Photovoltaic power generation auxiliary ring type baking furnace production prebaked anode system
By using a photovoltaic-assisted movable combustion rack and mobile electrode system, combined with the Joule effect and gas combustion, the heating mode is optimized, solving the problem of high energy consumption and high carbon emissions in traditional ring-type calcining furnaces, and realizing low-carbon and high-efficiency production of prebaked anodes.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUAZHONG UNIV OF SCI & TECH
- Filing Date
- 2025-07-09
- Publication Date
- 2026-08-04
AI Technical Summary
Traditional ring-type roasting furnaces rely on fossil fuels, resulting in high energy consumption and high carbon emissions. Furthermore, electric heating schemes fail to effectively utilize renewable energy sources, making it difficult to achieve low-carbon and high-efficiency production of prebaked anodes.
A movable combustion rack and mobile electrode system assisted by photovoltaic power generation are adopted. Combining the Joule effect and gas combustion, the heating mode is optimized. The photovoltaic power generation system is used to power the fixed and mobile electrodes, so as to realize flexible heating of the furnace chamber.
It reduces fuel consumption, achieves energy conservation and emission reduction, adapts to the needs of alternating heating in multiple furnace chambers, reduces equipment costs, and meets the requirements of green manufacturing.
Smart Images
Figure CN224593701U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of prebaked anode production technology, and in particular to a photovoltaic power generation auxiliary ring calcining furnace system for producing prebaked anodes. Background Technology
[0002] The annular roasting furnace is a core piece of equipment in prebaked anode production. It heats the furnace chamber through gas combustion, allowing the filler material (such as petroleum coke and pitch coke) to complete the roasting process at high temperatures. Traditional annular roasting furnaces rely on fossil fuels such as natural gas and coal gas as heat sources, which has significant drawbacks. For example, they have high energy consumption and large carbon emissions. During the high-temperature phase of the furnace chamber (typically requiring maintenance above 1200°C), continuous fuel combustion is necessary, resulting in enormous energy consumption and the generation of large amounts of greenhouse gases (such as...). ) and pollutants (such as , Emissions are high, making it difficult to meet the requirements of green manufacturing. Fuel costs are highly volatile, with fossil fuel prices significantly affected by market supply and demand and policies, increasing the uncertainty of production costs.
[0003] In recent years, some technologies have attempted to introduce electric heating as an auxiliary heat source, such as using the Joule heating effect to directly heat materials. However, existing electric heating solutions also have some problems, such as unsustainable energy structure; if directly relying on grid power, it still relies mainly on thermal power and has not achieved clean energy substitution. The electrode arrangement is rigid; traditional Joule heating electrodes are fixed to the furnace body, which cannot adapt to the process requirements of alternating heating in multiple furnace chambers.
[0004] Therefore, there is an urgent need for a ring-type roasting furnace system that can integrate renewable energy, optimize heating modes, and improve temperature control accuracy in order to break through the bottlenecks of traditional technology and achieve low-carbon and high-efficiency production of prebaked anodes. Utility Model Content
[0005] In view of this, in order to solve the technical problems of high energy consumption and high carbon emissions in the existing prebaked anode production process, the present invention provides a photovoltaic power generation-assisted ring calcining furnace system for producing prebaked anodes.
[0006] An embodiment of this utility model provides a photovoltaic power generation auxiliary ring calcining furnace system for producing prebaked anodes, comprising:
[0007] Multiple furnace bodies, each furnace body including multiple flues and multiple furnace chambers, the flues and furnace chambers being spaced apart, and fixed electrodes being embedded at the bottom of each furnace chamber;
[0008] A movable combustion rack includes a movable frame, multiple combustion nozzles, and multiple heat protection covers. The movable frame is movably disposed on the top of each of the furnace bodies. Each of the combustion nozzles and each of the heat protection covers is fixed on the movable frame. Each combustion nozzle corresponds to a flue. Each heat protection cover covers the furnace opening of a furnace chamber. Each heat protection cover is provided with a movable electrode.
[0009] And a photovoltaic power generation system, comprising a photovoltaic array and an electronic conversion device connected to the photovoltaic array, the electronic conversion device being connected to each of the movable electrodes and each of the fixed electrodes.
[0010] Furthermore, the inner wall of the furnace chamber is provided with furnace chamber packing made of conductive material, and the furnace chamber packing divides the furnace chamber into interconnected multi-layer feeding chambers from top to bottom.
[0011] Furthermore, the furnace packing is calcined coke.
[0012] Furthermore, the thermal protection cover is provided with an anode conductive rod that penetrates its top surface, and the movable electrode is fixed to the lower end of the protection cover and aligned with the furnace opening of the furnace chamber.
[0013] Furthermore, the lower end of the anode conductive rod is provided with a claw-shaped connector, which is connected to the movable electrode.
[0014] Furthermore, the movable electrode is a graphite electrode, and the fixed electrode is a silicon carbide electrode with an antioxidant coating on its surface.
[0015] Furthermore, each of the furnace chambers is equipped with multiple temperature sensors, which are spaced apart along the height direction.
[0016] Furthermore, it also includes a factory building, which includes two opposing walls, with multiple partition walls made of refractory bricks between the two walls, and the flue or furnace chamber formed between two adjacent partition walls.
[0017] Furthermore, the two ends of the movable frame are slidably disposed on the top of the two walls.
[0018] Furthermore, the factory building also includes a roof, and the photovoltaic array is installed on the roof.
[0019] The beneficial effects of the technical solution provided by the embodiments of this utility model are as follows:
[0020] 1. This utility model discloses a photovoltaic power generation-assisted ring-type calcining furnace system for producing prebaked anodes. The prebaked anode filler material is filled into each furnace chamber. In the low-temperature preheating stage of 0-500℃, gas is input into each combustion nozzle. The gas in the flue gas heats the furnace chamber and heats the filler material. In the high-temperature stage of 500-1200℃, the photovoltaic power generation system supplies power to the moving electrodes at the top of each furnace chamber. The filler material of the moving electrodes at the top and the fixed electrodes at the bottom of each furnace chamber generates a Joule effect. In this way, the flue gas combustion heating and the Joule heating electrode heating work together in the high-temperature stage to reduce fuel consumption, realize the utilization of new energy, and achieve the purpose of energy conservation and emission reduction.
[0021] 2. The present invention relates to a photovoltaic power generation auxiliary ring roasting furnace for producing prebaked anodes, wherein a movable combustion frame integrates movable electrodes and nozzles, and can be moved under the drive of the movable frame to work in combination with furnace chambers of different furnace bodies to adapt to the heating requirements of different furnace chambers at different times, thereby reducing equipment costs. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of a photovoltaic power generation auxiliary ring calcining furnace system for producing prebaked anodes according to this utility model;
[0023] Figure 2 This is a schematic diagram of a thermal protection shield;
[0024] Figure 3 This is an exploded view of the thermal protection shield;
[0025] Figure 4 This is a schematic diagram of the factory building.
[0026] In the diagram: 1. Flue; 2. Furnace chamber; 3. Fixed electrode; 4. Moving frame; 5. Combustion nozzle; 6. Thermal protection cover; 7. Moving electrode; 8. Anode conductive rod; 9. Wire; 10. Furnace chamber packing; 11. Partition wall; 12. Feeding chamber; 13. Temperature sensor; 14. Wall; 15. Claw connector; 16. Roof; 17. Photovoltaic array. Detailed Implementation
[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be further described below with reference to the accompanying drawings. The following description presents a preferred embodiment of several possible embodiments of this utility model, intended to provide a basic understanding of the utility model, but not intended to identify the key or decisive elements of the utility model or to limit the scope of protection sought.
[0028] In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values.
[0029] Techniques, methods, and equipment known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and equipment should be considered part of the specification.
[0030] It should be noted that similar labels and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be discussed further in subsequent figures. Also, it should be understood that, for ease of description, the dimensions of the various parts shown in the figures are not drawn to actual scale.
[0031] In the description of this utility model, it should be noted that the circuits, electronic components and modules involved in this utility model are all existing technologies, which can be fully implemented by those skilled in the art, and need not be elaborated upon.
[0032] It should be further noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0033] Please refer to Figure 1 The present invention provides a photovoltaic power generation auxiliary ring roasting furnace for producing prebaked anodes, including multiple furnace bodies, a movable combustion rack and a photovoltaic power generation system.
[0034] The number of furnace bodies can be flexibly set according to the actual production of prebaked anodes, and each furnace body operates at different times.
[0035] refer to Figure 1 The cross-sectional view of a single furnace body shown is provided. Each furnace body includes multiple flues 1 and multiple furnace chambers 2. The flues 1 and the furnace chambers 2 are arranged at intervals. Both the flues 1 and the furnace chambers 2 are spaces with an approximate cuboid shape, and both the flues 1 and the furnace chambers 2 are arranged vertically.
[0036] Each of the furnace chambers 2 has a fixed electrode 3 embedded at its bottom. The fixed electrode 3 is generally a silicon carbide electrode with an anti-oxidation coating on its surface. The fixed electrode 3 is pre-embedded at the bottom of the furnace chamber 2, and its specific shape and size are adapted to the shape and size of the furnace chamber 2. Generally, its cross-sectional shape is approximately the same as that of the furnace chamber 2.
[0037] Combination Figure 2 and 3As shown, the movable combustion rack includes a movable frame 4, multiple combustion nozzles 5, and multiple thermal protection covers 6. The movable frame 4 spans the furnace body and is movably mounted on the top of each furnace body. Each combustion nozzle 5 and each thermal protection cover 6 is fixed to the movable frame 4, and each combustion nozzle 5 corresponds to one of the flues 1. The combustion nozzles 5 can be connected to an external gas source, and the gas is burned in the flue 1 through the combustion nozzles 5 to heat the furnace chamber 2 adjacent to the flue 1.
[0038] Each of the aforementioned thermal protection covers 6 and covers the furnace opening of one of the furnace chambers 2. Each thermal protection cover 6 contains a movable electrode 7. Specifically, the movable electrode 7 can be a graphite electrode. The thermal protection cover 6 has an anode conductive rod 8 extending through its top surface. The movable electrode 7 is fixed to the lower end of the cover and aligned with the furnace opening of the furnace chamber 2. Here, the lower end of the anode conductive rod 8 has a claw-shaped connector 15, which connects to the movable electrode 7.
[0039] Thus, the fixed electrode 3 and the movable electrode 7 at the bottom of each furnace chamber 2 are located at the upper and lower ends of the furnace chamber 2, respectively. When the prebaked anode material is filled into the furnace chamber 2, it comes into contact with the fixed electrode 3 and the movable electrode 7, respectively. Powering the fixed electrode 3 and the movable electrode 7 can generate a Joule effect in the material, thereby heating the material.
[0040] Furthermore, the movable frame 4 can move each of the combustion nozzles 5 and the thermal protection covers 6 between multiple furnace bodies, moving them to the target furnace body, so that each of the combustion nozzles 5 is inserted into each flue 1 of the target furnace body, and each of the movable electrodes 7 is arranged at the furnace opening of each furnace chamber 2 of the target furnace body, so that the movable combustion frame works in conjunction with the target furnace body. Depending on the actual production process of the prebaked anode, the target furnace body can be any of the aforementioned furnace bodies to adapt to the different heating requirements of the furnace chambers 2 of different furnace bodies at different times.
[0041] The photovoltaic power generation system includes a photovoltaic array 17 and an electronic conversion device connected to the photovoltaic array 17. The electronic conversion device is connected to each of the movable electrodes 7 and each of the fixed electrodes 3 via wires 9. The photovoltaic array 17 is used to convert light energy into direct current (DC) power, and the electronic conversion device is used to convert DC power into alternating current (AC) power, thereby supplying power to each of the fixed electrodes 3 and each of the movable electrodes 7 to induce a Joule effect in the filler material. The photovoltaic array 17 and the electronic conversion device can be flexibly selected according to actual application needs. For example, in this embodiment, the photovoltaic array 17 uses monocrystalline silicon photovoltaic panels (350W / panel), with a total array capacity of 500kW. The electronic conversion device uses a three-phase inverter (model: SMA Sunny Tripower 5000TL) to convert DC power into 380V / 50Hz AC power.
[0042] In some embodiments, the photovoltaic power generation system further includes a lithium-ion battery pack with a capacity of 1 MWh and a voltage of 600 V. The lithium-ion battery pack is connected to the electron conversion device and is used to store excess electrical energy generated by the photovoltaic array 17, and to power each of the movable electrode 7 and each of the fixed electrode 3 when there is insufficient sunlight.
[0043] In some embodiments, the inner wall of the furnace chamber 2 is provided with furnace chamber packing 10 of conductive material. The furnace chamber packing 10 divides the furnace chamber 2 into interconnected multi-layer feeding chambers 12 from top to bottom. Each layer of the feeding chamber 12 can be filled with packing material for producing a prebaked anode. In this way, each furnace chamber 2 can be filled with multiple prebaked anode packing materials stacked on top of each other at the same time, and the mechanical energy of multiple prebaked anode packing materials can be heated at the same time.
[0044] Preferably, each of the furnace chambers 2 is divided into three layers of feeding chambers 12 by the furnace chamber packing 10. Each of the furnace chambers 2 can simultaneously heat and bake the packing materials of the three prebaked anodes.
[0045] The furnace packing 10 can be made from calcined coke, which can effectively prevent heat loss.
[0046] In some embodiments, to monitor the heating temperature of the packing material within the furnace chamber 2, each furnace chamber 2 is provided with a plurality of temperature sensors 13, which are thermocouple sensors, and the temperature sensors 13 are spaced apart along the height direction. When the furnace chamber 2 is divided into multiple feeding chambers 12, the temperature sensors 13 are arranged in the furnace packing material 10 corresponding to the top and bottom of each feeding chamber 12, so that the heating temperature of the packing material of each prebaked anode can be accurately monitored.
[0047] In addition, such as Figure 4As shown, this utility model discloses a photovoltaic power generation auxiliary ring roasting furnace system for producing prebaked anodes, which also includes a workshop. The workshop includes two opposing walls 14, with multiple partition walls 11 made of refractory bricks between the two walls 14. The flue 1 or furnace chamber 2 is formed between adjacent partition walls 11. Multiple furnaces are arranged between the two walls 14. The two ends of the movable frame 4 are slidably mounted on the top of the two walls 14, allowing it to move between the furnaces.
[0048] Furthermore, the factory building also includes a roof 16, which is a sloping roof. The roof 16 is fixed to the upper ends of the two walls 14, and the photovoltaic array 17 is disposed on the roof 16. The tilt angle of the roof can be flexibly set according to the geographical location of the factory building to maximize light energy collection.
[0049] This utility model discloses a photovoltaic power generation auxiliary ring calcining furnace system for producing prebaked anodes, which involves two stages: a preheating stage and a high-temperature stage.
[0050] Preheating stage (0-500℃)
[0051] After the prebaked anode material is filled into each of the furnace chambers 2 of the furnace body, gas is input into each of the gas nozzles. The gas burns in the flue 1, causing the furnace chamber 2 to heat up at a rate of 15°C / min. At this time, no power is supplied to the fixed electrode 3 and the moving electrode 7. The electrical energy converted by the photovoltaic array 17 of the photovoltaic power generation system can be stored in the lithium-ion battery pack.
[0052] High temperature stage (500-1200℃)
[0053] When the furnace temperature in furnace chamber 2 is ≥500℃, the photovoltaic power generation system supplies power to the fixed electrode 3 and the moving electrode 7. The filler material of the moving electrode 7 at the top and the fixed electrode 3 at the bottom of each furnace chamber 2 generates a Joule effect. During the high-temperature stage, the gas combustion heating from the flue duct 1 and the Joule heating electrode work together to heat the filler material of the prebaked anode. Based on the temperature feedback within the furnace chamber 2, the energy supply ratio of gas combustion heating from the flue duct 1 and the Joule heating electrode can be adjusted to meet the high-temperature heating needs of the prebaked anode filler material. This reduces fuel consumption, utilizes new energy sources, and achieves energy conservation and emission reduction goals.
[0054] In this document, the directional terms such as front, back, top, and bottom are defined based on the position of the components in the accompanying drawings and their relative positions to each other, solely for the purpose of clarity and convenience in expressing the technical solution. It should be understood that these are relative concepts and can vary depending on different methods of use and placement; the use of these directional terms should not limit the scope of protection claimed in this application.
[0055] Where there is no conflict, the embodiments and features described above can be combined with each other. The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A system for the production of prebaked anodes by means of a photovoltaic power assisted annular calciner, characterized in that, include: Multiple furnace bodies, each furnace body including multiple flues and multiple furnace chambers, the flues and furnace chambers being spaced apart, and fixed electrodes being embedded at the bottom of each furnace chamber; A movable combustion rack includes a movable frame, multiple combustion nozzles, and multiple heat protection covers. The movable frame is movably disposed on the top of each of the furnace bodies. Each of the combustion nozzles and each of the heat protection covers is fixed on the movable frame. Each combustion nozzle corresponds to a flue. Each heat protection cover covers the furnace opening of a furnace chamber. Each heat protection cover is provided with a movable electrode. And a photovoltaic power generation system, comprising a photovoltaic array and an electronic conversion device connected to the photovoltaic array, the electronic conversion device being connected to each of the movable electrodes and each of the fixed electrodes.
2. The prebaked anode production system of the photovoltaic power- assisted ring furnace, according to claim 1, characterized in that: The inner wall of the furnace chamber is filled with furnace chamber packing made of conductive material, and the furnace chamber packing divides the furnace chamber into interconnected multi-layer feeding chambers from top to bottom.
3. The prebaked anode production system of the photovoltaic power- assisted ring furnace, according to claim 2, characterized in that: The furnace packing material is calcined coke.
4. The photovoltaic power generation auxiliary ring calcining furnace prebaked anode production system as described in claim 1, characterized in that: The thermal protection cover is provided with an anode conductive rod that penetrates its top surface, and the movable electrode is fixed to the lower end of the protection cover and aligned with the furnace opening of the furnace chamber.
5. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 4, wherein: The lower end of the anode conductive rod is provided with a claw-shaped connector, which is connected to the movable electrode.
6. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 1, characterized in that: The movable electrode is a graphite electrode, and the fixed electrode is a silicon carbide electrode with an anti-oxidation coating on its surface.
7. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 1, characterized in that: Each furnace chamber is equipped with multiple temperature sensors, which are spaced apart along the height direction.
8. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 1, characterized in that: It also includes a factory building, which includes two opposing walls, with multiple partition walls made of refractory bricks between the two walls, and the flue or furnace chamber formed between two adjacent partition walls.
9. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 8, wherein: The two ends of the mobile frame are slidably mounted on the top of the two walls.
10. The prebaked anode production system of the photovoltaic power- assisted ring furnace as claimed in claim 8, wherein: The factory building also includes a roof, and the photovoltaic array is installed on the roof.