Smoke extractor for graphite cathode material roasting tunnel kiln

Abstract

The utility model relates to the technical field of graphite cathode material preparation, and discloses a smoke exhaust device for a graphite cathode material roasting tunnel kiln, which comprises a main smoke exhaust pipe, one end of the main smoke exhaust pipe is provided with a processing assembly, the processing assembly comprises a filter box connected to one end of the main smoke exhaust pipe, and an isolation plate is fixed in the filter box. The interior of the filter box is separated into front and rear flue gas treatment bins by the separation plate. Smoke is exhausted into the filter box through the main smoke exhaust pipe, after the smoke is preliminarily filtered through the filter cloth, the content of particulate matter in the smoke is reduced, ash content and incomplete combustion products which are possibly generated in the combustion process are reduced, the secondary combustion efficiency is improved, then the smoke is subjected to secondary combustion in the combustion furnace, and the combustion efficiency is improved. Incompletely combusted substances in the smoke are fully combusted, then the smoke obtained after secondary combustion is discharged into the filter box to be filtered again, so that dust particles or oxides generated by secondary combustion are filtered, and the smoke is further purified.

Description

Technical Field

[0001] The utility model relates to the technical field of graphite anode material preparation, in particular to a smoke exhaust device for a roasting tunnel kiln of graphite anode material. Background Art

[0002] The roasting tunnel kiln of graphite anode material is a device specifically used for producing the anode material (graphite material) of lithium-ion batteries. Carbon materials (such as artificial graphite, natural graphite, etc.) are subjected to high-temperature roasting treatment to be converted into graphite materials with high conductivity and high specific surface area. During the roasting process, polluting flue gas will be generated. Therefore, a smoke exhaust device for a roasting tunnel kiln of graphite anode material is needed to treat the flue gas.

[0003] An existing smoke exhaust device for a roasting tunnel kiln of graphite anode material (publication number: CN213932097U) has at least the following drawbacks: The device conducts secondary combustion of the flue gas by arranging a combustion furnace at the end of the main smoke exhaust pipe, so that the pollutants that are not fully burned in the flue gas are fully burned, reducing flue gas pollution. However, before the secondary combustion of the flue gas, no pretreatment such as filtering is carried out on the flue gas, so that the flue gas contains a large amount of ash and non-combustible particles, thus affecting the effect of secondary combustion. And after the secondary combustion, no pretreatment such as filtering is carried out on the flue gas after secondary combustion, so that the new particulate matter generated after secondary combustion is discharged into the air along with the flue gas, increasing air pollution. Therefore, the present utility model is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to solve the drawbacks existing in the prior art, and to propose a smoke exhaust device for a roasting tunnel kiln of graphite anode material.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A smoke exhaust device for a roasting tunnel kiln of graphite anode material, including a main smoke exhaust pipe. One end of the main smoke exhaust pipe is provided with a treatment assembly. The treatment assembly includes a filter box connected to one end of the main smoke exhaust pipe. A partition plate is fixed inside the filter box. The partition plate separates the interior of the filter box into front and rear flue gas treatment chambers. Maintenance doors are arranged on the left side of the filter box in both flue gas treatment chambers. The main smoke exhaust pipe communicates with the flue gas treatment chamber at the rear side inside the filter box. A combustion furnace is arranged on the left side of the filter box.

[0007] As a further solution of the present utility model, mounting plates are fixedly arranged on both the left and right sides of the partition plate. An installation frame is detachably mounted on the bottom surface of the mounting plate. A filter cloth is fixedly arranged on the outer wall of the installation frame. Ventilation holes are formed on the top surface of the mounting plate. A flow pipe is connected and fixed to the rear side of the filter box near the top surface. The flow pipe is connected and fixed to the right side of the outer wall of the combustion furnace. An igniter is fixedly arranged on the front side of the outer wall of the combustion furnace. The flame spraying pipe of the igniter penetrates and extends into the interior of the combustion furnace. A connecting pipe is connected and fixed to the front side of the outer wall of the combustion furnace. The connecting pipe is fixed to the front side of the filter box and communicates with the front side flue gas treatment chamber of the filter box. A smoke outlet pipe is connected and fixed to the front side of the filter box near the top surface.

[0008] As a further solution of the present utility model, an air compressor is fixedly arranged on the right side of the filter box. A U-shaped pipe is fixedly arranged on the right side of the filter box. Both ends of the U-shaped pipe penetrate the right side of the filter box and extend into the two flue gas treatment chambers inside the filter box respectively. One end of the air compressor air delivery pipe is connected and fixed to the right side of the U-shaped pipe.

[0009] As a further solution of the present utility model, the position of the rear end opening of the U-shaped pipe corresponds to the central position of the flow pipe, and the position of the front end opening of the U-shaped pipe corresponds to the central position of the smoke outlet pipe.

[0010] As a further solution of the present utility model, a gas input pipe is connected and fixed to the left side of the combustion furnace. One end of the gas input pipe is connected to the outer wall gas supply system. The gas input pipe corresponds to the position of the flow pipe.

[0011] As a further solution of the present utility model, two first ash discharge hoppers are fixedly arranged on the bottom surface of the filter box. The two first ash discharge hoppers communicate with the two flue gas treatment chambers inside the filter box respectively. A second ash discharge hopper is connected and fixed to the bottom surface of the combustion furnace. Discharge valves are fixedly arranged at the bottom ends of the first ash discharge hopper and the second ash discharge hopper.

[0012] Compared with the prior art, the present utility model has the following beneficial effects:

[0013] The flue gas is discharged into the interior of the filter box through the main smoke exhaust pipe. After preliminary filtration by the filter cloth, the particulate matter content in the flue gas is reduced, the ash and incomplete combustion products that may be generated during the combustion process are reduced, and the efficiency of secondary combustion is improved. Subsequently, the flue gas is subjected to secondary combustion in the combustion furnace, and the incomplete combustibles in the flue gas are fully combusted, thereby purifying the flue gas. Then, the flue gas after secondary combustion is discharged into the filter box again for filtration, so that the dust particles or oxides generated by secondary combustion are filtered, and the flue gas is further purified. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a smoke exhaust device for a graphite negative electrode material roasting tunnel kiln proposed by the present utility model;

[0015] Figure 2 Schematic diagram of the three-dimensional sectional structure of the filter box of a smoke exhaust device for a roasting tunnel kiln of a graphite negative electrode material proposed by the present utility model;

[0016] Figure 3 Schematic diagram of the three-dimensional structure at the mounting frame of a smoke exhaust device for a roasting tunnel kiln of a graphite negative electrode material proposed by the present utility model;

[0017] Figure 4 Schematic diagram of the three-dimensional structure at the combustion furnace of a smoke exhaust device for a roasting tunnel kiln of a graphite negative electrode material proposed by the present utility model.

[0018] In the figure: 1, main smoke exhaust pipe; 2, filter box; 201, partition board; 202, combustion furnace; 203, mounting plate; 204, mounting frame; 205, filter cloth; 206, flow pipe; 207, igniter; 208, connecting pipe; 209, smoke outlet pipe; 210, ventilation hole; 3, air compressor; 301, U-shaped pipe; 4, gas input pipe; 5, first ash hopper; 501, second ash hopper. Detailed implementation manners

[0019] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0020] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0021] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" 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 directly connected or indirectly connected through an intermediate medium, and can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0022] Such as Figures 1-4As shown in the figure, a smoke exhaust device for a roasting tunnel kiln of a graphite anode material includes a main smoke exhaust pipe 1. One end of the main smoke exhaust pipe 1 is provided with a treatment component. The treatment component includes a filter box 2 connected to one end of the main smoke exhaust pipe 1. Inside the filter box 2, a partition plate 201 is fixed. The partition plate 201 separates the interior of the filter box 2 into front and rear flue gas treatment chambers. Inspection doors are provided on the left side of the filter box 2 in both flue gas treatment chambers. The main smoke exhaust pipe 1 communicates with the flue gas treatment chamber at the rear side inside the filter box 2. A combustion furnace 202 is provided on the left side of the filter box 2.

[0023] As Figures 2-4 As shown in the figure, in this embodiment, mounting plates 203 are fixed on both the left and right sides of the partition plate 201. An installation frame 204 is detachably mounted on the bottom surface of the mounting plate 203. A filter cloth 205 is fixed on the outer wall of the installation frame 204. Vent holes 210 are provided on the top surface of the mounting plate 203. A flow pipe 206 is connected and fixed near the top surface at the rear side of the filter box 2. The flow pipe 206 is connected and fixed to the outer wall on the right side of the combustion furnace 202. An igniter 207 is fixed on the front side of the outer wall of the combustion furnace 202. The flame spraying pipe of the igniter 207 extends through and into the interior of the combustion furnace 202. A connecting pipe 208 is connected and fixed on the front side of the outer wall of the combustion furnace 202. The connecting pipe 208 is fixed to the front side of the filter box 2 and communicates with the front flue gas treatment chamber of the filter box 2. A smoke outlet pipe 209 is connected and fixed near the top surface at the front side of the filter box 2. The flue gas is discharged into the interior of the filter box 2 through the main smoke exhaust pipe 1. After preliminary filtration by the filter cloth 205, the particulate matter content in the flue gas is reduced, the ash and incomplete combustion products that may be generated during the combustion process are reduced, and the efficiency of secondary combustion is improved. Subsequently, the flue gas is subjected to secondary combustion in the combustion furnace 202, and the incomplete combustibles in the flue gas are fully burned, thereby purifying the flue gas. Then, the flue gas after secondary combustion is discharged into the filter box 2 again for filtration, so that the dust particles or oxides generated by secondary combustion are filtered, and the flue gas is further purified.

[0024] As Figures 2-4 As shown in the figure, in this embodiment, an air compressor 3 is fixed on the right side of the filter box 2. A U-shaped pipe 301 is fixed on the right side of the filter box 2. Both ends of the U-shaped pipe 301 penetrate through the right side of the filter box 2 and extend into the two flue gas treatment chambers inside the filter box 2 respectively. One end of the air delivery pipe of the air compressor 3 is connected and fixed to the right side of the U-shaped pipe 301. By means of the air compressor 3, air can be continuously input into the interior of the filter box 2, so that the air inside the filter box 2 can flow into or out of the filter box 2 faster, and at the same time, air can be input into the interior of the combustion furnace 202 to assist the flue gas in secondary combustion.

[0025] As Figures 2-4As shown, in this embodiment, the position of the rear-end opening of the U-shaped tube 301 corresponds to the central position of the flow tube 206, and the position of the front-end opening of the U-shaped tube 301 corresponds to the central position of the smoke outlet tube 209. By setting the position of the rear-end opening of the U-shaped tube 301 to correspond to the central position of the flow tube 206 and the position of the front-end opening of the U-shaped tube 301 to correspond to the central position of the smoke outlet tube 209, the airflow discharged from the U-shaped tube 301 can better mix with the flue gas and flow to the filter box 2 faster or be discharged from the filter box 2 faster.

[0026] As Figures 2-4 shown, in this embodiment, a gas input pipe 4 is connected and fixed to the left side of the combustion furnace 202. One end of the gas input pipe 4 is connected to an external wall gas supply system. The gas input pipe 4 corresponds to the position of the flow tube 206. By setting the gas input pipe 4, the external gas supply system can input natural gas into the combustion furnace 202 through the gas input pipe 4, which can assist the combustion furnace 202 in performing secondary combustion on the flue gas and prevent the flue gas from having a low combustible content and being unable to be ignited.

[0027] As Figures 2-4 shown, in this embodiment, two first ash discharge hoppers 5 are fixed to the bottom surface of the filter box 2. The two first ash discharge hoppers 5 are respectively communicated with two flue gas treatment chambers inside the filter box 2. A second ash discharge hopper 501 is connected and fixed to the bottom surface of the combustion furnace 202. Discharge valves are fixed to the bottom ends of the first ash discharge hopper 5 and the second ash discharge hopper 501. By setting the first ash discharge hopper 5 and the second ash discharge hopper 501, after the flue gas is treated, the discharge valves of the first ash discharge hopper 5 and the second ash discharge hopper 501 can be opened to discharge the combustion ashes inside the filter box 2 and the combustion furnace 202.

[0028] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: During use, the main exhaust pipe 1 discharges the flue gas into the flue gas treatment chamber behind the filter box 2 and filters it through the filter cloth 205. The air compressor 3 continuously inputs air into the filter box 2 through the U-shaped pipe 301, causing the air in the flue gas treatment chamber behind the filter box 2 to continuously enter the combustion furnace 202 through the flow pipe 206, so that the flue gas is quickly driven into the combustion furnace 202. Subsequently, the external gas supply system inputs natural gas into the combustion furnace 202 through the gas input pipe 4 and mixes it with the air and flue gas. At this time, the igniter 207 starts to burn the flue gas to perform secondary combustion on the flue gas. Then, the flue gas after secondary combustion is discharged into the flue gas treatment chamber in front of the filter box 2 through the connecting pipe 208, and then filtered through the filter cloth 205 again. Finally, it is discharged into the air through the smoke outlet pipe 209 with the airflow generated by the U-shaped pipe 301. By setting the position of the rear end opening of the U-shaped pipe 301 to correspond to the central position of the flow pipe 206 and the position of the front end opening of the U-shaped pipe 301 to correspond to the central position of the smoke outlet pipe 209, the airflow discharged from the U-shaped pipe 301 can better mix with the flue gas and flow to the filter box 2 faster or be discharged from the filter box 2 faster. By setting the first ash hopper 5 and the second ash hopper 501, after the flue gas treatment, the discharge valves of the first ash hopper 5 and the second ash hopper 501 can be opened to discharge the combustion ashes inside the filter box 2 and the combustion furnace 202.

[0029] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A smoke exhaust device for a roasting tunnel kiln of a graphite anode material, comprising a main smoke exhaust pipe (1), characterized in that, One end of the main exhaust pipe (1) is provided with a treatment component, and the treatment component includes a filter box (2) connected to one end of the main exhaust pipe (1). An isolation plate (201) is fixed inside the filter box (2). The isolation plate (201) separates the interior of the filter box (2) into front and rear flue gas treatment chambers. Maintenance doors are provided on the left side of the filter box (2) in both flue gas treatment chambers. The main exhaust pipe (1) communicates with the flue gas treatment chamber at the rear side inside the filter box (2), and a combustion furnace (202) is provided on the left side of the filter box (2).

2. The smoke exhaust device for a roasting tunnel kiln of a graphite anode material according to claim 1, wherein, Mounting plates (203) are fixed on both the left and right sides of the isolation plate (201). A mounting frame (204) is detachably mounted on the bottom surface of the mounting plate (203). A filter cloth (205) is fixed on the outer wall of the mounting frame (204). Vent holes (210) are formed on the top surface of the mounting plate (203). A flow pipe (206) is connected and fixed to the rear side of the filter box (2) near the top surface. The flow pipe (206) is connected and fixed to the right side outer wall of the combustion furnace (202). An igniter (207) is fixed on the front side outer wall of the combustion furnace (202). The flame spraying pipe of the igniter (207) penetrates and extends into the interior of the combustion furnace (202). A connecting pipe (208) is connected and fixed to the front side outer wall of the combustion furnace (202). The connecting pipe (208) is fixed to the front side of the filter box (2) and communicates with the front flue gas treatment chamber of the filter box (2). An exhaust pipe (209) is connected and fixed to the front side of the filter box (2) near the top surface.

3. The smoke exhaust device for a calcining tunnel kiln of a graphite anode material, according to claim 2, is characterized in that, An air compressor (3) is fixed on the right side of the filter box (2). A U-shaped pipe (301) is fixed on the right side of the filter box (2). Both ends of the U-shaped pipe (301) penetrate the right side of the filter box (2) and extend into the two flue gas treatment chambers inside the filter box (2) respectively. One end of the air compressor (3)'s air delivery pipe is connected and fixed to the right side of the U-shaped pipe (301).

4. The smoke exhaust device for a roasting tunnel kiln of a graphite anode material, according to claim 3, wherein, The position of the rear end opening of the U-shaped pipe (301) corresponds to the central position of the flow pipe (206), and the position of the front end opening of the U-shaped pipe (301) corresponds to the central position of the exhaust pipe (209).

5. The smoke exhaust device for a roasting tunnel kiln of a graphite anode material according to claim 4, wherein, A gas input pipe (4) is connected and fixed to the left side of the combustion furnace (202). One end of the gas input pipe (4) is connected to the external gas supply system. The gas input pipe (4) corresponds to the position of the flow pipe (206).

6. The smoke exhaust device for a roasting tunnel kiln of a graphite anode material according to claim 5, characterized in that, Two first ash discharge hoppers (5) are fixed on the bottom surface of the filter box (2). The two first ash discharge hoppers (5) communicate with the two flue gas treatment chambers inside the filter box (2) respectively. A second ash discharge hopper (501) is connected and fixed to the bottom surface of the combustion furnace (202). Discharge valves are fixed at the bottom ends of the first ash discharge hopper (5) and the second ash discharge hopper (501).

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