CN217979756U

CN217979756U - Continuous heating furnace for producing anode and cathode materials of energy storage device

Info

Publication number: CN217979756U
Application number: CN202222234992.7U
Authority: CN
Inventors: 谢艳
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2022-12-06
Anticipated expiration: 2032-08-24

Abstract

The utility model discloses a continuous heating furnace for producing positive and negative electrode materials of an energy storage device in the field of energy storage device material processing equipment, wherein a feeding system and a furnace tube are installed on a frame, a heat preservation layer is wrapped on the outer end of the furnace tube, medium-high frequency heaters are distributed on the cavity wall of the furnace tube, a spiral stirring structure is arranged in the furnace tube, a tail end of the furnace tube is provided with a tail gas discharge end in an upward direction and is connected with a cooling discharge box downwards; the outer side of the furnace tube is provided with a nitrogen system and a cooling circulating water system, and the feed end of the furnace tube is connected with the nitrogen system. The utility model can realize continuous production, improve efficiency, reduce energy consumption, improve productivity and make operation simpler; heating by adopting a medium-high frequency heater to enable the temperature to reach 1500-2000 ℃; a cooling circulating water system is added, so that the cooling time of the material is reduced; set up spiral stirring structure and make the intraductal material of stove can be stirred, the reaction is more even.

Description

Continuous heating furnace for producing anode and cathode materials of energy storage device

Technical Field

The utility model relates to an energy storage device material processing equipment field specifically is a continuous type heating furnace is used in energy storage device's positive negative pole material production.

Background

Energy storage devices such as lithium ion battery, ultracapacitor system have extensively been applicable to each field to the annual increase volume is exponential formula to increase, and the production of the positive negative pole material of main component of energy storage devices such as present lithium ion battery, ultracapacitor system all uses intermittent type formula heating reacting furnace, and productivity is lower like this, the energy consumption is higher, the cost is higher and the temperature is inhomogeneous, the reaction is inhomogeneous, the relatively poor scheduling problem of production scene, the utility model provides a continuous type heating just can solve these problems for the positive negative pole material production of energy storage device.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a continuous heating furnace is used in positive negative pole material production of energy storage device to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a continuous heating furnace for producing positive and negative electrode materials of an energy storage device is characterized in that a feeding system and a furnace tube are mounted on a rack, a heat preservation layer wraps the outer end of the furnace tube, the discharging end of the feeding system is connected with the feeding end of the furnace tube, a medium-high frequency heater is distributed on the cavity wall of the furnace tube, a spiral stirring structure is arranged inside the furnace tube, a tail end of the furnace tube is provided with a tail gas discharging end in an upward direction and is connected with a cooling discharging box downwards, a condensate water inflow layer is arranged on the outer layer of the cooling discharging box, condensate water cools and exchanges heat with the positive and negative electrode materials in the cooling discharging box through the condensate water inflow layer, and a nitrogen inlet is further formed in the cooling discharging box, so that oxygen entering in the cooling process is isolated, and the processed positive and negative electrode materials are prevented from being oxidized; and a nitrogen system and a cooling circulating water system are arranged outside the furnace tube, and the feed end of the furnace tube is connected with the nitrogen system.

Preferably, the nitrogen system enters the inner side of the furnace tube from the tube wall of the furnace tube to the feeding end of the furnace tube, the nitrogen system is also connected with a nitrogen inlet of the cooling discharge box, and nitrogen enters the device from two directions, so that the performance reduction of a finished product caused by oxidation of positive and negative electrode materials in the heating and cooling processes can be prevented.

Preferably, the cooling circulating water system is connected with a water inlet end below the cooling discharge box and flows out from a water outlet end above the cooling discharge box, and a spiral stirring structure is arranged inside the cooling discharge box, so that the positive and negative electrode materials can be cooled and extruded conveniently.

Preferably, the tail end of the rotating shaft of the spiral stirring structure faces the outside of the furnace tube and is arranged on a bearing with a seat, the bearing with the seat is connected with the tail end of the rotating shaft through a right coupler, and a heat insulation plate is additionally arranged between the right coupler and the tail end of the rotating shaft; the axis of rotation front end links to each other with the bearing fixing base, be equipped with left shaft coupling between bearing fixing base and the axis of rotation front end, improve the security of axis of rotation installation.

Preferably, the seated bearing is mounted on a sliding fixed seat, and the sliding fixed seat is set on the guide rail fixed seat.

Preferably, the axis of rotation is terminal to be worn out the periphery of heat preservation is equipped with the gland, it is sealed that the gland inwards is filled with the heat preservation cotton, strengthens the heat preservation effect of heat preservation, also can reduce the influence of heat preservation to the axis of rotation simultaneously.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the continuous production can be realized, and the problems of low efficiency, high energy consumption, low capacity, complex operation, poor production scene and the like of a high-temperature intermittent furnace in the prior art are solved;

2. a spiral type spiral stirring structure is arranged to stir and push the anode and cathode materials, so that the problems that the anode and cathode materials cannot be stirred, the reaction is not uniform enough, the material heating temperature is not uniform and the like caused by the original intermittent processing modes of a high-temperature intermittent furnace, a tunnel kiln and the like are solved;

3. the medium-high frequency heater is adopted for heating, so that the problem that the material temperature of equipment such as a medium-high temperature intermittent furnace, a tunnel kiln and the like in the prior art is difficult to reach 1500-2000 ℃ is solved;

4. the cooling circulating water system and the cooling discharge box are added, so that the problems that in the prior art, equipment such as a high-temperature intermittent furnace, a tunnel kiln and the like needs a long time to cool after being heated, and the efficiency is low are solved.

Of course, it is not necessary for any particular product to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic view of the overall structure of the present invention;

fig. 2 is a schematic view of a cross section of the relationship between the middle furnace tube and the heat-insulating layer.

In the drawings, the reference numbers indicate the following list of parts: 1-a feeding system, 2-a tail gas discharge end, 3-a cooling discharge box, 4-an insulating layer, 5-a furnace tube, 6-a spiral stirring structure, 7-a medium-high frequency heater, 8-a cooling circulating water system, 9-a sliding fixed seat, 10-a guide rail fixed seat, 11-a bearing with a seat, 12-a right coupler, 13-a heat insulation plate, 14-a gland, 15-an insulating cotton seal, 16-a nitrogen system, 17-a bearing fixed seat, 18-a left coupler and 19-a rack.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

Referring to fig. 1-2, the present invention provides a technical solution: a continuous heating furnace for producing positive and negative electrode materials of an energy storage device is characterized in that a feeding system 1 and a furnace tube 5 are mounted on a rack 19, the outer end of the furnace tube 5 is wrapped with a heat preservation layer 4, the discharging end of the feeding system 1 is connected with the feeding end of the furnace tube 5, a medium-high frequency heater 7 is distributed on the cavity wall of the furnace tube 5, a spiral stirring structure 6 is arranged inside the furnace tube 5, the tail end of the furnace tube 5 is provided with a tail gas discharging end 2 in the upward direction and is connected with a cooling discharging box 3 in the downward direction, the outer layer of the cooling discharging box 3 is provided with a condensate water inflow layer, the condensate water flows into the layer to cool and exchange heat for the positive and negative electrode materials in the cooling discharging box 3, and the cooling discharging box 3 is also provided with a nitrogen inlet, so that oxygen entering in the cooling process can be isolated, and the processed positive and negative electrode materials can be prevented from being oxidized; the outer side of the furnace tube 5 is provided with a nitrogen system 16 and a cooling circulating water system 8, and the feed end of the furnace tube 5 is connected with the nitrogen system 16.

Furthermore, the nitrogen system 16 enters the inner side of the furnace tube 5 from the tube wall of the furnace tube 5 to the feed end of the furnace tube 5, the nitrogen system 16 is also connected with the nitrogen inlet of the cooling discharge box 3, and nitrogen enters the device from two directions, so that the performance reduction of a finished product caused by the oxidation of anode and cathode materials in the heating and cooling processes can be prevented.

Furthermore, the cooling circulation water system 8 is connected with the water inlet end below the cooling discharge box 3 and flows out from the water outlet end above the cooling discharge box 3, and the spiral stirring structure 6 is also arranged inside the cooling discharge box 3, so that the anode and cathode materials can be cooled and extruded conveniently.

Furthermore, the tail end of a rotating shaft of the spiral stirring structure 6 faces the outside of the furnace tube 5 and is arranged on a bearing with a seat 11, the bearing with a seat 11 is connected with the tail end of the rotating shaft through a right coupler 12, and a heat insulation plate 13 is additionally arranged between the right coupler 12 and the tail end of the rotating shaft; the axis of rotation front end links to each other with bearing fixing base 17, is equipped with left shaft coupling 18 between bearing fixing base 17 and the axis of rotation front end, and then improves the security of axis of rotation installation.

Further, the seated bearing 11 is installed on the sliding fixing seat 9, and the sliding fixing seat 9 is set on the guide rail fixing seat 10.

Further, the periphery that heat preservation 4 was worn out to the axis of rotation end is equipped with gland 14, and gland 14 is filled inwards has the cotton sealed 15 of heat preservation, strengthens the heat preservation effect of heat preservation, also can reduce the influence of heat preservation to the axis of rotation simultaneously.

In practical use, the anode and cathode materials of the lithium ion battery and the super capacitor enter the furnace tube 5 through the feeding system 1, wherein the feeding system 1 is a feeding system 1 which can feed materials and drive the materials to move forwards through a stirring shaft in the prior art, therefore, after the material is fed from the feed end, the positive and negative electrode materials of the lithium ion battery and the super capacitor can be led into the furnace tube 5 by the driving of the stirring shaft, the furnace tube 5 can be a phi 100-300 metal tube or a graphite tube or a combination of the two, when the anode and cathode materials enter the furnace tube 5, the furnace tube 5 moves forwards under the pushing of a spiral stirring structure 6, the spiral stirring structure 6 (belonging to a common spiral stirring shaft structure) can be made of metal or nonmetal materials such as metal doped with graphite, besides, a medium-high frequency heater 7 is distributed in the middle area of the furnace tube 5, the temperature in the furnace tube 5 can be heated to 600-2000 ℃, nitrogen is introduced into the nitrogen system 16 in the reaction process, two pipelines are arranged in the nitrogen system 16, one of the pipelines is arranged along the tube wall to the feeding side of the furnace tube 5 and inside the furnace tube 5 for preheating nitrogen, and the nitrogen gas makes the anode and cathode materials in the furnace tube 5 be in anaerobic condition at high temperature to prevent burning, the reacted anode and cathode materials enter the cooling discharge box 3, the condensed water in the cooling discharge box is sent to the surface layer of the cooling discharge box 3 through the cooling circulating water system 8, enters from the lower water inlet end, exchanges heat and then flows out from the upper water outlet end, meanwhile, nitrogen gas is required to be introduced into the cooling discharge box 3 to prevent the anode and cathode materials from being oxidized in the cooling process, so as to ensure the cooling environment, and the redundant reaction tail gas generated in the heating process is discharged from a tail gas discharge end 2 and is subjected to purification treatment, and the required material is finally obtained after reaction and cooling.

In the above-described flow, examples of the positive electrode material that can be used in the present apparatus include: the raw materials needed by the anode are proportioned and then put into the continuous heating furnace of the device, and the anode material is prepared by reacting at 800-1200 ℃ according to the process flow.

In the above-described flow, examples of the positive electrode material that can be used in the present apparatus include: a silicon carbon cathode, a hard carbon cathode and a soft carbon cathode; wherein:

silicon carbon negative electrode: selecting a silicon-rich carbonized material (such as rice hulls and the like) with the ratio of about 300m & lt 2 & gt/g, adding a certain proportion of Mg powder, putting into a continuous heating furnace of the invention, and reacting at 600-1200 ℃ according to the process flow to prepare the silicon-carbon negative electrode material. Or mixing artificial graphite, nano silicon, coal tar pitch, phenolic resin and the like according to a certain proportion, shaping, putting into a continuous heating furnace of the invention, and reacting at 600-1200 ℃ according to the process flow to prepare the silicon-carbon negative electrode material.

Hard carbon negative electrode: phenolic resin or coconut shell-based carbonized material is selected and put into the continuous heating furnace of the device, and the hard carbon cathode material is prepared by reaction at 1000-2000 ℃ according to the process flow;

soft carbon negative electrode: selecting selected petroleum coke or coal-based coke, and the like, putting the selected petroleum coke or coal-based coke into the continuous heating furnace of the device, and reacting at 1000-2000 ℃ according to the process flow to prepare the soft carbon negative electrode material.

Furthermore, the method is simple. The continuous heating furnace of the device can be used for manufacturing the anode and cathode materials used by the super capacitor, and the specific preparation method comprises the following steps: after pretreatment of coke or carbonized materials and KOH at 200-400 ℃, putting the pretreated coke or carbonized materials and KOH into a continuous heating furnace of the patent, and preparing the anode and cathode electrode materials for the supercapacitor at 600-1000 ℃ according to the process flow.

In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the present invention disclosed above are intended to aid in the description of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise forms disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and its practical applications, to thereby enable others skilled in the art to best understand the invention for and utilize the invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A continuous heating furnace for producing anode and cathode materials of an energy storage device is characterized in that: the cooling device is characterized in that a feeding system (1) and a furnace tube (5) are installed on a rack (19), a heat-insulating layer (4) wraps the outer end of the furnace tube (5), the discharging end of the feeding system (1) is connected with the feeding end of the furnace tube (5), a medium-high frequency heater (7) is distributed on the cavity wall of the cavity of the furnace tube (5), a spiral stirring structure (6) is arranged inside the furnace tube (5), a tail end of the furnace tube (5) is provided with a tail gas discharging end (2) in an upward direction and is connected with a cooling discharging box (3) in a downward direction, a condensed water inflow layer is arranged on the outer layer of the cooling discharging box (3), and condensed water flows through the condensed water inflow layer to cool and exchange heat positive and negative electrode materials in the cooling discharging box (3), and a nitrogen inlet is further arranged on the cooling discharging box (3) to facilitate isolation of oxygen entering in a cooling process and prevent the positive and negative electrode materials from being oxidized; the outside of the furnace tube (5) is provided with a nitrogen system (16) and a cooling circulating water system (8), and the feed end of the furnace tube (5) is connected with the nitrogen system (16).

2. The continuous heating furnace for producing the positive and negative electrode materials of the energy storage device according to claim 1, wherein: the nitrogen system (16) enters the inner side of the furnace tube (5) from the tube wall of the furnace tube (5) to the feeding end of the furnace tube (5), and the nitrogen system (16) is also connected with a nitrogen inlet of the cooling discharge box (3).

3. The continuous heating furnace for producing the positive and negative electrode materials of the energy storage device according to claim 1, wherein: the cooling circulating water system (8) is connected with a water inlet end below the cooling discharge box (3) and then flows out from a water outlet end above the cooling discharge box (3), and a spiral stirring structure (6) is also arranged inside the cooling discharge box (3).

4. The continuous heating furnace for producing the positive and negative electrode materials of the energy storage device according to any one of claims 1 to 3, wherein: the tail end of a rotating shaft of the spiral stirring structure (6) faces the outside of the furnace tube (5) and is arranged on a bearing with a seat (11), the bearing with the seat (11) is connected with the tail end of the rotating shaft through a right coupler (12), and a heat insulation plate (13) is additionally arranged between the right coupler (12) and the tail end of the rotating shaft; the axis of rotation front end links to each other with bearing fixing base (17), be equipped with left shaft coupling (18) between bearing fixing base (17) and the axis of rotation front end.

5. The continuous heating furnace for producing the positive and negative electrode materials of the energy storage device according to claim 4, wherein: the belt seat bearing (11) is installed on the sliding fixing seat (9), and the sliding fixing seat (9) is set on the guide rail fixing seat (10).

6. The continuous heating furnace for producing the positive and negative electrode materials of the energy storage device according to claim 5, wherein: the tail end of the rotating shaft penetrates out of the periphery of the heat-insulating layer (4) to be provided with a gland (14), and the gland (14) is filled with heat-insulating cotton seal (15) inwards.