Drying device for drying electrode material
By designing a drying device including an external heat rotary drying furnace and an external heat vacuum rotary furnace, the manual operation and air pollution problems of electrode materials in the traditional drying process are solved, and efficient and pollution-free drying of electrode materials is achieved, ensuring product quality.
Patent Information
- Application Number
- CN202421055898.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-02-28
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the prior art, when the electrode material is transferred from the reactor to the drying equipment, it requires manual operation, resulting in waste of resources and contamination of impurities, affecting the performance of the electrode material.
A drying device including an external heat rotary drying furnace and an external heat vacuum rotary furnace is designed. By sealing the pipes and vacuum systems, the drying process of the electrode materials without artificial contact and air pollution is realized.
It effectively reduces the contact between the electrode material and the air, reduces impurity pollution, ensures the high-quality output of the electrode material, and controls the moisture below 1%.
Smart Images
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Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery production equipment, in particular to a drying device for drying electrode materials. Background Art
[0002] As the earliest supercapacitor electrode material, activated carbon powder has a long history of industrial production and application. The raw materials for the production of activated carbon powder are abundant, such as coal, wood, nut shells, resin, etc. After the raw materials are conditioned, they are carbonized and activated to produce activated carbon powder. The production process of activated carbon powder requires two drying steps.
[0003] In the prior art, after the electrode materials are mixed and stirred in a reactor, they need to be transferred from the reactor to a drying device. The traditional transfer process is done manually, which consumes human resources and transportation time. On the other hand, during the transfer process, the electrode materials come into contact with the air, causing the electrode materials to be contaminated by impurities in the air, which is not conducive to the quality of production and processing and may damage the performance of the electrode materials.
[0004] To this end, we proposed a drying device for drying electrode materials in order to solve the above problems. Utility Model Content
[0005] The utility model aims to solve the problems in the background technology and proposes a drying device for drying electrode materials.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a drying device for drying electrode materials, comprising an externally heated rotary drying furnace and an externally heated vacuum rotary furnace, wherein the electrode materials are sequentially dried by passing through the externally heated rotary drying furnace and the externally heated vacuum rotary furnace;
[0007] The feeding front end of the externally heated rotary drying furnace is connected to a reactor, the electrode material in the reactor passes through the first sealed furnace head of the externally heated rotary drying furnace to reach the inside of the externally heated rotary drying furnace, a plurality of burners are arranged at the bottom of the externally heated rotary drying furnace, the top of the first sealed furnace head is connected to an exhaust pipe, the discharging end of the externally heated rotary drying furnace is connected to a first sealed unloading tower, the feeding port of the first sealed unloading tower is connected to a screw feeder, the auger shaft in the screw feeder transfers the primary dried electrode material to the direction of the externally heated vacuum rotary furnace, the externally heated vacuum rotary furnace is connected to an external vacuum system, the discharging end of the externally heated vacuum rotary furnace is connected to a second sealed unloading tower, and the first sealed unloading tower and the second sealed unloading tower are both provided with sealed unloading valves.
[0008] In the above-mentioned drying device for drying electrode materials, the outlet end of the gas outlet pipe is connected to a scrubbing tower, and a centrifugal fan is connected to the outside of the scrubbing tower.
[0009] In the above-mentioned drying device for drying electrode materials, the reactor is connected to the externally heated rotary drying furnace through a feed pipe, and the feed pipe is provided with a plurality of air outlet holes at the upper end of the portion entering the inner side of the first sealed furnace head.
[0010] In the above-mentioned drying device for drying electrode materials, the feed pipe is arranged to be inclined toward the direction of the external heat rotary drying furnace.
[0011] In the above-mentioned drying device for drying electrode materials, a resistive heating furnace is provided inside the externally heated vacuum rotary furnace.
[0012] In the above-mentioned drying device for drying electrode materials, the second sealed furnace head is externally connected to a first exhaust passage, and the first exhaust passage is connected to a vacuum system.
[0013] In the above-mentioned drying device for drying electrode materials, the second sealed unloading tower is externally connected to a second air extraction channel, and the second air extraction channel is connected to a vacuum system.
[0014] In the above-mentioned drying device for drying electrode materials, the first exhaust channel and the second exhaust channel are commonly connected to an exhaust main pipe, and the exhaust main pipe is connected to the vacuum system.
[0015] Compared with the existing technology, the advantages of the drying device for drying electrode materials are:
[0016] The utility model reduces the contact between the electrode material and the air and reduces the pollution of impurities by directly sending the wet electrode material from the reactor into the externally heated rotary drying furnace, controls the moisture content of the electrode material to be below 5% by the externally heated rotary drying furnace, and then sends the electrode material into the externally heated vacuum rotary furnace for secondary drying, and ensures low-temperature drying under a vacuum state during the drying process to continuously reduce the moisture content and ensure that the moisture content after treatment is controlled below 1%. By adopting sealed unloading and vacuum drying, the water vapor generated in the externally heated vacuum rotary furnace is effectively discharged, the pressure in the externally heated vacuum rotary furnace is reduced, and the quality of the discharged electrode material is effectively guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.
[0018] In the figure: 1 reactor, 2 first sealed furnace head, 3 externally heated rotary drying furnace, 4 gas outlet channel, 5 gas washing tower, 6 centrifugal fan, 7 first sealed unloading tower, 8 screw feeder, 9 second sealed furnace head, 10 externally heated vacuum rotary furnace, 11 second sealed unloading tower, 12 first exhaust channel, 13 second exhaust channel, 14 exhaust main pipe, 15 vacuum system, 16 burner, 17 feed pipe. DETAILED DESCRIPTION
[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0020] Embodiment 1
[0021] Reference Figure 1 A drying device for drying electrode materials, comprising an externally heated rotary drying furnace 3 and an externally heated vacuum rotary furnace 10, wherein the electrode materials are sequentially dried by passing through the externally heated rotary drying furnace 3 and the externally heated vacuum rotary furnace 10;
[0022] The feeding front end of the external heating rotary drying furnace 3 is connected with a reactor 1, and the electrode material in the reactor 1 passes through the first sealed furnace head 2 of the external heating rotary drying furnace 3 to reach the inside of the external heating rotary drying furnace 3. In order to facilitate the removal of excess exhaust gas, the outlet end of the exhaust pipe 4 is connected to the scrubbing tower 5, and the outside of the scrubbing tower 5 is connected to a centrifugal fan 6. In addition, we connect the reactor 1 and the external heating rotary drying furnace 3 through a feeding pipe 17, and the feeding pipe 17 is tilted toward the direction of the external heating rotary drying furnace 3, so as to facilitate and smoother delivery of the electrode material into the external heating rotary drying furnace 3. The feeding pipe 17 is provided with a plurality of air outlet holes at the upper end of the part entering the inner side of the first sealed furnace head 2 to facilitate the discharge of gas;
[0023] A plurality of burners 16 are provided at the bottom of the externally heated rotary drying furnace 3, an exhaust pipe 4 is connected to the top of the first sealed furnace head 2, a first sealed unloading tower 7 is connected to the discharge end of the externally heated rotary drying furnace 3, a discharge port of the first sealed unloading tower 7 is connected to a screw feeder 8, an auger shaft in the screw feeder 8 transfers the primary dried electrode material to the direction of the externally heated vacuum rotary furnace 10, a resistive heating furnace chamber is provided inside the externally heated vacuum rotary furnace 10, the externally heated vacuum rotary furnace 10 is connected to an external vacuum system 15, the discharge end of the externally heated vacuum rotary furnace 10 is connected to a second sealed unloading tower 11, the first sealed unloading tower 7 and the second sealed unloading tower 11 are both provided with sealed unloading valves, the specific connection method is: the second sealed furnace head 9 is externally connected to a first exhaust channel 12, the first exhaust channel 12 is connected to a vacuum system 15, the second sealed unloading tower 11 is externally connected to a second exhaust channel 13. The second air extraction channel 13 is connected to a vacuum system 15 , and the first air extraction channel 12 and the second air extraction channel 13 are connected to an air extraction main pipe 14 , and the air extraction main pipe 14 is connected to the vacuum system 15 .
[0024] Working principle:
[0025] 1. Feed the wet electrode material into the externally heated rotary drying furnace through the feed pipe at the end of the reactor (after the reactor is processed), and control the moisture content of the electrode material to less than 5% through the externally heated rotary drying furnace;
[0026] 2. The electrode material after the first drying is discharged through the sealed discharge valve of the first sealed discharge tower, and is fed again through the sealed screw feeder to the externally heated vacuum rotary furnace. Through the connection with the vacuum system, the low vacuum state in the externally heated vacuum rotary furnace is maintained. It should be noted that the vacuum system is an existing traditional vacuum system;
[0027] 3. The externally heated vacuum rotary kiln adopts a resistive heating furnace to heat the furnace and control the temperature at 60-80°C, so that the electrode material is dried at low temperature under vacuum, continuously reducing the moisture content and ensuring that the moisture content of the discharge material is controlled below 1%.
[0028] 4. The electrode material then passes through the sealed discharge valve of the second sealed discharge tower, and the vacuum-dried electrode material is packaged under the premise that the material still maintains a certain temperature. The suction force generated by the electrode material during cooling is used to reduce the air pressure in the packaging bag, causing the packaging bag to shrink and produce a low vacuum state.
[0029] 5. The vacuum system is used to discharge the water vapor generated in the external heating vacuum rotary kiln. At the same time, reducing the pressure is conducive to the evaporation of water and effectively ensures the quality of the discharge.
[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A drying device for drying electrode materials, characterized in that: It comprises an externally heated rotary drying furnace (3) and an externally heated vacuum rotary furnace (10), wherein the electrode material is sequentially dried by passing through the externally heated rotary drying furnace (3) and the externally heated vacuum rotary furnace (10); The feeding front end of the externally heated rotary drying furnace (3) is connected to a reaction kettle (1), the electrode material in the reaction kettle (1) passes through a first sealed furnace head (2) of the externally heated rotary drying furnace (3) to reach the inside of the externally heated rotary drying furnace (3), a plurality of burners (16) are provided at the bottom of the externally heated rotary drying furnace (3), the top of the first sealed furnace head (2) is connected to an exhaust pipe (4), the discharge end of the externally heated rotary drying furnace (3) is connected to a first sealed unloading tower (7), and the The discharge port of the first sealed unloading tower (7) is connected to a screw feeder (8), and the auger shaft in the screw feeder (8) transfers the primary dried electrode material to the direction of the externally heated vacuum rotary kiln (10). The externally heated vacuum rotary kiln (10) is connected to an external vacuum system (15). The discharge end of the externally heated vacuum rotary kiln (10) is connected to a second sealed unloading tower (11). Both the first sealed unloading tower (7) and the second sealed unloading tower (11) are provided with sealed unloading valves.
2. A drying device for drying electrode materials according to claim 1, characterized in that: The outlet end of the air outlet pipe (4) is connected to a scrubbing tower (5), and the outside of the scrubbing tower (5) is connected to a centrifugal fan (6).
3. A drying device for drying electrode materials according to claim 2, characterized in that: The reaction kettle (1) is connected to the externally heated rotary drying furnace (3) via a feed pipe (17). The feed pipe (17) is provided with a plurality of air outlet holes at the upper end of the portion entering the inner side of the first sealed furnace head (2).
4. A drying device for drying electrode materials according to claim 3, characterized in that: The feed pipe (17) is arranged to be inclined in the direction of the external heating rotary drying furnace (3).
5. A drying device for drying electrode materials according to claim 1, characterized in that: The externally heated vacuum rotary kiln (10) is provided with a resistance heating furnace chamber.
6. A drying device for drying electrode materials according to any one of claims 1 to 5, characterized in that: The second sealed furnace head (9) is externally connected to a first exhaust passage (12), and the first exhaust passage (12) is connected to a vacuum system (15).
7. A drying device for drying electrode materials according to claim 6, characterized in that: The second sealed unloading tower (11) is externally connected to a second air extraction channel (13), and the second air extraction channel (13) is connected to a vacuum system (15).
8. A drying device for drying electrode materials according to claim 7, characterized in that: The first air extraction channel (12) and the second air extraction channel (13) are connected to an air extraction main pipe (14), and the air extraction main pipe (14) is connected to the vacuum system (15).