Energy-saving environment-friendly double-chamber double-side-well aluminum smelting furnace and heating system thereof

Abstract

The invention discloses an energy-saving environment-friendly double-chamber double-side-well aluminum smelting furnace and a heating system thereof, and relates to the technical field of aluminum smelting furnaces, the energy-saving environment-friendly double-chamber double-side-well aluminum smelting furnace comprises a heating chamber, a smelting chamber and at least one group of feeding side well chambers; the heating chamber and the melting chamber are arranged side by side and communicate with each other through a first pipeline, and the feeding side well chamber communicates with the heating chamber through a second pipeline and communicates with the melting chamber through a third pipeline; a heat accumulating type combustor is arranged on one side of the heating chamber; the bubble generators are arranged on the side wall of the bottom of the melting chamber and used for generating bubbles and sending the bubbles into the molten aluminum; the multiple sets of rotational flow air flow nozzles are arranged on the side wall of the upper end of the melting chamber and used for generating rotational flow; the bubble generator generates small bubbles, the small bubbles are injected into molten aluminum through the side wall of the bottom, heat convection is enhanced, uniform heating of the molten aluminum is promoted, and the mixing effect of the molten aluminum and aluminum skimmings is enhanced.

Description

Technical Field

[0001] The present invention relates to the technical field of aluminum melting furnaces, and specifically to an energy-saving and environmental protection double-chamber double-sided well aluminum melting furnace and its heating system. Background Art

[0002] The side well feeding aluminum melting furnace adopts a double melting pool structure, with a feeding side well arranged at the rear of the furnace. The molten aluminum in the main melting pool and the side melting pool is circulated through an aluminum liquid pump; at the same time, an aluminum water vortex is formed in the feeding side well, and the raw materials (solid aluminum) are fed into the aluminum water vortex through a conveyor for melting. Due to its unique structure, the side well feeding furnace can reduce the labor intensity of feeding and reduce burning loss, etc., and is particularly suitable for the melting and regeneration process of recycled aluminum with low specific gravity and easy burning loss (such as aluminum chips).

[0003] The patent document with the patent publication number CN115711531A discloses a double-chamber furnace side well flue gas secondary combustion device, including a furnace body. The interior of the furnace body is divided into a heating chamber and a waste chamber. A burner is arranged in the heating chamber, and a supplementary heating burner is arranged in the waste chamber. The heating chamber is communicated with the waste chamber. A side well device is arranged at a position close to the heating chamber on one side of the furnace body. The side well device includes a debris well and a circulation pump connected to the debris well. A cover body is arranged above the debris well. A smoke exhaust hole is arranged on the side of the cover body close to the heating chamber, and the smoke exhaust hole is communicated with the heating chamber. An ignition gun inserted into the smoke exhaust hole is arranged on the cover body. In the present invention, the combustible flue gas generated by melting waste in the debris well is ignited by the ignition gun arranged on the cover body and sent into the heating chamber for secondary combustion, solving the problems of energy waste and environmental pollution caused by direct flue gas discharge, and achieving the purpose of energy reuse at the same time.

[0004] However, in the actual use process, the inventor 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] To solve the defects existing in the prior art, the present invention provides an energy-saving and environmental protection double-chamber double-sided well aluminum melting furnace and its heating system.

[0006] To solve the above technical problems, the present invention provides the following technical solutions: The present invention provides an energy-saving and environmental protection double-chamber double-sided well aluminum melting furnace, including: 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 pipeline. The feeding side well chamber is interconnected with the heating chamber through a second pipeline and is interconnected with the melting chamber through a third pipeline; A regenerative burner is arranged on one side of the heating chamber; The bubble generators are provided in multiple groups and arranged on the bottom side wall of the melting chamber, and are used to generate bubbles and send the bubbles into the interior of the molten aluminum. The swirling gas flow nozzles are provided in multiple groups and arranged on the upper side wall of the melting chamber, and are used to generate swirling gas flow.

[0007] As a preferred technical solution of the present invention, two sets of the feeding side well chambers, the first pipeline, the second pipeline and the third pipeline are provided, and the two sets of the feeding side well chambers are arranged side by side.

[0008] As a preferred technical solution of the present invention, the diameter of the bubbles generated by the bubble generators is 10 - 100 μm, and the single-hole gas injection speed is 0.1 - 0.5 m / s.

[0009] As a preferred technical solution of the present invention, the swirling gas flow nozzles jet gas flow towards the central area of the melting chamber at an angle of 20° - 45° to the horizontal plane, and the gas jet speed of the swirling gas flow nozzles is 2 - 10 m / s.

[0010] As a preferred technical solution of the present invention, slag discharge ports are provided at the lower ends of both the heating chamber and the melting chamber.

[0011] The heating system of the energy-saving and environment-friendly double-chamber and double-side well aluminum melting furnace, the heating system includes: A temperature acquisition module, which is used to acquire the real-time temperature data inside the heating chamber and the melting chamber; A furnace data processing module, which is used to obtain the real-time temperature data acquired by the temperature acquisition module and obtain the real-time temperature difference between the heating chamber and the melting chamber; A control module, which obtains a temperature comparison result according to the real-time temperatures inside the heating chamber and the melting chamber respectively and the real-time temperature difference between the heating chamber and the melting chamber, and adjusts the working parameters of the aluminum melting furnace according to the temperature comparison result.

[0012] As a preferred technical solution of the present invention, the working parameters of the aluminum melting furnace include the flame intensity of the regenerative burner, the bubble generation amount and bubble rate of the bubble generators, and the gas flow velocity generated by the swirling gas flow nozzles.

[0013] As a preferred technical solution of the present invention, the temperature comparison result specifically includes: temperature result one, temperature result two, temperature result three, temperature result four; Temperature result one, 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 acquired by the temperature acquisition module is lower than the second minimum temperature threshold; Temperature result two, 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 acquired 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 first highest temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is lower than the second lowest temperature threshold; Temperature result four: The real-time temperature difference between the heating chamber and the melting chamber is higher than the first highest temperature threshold, and the real-time temperature data of the melting chamber collected by the temperature acquisition module is higher than the second highest temperature threshold.

[0014] As a preferred technical solution of the present invention, the working parameters of the aluminum melting furnace are adjusted according to the temperature comparison result, and the specific adjustment process is as follows: If the temperature comparison result is temperature result one, 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 two, 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.

[0015] As a preferred technical solution of the present invention, the first lowest temperature threshold is set to 50 - 100 °C; The second lowest temperature threshold is lower than or equal to 660 °C; The first highest temperature threshold is set to 150 - 200 °C; The second highest temperature threshold is higher than 660 °C.

[0016] The beneficial effects of the present invention are as follows: 1. Through the design of the bubble generator and the swirl airflow nozzle, the present invention improves the airflow distribution in the melting chamber. The bubble generator generates fine bubbles, which are injected into the molten aluminum through the bottom side wall, enhancing the heat convection and promoting the uniform heating of the molten aluminum. The swirl airflow nozzle generates a rotating airflow on the upper side wall of the melting chamber, effectively mixing and evenly distributing the airflow in the melting chamber; in addition, the bubble generator helps the molten aluminum and aluminum chips to be fully mixed by generating fine bubbles; the swirl airflow nozzle further strengthens the rotation effect of the airflow and enhances the mixing effect of the molten aluminum and aluminum chips.

[0017] 2. In the present invention, by optimizing the heating system and combining the regulation of real-time temperature data acquisition, temperature difference control, regenerative burner, bubble generator and swirl air nozzle, the operating parameters of the aluminum melting furnace (such as flame intensity, bubble generation amount, bubble rate, air flow velocity, etc.) can be dynamically adjusted, so that the melting process is more continuous, stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The 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 to the present invention. In the drawings: Figure 1 is a schematic structural diagram of the energy-saving and environmental-friendly double-chamber double-side well aluminum melting furnace of the present invention; Figure 2 is a flow chart of the heating system of the present invention.

[0019] 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 air nozzle; 10. Slag discharge port. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The following specific examples are used to illustrate the embodiments of the present disclosure. Those skilled in the art can easily understand other advantages and effects of the present disclosure from the content 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 various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present disclosure without creative efforts belong to the scope of protection of the present disclosure.

[0021] As Figure 1 shown, the energy-saving and environmental-friendly double-chamber double-side well aluminum melting furnace of the present invention is designed with a double-chamber double-side well structure, including: a heating chamber, a melting chamber and at least one set of feeding side well chambers, preferably two sets; The heating chamber and the melting chamber are arranged side by side and communicated with each other through the first pipeline. The feeding side well chamber is communicated with the heating chamber through the second pipeline and with the melting chamber through the third pipeline, ensuring that the melting chamber can share heat with the heating chamber through the pipeline, forming a good heat exchange environment, so as to ensure that the addition of aluminum scraps, molten aluminum and other raw materials can flow into the melting chamber more efficiently. In this design, the setting of the feeding side well chamber helps to avoid excessive deposition of aluminum scraps in the traditional melting furnace, and optimizes the addition and mixing of raw materials; On one side of the heating chamber, there is a regenerative burner. This burner continuously releases heat in the heating chamber through regenerative elements, 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, improving the heat utilization rate. The regenerative burner is on one side of the heating chamber and can directly act on the melting of molten aluminum, improving its efficiency. Preferably, in the present invention, the regenerative burner uses an energy-saving and environmentally friendly dispersed combustion regenerative combustion gun; There are multiple bubble generators arranged on the bottom side wall of the melting chamber, which 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 the uniform heating and mixing of the molten aluminum; There are multiple swirl air nozzles arranged on the upper side wall of the melting chamber, which are used to generate swirling airflows. The swirl air nozzles are arranged on the upper side wall of the melting chamber, and the ejected airflows are 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; At the lower ends of both the heating chamber and the melting chamber, there are slag discharge ports. The setting of the slag discharge ports enables the timely discharge of aluminum chips and impurities during the melting process of molten aluminum, ensuring the cleanliness of the melting process. By regularly discharging slag, the accumulation of impurities can be prevented, thereby reducing the pollution risk during the melting process and extending the service life of the equipment. The design of the slag discharge ports not only considers the discharge of impurities but also needs to consider the fluidity and stability of the molten aluminum during the melting process. A reasonable slag discharge port layout can effectively guide the flow of molten aluminum and avoid fluctuations in the temperature of the molten aluminum or uneven melting caused by poor slag discharge.

[0022] The double-chamber double-side well structure of the present invention can continuously feed materials simultaneously from two feeding side well chambers, improving the production efficiency compared with ordinary double-chamber side well furnaces.

[0023] Furthermore, as Figure 1 shown, there are two sets each of the feeding side well chambers, the first pipeline, the second pipeline, and the third pipeline. The two sets of feeding side well chambers are arranged side by side. The aluminum water circulation system pumps the aluminum water out of the heating chamber and sends it into the melting chamber through two aluminum water pumps. The aluminum water forms a vortex in the melting chamber through the synergistic action of specific swirling airflows and microbubbles, quickly inhaling aluminum chips and completing the melting. The melted aluminum water then returns to the heating chamber again.

[0024] The system pumps the aluminum water out of the heating chamber and sends it into the melting chamber through two aluminum water pumps, ensuring the efficient flow of the aluminum water between the heating chamber and the melting chamber.

[0025] The function of the aluminum water pump is not only to transport molten aluminum, but also to ensure the flow rate and direction of the molten aluminum. In traditional aluminum melting furnaces, due to poor flow of molten aluminum, some molten aluminum is overheated while other areas are underheated, resulting in low melting efficiency.

[0026] The flow of molten aluminum in the melting chamber not only depends on the efficient transportation of the aluminum water pump, but also on the synergistic effect of the swirling air flow nozzle and the bubbles generated by the bubble generator. These bubbles and the swirling air flow can form strong vortices in the molten aluminum, enabling the aluminum chips to be fully sucked in and accelerating the melting process in a short time.

[0027] The swirling air flow nozzle is located on the upper side wall of the melting chamber and jets air flow at a specific angle to form a stable swirling air flow. These air flows can directly act on the surface of the molten aluminum, promoting the rapid mixing of aluminum chips and molten aluminum. The fine bubbles generated by the bubble generator can enhance the melting efficiency through the buoyancy of the bubbles and the multiple collisions of micro-bubbles. This design can greatly reduce the precipitation and residence time of aluminum chips, ensuring the full reaction and melting of aluminum chips and molten aluminum.

[0028] The molten aluminum after melting is rapidly melted in the melting chamber through the synergistic effect with bubbles and air flow, and is sent back to the heating chamber by the aluminum water pump. The design of the heating chamber includes a regenerative burner, which can ensure that the molten aluminum after melting is effectively reheated to maintain its temperature and thermal energy. In this way, the molten aluminum can not only maintain a stable temperature during the melting process, but also effectively reduce energy loss and improve the thermal efficiency of the overall system.

[0029] Through the design of multiple groups of pipelines between the melting chamber and the heating chamber, the molten aluminum can circulate between the heating chamber and the melting chamber, which not only improves the melting efficiency of the molten aluminum, but also makes full use of every degree of thermal energy, ensuring the energy conservation and environmental protection characteristics of the system.

[0030] Furthermore, as Figure 1 shown, 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; Such settings can ensure that the bubbles are evenly distributed in the molten aluminum during the melting process, avoiding overheating or local cooling of the molten aluminum. This design significantly improves the melting rate and optimizes the mixing effect of the molten aluminum and aluminum chips.

[0031] The diameter of the bubbles is between 10 - 100 μm, and this range can ensure that the bubbles have sufficient surface area to improve the heat exchange efficiency between the bubbles and the molten aluminum. Smaller bubbles can better diffuse into the melting area, while larger bubbles help to enhance the circulating flow of the molten aluminum, thus achieving the effect of accelerating melting.

[0032] In addition, the single-hole gas injection speed of the bubbles is set to 0.1 - 0.5 m / s. Within this speed range, gas injection will not cause excessive disturbance to the melting process, and at the same time, it can effectively generate the required amount of bubbles. A reasonable bubble injection speed can avoid bubble aggregation, ensure the uniform distribution of bubbles in the molten aluminum, and thus improve the stability and efficiency of the entire melting process.

[0033] The swirling gas flow nozzle sprays gas towards the central area of the melting chamber at an angle of 20° - 45° to the horizontal plane, and the gas injection speed of the swirling gas flow nozzle is 2 - 10 m / s; This injection angle can effectively guide the gas flow towards the central area of the melting chamber, so that the temperature distribution in the melting chamber is more uniform, the aluminum chips can be better mixed with the molten aluminum, and the occurrence of deposition phenomena can be avoided.

[0034] The gas injection speed is set to 2 - 10 m / s to ensure that the gas flow has sufficient kinetic energy and flow rate, can fully mix the aluminum chips and the molten aluminum in a short time, and at the same time avoid the problem of uneven melting caused by too strong or too weak gas flow.

[0035] The gas flow speed and injection angle of the swirling gas flow nozzle are precisely regulated to ensure the best melting effect. For example, when the gas flow speed in the melting chamber is too low, the aluminum chips may not effectively enter the molten aluminum, resulting in incomplete melting; on the contrary, when the gas flow speed is too high, it may disrupt the overall stability in the melting chamber. Therefore, reasonably adjusting the gas injection speed (2 - 10 m / s) and injection angle (20° - 45°) of the nozzle is crucial for maintaining a stable melting environment.

[0036] Furthermore, as Figure 2 shown, the heating system includes: A temperature acquisition module for acquiring real-time temperature data inside the heating chamber and the melting chamber; The temperature acquisition module is arranged at key positions in the heating chamber and the melting chamber (such as: the middle of the chamber body, near the combustion area, near the molten aluminum flow area, etc.) to obtain the internal temperature of these two main working cavities in real time. Preferably, this module uses a high-sensitivity thermocouple (such as a K-type thermocouple), which can work continuously and accurately in high-temperature, high-pressure, and highly corrosive environments, and has high time resolution and high spatial resolution to ensure the timeliness and accuracy of system feedback.

[0037] In the heating chamber, optionally, the temperature acquisition module is provided with three groups of sensors, and the three groups of sensors are distributed in a triangular shape (2 on the top wall and 1 on the side wall) to monitor the flame radiation area and the hot gas flow distribution; In the melting chamber, optionally, the temperature acquisition module is provided with four groups of sensors, and two sensors are set at 10 cm and 30 cm below the molten aluminum liquid level respectively to provide real-time feedback on the temperature gradient of the molten aluminum.

[0038] 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; This module is used to receive the data transmitted by the temperature acquisition module and calculate the real-time temperature difference between the heating chamber and the melting chamber based on the set logic and algorithms. This temperature difference is an important indicator for judging the heat transfer efficiency and process state of the furnace body; This module can perform dynamic comparison based on historical data, current data and set thresholds to determine whether there are phenomena such as temperature conduction lag, insufficient heating or overheating in the current furnace, providing a data basis for regulation; For example, if the temperature of the heating chamber is much higher than that of the melting chamber, it may indicate that the heat cannot be effectively conducted to the melting cavity; on the contrary, it may be problems such as overheating of the melting chamber and waste of thermal energy.

[0039] The control module obtains the temperature comparison result according to the real-time temperatures inside the heating chamber and the melting chamber respectively and the real-time temperature difference ΔT between the heating chamber and the melting chamber, and adjusts the working parameters of the aluminum furnace according to the temperature comparison result; The control module is the execution core of the heating system. Based on the temperature difference result provided by the furnace data processing module and combined with the actual temperatures of the heating chamber and the melting chamber respectively, it comprehensively analyzes the current working condition of the furnace body and performs linkage and dynamic intelligent control on multiple operating parameters such as the flame intensity of the burner, the working state of the bubble generator, and the jet flow rate of the swirling air nozzle.

[0040] Through this feedback closed-loop control method, the system can not only solve the problems of "temperature response lag, untimely adjustment, and rough control" existing in traditional aluminum furnaces, but also achieve precise temperature control and optimal energy saving, ensure the stable and reliable operation of the aluminum furnace, and improve the overall operation efficiency.

[0041] In summary, the double-chamber structure and the double-sided well design enhance the heat convection effect inside the furnace, ensuring more uniform heat exchange between the melting chamber and the heating chamber.

[0042] By using the cooperation of the bubble generator and the swirling air nozzle, the melting efficiency of the aluminum water is improved by accelerating the mixing of the aluminum water and the aluminum chips.

[0043] Through the collaborative work of the temperature acquisition module and the data processing module, the temperature difference inside the furnace is monitored and adjusted in real time, making the temperature control more precise and avoiding energy waste caused by uneven temperature.

[0044] Furthermore, as Figure 2 shown, the working parameters of the aluminum 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 swirling air nozzle.

[0045] Specifically, the flame intensity of the regenerative burner, which is a key component in the heating process of the aluminum melting furnace. By adjusting its flame intensity, the heat output can be 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, the flame intensity may need to be reduced to prevent unnecessary energy waste caused by excessive temperature.

[0046] The bubble generation amount and bubble rate of the bubble generator. The bubble generator generates tiny bubbles to help stir the molten aluminum in the melting furnace, enhancing the heat convection and the mixing effect of the aluminum chips. When the temperature in the melting chamber is too low or the temperature difference is large, the bubble generator will be adjusted to a higher generation amount and a faster bubble rate to accelerate the melting process of the molten aluminum. On the contrary, if the temperature is too high, the bubble generation amount and rate will be appropriately reduced to avoid excessive heat being carried away by too many bubbles.

[0047] The flow velocity of the air flow generated by the swirling air flow nozzle. The swirling air flow nozzle sprays a swirling air flow to evenly distribute the hot air flow in the melting chamber, helping to improve the temperature distribution of the molten aluminum and promoting the mixing of the molten aluminum. When the temperature in the melting chamber is too low, the air flow velocity of the swirling nozzle will increase to accelerate the melting process; when the temperature is too high, the nozzle flow velocity will be appropriately reduced to avoid energy waste caused by excessive temperature.

[0048] Furthermore, as Figure 2 shown, the temperature comparison results specifically include: Temperature Result One, Temperature Result Two, Temperature Result Three, and Temperature Result Four; Temperature Result One: 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; This situation usually occurs when the system heating is insufficient, which may lead to too low a temperature in the melting chamber and affect the melting efficiency. At this time, it is necessary to enhance the heating effect by increasing the flame intensity of the burner, increasing the bubble generation amount of the bubble generator, and the air flow velocity of the swirling air flow nozzle, and quickly raise the temperature of the melting chamber to ensure the smooth melting of the molten aluminum.

[0049] In addition, since the melting temperature of molten aluminum is usually about 660°C, but considering factors such as heat loss, the temperature of the heating chamber should be higher than this value.

[0050] The first minimum temperature threshold should be set according to the working temperature difference between the melting chamber and the heating chamber. Generally, when the temperature difference (ΔT) in the melting chamber is lower than 50 - 100°C, it indicates that the heating process has not fully started.

[0051] Preferably, in this embodiment, the first minimum 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 insufficient heating.

[0052] The second minimum temperature threshold is usually set near the lowest melting temperature of the molten aluminum. Considering that the actual melting temperature of the molten aluminum is 660 °C, it is necessary to ensure that the temperature of the melting chamber does not fall below this value.

[0053] Preferably, in this embodiment, the second minimum temperature threshold is set to 660 °C. That is, when the temperature of the melting chamber is lower than this value, it indicates that the melting temperature is insufficient, resulting in low melting efficiency.

[0054] Temperature result two: 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. At this time, although the problem of insufficient heating does not occur, the temperature of the melting chamber is too high, which may lead to overheating and even energy consumption waste. At this time, overheating is avoided by reducing the bubble generation amount, the bubble rate, and the flow rate of the swirling air nozzle airflow, and unnecessary energy consumption is reduced.

[0055] Temperature result three: The real-time temperature difference ΔT between the heating chamber and the melting chamber is higher than the first maximum 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. This result indicates that the temperature of the melting chamber fails to increase effectively, which may lead to slow melting speed and low melting efficiency. At this time, it is necessary to increase the flame intensity of the regenerative burner, strengthen the function of the bubble generator, and increase the airflow rate of the swirling air nozzle to accelerate the heating of the molten aluminum and the melting of the aluminum chips.

[0056] Temperature result four: The real-time temperature difference ΔT between the heating chamber and the melting chamber is higher than the first maximum 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. At this time, 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 the bubble generation amount and rate to prevent overheating and reduce energy loss.

[0057] The first maximum temperature threshold should consider the upper temperature limit during the melting process to avoid damage to the molten aluminum or energy waste caused by overheating. According to the structure of the aluminum melting furnace, it is recommended to set the temperature difference (ΔT) between 150 and 200 °C.

[0058] Preferably, in this embodiment, the first 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.

[0059] The second maximum temperature threshold is used to prevent overheating of the melting chamber and ensure that the molten aluminum is not overheated or evaporated. Considering that the upper melting temperature limit of the molten aluminum should be appropriately higher than 660 °C to avoid overheating, a reasonable upper temperature limit is set.

[0060] Preferably, in this embodiment, the second highest temperature threshold is set to 750 °C. When the temperature in the melting chamber is higher than this value, it indicates that the temperature in the melting chamber is too high, which may lead to energy waste or excessive evaporation of molten aluminum.

[0061] The temperature threshold can be obtained based on the following methods: Experimental data: Obtain the actual temperature difference and melting temperature range between the melting chamber and the heating chamber through experiments, and determine a reasonable temperature threshold based on this.

[0062] Thermal equilibrium model: Determine the optimal temperature difference range between the melting chamber and the heating chamber through thermodynamic calculation models and thermal equilibrium analysis, and then set the temperature threshold.

[0063] Or according to production experience and equipment requirements: Set the threshold according to different aluminum melting furnace designs and aluminum water treatment requirements, combined with production experience and process requirements to ensure the stable operation of the equipment.

[0064] Furthermore, as Figure 2 shown, regulating the working parameters of the aluminum melting furnace according to the temperature comparison result, the specific regulation process is as follows: If the temperature comparison result is temperature result one, 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 velocity of the airflow generated by the swirl airflow nozzle; Flame intensity of the regenerative burner: Increase the flame intensity. The specific range can be set so that the flame temperature of the burner is between 1600 and 2000 °C to improve the heating efficiency. Corresponding to the initial stage of melting or poor heat conduction, a high flame temperature greater than 1600 °C can increase the radiant heat, increase the temperature of the heating chamber, thus rapidly raising the temperature of the melting chamber, and ensuring that the temperature difference ΔT quickly exceeds the threshold to effectively start the melting process. The upper limit of 2000 °C is to prevent thermal shock to the equipment materials or energy consumption waste caused by ultra-high temperature.

[0065] Bubble generation amount and bubble rate of the bubble generator: The bubble generation amount should be increased to ensure sufficient contact between the molten aluminum and the bubbles. The bubble generation amount can be adjusted to 0.5 - 1.5 m³ / h, and the bubble rate is set to 0.4 - 0.5 m / s to promote heat transfer.

[0066] Airflow velocity of the swirl airflow nozzle: Increase the airflow velocity to increase turbulence and heat transfer. The airflow rate range of the nozzle can be set to 8 - 10 m / s, which helps to quickly heat the molten aluminum.

[0067] If the temperature comparison result is temperature result two, reduce the bubble generation amount and bubble rate of the bubble generator and reduce the flow velocity of the airflow generated by the swirl airflow nozzle; Flame intensity of the regenerative burner: Slightly adjust the flame intensity to maintain stable heating. The flame temperature can be controlled between 1500 and 1700 °C. At this time, the melting chamber has been heated sufficiently and there is no need for continuous high-temperature heat supply. 1500 °C is a relatively low operating flame temperature, which helps to maintain the temperature and avoid further temperature rise.

[0068] Bubble generation amount and bubble rate of the bubble generator: Reduce the bubble generation amount and rate to avoid overheating. The bubble generation amount should be reduced to 0.3 - 0.6 m³ / h, and the bubble rate should be adjusted to 0.2 - 0.4 m / s.

[0069] Airflow velocity of the swirl airflow nozzle: Reduce the airflow rate to avoid unnecessary heat loss caused by too fast airflow. The flow velocity can be adjusted to 5 - 8 m / s.

[0070] 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 rate of the bubble generator, and increases the airflow velocity generated by the swirl airflow nozzle; Flame intensity of the regenerative burner: Greatly increase the flame intensity to accelerate the heating process. The flame temperature range should be set to 1800 - 2200 °C to ensure that the temperature of the melting chamber can rise rapidly. The goal is to "break through the bottleneck of the melting chamber temperature rise", that is, to quickly compensate for the low heat transfer efficiency. 2200 °C is the allowable upper limit value, and high temperature helps to make up for problems such as weak bubble efficiency or airflow velocity.

[0071] 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 - 2.0 m³ / h, and the bubble rate can be set to 0.4 - 0.5 m / s to enhance the heating efficiency of the molten aluminum.

[0072] Airflow velocity of the swirl airflow nozzle: Increase the airflow rate of the nozzle to 9 - 10 m / s to increase the turbulence effect and ensure sufficient mixing of the molten aluminum and aluminum chips.

[0073] 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 rate of the bubble generator, and reduces the airflow velocity generated by the swirl airflow nozzle; Flame intensity of the regenerative burner: Reduce the flame intensity to prevent overheating. The flame temperature can be adjusted to between 1500 and 1700 °C. This temperature range, combined with reducing the bubble generation amount and rate and the airflow rate of the nozzle, is a typical strategy for heat preservation and energy consumption reduction.

[0074] 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 - 0.4 m³ / h, and the bubble rate should be controlled at 0.1 - 0.3 m / s.

[0075] Air flow velocity of the swirling air nozzle: Reduce the air flow rate of the nozzle, and set the flow velocity range to 3 - 5 m / s to reduce the air flow velocity and avoid unnecessary energy loss.

[0076] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "middle", "length", "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings. It is 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 operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0077] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. The meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and defined, terms such as "install", "connect", "couple", "fix", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection, an electrical connection, or communicable with each other; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] The above is only for illustrating the embodiments of the present invention and is not used to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc. made without creative labor within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Energy-saving and environmental protection double-chamber and double-sided well aluminum melting furnace, characterized in that, Comprising: A heating chamber, a melting chamber and at least one set of charging side well chambers; The heating chamber and the melting chamber are arranged side by side and interconnected through a first pipeline. The charging side well chamber is interconnected with the heating chamber through a second pipeline and with the melting chamber through a third pipeline; A regenerative burner is arranged on one side of the heating chamber; A plurality of bubble generators are arranged on the bottom side wall of the melting chamber and are used for generating bubbles and sending the bubbles into the interior of the molten aluminum; A plurality of swirling air flow nozzles are arranged on the upper side wall of the melting chamber and are used for generating swirling air flows.

2. The energy-saving and environment-friendly double-chamber and double-sided well aluminum melting furnace according to claim 1, wherein, There are two sets of the charging side well chambers, the first pipeline, the second pipeline and the third pipeline, and the two sets of charging side well chambers are arranged side by side.

3. The energy-saving and environmental-friendly double-chamber and double-sided well aluminum melting furnace according to claim 1, wherein 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.

4. The energy-saving and environment-friendly double-chamber and double-sided well aluminum melting furnace according to claim 1, wherein The swirling air flow nozzle sprays air flow towards the central area of the melting chamber at an angle of 20° - 45° to the horizontal plane, and the gas injection speed of the swirling air flow nozzle is 2 - 10 m / s.

5. The energy-saving and environmental-friendly double-chamber and double-side well aluminum melting furnace according to claim 1, characterized in that Discharge ports are arranged at the lower ends of the heating chamber and the melting chamber.

6. The heating system of the energy-saving and environment-friendly double-chamber double-sided well aluminum melting furnace, which is used in any one of the energy-saving and environment-friendly double-chamber double-sided well aluminum melting furnaces of claims 1-5, is characterized in that, The heating system includes: A temperature acquisition module for acquiring real-time temperature data inside the heating chamber and the melting chamber; A furnace data processing module for obtaining the real-time temperature data acquired by the temperature acquisition module and obtaining the real-time temperature difference between the heating chamber and the melting chamber; A control module, according to the real-time temperatures inside the heating chamber and the melting chamber respectively and the real-time temperature difference between the heating chamber and the melting chamber, obtains a temperature comparison result, and regulates the working parameters of the aluminum melting furnace according to the temperature comparison result.

7. The heating system of the energy-saving and environment-friendly double-chamber and double-sided well aluminum melting furnace according to claim 6, characterized in that, The working 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 air flow velocity generated by the swirling air flow nozzle.

8. The heating system of the energy-saving and environment-friendly double-chamber and double-side well aluminum melting furnace according to claim 7, characterized in that, The temperature comparison result specifically includes: Temperature Result One, Temperature Result Two, Temperature Result Three, Temperature Result Four; Temperature Result One, 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 acquired by the temperature acquisition module is lower than the second minimum temperature threshold; Temperature Result Two, 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 acquired 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 first maximum temperature threshold, and the real-time temperature data of the melting chamber acquired by the temperature acquisition module is lower than the second minimum temperature threshold; Temperature Result Four, the real-time temperature difference between the heating chamber and the melting chamber is higher than the first maximum temperature threshold, and the real-time temperature data of the melting chamber acquired by the temperature acquisition module is higher than the second maximum temperature threshold.

9. The heating system of the energy-saving and environment-friendly double-chamber and double-sided well aluminum melting furnace according to claim 8, characterized in that, The regulation of the working parameters of the aluminum melting furnace according to the temperature comparison result, the specific regulation process is: If the temperature comparison result is Temperature Result One, 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 air flow velocity generated by the swirling air flow nozzle; If the temperature comparison result is Temperature Result Two, the control module decreases the bubble generation amount and bubble rate of the bubble generator and decreases the air flow velocity generated by the swirling air flow 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 velocity of the air flow generated by the swirl air flow nozzle; If the temperature comparison result is temperature result four, the control module decreases the flame intensity of the regenerative burner, decreases the bubble generation amount and bubble rate of the bubble generator, and decreases the flow velocity of the air flow generated by the swirl air flow nozzle.

10. The heating system of the energy-saving and environment-friendly double-chamber and double-side well aluminum melting furnace according to claim 8, characterized in that, The first minimum temperature threshold is set to 50 - 100 °C; The second minimum temperature threshold is lower than or equal to 660 °C; The first maximum temperature threshold is set to 150 - 200 °C; The second maximum temperature threshold is higher than 660 °C.

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