A battery cracking apparatus with front exhaust

Abstract

The application relates to a front exhaust battery cracking device, which comprises a cracking kiln containing a casing and a cracking furnace body, a feeding channel is arranged on one side of the casing, a material collecting container is arranged on the other side of the casing, the material collecting container is provided with a discharging port, an explosion-proof assembly contains a pressure relief pipe connected to the upper end of the material collecting container, the exhaust end of the pressure relief pipe is connected to a water body containing cavity, a front exhaust assembly contains an exhaust pipe connected to the exhaust port of the feeding channel, the exhaust pipe is connected to the air inlet end of a physical filtering device, the air outlet end of the physical filtering device is connected to the air inlet end of a fireproof container, the air outlet end of the fireproof container is connected to a cracking gas combustion furnace, a closing plate is arranged outside the air inlet end of the fireproof container through an elastic element, and the side of the closing plate not connected to the elastic element is fixed by a pull assembly made of combustible material. The application can effectively realize front discharge of cracking tail gas under the premise of ensuring the safety of tail gas treatment, so that the doping amount of volatile substances in the post-cracking material is reduced.

Description

Technical Field

[0001] This invention relates to the technical field of battery crushing and recycling equipment, specifically to a front-venting battery pyrolysis device, which is mainly used for the pyrolysis treatment of crushed batteries. Background Technology

[0002] Waste lithium batteries contain electrolytes (such as lithium hexafluorophosphate), separators (polyolefins), and binders (PVDF). These organic components remain attached to the electrode material surface even after crushing. Therefore, the crushed battery fragments need to undergo pyrolysis treatment to lay the foundation for the subsequent high-purity recovery of metal resources.

[0003] Currently, the pyrolysis process of crushed battery fragments mainly involves completely breaking down organic matter into combustible gases (methane, hydrogen, etc.) in a high-temperature, oxygen-free environment (500–650℃). These combustible gases are then purified through secondary combustion before being released, avoiding environmental pollution. Existing battery pyrolysis equipment primarily concentrates its exhaust gas emissions at the discharge end. During this concentrated emission, some volatile substances in the exhaust gas can easily become mixed with the material and enter the discharge. In the subsequent cooling process, these substances will re-condense and adhere to the battery fragments, thus affecting the purity of the recovered metal resources.

[0004] To improve the purity of subsequently recycled metal resources, some waste battery recycling and processing plants have begun to try moving the emission location of battery pyrolysis exhaust gas forward to the front of the battery pyrolysis equipment, i.e., the feed end side. However, since the pyrolysis process of the battery fragments located on the feed end side of the battery pyrolysis equipment has only just begun, when the pyrolysis exhaust gas is discharged from the feed end side of the battery pyrolysis equipment, it is easy to carry some incompletely pyrolyzed small particles (dust and grease) along with it. This not only greatly increases the difficulty of exhaust gas treatment, but may also cause open flames during secondary combustion to ignite at the exhaust end, thus leading to safety accidents.

[0005] Therefore, the research objective of this invention is to design a pre-emission battery pyrolysis device that can effectively achieve pre-emission of pyrolysis exhaust gas while ensuring the safety of exhaust gas treatment, thereby reducing the amount of volatile substances in the pyrolysis materials and helping to improve the purity of subsequent metal resource recovery. Summary of the Invention

[0006] In view of the technical problems existing in the prior art, the present invention provides a front-venting battery pyrolysis device, which can effectively solve the technical problems existing in the prior art.

[0007] The technical solution of this invention is: A front-venting battery pyrolysis device, comprising: A pyrolysis kiln includes a casing and a pyrolysis furnace body rotatably installed inside the casing. A feed channel extending to the feed end of the pyrolysis furnace body is installed on one side of the casing. The feed channel is provided with feed inlets and exhaust outlets at intervals. A collection container connected to the discharge end of the pyrolysis furnace body is installed on the other side of the casing. A corresponding discharge outlet is provided at the lower end of the collection container. The explosion-proof component includes a pressure relief pipe connected to the upper end of the collection container. The vent end of the pressure relief pipe is connected to a corresponding water-containing cavity. The water-containing cavity is filled with water-sealing liquid at a level higher than the vent end of the pressure relief pipe. A corresponding liquid distribution groove is sleeved around the periphery of the water-containing cavity. Several guide holes are provided on the water-containing cavity facing the bottom side of the liquid distribution groove. Isolation ceramic plates are sealed and installed at the guide holes respectively. The liquid distribution groove is filled with corresponding spare water-sealing liquid. The front exhaust assembly includes an exhaust pipe connected to the exhaust port of the feed channel, the exhaust pipe being connected to the inlet of a corresponding physical filter, the outlet of the physical filter being connected to the inlet of a corresponding flame-retardant container, and the outlet of the flame-retardant container being connected to the inlet of a corresponding pyrolysis gas combustion furnace. A corresponding closing plate is provided on the outside of the inlet of the flame-retardant container by a corresponding elastic element. The side of the closing plate not connected to the elastic element is fixed by a traction assembly made of combustible material, so that the elastic element is set in a tensioned state. The traction assembly is fixedly connected to the outlet of the flame-retardant container.

[0008] The pulling assembly includes several pulling ropes arranged in a ring array. One end of each pulling rope is fixed to the back of the closing plate, and the other end of each pulling rope is fixed to the gas outlet of the flame-retardant container. The middle part of each pulling rope passes through a fixing hole on the outer side of the corresponding ring plate.

[0009] The pulling rope is made of nylon, and the annular plate is fixed to the flame-retardant container by a corresponding connecting rod.

[0010] A pressure sensor is installed on the exhaust pipe. When the combustion flame of the pyrolysis gas combustion furnace extends in the opposite direction into the flame-retardant container, the pull rope is burned off. The closing plate forms a seal on the air inlet of the flame-retardant container under the elastic force of the elastic element, and the pressure sensor detects the increase in gas pressure inside the exhaust pipe.

[0011] An oil trap is installed on the exhaust pipe to capture oil particles in the gas flowing through the exhaust pipe and transfer the captured oil back to the feed channel for further pyrolysis.

[0012] The exhaust pipe includes a horizontal exhaust section, and the two ends of the horizontal exhaust section are respectively connected to the exhaust port of the feed channel and the air inlet of the physical filter through corresponding conduits; the oil trap includes an oil trapping spiral plate rotatably disposed in the horizontal exhaust section of the exhaust pipe, and the oil trapping spiral plate is driven to the output shaft end of the corresponding oil trapping drive motor through a corresponding transmission shaft.

[0013] The pyrolysis furnace body is evenly equipped with multiple inclined tipping plates for pushing materials from the feed end to the discharge end, and the pyrolysis furnace body is driven by a corresponding furnace body drive mechanism.

[0014] The furnace body drive mechanism includes an external gear ring rotatably disposed at the end of the pyrolysis furnace body, and a drive gear meshing with the external gear ring. The drive gear is connected to the output shaft of the corresponding furnace body drive motor via a corresponding transmission shaft.

[0015] The casing is equipped with a heater for heating the pyrolysis furnace body, and the heater is an electric heater.

[0016] The physical filtration device uses a bag filter dust collector.

[0017] Compared with the prior art, the advantages and positive effects of the present invention are as follows: 1) The pre-exhaust assembly of the present invention includes an exhaust pipe connected to the exhaust port of the feed channel. The exhaust pipe is connected to the inlet end of the physical filter device, the outlet end of the physical filter device is connected to the inlet end of a corresponding flame-retardant container, and the outlet end of the flame-retardant container is connected to the inlet end of a corresponding pyrolysis gas combustion furnace. By setting the flame-retardant container, a spatial isolation is effectively formed when an open flame propagates towards the exhaust end, thereby reducing the further forward propagation of the open flame and improving the safety of exhaust gas treatment.

[0018] Most importantly, this invention further incorporates a closing plate on the outside of the gas inlet of the flame-retardant container via an elastic element. The side of the closing plate not connected to the elastic element is fixed by a combustible pulling assembly. When the combustion flame from the pyrolysis gas furnace extends in the reverse direction into the interior of the flame-retardant container, the combustible pulling assembly will burn out, causing the closing plate to seal the gas inlet of the flame-retardant container under the elastic force of the elastic element. This further completely isolates any backflowing open flame, enabling the pre-emission of pyrolysis tail gas while ensuring the safety of tail gas treatment. This effectively reduces the amount of volatile substances mixed in with the pyrolysis material, thus helping to improve the purity of subsequent metal resource recovery.

[0019] 2) The pulling assembly of the present invention includes a plurality of pulling ropes arranged in a ring array. One end of each pulling rope is fixed to the back of the closing plate and the other end is fixed to the gas outlet of the flame-retardant container. The middle part of each pulling rope passes through the fixing hole on the outer side of the corresponding ring plate. With the intervention of the ring plate, the pulling ropes arranged in a ring array are dispersed, so as to effectively increase the burn-off probability of the pulling assembly while maintaining sufficient pulling force. This ensures both the pulling effect on the closing plate and the timely burn-off of the pulling assembly when an open flame enters the flame-retardant container, thus ensuring the practical effect of the present invention.

[0020] 3) The exhaust pipe of the present invention is equipped with a corresponding pressure sensor. When the pull rope is burned off and the closing plate forms a seal on the air inlet of the flame-retardant container under the elastic force of the elastic element, the pressure sensor can detect the increase in air pressure in the exhaust pipe in time and transmit the signal to the corresponding electric controller to issue an alarm, thereby further improving the operational safety of the equipment.

[0021] 4) This invention also includes an explosion-proof component, comprising a pressure relief pipe connected to the upper end of the collection container. The vent end of the pressure relief pipe is connected to a corresponding water-containing cavity, and the water-containing cavity is filled with a water-sealing liquid at a level higher than the vent end of the pressure relief pipe. Most importantly, a corresponding liquid distribution groove is fitted around the periphery of the water-containing cavity. Several guide holes are provided on the water-containing cavity facing the bottom of the liquid distribution groove, and isolation ceramic plates are sealed and installed at each guide hole. The liquid distribution groove is filled with a corresponding spare water-sealing liquid. This is because the volatile solvents from the electrolyte produced by pyrolysis are flammable and explosive. In the event of an explosion due to excessive accumulation of volatile electrolyte solvents, the explosion shock wave can be discharged along the pressure relief pipe to reduce explosion losses. The shock wave generated by the explosion is effectively dissipated when it impacts the water seal liquid, and the shock wave will shatter the isolation ceramic plate, thereby keeping the guide hole in a connected state so that the spare water seal liquid can be introduced into the water containment cavity in time after the explosion, thus preventing the continuous large-scale discharge of pyrolysis tail gas after the explosion, which would exacerbate the severity of the safety accident.

[0022] 5) The exhaust pipe of the present invention is equipped with an oil trap. The horizontal exhaust section of the exhaust pipe allows the pyrolysis tail gas to flow smoothly. Then, the rotation of the oil trap spiral plate increases the contact rate between the airflow and the oil trap spiral plate, so that small oil particles in the airflow can be effectively attached to the oil trap spiral plate and enriched. Under the transmission action of the oil trap spiral plate, the enriched oil is reversed and transported back into the feed channel and re-enters the pyrolysis furnace for pyrolysis. This effectively reduces the amount of small dust and grease entrained in the front exhaust, thereby helping to improve the safety of the front exhaust system. Attached Figure Description

[0023] Figure 1This is a schematic diagram of the structure of the present invention.

[0024] Figure 2 This is a diagram showing the usage state of the present invention.

[0025] Figure 3 This is a schematic diagram of the pyrolysis kiln of the present invention.

[0026] Figure 4 This is a schematic diagram of the explosion-proof component of the present invention.

[0027] Figure 5 This is a schematic diagram of the structure of the flame-retardant container of the present invention.

[0028] Figure 6 This is a schematic diagram of the oil sludge collector of the present invention.

[0029] In the attached diagram: 1. Cracking kiln; 101. Casing; 102. Cracking furnace body; 103. Feed channel; 104. Collection container; 2. Explosion-proof component; 201. Pressure relief pipe; 202. Water container; 203. Water seal liquid; 204. Liquid distribution tank; 205. Isolation ceramic plate; 206. Backup water seal liquid; 3. Front exhaust component; 301. Exhaust pipe; 301. Horizontal exhaust section; 3012. Conduit; 302. Physical filtration device; 303. Flame retardant container; 4. Cracking gas combustion furnace; 5. Elastic component; 6. Closing plate; 7. Pulling component; 701. Pulling rope; 702. Ring plate; 702. Pressure sensor; 8. Oil trap; 9. Oil trap spiral plate; 901. Drive shaft; 902. Oil trap drive motor; 903. Inclined tipping plate; 10. External gear ring; 1101. Drive gear; 1102. Connecting shaft; 1103. Furnace body drive motor; 1104. Heater; 12. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] refer to Figure 1-6 A front-venting battery pyrolysis device, comprising: The pyrolysis kiln 1 includes a casing 101 and a pyrolysis furnace body 102 rotatably installed within the casing 101. A feed channel 103 extending to the feed end of the pyrolysis furnace body 102 is installed on one side of the casing 101. The feed channel 103 is provided with feed inlets and exhaust outlets at intervals (in this embodiment, a corresponding feeding auger is installed within the feed channel 103, and the feed inlet of the feed channel 103 is connected to the discharge end of the corresponding lifting auger). A collection container 104 connected to the discharge end of the pyrolysis furnace body 102 is installed on the other side of the casing 101. A corresponding discharge outlet is provided at the lower end of the collection container 104. In this embodiment, a pushing auger for pushing battery fragments into the pyrolysis furnace body 102 is installed within the feed channel 103. The explosion-proof component 2 includes a pressure relief pipe 201 connected to the upper end of the collection container 104. The exhaust end of the pressure relief pipe 201 is connected to a corresponding water-containing cavity 202. The water-containing cavity 202 is filled with water-sealing liquid 203 with a liquid level higher than the exhaust end of the pressure relief pipe 201. A corresponding liquid distribution groove 204 is sleeved around the periphery of the water-containing cavity 202. Several guide holes are provided on the water-containing cavity 202 facing the bottom side of the liquid distribution groove 204. Isolation ceramic plates 205 are respectively sealed and installed at the guide holes. The liquid distribution groove 204 is filled with a corresponding spare water-sealing liquid 206. The front exhaust assembly 3 includes an exhaust pipe 301 connected to the exhaust port of the feed channel 103. The exhaust pipe 301 is connected to the air inlet of the corresponding physical filter 302. The air outlet of the physical filter 302 is connected to the air inlet of the corresponding flame-retardant container 303. The air outlet of the flame-retardant container 303 is connected to the air inlet of the corresponding pyrolysis gas combustion furnace 4. A corresponding closing plate 6 is provided on the outside of the air inlet of the flame-retardant container 303 by a corresponding elastic member 5. The side of the closing plate 6 not connected to the elastic member 5 is fixed by a combustible tensioning assembly 7, so that the elastic member 5 is set in a tensioned state. The tensioning assembly 7 is fixedly connected to the air outlet of the flame-retardant container 303.

[0032] The pre-exhaust assembly 3 of the present invention includes an exhaust pipe 301 connected to the exhaust port of the feed channel 103. The exhaust pipe 301 is connected to the air inlet of the physical filter 302, the air outlet of the physical filter 302 is connected to the air inlet of the corresponding flame-retardant container 303, and the air outlet of the flame-retardant container 303 is connected to the air inlet of the corresponding pyrolysis gas combustion furnace 4. By setting the flame-retardant container 303, a spatial isolation is effectively formed when the open flame spreads towards the exhaust end, thereby reducing the further forward spread of the open flame and improving the safety of exhaust gas treatment.

[0033] Most importantly, this invention further incorporates a closing plate 6 on the outside of the air inlet of the flame-retardant container 303 via an elastic element 5. The side of the closing plate 6 not connected to the elastic element 5 is fixed by a combustible pulling assembly 7. When the combustion flame of the pyrolysis gas combustion furnace 4 extends in the reverse direction into the interior of the flame-retardant container 303, the combustible pulling assembly 7 will be burned off, thereby causing the closing plate 6 to seal the air inlet of the flame-retardant container 303 under the elastic force of the elastic element 5. In this way, the backflow of open flame can be completely isolated, so as to achieve the pre-emission of pyrolysis tail gas while ensuring the safety of tail gas treatment, thereby effectively reducing the amount of volatile substances in the pyrolysis material and helping to improve the purity of subsequent metal resource recovery.

[0034] The present invention also includes an explosion-proof component 2, which comprises a pressure relief pipe 201 connected to the upper end of the collection container 104. The vent end of the pressure relief pipe 201 is connected to a corresponding water-containing cavity 202, and the water-containing cavity 202 is filled with a water-sealing liquid 203 at a level higher than the vent end of the pressure relief pipe 201. Most importantly, a corresponding liquid distribution trough 204 is also sleeved around the water-containing cavity 202. The water-containing cavity 202 is provided with several guide holes facing the bottom side of the liquid distribution trough 204. Isolation ceramic plates 205 are respectively sealed and installed at the guide holes, and the liquid distribution trough 204 is filled with a corresponding spare water-sealing liquid 206. This is because the electrolyte solvent volatiles produced by pyrolysis have flammable and explosive properties. In the event of an explosion due to excessive accumulation of electrolyte solvent volatiles, the explosion shock wave can be discharged along the pressure relief pipe 201 to reduce explosion losses. The shock wave generated by the explosion is effectively dissipated when it impacts the water seal liquid 203, and the shock wave will shatter the isolation ceramic plate 205, thereby keeping the guide hole in a connected state so that the spare water seal liquid 206 can be promptly introduced into the water container cavity 202 after the explosion, thereby preventing the continuous large-scale discharge of pyrolysis tail gas after the explosion, which would exacerbate the severity of the safety accident.

[0035] The pulling assembly 7 includes a plurality of pulling ropes 701 arranged in a circular array. One end of each pulling rope 701 is fixed to the back of the closing plate 6, and the other end of each pulling rope 701 is fixed to the gas outlet of the flame-retardant container 303. The middle portion of each pulling rope 701 passes through a fixing hole on the outer side of a corresponding annular plate 702. The pulling rope 701 is made of nylon, polyester, or polypropylene rope. The annular plate 702 is fixed to the flame-retardant container 303 via a corresponding connecting rod. In this embodiment, the pulling rope 701 is made of nylon.

[0036] With the intervention of the annular plate 702, the pull ropes 701 arranged in a ring array are dispersed, so as to effectively increase the probability of the pull assembly 7 burning off while maintaining sufficient pulling force. This ensures both the pulling effect on the closed plate 6 and the timely burning off of the pull assembly 7 when an open flame enters the flame-retardant container 303, thus ensuring the practical effect of the present invention.

[0037] A pressure sensor 8 is installed on the exhaust pipe 301. When the combustion flame of the pyrolysis gas combustion furnace 4 extends in the opposite direction into the flame-retardant container 303, the pull rope 701 is burned off. The closing plate 6, driven by the elastic force of the elastic element 5, seals the air inlet of the flame-retardant container 303, and the pressure sensor 8 detects an increase in air pressure inside the exhaust pipe 301. After the pressure sensor 8 detects the increase in air pressure inside the exhaust pipe 301, it promptly transmits the corresponding electrical signal to the corresponding electrical controller to issue an alarm, thereby further improving the operational safety of the equipment.

[0038] An oil trap 9 is provided on the exhaust pipe 301 to capture oil particles in the gas flowing through the exhaust pipe 301 and transfer the captured oil back to the feed channel 103 for further pyrolysis.

[0039] The exhaust pipe 301 includes a horizontal exhaust section 3011, the two ends of which are respectively connected to the exhaust port of the feed channel 103 and the air inlet of the physical filter device 302 through corresponding conduits 3012; the oil trap 9 includes an oil trap spiral plate 901 rotatably disposed on the horizontal exhaust section 3011 of the exhaust pipe 301, and the oil trap spiral plate 901 is driven to the output shaft end of the corresponding oil trap drive motor 903 through a corresponding drive shaft 902.

[0040] The exhaust pipe 301 of the present invention is equipped with an oil trap 9. The horizontal exhaust section 3011 of the exhaust pipe 301 allows the pyrolysis tail gas to flow smoothly. Then, the rotation of the oil trap spiral plate 901 increases the contact rate between the airflow and the oil trap spiral plate 901, so that small oil particles in the airflow can be effectively attached to the oil trap spiral plate 901 and enriched. Under the transmission action of the oil trap spiral plate 901, the enriched oil is reversed and transported back into the feed channel 103 and re-enters the pyrolysis furnace body 102 for pyrolysis. This effectively reduces the amount of small dust and grease entrained in the front exhaust, thereby helping to improve the safety of the front exhaust.

[0041] The pyrolysis furnace body 102 is provided with a plurality of inclined tipping plates 10 evenly distributed inside, which are used to push the material from the feed end to the discharge end. The pyrolysis furnace body 102 is driven by a corresponding furnace body drive mechanism.

[0042] The furnace body drive mechanism includes an outer gear ring 1101 rotatably disposed at the end of the pyrolysis furnace body 102, and a drive gear 1102 meshing with the outer gear ring 1101. The drive gear 1102 is transmitted to the output shaft end of the corresponding furnace body drive motor 1104 through a corresponding connecting shaft 1103.

[0043] The casing 101 is equipped with a heater 12 for heating the pyrolysis furnace body 102, and the heater 12 is an electric heater.

[0044] The physical filtration device 302 adopts a bag filter dust collector. Since the bag filter dust collector is an existing device, its specific structure will not be described in detail here.

[0045] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments that can be applied to other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the protection scope of the present invention.

Claims

1. A front-venting battery pyrolysis device, characterized in that, include: The pyrolysis kiln (1) includes a casing (101) and a pyrolysis furnace body (102) rotatably installed inside the casing (101). A feed channel (103) extending to the feed end of the pyrolysis furnace body (102) is installed on one side of the casing (101). The feed channel (103) is provided with feed inlets and exhaust outlets at intervals. A collection container (104) connected to the discharge end of the pyrolysis furnace body (102) is installed on the other side of the casing (101). A corresponding discharge outlet is provided at the lower end of the collection container (104). The explosion-proof component (2) includes a pressure relief pipe (201) connected to the upper end of the collection container (104). The exhaust end of the pressure relief pipe (201) is connected to a corresponding water-containing cavity (202). The water-containing cavity (202) is filled with water-sealing liquid (203) with a liquid level higher than the exhaust end of the pressure relief pipe (201). A corresponding liquid distribution groove (204) is sleeved around the water-containing cavity (202). Several guide holes are provided on the water-containing cavity (202) facing the bottom side of the liquid distribution groove (204). Isolation ceramic plates (205) are respectively sealed and installed at the guide holes. The liquid distribution groove (204) is filled with a corresponding spare water-sealing liquid (206). The front exhaust assembly (3) includes an exhaust pipe (301) connected to the exhaust port of the feed channel (103). The exhaust pipe (301) is connected to the air inlet of the corresponding physical filter (302). The air outlet of the physical filter (302) is connected to the air inlet of the corresponding flame-retardant container (303). The air outlet of the flame-retardant container (303) is connected to the air inlet of the corresponding pyrolysis gas combustion furnace (4). A corresponding closing plate (6) is provided on the outside of the air inlet of the flame-retardant container (303) by a corresponding elastic element (5). The side of the closing plate (6) not connected to the elastic element (5) is fixed by a fusible tensioning assembly (7) so that the elastic element (5) is in a tensioned state. The tensioning assembly (7) is fixedly connected to the air outlet of the flame-retardant container (303).

2. The battery pyrolysis device with front-venting exhaust according to claim 1, characterized in that, The pulling assembly (7) includes a plurality of pulling ropes (701) arranged in a ring array. One end of each pulling rope (701) is fixed to the back of the closing plate (6), and the other end of each pulling rope (701) is fixed to the gas outlet of the flame-retardant container (303). The middle part of each pulling rope (701) is installed through a fixing hole on the outside of the corresponding ring plate (702).

3. The battery pyrolysis device with front-venting exhaust according to claim 2, characterized in that, The pulling rope (701) is made of one of nylon rope, polyester rope, or polypropylene rope, and the annular plate (702) is fixed to the flame-retardant container (303) by a corresponding connecting rod.

4. The battery pyrolysis device with front-venting exhaust according to claim 3, characterized in that, A pressure sensor (8) is installed on the exhaust pipe (301). When the combustion flame of the pyrolysis gas combustion furnace (4) extends in the opposite direction into the flame-retardant container (303), the pull rope (701) is burned off. The closing plate (6) forms a seal on the air inlet of the flame-retardant container (303) under the elastic force of the elastic element (5). The pressure sensor (8) detects the increase in air pressure inside the exhaust pipe (301).

5. The battery pyrolysis device with front-venting exhaust according to claim 1, characterized in that, An oil trap (9) is provided on the exhaust pipe (301) to capture oil particles in the gas flowing through the exhaust pipe (301) and transfer the captured oil back to the feed channel (103) for pyrolysis.

6. A battery pyrolysis device with front-venting exhaust according to claim 5, characterized in that, The exhaust pipe (301) includes a horizontal exhaust section (3011), the two ends of which are respectively connected to the exhaust port of the feed channel (103) and the air inlet of the physical filter device (302) through corresponding conduits (3012); the oil trap (9) includes an oil trap spiral plate (901) rotatably disposed on the horizontal exhaust section (3011) of the exhaust pipe (301), and the oil trap spiral plate (901) is driven to the output shaft end of the corresponding oil trap drive motor (903) through a corresponding drive shaft (902).

7. The battery pyrolysis device with front-venting exhaust according to claim 1, characterized in that, The pyrolysis furnace body (102) is provided with a plurality of inclined tipping plates (10) for pushing materials from the feed end to the discharge end. The pyrolysis furnace body (102) is driven by a corresponding furnace body drive mechanism.

8. A battery pyrolysis device with front-venting exhaust according to claim 7, characterized in that, The furnace body drive mechanism includes an outer gear ring (1101) rotatably disposed at the end of the pyrolysis furnace body (102) and a drive gear (1102) meshing with the outer gear ring (1101). The drive gear (1102) is driven to the output shaft end of the corresponding furnace body drive motor (1104) through a corresponding connecting shaft (1103).

9. A battery pyrolysis device with front-venting exhaust according to claim 1, characterized in that, The casing (101) is equipped with a heater (12) for heating the pyrolysis furnace body (102), and the heater (12) is an electric heater.

10. A battery pyrolysis device with front-venting exhaust according to claim 1, characterized in that, The physical filtration device (302) adopts a bag filter dust collector.

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