Heat preservation device for furnace bottom plate of aluminum electrolysis cell
By introducing high-temperature flue gas into the insulation device of the aluminum electrolysis cell furnace bottom plate for heating and insulation, the problems of energy waste and increased production costs caused by direct emission of high-temperature flue gas are solved, and the effective utilization of heat and cost reduction are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANSHAN ALUMINUM CO LTD OF THE 8TH DIVISION OF XINJIANG
- Filing Date
- 2025-04-09
- Publication Date
- 2026-05-15
AI Technical Summary
The direct emission of high-temperature flue gas from aluminum electrolysis cells leads to energy waste and environmental pollution, while existing heating methods increase production costs and energy consumption.
A bottom plate insulation device for aluminum electrolysis cell furnace is designed. High-temperature flue gas is guided to the transmission pipeline by the induced draft component, and the heat dissipation component is used to disperse the heat into the insulation shell to heat and insulate the bottom plate. The remaining flue gas is discharged through the return component.
By making full use of the heat from the high-temperature flue gas, the heat demand of the heating base plate is reduced, thereby reducing energy consumption and production costs.
Smart Images
Figure CN224243242U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of aluminum electrolysis production equipment, and in particular to a heat preservation device for the bottom plate of an aluminum electrolysis cell. Background Technology
[0002] During the aluminum electrolysis production process, the aluminum electrolysis cell generates a large amount of high-temperature flue gas. This flue gas carries a significant amount of waste heat, and direct discharge would not only result in a huge waste of energy but also potentially cause thermal pollution to the environment. Meanwhile, the insulation of the furnace bottom plate of the aluminum electrolysis cell is crucial for maintaining the thermal balance of the cell, improving current efficiency, reducing energy consumption, and extending the cell's service life. Especially for the currently promoted fully graphitized cathode, proper furnace bottom insulation plays a key role in reducing the furnace bottom voltage drop.
[0003] In the existing technology, the high-temperature flue gas generated by aluminum electrolysis cells is directly discharged into the waste gas treatment equipment for treatment. This not only wastes a lot of heat, but also increases the operating burden of the waste gas treatment equipment. At the same time, the furnace bottom is heated by electric heating or steam heating, which increases the production cost and energy consumption of enterprises. Utility Model Content
[0004] In view of this, the present utility model provides a furnace bottom plate insulation device for aluminum electrolysis cells. The main purpose is to provide a furnace bottom plate insulation device for aluminum electrolysis cells that can use the high-temperature flue gas generated in the aluminum electrolysis cell for furnace bottom heating and insulation.
[0005] To achieve the above objectives, this utility model mainly provides the following technical solutions:
[0006] This utility model embodiment provides a heat preservation device for the bottom plate of an aluminum electrolysis cell furnace, the device comprising:
[0007] An exhaust component, comprising a tank, an air intake component, and a return component, wherein the tank comprises a tank shell and a bottom plate, the bottom plate is disposed on the upper part of the tank shell, the air intake component is disposed on the upper part of the tank shell and covers the tank shell, and one end of the return component is connected to the air intake component;
[0008] The insulation component includes an insulation shell, a transmission pipe, and a heat dissipation component. The insulation shell is disposed at the lower part of the base plate and covers the base plate. The transmission pipe is disposed between the insulation shell and the base plate. One end of the transmission pipe is connected to the air intake component, and the other end is connected to the other end of the return component. The heat dissipation component is installed on the transmission pipe.
[0009] Furthermore, the air-expelling component includes an air-expelling housing, an air-expelling duct, and an air-expelling fan. The air-expelling housing is installed on the upper part of the tank shell, the side of the air-expelling duct is connected to the air-expelling housing, one end of the air-expelling duct is connected to one end of the air-expelling fan, and the other end of the air-expelling fan is connected to the transmission duct.
[0010] Furthermore, the air intake housing includes multiple air intake channels, one end of which is detachably connected to the upper part of the tank housing, and the other end is fixedly connected to the air intake pipe.
[0011] Furthermore, the induced draft component also includes a control valve, which is disposed between the induced draft fan and the induced draft duct.
[0012] Furthermore, the transmission pipes are arranged in a zigzag or serpentine pattern.
[0013] Furthermore, the heat dissipation component includes multiple heat sink assemblies, which are arranged perpendicular to the transmission pipe.
[0014] Furthermore, the control system includes a main controller, a data acquisition sensor, and a flow regulating valve. The data acquisition sensor is inserted into the insulation housing, the flow regulating valve is disposed between the control valve and the induced draft fan, and the main controller is connected to the data acquisition sensor, the flow regulating valve, and the induced draft fan respectively.
[0015] Furthermore, the material of the insulation shell is a composite material of ceramic fiber felt and aerogel.
[0016] Compared with the prior art, the present invention has the following technical effects:
[0017] In the technical solution provided by this utility model embodiment, the function of the exhaust component is to guide the high-temperature flue gas generated in the tank to the bottom plate. The exhaust component includes a tank body, an exhaust fan, and a return fan. The tank body includes a tank shell and a bottom plate. The bottom plate is disposed on the upper part of the tank shell. The exhaust fan is disposed on the upper part of the tank shell and covers the tank shell. One end of the return fan is connected to the exhaust fan. The function of the insulation component is to heat and insulate the bottom plate. The insulation component includes an insulation shell, a transmission pipe, and a heat dissipation component. The insulation shell is disposed on the lower part of the bottom plate and covers the bottom plate. The transmission pipe is disposed between the insulation shell and the bottom plate. One end of the transmission pipe is connected to the exhaust fan, and the other end is connected to the other end of the return fan. The heat dissipation component is installed... In the aforementioned transmission pipeline, compared to existing technologies, the high-temperature flue gas generated by the aluminum electrolysis cell is directly discharged into the waste gas treatment equipment for processing. This not only wastes a large amount of heat but also increases the operating burden of the waste gas treatment equipment. At the same time, the furnace bottom is heated by electric heating or steam heating, thereby increasing the enterprise's production costs and energy consumption. In this technical solution, the high-temperature flue gas generated in the cell is guided to the transmission pipeline by the induced draft component, and the heat dissipation component disperses the heat of the high-temperature flue gas into the insulation shell to heat and insulate the bottom plate. The remaining flue gas is discharged through the return component. This not only guides the high-temperature flue gas into the insulation shell to heat and insulate the bottom plate, making full use of the heat generated by the high-temperature flue gas, but also reduces the heat required to heat the bottom plate, thereby achieving the technical effect of reducing the enterprise's energy consumption and production costs. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the main structure of an aluminum electrolysis cell furnace bottom plate insulation device provided in an embodiment of the present invention;
[0019] Figure 2 This is a top view of a heat preservation device for the bottom plate of an aluminum electrolysis cell, provided in an embodiment of this utility model. Detailed Implementation
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.
[0021] like Figure 1 and Figure 2 As shown in the figure, this utility model embodiment provides a heat preservation device for the bottom plate of an aluminum electrolysis cell furnace, the device comprising:
[0022] The exhaust component includes a tank, an air intake component, and a return component 13. The tank includes a tank shell 111 and a bottom plate 112. The bottom plate 112 is located on the upper part of the tank shell 111. The air intake component is located on the upper part of the tank shell 111 and covers the tank shell 111. One end of the return component 13 is connected to the air intake component.
[0023] The insulation component includes an insulation shell 21, a transmission pipe 22, and a heat dissipation component 23. The insulation shell 21 is located at the lower part of the base plate 112 and covers the base plate 112. The transmission pipe 22 is located between the insulation shell 21 and the base plate 112. One end of the transmission pipe 22 is connected to the air intake component, and the other end is connected to the other end of the return component 13. The heat dissipation component 23 is installed on the transmission pipe 22.
[0024] In the technical solution provided by this utility model embodiment, the function of the exhaust component is to guide the high-temperature flue gas generated in the tank to the bottom plate 112. The exhaust component includes a tank body, an exhaust fan, and a return flow component 13. The tank body includes a tank shell 111 and a bottom plate 112. The bottom plate 112 is located on the upper part of the tank shell 111. The exhaust fan is located on the upper part of the tank shell 111 and covers the tank shell 111. One end of the return flow component 13 is connected to the exhaust fan. The function of the insulation component is to heat and insulate the bottom plate 112. The insulation component includes an insulation shell 21, a transmission pipe 22, and a heat dissipation component 23. The insulation shell 21 is located on the lower part of the bottom plate 112 and covers the bottom plate 112. The transmission pipe 22 is located between the insulation shell 21 and the bottom plate 112. One end of the transmission pipe 22 is connected to the exhaust fan, and the other end is connected to the other end of the return flow component 13. The heat dissipation component 23 is installed on the transmission fan. In contrast to existing technologies, the high-temperature flue gas generated by aluminum electrolysis cells is directly discharged into waste gas treatment equipment for processing. This not only wastes a large amount of heat but also increases the operating burden of the waste gas treatment equipment. At the same time, the furnace bottom is heated by electric heating or steam heating, which increases the production cost and energy consumption of the enterprise. In this technical solution, the high-temperature flue gas generated in the cell is guided to the transmission pipeline 22 by the induced draft component, and the heat dissipation component 23 disperses the heat of the high-temperature flue gas into the insulation shell 21 to heat and insulate the bottom plate 112. The remaining flue gas is discharged through the return component 13. This not only guides the high-temperature flue gas into the insulation shell 21 to heat and insulate the bottom plate 112, making full use of the heat generated by the high-temperature flue gas, but also reduces the heat required to heat the bottom plate 112, thereby achieving the technical effect of reducing the enterprise's energy consumption and production costs.
[0025] The function of the aforementioned exhaust components is to guide the high-temperature flue gas generated in the tank to the bottom plate 112. The exhaust components include the tank body, the induced draft component, and the return flow component 13. The tank body includes a tank shell 111 and a bottom plate 112. The bottom plate 112 is located on the upper part of the tank shell 111. The induced draft component is located on the upper part of the tank shell 111 and covers the tank shell 111. One end of the return flow component 13 is connected to the induced draft component. The tank shell 111 is installed on the upper part of the bottom plate 112. The tank shell 111 is used for aluminum electrolysis production, and a large amount of high-temperature flue gas is generated during the production process. The induced draft component includes an induced draft housing 121, an induced draft pipe 122, and an induced draft fan 123. The induced draft housing 121 is installed on the bottom plate 112. The upper part of the tank shell 111 has an exhaust duct 122 connected to the side of the exhaust shell 121. One end of the exhaust duct 122 is connected to one end of the exhaust fan 123, and the other end of the exhaust fan 123 is connected to the transmission pipe 22. The high-temperature flue gas rises into the exhaust shell 121 and then enters the exhaust fan 123 through the exhaust duct 122. The exhaust fan 123 transports the high-temperature flue gas through the transmission pipe 22 to the area between the insulation shell 21 and the bottom plate 112, thereby achieving the technical effect of guiding the high-temperature flue gas into the insulation shell 21. The function of the insulation component is to heat and insulate the bottom plate 112. The insulation component includes the insulation shell 21 and the transmission pipe 22. 2. A heat dissipation component 23 and an insulation shell 21 are located at the lower part of the base plate 112. The insulation shell 21 is made of a composite material of ceramic fiber felt and aerogel, which can improve the heat insulation effect of the insulation shell 21. The insulation shell 21 covers the base plate 112. A transmission pipe 22 is located between the insulation shell 21 and the base plate 112. One end of the transmission pipe 22 is connected to the air intake component, and the other end is connected to the other end of the return component 13. The heat dissipation component 23 is installed on the transmission pipe 22. After the high-temperature flue gas enters the transmission pipe 22, the heat is dissipated to the area between the base plate 112 and the insulation shell 21 through the heat dissipation component 23. The transmission pipe 22 is zigzag or... The serpentine arrangement increases the distribution area of the transmission pipes 22, thereby increasing the heat dissipation effect of the heat dissipation components 23. In this technical solution, the high-temperature flue gas generated in the tank is guided to the transmission pipes 22 by the air-guiding component. The heat dissipation component 23 disperses the heat of the high-temperature flue gas into the insulation shell 21 to heat and insulate the bottom plate 112. The remaining flue gas is discharged through the return component 13. This not only guides the high-temperature flue gas into the insulation shell 21 to heat and insulate the bottom plate 112, making full use of the heat generated by the high-temperature flue gas, but also reduces the heat required to heat the bottom plate 112, thereby achieving the technical effect of reducing enterprise energy consumption and production costs.
[0026] Furthermore, the exhaust housing 121 includes multiple exhaust channels, one end of which is detachably connected to the upper part of the tank shell 111, and the other end is fixedly connected to the exhaust duct 122. In this embodiment, the exhaust housing 121 is further defined, the exhaust channels are installed on the upper part of the tank shell 111, and the gap between the exhaust channels and the tank shell 111 is minimized. The other end of the exhaust duct 122 is connected to the exhaust duct 122, and the exhaust channels and the exhaust duct 122 are interconnected. High-temperature flue gas enters the exhaust duct 122 through the multiple exhaust channels. Specifically, the exhaust component also includes a control valve 124, which is located between the exhaust fan 123 and the exhaust duct 122. The control valve 124 acts as a main valve. The exhaust duct 122 is connected to the exhaust fan 123 through a connecting pipe, and the control valve 124 is installed on the connecting pipe to control the opening or closing of the connecting pipe.
[0027] Furthermore, the heat dissipation component 23 includes multiple heat sink assemblies, which are arranged perpendicular to the transmission pipe 22. In this embodiment, the heat dissipation component 23 is further defined as being composed of multiple heat sink assemblies, which are evenly installed on the transmission pipe 22. Each heat sink assembly includes multiple heat sinks, which are arranged perpendicular to the transmission pipe 22, thereby further increasing the heat dissipation effect of the heat sinks.
[0028] Furthermore, the control system includes a main controller 31, a data acquisition sensor 32, and a flow regulating valve 33. The data acquisition sensor 32 is inserted into the insulation housing 21, and the flow regulating valve 33 is located between the control valve 124 and the induced draft fan 123. The main controller 31 is connected to the data acquisition sensor 32, the flow regulating valve 33, and the induced draft fan 123 respectively. In this embodiment, a control system is added. A sensor 32 is inserted into the insulation shell 21 to collect temperature data inside the insulation shell 21. The temperature data is then transmitted to the main controller 31. The main controller 31 sets an upper and lower threshold. When the temperature inside the insulation shell 21 reaches the upper threshold, the main controller 31 controls the flow regulating valve 33 to reduce its opening. At the same time, the main controller 31 controls the induced draft fan 123 to reduce its speed, thereby reducing the flow of flue gas entering the insulation shell 21 and preventing the bottom plate 112 from overheating. When the temperature inside the insulation shell 21 reaches the lower threshold, the main controller 31 controls the flow regulating valve 33 to increase its opening. At the same time, the main controller 31 controls the induced draft fan 123 to increase its speed, thereby increasing the flow of flue gas entering the insulation shell 21 and enhancing the heating of the bottom plate 112.
[0029] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.
Claims
1. A heat preservation device for the bottom plate of an aluminum electrolytic cell furnace, characterized in that, include: An exhaust component, comprising a tank, an air intake component, and a return component, wherein the tank comprises a tank shell and a bottom plate, the bottom plate is disposed on the upper part of the tank shell, the air intake component is disposed on the upper part of the tank shell and covers the tank shell, and one end of the return component is connected to the air intake component; The insulation component includes an insulation shell, a transmission pipe, and a heat dissipation component. The insulation shell is disposed at the lower part of the base plate and covers the base plate. The transmission pipe is disposed between the insulation shell and the base plate. One end of the transmission pipe is connected to the air intake component, and the other end is connected to the other end of the return component. The heat dissipation component is installed on the transmission pipe.
2. The aluminum electrolysis cell furnace bottom plate heat preservation device according to claim 1, characterized in that, The air-exhaust component includes an air-exhaust housing, an air-exhaust duct, and an air-exhaust fan. The air-exhaust housing is installed on the upper part of the tank shell. The side of the air-exhaust duct is connected to the air-exhaust housing. One end of the air-exhaust duct is connected to one end of the air-exhaust fan, and the other end of the air-exhaust fan is connected to the transmission duct.
3. The aluminum electrolysis cell furnace bottom plate insulation device according to claim 2, characterized in that, The air intake housing includes multiple air intake channels, one end of which is detachably connected to the upper part of the tank housing, and the other end is fixedly connected to the air intake pipe.
4. The aluminum electrolysis cell furnace bottom plate heat preservation device according to claim 2, characterized in that, The induced draft component also includes a control valve, which is disposed between the induced draft fan and the induced draft duct.
5. The aluminum electrolysis cell furnace bottom plate heat preservation device according to claim 4, characterized in that, The transmission pipelines are arranged in a zigzag or serpentine pattern.
6. The aluminum electrolysis cell furnace bottom plate heat preservation device according to claim 4, characterized in that, The heat dissipation component includes multiple heat sink assemblies, which are arranged perpendicular to the transmission pipe.
7. The aluminum electrolytic cell furnace bottom plate insulation device according to claim 4, characterized in that, Also includes: The control system includes a main controller, a data acquisition sensor, and a flow regulating valve. The data acquisition sensor is inserted into the insulation shell, the flow regulating valve is disposed between the control valve and the induced draft fan, and the main controller is connected to the data acquisition sensor, the flow regulating valve, and the induced draft fan.