Energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace and its heating system

Abstract

The present invention discloses an energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace and a heating system thereof, which relates to the technical field of aluminum melting furnaces, and comprises: a heating chamber, a melting chamber and at least one group of feeding side well chambers; the heating chamber and the melting chamber are arranged side by side and are interconnected through a first pipe, and the feeding side well chamber is interconnected with the heating chamber through a second pipe and is interconnected with the melting chamber through a third pipe; a regenerative burner is arranged on one side of the heating chamber; a bubble generator is provided in multiple groups and arranged on the bottom side wall of the melting chamber, for generating bubbles and sending the bubbles into the interior of the molten aluminum; a swirl airflow nozzle is provided in multiple groups and arranged on the upper end side wall of the melting chamber, for generating a swirling airflow; the bubble generator of the present invention generates fine bubbles, which are injected into the interior of the molten aluminum through the bottom side wall, thereby enhancing heat convection, promoting uniform heating of the molten aluminum, and enhancing the mixing effect of the molten aluminum and aluminum chips.

Description

Technical Field

[0001] The present invention relates to the technical field related to aluminum melting furnaces, and in particular to an energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace and a heating system thereof. Background Art

[0002] The side-well feeding aluminum melting furnace adopts a double-melting pool structure. A feeding side well is set at the back of the furnace. The aluminum liquid in the main melting pool and the side melting pool is circulated by an aluminum liquid pump. At the same time, an aluminum liquid vortex is formed in the feeding side well, and the raw materials (solid aluminum) are sent into the aluminum liquid vortex through a conveyor for melting. The side-well feeding furnace has the characteristics of reducing the intensity of manpower feeding and reducing burning loss due to its unique structure. It is particularly suitable for the melting and regeneration process of recycled aluminum with light specific gravity and easy burning loss (such as aluminum chips).

[0003] Patent document with patent publication number CN115711531A discloses a double-chamber furnace side well flue gas secondary combustion device, comprising a furnace body, the interior of the furnace body is divided into a heating chamber and a waste chamber, the heating chamber is provided with a burner, the waste chamber is provided with a heat supplement burner, the heating chamber and the waste chamber are connected, a side well device is provided on one side of the furnace body near the heating chamber, the side well device includes a chip sink and a circulation pump connected to the chip sink, a cover is provided above the chip sink, a smoke exhaust hole is provided on the side of the cover near the heating chamber, and the smoke exhaust hole is connected to the heating chamber, and an ignition gun inserted into the smoke exhaust hole is provided on the cover. The present invention allows the combustible smoke generated by the melting waste in the chip sink to be ignited by the ignition gun provided on the cover and sent into the heating chamber for secondary combustion, thereby solving the problem of energy waste and environmental pollution caused by direct emission of smoke, and achieving the purpose of energy recycling.

[0004] However, during actual use, the inventors found that the existing aluminum melting furnaces have problems such as insufficient heat convection efficiency, uneven temperature distribution, and insufficient mixing of molten aluminum and aluminum chips during the melting process. These problems together lead to practical obstacles such as low melting rate, high energy consumption, and discontinuous system operation. Summary of the Invention

[0005] In order to solve the defects of the prior art, the present invention provides an energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace and a heating system thereof.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] The present invention provides an energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace, comprising:

[0008] A heating chamber, a melting chamber and at least one set of feeding side well chambers;

[0009] The heating chamber and the melting chamber are arranged side by side and are connected to each other through a first pipe, and the feeding side well chamber is connected to the heating chamber through a second pipe and is connected to the melting chamber through a third pipe;

[0010] A regenerative burner is provided on one side of the heating chamber;

[0011] Bubble generators are provided in multiple groups and arranged on the bottom side wall of the melting chamber, for generating bubbles and sending the bubbles into the interior of the molten aluminum;

[0012] The swirl airflow nozzles are provided in multiple groups and arranged on the upper side wall of the melting chamber for generating swirling airflow.

[0013] As a preferred technical solution of the present invention, the feeding side well chamber, the first pipeline, the second pipeline and the third pipeline are each provided with two groups, and the two groups of the feeding side well chambers are arranged side by side.

[0014] As a preferred technical solution of the present invention, the diameter of the bubbles generated by the bubble generator is 10-100 μm, and the single-hole gas injection speed is 0.1-0.5 m / s.

[0015] As a preferred technical solution of the present invention, the swirl airflow nozzle sprays airflow toward the central area of ​​the melting chamber at an angle of 20° to 45° to the horizontal plane, and the gas injection speed of the swirl airflow nozzle is 2 to 10 m / s.

[0016] As a preferred technical solution of the present invention, slag outlets are provided at the lower ends of the heating chamber and the melting chamber.

[0017] The heating system of the energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace includes:

[0018] Temperature acquisition module, used to collect real-time temperature data inside the heating chamber and melting chamber;

[0019] The furnace data processing module is used to obtain the real-time temperature data collected by the temperature acquisition module and obtain the real-time temperature difference between the heating chamber and the melting chamber;

[0020] The control module obtains temperature comparison results based on the real-time temperatures inside the heating chamber and the melting chamber and the real-time temperature difference between the heating chamber and the melting chamber, and adjusts the working parameters of the aluminum melting furnace based on the temperature comparison results.

[0021] As a preferred technical solution of the present invention, the operating parameters of the aluminum melting furnace include the flame intensity of the regenerative burner, the bubble generation amount and bubble rate of the bubble generator, and the flow rate of the airflow generated by the swirl airflow nozzle.

[0022] As a preferred technical solution of the present invention, the temperature comparison results specifically include: temperature result 1, temperature result 2, temperature result 3, and temperature result 4;

[0023] Temperature result 1: the real-time temperature difference between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature collection module is lower than the second minimum temperature threshold;

[0024] Temperature result 2: the real-time temperature difference between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is higher than the second maximum temperature threshold;

[0025] Temperature result three: the real-time temperature difference between the heating chamber and the melting chamber is higher than the highest temperature threshold one, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is lower than the lowest temperature threshold two;

[0026] Temperature result four: the real-time temperature difference between the heating chamber and the melting chamber is higher than the maximum temperature threshold one, and the real-time temperature data of the melting chamber collected by the temperature collection module is higher than the maximum temperature threshold two.

[0027] As a preferred technical solution of the present invention, the operating parameters of the aluminum melting furnace are regulated according to the temperature comparison results. The specific regulation process is:

[0028] If the temperature comparison result is temperature result 1, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle;

[0029] If the temperature comparison result is temperature result 2, the control module reduces the bubble generation amount and bubble rate of the bubble generator and reduces the flow rate of the airflow generated by the swirl airflow nozzle;

[0030] If the temperature comparison result is temperature result three, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle;

[0031] If the temperature comparison result is temperature result four, the control module reduces the flame intensity of the regenerative burner, reduces the bubble generation amount and bubble rate of the bubble generator, and reduces the flow rate of the airflow generated by the swirl airflow nozzle.

[0032] As a preferred technical solution of the present invention, the minimum temperature threshold is set to 50-100°C;

[0033] The second minimum temperature threshold is lower than or equal to 660°C;

[0034] The maximum temperature threshold is set to 150-200°C;

[0035] The second maximum temperature threshold is higher than 660°C.

[0036] The beneficial effects of the present invention are:

[0037] 1. The present invention improves the airflow distribution within the melting chamber through the design of a bubble generator and a swirl airflow nozzle. The bubble generator generates fine bubbles, which are injected into the molten aluminum through the bottom sidewall, thereby enhancing heat convection and promoting uniform heating of the molten aluminum. The swirl airflow nozzle generates a rotating airflow on the upper sidewall of the melting chamber, effectively mixing and evenly distributing the airflow within the melting chamber. In addition, the bubble generator helps to fully mix the molten aluminum and aluminum chips by generating fine bubbles. The swirl airflow nozzle further enhances the rotation effect of the airflow, thereby enhancing the mixing effect of the molten aluminum and aluminum chips.

[0038] 2. The present invention optimizes the heating system and combines real-time temperature data acquisition, temperature difference control, and regulation of the regenerative burner, bubble generator, and swirl airflow nozzle to dynamically adjust the operating parameters of the aluminum melting furnace (such as flame intensity, bubble generation amount, bubble rate, airflow velocity, etc.), thereby making the melting process more continuous, stable, and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0040] Figure 1 This is a schematic structural diagram of the energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace of the present invention;

[0041] Figure 2 Flowchart of the heating system of the present invention.

[0042] In the figure: 1. Heating chamber; 2. Melting chamber; 3. Feeding side well chamber; 4. First pipeline; 5. Second pipeline; 6. Third pipeline; 7. Regenerative burner; 8. Bubble generator; 9. Swirl airflow nozzle; 10. Slag outlet. DETAILED DESCRIPTION

[0043] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0044] like Figure 1As shown, the energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace of the present invention is designed as a double-chamber double-side well structure, including:

[0045] A heating chamber, a melting chamber and at least one set of feeding side well chambers, preferably two sets;

[0046] The heating chamber and the melting chamber are arranged side by side and are interconnected through a first pipe. The feeding side well chamber is interconnected with the heating chamber through a second pipe and is interconnected with the melting chamber through a third pipe. This ensures that the melting chamber can share heat with the heating chamber through the pipes, forming a good heat exchange environment, thereby ensuring that aluminum chips, molten aluminum and other raw materials can be added to the melting chamber more efficiently. In this design, the provision of the feeding side well chamber helps to avoid excessive deposition of aluminum chips in traditional furnaces and optimizes the addition and mixing of raw materials.

[0047] A regenerative burner is provided on one side of the heating chamber. This burner continuously releases heat in the heating chamber through a heat storage element, making the combustion process more stable and uniform. Compared with traditional burners, the regenerative burner can provide a stable heat source for a long time, and can reduce heat loss during the melting process, thereby improving heat utilization. The regenerative burner is located on one side of the heating chamber and can directly act on the melting of molten aluminum to improve its efficiency. Preferably, the regenerative burner in the present invention uses an energy-saving and environmentally friendly diffuse combustion regenerative combustion gun.

[0048] Bubble generators, provided in multiple groups and arranged on the bottom side wall of the melting chamber, are used to generate bubbles and send the bubbles into the interior of the molten aluminum. The small size of the bubbles helps to enhance heat convection and promote uniform heating and mixing of the molten aluminum;

[0049] Swirl airflow nozzles are provided in multiple groups and arranged on the upper side wall of the melting chamber to generate a swirling airflow. The swirling airflow nozzles are arranged on the upper side wall of the melting chamber, and the airflow ejected is in a swirling state. This swirling airflow helps to enhance the airflow circulation in the melting chamber and improve the mixing efficiency of the molten aluminum and aluminum chips;

[0050] The lower ends of the heating chamber and the melting chamber are both provided with slag outlets. The setting of the slag outlets enables aluminum chips and impurities to be discharged in time during the melting of molten aluminum, ensuring the cleanliness of the melting process. Regular slag discharge can prevent the accumulation of impurities, thereby reducing the risk of pollution during the melting process and extending the service life of the equipment. The design of the slag outlet not only takes into account the discharge of impurities, but also needs to consider the fluidity and stability of the molten aluminum during the melting process. A reasonable slag outlet layout can effectively guide the flow of molten aluminum and avoid fluctuations in the temperature of the molten aluminum or uneven melting due to poor slag discharge.

[0051] The double-chamber double-side well structure of the present invention can continuously feed materials from two feeding side well chambers simultaneously, thereby improving production efficiency compared with ordinary double-chamber side well furnaces.

[0052] Further, if Figure 1 As shown, the feeding side well chamber, the first pipe, the second pipe and the third pipe are each provided with two groups, and the two groups of the feeding side well chambers are arranged side by side. The aluminum liquid circulation system uses two sets of aluminum liquid pumps to extract the aluminum liquid from the heating chamber and send it into the melting chamber. In the melting chamber, the aluminum liquid forms a vortex through the synergistic effect of a specific swirl airflow and microbubbles, quickly sucking in aluminum chips and completing melting. The melted aluminum liquid returns to the heating chamber again.

[0053] The system uses two sets of aluminum water pumps to pump aluminum water out of the heating chamber and send it into the melting chamber, ensuring the efficient flow of aluminum water between the heating chamber and the melting chamber.

[0054] The role of a molten aluminum pump is not only to transport molten aluminum, but also to ensure the flow rate and direction of the molten aluminum. Traditional aluminum melting furnaces often have poor molten aluminum flow, resulting in overheating of some areas of the molten aluminum and insufficient heat in other areas, leading to low melting efficiency.

[0055] The flow of molten aluminum in the melting chamber not only depends on the efficient delivery of the molten aluminum pump, but also relies on the synergistic effect of the bubbles and airflow generated by the swirl airflow nozzle and bubble generator. These bubbles and swirl airflow can form a strong vortex in the molten aluminum, so that the aluminum chips are fully sucked in in a shorter time and the melting process is accelerated.

[0056] The swirl nozzle, located on the upper sidewall of the melting chamber, sprays air at a specific angle, creating a stable, swirling flow. This airflow acts directly on the surface of the molten aluminum, promoting rapid mixing of the aluminum chips and molten aluminum. The fine bubbles produced by the bubble generator enhance melting efficiency through their buoyancy and multiple collisions. This design significantly reduces the settling and retention time of aluminum chips, ensuring sufficient reaction and melting between the chips and molten aluminum.

[0057] The molten aluminum is rapidly melted within the melting chamber through the synergistic effect of bubbles and airflow, and then returned to the heating chamber via a molten aluminum pump. The heating chamber design incorporates a regenerative burner to ensure the molten aluminum is effectively reheated, maintaining its temperature and thermal energy. This not only maintains a stable temperature during the melting process, but also effectively reduces energy loss and improves the overall thermal efficiency of the system.

[0058] Through the design of multiple sets of pipes between the melting chamber and the heating chamber, molten aluminum can circulate between the heating chamber and the melting chamber, which not only improves the melting efficiency of molten aluminum, but also makes full use of every degree of thermal energy, ensuring the energy-saving and environmental protection characteristics of the system.

[0059] Further, if Figure 1 As shown, the diameter of the bubbles generated by the bubble generator is 10-100 μm, and the gas injection speed of a single hole is 0.1-0.5 m / s;

[0060] This setting ensures that bubbles are evenly distributed in the molten aluminum during the melting process, avoiding overheating or local cooling of the molten aluminum. This design significantly increases the melting rate and optimizes the mixing effect of molten aluminum and aluminum chips.

[0061] The bubble diameter is between 10 and 100 μm, which ensures sufficient surface area to improve the heat exchange efficiency between the bubble and the molten aluminum. Smaller bubbles can better diffuse into the molten area, while larger bubbles help enhance the circulation of the molten aluminum, thereby accelerating the melting effect.

[0062] Furthermore, the single-hole gas injection velocity for the bubbles is set between 0.1 and 0.5 m / s. Within this velocity range, gas injection does not significantly disrupt the melting process while effectively generating the desired amount of bubbles. A reasonable bubble injection velocity prevents bubble aggregation and ensures uniform distribution of bubbles within the molten aluminum, thereby improving the stability and efficiency of the entire melting process.

[0063] The swirl airflow nozzle sprays air toward the center of the melting chamber at an angle of 20° to 45° to the horizontal plane, and the gas injection speed of the swirl airflow nozzle is 2 to 10 m / s;

[0064] This spray angle can effectively guide the airflow toward the center area of ​​the melting chamber, making the temperature distribution in the melting chamber more uniform, and the aluminum chips can be better mixed with the aluminum liquid to avoid the occurrence of deposition.

[0065] The air flow injection speed is set at 2~10m / s to ensure that the air flow has sufficient kinetic energy and flow rate to fully mix the aluminum chips and molten aluminum in a relatively short time, while avoiding the problem of uneven melting caused by excessive or weak air flow.

[0066] The airflow velocity and spray angle of the swirl air nozzle are precisely controlled to ensure optimal melting results. For example, if the airflow velocity within the melting chamber is too low, aluminum chips may not effectively enter the molten aluminum, resulting in incomplete melting. Conversely, if the airflow velocity is too high, it may disrupt the overall stability of the melting chamber. Therefore, properly adjusting the nozzle's airflow velocity (2-10 m / s) and spray angle (20°-45°) is crucial to maintaining a stable melting environment.

[0067] Further, if Figure 2 As shown, the heating system includes:

[0068] Temperature acquisition module, used to collect real-time temperature data inside the heating chamber and melting chamber;

[0069] The temperature acquisition module is arranged at key positions of the heating chamber and the melting chamber (for example, the middle of the chamber body, close to the combustion zone, close to the molten aluminum flow zone, etc.) to obtain the internal temperature of the two main working cavities in real time. Preferably, the module adopts a high-sensitivity thermocouple (such as a K-type thermocouple), which can work continuously and accurately in a high-temperature, high-pressure, and high-corrosion environment, and has high temporal resolution and high spatial resolution to ensure the timeliness and accuracy of system feedback.

[0070] In the heating chamber, the temperature acquisition module is optionally provided with three sets of sensors, which are distributed in a triangle (two on the top wall and one on the side wall) to monitor the flame radiation area and the hot air flow distribution;

[0071] In the melting chamber, optionally, the temperature acquisition module is provided with four groups of sensors, with two groups of sensors each being provided at 10 cm and 30 cm below the surface of the molten aluminum to provide real-time feedback on the temperature gradient of the molten aluminum.

[0072] The furnace data processing module is used to obtain the real-time temperature data collected by the temperature acquisition module and obtain the real-time temperature difference ΔT between the heating chamber and the melting chamber;

[0073] This module receives data from the temperature acquisition module and calculates the real-time temperature difference between the heating chamber and the melting chamber based on the set logic and algorithm. This temperature difference is an important indicator for determining the heat transfer efficiency of the furnace and the process status.

[0074] This module can dynamically compare historical data, current data and set thresholds to determine whether the current furnace has temperature conduction hysteresis, insufficient heating or overheating, providing a data basis for regulation;

[0075] For example, if the temperature of the heating chamber is much higher than that of the melting chamber, it may indicate that the heat is not effectively transferred to the melting cavity; otherwise, it may be that the melting chamber is overheating and there is heat energy waste.

[0076] The control module obtains temperature comparison results based on the real-time temperatures inside the heating chamber and the melting chamber, as well as the real-time temperature difference ΔT between the heating chamber and the melting chamber, and adjusts the operating parameters of the aluminum melting furnace based on the temperature comparison results;

[0077] The control module is the executive core of the heating system. Based on the temperature difference results provided by the furnace data processing module and the actual temperatures of the heating chamber and melting chamber, it comprehensively analyzes the current operating status of the furnace body and performs linked and dynamic intelligent control of multiple operating parameters such as the burner flame intensity, the working status of the bubble generator, and the injection airflow rate of the swirl airflow nozzle.

[0078] Through this feedback closed-loop control method, the system can not only solve the problems of "temperature response lag, untimely adjustment, and extensive control" existing in traditional aluminum melting furnaces, but also achieve precise temperature control and optimal energy saving, ensuring stable and reliable operation of the aluminum melting furnace and improving overall operating efficiency.

[0079] In summary, the double-chamber structure and double-side well design enhance the heat convection effect in the furnace and ensure more uniform heat exchange between the melting chamber and the heating chamber.

[0080] The combination of bubble generator and swirl airflow nozzle can improve the melting efficiency of molten aluminum by accelerating the mixing of molten aluminum and aluminum chips.

[0081] Through the coordinated work of the temperature acquisition module and the data processing module, the temperature differences in the furnace can be monitored and adjusted in real time, making the temperature control more precise and avoiding energy waste caused by uneven temperature.

[0082] Further, if Figure 2 As shown, the operating parameters of the aluminum melting furnace include the flame intensity of the regenerative burner, the bubble generation amount and bubble rate of the bubble generator, and the flow rate of the airflow generated by the swirl airflow nozzle.

[0083] Specifically, the flame intensity of the regenerative burner. The regenerative burner is a key component in the heating process of the aluminum melting furnace. By adjusting its flame intensity, the heat output is controlled. When the temperature difference is large, the control module will increase the flame intensity to improve the heating efficiency and the uniformity of the temperature in the furnace. On the contrary, if the temperature difference is too small, it may be necessary to reduce the flame intensity to prevent unnecessary energy waste caused by excessively high temperatures.

[0084] The bubble generator's bubble generation capacity and bubble rate. The bubble generator generates tiny bubbles to help stir the molten aluminum in the melting furnace, enhancing heat convection and mixing of aluminum chips. When the melting chamber temperature is too low or the temperature difference is large, the bubble generator will be adjusted to a higher generation capacity and faster bubble rate to accelerate the melting process of the molten aluminum. Conversely, if the temperature is too high, the bubble generation capacity and rate will be appropriately reduced to prevent excessive bubbles from taking away too much heat.

[0085] The swirl airflow nozzle generates the flow rate of the airflow. The swirl airflow nozzle evenly distributes the hot airflow in the melting chamber by spraying the rotating airflow, helping to improve the temperature distribution of the molten aluminum and promote the mixing of the molten aluminum. When the temperature in the melting chamber is too low, the airflow velocity of the swirl nozzle will increase, thereby accelerating the melting process; when the temperature is too high, the nozzle flow rate will be appropriately reduced to avoid energy waste caused by excessively high temperature.

[0086] Further, if Figure 2 As shown, the temperature comparison results specifically include: temperature result 1, temperature result 2, temperature result 3, and temperature result 4;

[0087] Temperature result 1: the real-time temperature difference ΔT between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is lower than the second minimum temperature threshold;

[0088] This usually occurs when the system is underheated, which may cause the melting chamber temperature to be too low, affecting the melting efficiency. In this case, it is necessary to increase the flame intensity of the burner, increase the bubble generation of the bubble generator, and increase the air flow rate of the swirl air flow nozzle to enhance the heating effect, quickly raise the melting chamber temperature, and ensure the smooth melting of the molten aluminum.

[0089] In addition, since the melting temperature of molten aluminum is generally around 660°C, the temperature of the heating chamber should be higher than this value considering factors such as heat loss.

[0090] The minimum temperature threshold should be set according to the operating temperature difference between the melting chamber and the heating chamber. Generally, when the temperature difference (ΔT) of the melting chamber is lower than 50~100°C, it indicates that the heating process has not yet fully started.

[0091] Preferably, in this embodiment, the lowest temperature threshold is set to 50°C. When the temperature difference between the heating chamber and the melting chamber is less than this value, it may indicate that the heating process is insufficient.

[0092] The second minimum temperature threshold is usually set near the lowest melting temperature of molten aluminum. Considering that the actual melting temperature of molten aluminum is 660°C, it is necessary to ensure that the temperature of the melting chamber does not fall below this value.

[0093] Preferably, in this embodiment, the second lowest temperature threshold is set to 660°C, that is, when the melting chamber temperature is lower than this value, it indicates that the melting temperature is insufficient, resulting in low melting efficiency.

[0094] Temperature result 2: the real-time temperature difference ΔT between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is higher than the second maximum temperature threshold;

[0095] Although underheating is not a problem at this point, the high temperature of the melt chamber can lead to overheating and even energy waste. Overheating can be avoided by reducing the amount and rate of bubble generation, as well as the flow rate of the swirl nozzle, thereby reducing unnecessary energy consumption.

[0096] Temperature result three: the real-time temperature difference ΔT between the heating chamber and the melting chamber is higher than the highest temperature threshold 1, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is lower than the lowest temperature threshold 2;

[0097] This result indicates that the melting chamber temperature has not been effectively increased, which may lead to slow melting speed and low melting efficiency. In this case, it is necessary to increase the flame intensity of the regenerative burner, strengthen the role of the bubble generator, and increase the airflow velocity of the swirl airflow nozzle to accelerate the heating of the molten aluminum and the melting of the aluminum chips.

[0098] Temperature result 4: the real-time temperature difference ΔT between the heating chamber and the melting chamber is higher than the maximum temperature threshold 1, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is higher than the maximum temperature threshold 2;

[0099] At this point, the temperature of the melting chamber is too high, which may lead to energy waste. It is necessary to adjust the temperature by reducing the burner flame intensity and reducing the amount and rate of bubble generation to prevent overheating and reduce energy loss.

[0100] The maximum temperature threshold should be considered as the upper temperature limit during the melting process to avoid damage to the molten aluminum or energy waste due to overheating. Depending on the structure of the aluminum melting furnace, it is recommended to set the temperature difference (ΔT) between 150 and 200°C.

[0101] Preferably, in this embodiment, the maximum temperature threshold is set to 150° C. When the temperature difference between the heating chamber and the melting chamber is greater than this value, the system may enter an overheating state.

[0102] The second maximum temperature threshold is used to prevent overheating in the melting chamber and to ensure that the molten aluminum does not overheat or evaporate. Considering that the upper limit of the melting temperature of molten aluminum should be slightly higher than 660°C to avoid overheating, a reasonable upper temperature limit is set.

[0103] Preferably, in this embodiment, the second maximum temperature threshold is set to 750°C. When the melting chamber temperature is higher than this value, it indicates that the melting chamber temperature is too high, which may result in energy waste or excessive evaporation of molten aluminum.

[0104] The temperature threshold can be obtained based on the following methods:

[0105] Experimental data: The actual temperature difference and melting temperature range of the melting chamber and heating chamber are obtained through experiments, and a reasonable temperature threshold is determined based on this.

[0106] Thermal balance model: Through thermodynamic calculation model and thermal balance analysis, the optimal temperature difference range between the melting chamber and the heating chamber is determined, and the temperature threshold is then set.

[0107] Or based on production experience and equipment requirements: According to different aluminum melting furnace designs and aluminum water treatment requirements, combined with production experience and process requirements, set thresholds to ensure stable operation of the equipment.

[0108] Further, if Figure 2As shown, the operating parameters of the aluminum melting furnace are regulated according to the temperature comparison results. The specific regulation process is as follows:

[0109] If the temperature comparison result is temperature result 1, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle;

[0110] Regenerative burner flame intensity: Increase the flame intensity. The specific range can be set to between 1600 and 2000°C to improve heating efficiency. For the initial melting stage or when heat conduction is poor, a high flame temperature greater than 1600°C can increase the radiant heat and increase the heating chamber temperature, thereby rapidly raising the melting chamber temperature and ensuring that the temperature difference ΔT quickly exceeds the threshold to effectively initiate the melting process. The upper limit of 2000°C is to prevent thermal shock to equipment and materials or energy waste due to excessively high temperatures.

[0111] The bubble generation rate and bubble velocity of the bubble generator: The bubble generation rate should be increased to ensure sufficient contact between the molten aluminum and the bubbles. The bubble generation rate can be adjusted to 0.5-1.5 m³ / h, and the bubble velocity can be set to 0.4-0.5 m / s to promote heat transfer.

[0112] Swirl airflow nozzle airflow velocity: Increase the airflow velocity to increase turbulence and heat transfer. The nozzle airflow velocity can be set in the range of 8-10m / s, which helps to quickly heat the molten aluminum.

[0113] If the temperature comparison result is temperature result 2, the bubble generation amount and bubble rate of the bubble generator are reduced and the flow rate of the airflow generated by the swirl airflow nozzle is reduced;

[0114] Regenerative burner flame intensity: Slightly adjust the flame intensity to maintain stable heating. The flame temperature can be controlled between 1500-1700°C. At this point, the melting chamber has heated up sufficiently and no further high-temperature heating is required. 1500°C is a low operating flame temperature that helps maintain the temperature and prevent further heating.

[0115] Bubble generator volume and bubble rate: Reduce the bubble volume and rate to avoid overheating. The bubble volume should be reduced to 0.3-0.6 m³ / h and the bubble rate should be adjusted to 0.2-0.4 m / s.

[0116] Air flow velocity of the swirl air flow nozzle: reduce the air flow rate to avoid unnecessary heat loss caused by excessively fast air flow. The flow rate can be adjusted to 5~8m / s.

[0117] If the temperature comparison result is temperature result three, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle;

[0118] Regenerative burner flame intensity: Significantly increase the flame intensity to accelerate the heating process. The flame temperature range should be set between 1800 and 2200°C to ensure that the temperature of the melting chamber can rise rapidly. The goal is to "break through the melting chamber temperature rise bottleneck," that is, to quickly compensate for low heat transfer efficiency. 2200°C is the upper limit allowed. High temperature helps to compensate for problems such as bubble efficiency or weak airflow velocity.

[0119] Bubble generation amount and bubble rate of the bubble generator: Greatly increase the bubble generation amount and rate. The specific range can be set to 1.0~2.0m³ / h, and the bubble rate can be set to 0.4~0.5m / s to enhance the heating efficiency of molten aluminum.

[0120] Air flow velocity of the swirl air flow nozzle: Increase the air flow velocity of the nozzle to 9~10m / s to increase the turbulence effect and ensure sufficient mixing of the molten aluminum and aluminum chips.

[0121] If the temperature comparison result is temperature result 4, the control module reduces the flame intensity of the regenerative burner, reduces the bubble generation amount and bubble rate of the bubble generator, and reduces the flow rate of the airflow generated by the swirl airflow nozzle;

[0122] Flame intensity of regenerative burners: Reduce flame intensity to prevent overheating. The flame temperature can be adjusted to between 1500 and 1700°C. This temperature range, combined with reducing the amount and rate of bubble generation and reducing the airflow rate at the nozzle, is a typical heat preservation and energy reduction strategy.

[0123] The bubble generation amount and bubble rate of the bubble generator: reduce the bubble generation amount and rate to avoid excessive heat transfer. The bubble generation amount should be set to 0.2~0.4m³ / h, and the bubble rate should be controlled at 0.1~0.3m / s.

[0124] Air flow velocity of the swirl air flow nozzle: reduce the air flow rate of the nozzle and set the flow rate range to 3~5m / s to reduce the speed of the air flow and avoid unnecessary energy loss.

[0125] In the description of the present invention, it should be understood that the terms "middle", "length", "upper", "lower", "front", "back", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0126] In the present invention, unless otherwise expressly specified or limited, a first feature "on" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. "Multiple" means at least two, such as two or three, unless otherwise expressly specified or limited.

[0127] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0128] The above is only for explaining the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention without creative work should be included in the scope of protection of the present invention.

Claims

1. Energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace, characterized by: The aluminum melting furnace comprises: A heating chamber, a melting chamber, at least one set of feeding side well chambers and a heating system; The heating chamber and the melting chamber are arranged side by side and are connected to each other through a first pipe, and the feeding side well chamber is connected to the heating chamber through a second pipe and is connected to the melting chamber through a third pipe; A regenerative burner is provided on one side of the heating chamber; Bubble generators are provided in multiple groups and arranged on the bottom side wall of the melting chamber, for generating bubbles and sending the bubbles into the interior of the molten aluminum; A plurality of swirl airflow nozzles are provided and arranged on the upper side wall of the melting chamber to generate a swirling airflow; The lower ends of the heating chamber and the melting chamber are both provided with slag outlets; The heating system includes: Temperature acquisition module, used to collect real-time temperature data inside the heating chamber and melting chamber; The furnace data processing module is used to obtain the real-time temperature data collected by the temperature acquisition module and obtain the real-time temperature difference between the heating chamber and the melting chamber; The control module obtains temperature comparison results based on the real-time temperatures inside the heating chamber and the melting chamber, as well as the real-time temperature difference between the heating chamber and the melting chamber, and adjusts the operating parameters of the aluminum melting furnace based on the temperature comparison results; The operating parameters of the aluminum melting furnace include the flame intensity of the regenerative burner, the bubble generation amount and bubble rate of the bubble generator, and the flow rate of the air flow generated by the swirl air flow nozzle.

2. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 1 is characterized in that: The feeding side well chambers, the first pipeline, the second pipeline and the third pipeline are each provided with two groups, and the two groups of the feeding side well chambers are arranged side by side.

3. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 1 is characterized in that: The diameter of the bubbles generated by the bubble generator is 10-100 μm, and the gas injection speed of a single hole is 0.1-0.5 m / s.

4. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 1 is characterized in that: The swirl airflow nozzle sprays airflow toward the central area of ​​the melting chamber at an angle of 20° to 45° with the horizontal plane, and the gas injection speed of the swirl airflow nozzle is 2 to 10 m / s.

5. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 1 is characterized in that: The temperature comparison results specifically include: temperature result 1, temperature result 2, temperature result 3, and temperature result 4; Temperature result 1: the real-time temperature difference between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature collection module is lower than the second minimum temperature threshold; Temperature result 2: the real-time temperature difference between the heating chamber and the melting chamber is lower than the first minimum temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is higher than the second maximum temperature threshold; Temperature result three: the real-time temperature difference between the heating chamber and the melting chamber is higher than the highest temperature threshold one, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is lower than the lowest temperature threshold two; Temperature result four: the real-time temperature difference between the heating chamber and the melting chamber is higher than the maximum temperature threshold one, and the real-time temperature data of the melting chamber collected by the temperature collection module is higher than the maximum temperature threshold two.

6. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 5 is characterized in that: The operating parameters of the aluminum melting furnace are regulated according to the temperature comparison results. The specific regulation process is as follows: If the temperature comparison result is temperature result 1, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle; If the temperature comparison result is temperature result 2, the control module reduces the bubble generation amount and bubble rate of the bubble generator and reduces the flow rate of the airflow generated by the swirl airflow nozzle; If the temperature comparison result is temperature result three, the control module increases the flame intensity of the regenerative burner, increases the bubble generation amount and bubble rate of the bubble generator, and increases the flow rate of the airflow generated by the swirl airflow nozzle; If the temperature comparison result is temperature result four, the control module reduces the flame intensity of the regenerative burner, reduces the bubble generation amount and bubble rate of the bubble generator, and reduces the flow rate of the airflow generated by the swirl airflow nozzle.

7. The energy-saving and environmentally friendly double-chamber double-side well aluminum melting furnace according to claim 6 is characterized in that: The minimum temperature threshold is set to 50-100°C. The second minimum temperature threshold is lower than or equal to 660°C; The maximum temperature threshold is set to 150-200°C; The second maximum temperature threshold is higher than 660°C.

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