CN219319017U

CN219319017U - High-efficiency energy-saving carbonization furnace for lithium battery cathode material

Info

Publication number: CN219319017U
Application number: CN202223188480.8U
Authority: CN
Inventors: 胡栋; 胡斯友; 高艳春
Original assignee: Hubei Huayuan Kiln Co ltd
Current assignee: Hubei Huayuan Kiln Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-07-07
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a high-efficiency energy-saving carbonization furnace for lithium battery cathode materials, which comprises a furnace body, a volatile matter recovery device, a waste discharge treatment device, an external furnace circulation system and an automatic measurement and control system, wherein all sections of the carbonization furnace are connected according to the running direction of a process, a large amount of combustible volatile matters appear in the lithium battery cathode raw materials at the initial carbonization stage, the auxiliary heating is performed by adopting a volatile matter extraction device, the utilization efficiency is highest, the carbonization furnace is provided with a grading cooling device and an advanced control system by the automatic control device by adopting a carbonization cooling section, the carbonization process and atmosphere requirements are timely and accurately met, the waste discharge treatment device is adopted for heat exchange and waste gas filtration, the effect of improving the energy efficiency is achieved by reducing the heat loss, the combustion temperature is effectively improved, the waste heat is fully utilized, the environmental pollution is reduced, the carbonization period is effectively shortened by adopting an integrated three-dimensional structure, the hot air circulation is more uniform and smooth, the heat exchange is more reasonable, and the running efficiency is improved.

Description

High-efficiency energy-saving carbonization furnace for lithium battery cathode material

Technical Field

The utility model relates to the technical field of lithium battery anode material production equipment, in particular to an efficient and energy-saving carbonization furnace for lithium battery anode materials.

Background

The lithium ion battery is excellent in performance and green, and has become one of the key points of the development of the high and new technology, the lithium ion battery has the characteristics of high capacity, low consumption, no memory effect, small volume, repeated use in a circulating way and the like, the main constituent materials of the lithium ion battery comprise electrolyte, isolating materials, positive and negative electrode materials and the like, the carbonization process of the negative electrode material of the battery is a necessary link for lithium battery production at present, and the carbonization production of the negative electrode material is carried out by filling lithium battery powder into a sagger.

Industry is a major energy-consuming area and also a major source of emissions of pollutants. The aim of realizing energy conservation, emission reduction and energy utilization rate improvement mainly depends on the industrial field, besides the factors of relatively backward production process and unreasonable industrial structure, the industrial waste heat utilization rate is low, the energy (energy) is not fully and comprehensively utilized to be an important reason for high energy consumption, a large amount of industrial energy consumption is directly abandoned in various forms of waste heat, a large amount of resource waste is caused, and when the anode materials are carbonized, the waste gas generated by the carbonization furnace contains a large amount of heat at the same time, and the pollution can also waste the energy if the waste gas is directly discharged into the atmosphere, and the phenomena of uneven carbonization, high energy consumption, long period and the like occur when the carbonization furnace is used for carbonizing the anode materials in batches.

Disclosure of Invention

The utility model aims to provide an efficient and energy-saving carbonization furnace for a lithium battery cathode material, so as to solve the problems in the background technology.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a high-efficient energy-conserving lithium cell negative pole material carbonization stove, includes stove body, volatile matter recovery unit, exhaust treatment device, external circulation system, automatic measurement and control system, the stove body includes preheating discharge section, carbonization heating section, carbonization constant temperature section, carbonization cooling section, and advances the car direction of operation according to the technology and connect and form, is equipped with gas heating device in carbonization heating section and carbonization constant temperature section side crisscross, is equipped with hierarchical cooling device at carbonization cooling section side and top, volatile matter recovery unit includes volatile matter extraction device, volatile matter supercharging device, auxiliary heating device, all installs in preheating discharge section, carbonization heating section side and top, volatile matter supercharging device entrance point connects the volatile matter extraction device, the exit end links to each other with auxiliary heating device, and auxiliary heating device installs in carbonization heating section rear end side upper portion; the waste discharge treatment device comprises a waste gas filtering device, a heat exchange device, a heat discharge air port, a smoke discharge pipe and a smoke discharge port, wherein the waste gas filtering device and the heat exchange device are arranged on a top platform of the preheating discharge section, and the smoke discharge port is distributed on the middle lower side surface of the preheating discharge section; the automatic measurement and control system comprises a temperature measuring device, a pressure measuring device and an automatic control device, wherein the temperature measuring device and the pressure measuring device are arranged on the side surface and the top surface of the furnace body.

As a further scheme of the utility model: the preheating and discharging section is provided with a double-door sealing device, the double doors are formed by pressing a temperature-resistant and corrosion-resistant material, the inside of each door is filled with a heat-insulating material, and the double doors are controlled by an automatic control device by adopting interlocking delay.

As a further scheme of the utility model: the grading cooling device is provided with a protective gas storage tank, a protective gas introduction device, a slow cooling air supply device and a tail cooling air supply device.

As a further scheme of the utility model: the bottom of the furnace body is provided with a sliding rail and a trolley, and the top surface of the trolley is provided with a sagger made of high-temperature-resistant and crack-resistant materials.

As a further scheme of the utility model: the front and back of the trolley are provided with collision curved sealing structures, and both sides of the trolley are provided with advanced friction curved sealing devices for sealing.

Compared with the prior art, the utility model has the beneficial effects that: according to the utility model, a large amount of combustible volatile matters appear in the raw material of the cathode of the lithium battery in the initial carbonization stage, the auxiliary heating is performed by adopting the volatile matter extraction device, the utilization efficiency is highest, the carbonization furnace adopts the carbonization cooling section provided with the grading cooling device and the advanced control system, the carbonization process and atmosphere requirements are timely and accurately met, the waste discharge treatment device is adopted for heat exchange and waste gas filtration, the effect of improving the energy efficiency is achieved by reducing the heat loss, the combustion temperature is effectively improved, the waste heat is fully utilized, the environmental pollution is reduced, the carbonization cycle is effectively shortened by one third by adopting the integrated three-dimensional structure, the hot air circulation is more uniform and smooth, the heat exchange is more reasonable, the operation efficiency is improved, and the factory land is saved.

Drawings

Fig. 1 is a schematic structural diagram of an efficient and energy-saving carbonization furnace for lithium battery anode materials.

Fig. 2 is a schematic plan view of a high-efficiency energy-saving carbonization furnace for lithium battery cathode materials.

In the figure: 1. a furnace body; 2. volatile matter recovery device; 3. a waste disposal device; 4. an external circulation system 5 and an automatic measurement and control system; 6. a gas heating device; 7. a hierarchical cooling device; 8. a double door seal device; 9. preheating the discharge section; 10. carbonizing and heating section; 11. carbonizing the constant temperature section; 12. carbonizing and cooling section; 13. an exhaust gas filtering device; 14. a heat exchange device; 15. a heat extraction tuyere; 16. a smoke exhaust pipe; 17. a smoke outlet; 18. a volatile matter extracting device; 19. volatile matter supercharging device; 20. an auxiliary heating device; 21. a hot air pumping combustion-supporting fan; 22. a temperature measuring device; 23. a pressure measuring device; 24. a shielding gas storage tank; 25. a shielding gas introduction device; 26. a slow cooling air supply device; 27. tail cooling air supply device; 28. a loading device; 29. a sagger detection and control device; 30. a car unloading device; 31. a sagger; 32. an automatic control device; 33. a slide rail; 34. a trolley; 35. an automatic transfer vehicle; 36. an automatic carriage return positioning device.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-2, in the embodiment of the utility model, a high-efficiency energy-saving carbonization furnace for lithium battery cathode materials comprises a furnace body 1, a volatile matter recovery device 2, a waste disposal device 3, an external furnace circulation system 4 and an automatic measurement and control system 5, wherein the furnace body 1 comprises a preheating discharge section 9, a carbonization heating section 10, a carbonization constant temperature section 11 and a carbonization cooling section 12, which are connected according to the running direction of a process, the side surfaces of the carbonization heating section 10 and the carbonization constant temperature section 11 are alternately provided with a gas heating device 6, the side surfaces and the top of the carbonization cooling section 12 are provided with a grading cooling device 7, the volatile matter recovery device 2 comprises a volatile matter pumping device 18, a volatile matter pressurizing device 19 and an auxiliary heating device 20, which are all arranged on the side surfaces and the top of the preheating discharge section 9, the carbonization heating section 10, the inlet end of the volatile matter pressurizing device 19 is connected with the volatile matter pumping device 18, the outlet end is connected with the auxiliary heating device 20, and the auxiliary heating device 20 is arranged on the upper part of the rear end side in the carbonization heating section 10; the waste discharge treatment device 3 comprises a waste gas filtering device 13, a heat exchange device 14, a heat discharge air port 15, a smoke discharge pipe 16 and a smoke discharge port 17, wherein the waste gas filtering device 13 and the heat exchange device 14 are arranged on a platform at the top of the preheating discharge section 9, and the smoke discharge port 17 is distributed on the middle-lower side surface of the preheating discharge section 9; the external furnace circulation system 4 comprises a loading device 28, a sagger detection and control device 29, a unloading device 30, an automatic transfer trolley 35 and an automatic carriage return positioning device 36, wherein the automatic transfer trolley 35 is distributed at the inlet and outlet ends of the furnace body 1, the loading device 28 is positioned at the vehicle inlet side of the sagger detection and control device 29, the unloading device 30 is positioned at the vehicle outlet side of the sagger detection and control device 29, the automatic measurement and control system 5 comprises a temperature measuring device 22, a pressure measuring device 23 and an automatic control device 32, and the temperature measuring device 22 and the pressure measuring device 23 are arranged at the side surface and the top surface of the furnace body 1.

The preheating and discharging section 9 is provided with a double door sealing device 8, the double door is formed by pressing a temperature-resistant and corrosion-resistant material, the inside of the door is filled with a heat-insulating material, and the double door is controlled by an automatic control device 32 by adopting a chain delay.

The step cooling device 7 is provided with a protective gas storage tank 24, a protective gas introduction device 25, a slow cooling air supply device 26 and a tail cooling air supply device 27.

The bottom of the furnace body 1 is provided with a sliding rail 33 and a trolley 34, and the top surface of the trolley 34 is provided with a sagger 31 made of high-temperature-resistant and crack-resistant materials.

The trolley 34 is provided with a collision curved sealing structure at the front and back, and advanced friction curved sealing devices are arranged at both sides for sealing.

The working principle of the utility model is as follows:

according to the utility model, when the lithium battery cathode raw material is used, the trolley 34 is filled in the sagger 31 through the loading device 28, the filled product enters the furnace through the automatic transfer trolley 35 and passes through the preheating discharge section 9, the carbonization heating section 10, the carbonization constant temperature section 11 and the carbonization cooling section 12, and then is discharged out of the furnace, then sequentially enters the unloading device 30 and the sagger detection device 29 through the automatic transfer trolley 35, a large amount of combustible volatile matters appear in the lithium battery cathode raw material at the initial stage of carbonization, the lithium battery cathode raw material is continuously pumped into the auxiliary heating device 20 through the volatile matter supercharging device 19 after being pumped out from the preheating discharge section 9 by the volatile matter pumping device 18, and is combusted and heated, the highest in utilization efficiency is achieved; because the carbonization furnace adopts an integrated three-dimensional structure, the carbonization period is effectively shortened by one third, the hot air flow circulation is more uniform and smooth, the heat exchange is more fully and reasonably carried out, the operation efficiency is improved, and the factory land is saved.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

Although the present utility model has been described with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements and changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. The utility model provides a high-efficient energy-conserving lithium cell negative pole material carbonization stove, includes stove body (1), volatile matter recovery unit (2), exhaust processing apparatus (3), external circulation system (4), automatic measurement and control system (5), its characterized in that, stove body (1) is including preheating emission section (9), carbonization heating section (10), carbonization constant temperature section (11), carbonization cooling section (12), and go into car direction according to the technology and connect and form, be equipped with gas heating device (6) in carbonization heating section (10) and carbonization constant temperature section (11) side are crisscross, be equipped with hierarchical heat sink (7) in carbonization cooling section (12) side and top, volatile matter recovery unit (2) are including taking out volatile matter device (18), volatile matter supercharging device (19), auxiliary heating device (20), install in preheating emission section (9), carbonization heating section (10) side and top, volatile matter supercharging device (19) entrance point connect taking out volatile matter device (18), the exit end links to each other with auxiliary heating device (20), and auxiliary heating device (20) are installed in carbonization section (10) rear end side position. The waste discharge treatment device (3) comprises a waste gas filtering device (13), a heat exchange device (14), a heat discharge air port (15), a smoke discharge pipe (16) and a smoke outlet (17), wherein the waste gas filtering device (13) and the heat exchange device (14) are arranged on a top platform of the preheating discharge section (9), and the smoke outlet (17) is distributed on the middle-lower side surface of the preheating discharge section (9); the external furnace circulation system (4) comprises a loading device (28), a sagger detection and control device (29), a unloading device (30), an automatic transfer vehicle (35) and an automatic return positioning device (36), wherein the automatic transfer vehicle (35) is distributed at the inlet and outlet ends of the furnace body (1), the loading device (28) is positioned at the loading side of the sagger detection and control device (29), and the unloading device (30) is positioned at the unloading side of the sagger detection and control device (29); the automatic measurement and control system (5) comprises a temperature measuring device (22), a pressure measuring device (23) and an automatic control device (32), wherein the temperature measuring device (22) and the pressure measuring device (23) are arranged on the side face and the top face of the furnace body (1).

2. The high-efficiency energy-saving carbonization furnace for lithium battery cathode materials according to claim 1, wherein the preheating discharge section (9) is provided with a double door sealing device (8), the double door is formed by pressing a temperature-resistant corrosion-resistant material, the inside of the door is filled with a heat-insulating material, and the double door is controlled by an automatic control device (32) by adopting a linkage time delay.

3. The efficient and energy-saving carbonization furnace for lithium battery cathode materials according to claim 1, wherein the grading cooling device (7) is provided with a protective gas storage tank (24), a protective gas introduction device (25), a slow cooling air supply device (26) and a tail cooling air supply device (27).

4. The high-efficiency and energy-saving carbonization furnace for lithium battery cathode materials according to claim 1, wherein a sliding rail (33) and a trolley (34) are arranged at the bottom of the furnace body (1), and a high-temperature-resistant and crack-resistant sagger (31) is arranged on the top surface of the trolley (34).

5. The high-efficiency and energy-saving carbonization furnace for lithium battery cathode materials according to claim 4, wherein the trolley (34) is provided with a collision curved sealing structure at the front and back, and advanced friction curved sealing devices are arranged at both sides for sealing.