CN113108063A - Sealing structure and continuous reaction treatment equipment for graphite cathode material/phosphate and ternary anode material of lithium ion battery - Google Patents
Sealing structure and continuous reaction treatment equipment for graphite cathode material/phosphate and ternary anode material of lithium ion battery Download PDFInfo
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- CN113108063A CN113108063A CN202110437666.3A CN202110437666A CN113108063A CN 113108063 A CN113108063 A CN 113108063A CN 202110437666 A CN202110437666 A CN 202110437666A CN 113108063 A CN113108063 A CN 113108063A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/34—Sealings between relatively-moving surfaces with slip-ring pressed against a more or less radial face on one member
- F16J15/3464—Mounting of the seal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0073—Sealings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/28—Moving reactors, e.g. rotary drums
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/002—Sealings comprising at least two sealings in succession
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3268—Mounting of sealing rings
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
- F16J15/3284—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings characterised by their structure; Selection of materials
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
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Abstract
本发明的密封结构及锂离子电池石墨类负极材料/磷酸盐、三元正极材料连续反应处理设备，密封结构包括设置在旋转反应器各主要漏气点处的密封装置，密封装置包括沿旋转反应器周向布置的第一固体密封组、气体密封组和第二固体密封组，第一固体密封组、气体密封组和第二固体密封组在漏气点处沿轴向方向依次布置，且相互之间形成轴向密封。包覆炭化/烧结设备包括进料机构、旋转反应器和出料机构。进料机构和出料机构对接在旋转反应器的相应的进料端和出料端，旋转反应器与进料机构和出料机构的对接处均设置有上述的密封结构。该设备具有结构简单可靠、密封性能好优点。
The sealing structure and the lithium ion battery graphite negative electrode material/phosphate, ternary positive electrode material continuous reaction processing equipment of the present invention, the sealing structure includes sealing devices arranged at the main leakage points of the rotary reactor, and the sealing device includes rotating The first solid sealing group, the gas sealing group and the second solid sealing group are arranged in the circumferential direction of the device. An axial seal is formed between them. The coating carbonization/sintering equipment includes a feeding mechanism, a rotary reactor and a discharging mechanism. The feeding mechanism and the discharging mechanism are butted on the corresponding feeding end and the discharging end of the rotary reactor, and the above-mentioned sealing structures are provided at the butting positions of the rotary reactor and the feeding mechanism and the discharging mechanism. The device has the advantages of simple and reliable structure and good sealing performance.
Description
Technical Field
The invention mainly relates to the field of preparation of graphite cathode materials of lithium ion batteries, in particular to a sealing structure and continuous reaction treatment equipment for graphite cathode materials/phosphates and ternary cathode materials of lithium ion batteries.
Background
During the coating and charring process of asphalt, a large amount of aromatic harmful gases are released, which are harmful to human bodies and have unpleasant odor. Therefore, the coating carbonization process of needle coke or natural graphite and asphalt needs to be operated under positive pressure to prevent external air from permeating into the reactor to generate oxidation combustion reaction and destroy the normal coating carbonization reaction process in the reactor. However, the reactor is a rotating cylinder, and the sealing problem of the equipment in dynamic operation exists between the reactor and the fixed ends of the head and the tail of the equipment, so that if the sealing is not tight, harmful gas in the furnace can be leaked into a factory building, and the environment is polluted. Such aromatic hydrocarbon-containing organic compound gases have an unpleasant taste and deteriorate the working environment of workers in production plants, and thus it is necessary and urgent to develop an effective solution to this problem.
The process is similar to the coating carbonization process of the graphite cathode material of the lithium ion battery. At present, lithium iron phosphate, lithium nickel cobalt manganese oxide/lithium nickel cobalt aluminate (NCM/NCA) ternary lithium ion battery anode materials are also subjected to high-temperature static sintering in a pushed slab kiln or a roller kiln. The fully mixed raw materials are loaded into a corundum-mullite ceramic sagger and then enter a pushed slab kiln or a roller kiln for sintering, the temperature of a pre-sintering section is controlled below 600 ℃, and the drainage, coke removal and coating work of the materials is completed; the temperature of the high-temperature sintering section is controlled within the range of 600-1000 ℃, and the solid-phase sintering reaction of the precursor of the anode material and the lithium salt is completed. In the sintering process, a large amount of heat is absorbed by the ceramic sagger, and a large amount of heat loss is caused by the fact that the materials and the sagger need to be cooled at the discharge hole. In addition, because static sintering is adopted, heat transfer is limited, longer heat treatment residence time is needed compared with dynamic sintering, and the overall energy consumption is higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a sealing structure with simple and reliable structure and good sealing performance and a continuous reaction treatment device for graphite cathode materials/phosphates and ternary anode materials of lithium ion batteries.
In order to solve the technical problems, the invention adopts the following technical scheme:
the utility model provides a seal structure, is including setting up the sealing device at each main gas leakage point department of rotatory reactor, sealing device includes along the sealed group of first solid, gas seal group and the sealed group of second solid that rotatory reactor circumference was arranged, first solid seals group, gas seal group and the sealed group of second solid are in gas leakage point department arranges in proper order along the axial direction and forms axial seal each other.
As a further improvement of the above technical solution:
the first, gas, and second solid seal groups each form a radial seal against the rotary reactor.
The first solid sealing group comprises a first static ring, a first elastic sealing element and a first movable ring, the first elastic sealing element is arranged between the first static ring and the rotary reactor in a pressing mode, the first movable ring is connected with the end portion of the first static ring and axially compresses the first elastic sealing element, and the gas sealing group is connected with the first movable ring.
The gas seal group comprises a second stationary ring, an inflation cavity with the air pressure larger than the air pressure in the rotary reactor is formed between the second stationary ring and the rotary reactor, an inflation tube used for inflating protective gas into the inflation cavity is arranged on the second stationary ring, and the second solid seal group is connected with the second stationary ring.
The second solid sealing group comprises a third static ring, a second elastic sealing element and a pushing and pressing element, the third static ring is connected with the gas sealing group, the second elastic sealing element is installed between the third static ring and the rotary reactor in a pressing mode, and the pushing and pressing element is installed on the third static ring and exerts radial pressure on the second elastic sealing element.
The second solid sealing group further comprises a fourth static ring, a third elastic sealing element and a second movable ring, the fourth static ring is connected with the third static ring, the third elastic sealing element is arranged between the fourth static ring and the rotary reactor in a pressing mode, and the second movable ring is connected with the end portion of the fourth static ring and compresses the third elastic sealing element axially.
The utility model provides a lithium ion battery graphite class cathode material/phosphate, ternary cathode material continuous reaction treatment facility, includes feed mechanism, rotatory reactor and discharge mechanism, feed mechanism and discharge mechanism butt joint are at corresponding feed end and the discharge end of rotatory reactor, the butt joint department of rotatory reactor and feed mechanism and discharge mechanism all is provided with foretell seal structure.
As a further improvement of the above technical solution:
the rotary reactor comprises a reactor body and a regulator capable of being adjusted in the radial direction relative to the reactor body, the regulator is arranged between the reactor body and the sealing structure along the periphery of the reactor body, and the regulator can be radially and elastically adjusted to achieve radial compression with the sealing structure.
One end of the regulator is fixedly connected to the outer wall of the reactor body, and the other end of the regulator is elastically connected to the outer wall of the reactor body through the setting regulation support frame.
The rotary reactor comprises a coating/pre-sintering section connected with a feeding end and a carbonization/sintering section connected with the coating/pre-sintering section so as to realize the sequential and continuous conveying of reaction materials from the feeding end, the coating/pre-sintering section and the carbonization/sintering section to a discharging end, a first heating furnace for coating/pre-sintering the reaction materials by heating is arranged outside the coating/pre-sintering section of the rotary reactor, and a second heating furnace for carbonizing/sintering the reaction materials by heating is arranged outside the carbonization/sintering section of the rotary reactor.
The rotary reactor is obliquely arranged, the feeding end of the rotary reactor is at a high position, and the discharging end of the rotary reactor is at a low position; the included angle between the axis of the rotary reactor and the horizontal line is a, and a is more than 0 degree and less than or equal to 10 degrees.
Compared with the prior art, the invention has the advantages that:
according to the sealing structure, a rotating gap exists at the butt joint of the rotating reactor and the fixing piece at the end part of the rotating reactor, and the rotating reactor is sealed by the first solid sealing group, so that harmful gas is prevented from leaking; protective gas is further introduced through the gas sealing group, so that on one hand, the gas pressure of the gas sealing group is greater than the gas pressure in the rotary reactor to form further positive pressure sealing, and on the other hand, if the protective gas enters the rotary reactor, the protective gas can be provided for the rotary reactor, and the reaction efficiency is further improved; and the second solid seal group further forms a seal for the rotary reactor, which is equivalent to forming a third stage seal, and further prevents the leakage of protective nitrogen. The whole structure is simple and reliable, and the sealing performance is good. The graphite cathode material/phosphate and ternary cathode material continuous reaction treatment equipment for the lithium ion battery is provided with the sealing structure, so that the graphite cathode material/phosphate and ternary cathode material continuous reaction treatment equipment has the corresponding technical effect of the sealing structure.
Drawings
Fig. 1 is a schematic structural view of the seal structure of the present invention.
FIG. 2 is a schematic structural diagram of a continuous reaction treatment device for graphite-based negative electrode materials/phosphates and ternary positive electrode materials of a lithium ion battery.
Fig. 3 is an enlarged schematic view of a portion a of fig. 2.
The reference numerals in the figures denote:
1. a feeding mechanism; 2. rotating the reactor; 21. a reactor body; 211. a lower adjustment plate; 212. adjusting the support frame; 22. a regulator; 221. an upper adjusting plate; 23. a rotary drive member; 231. driving the supporting seat; 232. a drive motor; 233. a speed reducer; 234. a drive wheel; 235. a driving wheel; 3. a discharging mechanism; 4. a sealing device; 41. a first solid seal pack; 411. a first stationary ring; 412. a first resilient seal member; 413. a first rotating ring; 42. a gas seal group; 421. a second stationary ring; 422. an inflation cavity; 423. an inflation tube; 43. a second solid seal group; 431. a third stationary ring; 432. a second resilient seal member; 433. a biasing member; 434. a fourth stationary ring; 435. a third resilient seal member; 436. a second rotating ring; 5. a first heating furnace; 51. a first furnace body; 52. a first heating member; 6. a second heating furnace; 61. a second furnace body; 62. a second heating member; 7. a support device; 71. a roller seat; 72. and supporting the wheels.
Detailed Description
The invention will be described in further detail below with reference to the drawings and specific examples.
As shown in fig. 1, an embodiment of the sealing structure of the present invention includes a sealing device 4 disposed at each main gas leakage point of a rotary reactor 2, wherein the sealing device 4 includes a first solid sealing group 41, a gas sealing group 42 and a second solid sealing group 43 arranged along the circumferential direction of the rotary reactor 2, and the first solid sealing group 41, the gas sealing group 42 and the second solid sealing group 43 are arranged in sequence along the axial direction at the gas leakage point and form an axial seal with each other. In the structure, a rotating gap exists at the butt joint of the rotating reactor 2 and a fixing piece at the end part of the rotating reactor, and the rotating reactor 2 is sealed by the first solid sealing group 41 to prevent harmful gas from leaking; protective gas is further introduced through the gas sealing group 42, so that on one hand, the gas pressure of the gas sealing group 42 is greater than the gas pressure in the rotary reactor 2 to form further positive pressure sealing, and on the other hand, if the protective gas enters the rotary reactor 2, the protective gas can be provided for the rotary reactor 2, and the reaction efficiency is further improved; and the second solids seal pack 43 further forms a seal against the rotary reactor 2, equivalent to forming a third stage seal, further preventing leakage of protective nitrogen. The whole structure is simple and reliable, and the sealing performance is good.
In this embodiment, first solids seal pack 41, gas seal pack 42, and second solids seal pack 43 each form a radial seal with respect to rotary reactor 2. Through the axial and radial double sealing, the sealing performance is greatly improved.
In this embodiment, the first solid sealing group 41 includes a first stationary ring 411, a first elastic sealing element 412 and a first moving ring 413, the first elastic sealing element 412 is press-fitted between the first stationary ring 411 and the rotary reactor 2, the first moving ring 413 is connected with an end of the first stationary ring 411 and axially presses the first elastic sealing element 412, and the gas sealing group 42 is connected with the first moving ring 413. In this structure, the first elastic sealing element 412 is formed by an asbestos packing to form a soft high-temperature-resistant sealing material, and the first movable ring 413 axially compresses the first elastic sealing element 412, so that the first elastic sealing element 412 radially expands, and the first elastic sealing element 412 radially seals the rotary reactor 2.
In this embodiment, the gas sealing group 42 includes a second stationary ring 421, an inflation cavity 422 with a gas pressure greater than the gas pressure in the rotary reactor 2 is formed between the second stationary ring 421 and the rotary reactor 2, an inflation tube 423 for inflating the protective gas into the inflation cavity 422 is installed on the second stationary ring 421, and the second solid sealing group 43 is connected to the second stationary ring 421. In this configuration, nitrogen is introduced through the gas introduction pipe 423 to make the gas pressure of the gas introduction chamber 422 higher than the gas pressure in the rotary reactor 2, thereby forming a further positive pressure seal.
In this embodiment, the second solid seal group 43 comprises a third stationary ring 431, a second elastic seal 432 and a pushing member 433, the third stationary ring 431 is connected with the gas seal group 42, the second elastic seal 432 is press-fitted between the third stationary ring 431 and the rotary reactor 2, and the pushing member 433 is installed on the third stationary ring 431 and applies radial pressure to the second elastic seal 432. In this structure, the second elastic sealing member 432 is formed of an asbestos packing to form a soft high-temperature-resistant sealing material, and the pressing member 433 radially presses the second elastic sealing member 432 so that the second elastic sealing member 432 radially seals the rotary reactor 2.
In this embodiment, the second solids seal group 43 further comprises a fourth stationary ring 434, a third elastic seal 435 and a second moving ring 436, the fourth stationary ring 434 being connected to the third stationary ring 431, the third elastic seal 435 being press-fitted between the fourth stationary ring 434 and the rotary reactor 2, the second moving ring 436 being connected to the end of the fourth stationary ring 434 and axially pressing the third elastic seal 435. In this structure, the third elastic sealing element 435 is made of asbestos packing to form a soft high-temperature-resistant sealing material, and the second movable ring 436 axially compresses the third elastic sealing element 435, so that the third elastic sealing element 435 radially expands, thereby achieving the purpose that the third elastic sealing element 435 radially seals the rotary reactor 2.
As shown in fig. 2 and fig. 3, an embodiment of the continuous reaction processing equipment for graphite-based negative electrode material/phosphate and ternary positive electrode material of a lithium ion battery according to the present invention includes a feeding mechanism 1, a rotary reactor 2 and a discharging mechanism 3, wherein the feeding mechanism 1 and the discharging mechanism 3 are butted at corresponding feeding end and discharging end of the rotary reactor 2, and the butted positions of the rotary reactor 2 and the feeding mechanism 1 and the discharging mechanism 3 are provided with the above-mentioned sealing structures. In the structure, the rotary reactor 2 has a relative motion relationship with the feeding mechanism 1 and the discharging mechanism 3, so that a rotary gap exists at the butt joint of the rotary reactor 2 and the feeding mechanism 1 and the discharging mechanism 3, and the rotary reactor 2 is sealed by the first solid sealing group 41 to prevent protective nitrogen gas from leaking; protective gas is further introduced through the gas sealing group 42, so that on one hand, the gas pressure of the gas sealing group 42 is greater than the gas pressure in the rotary reactor 2 to form further positive pressure sealing, and on the other hand, if the protective gas enters the rotary reactor 2, the protective gas can be provided for the rotary reactor 2, and the reaction efficiency is further improved; and the second solids seal pack 43 further forms a seal against the rotary reactor 2, equivalent to forming a third stage seal, further preventing leakage of protective nitrogen. The whole structure is simple and reliable, and the sealing performance is good.
In the present embodiment, the rotary reactor 2 includes a reactor body 21 and a regulator 22 capable of being radially adjusted relative to the reactor body 21, the regulator 22 is disposed between the reactor body 21 and the sealing structure along the periphery of the reactor body 21, and the regulator 22 can be radially compressed with the sealing structure by radial elastic adjustment. In the structure, on one hand, the regulator 22 separates the reactor body 21 from the first solid seal group 41, the gas seal group 42 and the second solid seal group 43 by a certain distance to form a heat insulation cavity, so that the first solid seal group 41 and the second solid seal group 43 are prevented from being directly heated, the service lives of the first solid seal group 41 and the second solid seal group 43 are prolonged, and meanwhile, the sealing effect is ensured; further the regulator 22 is radially adjustable relative to the reactor body 21 to ensure that each position of the regulator 22 is radially sealed from the first solids seal pack 41, the gas seal pack 42 and the second solids seal pack 43.
In this embodiment, one end of the regulator 22 is fixedly connected to the outer wall of the reactor body 21, the other end is elastically connected to the outer wall of the reactor body 21 by setting the regulating support 212, the inner wall of the end of the regulator 22 close to the butt joint is fixedly provided with the upper regulating plate 221, the outer wall of the reactor body 21 at the corresponding position is fixedly provided with the lower regulating plate 211, the outer wall of the other end of the reactor body 21 is fixedly provided with the regulating support 212, and when the regulating support 212 pushes the regulator 22 to the radial corresponding position, the upper regulating plate 221 and the lower regulating plate 211 are fixedly connected. In the structure, during adjustment, the adjuster 22 is pushed to a radial corresponding position by the adjusting support frame 212, and then the upper adjusting plate 221 and the lower adjusting plate 211 are fixedly connected to form sealing, so that the structure is simple and reliable.
In this embodiment, the rotary reactor 2 includes a coating/pre-sintering section connected to the feeding end and a carbonization section connected to the coating/sintering section to realize sequential and continuous transportation of the reaction materials from the feeding end, the coating/pre-sintering section, and the carbonization/sintering section to the discharging end, a first heating furnace 5 for coating/pre-sintering the reaction materials by heating is arranged outside the coating/pre-sintering section of the rotary reactor 2, and a second heating furnace 6 for carbonizing/sintering the reaction materials by heating is arranged outside the carbonization section of the rotary reactor 2. When the reactor is operated, the rotary reactor 2 is started firstly, so that the rotary reactor 2 operates and rotates; then starting a first heating furnace 5 and a second heating furnace 6 to enable the body of the corresponding section to reach a corresponding preset temperature zone; then starting the feeding mechanism 1 to enable the needle coke and the asphalt mixed according to a certain proportion to enter the rotary reactor 2 through the feeding mechanism 1; and finally, starting the discharging mechanism 3 to output the material which is coated and carbonized from the discharging mechanism 3. Compared with the traditional structure, the equipment realizes the continuity of the processes of coating of the graphite cathode material/presintering of the cathode material, carbonizing of the cathode material/sintering of the anode material and cooling through the integrated rotary reactor 2, ensures the consistency of products, obviously improves the product quality, replaces the prior processes of coating of the cathode material by a reaction kettle, cooling of a cooling kettle, carbonizing of a roller kiln or a pushed slab kiln, indirect cooling equipment of water and carbonization of the anode material by a box furnace, roller kiln or pushed slab kiln, and indirect cooling equipment of water, greatly simplifies the process flow and the labor intensity and the number of workers, greatly reduces the energy consumption of products per ton, obviously reduces the equipment investment, labor cost and energy consumption cost, and can realize the large-scale of the equipment; meanwhile, the computer automatic control is easy to realize, so that the production cost is greatly reduced.
In the embodiment, the rotary reactor 2 is obliquely arranged, the feeding end of the rotary reactor 2 is at a high position, and the discharging end of the rotary reactor 2 is at a low position; the included angle between the axis of the rotary reactor 2 and the horizontal line is a, and a is more than 0 degree and less than or equal to 10 degrees. Set up like this for the material is in the rotatory effort of self gravity and rotatory reactor 2 and is lastingly carried to the discharge end, has improved efficiency. Specifically set at 7.
In this embodiment, the first heating furnace 5 and the second heating furnace 6 are both arranged coaxially with the rotary reactor 2. By the arrangement, the consistent distance between the first heating furnace 5 and the second heating furnace 6 and the circumferential direction of the rotary reactor 2 is ensured, namely the thermal uniformity of the corresponding temperature zone of the rotary reactor 2 is ensured.
In this embodiment, the first heating furnace 5 and the second heating furnace 6 are arranged at intervals along the rotary reactor 2. The arrangement is convenient for temperature arrangement and regulation in each temperature zone, and mutual influence is reduced.
In this embodiment, the support devices 7 for supporting the corresponding positions of the rotary reactor 2 are installed at intervals on the periphery of the rotary reactor 2. Because the rotary reactor 2 is a continuous integrated structure, the length of the rotary reactor is longer, and the supporting devices 7 are arranged at intervals, so that the rotary reactor 2 is conveniently supported, and the stability of the equipment is improved.
In this embodiment, the supporting device 7 includes a roller seat 71 and a supporting wheel 72, the supporting wheel 72 is fixed on the rotating reactor 2, the roller seat 71 is fixed on the ground and contacts with the supporting wheel 72, and the normal rotating function of the rotating reactor 2 can be ensured while the rotating reactor 2 is supported.
In this embodiment, the rotary reactor 2 further comprises a rotary driving member 23, and the rotary driving member 23 is disposed at the periphery of the reactor body 21 and drives the reactor body 21 to rotate. In this structure, the reactor body 21 is driven to rotate by the rotary driving member 23, and the structure is simple and reliable.
In this embodiment, the rotary driving member 23 includes a driving support seat 231, a driving motor 232, a speed reducer 233, a driving wheel 234 and a driving wheel 235, the driving support seat 231 is fixed on the ground, the driving wheel 234 is installed on the driving support seat 231, the driving wheel 235 is fixed on the reactor body 21 and connected to the driving wheel 234, the driving motor 232 drives the driving wheel 234 to rotate through the speed reducer 233, so as to drive the reactor body 21 to rotate through the driving wheel 235.
In the present embodiment, the first heating furnace 5 includes a first furnace body 51 and a first heating member 52 mounted on the first furnace body 51 and extending to the inside thereof, the first furnace body 51 being disposed at the periphery of the rotary reactor 2; the second heating furnace 6 includes a second furnace body 61 and a second heating member 62 installed on the second furnace body 61 and extending to the inside thereof, and the second furnace body 61 is disposed at the periphery of the rotary reactor 2. In the structure, the first heating furnace 5 is designed to have a temperature of 0-650 ℃, an electric heating element (a first heating element 52), combustion fuel oil, combustion producer gas and combustion natural gas can be used for a heat supply mode, a burner for burning the fuel can adopt a radiation type burner for ensuring the uniformity of a temperature field, and the task of a first section is mainly to complete the coating and partial carbonization of the carbon raw material by the asphalt; the second heating furnace 6 is designed to be 450-1100 ℃, and the heating mode can use an electric heating element (a second heating element 62), fuel oil combustion, producer gas combustion and natural gas combustion. In order to reduce energy consumption, a regenerative burner can be adopted as a burner for burning fuel. The second stage of the process mainly completes the carbonization of the coated asphalt.
In other embodiments, the device can also be used for continuous high-temperature sintering of lithium iron phosphate cathode materials of lithium ion batteries. Similarly, the rotary reactor 2 comprises a pre-sintering section connected with the feeding end and a carbonization section connected with the pre-sintering section to realize the sequential and continuous conveying of reaction materials from the feeding end, the pre-sintering section and the sintering section to the discharging end, a first heating furnace 5 for realizing the pre-sintering of the reaction materials through heating is arranged outside the pre-sintering section of the rotary reactor 2, and a second heating furnace 6 for realizing the sintering of the reaction materials through heating is arranged outside the sintering section of the rotary reactor 2. When the reactor is operated, the rotary reactor 2 is started firstly, so that the rotary reactor 2 operates and rotates; then starting a first heating furnace 5 and a second heating furnace 6 to enable the body of the corresponding section to reach a corresponding preset temperature zone; starting the feeding mechanism 1 again to enable the precursor and the lithium salt mixed according to a certain proportion to enter the rotary reactor 2 through the feeding mechanism 1; and finally, starting the discharging mechanism 3 to output the material subjected to high-temperature sintering from the discharging mechanism 3. Compared with the traditional structure, the equipment realizes the continuity of the coating high-temperature sintering and cooling processes of the lithium iron phosphate anode material of the lithium ion battery through the integrated rotary reactor 2, ensures the consistency of products and obviously improves the product quality; the method has the advantages that the existing box-type furnace and roller kiln or pushed slab kiln sintering equipment is replaced, the process flow and the labor intensity and the number of workers for operating the workers are greatly simplified, the energy consumption per ton of products is greatly reduced, the equipment investment, the labor cost and the energy consumption cost are obviously reduced, and the large-scale equipment can be realized; meanwhile, the computer automatic control is easy to realize, so that the production cost is greatly reduced.
In other embodiments, the device can also be used for continuous high-temperature sintering of the nickel cobalt lithium manganate ternary positive electrode material of the lithium ion battery. Similarly, the rotary reactor 2 comprises a pre-sintering section connected with the feeding end and a carbonization section connected with the pre-sintering section to realize the sequential and continuous conveying of reaction materials from the feeding end, the pre-sintering section and the sintering section to the discharging end, a first heating furnace 5 for realizing the pre-sintering of the reaction materials through heating is arranged outside the coating section of the rotary reactor 2, and a second heating furnace 6 for realizing the sintering of the reaction materials through heating is arranged outside the sintering section of the rotary reactor 2. When the reactor is operated, the rotary reactor 2 is started firstly, so that the rotary reactor 2 operates and rotates; then starting a first heating furnace 5 and a second heating furnace 6 to enable the body of the corresponding section to reach a corresponding preset temperature zone; starting the feeding mechanism 1 again to enable the ternary precursor and the lithium salt mixed according to a certain proportion to enter the rotary reactor 2 through the feeding mechanism 1; and finally, starting the discharging mechanism 3 to output the material subjected to high-temperature sintering from the discharging mechanism 3. Compared with the traditional structure, the device realizes the continuity of the processes of pre-sintering, high-temperature sintering and cooling of the lithium ion battery nickel cobalt lithium manganate anode material through the integrated rotary reactor 2, ensures the consistency of products and obviously improves the product quality; the sintering equipment of the prior roller kiln or pushed slab kiln is replaced, the process flow and the labor intensity and the number of workers for operating the workers are greatly simplified, the energy consumption per ton of products is also greatly reduced, the equipment investment, the labor cost and the energy consumption cost are obviously reduced, and the large-scale equipment can be realized; meanwhile, the computer automatic control is easy to realize, so that the production cost is greatly reduced.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (11)
1. A sealing structure, characterized in that: including setting up sealing device (4) at each main gas leakage point department of rotatory reactor (2), sealing device (4) include along first solid seal group (41), gas seal group (42) and the second solid seal group (43) that rotatory reactor (2) circumference was arranged, first solid seal group (41), gas seal group (42) and second solid seal group (43) are in gas leakage point department arranges in proper order along axial direction, and forms axial seal each other.
2. The seal structure of claim 1, wherein: the first solid seal group (41), the gas seal group (42) and the second solid seal group (43) each form a radial seal to the rotary reactor (2).
3. The seal structure of claim 1, wherein: the first solid sealing group (41) comprises a first static ring (411), a first elastic sealing element (412) and a first moving ring (413), the first elastic sealing element (412) is installed between the first static ring (411) and the rotary reactor (2) in a pressing mode, the first moving ring (413) is connected with the end portion of the first static ring (411) and axially compresses the first elastic sealing element (412), and the gas sealing group (42) is connected with the first moving ring (413).
4. The seal structure of claim 1, wherein: the gas seal group (42) comprises a second stationary ring (421), an inflation cavity (422) with the air pressure larger than the air pressure in the rotary reactor (2) is formed between the second stationary ring (421) and the rotary reactor (2), an inflation tube (423) used for inflating the inflation cavity (422) with protective gas is arranged on the second stationary ring (421), and the second solid seal group (43) is connected with the second stationary ring (421).
5. The seal structure of claim 1, wherein: the second solid seal group (43) comprises a third static ring (431), a second elastic seal (432) and a pushing element (433), the third static ring (431) is connected with the gas seal group (42), the second elastic seal (432) is pressed between the third static ring (431) and the rotary reactor (2), and the pushing element (433) is installed on the third static ring (431) and applies radial pressure to the second elastic seal (432).
6. The seal structure of claim 5, wherein: the second solid seal group (43) further comprises a fourth stationary ring (434), a third elastic seal (435) and a second moving ring (436), the fourth stationary ring (434) is connected with the third stationary ring (431), the third elastic seal (435) is pressed between the fourth stationary ring (434) and the rotary reactor (2), and the second moving ring (436) is connected with the end of the fourth stationary ring (434) and axially presses the third elastic seal (435).
7. A lithium ion battery graphite type cathode material/phosphate, ternary cathode material continuous reaction treatment facility which characterized in that: the device comprises a feeding mechanism (1), a rotary reactor (2) and a discharging mechanism (3), wherein the feeding mechanism (1) and the discharging mechanism (3) are butted at the corresponding feeding end and the discharging end of the rotary reactor (2), and the butt joints of the rotary reactor (2) and the feeding mechanism (1) and the discharging mechanism (3) are provided with the sealing structure of any one of claims 1 to 6.
8. The lithium ion battery graphite-based negative electrode material/phosphate, ternary positive electrode material continuous reaction treatment equipment according to claim 7, characterized in that: the rotary reactor (2) comprises a reactor body (21) and a regulator (22) which can be radially adjusted relative to the reactor body (21), wherein the regulator (22) is arranged between the reactor body (21) and the sealing structure along the periphery of the reactor body (21), and the regulator (22) can be radially pressed with the sealing structure through radial elastic adjustment.
9. The lithium ion battery graphite-based negative electrode material/phosphate, ternary positive electrode material continuous reaction treatment equipment according to claim 8, characterized in that: one end of the regulator (22) is fixedly connected to the outer wall of the reactor body (21), and the other end of the regulator is elastically connected to the outer wall of the reactor body (21) through the setting of the regulating support frame (212).
10. The lithium ion battery graphite-based negative electrode material/phosphate, ternary positive electrode material continuous reaction treatment equipment according to any one of claims 7 to 9, characterized in that: the rotary reactor (2) comprises a graphite cathode material coating/anode material pre-sintering section connected with a feeding end and a graphite cathode material carbonization/anode material sintering section connected with the coating/pre-sintering section so as to realize the sequential and continuous conveying of reaction materials from the feeding end, the coating/pre-sintering section and the carbonization/sintering section to a discharging end, a first heating furnace (5) for coating/pre-sintering the reaction materials by heating is arranged outside the coating section of the rotary reactor (2), and a second heating furnace (6) for carbonizing/sintering the reaction materials by heating is arranged outside the carbonization/sintering section of the rotary reactor (2).
11. The lithium ion battery graphite-based negative electrode material/phosphate, ternary positive electrode material continuous reaction treatment equipment according to claim 10, characterized in that: the rotary reactor (2) is obliquely arranged, the feeding end of the rotary reactor (2) is at a high position, and the discharging end of the rotary reactor (2) is at a low position; the included angle between the axis of the rotating reactor (2) and the horizontal line is a, and a is more than 0 degree and less than or equal to 10 degrees.
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| CN216923193U (en) * | 2021-04-22 | 2022-07-08 | 湖南阿斯米科技有限公司 | Sealing structure and continuous reaction treatment equipment for graphite cathode material/phosphate and ternary anode material of lithium ion battery |
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