A continuous purification furnace

Abstract

This utility model discloses a continuous purification furnace, belonging to the technical field of purification furnaces. The continuous purification furnace includes a first purification mechanism and a second purification mechanism; the first purification mechanism is located above the second purification mechanism, and from left to right, the first purification mechanism includes: a first feeding chamber, a first transition chamber, a first heating section, a second transition chamber, and a first discharge chamber; the second purification mechanism, from left to right, includes: a second discharge chamber, a first transition chamber, a second heating section, a second transition chamber, and a second feeding chamber; the lower part of the first heating section and the upper part of the second heating section are adjacent and a heat insulation component is provided between them. The continuous purification furnace proposed in this utility model significantly reduces the material consumption per ton of equipment.

Description

Technical Field

[0001] This utility model relates to the field of purification furnace technology, and in particular to a continuous purification furnace. Background Technology

[0002] Continuous purification furnaces are the core equipment for the production of high-purity graphite powder. Compared with traditional batch furnaces such as Atchison furnaces and vacuum purification furnaces, they have advantages such as high output, low energy consumption, and good product consistency.

[0003] Traditional graphite powder purification furnaces employ a pusher-boat type design. The main body of this type of furnace typically consists of a feeding chamber, heating section, cooling section, and discharging chamber. The powder is placed in a crucible and fed into the furnace from one end. After heating, holding, and cooling, it exits from the other end. The heating process for both the crucible and the powder is a heat storage process, while the cooling process is a heat release process. During cooling, the heat is carried away by cooling water, and there is no waste heat recovery, resulting in high energy consumption per ton of material.

[0004] Traditional continuous purification furnaces have 1-2 waste discharge ports in the high-temperature zone, through which by-products are discharged outside the furnace. However, during continuous purification, due to the variety and complexity of by-products, physical and chemical reactions occur between them, causing by-products to clump together and block the waste discharge ports, seriously affecting the safe and reliable operation of the equipment. Utility Model Content

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose a continuous purification furnace to solve the technical problem of high energy consumption in existing continuous purification furnaces.

[0006] To achieve the above-mentioned technical objectives, the present invention provides a continuous purification furnace, comprising a first purification mechanism and a second purification mechanism; the first purification mechanism is located above the second purification mechanism, and the first purification mechanism includes, from left to right, a first feeding chamber, a first transition chamber, a first heating section, a second transition chamber, and a first discharge chamber; the second purification mechanism includes, from left to right, a second discharge chamber, a first transition chamber, a second heating section, a second transition chamber, and a second feeding chamber; the lower part of the first heating section and the upper part of the second heating section are adjacent to each other and a heat insulation member is provided between them.

[0007] In any embodiment, the first heating section includes a first heating element and a first furnace chamber; the first heating element is disposed on the side wall of the first furnace chamber; the second heating section includes a second heating element and a second furnace chamber, the second heating element is disposed on the side wall of the second furnace chamber, and the heat insulation member is disposed between the first furnace chamber and the second furnace chamber.

[0008] In any embodiment, the first heating section is provided with a first waste pipe, which extends through the first furnace chamber to the outside of the first furnace chamber, and the second heating section is provided with a second waste pipe, which extends through the second furnace chamber to the outside of the second furnace chamber.

[0009] In any embodiment, the first waste discharge pipe includes a first sub-waste discharge pipe and a second sub-waste discharge pipe. The first sub-waste discharge pipe and the second sub-waste discharge pipe are respectively disposed on the side wall of the first furnace near the feed end and the discharge end of the first furnace. The temperature inside the first furnace where the first sub-waste discharge pipe is located is 1400-2000℃, and the temperature inside the first furnace where the second sub-waste discharge pipe is located is 2500-2600℃.

[0010] In any embodiment, the second waste discharge pipe includes a third sub-waste discharge pipe and a fourth sub-waste discharge pipe; the third sub-waste discharge pipe and the fourth sub-waste discharge pipe are respectively disposed on the side wall of the second furnace near the feed end and the discharge end of the second furnace. The temperature inside the second furnace where the third sub-waste discharge pipe is located is 1400-2000℃, and the temperature inside the second furnace where the fourth sub-waste discharge pipe is located is 2500-2600℃.

[0011] In any embodiment, the heat insulation element is a heat insulation board.

[0012] In any embodiment, the heat insulation board is a graphite heat insulation board.

[0013] In any embodiment, a first boat-pushing mechanism is also included, which is located on the left side of the first feeding chamber and is used to push the material entering from the first feeding chamber.

[0014] In any embodiment, a second boat-pushing mechanism is also included, which is located on the right side of the second feeding chamber and is used to push the material entering from the second feeding chamber.

[0015] Compared with the prior art, the beneficial effects of this utility model include: In the continuous purification furnace proposed in this utility model, the feeding directions of the first purification mechanism and the second purification mechanism are opposite. The material of the first purification mechanism passes through the first feeding chamber, the first transition chamber, the first heating section, the second transition chamber, and the first discharge chamber from left to right; the material of the second purification mechanism passes through the second feeding chamber, the second transition chamber, the second heating section, the first transition chamber, and the second discharge chamber from right to left. The first purification mechanism and the second purification mechanism share the first transition chamber and the second transition chamber. The waste heat of the first purification mechanism is used to preheat the material of the second purification mechanism, and the waste heat of the second purification mechanism is used to preheat the material of the first purification mechanism. Moreover, the heat insulation component between the first heating section and the second heating section can reduce the temperature interference caused by heat conduction, realize the recovery and utilization of waste heat of the material, and greatly reduce the consumption per ton of material of the equipment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the continuous purification furnace structure of Embodiment 1 of this utility model.

[0017] Figure 2 This is a schematic diagram of the structure of the first heating section and the second heating section in Embodiment 1 of this utility model.

[0018] Explanation of reference numerals in the attached drawings: 1-First heating section, 2-First furnace chamber, 3-Second furnace chamber, 4-First feeding chamber, 5-First transition chamber, 6-Second transition chamber, 7-First discharge chamber, 8-Second feeding chamber, 9-Second discharge chamber, 10-Material, 11-Material, 12-First boat pushing mechanism, 13-Second boat pushing mechanism; 14-Insulation component; 15-First sub-waste pipe; 16-Second sub-waste pipe; 17-Third sub-waste pipe; 18-Fourth sub-waste pipe; 19-Second heating section; 20-First heating element; 21-Second heating element. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] Example 1

[0021] Combination Figure 1 and 2 This embodiment provides a continuous purification furnace, including a first purification mechanism and a second purification mechanism; the first purification mechanism is located above the second purification mechanism, and the first purification mechanism includes, from left to right, a first feeding chamber 4, a first transition chamber 5, a first heating section 1, a second transition chamber 6 and a first discharge chamber 7; the second purification mechanism includes, from left to right, a second discharge chamber 9, a first transition chamber 5, a second heating section 19, a second transition chamber 6 and a second feeding chamber 8; the first heating section 1 is adjacent to the second heating section 19 below and above, and a heat insulation member 14 is provided between them.

[0022] Based on the above embodiments, in this embodiment, the first heating section 1 includes a first heating element 20 and a first furnace chamber 2; the first heating element 20 is disposed on the side wall of the first furnace chamber 2; the second heating section 19 includes a second heating element 21 and a second furnace chamber 3, the second heating element 21 is disposed on the side wall of the second furnace chamber 3, and a heat insulation member 14 is disposed between the first furnace chamber 2 and the second furnace chamber 3. The first heating element 20 heats the material 10 (including crucible and powder) entering the first heating section 1, the second heating element 21 heats the material 11 (including crucible and powder) entering the second heating section 19, and the heat insulation member 14 is disposed between the first furnace chamber 2 and the second furnace chamber 3, reducing the temperature interference caused by heat conduction between adjacent first furnace chamber 2 and second furnace chamber 3.

[0023] Based on the above embodiments, this embodiment has a first waste pipe on the first heating section 1, which extends through the first furnace chamber 2 to the outside of the first furnace chamber 2. A second waste pipe is provided on the second heating section 19, which extends through the second furnace chamber 3 to the outside of the second furnace chamber 3. The first and second waste pipes allow the waste gas generated during the purification process to be discharged.

[0024] Based on the above embodiments, in this embodiment, the first waste discharge pipe includes a first sub-waste discharge pipe 15 and a second sub-waste discharge pipe 16. The first sub-waste discharge pipe 15 and the second sub-waste discharge pipe 16 are respectively disposed on the side wall of the first furnace 2 near the feed end and the discharge end of the first furnace 2. The temperature inside the first furnace 2 where the first sub-waste discharge pipe 15 is located is 1400-2000℃, and the temperature inside the first furnace 2 where the second sub-waste discharge pipe 16 is located is 2500-2600℃.

[0025] Based on the above embodiments, the second waste discharge pipe in this embodiment includes a third sub-waste discharge pipe 17 and a fourth sub-waste discharge pipe 18; the third sub-waste discharge pipe 17 and the fourth sub-waste discharge pipe 18 are respectively provided on the side wall of the second furnace 3 near the feed end and the discharge end of the second furnace 3. The temperature inside the second furnace 3 where the third sub-waste discharge pipe 17 is located is 1400-2000℃, and the temperature inside the second furnace 3 where the fourth sub-waste discharge pipe 18 is located is 2500-2600℃.

[0026] The first furnace 2 has a first sub-waste pipe 15 and a second sub-waste pipe 16 in the direction of material 10 flow. The second furnace 3 has a third sub-waste pipe 17 and a fourth sub-waste pipe 18 in the length direction of the furnace. The furnace temperature corresponding to the first and third sub-waste pipes 15 and 17 is 1400-2000℃, and the furnace temperature corresponding to the second and fourth sub-waste pipes 16 and 18 is 2500-2600℃. Different impurities will volatilize at different temperatures and be discharged in a timely manner, effectively avoiding the reaction between different types of by-products that could lead to impurity hardening and complexity. The temperature control and setting methods are from existing technology and will not be described in detail here.

[0027] Based on the above embodiments, the heat insulation component 14 in this embodiment is a heat insulation board, which is a graphite heat insulation board. The graphite heat insulation board is obtained by existing hot isostatic pressing technology and can achieve effective heat insulation.

[0028] Based on the above embodiments, this embodiment also includes a first boat-pushing mechanism 12, which is located on the left side of the first feeding chamber 4 and is used to push the material 10 entering from the first feeding chamber 4. The first boat-pushing mechanism 12 pushes the material 10 from the first feeding chamber 4 sequentially to the first transition chamber 5, the first heating section 1, the second transition chamber 6, and the first discharge chamber 7.

[0029] Based on the above embodiments, this embodiment further includes a second boat-pushing mechanism 13, which is located on the right side of the second feeding chamber 8 and is used to push the material 11 entering from the second feeding chamber 8. The second boat-pushing mechanism 13 pushes the material 11 from the second feeding chamber 8 sequentially to the second transition chamber 6, the second heating section 19, the first transition chamber 5, and the second discharge chamber 9.

[0030] The continuous purification furnace proposed in this embodiment is an ultra-high temperature continuous purification furnace for workpiece waste heat recovery and multi-stage purification. It adopts resistance heating, and the heating section includes two furnace chambers: a first furnace chamber 2 and a second furnace chamber 3. A first heating element 20 is installed in the first furnace chamber 2, and a first sub-waste pipe 15 and a second sub-waste pipe 16 are installed on the side of the first furnace chamber 2. A second heating element 21 is installed in the second furnace chamber 3, and a third sub-waste pipe 17 and a fourth sub-waste pipe 18 are installed on the side of the second furnace chamber 3. Both the first heating element 20 and the second heating element 21 are provided with multiple temperature zones to meet the temperature curve requirements. The temperature zones of the first heating element 20 and the second heating element 21 are controlled separately and do not affect each other. A heat insulation plate is installed between the first furnace chamber 2 and the second furnace chamber 3 to reduce temperature interference caused by heat conduction. Multi-stage purification is adopted, that is, the first furnace chamber 2 has two waste pipes in the workpiece running direction, and the second furnace chamber 3 has two waste pipes in the furnace length direction. The feed ends of the first and third sub-waste pipes 15 and 17, which are close to the furnace, have a temperature of 1400-2000℃. The discharge ends of the second and fourth sub-waste pipes 16 and 18, which are close to the furnace, have a temperature of 2500-2600℃. Different impurities will volatilize at different temperatures and be discharged in a timely manner, effectively avoiding the reaction between different types of by-products that could lead to hardening and complication of impurities.

[0031] Other beneficial effects:

[0032] The waste heat of material 10 in the first furnace chamber 2 of the continuous purification furnace is used to heat the material 11 in the second furnace chamber 3, and the waste heat of the second furnace chamber 3 is used to heat the material 10 in the first furnace chamber 2, thus realizing the recovery and utilization of waste heat of the material and greatly reducing the consumption per ton of material of the equipment.

[0033] The purification furnace uses resistance heating and has two waste discharge ports, one for low temperature and one for high temperature, set in the direction of workpiece movement. Different impurities will volatilize at different temperatures and be discharged in time, effectively avoiding the reaction between different types of by-products that would lead to impurity hardening and complication.

[0034] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A continuous purification furnace, characterized in that, It includes a first purification mechanism and a second purification mechanism; the first purification mechanism is located above the second purification mechanism, and the first purification mechanism includes, from left to right, a first feed chamber, a first transition chamber, a first heating section, a second transition chamber, and a first discharge chamber; the second purification mechanism includes, from left to right, a second discharge chamber, a first transition chamber, a second heating section, a second transition chamber, and a second feed chamber; the lower part of the first heating section and the upper part of the second heating section are adjacent to each other and a heat insulation component is provided between them.

2. The continuous purification furnace according to claim 1, characterized in that, The first heating section includes a first heating element and a first furnace chamber; the first heating element is disposed on the side wall of the first furnace chamber; the second heating section includes a second heating element and a second furnace chamber, the second heating element is disposed on the side wall of the second furnace chamber, and the heat insulation element is disposed between the first furnace chamber and the second furnace chamber.

3. The continuous purification furnace according to claim 2, characterized in that, The first heating section is provided with a first waste pipe, which extends through the first furnace chamber to the outside of the first furnace chamber. The second heating section is provided with a second waste pipe, which extends through the second furnace chamber to the outside of the second furnace chamber.

4. The continuous purification furnace according to claim 3, characterized in that, The first waste discharge pipe includes a first sub-waste discharge pipe and a second sub-waste discharge pipe. The first sub-waste discharge pipe and the second sub-waste discharge pipe are respectively located on the side wall of the first furnace near the feed end and the discharge end of the first furnace. The temperature inside the first furnace where the first sub-waste discharge pipe is located is 1400-2000℃, and the temperature inside the first furnace where the second sub-waste discharge pipe is located is 2500-2600℃.

5. The continuous purification furnace according to claim 3, characterized in that, The second waste discharge pipe includes a third sub-waste discharge pipe and a fourth sub-waste discharge pipe; the third sub-waste discharge pipe and the fourth sub-waste discharge pipe are respectively located on the side wall of the second furnace near the feed end and the discharge end of the second furnace. The temperature inside the second furnace where the third sub-waste discharge pipe is located is 1400-2000℃, and the temperature inside the second furnace where the fourth sub-waste discharge pipe is located is 2500-2600℃.

6. The continuous purification furnace according to claim 1, characterized in that, The heat insulation component is a heat insulation board.

7. The continuous purification furnace according to claim 6, characterized in that, The heat insulation board is a graphite heat insulation board.

8. The continuous purification furnace according to claim 1, characterized in that, It also includes a first boat-pushing mechanism, which is located on the left side of the first feeding chamber and is used to push the material entering from the first feeding chamber.

9. The continuous purification furnace according to claim 1, characterized in that, It also includes a second boat-pushing mechanism, which is located on the right side of the second feeding chamber and is used to push the material entering from the second feeding chamber.

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