Gas outlet structure and horizontal carbonization and graphitization integrated furnace

Abstract

The utility model relates to a gas outlet structure and a horizontal carbonization and graphitization integrated furnace. The air outlet structure comprises a reaction furnace shell, a reaction main body and an air outlet assembly, wherein the reaction main body is arranged in the reaction furnace shell; the air outlet assembly comprises a plurality of air outlet pipes, a connecting pipe and a heat preservation layer, one end of each air outlet pipe is located in the reaction main body, the other end penetrates through the reaction main body and the reaction furnace shell to the outside, and the connecting pipe is communicated with the outside end of each air outlet pipe; the part, positioned outside the reaction furnace shell, of each air outlet pipe is coated with a thermal insulation layer; according to the carbonization and graphitization integrated furnace, a plurality of air outlets are formed by designing a plurality of air outlet pipes, so that the exhaust area of the carbonization and graphitization integrated furnace is increased, tar and other gases can be efficiently and stably exhausted, and the tar is prevented from being accumulated in the furnace or a pipeline; in addition, the outer side of the air outlet pipe is wrapped with the heat preservation layer, the temperature in the air outlet pipe can be effectively reduced, tar liquefaction is prevented, and it is guaranteed that gas is smoothly exhausted.

Description

Technical Field

[0001] The utility model relates to the technical field related to carbonization and graphitization integrated furnaces, in particular to a gas outlet structure and a horizontal carbonization and graphitization integrated furnace. Background Art

[0002] As an important industrial equipment, carbonization and graphitization integrated furnace is widely used in many fields such as metallurgy, chemical industry, new material preparation, etc. The tar gas generated during its operation has a significant impact on the normal operation and service life of the equipment.

[0003] Most of the current carbonization and graphitization integrated furnaces adopt a single straight pipe gas outlet design, usually a straight pipe connecting the furnace body and the exhaust system. Although the structure is simple, the exhaust efficiency is low, especially when processing a large amount of tar gas. On the one hand, it is easy to have poor exhaust, which leads to tar accumulation in the furnace, affecting the operation of the furnace and temperature control. On the other hand, the exhaust pipe itself is also prone to blockage and corrosion. Utility Model Content

[0004] Based on this, it is necessary to provide a carbonization graphitization integrated furnace that can smoothly discharge tar gas and is not prone to clogging, in order to address the problem that the current gas outlet design of the carbonization graphitization integrated furnace easily leads to tar accumulation and blockage in the furnace and the exhaust pipe.

[0005] In view of the above problems, the present application first provides an air outlet structure, including a reactor shell, a reaction body and an air outlet assembly, wherein the reaction body is arranged inside the reactor shell;

[0006] The air outlet assembly includes a plurality of air outlet pipes, a connecting pipe and an insulation layer, one end of each of the air outlet pipes is located inside the reaction body, and the other end passes through the reaction body and the reactor shell to the outside, and the connecting pipes are respectively connected to one end of each of the air outlet pipes located outside;

[0007] The portion of each of the air outlet pipes located outside the reactor shell is wrapped with the thermal insulation layer.

[0008] In one embodiment, the thermal insulation layer extends inwardly through the reactor shell to between the reactor shell and the reaction body.

[0009] In one embodiment, the air outlet assembly also includes a plurality of flange tubes corresponding one to one with the air outlet pipe, one end of the flange tube is located between the reaction body and the reactor shell, and the other end passes through the reactor shell to the outside, the air outlet pipe passes through the corresponding flange tube, and the insulation layer is arranged between the flange tube and the air outlet pipe.

[0010] In one embodiment, the air outlet pipes are located in the same plane and are symmetrically arranged along the vertical plane where the Y axis is located.

[0011] In one embodiment, the air outlet assembly includes two air outlet pipes.

[0012] In one embodiment, the distance between the air outlet pipe and the end of the reaction body on the side where it is located is L, the distance between the two air outlet pipes is D, and L≤D / 2.

[0013] In one embodiment, a divergent air inlet structure is provided at one end of the air outlet pipe located inside the reaction body, and a total air inlet area of ​​the divergent air inlet structure is smaller than a cross-sectional area of ​​the end of the air outlet pipe located inside the reaction body.

[0014] In one embodiment, the divergent air inlet structure includes a plug and a plurality of lateral air inlets, the plug is fixed to the air outlet pipe and is used to block the air outlet pipe, the lateral air inlet passes through the side of the air outlet pipe along the circumferential direction, and / or

[0015] The divergent air inlet structure includes a wind shield, which is fixed inside the air outlet pipe and used to block the air outlet pipe, and the wind shield is provided with a plurality of air inlets along the axial direction of the air outlet pipe, and / or

[0016] The divergent air inlet structure includes a plurality of air guides, each of which is fixed to the inner wall of the air outlet pipe and is distributed in a spiral shape along the circumferential direction of the air outlet pipe.

[0017] A second aspect of the present application provides a horizontal carbonization and graphitization integrated furnace, comprising the above-mentioned gas outlet structure.

[0018] In one embodiment, the horizontal carbonization and graphitization integrated furnace further includes a filtering system and a vacuum device, the other end of the connecting pipe is connected to one end of the filtering system, and the other end of the filtering system is connected to the vacuum device.

[0019] The above-mentioned air outlet structure forms multiple air outlets by designing multiple air outlet pipes to increase the exhaust area of ​​the carbonization and graphitization integrated furnace, ensuring that tar and other gases can be discharged efficiently and stably. On the one hand, it prevents the accumulation of tar in the furnace due to poor exhaust, and on the other hand, it helps to balance the airflow, prevent the pipe from being blocked or worn due to unstable airflow speed, and ensure that the tar gas can be fully discharged.

[0020] In addition, by wrapping the air outlet duct outside the reactor shell with an insulation layer, the temperature inside the air outlet duct can be effectively controlled, tar liquefaction can be prevented, and smooth gas discharge can be ensured. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional diagram of the horizontal carbonization and graphitization integrated furnace of this application;

[0022] Figure 2 for Figure 1 A cross-sectional view of the middle furnace body portion along the top view when one of the furnace covers is open;

[0023] Figure 3 for Figure 1 A cross-sectional view of one of the air outlet pipes along the top view.

[0024] Figure numerals: 10, reactor shell; 20, reaction body; 21, crucible; 22, insulation part; 23, heating element; 30, air outlet assembly; 31, air outlet pipe; 32, connecting pipe; 33, insulation layer; 34, flange pipe; 351, plug; 352, side air inlet; 200, filtration system; 300, vacuum device. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0027] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0031] The carbonization and graphitization integrated furnace will volatilize a large amount of fat / phosphorus gas during the carbonization stage. If the gas outlet structure cannot discharge the gas in time, the gas will overflow to the inner wall of the cavity, and under the temperature difference of water cooling, the gas will liquefy and form thick grease, which will cause tar to accumulate in the furnace.

[0032] Please combine Figure 1 , Figure 2 as well as Figure 3 As shown, the present application first provides an air outlet structure, including a reactor shell 10, a reaction body 20 and an air outlet assembly 30, wherein the reaction body 20 is arranged inside the reactor shell 10; the air outlet assembly 30 includes multiple air outlet pipes 31, connecting pipes 32 and a thermal insulation layer 33, one end of each air outlet pipe 31 is located inside the reaction body 20, and the other end passes through the reaction body 20 and the reactor shell 10 to the outside, and the connecting pipes 32 are respectively connected to one end of each air outlet pipe 31 located outside; the part of each air outlet pipe 31 located outside the reactor shell 10 is wrapped with a thermal insulation layer 33.

[0033] In the present application, multiple air outlets are formed by designing multiple air outlets 31 to increase the exhaust area of ​​the carbonization and graphitization integrated furnace, ensuring that tar and other gases can be discharged efficiently and stably. On the one hand, it prevents the accumulation of tar in the furnace due to poor exhaust, and on the other hand, it helps to balance the airflow, prevent the pipeline from being blocked or worn due to unstable airflow speed, and ensure that the tar gas can be fully discharged.

[0034] In addition, the working temperature in the carbonization and graphitization integrated furnace is very high. When the tar gas is discharged from the carbonization and graphitization integrated furnace through the air outlet pipe 31, it may be liquefied due to the temperature drop, thereby causing blockage or corrosion in the air outlet pipe 31. In the present application, by wrapping the air outlet pipe 31 located on the outer part of the reactor shell 10 with an insulation layer 33, the temperature in the air outlet pipe 31 can be effectively lowered to prevent the tar from liquefying, ensure smooth gas discharge, and reduce the possibility of the air outlet pipe 31 being damaged by high temperature and corrosive gases, thereby improving the service life of the gas outlet structure of the present application.

[0035] It should be noted that one end of the air outlet pipe 31 extends into the interior of the reaction body 20. Compared with the situation where the end of the air outlet pipe 31 is flush with the inner wall of the reaction body 20 or embedded in the inner wall of the reaction body 20, the structure of the present application can directly extract the fat / phosphorus gas volatilized during the carbonization stage through the opening of the air outlet pipe 31 located inside the reaction body 20, reduce the contact between the gas and the inner wall of the reaction body 20, and avoid the liquefaction of the gas due to the temperature difference of water cooling, thereby causing tar accumulation inside the reaction body 20.

[0036] In some embodiments, the air outlet pipe 31 is made of graphite, and the material of the thermal insulation layer 33 is graphite soft felt.

[0037] Preferably, the thermal insulation layer 33 includes two layers of graphite soft felt with a thickness of 10 mm.

[0038] Of course, the material, structure and size of the air outlet duct 31 and the insulation layer 33 can also be adjusted according to actual needs, as long as the insulation performance can meet the needs, and this application does not make further limitations here.

[0039] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the insulation layer 33 extends inwardly through the reactor shell 10 to between the reactor shell 10 and the reaction body 20 .

[0040] The reaction body 20 includes a crucible 21, a heat preservation part 22 and a heating element 23. The heat preservation part 22 is coated on the outside of the crucible 21, and the heating element 23 is coated on the outside of the heat preservation part 22. The heating element 23 heats the crucible 21 to cooperate with the heat preservation effect of the heat preservation part 22, forming a high temperature environment inside the crucible 21.

[0041] It is not difficult to understand that, except for the portion of the air outlet pipe 31 located in the reaction body 20, the temperature of other portions of the air outlet pipe 31 will gradually decrease in the direction away from the reaction body 20. Therefore, extending the insulation layer 33 inwardly through the reactor shell 10 to between the reactor shell 10 and the reaction body 20 can increase the area covered by the insulation layer 33 as much as possible, so as to reduce the possibility of liquefaction of the tar gas due to the decrease in temperature after leaving the reaction body 20, and further improve the smoothness of gas discharge.

[0042] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the air outlet assembly 30 also includes a plurality of flange tubes 34 corresponding one to one with the air outlet pipe 31, one end of the flange tube 34 is located between the reaction body 20 and the reactor shell 10, and the other end passes through the reactor shell 10 to the outside, the air outlet pipe 31 passes through the corresponding flange tube 34, and the insulation layer 33 is arranged between the flange tube 34 and the air outlet pipe 31.

[0043] With such arrangement, the outer wall of the flange tube 34 can closely fit with the opening of the reactor shell 10 to increase the installation stability of the equipment. At the same time, the flange tube 34 can also play a certain limiting and thermal insulation effect, thereby facilitating the installation of the thermal insulation layer 33 and improving the thermal insulation effect.

[0044] For ease of description, the axis direction of the reaction body 20 is defined as the X-axis direction in this application;

[0045] The central axis of the reaction body 20 is defined as an X axis, and an axis passing through the center point of the reaction body 20 in the horizontal direction and perpendicular to the X axis is defined as a Y axis.

[0046] Please combine Figure 1 as well as Figure 2 As shown, in some embodiments, each air outlet pipe 31 is in the same plane and is symmetrically arranged along the vertical plane where the Y axis is located; so that each air outlet pipe 31 can filter the impurity gas to the maximum extent, and the air outlet pipes 31 symmetrically arranged on both sides of the vertical plane where the Y axis is located can effectively avoid the pressure difference phenomenon, help balance the airflow, and also ensure the uniformity of the internal temperature of the entire reaction body 20 (the temperature at the location of the air outlet pipe 31 is relatively low due to the air outlet).

[0047] Specifically, if there are an even number of air outlet pipes 31, each air outlet pipe 31 is symmetrically arranged along the vertical plane where the Y axis is located; if there are an odd number of air outlet pipes 31, one of the air outlet pipes 31 is located in the vertical plane where the Y axis is located, and the remaining air outlet pipes 31 are symmetrically arranged along the vertical plane where the Y axis is located.

[0048] Please combine Figure 1 as well as Figure 2As shown, in some embodiments, the air outlet assembly 30 includes two air outlet pipes 31 .

[0049] It is not difficult to understand that, when the total air outlet area of ​​each air outlet duct 31 is certain, the more the number of air outlet ducts 31, the greater the improvement in air flow uniformity, but at the same time, the higher the equipment cost and the greater the difficulty of installation. In the present application, two air outlet ducts 31 are chosen to be symmetrically arranged, which can take into account both equipment cost and air flow uniformity.

[0050] Preferably, the inner diameters of the two air outlet pipes 31 are both 75 mm, and the distance between the two air outlet pipes 31 is 1500 mm.

[0051] In some embodiments, the distance between the air outlet pipe 31 and the end of the reaction body 20 on the side where it is located is L, and the distance between the two air outlet pipes 31 is D, and L≤D / 2.

[0052] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, a divergent air inlet structure is provided at one end of the air outlet pipe 31 located inside the reaction body 20, and the total air inlet area of ​​the divergent air inlet structure is smaller than the cross-sectional area of ​​the end of the air outlet pipe 31 located inside the reaction body 20.

[0053] The divergent air inlet structure can ensure that the tar gas is fully mixed when entering the air outlet pipe 31, ensuring uniform distribution of the airflow, and solving the problem of uneven gas flow caused by temperature difference, thereby ensuring smooth gas discharge and avoiding liquefaction and accumulation of gas in the air outlet pipe 31, and effectively solving the pipeline vibration and noise problems caused by gas impact.

[0054] Please combine Figure 2 as well as Figure 3 As shown, in some embodiments, the divergent air inlet structure includes a plug 351 and a plurality of lateral air inlets 352. The plug 351 is fixed to the air outlet duct 31 and is used to block the air outlet duct 31. The lateral air inlets 352 penetrate the side of the air outlet duct 31 along the circumferential direction.

[0055] The outlet pipe 31 is blocked by the plug 351 so that the gas in the reaction body 20 can only enter the outlet pipe 31 uniformly along the circumference through the side air inlets 352, thereby improving the uniformity of the air flow to avoid temperature differences. This is suitable for scenarios that require extremely high uniformity of gas distribution and are not very sensitive to air flow resistance.

[0056] Preferably, the plug 351 is threadedly connected to the air outlet pipe 31 to facilitate the installation and removal of the plug 351.

[0057] More preferably, 14 lateral air inlets 352 with a diameter of 10 mm are evenly distributed on the side of the air outlet pipe 31 in the circumferential direction.

[0058] Of course, in some other embodiments, the shape, size and arrangement of the lateral air inlet 352 can be adjusted according to actual needs, and the present application does not make further limitations here.

[0059] In some other embodiments, the divergent air inlet structure includes a wind shield, which is fixed inside the air outlet pipe 31 and used to block the air outlet pipe 31 . The wind shield is provided with a plurality of air inlets along the axial direction of the air outlet pipe 31 .

[0060] The gas enters the air outlet pipe 31 uniformly through multiple air inlets, which can effectively disperse the gas flow, reduce the local excessive gas flow rate, and achieve more uniform gas distribution. Compared with the previous embodiment, this method is simple in structure and easy to manufacture and maintain.

[0061] In some other embodiments, the divergent air inlet structure includes a plurality of air guides, each of which is fixed to the inner wall of the air outlet pipe 31 and is distributed in a spiral shape along the circumferential direction of the air outlet pipe 31 .

[0062] The spirally distributed air guides can cause the airflow to generate a swirl when passing through, thereby increasing the contact area between the gas and the inner wall of the air outlet pipe 31 , ensuring that the airflow enters the air outlet pipe 31 evenly.

[0063] In addition to the air guide, other swirl air intake structures may also be provided on the air outlet pipe 31, as long as the airflow can generate swirl when passing through, and the present application does not make any further limitations here.

[0064] Of course, any two or three of the above-mentioned solutions can be selected simultaneously according to the demand for air flow uniformity. Take the simultaneous selection of three solutions as an example: the end of the air outlet pipe 31 is blocked by a plug 351, and the part of the air outlet pipe 31 located in the reaction body 20 is provided with a lateral air inlet 352, and the air outlet pipe 31 is also provided with a wind shield and an air guide member located on the side away from the reaction body 20 compared to the lateral air inlet 352, so as to ensure the uniformity of the air flow in the air outlet pipe 31 through the simultaneous action of the lateral air inlet 352, the wind shield and the air guide member.

[0065] Please combine Figure 1 as well as Figure 2 As shown, the second aspect of the present application includes a horizontal carbonization and graphitization integrated furnace, including the above-mentioned gas outlet structure.

[0066] Please refer to Figure 1 As shown, in some embodiments, the horizontal carbonization and graphitization integrated furnace further includes a filtration system 200 and a vacuum device 300 , the other end of the connecting pipe 32 is connected to one end of the filtration system 200 , and the other end of the filtration system 200 is connected to the vacuum device 300 .

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. An air outlet structure, characterized in that: It comprises a reactor shell (10), a reactor body (20) and an air outlet assembly (30), wherein the reactor body (20) is arranged inside the reactor shell (10); The air outlet assembly (30) comprises a plurality of air outlet pipes (31), a connecting pipe (32) and a heat-insulating layer (33); one end of each of the air outlet pipes (31) is located inside the reaction body (20), and the other end passes through the reaction body (20) and the reaction furnace shell (10) to the outside; the connecting pipe (32) is respectively connected to one end of each of the air outlet pipes (31) located outside; The portion of each of the air outlet pipes (31) located outside the reactor shell (10) is wrapped with the thermal insulation layer (33).

2. The air outlet structure according to claim 1, characterized in that: The heat-insulating layer (33) extends inwardly through the reactor shell (10) to between the reactor shell (10) and the reaction body (20).

3. The air outlet structure according to claim 2, characterized in that: The air outlet assembly (30) further comprises a plurality of flange pipes (34) corresponding one to one with the air outlet pipe (31); one end of the flange pipe (34) is located between the reaction body (20) and the reactor shell (10), and the other end passes through the reactor shell (10) to the outside; the air outlet pipe (31) passes through the corresponding flange pipe (34), and the thermal insulation layer (33) is arranged between the flange pipe (34) and the air outlet pipe (31).

4. The air outlet structure according to claim 1, characterized in that: The air outlet pipes (31) are located in the same plane and are symmetrically arranged along the vertical plane where the Y axis is located.

5. The air outlet structure according to claim 2, characterized in that: The air outlet component (30) comprises two air outlet pipes (31).

6. The air outlet structure according to claim 5, characterized in that: The distance between the air outlet pipe (31) and the end of the reaction body (20) on the side where it is located is L, and the distance between the two air outlet pipes (31) is D, where L≤D / 2.

7. The air outlet structure according to claim 1, characterized in that: A divergent air inlet structure is provided at one end of the air outlet pipe (31) located inside the reaction body (20), and a total air inlet area of ​​the divergent air inlet structure is smaller than a cross-sectional area of ​​the end of the air outlet pipe (31) located inside the reaction body (20).

8. The air outlet structure according to claim 7, characterized in that: The divergent air inlet structure comprises a plug (351) and a plurality of lateral air inlets (352), the plug (351) being fixed to the air outlet pipe (31) and used to block the air outlet pipe (31), the lateral air inlets (352) penetrating the side of the air outlet pipe (31) in a circumferential direction, and / or The divergent air inlet structure comprises a wind shield, the wind shield is fixedly arranged inside the air outlet pipe (31) and is used to block the air outlet pipe (31), the wind shield is provided with a plurality of air inlets along the axial direction of the air outlet pipe (31), and / or The divergent air inlet structure comprises a plurality of air guide members, each of which is fixed to the inner wall of the air outlet pipe (31) and is distributed in a spiral shape along the circumferential direction of the air outlet pipe (31).

9. A horizontal carbonization and graphitization integrated furnace, characterized in that: It comprises the air outlet structure as claimed in any one of claims 1 to 8.

10. The horizontal carbonization and graphitization integrated furnace according to claim 9, characterized in that: The horizontal carbonization and graphitization integrated furnace further comprises a filtering system (200) and a vacuum device (300), the other end of the connecting pipe (32) being connected to one end of the filtering system (200), and the other end of the filtering system (200) being connected to the vacuum device (300).

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