace and reduces the cracking efficiency of the material. The waste gas existing in the pyrolysis process is directly purified, resulting in the waste of part of the combustible gas;

To this end, we propose a continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries.

Contents of the invention

The object of the present invention is to provide a kind of continuous high-efficiency anaerobic pyrolysis furnace for waste lithium battery recycling, to solve the problems raised in the above-mentioned background technology:

1. The rotating shaft is driven by the rotation of the first motor, and the rotation of the rotating shaft drives the reaction cover in the heating cover to rotate, so that the whole material is cracked while moving and tumbling, avoiding the problem of low cracking rate of the material;

2. Through the rotation of the rotating shaft and the rotating sleeve, the second fan blade and the first fan blade in the air cavity and the cracking box are driven to rotate, so as to accelerate the flow rate of exhaust gas in the furnace body, and avoid the problem of low discharge rate during the material cracking process;

To achieve the above object, the present invention provides the following technical solutions:

A continuous and high-efficiency anaerobic cracking furnace for recycling waste lithium batteries, comprising a cracking box and a transmission box, one side of the cracking box is fixed with a transmission box by bolts, and a conveying and discharging mechanism is installed in the cracking box;

The conveying and discharging mechanism includes a heating mantle, an air chamber, a vent hole, an air guide pipe and a rotating plate. A heating mantle is installed in the cracking box, and an air chamber is provided in the heating mantle. One side of the air chamber is uniform. A ventilation hole is provided, and one side of the ventilation hole is connected with the heating cover, one side of the air cavity and the top of the heating cover is connected with an air guide tube, and the bottom inner wall of the heating cover is rotatably connected with a rotating plate;

The first motor is fixed by bolts in the transmission box, and the output end of the first motor is fixed with a rotating shaft by spot welding, and one end of the rotating shaft passes through one side of the cracking box, the air cavity and the heating mantle in sequence and is fixed by spot welding There is a reaction cover, the outer wall of the rotating shaft is movably connected with a rotating sleeve through a bearing sleeve, and one side of the rotating sleeve runs through the side of the cracking box and is movably connected with the heating cover through a bearing. The rotating shaft is located on the outer wall of the air cavity The second fan blade is sleeved and fixed, and the outer wall of the rotary sleeve located in the cracking box is sleeved and fixed with the first fan blade.

Further, the second motor is fixed by bolts in the transmission box, and the output end of the second motor is sleeved and fixed with a first disc, and the outer wall of one side of the transmission box is sleeved and fixed with a The second wheel, and the second wheel is connected to the first wheel through a belt, and the protective gas delivery device is fixed by bolts in the transmission box, and is located on one side of the protective gas delivery device and communicates with the cracking box.

Further, a feeding tube is installed on one side of the cracking box, and one side of the feeding tube runs through the cracking box and extends into the reaction cover, and a third motor is fixed on one side of the feeding tube by bolts, And the output end of the third motor runs through one side of the feeding tube and is fixed with a spiral blade by spot welding, and the outer wall of the feeding tube in the reaction hood is fixed with a scraper by spot welding, and the feeding tube is located in the pyrolyzer. Quantitative bins are installed on the top of the outside of the box.

Further, the top of the cracking box is fixed with a filter box by bolts, and a combustion furnace is installed on one side of the filter box, a gas storage box is installed in the combustion furnace, and the bottom of the gas storage box is evenly connected with copper A spark plug tube is evenly installed in the gas storage box, and one side of the spark plug tube extends into the copper tube. One end of the air guide tube runs through the top of the cracking box and communicates with one side of the filter box. The other side of the filter box is communicated with an exhaust pipe, and one end of the exhaust pipe passes through the combustion wheel and communicates with the gas storage box.

Further, an electric push rod is installed at the bottom of the cracking furnace, and one end of the electric push rod runs through the cracking furnace and is slidably connected with the rotating plate. The side is connected with an exhaust pipe, and a first filter plate is installed on the inner wall of the bottom of the transmission box, and a first ash hopper is installed on the bottom of the first filter plate. A second ash hopper is installed at the bottom of the second filter plate.

A continuous and efficient anaerobic cracking furnace working method for recycling waste lithium batteries:

Include the following steps:

S1: Feeding and cracking of the material, by adding the crushed material into the quantitative bin, and pushing the broken material into the reaction hood through the spiral blade in the feeding tube, the protective gas conveying device starts to work at this time, and the protective gas is ventilated into the entire cracking box, while the external vacuum device is running at the same time, before the protective gas is passed, the entire air guide pipe and discharge channel are in a sealed state;

After the supplement of protective gas in the cracking box is completed, the heating mantle starts to work, and the oxygen content in the cracking furnace is measured. When the oxygen content in the furnace body is less than about 5%, the heating mantle starts to heat, and the vacuum system is drawn during the heating process. Alternate operation with injection of inert gas, the temperature is controlled below 150°C, when the oxygen content in the furnace body reaches less than 2%, the temperature starts to rise above 300°C, at this time, the first motor is started, and the first motor drives the reaction hood in the heating hood through the rotating shaft Turn, and at the same time the airway begins to ventilate;

S2: Combustion of organic gas and emission of waste gas. Since the rotating shaft rotates and drives the second fan blade in the air chamber to rotate, the organic waste gas generated during the material cracking process enters the filter box along the air guide pipe and is initially filtered by the filter box. The final organic gas enters the combustion furnace to burn and heat the copper tube, and the waste gas generated enters the cracking box around the entire heating mantle. At this time, the entire second motor starts to work and drives the first fan blade to rotate. The material channel is opened, and the protective gas and exhaust gas are blown into the transmission box at the same time through the blowing of the first fan blade, and the exhaust gas mixed with the protective gas is discharged into the purification equipment through the exhaust pipe for processing;

S3: Discharge of pyrolysis residue. When the pyrolysis of the material in the entire reaction hood is completed, the first motor reverses at this time so that the guide leaf on the inner wall of the reaction hood rolls the pyrolysis residue to the bottom side of the heating hood. At this time, the electric push The rod drives the rotary plate to expand, and the cracked residue falls to the bottom of the transmission box. At this time, the exhaust pipe starts to blow air, blowing the cracked residue to the first filter plate and the second filter plate, and finally the cracked residue falls into the first filter plate. Ash hopper and second ash hopper.

Compared with prior art, the beneficial effect of the present invention is:

1. In the present invention, the rotation of the first motor drives the rotating shaft to rotate, and the rotation of the rotating shaft drives the reaction hood in the heating hood to rotate, so that the cracked material dropped from the feed tube into the reaction hood can be cracked under the rotation of the reaction hood. The rotation of the reaction hood makes the contact between the material and the high temperature more sufficient. While the cracking effect of the material is improved, the cracking rate is increased. At the same time, some materials stick to the inner wall of the reaction hood during the cracking process of the material, and the fixed scraper on the top of the entire feeding tube can Scrape off the adhered material on the inner wall of the reaction hood in time, avoiding the problem that the overall efficiency of material cracking is reduced due to the adhesion of the material to the inner wall of the reaction hood;

2. In the present invention, the second fan blade and the first fan blade in the air cavity and the cracking box are driven by the rotation of the rotating shaft and the rotating sleeve, and the rotation of the first fan blade makes the organic gas cracked in the heating mantle flow along the passage. The pores enter the filter box, and the organic gas filtered through the filter box is burned in the combustion furnace and heats the copper pipes around the entire feeding tube, which plays the role of assisting the pyrolysis of the material, while the remaining waste gas in the organic gas is Through the rotation of the first fan blade, it is quickly discharged from the exhaust pipe into the purification equipment for treatment, making the anaerobic cracking of the entire waste lithium battery more efficient.

Description of drawings

Fig. 1 is the continuous and efficient anaerobic cracking furnace structure schematic diagram of waste lithium battery recycling of the present invention;

Fig. 2 is the schematic cross-sectional structure schematic diagram of the front view of the continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries of the present invention;

Fig. 3 is the schematic diagram of gas flow in the continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries of the present invention;

4 is a schematic diagram of the connection structure between the first motor and the reaction cover of the present invention;

Fig. 5 is a schematic diagram of the overall structure of the filter box of the present invention;

Fig. 6 is a schematic cross-sectional structure schematic diagram of the front view of the combustion furnace of the present invention.

In the figure: 1. cracking box; 2. transmission box; 3. protective gas delivery device; 4. first motor; 5. second motor; 6. first wheel disc; 7. rotating shaft; 8. rotary sleeve; 10. The first fan blade; 11. The second fan blade; 12. The reaction cover; 13. The conveying and discharging mechanism; 131. The heating cover; 132. The air cavity; 133. The air hole; 134. The air duct ; 135, rotating plate; 14, the third motor; 15, feeding cylinder; 16, spiral blade; 17, scraper; 18, guide vane; 19, filter box; 20, exhaust pipe; 21, combustion furnace; 22. Gas storage box; 23. Copper tube; 24. Spark plug tube; 25. Electric push rod; 26. Discharging channel; 27. Waste gas pipe; 28. First filter plate; 29. First ash hopper; Two filter plates; 31, the second ash hopper; 32, quantitative warehouse.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

Referring to Fig. 1-6, the present invention provides a technical solution:

Example 1:

Usually, the light objects selected by the secondary wind are collected by the cyclone collector, and the plastic film materials left behind are discharged through closed air discharge, and the heavy objects left by the secondary air separation, positive and negative electrodes and plastics form a mixture The material is conveyed to the high-temperature anaerobic cracking furnace for cracking through extrusion and closed-air feeding. The high-temperature anaerobic cracking furnace is vacuumed and kept closed before adding materials. Internal cracking produces combustible gas. The combustible gas is cooled, filtered and purified, and then reused to heat the high-temperature anaerobic cracking furnace. The cracked mixture is conveyed to the screening equipment through cooling, extrusion and closed-air feeding, and the pure normal with small particle size is screened out. Negative electrode powder and copper-aluminum mixture with large particle size and doped with positive and negative electrode powder; during specific operation, the crushed material is added to the quantitative bin 32, and the third motor 14 drives the screw blade 16 in the feeding barrel 15 The scrap is pushed into the reaction hood 12, and now the protective gas conveying device 3 is working in the conveying and discharging mechanism 13, and the protective gas is passed into the whole cracking box 1, and the external vacuum device is simultaneously operated, and before the protective gas is passed, The whole air guide pipe 134 and the discharge channel 26 are in a sealed state. After the protective gas supplement in the cracking box 1 is completed, the heating mantle 131 starts to work, and the oxygen in the cracking furnace is measured. When the oxygen content in the furnace body is less than about 5% At this time, the heating mantle 131 starts to heat. During the heating process, the vacuum system is extracted and the inert gas is injected alternately. The temperature is controlled below 150 degrees. When the oxygen content in the furnace reaches less than 2%, the temperature starts to rise above 300 degrees. The first motor 4, the first motor 4 drives the reaction cover 12 in the heating cover 131 to rotate through the rotating shaft 7, and the air guide tube 134 starts to ventilate at the same time;

As shown in Figure 4, the side of the whole reaction cover 12 near the second fan blade 11 is in the cracking zone, and the inner wall of the reaction cover 12 in the cracking zone is not equipped with a guide vane 18, when the whole rotating shaft 7 drives the reaction cover 12 to rotate clockwise , the material is pyrolyzed in continuous rolling, so there is no reaction hood 12 where the bottom material cracking ends and the top layer material begins to crack, so that the rate of material cracking is greatly reduced. During the process, it will stick to the cover wall, causing the heat conduction efficiency of the whole reaction cover 12 to decrease, while the top of the feeding tube 15 and the cracking area of the reaction cover 12 are equipped with a scraper 17. The material on the 12 will be scooped off by the scraper 17, avoiding the increase of the thickness of the inner wall of the reaction hood 12, resulting in the problem of a decrease in the cracking rate of the material;

When the whole rotating shaft 7 rotates, it drives the second fan blade 11 in the air chamber 132 to rotate, and the rotating second fan blade 11 sends the organic waste gas produced by cracking the material into the air duct 134 through the vent hole 133, as shown in Figure 1 As shown, one end of the entire air duct 134 is connected to the filter box 19, and the filter plate in the entire filter box 19 will initially filter the organic waste gas to prevent the organic waste gas mixed with dust from entering the combustion furnace 21 for combustion, which is prone to dust explosion. The organic waste gas treated by the filter box 19 successfully enters the combustion furnace 21, as shown in Figure 6, the gas storage box 22 is installed in the entire combustion furnace 21, and the exhaust pipe 20 communicates with the gas storage box 22, and the organic waste gas first enters the In the gas storage box 22, the bottom of the gas storage box 22 is uniformly connected with a copper tube 23, and the entire copper tube 23 extends to the bottom of the heating cover 131, and surrounds the entire reaction cover 12 at the same time. After the organic waste gas enters the copper tube 23, the copper tube 23 The end of the spark plug tube 24 installed in the tube 23 is ignited, and the organic waste gas in the entire copper tube 23 is ignited, so that the surface temperature of the entire copper tube 23 rises, which plays a role in assisting the cracking of materials, while some of the gases in the organic waste gas that cannot be ignited Then it will enter the bottom of the cracking box 1, and wait for the material to be cracked and then discharged.

Example 2:

As shown in Figure 3, in order to discharge the exhaust gas after combustion into the pyrolysis box 1, the second motor 5 starts to work at this moment, and the second motor 5 is connected by the second wheel disc 9 belts on the first wheel disc 6 and the rotary sleeve 8 so that the second The second motor 5 drives the first fan blade 10 located in the cracking box 1 to rotate. At this time, the discharge channel 26 is opened, and the exhaust gas enters the bottom of the transmission box 2 along the discharge channel 26, and an exhaust gas pipe 27 is connected to one side of the transmission box 2. , the waste gas is successfully discharged into the purification equipment through the waste gas pipe 27;

Since the entire anaerobic cracking furnace is filled with protective gas, the remaining protective gas in the cracking box 1 can also be discharged through the waste gas pipe 27, preventing the staff from cutting the material after the first ash hopper 29 and the second ash hopper 31 are opened. If the protective gas leaks, after the waste gas in the whole cracking box 1 is exhausted, it is necessary to discharge the positive and negative electrode powder in the reaction hood 12 and the copper-aluminum mixture with larger particle size and mixed with positive and negative electrode powder. The electric push rod 25 at the bottom of the cover 131 drives the rotating plate 135 to unfold, and the first motor 4 drives the rotating shaft 7 to rotate in the reverse direction. At this time, part of the mixed material in the reaction cover 12 starts to contact with the guide vane 18 and is successfully rolled by the guide vane 18. Falling to the position of the rotating plate 135 at the bottom of the cracking box 1, the mixed material falls on the inner wall of the bottom of the transmission box 2 along the discharge channel 26. After the mixed material is successfully discharged into the bottom of the transmission box 2, the discharge channel 26 is closed, and the waste gas pipe 27 Start to blow the external air into the transmission box 2, and the air flow drives the mixed material to move on the bottom inner wall of the transmission box 2, and as shown in Figure 2, the entire bottom inner wall of the transmission box 2 is sequentially installed with the first filter plate from left to right 28 and the second filter plate 30, and the aperture of the first filter plate 28 is larger than that of the second filter plate 30, so that the mixed material is filtered and screened at the bottom of the transmission box 2, and the bottom of the first filter plate 28 is equipped with a first ash hopper 29. Materials with smaller particles such as positive and negative electrode powders successfully fall into the first ash hopper 29, while materials with larger particles such as copper-aluminum mixture cannot pass through the first filter plate 28 and the second filter plate 30 and are discharged from the transmission box 2 The bottom of the transmission box 2 is discharged from the bottom, and the filter plate installed at the bottom of the entire transmission box 2 plays the role of preliminary filtration and extraction, so that the overall separation rate is higher when the positive and negative powders on the surface of the copper-aluminum mixture are separated later.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications and substitutions can be made to these embodiments without departing from the principle and spirit of the present invention. and modifications, the scope of the invention is defined by the appended claims and their equivalents.

Claims (6)

1. The utility model provides a waste lithium battery retrieves with continuous efficient anaerobic pyrolysis oven, includes pyrolysis box (1) and transmission case (2), one side of pyrolysis box (1) is fixed with transmission case (2) through the bolt, its characterized in that: a conveying and discharging mechanism (13) is arranged in the cracking box (1);

the conveying and discharging mechanism (13) comprises a heating cover (131), an air cavity (132), an air vent (133), an air duct (134) and a rotating plate (135), wherein the heating cover (131) is arranged in the cracking box (1), the air cavity (132) is arranged in the heating cover (131), the air vent (133) is uniformly arranged on one side of the air cavity (132), one side of the air vent (133) is communicated with the heating cover (131), the air duct (134) is communicated with one side of the air cavity (132) and the top of the heating cover (131), and the rotating plate (135) is rotationally connected to the inner wall of the bottom of the heating cover (131).

The utility model discloses a pyrolysis oven, including transmission case (2), including pyrolysis oven (1), heating cover (131), bearing housing, pivot (7), first motor (4) is fixed with through the bolt in transmission case (2), and is located the output of first motor (4) and is fixed with pivot (7) through spot welding, the one end of pivot (7) runs through pyrolysis oven (1) one side in proper order, air cavity (132) and heating cover (131) back is fixed with reaction cover (12) through spot welding, swing joint has cover (8) are established through the bearing housing to the outer wall of pivot (7), and one side that is located cover (8) runs through pyrolysis oven (1) and through bearing and heating cover (131) swing joint, outer wall cover that pivot (7) are located air cavity (132) is established and is fixed with second flabellum (11), the outer wall cover that cover (8) are located pyrolysis oven (1) is established and is fixed with first flabellum (10).

2. The continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries according to claim 1, which is characterized in that: the utility model discloses a protection gas conveying device, including transmission case (2), cover, protection gas conveying device, pyrolysis box (1), cover and cover is fixed with second motor (5) through the bolt fastening in transmission case (2), and is located the output of second motor (5) and establishes and be fixed with first rim plate (6), cover (8) are located one side outer wall cover in transmission case (2) and establish and be fixed with second rim plate (9), and second rim plate (9) are connected through the belt with first rim plate (6), have protection gas conveying device (3) through the bolt fastening in transmission case (2), and be located one side and pyrolysis box (1) of protection gas conveying device (3).

3. The continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries according to claim 2, which is characterized in that: the utility model discloses a pyrolysis tank, including pyrolysis tank (1) and fixed in the top of pyrolysis tank (1), defeated feed cylinder (15) are installed to one side of pyrolysis tank (1), and are located one side of defeated feed cylinder (15) and run through pyrolysis tank (1) and extend to reaction cover (12) in, one side of defeated feed cylinder (15) is fixed with third motor (14) through the bolt, and is located one side of defeated feed cylinder (15) and be fixed with helical blade (16) through spot welding in the output of third motor (14), the outer wall that defeated feed cylinder (15) are located reaction cover (12) is fixed with scraper blade (17) through spot welding, quantitative storehouse (32) are installed at the top that defeated feed cylinder (15) are located pyrolysis tank (1) outside.

4. The continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries according to claim 3, wherein the continuous and efficient anaerobic cracking furnace is characterized in that: the utility model discloses a pyrolysis oven, including pyrolysis oven (1), gas storage tank (22), copper pipe (23) are installed through bolt fastening in the top of pyrolysis oven (1), and be located one side of rose oven (19) and install burning furnace (21), and be located the bottom of gas storage tank (22) and evenly communicate and have copper pipe (23), evenly install spark plug pipe (24) in gas storage tank (22), and be located one side of spark plug pipe (24) and extend to copper pipe (23), the one end of gas-guide tube (134) runs through the top of pyrolysis oven (1) and is linked together with one side of rose oven (19), the opposite side intercommunication of rose oven (19) has blast pipe (20), and is located the one end of blast pipe (20) and runs through the burning wheel and be linked together with gas storage tank (22).

5. The continuous and efficient anaerobic cracking furnace for recycling waste lithium batteries according to claim 3, wherein the continuous and efficient anaerobic cracking furnace is characterized in that: electric putter (25) are installed to the bottom of pyrolysis oven, and are located electric putter's (25) one end run through pyrolysis oven and with revolving board (135) sliding connection, discharge channel (26) have been seted up to the bottom of pyrolysis oven, one side intercommunication of transmission case (2) has waste gas pipe (27), and is located transmission case (2) bottom inner wall and install first filter plate (28), first ash bucket (29) are installed to the bottom of first filter plate (28), second filter plate (30) are installed to the bottom inner wall of transmission case (2), and are located the bottom of second filter plate (30) and install second ash bucket (31).

6. The continuous and efficient method for operating the anaerobic cracking furnace for recycling the waste lithium batteries according to any one of claims 1 to 5, which is characterized in that: the method comprises the following steps:

s1: feeding and turning cracking of materials, namely adding the crushed materials into a quantitative bin (32), pushing the crushed materials into a reaction cover (12) through a spiral blade (16) in a feed conveying cylinder (15), starting to work by a protective gas conveying device (3), introducing protective gas into the whole cracking box (1), simultaneously operating an external vacuum extraction device, and sealing the whole gas guide tube (134) and a discharge channel (26) before introducing the protective gas;

after the supplementation of the protective gas in the cracking box (1) is finished, the heating cover (131) starts to work, the oxygen content in the cracking furnace is measured, when the oxygen content in the furnace body is less than about 5%, the heating cover (131) starts to heat, the vacuum pumping system and the inert gas injection alternately operate in the heating process, the temperature is controlled below 150 ℃, the temperature in the furnace body starts to rise to be more than 300 ℃ when the oxygen content in the furnace body is less than 2%, the first motor (4) is started at the moment, the first motor (4) drives the reaction cover (12) in the heating cover (131) to rotate through the rotating shaft (7), and meanwhile the air guide pipe (134) starts to ventilate;

s2: the combustion of organic gas and the discharge of waste gas are realized, the rotating shaft (7) rotates and drives the second fan blade (11) in the air cavity (132) to rotate, so that the organic waste gas generated in the material cracking process enters the filter box (19) along the air duct (134), the organic gas which is preliminarily filtered by the filter box (19) enters the combustion furnace (21) to burn and heat the copper pipe (23), the generated waste gas enters the cracking box (1) at the periphery of the whole heating cover (131), at the moment, the whole second motor (5) starts to work and drives the first fan blade (10) to rotate, at the moment, the discharge channel (26) is opened, the protection gas and the waste gas are blown into the transmission box (2) simultaneously through the blowing of the first fan blade (10), and the waste gas is mixed with the protection gas and discharged into the purifying equipment through the waste gas pipe (27);

s3: after the material in the whole reaction cover (12) is cracked, the first motor (4) is reversed at this time so that the material guiding blade (18) on the inner wall of the reaction cover (12) rolls the cracked residue to one side of the bottom of the heating cover (131), the electric push rod (25) drives the rotating plate (135) to be unfolded at this time, the cracked residue falls to the bottom of the transmission case (2), the exhaust pipe (27) starts to blow air at this time, and the cracked residue is blown onto the first filter plate (28) and the second filter plate (30), and finally the cracked residue falls into the first ash bucket (29) and the second ash bucket (31).