Large pot-type furnace discharging system and uniform discharging method

Abstract

The invention relates to the technical field of pot-type furnaces, in particular to a large pot-type furnace discharging system and a uniform discharging method.In the discharging system, a plurality of material tanks are averagely divided into four areas in two rows and two columns, the four areas are the first area, the second area, the third area and the fourth area, the first area and the fourth area are diagonal, and each area is provided with a transmission system; the bottom of each material tank is connected with two discharging machines through a cooling water jacket, and the transmission system enables the two discharging machines connected with each material tank to discharge materials in a staggered mode. The uniform discharging method comprises the steps that the outer side discharging machines of the first area and the fourth area, the outer side discharging machines of the second area and the third area, the inner side discharging machines of the first area and the fourth area and the inner side discharging machines of the second area and the third area conduct discharging at the same time in sequence. Through reasonable layout of the discharging machine and a design method, materials in one material tank are discharged in batches in a staggered time manner, uniform and continuous discharging is realized, and the uniformity of product quality is ensured.

Description

Technical Field

[0001] The invention relates to the technical field of pot furnaces, and in particular to a large pot furnace discharging system and a uniform discharging method. Background Art

[0002] Calcined coke is a basic raw material for prebaked anodes and the production of lithium-ion battery negative electrode materials and auxiliary materials. Its quality has a great impact on the non-ferrous industry and the new energy industry. Especially when the electrolytic cell is large-scale and the current intensity is increased, the quality uniformity of calcined coke directly affects the quality stability of the prebaked anode, and indirectly affects the operation stability and current efficiency of the electrolytic cell.

[0003] Improving the uniformity of calcined coke quality can not only start from the calcination process, but also focus on the discharge system of large tank furnaces. The current tank furnace uses one discharge machine for one tank. During discharge, the materials in the entire tank are discharged downward at the same time. However, since the tank is a long and narrow structure, this discharge method will inevitably make the discharge speed in the center of the tank greater than the discharge speed at both ends, so that the residence time of the material in the center of the tank is shorter than that of the material at both ends, resulting in the calcination temperature of the center material being lower than that of the material at both ends, resulting in material quality uniformity problems. Therefore, it is urgent to optimize the current discharge system and discharge method of large tank furnaces. Summary of the invention

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present invention provides a large-scale tank furnace discharging system and a uniform discharging method. By rationally arranging the discharging machine and designing the discharging method, the materials in a material tank are discharged in batches at staggered times, thereby achieving uniform and continuous discharging and ensuring the uniformity of product quality.

[0005] In order to achieve the above object, the main technical solutions adopted by the present invention include: A large tank furnace discharging system, the tank furnace comprises a plurality of material tanks, the plurality of material tanks are arranged in the tank furnace in two rows along the furnace width direction and a plurality of columns along the furnace length direction, the long side of the material tank corresponds to the wide side of the tank furnace, a cooling water jacket is provided at the bottom of the material tank, the cooling water jacket is connected to a discharging machine, the plurality of material tanks are evenly divided into four areas of two rows and two columns, the four areas are a first area, a second area, a third area and a fourth area, the first area is diagonal to the fourth area; a transmission system is provided in each area, the bottom of each material tank is connected to two discharging machines through a cooling water jacket, the two discharging machines at the bottom of each material tank are arranged along the length direction of the material tank, the discharging machine close to the outside of the tank furnace along the furnace width direction is an outer discharging machine, and the discharging machine away from the outside of the tank furnace along the furnace width direction is an inner discharging machine, the discharging machine is connected to the transmission system of the area where it is located, and the transmission system is used to control the start and stop of the discharging machine so that the two discharging machines connected to each material tank discharge at different times.

[0006] By connecting each material tank to two discharge machines for staggered discharge, the phenomenon of fast discharge in the center of the tank and slow discharge at both ends is avoided, so that the material in the tank is discharged evenly and continuously, ensuring the uniformity of product quality and avoiding the problem of large fluctuations in the fire channel temperature due to large changes in the volatile flow rate. The volatiles of the tank furnace escape evenly, which can ensure the uniformity of the fire channel temperature and product quality.

[0007] By setting two dischargers along the length of the tank, the discharge is more uniform, which is suitable for long and narrow tanks.

[0008] Furthermore, the transmission system is used to control the synchronous operation of the outer discharge machine and the inner discharge machine in the control area. The discharge efficiency is improved by synchronously controlling multiple discharge machines.

[0009] Furthermore, the two dischargers connected to each material tank are closely connected, and the contact point is blocked with refractory fiber cotton. By blocking with refractory fiber cotton, air is prevented from leaking into the furnace from the discharge port to affect product quality.

[0010] Furthermore, the two discharge machines connected to each material tank are installed in the same direction, and the installation direction of the discharge machine enables the discharge machine to rotate clockwise or counterclockwise to discharge.

[0011] Furthermore, the discharging machines connected to adjacent rows of material tanks in the tank furnace are installed in the same direction, and the discharging machines connected to adjacent columns of material tanks are installed in opposite directions.

[0012] By setting the installation direction of the discharge machine, the adjacent discharge tanks are in opposite directions, which avoids simultaneous discharge and ensures that the volatile matter in the fire channel overflows evenly.

[0013] A large tank furnace uniform discharging method adopts a large tank furnace discharging system, comprising the following steps: S1, the outer discharge machines of the first area and the fourth area discharge materials simultaneously for n seconds, at which time other discharge machines stop working; S2: The outer discharge machines of the second and third areas discharge materials simultaneously for n seconds, and the other discharge machines stop working; S3: The inner discharge machines of the first area and the fourth area discharge materials simultaneously for n seconds, and the other discharge machines stop working; S4: The inner discharge machines of the second and third areas discharge materials simultaneously for n seconds, and the other discharge machines stop working; S5. Repeat steps S1 to S4.

[0014] Through the above-mentioned discharging method, the inner discharging machine and the outer discharging machine in each area discharge materials at different times, which avoids the phenomenon that the material is discharged quickly in the center of the material tank and slowly at the two ends, so that the material in the material tank is discharged evenly and continuously, ensuring the uniformity of product quality. The overall layout and steps make the load of the conveying equipment uniform, and also avoid the problem of large fluctuations in the temperature of the fire channel caused by large changes in the volatile flow rate. The volatiles of the tank furnace escape evenly, which can ensure the uniformity of the fire channel temperature and product quality.

[0015] Furthermore, the n value in steps S1-S4 is equal, and n takes any value between 10 and 20.

[0016] The beneficial effects of the present invention are: A large tank furnace discharging system and a uniform discharging method of the present invention, by reasonably arranging the discharging machine and designing the discharging method, the materials in a material tank can be discharged in batches at staggered times, avoiding the phenomenon that the material center of the material tank is discharged quickly and the two ends are discharged slowly, so that the material in the material tank is discharged evenly and continuously, ensuring the uniformity of product quality. The system is particularly suitable for tank furnaces with a material tank length exceeding 2m, such as 2.06m and 2.2m tank furnaces.

[0017] At the same time, the overall layout and steps make the load of the conveying equipment uniform, and avoid the problem of large fluctuations in the fire channel temperature due to large changes in the volatile flow. The volatiles of the tank furnace escape evenly, which can ensure the uniformity of the fire channel temperature and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view schematic diagram of a large tank furnace discharge system of the present invention; Figure 2 It is a side view schematic diagram of the connection between the cooling water jacket at the bottom of the single-row material tank and the discharge machine in the present invention.

[0019] In the figure: 1. First area; 2. Second area; 3. Third area; 4. Fourth area; 5. Material tank; 6. Transmission system; 7. Cooling water jacket; 8. Discharge machine; 81. Outer discharge machine; 82. Inner discharge machine. DETAILED DESCRIPTION

[0020] In order to better explain the present invention and facilitate understanding, the present invention is described in detail below in conjunction with the accompanying drawings through specific embodiments. Although exemplary embodiments of the present invention are shown in the accompanying drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a clearer and more thorough understanding of the present invention and to be able to fully convey the scope of the present invention to those skilled in the art.

[0021] like Figure 1-Figure 2As shown, a large tank furnace discharge system is shown, the tank furnace includes a plurality of material tanks 5, the plurality of material tanks 5 are arranged in the tank furnace in two rows along the furnace width direction and a plurality of columns along the furnace length direction, the long side of the material tank 5 corresponds to the wide side of the tank furnace, a cooling water jacket 7 is provided at the bottom of the material tank 5, the cooling water jacket 7 is connected to a discharger 8, the plurality of material tanks 5 are evenly divided into four areas of two rows and two columns, the four areas are a first area 1, a second area 2, a third area 3 and a fourth area 4, the first area 1 and the fourth area 4 is a diagonal; a transmission system 6 is arranged in each area, and the bottom of each material tank 5 is connected to two discharge machines 8 through a cooling water jacket 7. The two discharge machines 8 at the bottom of each material tank 5 are arranged along the length direction of the material tank 5. The discharge machine 8 close to the outside of the tank furnace along the furnace width direction is the outer discharge machine 81, and the discharge machine 8 away from the outside of the tank furnace along the furnace width direction is the inner discharge machine 82. The discharge machine 8 is connected to the transmission system 6 of the area where it is located. The transmission system 6 is used to control the start and stop of the discharge machine 8, so that the two discharge machines 8 connected to each material tank 5 discharge at different times.

[0022] By connecting each material tank 5 to two discharge machines 8 for staggered discharge, the phenomenon of fast discharge at the center of the material tank 5 and slow discharge at the two ends is avoided, so that the material in the material tank 5 is discharged evenly and continuously, ensuring the uniformity of product quality and avoiding the problem of large fluctuations in the fire channel temperature due to large changes in the volatile flow rate. The volatiles of the tank furnace escape evenly, which can ensure the uniformity of the fire channel temperature and product quality.

[0023] By arranging two dischargers 8 along the length direction of the material tank 5 , the discharge is more uniform, which is suitable for a long and narrow material tank 5 .

[0024] Specifically, the transmission system 6 is used to control the synchronous operation of the outer discharge machine 81 and the inner discharge machine 82 in the control area. The discharge efficiency is improved by synchronously controlling multiple discharge machines 8.

[0025] Specifically, the two dischargers 8 connected to each material tank 5 are closely connected, and the contact point is blocked by refractory fiber cotton. By blocking with refractory fiber cotton, the discharge port is prevented from leaking air into the furnace to affect product quality.

[0026] Specifically, the two dischargers 8 connected to each material tank 5 are installed in the same direction, and the installation direction of the dischargers 8 enables the dischargers 8 to rotate clockwise or counterclockwise to discharge materials.

[0027] Specifically, the discharging machines 8 connected to adjacent rows of material tanks 5 in the tank furnace are installed in the same direction, and the discharging machines 8 connected to adjacent columns of material tanks 5 are installed in opposite directions.

[0028] By setting the installation direction of the discharge machine 8, the adjacent discharge tanks 5 are in opposite directions, thereby avoiding simultaneous discharge and ensuring uniform overflow of volatile components in the fire channel.

[0029] A large tank furnace uniform discharging method adopts a large tank furnace discharging system, comprising the following steps: S1, the outer discharge machines 81 of the first area 1 and the fourth area 4 discharge materials simultaneously for n seconds, at which time the other discharge machines 8 stop working; S2, the outer discharge machines 81 of the second area 2 and the third area 3 discharge materials simultaneously for n seconds, at which time the other discharge machines 8 stop working; S3, the inner discharge machines 82 of the first area 1 and the fourth area 4 discharge materials simultaneously for n seconds, and the other discharge machines 8 stop working; S4, the inner discharge machines 82 of the second area 2 and the third area 3 discharge materials simultaneously for n seconds, and the other discharge machines 8 stop working; S5. Repeat steps S1 to S4.

[0030] Through the above-mentioned discharge method, the inner discharge machine 82 and the outer discharge machine 81 in each area discharge materials at staggered times, avoiding the phenomenon that the material is discharged quickly at the center of the material tank 5 and slowly at the two ends, so that the material in the material tank 5 is discharged evenly and continuously, ensuring the uniformity of product quality, and the overall layout and steps make the load of the conveying equipment uniform, and also avoid the problem of large fluctuations in the fire channel temperature due to large changes in the volatile flow rate. The volatiles of the tank furnace escape evenly, which can ensure the uniformity of the fire channel temperature and product quality.

[0031] Specifically, the value of n in steps S1-S4 is equal, and n is any value between 10 and 20. In this embodiment, 15 seconds is used.

[0032] The structure of a commonly used discharge machine 8 and a transmission system 6 have been shown in public documents, and the principles, structures, etc. thereof will not be elaborated here.

[0033] Figure 1 1 is a top view schematic diagram of a large tank furnace discharge system. In order to clearly show the positions of the inner discharger 82 and the outer discharger 81 in each area, so as to understand the discharge steps of the uniform discharge method of the present invention in combination with the diagram, the discharge steps are not shown in FIG. Figure 1 The cooling water jacket 7 is shown schematically, and the connection between the cooling water jacket 7 and the discharge machine 8 is Figure 2 Shown in.

[0034] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may alter, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A large tank furnace discharge system, the tank furnace comprising a plurality of material tanks (5), the plurality of material tanks (5) being arranged in the tank furnace in two rows along the furnace width direction and in a plurality of columns along the furnace length direction, the long sides of the material tanks (5) corresponding to the wide sides of the tank furnace, a cooling water jacket (7) being provided at the bottom of the material tanks (5), the cooling water jacket (7) being connected to a discharge machine (8), characterized in that: The plurality of material tanks (5) are evenly divided into four areas of two rows and two columns, the four areas being a first area (1), a second area (2), a third area (3) and a fourth area (4), the first area (1) being diagonally opposite to the fourth area (4); a transmission system (6) is arranged in each area, the bottom of each material tank (5) is connected to two discharge machines (8) via a cooling water jacket (7), the two discharge machines (8) at the bottom of each material tank (5) are arranged along the length direction of the material tank (5), the discharge machine (8) close to the outside of the tank furnace along the furnace width direction is an outer discharge machine (81), and the discharge machine (8) far from the outside of the tank furnace along the furnace width direction is an inner discharge machine (82), the discharge machine (8) is connected to the transmission system (6) of the area, and the transmission system (6) is used to control the start and stop of the discharge machine (8), so that the two discharge machines (8) connected to each material tank (5) discharge materials at different times.

2. A large tank furnace discharge system according to claim 1, characterized in that: The transmission system (6) is used to control the synchronous operation of the outer discharge machine (81) and the inner discharge machine (82) in the area.

3. A large tank furnace discharge system according to claim 1, characterized in that: The two dischargers (8) connected to each material tank (5) are closely connected, and the contact point is blocked with refractory fiber cotton.

4. A large tank furnace discharge system according to claim 1, characterized in that: The two discharge machines (8) connected to each material tank (5) are installed in the same direction, and the installation direction of the discharge machine (8) enables the discharge machine (8) to rotate clockwise or counterclockwise to discharge material.

5. A large tank furnace discharge system as claimed in claim 4, characterized in that: The discharging machines (8) connected to adjacent row material tanks (5) in the tank furnace are installed in the same direction, while the discharging machines (8) connected to adjacent column material tanks (5) are installed in opposite directions.

6. A method for uniformly discharging materials from a large tank furnace, using a discharging system as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1, the outer discharge machines (81) of the first area (1) and the fourth area (4) discharge materials simultaneously for n seconds, at which time the other discharge machines (8) stop working; S2, the outer discharge machines (81) of the second area (2) and the third area (3) discharge materials simultaneously for n seconds, at which time the other discharge machines (8) stop working; S3, the inner discharge machines (82) of the first area (1) and the fourth area (4) discharge materials simultaneously for n seconds, and at this time, the other discharge machines (8) stop working; S4, the inner discharge machines (82) of the second area (2) and the third area (3) discharge materials simultaneously for n seconds, and at this time, the other discharge machines (8) stop working; S5. Repeat steps S1 to S4.

7. A large tank furnace uniform discharging method as claimed in claim 6, characterized in that: In steps S1-S4, the value of n is equal, and n is any value between 10 and 20.

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