Graphite electrode baking furnace tail gas recycling equipment

Abstract

The utility model belongs to graphite electrode baking furnace tail gas treatment technical field, and disclose graphite electrode baking furnace tail gas recycling equipment, including workstation and install the processing box of workstation upper surface, the surface of processing box is equipped with the accelerating flow subassembly, accelerating flow subassembly includes installing accelerating box of workstation upper surface and installing the air inlet pipe and the support for accelerating flow of accelerating box upper surface, fan pump, flow pipe, drainage tube, filter disc, dispersion plate, the inside installing of accelerating box has two -stage flow subassembly, two -stage flow subassembly includes installing the branch board of accelerating box inside upper surface, the utility model has can to tail gas carry out accelerating flow processing, makes tail gas treatment efficiency increase, has improved the efficiency of tail gas purification recycling greatly, efficient recycling, the advantage of production efficiency and energy utilization rate promotion.

Description

Technical Field

[0001] This utility model belongs to the field of graphite electrode calcining furnace exhaust gas treatment technology, specifically a graphite electrode calcining furnace exhaust gas recycling device. Background Technology

[0002] In the production process of graphite electrodes, calcination is a crucial core step. This step requires heating the green electrode under specific temperature conditions to decompose the organic matter inside the electrode and stabilize its structure. However, during the calcination process, the graphite electrode calcination furnace generates a large amount of exhaust gas containing various components. If this exhaust gas is directly emitted into the atmosphere, it will not only cause serious environmental pollution and violate current stringent environmental regulations, but also lead to the waste of the heat energy contained in the exhaust gas and some recyclable materials, which is inconsistent with the industry development trend of energy recycling and green production. To address this, the industry has gradually developed and applied graphite electrode calcining furnace exhaust gas recycling equipment. This aims to collect, treat, and purify the exhaust gas, then recycle it back to the calcining furnace or other production processes, thereby reducing energy consumption, decreasing pollutant emissions, and improving the overall efficiency of resource utilization. Currently available graphite electrode calcining furnace exhaust gas recycling equipment typically consists of an exhaust gas collection device, a purification unit, a circulation pipeline, and a control system, which can basically achieve the initial function of collecting and recycling exhaust gas. However, in practical applications, it is impossible to effectively transport and accelerate the exhaust gas entering the circulation system. After the exhaust gas from the roasting furnace is generated, the small amount of tiny particles or viscous substances that may remain in the exhaust gas will further increase the flow resistance of the exhaust gas. The existing equipment's circulation pipeline can only rely on the weak pressure difference of the exhaust gas itself to flow, and lacks a dedicated and efficient transport and acceleration mechanism to supplement the kinetic energy of the exhaust gas and break the limitation of flow resistance.

[0003] Therefore, a graphite electrode calcination furnace exhaust gas recycling device is proposed to address the above problems. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a graphite electrode calcination furnace tail gas recycling device, which can accelerate the flow of tail gas, thereby increasing the tail gas treatment efficiency, greatly improving the efficiency of tail gas purification and recycling, and achieving high-efficiency recycling and utilization, thus improving production efficiency and energy utilization.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a graphite electrode calcination furnace tail gas recycling device, including a workbench and a processing box installed on the upper surface of the workbench; The surface of the processing box is equipped with an accelerated flow assembly, which includes an acceleration box mounted on the upper surface of the workbench, an air inlet pipe mounted on the upper surface of the acceleration box, and a support, fan pump, flow pipe, drainage pipe, filter disc, and dispersion plate for accelerating flow. The accelerator chamber is equipped with a secondary flow assembly, which includes a branch plate installed on the upper surface of the accelerator chamber, a branch pipe installed on the upper surface of the branch plate, an inclined pipe for accelerating the flow, and a one-way valve.

[0006] Preferably, the acceleration chamber and the processing chamber are connected by a pipeline, the bracket is disposed on one side surface of the acceleration chamber, the fan pump is installed on the side surface of the bracket away from the processing chamber, a flow pipe is installed on the other side surface of the bracket, the drain pipe is installed at the air outlet end of the flow pipe, the filter disc is snapped onto the air outlet end of the drain pipe by a clip, the dispersion plate is disposed inside the acceleration chamber, and the drain pipe is connected to the dispersion plate.

[0007] Preferably, a sealing plate is installed on the upper end face of the dispersion plate. The sealing plate is snapped into a slot opened on the surface of the acceleration box, and a bolt is threaded into a threaded hole opened on the surface of the sealing plate. One end of the bolt passes through the sealing plate and is threaded into the threaded hole opened on the surface of the acceleration box.

[0008] Preferably, a fixing plate is symmetrically mounted on the surface of the drainage tube, and the fixing plate and the acceleration box are detachably connected by bolts.

[0009] Preferably, each of the four corners of the bracket is equipped with a plug, which is inserted into a socket on the surface of the accelerator box.

[0010] Preferably, one end of the branch pipe passes through the accelerator box and extends above the accelerator box, and is connected to the inclined pipe, which is connected to the intake pipe, and the one-way valve is installed on the surface of the branch pipe.

[0011] Preferably, the branch plate is connected to the dispersion plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model incorporates an accelerated flow component. By installing the accelerated flow component on the surface of the treatment box, the fan pump provides power, and the flow pipe and guide pipe guide the airflow, directly supplementing the kinetic energy of the exhaust gas. This breaks the limitation of existing equipment that relies solely on the pressure difference of the exhaust gas itself for flow, effectively increasing the exhaust gas flow rate and avoiding the problems of low purification efficiency and energy waste caused by slow flow rate.

[0013] 2. This utility model sets up a two-stage flow component, which further divides the dispersed gas through branch plates and branch pipes. Combined with the inclined structure of the inclined pipe, the exhaust gas is accelerated. With the help of a one-way valve to prevent backflow of airflow, the exhaust gas velocity and pressure are more stable, which meets the requirements of the roasting process for the stability of exhaust gas supply, ensures the stability of product quality, and allows the heat energy in the exhaust gas to be recovered more fully. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the acceleration chamber of this utility model; Figure 3 This is a schematic diagram of the structure of the bracket and fan pump of this utility model; Figure 4 This is a schematic diagram of the structure of the dispersion plate and sealing plate of this utility model; Figure 5 This is a schematic diagram of the structure of the secondary flow component of this utility model.

[0015] In the diagram: 1. Workbench; 12. Processing box; 2. Accelerated flow assembly; 21. Accelerator box; 22. Inlet pipe; 23. Support; 24. Fan pump; 25. Flow pipe; 26. Drain pipe; 27. Dispersion plate; 28. Sealing plate; 29. ​​Fixing plate; 210. Insert strip; 211. Filter disc; 3. Secondary flow assembly; 31. Branch plate; 32. Branch pipe; 33. Inclined pipe; 34. Check valve. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] like Figures 1 to 5 As shown, this utility model provides a graphite electrode calcination furnace tail gas recycling device, including a workbench 1 and a processing box 12 installed on the upper surface of the workbench 1. The surface of the processing box 12 is equipped with an accelerated flow assembly 2. The accelerated flow assembly 2 includes an acceleration box 21 installed on the upper surface of the workbench 1, an air inlet pipe 22 installed on the upper surface of the acceleration box 21, and a support 23, a fan pump 24, a flow pipe 25, a diversion pipe 26, a filter disc 211, and a dispersion plate 27 for accelerating flow. The acceleration chamber 21 and the treatment chamber 12 are connected by a pipeline. The bracket 23 is set on one side surface of the acceleration chamber 21. The fan pump 24 is installed on the side surface of the bracket 23 away from the treatment chamber 12. The flow pipe 25 is installed on the other side surface of the bracket 23. The drain pipe 26 is installed at the air outlet of the flow pipe 25. The filter disc 211 is snapped to the air outlet of the drain pipe 26 by a clip. The dispersion plate 27 is set inside the acceleration chamber 21, and the drain pipe 26 is connected to the dispersion plate 27. By setting the acceleration flow component 2 on the surface of the treatment chamber 12, the fan pump 24 provides power, and the flow pipe 25 and the drain pipe 26 guide the airflow, directly supplementing the kinetic energy of the exhaust gas. This breaks the limitation of existing equipment that only relies on the pressure difference of the exhaust gas itself for flow, effectively improves the exhaust gas flow rate, and avoids the problems of low purification efficiency and energy waste caused by slow flow rate.

[0018] A sealing plate 28 is installed on the upper surface of the dispersion plate 27. The sealing plate 28 is snapped into a slot on the surface of the accelerator box 21. A bolt is threaded into a threaded hole on the surface of the sealing plate 28, and one end of the bolt passes through the sealing plate 28 and is threaded into the threaded hole on the surface of the accelerator box 21. The sealing plate 28 on the upper surface of the dispersion plate 27 is snapped into the slot of the accelerator box 21 and is double-fixed by bolts, which can effectively seal the gap between the accelerator box 21 and the dispersion plate 27, preventing the exhaust gas after acceleration from leaking from the gap. This avoids environmental pollution, reduces exhaust gas waste, and ensures recycling efficiency. The sealing plate 28 is detachably connected to the accelerator box 21 by bolts. When it is necessary to clean, repair or replace the dispersion plate 27, only the bolts need to be removed and the sealing plate 28 needs to be removed. There is no need to disassemble the entire structure of the accelerator box 21, simplifying the maintenance process and reducing maintenance time and costs.

[0019] A fixing plate 29 is symmetrically installed on the surface of the drainage tube 26. The fixing plate 29 and the acceleration box 21 are detachably connected by bolts, which can firmly fix the drainage tube 26 on the acceleration box 21. When the filter plate 211 is replaced, it can be quickly disassembled for inspection or replacement.

[0020] Insert strips 210 are installed at each of the four corners of the bracket 23. The insert strips 210 are inserted into the sockets on the surface of the acceleration box 21. During installation, the bracket 23 can be quickly positioned by the cooperation of the insert strips 210 and the sockets, ensuring that the bracket 23 is installed accurately.

[0021] The acceleration chamber 21 is equipped with a secondary flow assembly 3. The secondary flow assembly 3 includes a branch plate 31 installed on the upper surface of the inside of the acceleration chamber 21, a branch pipe 32 installed on the upper surface of the branch plate 31, an inclined pipe 33 for accelerating the flow, and a one-way valve 34. One end of the branch pipe 32 passes through the acceleration box 21 and extends to the top of the acceleration box 21, and is connected to the inclined pipe 33. The inclined pipe 33 is connected to the air inlet pipe 22. The one-way valve 34 is installed on the surface of the branch pipe 32. The dispersed gas is further divided through the branch plate 31 and the branch pipe 32. Combined with the inclined structure of the inclined pipe 33, the exhaust gas is accelerated. The one-way valve 34 prevents the airflow from flowing back, making the exhaust gas velocity and pressure more stable, meeting the requirements of the roasting process for the stability of the exhaust gas supply, ensuring stable product quality, and allowing the heat energy in the exhaust gas to be recovered more fully.

[0022] The branch plate 31 is connected to the dispersion plate 27, allowing the gas that has been uniformly dispersed by the dispersion plate 27 to directly and completely enter the branch plate 31.

[0023] The structure of the treatment box 12 is existing technology, and its working principle is a well-known technology. The appropriate model is selected according to actual use. The exhaust gas first enters the primary filtration layer of the treatment box 12. This layer is equipped with a high-precision filter screen or filter media (such as ceramic filter tubes, activated carbon adsorption layers, etc.) to further remove residual small particles, sticky organic matter, and other impurities in the exhaust gas. The exhaust gas after deep filtration enters the harmful component treatment layer. For pollutants such as sulfides, nitrogen oxides, and volatile organic compounds (VOCs) that may be contained in the roasting exhaust gas, chemical absorption (such as spray absorption towers) and catalytic conversion (such as catalytic oxidation) are used. Using methods such as oxidation devices, harmful components are converted into harmless or easily treated substances (such as sulfates, nitrogen, etc.), ensuring that the exhaust gas emissions or recycling meet environmental protection standards and production safety requirements. Considering that the roasting exhaust gas contains a certain amount of heat energy, a heat exchange layer (such as a tubular heat exchanger or a plate heat exchanger) can be integrated into the treatment box 12 to allow the high-temperature exhaust gas to exchange heat with the low-temperature medium (such as cold water or cold air). After the exhaust gas releases heat energy, its temperature decreases, which facilitates subsequent treatment or transportation. The heated medium can be used as a preheating energy source for the roasting furnace, a heat source for workshop heating, etc., to realize the recovery and reuse of heat energy in the exhaust gas and reduce energy waste.

[0024] Working principle and process: The exhaust gas generated by the graphite electrode calcination furnace is first guided to the air inlet pipe 22 of the equipment through the external collection pipeline. The exhaust gas enters the pretreatment area of ​​the acceleration box 21 through the air inlet pipe 22 to prepare for subsequent acceleration and treatment. At this time, the acceleration flow component 2 installed on one side of the acceleration box 21 starts synchronously, and the fan pump 24, which serves as the primary acceleration power source, starts to operate. The fan pump 24 is fixed to the side of the acceleration box 21 by the bracket 23. The inserts 210 at the four corners of the bracket 23 are inserted into the insertion holes of the acceleration box 21 to ensure the stability of the fan pump 24 during operation. The power generated by the operation of the fan pump 24 is transmitted to the diversion pipe 26 through the flow pipe 25. The fixing plate 29 on the surface of the diversion pipe 26 is detachably connected to the acceleration box 21 by bolts to ensure the airtightness during the airflow delivery process. Driven by the power of the fan pump 24, the airflow enters the diversion pipe 26 along the flow pipe 25 and first passes through the filter disc 211 installed at the air outlet of the diversion pipe 26. The filter disc 211 is fastened to the diversion pipe 26 by a clip and can be easily disassembled and replaced. Its main function is to filter out small particles and sticky impurities in the airflow. The filtered airflow enters the acceleration chamber 21 through the guide pipe 26 and is then conveyed to the dispersion plate 27. The sealing plate 28 on the upper surface of the dispersion plate 27 is engaged in a slot within the acceleration chamber 21 and fixed to it with bolts, ensuring both the airtightness of the acceleration chamber 21 and facilitating subsequent maintenance of the dispersion plate 27. The dispersion plate 27 evenly disperses the centrally conveyed gas into different areas within the acceleration chamber 21. The exhaust gas is then conveyed by the airflow to the treatment chamber 12, thereby achieving purification and recycling of the exhaust gas. Since the branch plate 31 is connected to the dispersion plate 27, part of the dispersed gas enters the branch pipe 32 through the branch plate 31. One end of the branch pipe 32 extends through the acceleration box 21 to its top and connects to the inclined pipe 33. The inclined pipe 33 is then connected to the intake pipe 22, forming a secondary circulation acceleration channel for the exhaust gas. During the flow of gas along the branch pipe 32, the one-way valve 34 plays a key role in preventing backflow and avoiding exhaust gas from entering. At the same time, the inclined structure of the inclined pipe 33, combined with the airflow introduced by the intake pipe 22, further increases the flow velocity of the exhaust gas, realizing secondary acceleration of the exhaust gas and stabilizing the exhaust gas flow rate and pressure. After completing the secondary acceleration, the exhaust gas, under stable flow rate and pressure, enters the treatment box 12 installed on the upper surface of the workbench 1 through the connecting pipeline between the acceleration box 21 and the treatment box 12. The treatment box 12 further purifies and recovers heat energy from the exhaust gas (such as desulfurization, denitrification, waste heat exchange, etc., specifically configured according to actual production needs). Finally, the qualified exhaust gas containing usable heat energy is transported back to the graphite electrode calcining furnace or other production links according to the production process requirements, realizing the recycling of exhaust gas and reducing energy consumption and pollutant emissions.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A graphite electrode calcination furnace exhaust gas recycling device, including a workbench (1) and a processing box (12) installed on the upper surface of the workbench (1). characterized in that The surface of the processing box (12) is equipped with an acceleration flow assembly (2), which includes an acceleration box (21) installed on the upper surface of the workbench (1), an air inlet pipe (22) installed on the upper surface of the acceleration box (21), and a support (23), a fan pump (24), a flow pipe (25), a drainage pipe (26), a filter disc (211), and a dispersion plate (27) for accelerating flow. The acceleration chamber (21) is equipped with a secondary flow assembly (3). The secondary flow assembly (3) includes a branch plate (31) installed on the upper surface of the inside of the acceleration chamber (21), a branch pipe (32) installed on the upper surface of the branch plate (31), an inclined pipe (33) for accelerating the flow, and a one-way valve (34).

2. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: The acceleration box (21) and the processing box (12) are connected by a pipeline. The bracket (23) is set on one side surface of the acceleration box (21). The fan pump (24) is installed on the side surface of the bracket (23) away from the processing box (12). A flow pipe (25) is installed on the other side surface of the bracket (23). The drain pipe (26) is installed at the air outlet end of the flow pipe (25). The filter disc (211) is snapped onto the air outlet end of the drain pipe (26) by a clip. The dispersion plate (27) is set inside the acceleration box (21), and the drain pipe (26) is connected to the dispersion plate (27).

3. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: A sealing plate (28) is installed on the upper end face of the dispersion plate (27). The sealing plate (28) is snapped into a slot opened on the surface of the acceleration box (21). A bolt is threaded into a threaded hole opened on the surface of the sealing plate (28). One end of the bolt passes through the sealing plate (28) and is threaded into the threaded hole opened on the surface of the acceleration box (21).

4. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: The surface of the drainage tube (26) is symmetrically equipped with a fixing plate (29), and the fixing plate (29) and the acceleration box (21) are detachably connected by bolts.

5. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: Each of the four corners of the bracket (23) is equipped with a strip (210), which is inserted into a socket on the surface of the accelerator box (21).

6. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: One end of the branch pipe (32) passes through the acceleration box (21) and extends above the acceleration box (21), and is connected to the inclined pipe (33). The inclined pipe (33) is connected to the intake pipe (22), and the one-way valve (34) is installed on the surface of the branch pipe (32).

7. The graphite electrode baking furnace tail gas recycling equipment according to claim 1, characterized in that: The branch plate (31) is connected to the dispersion plate (27).

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