Immersed combustion glass pre-melting system and glass melting furnace feeding method

Abstract

The invention relates to the technical field of glass melting furnaces, in particular to an immersed combustion glass pre-melting system and a glass melting furnace feeding method.The immersed combustion glass pre-melting system comprises a plurality of pre-melting units separately arranged at an inlet of a main melting furnace; the melting temperatures of the plurality of pre-melting units are different, so that the glass liquid entering the main melting furnace generates a transverse temperature gradient for convection homogenization. Aiming at the problem that a pre-melting system in the prior art easily generates a flowing dead zone at a corner position, a molten pool is divided into a plurality of discrete pre-melting units, the volume of a single molten pool is reduced, so that the problem of non-uniform temperature conduction in the molten pool is avoided, and meanwhile, the pre-melting temperature of each pre-melting unit is controlled to have a certain difference, so that the pre-melting efficiency is improved. Therefore, when feeding is carried out on the main melting furnace, a specific temperature gradient is generated in the main melting furnace to enhance convection homogenization of molten glass among the pre-melting units, and the temperature and the distribution uniformity of raw materials are improved.

Description

Technical Field

[0001] This invention relates to the field of glass melting furnace technology, specifically to a submerged combustion glass pre-melting system and a glass melting furnace feeding method. Background Technology

[0002] A glass melting furnace is a glass production device that melts raw glass materials, such as quartz sand, soda ash, and limestone, into molten glass for subsequent forming and processing in a glass production line. Common melting furnaces include tank furnaces, crucible furnaces, and electric furnaces. They typically have a melting pool and use fuel combustion or electric heating to allow the glass raw materials to undergo melting, refining, homogenization, and cooling processes within the furnace. Normally, because the glass raw materials are stored at room temperature, when the glass production line requires continuous feeding, the room-temperature raw materials will cause cold spots in the already molten glass within the furnace, resulting in uneven melting. This necessitates reheating and melting, leading to multiple reheating processes during continuous production and resulting in poor production efficiency. To solve this problem, existing technologies typically introduce a pre-melting system before the glass melting furnace to separate the melting and refining stages of the raw materials.

[0003] For example, patent application CN202510564144.8 discloses a low-carbon glass melting furnace using a pre-melting pool, relating to the field of glass manufacturing technology, and addressing the problem of reducing energy consumption. It includes a pre-melting pool using electro-melting or submerged combustion, and a refining pool connected to it using flame combustion. The upper space of the pre-melting pool is equipped with a cold top structure, and the upper structure of the refining pool adopts an arch structure, and is sealed to the upper space of the pre-melting pool through an L-shaped hanging wall. During the glass melting process, the silicate formation stage and the glass formation stage are completed in the pre-melting pool, and the glass molten refining stage is completed in the refining pool. By connecting the pre-melting pool and the refining pool, using electro-melting or submerged combustion heating in the pre-melting pool, and using flame heating in the combustion space in the refining pool, and considering the different energy supply requirements of different areas of the glass melting furnace at each stage of the glass melting process, a new functional zoning structure is specifically developed and designed, significantly reducing carbon emissions and energy consumption.

[0004] For example, patent application CN202111650995.2 discloses a glass melting furnace with batch preheating function. It includes a glass tank furnace (1), molten glass (7), a flame space (10), and a flame torch (5). The features are: at least one preheating tank (2) is connected to one side of the glass tank furnace (1), molten glass (7) is provided in the preheating tank (2), an electric heating device (3) is provided in the preheating tank (2), a batch feeder (8) is provided above the preheating tank (2), and a bubbling device (4) is provided in the glass tank furnace (1). The structure is simple and easy to use. It is easy to modify existing equipment and the modification cost is low. It can effectively preheat the batch, reduce the fluctuation of kiln temperature and kiln pressure caused by the batch entering the kiln, so as to maintain the stability of kiln temperature and kiln pressure in the melting section of the melting furnace, stabilize the operation process, realize the efficient and rapid melting of molten glass in the tank furnace, improve the heat absorption efficiency of molten glass in the melting furnace, and thus improve the quality of molten glass.

[0005] However, in actual implementation, the inventors found that in this type of technical solution, since a large pre-melting pool is set up in front of the melting furnace and then the material is fed to the main melting furnace through a conveying pipe, dead zones of glass flow are easily formed at the side wall of the pre-melting pool due to flow field problems, resulting in uneven heat transfer. Summary of the Invention

[0006] To address the aforementioned problems in the existing technology, a submerged combustion glass pre-melting system is provided. On the other hand, a glass melting furnace feeding method based on this glass pre-melting system is also provided.

[0007] The specific technical solution is as follows: A submerged combustion glass pre-melting system includes multiple pre-melting units separately arranged at the inlet of the main melting furnace; The pre-melting unit includes a molten pool and a lance; Multiple lances are distributed at the bottom of the molten pool and positioned upwards to melt the glass raw material, allowing the glass raw material to undergo submerged combustion in the molten pool; The melting temperatures of the multiple pre-melting units are different, so that the molten glass entering the main melting furnace generates a lateral temperature gradient for convection homogenization.

[0008] On the other hand, the molten pool is in the shape of a hollow elongated cube; The interior of the molten pool is lined with electrofused bricks; Multiple lances are arranged in a lattice pattern at the bottom of the molten pool.

[0009] On the other hand, a screw feeder is provided on the top or first side of the molten pool; The screw feeder is positioned inside the molten pool near the surface of the molten glass.

[0010] On the other hand, a smoke exhaust channel is provided at the top of the molten pool.

[0011] On the other hand, a discharge channel is provided at the bottom or on the second side of the molten pool; The unloading channel has a downwardly inclined cylindrical structure; The end of the unloading channel is connected to the main melting furnace.

[0012] A method for feeding materials into a glass melting furnace, applicable to the aforementioned glass pre-melting system; The glass melting furnace feeding method includes: Step S1: Receive production requirements and extract the current batch feed quantity from the production requirements; Step S2: Determine the number of pre-melting units by looking up a table according to the current batch feed quantity; Step S3: Select the corresponding pre-melting unit along the axial direction of the main melting furnace according to the number of pre-melting units; Step S4: Feed material using the selected pre-melting unit.

[0013] On the other hand, the procedure after performing step S3 and before performing step S4 also includes: Step A31: Match the corresponding temperature field template according to the number of pre-melting units; Step A32: Configure temperature parameters for each pre-melting unit according to the temperature field template to form a specific temperature gradient; In step S4, the pre-melting unit is controlled to melt the glass raw material based on the temperature parameter.

[0014] On the other hand, the procedure after performing step A32 and before performing step S4 also includes: Step A33: Determine the clarifying agent to be added to the pre-melting unit according to the temperature parameters.

[0015] The above technical solution has the following advantages or beneficial effects: To address the problem of dead zones in flow at corners in existing pre-melting systems, this solution reduces the volume of a single molten pool by dividing the molten pool into multiple discrete pre-melting units. This avoids uneven temperature conduction within the molten pool. Furthermore, by controlling the pre-melting temperature of each pre-melting unit to have a certain difference, a specific temperature gradient is generated within the main melting furnace during feeding, thereby enhancing the homogeneity of glass convection between the pre-melting units and improving the uniformity of temperature and raw material distribution. Attached Figure Description

[0016] Embodiments of the invention will be described more fully with reference to the accompanying drawings. However, the drawings are for illustration and explanation only and do not constitute a limitation on the scope of the invention.

[0017] Figure 1 This is a schematic diagram of the pre-melting unit according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the main melting furnace according to an embodiment of the present invention; Figure 3 This is a schematic diagram of a method according to an embodiment of the present invention; Figure 4 This is a schematic diagram of step A31 in an embodiment of the present invention; Figure 5 This is a schematic diagram of step A33 in an embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0020] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the scope of the invention.

[0021] This invention includes: A submerged combustion glass pre-melting system, such as Figure 1 and Figure 2 As shown, it includes multiple pre-melting units A1 that are separately arranged at the inlet of the main melting furnace A2; Pre-melting unit A1 includes a molten pool 1 and a lance 2; Multiple lances 2 are distributed at the bottom of the molten pool 1 and set upward to melt the glass raw material, so that the glass raw material is immersed in the molten pool for combustion; The melting temperatures of the multiple pre-melting units A1 are different, so that the molten glass entering the main melting furnace A2 will generate a lateral temperature gradient for convection homogenization.

[0022] Specifically, addressing the problem of dead zones in flow at corners in existing pre-melting systems, this solution reduces the volume of a single molten pool by dividing the molten pool into multiple discrete pre-melting units, thereby avoiding uneven temperature conduction within the molten pool. Furthermore, by controlling the pre-melting temperature of each pre-melting unit to have a certain difference, a specific temperature gradient is generated within the main melting furnace during feeding, enhancing the homogeneity of glass convection between pre-melting units and improving the uniformity of temperature and raw material distribution.

[0023] Specifically, in actual implementation, the aforementioned glass pre-melting system is located upstream of the main melting furnace A2. The glass pre-melting system mainly consists of multiple pre-melting units A1 and a controller.

[0024] The main structure of the pre-melting unit A1 is roughly a hollow rectangular molten pool 1. A screw feeder 3 is provided on the side wall or the upper front of the molten pool 1 in the feeding direction to feed glass raw materials into the interior of the molten pool 1. The raw materials include at least two parts: quartz sand and clarifier. Limestone and other materials may be added as needed to adjust the composition of the molten glass.

[0025] The main body of the molten pool 1 is made of refractory materials, such as refractory bricks or refractory bricks lining the steel structure.

[0026] Multiple lances 2 are distributed at the bottom of the molten pool 1. Each lance 2 is connected to an external gas mixing pipeline, which consists of two parts: a natural gas pipeline and an oxidizing gas pipeline, each connected to a mixing valve. Natural gas and oxidizing gas are mixed in a specific ratio, then pressurized by a pressure pump, and finally ejected from the lances 2. Ignition is achieved using an electric ignition device at the front end of the lance 2. The oxidizing gas is typically air, but can be replaced with oxygen as needed, with the gas mixing ratio adjusted accordingly.

[0027] The flame of the burner 2 is ejected upward to burn the glass raw material. The typical combustion temperature is between 1200 and 1500°C. The combustion temperature can be adjusted by regulating the amount of gas ejected and the number of burners 2 activated, so as to fully melt the glass raw material and reach the predetermined temperature for subsequent processing in the main melting furnace A2.

[0028] The pressure pump is used to change the flame height of the burner 2, usually controlling the fuel to be sprayed out below the glass liquid surface and burned directly in order to achieve better heating efficiency.

[0029] The top of the molten pool 1 is also equipped with a smoke exhaust channel 4, which is used to exhaust the smoke generated during combustion.

[0030] A discharge channel 5 is provided on the bottom or rear side wall of the discharge direction of the molten pool 1. The discharge channel 5 is a downward-sloping cylindrical structure, and its end is connected to the main melting furnace A2 so that the molten glass can flow naturally into the main melting furnace A2.

[0031] During the melting and output of glass raw materials, the screw feeder 3 continuously feeds glass raw materials into the molten pool 1 at a specific speed to maintain the liquid level height at approximately constant. This feeding speed is matched with the discharge speed of the molten pool 1.

[0032] In the above process, the controller is connected to each pre-melting unit A1 and controls the flame temperature of the lance 2 of each pre-melting unit A1, the feeding speed of the screw feeder 3, and whether each pre-melting unit A1 is activated and discharging material. This control process is based on a pre-programmed computer program.

[0033] The glass melt processing capacity of a single pre-melting unit A1 is designed to be (20~200) t / d. The main melting furnace A2 can be a conventional regenerative transverse flame melting furnace, a horseshoe flame glass melting furnace, or an oxygen-assisted combustion glass melting furnace.

[0034] Because the volume of a single pre-melting unit A1 is reduced, the molten glass is less affected by the flow field in the molten pool 1. The corners and sidewalls of the molten pool 1 can still be well heated through heat conduction, avoiding the problem of dead zones in the molten glass and improving the preheating stability of the molten glass.

[0035] Furthermore, when adjusting the lance 2, the controller can change the combustion temperature of each pre-melting unit A1 according to the position of the discharge channel of the pre-melting unit A1 pointing to the main melting furnace A2, thereby adjusting the temperature of the glass melt input to the main melting furnace A2, so as to form a specific temperature gradient in the main melting furnace A2 to affect the glass melt convection process.

[0036] In one embodiment, by controlling the unit temperature in the middle section of the melting furnace at 1450°C and the unit temperature on both sides at 1400°C, a temperature gradient can be generated in the molten glass entering the furnace. The higher temperature in the middle is beneficial to enhance the convection of the molten glass and improve the quality of the molten glass.

[0037] In another embodiment, for a relatively flat main melting furnace A2 arranged laterally, the pre-melting units A1 are grouped according to a certain length, and pre-melting units A1 with higher and lower temperatures are interspersed in each group. This changes the combustion temperature of each pre-melting unit A1, thereby adjusting the temperature of the molten glass input to the main melting furnace A2. This results in a temperature gradient of high-low-high-low for the molten glass input to the main melting furnace A2. The hot spots will have a strong convection tendency, and the bottom of the main melting furnace A2 will convect upwards and return to the lower-temperature molten glass on both sides. The lower-temperature molten glass on both sides will also be drawn from the bottom, forming a strong convection effect. This creates a grouped convection homogeneous effect in the main melting furnace A2, which has a relatively long lateral length, thus improving the temperature field characteristics of this type of melting furnace.

[0038] Furthermore, to achieve a better clarification effect, after the controller adjusts the temperature of the corresponding pre-melting unit A1, the composition of the clarifying agent mixed into the glass raw material is also adjusted accordingly. For example, the high-temperature unit uses cerium dioxide high-temperature clarifying agent, and the temperature can be controlled above 1450℃; the low-temperature unit uses sodium sulfate, and the temperature is controlled at around 1350℃; to ensure that the clarifying agent is not completely decomposed after the glass melt enters the furnace, and produces a clarification effect in the furnace.

[0039] In one embodiment, the molten pool 1 is a hollow elongated cube; The interior of molten pool 1 is lined with electrofused bricks; Multiple lances 2 are arranged in a lattice pattern at the bottom of the molten pool 1.

[0040] Specifically, in order to achieve better combustion effect, in this embodiment, a hollow rectangular melting pool 1 is set up, and the inside of the melting pool 1 is lined with electrofused bricks for heat insulation. At the same time, the glass melt processing capacity of a single pre-melting unit A1 is designed to be (20~200) t / d. Multiple pre-melting units A1 are connected in parallel to meet the processing requirements of the subsequent main melting furnace A2.

[0041] Meanwhile, since the molten glass in the molten pool 1 is an immersion combustion, the molten glass is prone to erosion of the electrofused bricks. By setting up a small number of pre-melting units A1, the electrofused bricks can be easily repaired and replaced by adjusting the connected pre-melting units A1, while production can be maintained through other pre-melting units A1.

[0042] The bottom of the molten pool 1 has multiple burners 2 arranged in a dotted pattern. Each burner 2 is connected to an external gas mixing pipeline, which consists of two parts: a natural gas pipeline and an oxidizing gas pipeline, each connected to a mixing valve. Natural gas and oxidizing gas are mixed in a specific ratio, then pressurized by a pressure pump, and finally ejected from the burners 2. Ignition is achieved using an electric ignition device at the front end of each burner 2. The oxidizing gas is usually air, but can be replaced with oxygen as needed, with the gas mixing ratio adjusted accordingly.

[0043] The flame of the burner 2 is ejected upward to burn the glass raw material. The typical combustion temperature is between 1200 and 1500°C. The combustion temperature can be adjusted by regulating the amount of gas ejected and the number of burners 2 activated, so as to fully melt the glass raw material and reach the predetermined temperature for subsequent processing in the main melting furnace A2.

[0044] The pressure pump is used to change the flame height of the burner 2, usually controlling the fuel to be sprayed out below the glass liquid surface and burned directly in order to achieve better heating efficiency.

[0045] In one embodiment, a screw feeder 3 is provided on the top or first side of the molten pool 1; The screw feeder 3 is located inside the molten glass pool 1, close to the surface of the molten glass.

[0046] Specifically, in order to achieve a better feeding effect, in this embodiment, a screw feeder 3 is provided on the side wall or the upper front of the molten pool 1 in the feeding direction, for feeding glass raw materials into the interior of the molten pool 1, including at least two parts: quartz sand and clarifying agent. Limestone and other materials may also be added as needed to adjust the composition of the glass melt.

[0047] During the melting and output of glass raw materials, the screw feeder 3 continuously feeds glass raw materials into the molten pool 1 at a specific speed to maintain the liquid level height at approximately constant. This feeding speed is matched with the discharge speed of the molten pool 1.

[0048] In one embodiment, a smoke exhaust channel 4 is provided at the top of the molten pool 1.

[0049] In one embodiment, a discharge channel 5 is provided at the bottom or on the second side of the molten pool 1; The unloading channel 5 is a cylindrical structure arranged at an angle downwards; The end of the unloading channel 5 is connected to the main melting furnace A2.

[0050] Specifically, in order to achieve a better unloading effect, in this embodiment, an unloading channel 5 is provided on the bottom or rear side wall of the discharge direction of the molten pool 1. The unloading channel 5 is a downward-sloping cylindrical structure, and its end is connected to the main melting furnace A2 so that the molten glass can flow naturally into the main melting furnace A2.

[0051] As needed, valves are also installed on the unloading channel 5, which are selectively opened or closed by a controller. During continuous production, the valves are usually open. The valves close when the controller confirms that the current pre-melting unit A1 does not need to be connected to the main melting furnace A2. Alternatively, the valves close when the pre-melting unit A1 has just started and the molten glass has not yet been heated to the predetermined temperature.

[0052] A method for feeding materials into a glass melting furnace, applicable to the aforementioned glass pre-melting system; like Figure 3 As shown, the glass melting furnace feeding method includes: Step S1: Receive production requirements and extract the current batch feed quantity from the production requirements; Step S2: Determine the number of pre-melting units by looking up the table according to the current batch feed quantity; Step S3: Select the corresponding pre-melting unit according to the number of pre-melting units along the axial direction of the main melting furnace; Step S4: Feed material using the selected pre-melting unit.

[0053] Specifically, after designing the glass pre-melting system described above, in this embodiment, uniform heating of the molten glass is achieved by adjusting the number of pre-melting units.

[0054] Specifically, for the production needs of the current batch, the material feed amount for the current batch can be obtained through field lookup, and the material feed amount for the current batch is matched with the stretching speed of the current batch. Subsequently, the number of pre-melting units can be easily determined by looking up a table based on the material feed amount for the current batch. The material feed adjustment range that a single pre-melting unit can achieve is fixed, and the corresponding number of pre-melting units is determined based on the material feed adjustment range and the material feed amount for the current batch.

[0055] After determining the number of pre-melting units to be activated, the controller selects the corresponding pre-melting units along the axis of the main melting furnace according to the number of pre-melting units. Usually, the pre-melting units are continuously allocated. If necessary, some pre-melting units that are under maintenance will be skipped, and the continuity of each pre-melting unit will be controlled as much as possible.

[0056] Finally, the selected pre-melting unit is used for feeding. The feeding process includes controlling the flame temperature of the burner 2 of each pre-melting unit A1, the feeding speed of the screw feeder 3, and whether each pre-melting unit A1 is activated and discharging material, all through a controller connected to each pre-melting unit A1. This control process is based on a pre-programmed computer program.

[0057] During the melting and output of glass raw materials, the screw feeder 3 continuously feeds glass raw materials into the molten pool 1 at a specific speed to maintain the liquid level height at approximately constant. This feeding speed is matched with the discharge speed of the molten pool 1.

[0058] Multiple lances 2 are distributed at the bottom of the molten pool 1. Each lance 2 is connected to an external gas mixing pipeline, which consists of two parts: a natural gas pipeline and an oxidizing gas pipeline, each connected to a mixing valve. Natural gas and oxidizing gas are mixed in a specific ratio, then pressurized by a pressure pump, and finally ejected from the lances 2. Ignition is achieved using an electric ignition device at the front end of the lance 2. The oxidizing gas is typically air, but can be replaced with oxygen as needed, with the gas mixing ratio adjusted accordingly.

[0059] The flame of the burner 2 is ejected upward to burn the glass raw material. The typical combustion temperature is between 1200 and 1500°C. The combustion temperature can be adjusted by regulating the amount of gas ejected and the number of burners 2 activated, so as to fully melt the glass raw material and reach the predetermined temperature for subsequent processing in the main melting furnace A2.

[0060] In one embodiment, such as Figure 4 As shown, the procedure following step S3 and before step S4 includes: Step A31: Match the corresponding temperature field template according to the number of pre-melted units; Step A32: Configure temperature parameters for each pre-melting unit according to the temperature field template to form a specific temperature gradient; In step S4, the glass raw material is melted by controlling the pre-melting unit based on temperature parameters.

[0061] Specifically, to achieve better homogenization of the molten glass, different temperature field templates are designed according to the number of pre-melting units in this embodiment. Once the number of pre-melting units is determined, the corresponding temperature field template can be found, and temperature parameters can be configured for each pre-melting unit according to the temperature field template to form a specific temperature gradient.

[0062] For example, in one embodiment, by controlling the unit temperature in the middle part of the melting furnace at 1450°C and the unit temperature on both sides at 1400°C, a temperature gradient can be generated in the molten glass entering the furnace. The higher temperature in the middle is beneficial to enhance the convection of the molten glass and improve the quality of the molten glass.

[0063] In another embodiment, for a relatively flat main melting furnace A2 arranged laterally, the pre-melting units A1 are grouped according to a certain length, and pre-melting units A1 with higher and lower temperatures are interspersed in each group. This changes the combustion temperature of each pre-melting unit A1, thereby adjusting the temperature of the molten glass input to the main melting furnace A2. This results in a temperature gradient of high-low-high-low for the molten glass input to the main melting furnace A2. The hot spots will have a strong convection tendency, and the bottom of the main melting furnace A2 will convect upwards and return to the lower-temperature molten glass on both sides. The lower-temperature molten glass on both sides will also be drawn from the bottom, forming a strong convection effect. This creates a grouped convection homogeneous effect in the main melting furnace A2, which has a relatively long lateral length, thus improving the temperature field characteristics of this type of melting furnace.

[0064] In one embodiment, such as Figure 5 As shown, the procedure following step A32 and before step S4 includes: Step A33: Determine the amount of clarifying agent to be added to the corresponding pre-melting unit according to the temperature parameters.

[0065] Specifically, considering that different types of clarifying agents may decompose at different temperatures, in this embodiment, after determining the temperature parameters, the clarifying agent added to the corresponding pre-melting unit is also determined according to the temperature parameters.

[0066] For example, the high-temperature unit uses cerium dioxide as a high-temperature clarifying agent, and the temperature can be controlled above 1450℃; the low-temperature unit uses sodium sulfate, and the temperature is controlled at around 1350℃; this ensures that the clarifying agent is not completely decomposed after the glass melt enters the furnace, and thus produces a clarifying effect inside the furnace.

[0067] Compared with the prior art, the present invention has the following advantages: High thermal efficiency: Immersion combustion enables direct contact heat transfer, with an estimated thermal efficiency exceeding 80%, far higher than traditional melting furnaces and close to the level of electric melting furnaces, which can significantly improve the thermal efficiency of melting furnaces. Significant energy saving and consumption reduction: High thermal efficiency combined with the cost advantage of natural gas results in lower operating costs than electric melting furnaces, achieving the optimal balance between efficiency and cost; High melting quality and fast speed: The pre-melted glass does not contain raw materials, and the main melting furnace only needs to complete the clarification and homogenization process of the glass, which significantly improves the glass quality; Modular layout with high scalability: By adjusting the number of units, it can be flexibly adapted to various sizes of melting furnaces, with controllable investment and flexible layout; It is easy to inspect and maintain; when maintenance is needed, it can be pulled out and a spare unit can be put in place in time. This structure can replace the feeding machine, avoiding the problem of dust flying from the feeding port; at the same time, this unit can be added to the existing structure to increase production and efficiency.

[0068] Enhanced protection for the main melting furnace: The pre-melting unit completes the melting of the batch material, preventing the raw materials from corroding the refractory materials of the main melting furnace, extending the furnace life and reducing maintenance costs.

[0069] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention. Those skilled in the art should recognize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present invention should be included within the protection scope of the present invention.

Claims

1. A submersible combustion glass pre-melting system, characterized in that, This includes multiple pre-melting units that are separately located at the inlet of the main melting furnace; The pre-melting unit includes a molten pool and a lance; Multiple lances are distributed at the bottom of the molten pool and positioned upwards to melt the glass raw material, allowing the glass raw material to undergo submerged combustion in the molten pool; The melting temperatures of the multiple pre-melting units are different, so that the molten glass entering the main melting furnace generates a lateral temperature gradient for convection homogenization.

2. The glass pre-melting system according to claim 1, characterized in that, The molten pool is in the shape of a hollow elongated cube; The interior of the molten pool is lined with electrofused bricks; Multiple lances are arranged in a lattice pattern at the bottom of the molten pool.

3. The glass pre-melting system according to claim 1, characterized in that, A screw feeder is provided on the top or first side of the molten pool; The screw feeder is positioned inside the molten pool near the surface of the molten glass.

4. The glass pre-melting system according to claim 1, characterized in that, A smoke exhaust channel is provided at the top of the molten pool.

5. The glass pre-melting system according to claim 1, characterized in that, The bottom or second side of the molten pool is provided with a discharge channel; The unloading channel has a downwardly inclined cylindrical structure; The end of the unloading channel is connected to the main melting furnace.

6. A method for feeding materials into a glass melting furnace, characterized in that, Applicable to the glass pre-melting system as described in any one of claims 1-5; The glass melting furnace feeding method includes: Step S1: Receive production requirements and extract the current batch feed quantity from the production requirements; Step S2: Determine the number of pre-melting units by looking up a table according to the current batch feed quantity; Step S3: Select the corresponding pre-melting unit along the axial direction of the main melting furnace according to the number of pre-melting units; Step S4: Feed material using the selected pre-melting unit.

7. The glass melting furnace feeding method according to claim 6, characterized in that, The procedure, which includes performing step S3 and performing step S4, further includes: Step A31: Match the corresponding temperature field template according to the number of pre-melting units; Step A32: Configure temperature parameters for each pre-melting unit according to the temperature field template to form a specific temperature gradient; In step S4, the pre-melting unit is controlled to melt the glass raw material based on the temperature parameter.

8. The glass melting furnace feeding method according to claim 7, characterized in that, The procedure further includes the following steps after step A32 and before step S4: Step A33: Determine the clarifying agent to be added to the pre-melting unit according to the temperature parameters.

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