Rotary high-temperature carbon tube furnace
By introducing a double rocker mechanism and a multi-layer insulation structure into the high-temperature carbon tube furnace, the problem of uneven heating of the existing high-temperature carbon tube furnace is solved, and the effect and efficiency of graphite purification are significantly improved.
Patent Information
- Application Number
- CN202421784030.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-26
- Publication Date
- 2025-05-13
- Estimated Expiration
- 2034-07-26
AI Technical Summary
The existing high-temperature carbon tube furnace cannot achieve uniform heating, resulting in poor graphite purification effect.
A rotary high-temperature carbon tube furnace is designed, and a dual rocker mechanism is used to realize the axial rotation of the carbon tube, combining the carbon black filling layer and the asbestos insulation layer to ensure heating uniformity and insulation effect.
Through the axial rotation of the carbon tube and the multi-layer insulation structure, uniform high-temperature purification of graphite powder is achieved, the purification effect is improved, and the impurities are discharged in time after gasification.
Smart Images
Figure CN222865513U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of graphite purification equipment, in particular to a rotary high-temperature carbon tube furnace. Background Art
[0002] Graphite is a crystalline carbon widely found in nature. The purified high-purity graphite is widely used in metallurgy, chemical industry, electronics, new energy vehicles, medical equipment, nuclear energy, military industry, aerospace and other fields due to its excellent high temperature resistance, electrical conductivity, thermal conductivity, lubricity, corrosion resistance, plasticity, radiation resistance and thermal shock resistance. The existing graphite purification methods include flotation, acid-base method, hydrofluoric acid method, chlorination baking method and high-temperature method. However, the purity of the product obtained by flotation is low; chemical methods such as acid-base method, hydrofluoric acid method and chlorination baking method are easy to corrode equipment and pollute the environment, and high-purity graphite cannot be obtained. Therefore, high-temperature method is often used to prepare high-purity graphite in industrial production.
[0003] The high-temperature method of purifying graphite requires the use of corresponding purification equipment to ensure sufficient heating and purification of the graphite raw materials. The effect of graphite being heated and purified depends largely on the heating performance of the purification equipment. For a long time, the high-temperature purification of graphite has been mainly handled using the Acheson furnace. The Acheson furnace uses arc heating to generate high temperature through the arc formed between the graphite electrodes. However, the intermittent operation mode of the Acheson furnace limits its working efficiency, and the operation is complicated, which has limitations in large-scale production. In recent years, high-temperature carbon tube furnaces have gradually been widely used in high-temperature purification of graphite. The high-temperature carbon tube furnace uses resistance heating or induction heating, which can provide a continuous operation mode and significantly improve production efficiency. At the same time, the operation of the high-temperature carbon tube furnace is relatively simple and easy to control. The heating temperature can reach 2800℃ and can work continuously for a long time. However, the traditional high-temperature carbon tube furnace cannot achieve uniform heating, resulting in poor graphite purification effect.
[0004] In summary, it is necessary to provide a rotary high-temperature carbon tube furnace to solve the problem that the existing high-temperature carbon tube furnace cannot achieve uniform heating, resulting in poor graphite purification effect. Utility Model Content
[0005] The utility model aims to provide a rotary high temperature carbon tube furnace, and the specific technical scheme is as follows:
[0006] A rotary high-temperature carbon tube furnace comprises a furnace body, a carbon tube, a heating component and a double rocker mechanism;
[0007] The carbon tube is arranged to penetrate the furnace body; a feed port is arranged at one end of the carbon tube, and a discharge port is arranged at the other end of the carbon tube;
[0008] The heating component is connected to the carbon tube;
[0009] The double rocker mechanism includes a first rocker, a second rocker, a connecting rod and a driving member; the first rocker is connected to one end of the carbon tube; the second rocker is connected to the other end of the carbon tube; one end of the connecting rod is connected to an end of the first rocker away from the carbon tube, and the other end of the connecting rod is connected to an end of the second rocker away from the carbon tube; the output end of the driving member is connected to the connecting rod.
[0010] Optionally, the rotary high-temperature carbon tube furnace further includes a carbon black filling layer; the carbon black filling layer is arranged in the furnace body and is located between the inner wall of the furnace body and the outer wall of the carbon tube.
[0011] Optionally, the rotary high-temperature carbon tube furnace further includes a carbon black filling port arranged on the furnace body.
[0012] Optionally, the rotary high-temperature carbon tube furnace further includes an asbestos insulation layer; the asbestos insulation layer is arranged in the furnace body and between the inner wall of the furnace body and the carbon black filling layer.
[0013] Optionally, the number of layers of the asbestos insulation layer is 5-10 layers.
[0014] Optionally, the rotary high-temperature carbon tube furnace also includes a protective gas inlet and a protective gas outlet; the protective gas inlet is arranged on the carbon tube and is close to the discharge port on the carbon tube; the protective gas outlet is arranged on the carbon tube and is close to the feed port on the carbon tube; the protective gas inlet is connected to the protective gas outlet through the carbon tube.
[0015] Optionally, the rotary high-temperature carbon tube furnace further includes a first opening and closing plate arranged on the feed port and a second opening and closing plate arranged on the discharge port.
[0016] Optionally, the rotary high-temperature carbon tube furnace further includes a support frame; the support frame is connected to the bottom of the furnace body.
[0017] Optionally, the heating assembly includes a first electrode copper bar, a second electrode copper bar and a transformer; the first electrode copper bar and the second electrode copper bar are respectively connected to two ends of the carbon tube; and the ends of the first electrode copper bar and the second electrode copper bar away from the carbon tube are both connected to the transformer.
[0018] Optionally, the rotary high-temperature carbon tube furnace further includes a graphite boat for holding graphite powder to be purified, and the number of the graphite boats is multiple and they are sequentially arranged inside the carbon tube along the length direction of the carbon tube.
[0019] Optionally, the rotary high-temperature carbon tube furnace further includes a PLC controller; the PLC controller is connected to the driving component and the transformer.
[0020] The application of the technical solution of the utility model has at least the following beneficial effects:
[0021] The utility model provides a rotary high-temperature carbon tube furnace, in which the graphite boats containing the graphite powder to be purified are sequentially loaded into the carbon tube through the feed port, and then taken out sequentially through the discharge port after high-temperature purification; a heating component is used to heat the carbon tube to achieve high-temperature purification of the graphite powder; a double rocker mechanism is used to achieve axial rotation of the carbon tube, which, on the one hand, facilitates the mixing of the graphite powder and uniform high-temperature purification, and on the other hand, facilitates the timely discharge of low-melting-point impurities in the graphite powder after high-temperature gasification, thereby improving the purification effect. Therefore, the utility model solves the problem that the existing high-temperature carbon tube furnace cannot achieve uniform heating, resulting in poor graphite purification effect.
[0022] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0024] Figure 1 This is a structural schematic diagram of a rotary high-temperature carbon tube furnace in an embodiment of the utility model;
[0025] Figure 2 yes Figure 1 Cross-section view in the AA direction;
[0026] Figure 3 yes Figure 1 Schematic diagram of the structure of the graphite boat;
[0027] Among them, 1. furnace body, 1.1. carbon black filling port, 2. carbon tube, 2.1. protective gas inlet, 2.2. protective gas outlet, 3. graphite boat, 4. first opening and closing plate, 5. second opening and closing plate, 6. first rocker, 7. second rocker, 8. driving part, 9. carbon black filling layer, 10. asbestos insulation layer, 11. support frame, 12. first electrode copper busbar, 13. second electrode copper busbar, 14. transformer. DETAILED DESCRIPTION
[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the utility model.
[0029] Example:
[0030] See also Figure 1-Figure 3 , a rotary high temperature carbon tube furnace, comprising a furnace body 1, a carbon tube 2, a heating assembly and a double rocker mechanism;
[0031] The carbon tube 2 is arranged to penetrate the furnace body 1; a feed port is arranged at one end of the carbon tube 2, and a discharge port is arranged at the other end of the carbon tube 2; the rotary high-temperature carbon tube furnace also includes a graphite boat 3 for holding graphite powder to be purified (the graphite boat 3 is a cylindrical structure, and detachable sealing covers are arranged at both ends of the cylinder, and air holes are arranged on the cylinder), and the number of the graphite boats 3 is multiple, and they are arranged in the carbon tube 2 in sequence along the length direction of the carbon tube 2; specifically, the graphite boats 3 holding the graphite powder to be purified are sequentially loaded into the carbon tube 2 through the feed port; the graphite powder is purified at high temperature in the carbon tube 2 and then taken out in sequence through the discharge port along with the graphite boat 3; a first opening and closing plate 4 is arranged on the feed port, and a second opening and closing plate 5 is arranged on the discharge port, so as to facilitate timely closing of the feed port and the discharge port after feeding and discharging, so as to avoid heat loss in the carbon tube 2;
[0032] The heating component is connected to the carbon tube 2 and is used to provide heat for the carbon tube 2 to achieve high-temperature purification of graphite powder;
[0033] The double rocker mechanism includes a first rocker 6, a second rocker 7, a connecting rod and a driving member 8 (specifically a servo motor or a stepping motor); the first rocker 6 is connected to one end of the carbon tube 2; the second rocker 7 is connected to the other end of the carbon tube 2; one end of the connecting rod is connected to the end of the first rocker 6 away from the carbon tube 2, and the other end of the connecting rod is connected to the end of the second rocker 7 away from the carbon tube 2; the output end of the driving member 8 is connected to the connecting rod. The double rocker mechanism is used to realize the axial rotation of the carbon tube 2. On the one hand, it is convenient for the graphite powder to be mixed and evenly purified at high temperature. On the other hand, it is convenient for the impurities in the graphite powder to be discharged in time after high-temperature gasification, thereby improving the purification effect.
[0034] The rotary high-temperature carbon tube furnace also includes a carbon black filling layer 9; the carbon black filling layer 9 is arranged in the furnace body 1 and is located between the inner wall of the furnace body 1 and the outer wall of the carbon tube 2, so as to achieve heat preservation of the carbon tube 2 and reduce the entry of oxygen into the carbon tube 2, thereby ensuring the high-temperature purification effect of the graphite powder.
[0035] The rotary high temperature carbon tube furnace further comprises a carbon black filling port 1.1 arranged on the furnace body 1 for easy filling of carbon black; wherein one or more carbon black filling ports 1.1 can be provided as required, and specifically two are provided in the present embodiment.
[0036] The rotary high-temperature carbon tube furnace also includes an asbestos insulation layer 10; the asbestos insulation layer 10 is arranged in the furnace body 1 and is located between the inner wall of the furnace body 1 and the carbon black filling layer 9 to reduce heat loss and maintain a high temperature environment in the furnace body 1.
[0037] The number of layers of the asbestos insulation layer 10 is 5-10, which can effectively reduce heat loss and maintain a high temperature environment in the furnace body 1. When the asbestos insulation layer 10 exceeds 10 layers, the improvement of the insulation performance is not obvious. In this embodiment, the asbestos insulation layer 10 is specifically provided with eight layers.
[0038] The rotary high-temperature carbon tube furnace also includes a protective gas inlet 2.1 and a protective gas outlet 2.2; the protective gas inlet 2.1 is arranged on the carbon tube 2 and is arranged close to the discharge port on the carbon tube 2; the protective gas outlet 2.2 is arranged on the carbon tube 2 and is arranged close to the feed port on the carbon tube 2; the protective gas inlet 2.1 is connected to the protective gas outlet 2.2 through the carbon tube 2. The protective gas used in this embodiment is nitrogen, and the flow direction of the nitrogen from the protective gas inlet 2.1 to the protective gas outlet 2.2 is opposite to the moving direction of the graphite powder in the carbon tube 2, which is convenient for forming convection to timely remove the gas generated after the low melting point impurities in the graphite powder are gasified, thereby improving the purification effect.
[0039] The rotary high-temperature carbon tube furnace further includes a support frame 11 ; the support frame 11 is connected to the bottom of the furnace body 1 to achieve the effect of supporting and fixing the furnace body 1 .
[0040] The heating assembly includes a first electrode copper bar 12, a second electrode copper bar 13 and a transformer 14; the first electrode copper bar 12 and the second electrode copper bar 13 are respectively connected to the two ends of the carbon tube 2; the first electrode copper bar 12 and the second electrode copper bar 13 are connected to the transformer 14 at one end away from the carbon tube 2, so as to improve the heating performance of the carbon tube 2.
[0041] The rotary high-temperature carbon tube furnace further includes a PLC controller (not shown in the figure); the PLC controller is connected to the driving member 8 and the transformer 14 to facilitate intelligent operation.
[0042] The operation process of the rotary high temperature carbon tube furnace is as follows:
[0043] First, the first opening and closing plate 4 on the feed port is opened, and the graphite boat 3 containing the graphite powder to be purified is sequentially loaded into the carbon tube 2 through the feed port, and then the first opening and closing plate 4 is closed to reduce the loss of heat energy; the PLC controller is used to control the heating component to heat the carbon tube 2, and at the same time, the PLC controller controls the double rocker mechanism to realize the axial rotation of the carbon tube 2. When rotating, it first rotates 90° to one side of the carbon tube 2, and then rotates 90° to the other side of the carbon tube 2, so as to realize uniform high-temperature purification of the graphite powder;
[0044] After high-temperature purification, the second opening and closing plate 5 on the discharge port is opened, and the graphite powder after high-temperature purification is taken out through the discharge port along with the graphite boat 3. At the same time, the first opening and closing plate 4 on the feed port is opened, and the graphite boat 3 containing the graphite powder to be purified is loaded into the carbon tube 2 through the feed port. The boat loading and boat unloading operations are completed at the same time, and are performed within the same time interval to ensure the continuous operation of the rotary high-temperature carbon tube furnace.
[0045] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.
Claims
1. A rotary high temperature carbon tube furnace, characterized in that: It comprises a furnace body (1), a carbon tube (2), a heating component and a double rocker mechanism; The carbon tube (2) is arranged to penetrate the furnace body (1); a feed port is arranged at one end of the carbon tube (2), and a discharge port is arranged at the other end of the carbon tube (2); The heating component is connected to the carbon tube (2); The double rocker mechanism comprises a first rocker (6), a second rocker (7), a connecting rod and a driving member (8); the first rocker (6) is connected to one end of the carbon tube (2); the second rocker (7) is connected to the other end of the carbon tube (2); one end of the connecting rod is connected to an end of the first rocker (6) away from the carbon tube (2), and the other end of the connecting rod is connected to an end of the second rocker (7) away from the carbon tube (2); the output end of the driving member (8) is connected to the connecting rod.
2. The rotary high temperature carbon tube furnace according to claim 1, characterized in that: It also comprises a carbon black filling layer (9); the carbon black filling layer (9) is arranged in the furnace body (1) and is located between the inner wall of the furnace body (1) and the outer wall of the carbon tube (2).
3. The rotary high temperature carbon tube furnace according to claim 2, characterized in that: It also includes a carbon black filling port (1.1) arranged on the furnace body (1).
4. The rotary high temperature carbon tube furnace according to claim 2, characterized in that: It also comprises an asbestos insulation layer (10); the asbestos insulation layer (10) is arranged in the furnace body (1) and is located between the inner wall of the furnace body (1) and the carbon black filling layer (9).
5. The rotary high temperature carbon tube furnace according to claim 4, characterized in that: The number of layers of the asbestos thermal insulation layer (10) is 5-10.
6. The rotary high temperature carbon tube furnace according to any one of claims 1 to 5, characterized in that: It also comprises a protective gas inlet (2.1) and a protective gas outlet (2.2); the protective gas inlet (2.1) is arranged on the carbon tube (2) and is arranged close to the discharge port on the carbon tube (2); the protective gas outlet (2.2) is arranged on the carbon tube (2) and is arranged close to the feed port on the carbon tube (2); the protective gas inlet (2.1) is connected to the protective gas outlet (2.2) through the carbon tube (2); It also includes a first opening and closing plate (4) arranged on the feed port and a second opening and closing plate (5) arranged on the discharge port.
7. The rotary high temperature carbon tube furnace according to claim 6, characterized in that: It also comprises a support frame (11); the support frame (11) is connected to the bottom of the furnace body (1).
8. The rotary high temperature carbon tube furnace according to claim 6, characterized in that: The heating component comprises a first electrode copper bar (12), a second electrode copper bar (13) and a transformer (14); the first electrode copper bar (12) and the second electrode copper bar (13) are respectively connected to two ends of the carbon tube (2); and the ends of the first electrode copper bar (12) and the second electrode copper bar (13) away from the carbon tube (2) are both connected to the transformer (14).
9. The rotary high temperature carbon tube furnace according to claim 6, characterized in that: It also comprises a graphite boat (3) for containing graphite powder to be purified. The number of the graphite boats (3) is plural and they are arranged in sequence inside the carbon tube (2) along the length direction of the carbon tube (2).
10. The rotary high temperature carbon tube furnace according to claim 8, characterized in that: It also includes a PLC controller; the PLC controller is connected to the driving element (8) and the transformer (14).