Combustion control methods, systems, equipment and media for glass furnaces

Abstract

This application discloses a combustion control method, system, equipment, and medium for a glass furnace, belonging to the field of glass production and manufacturing technology. The glass furnace includes a regenerator and multiple smaller furnaces. The combustion control method for the glass furnace includes: determining the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of each smaller furnace, and the current temperature of the combustion air in each smaller furnace; determining the outlet mass ratio of the combustion air in each smaller furnace based on the furnace width coefficient and the current temperature of the combustion air; determining the target fuel quantity ratio for each smaller furnace based on the outlet mass ratio of the combustion air; and controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air. This application solves the problem of uneven distribution of combustion air and fuel during the operation of a glass furnace, which affects the glass melting quality and fuel utilization rate.

Description

Technical Field

[0001] This application relates to the field of glass production and manufacturing technology, and in particular to a combustion control method, system, equipment and medium for a glass furnace. Background Technology

[0002] During the operation of a glass furnace, the ratio of fuel to combustion air affects the final product. Currently, fuel distribution in glass furnaces is generally based on the ratio of combustion air to fuel in each individual furnace, and a "fuel-driven, air-following-fuel" control strategy is commonly adopted. Fuel allocation is based on experience, while combustion air is passively adjusted in conjunction with the fuel quantity in each individual furnace according to a fixed "air-fuel ratio" principle.

[0003] The distribution of combustion air and fuel during the operation of the glass furnace can lead to uneven flow and distribution of combustion air, which reduces the heat exchange efficiency of the heat storage chamber grid, resulting in uneven air preheating temperature. This, in turn, affects the overall thermal efficiency of the furnace, leading to incomplete combustion or an excess of air. Summary of the Invention

[0004] The main objective of this application is to provide a combustion control method, system, equipment, and medium for glass furnaces, aiming to solve the technical problem that uneven distribution of combustion air and fuel during the operation of glass furnaces affects the quality of glass melting and fuel utilization.

[0005] To achieve the above objectives, this application provides a combustion control method for a glass furnace, the glass furnace comprising a regenerator and multiple small furnaces connected to the regenerator, the method comprising: Determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace; The outlet mass ratio of the combustion air in each of the small furnaces is determined based on the furnace width coefficient and the current temperature of the combustion air. The target fuel quantity ratio for each of the small furnaces is determined based on the outlet mass ratio of the combustion air. The combustion process of the glass furnace is controlled based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air.

[0006] In one feasible embodiment, the outlet mass ratio of the combustion air is positively correlated with the furnace width coefficient; The proportion of the combustion air outlet mass is negatively correlated with the current temperature of the combustion air.

[0007] In one feasible embodiment, the step of determining the target fuel quantity ratio for each of the small furnaces based on the outlet mass ratio of the combustion air includes: Obtain the preset excess air coefficient of the glass furnace; The target fuel quantity ratio is determined based on the outlet mass ratio of the combustion air and the excess air coefficient, wherein the target fuel quantity ratio is positively correlated with the outlet mass ratio of the combustion air and negatively correlated with the excess air coefficient.

[0008] In a feasible embodiment, the preset excess air coefficient of each of the small furnaces gradually increases along the direction from the feeding end to the clarification end of the glass furnace, wherein the preset excess air coefficient of the first pair of small furnaces at the feeding end is 1.02 to 1.10, and the preset excess air coefficient of the last pair of small furnaces at the clarification end is 1.10 to 1.20.

[0009] In a feasible embodiment, the step of controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air includes: Obtain the current excess air coefficient for each of the aforementioned small furnaces; If the current excess air coefficient does not meet the range of the preset excess air coefficient, the total amount of combustion air is adjusted, wherein the outlet mass ratio of the combustion air of each of the small furnaces remains unchanged. Obtain the current temperature of the glass furnace; If the current temperature of the glass furnace does not meet the preset temperature range, the total amount of fuel and the total amount of combustion air are adjusted, wherein the target fuel quantity ratio and the combustion air outlet mass ratio of each small furnace remain unchanged.

[0010] In one feasible embodiment, the regenerator includes at least one grid body, and prior to the step of determining the outlet mass ratio of the combustion air in each of the small furnaces based on the furnace width coefficient of each of the small furnaces and the current temperature of the combustion air, the method further includes: Based on the structural and temperature parameters of the lattice of the regenerator, the inlet mass ratio of combustion air for each of the small furnaces is determined. The outlet mass ratio of combustion air is positively correlated with the inlet mass ratio of combustion air. The structural parameters of the lattice include the length of the lattice, and the temperature parameters include the average inlet and outlet temperatures of the lattice. The inlet mass ratio of combustion air is positively correlated with the length of the lattice, and negatively correlated with the average inlet and outlet temperatures of the lattice.

[0011] In one feasible embodiment, the furnace width coefficient is obtained by hydrodynamic simulation calculation of the glass furnace.

[0012] This application provides a combustion system for a glass furnace, the system comprising: The heat storage chamber is used to preheat the combustion air; A small furnace, connected to the heat storage chamber, is used to guide the combustion air; The control module is used to determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace; determine the outlet mass ratio of the combustion air in each small furnace based on the furnace width coefficient and the current temperature of the combustion air; determine the target fuel quantity ratio of each small furnace based on the outlet mass ratio of the combustion air; and control the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air.

[0013] This application provides a combustion control device for a glass furnace. The device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. The computer program is configured to implement the steps of the combustion control method for the glass furnace as described above.

[0014] This application provides a storage medium, which is a computer-readable storage medium, storing a computer program. When the computer program is executed by a processor, it implements the steps of the combustion control method for a glass furnace as described above.

[0015] This application provides a combustion control method for a glass furnace, which includes a regenerator and multiple smaller furnaces. The method includes: determining the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of each smaller furnace, and the current temperature of the combustion air in each smaller furnace, as the basis for subsequent determination of the distribution of combustion air and fuel; determining the outlet mass ratio of combustion air in each smaller furnace based on the furnace width coefficient and current temperature; considering the actual resistance of the smaller furnaces and the influence of temperature on airflow, making the distribution of combustion air more reasonable and stable, avoiding the use of constant pressure or fixed proportion distribution of combustion air in traditional glass furnaces, which does not consider the influence of differences in furnace structure and temperature changes on the actual flow rate of combustion air; determining the target fuel quantity ratio of each smaller furnace based on the outlet mass ratio of combustion air; and controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of combustion air, the total amount of fuel, and the total amount of combustion air, accurately determining the precise distribution of fuel and combustion air, and effectively improving the thermal efficiency of the regenerator and the combustion efficiency. The embodiments of this application optimize the distribution of combustion air and fuel during the operation of the glass furnace, thereby effectively improving the glass melting quality and fuel utilization rate. Attached Figure Description

[0016] Figure 1 This is a schematic flowchart of the combustion control method for a glass furnace involved in the embodiments of this application; Figure 2 This is a schematic diagram of the glass furnace involved in the embodiments of this application; Figure 3 This is a schematic diagram of the combustion control system of the glass furnace involved in the embodiments of this application; Figure 4 This is a simulation diagram of the glass furnace involved in the embodiments of this application; Figure 5 This is a schematic diagram of the combustion control equipment for a glass furnace involved in the embodiments of this application.

[0017] Explanation of icon numbers: 1. Glass furnace; 10. Regenerator; 101. Lattice structure; 20. Small furnace; 201. Small furnace No. 1; 202. Small furnace No. 2; 203. Small furnace No. 3; 204. Small furnace No. 4; 205. Small furnace No. 5; 206. Small furnace No. 6; 207. Small furnace No. 7; 208. Small furnace No. 8; 209. Small furnace No. 9; 30. Control module.

[0018] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below. Where specific conditions are not specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments whose manufacturers are not specified are all conventional products that can be purchased commercially.

[0020] Furthermore, the meaning of "and / or" throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that simultaneously satisfies A and B. In addition, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this application.

[0021] Currently, fuel distribution in glass furnaces is generally based on the ratio of combustion air to fuel in each individual furnace, typically employing a "fuel-driven, air-following-fuel" control strategy. Fuel allocation is based on experience, while combustion air is passively adjusted in conjunction with the fuel quantity in each individual furnace according to a fixed "air-fuel ratio" principle. This distribution of combustion air and fuel during glass furnace operation leads to uneven flow and distribution of combustion air, reducing the heat exchange efficiency of the regenerator's grid, resulting in uneven air preheating temperature, and consequently affecting the overall thermal efficiency of the furnace, causing incomplete combustion or an excess of air.

[0022] This application discloses a combustion control method for a glass furnace, which includes a regenerator and multiple smaller furnaces. The method includes: determining the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of each smaller furnace, and the current temperature of the combustion air in each smaller furnace, as the basis for subsequent determination of the distribution of combustion air and fuel; determining the outlet mass ratio of combustion air in each smaller furnace based on the furnace width coefficient and the current temperature of the combustion air; considering the actual resistance of the smaller furnaces and the influence of temperature on airflow, making the distribution of combustion air more reasonable and stable, avoiding the use of constant pressure or fixed proportion for combustion air distribution in traditional glass furnaces, which does not consider the influence of differences in furnace structure and temperature changes on the actual flow rate of combustion air; determining the target fuel quantity ratio for each smaller furnace based on the outlet mass ratio of the combustion air; and controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air, accurately determining the precise distribution of fuel and combustion air, and effectively improving the thermal efficiency of the regenerator and the combustion efficiency. The embodiments of this application optimize the distribution of combustion air and fuel during the operation of the glass furnace, thereby effectively improving the glass melting quality and fuel utilization rate.

[0023] It should be noted that the executing entity in this embodiment can be a computing service device with data processing, network communication, and program execution functions, such as a tablet computer or personal computer, or an electronic device capable of performing the above functions, such as a combustion control device for a glass furnace. The following description uses a combustion control device for a glass furnace as an example to illustrate this embodiment and the subsequent embodiments.

[0024] The first aspect of this application provides a combustion control method for a glass furnace. The glass furnace includes a regenerator and multiple smaller furnaces connected to the regenerator. (Refer to...) Figure 1 The methods include: Step S10: Determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace. In one feasible embodiment, the total amount of combustion air in the regenerator is the baseline air volume for the entire combustion process. Accurately obtaining this value helps in subsequent calculations of air distribution to each individual furnace. The total fuel volume and the total combustion air volume need to be matched to achieve optimal combustion performance. The furnace width coefficient of each individual furnace reflects the degree to which it obstructs the flow of combustion air; the furnace width coefficient varies between different furnaces due to factors such as structure and wear. The current temperature affects the physical properties of air, such as density and viscosity, thus influencing airflow characteristics. Therefore, these three parameters are the basis for subsequent accurate calculations of combustion air and fuel distribution.

[0025] Optionally, the main function of the heat storage chamber is to store heat during the operation of the glass furnace. When the combustion air passes through the heat storage chamber, the heat storage chamber transfers the stored heat to the combustion air, preheating the combustion air and thus improving the combustion efficiency.

[0026] Optionally, the small furnace is connected to the regenerator, serving as a conduit for combustion air and fuel to enter the combustion chamber of the glass furnace. The combustion air, preheated in the regenerator, enters the furnace through the small furnace, while fuel is also injected into the furnace via the small furnace, where combustion takes place.

[0027] Optionally, combustion air in the regenerator is a necessary condition for fuel combustion, and an appropriate total amount of air can ensure that the fuel burns completely in each small furnace. If the total amount of combustion air is insufficient, the fuel will burn incompletely due to lack of oxygen, producing harmful gases such as carbon monoxide, and reducing the melting quality of the glass; if the total amount of combustion air is too much, it will carry away a large amount of heat, reducing the thermal efficiency of the glass furnace.

[0028] Optionally, the furnace width coefficient is related to the furnace's structural design, such as its width, and affects the flow characteristics of combustion air within the furnace. The furnace width coefficient reflects the degree to which the furnace obstructs the flow of combustion air.

[0029] Optionally, the current temperature of the combustion air in the furnace refers to the temperature of the combustion air after preheating. The temperature of the furnace affects the physical properties of the combustion air, such as its density and volume. For example, at high temperatures, the volume of the combustion air expands and its density decreases. Accurately obtaining the current temperature of the furnace is crucial for the subsequent precise calculation of the outlet quality of the combustion air.

[0030] In one feasible implementation, the furnace width coefficient is obtained through hydrodynamic simulation calculations of the glass furnace.

[0031] In one feasible embodiment, Computational Fluid Dynamics (CFD) is a technique that studies fluid flow phenomena through computer numerical simulation. Based on the fundamental equations of fluid mechanics (such as the continuity equation, momentum equation, and energy equation), the space containing the fluid is discretized into many small grid cells. These equations are then solved using numerical algorithms to obtain the distribution of physical quantities such as velocity, pressure, and temperature of the fluid at different locations and times. In the fluid dynamics simulation calculation of a glass furnace, CFD software is used to build a three-dimensional model of the glass furnace, setting the inlet and outlet mass (temperature, etc.) and fluid physical properties (such as density and viscosity) of the furnace. Then, numerical simulation calculations are performed to predict the flow state of the combustion air inside the furnace.

[0032] Step S20: Determine the outlet mass ratio of the combustion air in each small furnace based on the furnace width coefficient and the current temperature of the combustion air. In one feasible embodiment, due to the different furnace width coefficients of the different furnaces, the flow rate of combustion air through each furnace will vary under the same pressure. Simultaneously, temperature changes alter the airflow pattern. By considering both factors, the actual combustion air outlet quality that each furnace can obtain can be calculated more accurately, achieving a rational distribution of combustion air among the furnaces.

[0033] Optionally, the outlet quality of combustion air refers to the flow rate of combustion air that flows from the small furnace into the combustion chamber of the glass furnace to participate in combustion per unit time. The size of the outlet quality of combustion air directly affects the combustion effect of fuel and the thermal efficiency of the glass furnace.

[0034] Optionally, the outlet mass ratio of combustion air refers to the flow distribution ratio of combustion air in each small furnace when it is output into the kiln. The total amount of combustion air is distributed in each small furnace according to this ratio.

[0035] In one feasible implementation, the proportion of combustion air outlet mass is positively correlated with the furnace width coefficient; The proportion of combustion air outlet mass is negatively correlated with the current temperature of the combustion air.

[0036] In one feasible embodiment, the proportion of combustion air outlet mass is positively correlated with the furnace width coefficient, meaning that the larger the physical width of the furnace, the higher the proportion of air mass flow rate it can obtain. This is mainly based on the direct relationship between flow area and flow rate in fluid dynamics and the requirements of flame coverage. Wide furnaces require more air to form a flame sufficient to cover the glass liquid surface of the corresponding width.

[0037] In one feasible embodiment, the outlet mass ratio of the combustion air is negatively correlated with the current temperature of the combustion air because the air expands in volume and decreases in density after being heated. In order to maintain the stability of the flame's jet speed, momentum, and shape, and to prevent the flame from becoming too large due to excessive volume flow rate, when the temperature of the air entering the small furnace rises, the mass ratio of the air allocated to the small furnace must be appropriately reduced to offset the surge in volume flow rate caused by thermal expansion and contraction.

[0038] For example, the actual flow rate Q of the combustion air entering the kiln through the i-th small furnace. air_actual_i The furnace width coefficient K formed by the furnace width 1_i Positively correlated with the preheated air temperature K 2_i Negative correlation. Expressed using the following formula: Q air_actual_i ∝K 1_i / K 2_i In one feasible embodiment, the outlet quality of the combustion air is independent of the inlet quality of the combustion air in the small furnace. Specifically, while keeping the total amount of combustion air constant, and keeping the fuel quantity of a particular small furnace constant, reducing the combustion air quantity of the corresponding small furnace to 0, or increasing the combustion air quantity by 50%, the residual oxygen and pollutant content in the flue gas measured after combustion remains essentially unchanged. Therefore, the outlet quality and distribution ratio of the combustion air in each small furnace are directly related to the furnace's structure.

[0039] Step S30: Determine the target fuel quantity ratio for each small furnace based on the outlet mass ratio of the combustion air. In one feasible embodiment, the target fuel quantity ratio required for each small furnace is determined based on the outlet mass ratio of combustion air in each small furnace, according to stoichiometry or actual combustion experience. For example, if the outlet mass ratio of combustion air in a certain small furnace is relatively large, then the required fuel quantity ratio for that small furnace should also be increased accordingly to ensure that the fuel can be fully burned and improve combustion efficiency.

[0040] In one feasible implementation, step S30, which determines the target fuel quantity ratio for each small furnace based on the outlet mass ratio of combustion air, includes: Step S310: Obtain the preset excess air coefficient for each small furnace; In one feasible embodiment, during the design and operation of a glass furnace, due to the complexity of the actual combustion situation, in order to ensure that the fuel can burn completely and avoid the generation of harmful gases such as carbon monoxide due to incomplete combustion caused by insufficient air, the preset air process coefficient of each small furnace is usually determined comprehensively based on factors such as the type of glass furnace, fuel characteristics, and combustion process. This coefficient is generally stored in the furnace's control system and can be directly retrieved when needed.

[0041] Optionally, the excess air coefficient refers to the ratio of the actual amount of combustion air supplied to the amount of air theoretically required for complete combustion, reflecting the degree of surplus of combustion air supply relative to the amount of air required for complete combustion of fuel.

[0042] Optionally, in the combustion control of glass furnaces, different fuels and combustion conditions require different excess air coefficients to ensure complete combustion of fuels, while avoiding excessive air carrying away heat and causing energy waste.

[0043] Step S320: Determine the target fuel quantity ratio based on the outlet mass ratio of combustion air and the preset excess air coefficient. The target fuel quantity ratio is positively correlated with the outlet mass ratio of combustion air and negatively correlated with the preset excess air coefficient.

[0044] Optionally, to ensure complete combustion of fuel in each small furnace, a suitable ratio of fuel to combustion air needs to be maintained. If the mass ratio of combustion air at the outlet of a certain small furnace is relatively large, it means that there is more combustion air available for fuel combustion in that small furnace. In order to make full use of this combustion air, the target fuel quantity ratio required for that small furnace should also be increased accordingly.

[0045] Optionally, when a small furnace has a high preset excess air coefficient, it means that an oxidizing atmosphere needs to be created in that combustion zone, i.e., an excess air supply far exceeding the theoretical requirement is needed. Given a fixed air mass flow rate, to achieve this excess air state, the fuel input of the small furnace must be limited to ensure that the actual air-fuel ratio is higher than the theoretical value. Conversely, when a small furnace has a low preset excess air coefficient, it means that a reducing atmosphere or stoichiometric air combustion is required in that zone. Under the same air mass flow rate, a larger amount of fuel can be allocated to achieve oxygen-deficient or stoichiometric combustion.

[0046] For example, the target fuel quantity ratio Q of the i-th small furnace fuel_set_i =Q air_actual_i / O coef_i .

[0047] Among them, Q air_actual_i The actual combustion air flow rate of the i-th small furnace, O coef_i is the preset excess air coefficient for the i-th small furnace.

[0048] This embodiment determines the target fuel ratio for each small furnace by obtaining a preset excess air coefficient and combining it with the outlet mass ratio of combustion air. This enables the fuel and combustion air in each small furnace of the glass furnace to achieve a reasonable match, thereby improving combustion efficiency, reducing energy waste and pollutant emissions, and ensuring the stable operation of the glass furnace and the quality of glass products.

[0049] In one feasible implementation, the excess air coefficient of each small furnace gradually increases from the feeding end to the clarification end of the glass furnace, wherein the preset excess air coefficient of the first pair of small furnaces at the feeding end is 1.02 to 1.10, and the preset excess air coefficient of the last pair of small furnaces at the clarification end is 1.10 to 1.20.

[0050] Optionally, the preset excess air coefficient of the first pair of small furnaces at the feeding end can be 1.02, 1.03, 1.04, 1.05, 1.06, 1.07, 1.08, 1.09, 1.10, etc.

[0051] Optionally, the preset excess air coefficient of the final pair of small furnaces at the clarification end can be 1.10, 1.11, 1.12, 1.13, 1.14, 1.15, 1.16, 1.17, 1.18, 1.19, 1.20, etc.

[0052] Optionally, the increment of the preset excess air coefficient between adjacent small furnaces is 0.005 to 0.030.

[0053] In one feasible embodiment, multiple small furnaces are distributed in the glass furnace from the feeding end to the refining end. The excess air coefficient of the small furnaces near the feeding end is relatively small, while the excess air coefficient of each small furnace gradually increases as it moves towards the refining end.

[0054] Optionally, at the feeding end, the glass raw materials need to be rapidly heated and melted as soon as they enter the furnace. At this time, a relatively low excess air coefficient allows the fuel to burn in a relatively fuel-rich environment, generating a higher flame temperature, which is beneficial for the rapid melting of the glass raw materials. This is because the combustion reaction is more intense under fuel-rich conditions, rapidly releasing a large amount of heat to meet the melting requirements of the raw materials.

[0055] Optionally, as the molten glass moves towards the clarifying end, air bubbles in the molten glass need to be expelled to achieve clarification. Increasing the excess air coefficient allows for more complete combustion and enhances the oxidizing power of the flame. A stronger oxidizing flame helps oxidize some reducing gases (such as carbon monoxide) in the molten glass, reducing bubble formation and facilitating bubble expulsion, thereby improving the clarification effect of the molten glass. Furthermore, sufficient air ensures complete fuel combustion, improving energy efficiency and reducing pollutant emissions.

[0056] This embodiment improves the utilization rate of fuel in glass furnaces by setting the relationship between the excess air coefficients of each small furnace.

[0057] Step S40: Control the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of combustion air, the total amount of fuel, and the total amount of combustion air.

[0058] In one feasible embodiment, the combustion process in the glass furnace is precisely controlled by comprehensively considering four key factors: the target fuel quantity ratio, the combustion air outlet quality ratio, the total fuel quantity, and the total combustion air quantity. Specific control methods include adjusting fuel supply equipment (such as fuel valves) and combustion air delivery equipment (such as fans and duct valves). Based on the target fuel quantity ratio and combustion air outlet quality ratio of each small furnace, the fuel supply and combustion air supply of each small furnace are adjusted separately to ensure that the fuel and combustion air in each small furnace can mix and burn in the expected proportions, thereby achieving efficient and stable combustion throughout the entire glass furnace.

[0059] In one feasible implementation, step S40, which controls the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air, includes: Step S410: Obtain the current excess air coefficient of each small furnace; In one feasible embodiment, the actual excess air coefficient of a glass furnace may change during operation due to various factors (such as changes in fuel properties and fluctuations in equipment operating conditions). By obtaining the current excess air coefficient, the combustion status of the furnace can be understood in real time, providing a basis for subsequent adjustments.

[0060] Step S420: If the current excess air coefficient does not meet the preset excess air coefficient range, adjust the total amount of combustion air, wherein the outlet mass ratio of combustion air for each small furnace remains unchanged. In one feasible embodiment, when the current excess air coefficient does not meet the preset range, it indicates that the combustion air supply in the glass furnace is unreasonable, potentially leading to incomplete fuel combustion or energy waste. Only the total amount of combustion air is adjusted, while maintaining the mass ratio of combustion air outlets in each individual furnace. This ensures a relatively balanced combustion state among the furnaces and avoids affecting the combustion performance of other furnaces by adjusting the combustion air quantity in one furnace. For example, if the current excess air coefficient is less than the preset value, it indicates that the actual supply of combustion air is insufficient, requiring an increase in the total amount of combustion air; conversely, if the current excess air coefficient is greater than the preset value, the total amount of combustion air needs to be reduced.

[0061] Step S430: Obtain the current temperature of the glass furnace; Step S440: If the current temperature of the glass furnace does not meet the preset temperature range, adjust the total amount of fuel and the total amount of combustion air, wherein the target fuel quantity ratio and the combustion air outlet quality ratio of each small furnace remain unchanged.

[0062] In one feasible embodiment, the temperature within the glass furnace plays a crucial role in the melting and forming processes of glass. The preset temperature range is the optimal temperature range determined based on the requirements of the glass production process. If the current temperature does not meet the preset temperature range, it will affect the quality of the glass and production efficiency. Simultaneously, the total amount of fuel and combustion air is adjusted, while maintaining a constant target fuel ratio and combustion air outlet mass ratio for each furnace. This is because the ratio of fuel to combustion air directly affects the heat release and temperature of combustion; maintaining a constant ratio ensures that the combustion state of each furnace remains relatively stable during the adjustment of the total amounts. For example, if the current temperature is lower than the preset temperature, it indicates insufficient heat release from combustion, requiring an increase in both the total amount of fuel and combustion air; conversely, if the current temperature is higher than the preset temperature, requiring a decrease in both the total amount of fuel and combustion air.

[0063] This embodiment achieves dynamic control of the glass furnace combustion process by real-time monitoring of the excess air coefficient and temperature, and adjusting the total amount of fuel and combustion air based on the monitoring results, while maintaining the proportional relationship of each small furnace. This ensures that the furnace can operate stably and efficiently under various operating conditions, guaranteeing the quality and efficiency of glass production.

[0064] This embodiment provides a combustion control method for a glass furnace, which includes a regenerator and multiple smaller furnaces. The method includes: determining the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of each smaller furnace, and the current temperature of the combustion air in each smaller furnace, as the basis for subsequent determination of the distribution of combustion air and fuel; determining the outlet mass ratio of combustion air in each smaller furnace based on the furnace width coefficient and current temperature; considering the actual resistance of the smaller furnaces and the influence of temperature on airflow, making the distribution of combustion air more reasonable and stable, avoiding the use of constant pressure or fixed proportion for combustion air distribution in traditional glass furnaces, which does not consider the influence of differences in furnace structure and temperature changes on the actual flow rate of combustion air; determining the target fuel quantity ratio for each smaller furnace based on the outlet mass ratio of combustion air; and controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of combustion air, the total amount of fuel, and the total amount of combustion air, accurately determining the precise distribution of fuel and combustion air, and effectively improving the thermal efficiency of the regenerator and the combustion efficiency. The embodiments of this application optimize the distribution of combustion air and fuel during the operation of the glass furnace, thereby effectively improving the glass melting quality and fuel utilization rate.

[0065] The combustion control method for a glass furnace provided in the second aspect of this embodiment, wherein the regenerator chamber includes at least one grid body, and prior to the step of determining the outlet mass ratio of the combustion air in the small furnace based on the furnace width coefficient and the current temperature of the combustion air, further includes: Based on the structural and temperature parameters of the regenerator's lattice, the inlet mass ratio of combustion air for each small furnace is determined. The outlet mass ratio of combustion air is positively correlated with the inlet mass ratio. The structural parameters of the lattice include its length, and the temperature parameters include the average inlet and outlet temperatures of the lattice. The inlet mass ratio of combustion air is positively correlated with the length of the lattice, and negatively correlated with the average inlet and outlet temperatures of the lattice.

[0066] In one feasible embodiment, before determining the outlet quality of the combustion air in the small furnace, the inlet quality ratio of the combustion air in each small furnace is first determined, and the determination of this ratio depends on the structural parameters and temperature parameters of the regenerator lattice.

[0067] Optionally, the regenerator contains at least one lattice, which is typically made of refractory material and has a special structure. Its function is to absorb heat during combustion and release the heat to the combustion air in a later stage, thereby improving energy utilization efficiency.

[0068] Optionally, structural parameters include the length of the lattice, which affects the flow resistance and distribution of combustion air within the lattice.

[0069] Optionally, the higher the inlet mass ratio of combustion air, the greater the total mass flow rate of air entering the small furnace, and the greater the mass flow rate of air injected into the kiln from the outlet of the small furnace. Therefore, the outlet mass ratio of combustion air is positively correlated with the inlet mass ratio.

[0070] Optionally, the inlet mass ratio of combustion air is positively correlated with the length of the grid, meaning that the longer the grid, the greater the inlet mass ratio of combustion air allocated to the corresponding furnace. This is because longer grids typically have greater heat storage capacity and heat transfer area, enabling them to heat the combustion air better. To fully utilize these advantages, more combustion air needs to be allocated.

[0071] Optionally, the temperature parameters include the average inlet and outlet temperatures of the lattice. The average inlet and outlet temperatures reflect the thermal state of the lattice at a certain moment and have a direct impact on the heating effect of the combustion air as it passes through the lattice.

[0072] Optionally, the inlet mass ratio of combustion air is negatively correlated with the average inlet and outlet temperatures of the lattice. When the average inlet and outlet temperatures of a particular lattice increase, the overall temperature of the internal gas rises, leading to increased gas viscosity and decreased density. Increased gas viscosity exacerbates the flow resistance as the airflow passes through the lattice channels. When the total inlet pressure of each regenerator is essentially the same, the greater the flow resistance of a particular branch, the smaller the mass flow rate through that branch. Conversely, branches with lower temperatures achieve a higher inlet mass ratio due to relatively lower flow resistance.

[0073] For example, the mass ratio of combustion air inlet Q for the i-th small furnace set_i The calculation formula is: Q set_i =L i / T coef_i Among them, L i T is the length of the regenerator lattice corresponding to the i-th small furnace. coef_i The average temperature (in K) of the combustion air before and after preheating of the i-th furnace.

[0074] For example, refer to Figure 2The glass furnace has nine small furnaces on one side, connected to the grid structure of the regenerator. The regenerators on both sides exchange heat between the exhaust gas and the combustion air according to the furnace's operating conditions.

[0075] This embodiment determines the inlet mass ratio of combustion air for each small furnace based on the length of the regenerator grid and the average inlet and outlet temperatures. This allows for a more rational allocation of combustion air, fully utilizing the heat storage and transfer capacity of the grid, improving the energy efficiency and combustion effect of the entire system, and providing important basic data for subsequently determining the outlet mass of combustion air in the small furnaces. This application also provides a combustion system for a glass furnace, please refer to... Figure 3 The system includes: Heat storage chamber 10 is used to preheat combustion air; Small furnace 20, connected to the regenerator, is used to guide combustion air; The control module 30 is used to determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace 1, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace; based on the furnace width coefficient and the current temperature of the combustion air in each small furnace, it determines the outlet mass ratio of the combustion air in each small furnace; based on the outlet mass ratio of the combustion air, it determines the target fuel quantity ratio of each small furnace; and based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air, it controls the combustion process of the glass furnace.

[0076] The combustion control system for glass furnaces provided in this application, employing the combustion control method for glass furnaces described in the above embodiments, can solve the technical problem of uneven distribution of combustion air and fuel during the operation of existing glass furnaces, which affects the quality of glass melting and fuel utilization. Compared with the prior art, the beneficial effects of the combustion control system for glass furnaces provided in this application are the same as those of the combustion control method for glass furnaces provided in the above embodiments, and other technical features in the combustion control system for glass furnaces are the same as those disclosed in the methods of the above embodiments, and will not be repeated here.

[0077] In one feasible embodiment, refer to Figure 4The glass furnace has nine pairs of small furnaces on both sides, connected to the grid structure of the regenerator. The lower regenerator contains combustion air. When the vertically flowing air in the grid transitions to horizontal flow, due to the sharp turn, it's difficult for all the air to flow out from the nearest furnace; some tends to flow towards nearby furnaces. The small furnaces connected to the lower regenerator from left to right are: Furnace 1 (201), Furnace 202, Furnace 3 (203), Furnace 4 (204), Furnace 5 (205), Furnace 6 (206), Furnace 7 (207), Furnace 8 (208), and Furnace 9 (209). Furnaces 1 and 2 are connected to one grid structure (101), Furnaces 3 and 4 are connected to another grid structure, Furnaces 5 and 6 are connected to another grid structure, Furnaces 7 and 8 are connected to another grid structure, and Furnace 9 is connected to another grid structure. The upper regenerator contains flue gas. The small furnaces represent the primary resistance to the flow of flue gas and combustion air. The streamlines represent the mass flow distribution. The flue gas flowing in the upper small furnace is the post-combustion flue gas; due to the increased temperature and added fuel mass, its velocity is greater, hence its yellow color. Taking a 1200-ton / day glass melting furnace (9 pairs of small furnaces) as an example, based on the length of the grid in the corresponding regenerator of each small furnace and the average temperature of the grid inlet and outlet (before and after preheating the combustion air), the inlet mass and inlet mass ratio of the combustion air are calculated, as shown in Table 1. The 500x ratio is a value magnified 500 times for easier processing by the glass furnace's combustion control system.

[0078] Table 1. Inlet mass ratio of combustion air for each small furnace in a glass furnace.

[0079]

[0080] Based on fluid simulation calculations, the width coefficient of the small furnace is obtained, and the current temperature of the combustion air near the small furnace is measured on-site. The actual flow distribution ratio can be calculated, as shown in Table 2. The 500x ratio is a value that is magnified by 500x to facilitate the processing of the combustion control system of the glass kiln.

[0081] Table 2. Outlet quality ratio of combustion air in each small furnace of the glass furnace.

[0082]

[0083] The excess air coefficient of the glass furnace is gradually increased, and the target fuel quantity ratio of each small furnace is calculated, as shown in Table 3.

[0084] Table 3. Target fuel quantity ratio of each small furnace in the glass furnace.

[0085]

[0086] The calculated inlet and outlet mass ratios of combustion air for each small furnace, as well as the target fuel quantity ratio, are set in the combustion control system of the glass furnace. Based on the process requirements of the average residual oxygen content and average temperature of the glass furnace, the fuel and air volume of each small furnace are adjusted synchronously but independently according to the ratios calculated in Table 3. If the process indicates that the average residual oxygen content is too high, the fuel quantity at each location is kept constant, and the total amount of combustion air is gradually reduced while maintaining the air distribution ratio. When the average temperature inside the furnace is too low and an increase of 0.5% in energy is required, the total fuel quantity and the total amount of combustion air are increased by 0.5% simultaneously according to the calculated ratios.

[0087] This application provides a combustion control device for a glass furnace. The combustion control device for the glass furnace includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions that can be executed by the at least one processor, and the instructions are executed by the at least one processor to enable the at least one processor to perform the combustion control method for the glass furnace in the above embodiment 1.

[0088] The following is for reference. Figure 5 The diagram illustrates a structural schematic of a combustion control device suitable for implementing the embodiments of this application for a glass furnace. The combustion control device for the glass furnace in the embodiments of this application may include, but is not limited to, mobile terminals such as mobile phones, laptops, digital radio receivers, PDAs (Personal Digital Assistants), PADs (Portable Application Description), PMPs (Portable Media Players), vehicle terminals (e.g., vehicle navigation terminals), and fixed terminals such as digital TVs and desktop computers. Figure 5 The combustion control device for the glass furnace shown is merely an example and should not impose any limitations on the functionality and scope of use of the embodiments of this application.

[0089] like Figure 5As shown, the combustion control equipment for a glass furnace may include a processing unit 1001 (e.g., a central processing unit, a graphics processing unit, etc.), which can perform various appropriate actions and processes according to a program stored in a read-only memory 1002 or a program loaded from a storage device 1003 into a random access memory 1004. The random access memory 1004 also stores various programs and data required for the operation of the combustion control equipment for the glass furnace. The processing unit 1001, the read-only memory 1002, and the random access memory 1004 are interconnected via a bus 1005. An input / output interface 1006 is also connected to the bus. Typically, the following systems can be connected to the input / output interface 1006: input devices 1007 including, for example, a touchscreen, touchpad, keyboard, mouse, image sensor, microphone, accelerometer, gyroscope, etc.; output devices 1008 including, for example, a liquid crystal display (LCD), speaker, vibrator, etc.; storage devices 1003 including, for example, magnetic tape, hard disk, etc.; and communication devices 1009. Communication device 1009 allows the combustion control equipment of the glass furnace to communicate wirelessly or wiredly with other equipment to exchange data. Although the figure shows combustion control equipment for a glass furnace with various systems, it should be understood that implementation or possession of all the systems shown is not required. More or fewer systems may be implemented alternatively.

[0090] Specifically, according to the embodiments disclosed in this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments disclosed in this application include a computer program product comprising a computer program carried on a computer-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via a communication device, or installed from storage device 1003, or installed from read-only memory 1002. When the computer program is executed by processing device 1001, it performs the functions defined in the methods of the embodiments disclosed in this application.

[0091] The combustion control device for glass furnaces provided in this application, employing the combustion control method for glass furnaces described in the above embodiments, can solve the technical problem of uneven distribution of combustion air and fuel during the operation of glass furnaces, which affects the quality of glass melting and fuel utilization. Compared with the prior art, the beneficial effects of the combustion control device for glass furnaces provided in this application are the same as those of the combustion control method for glass furnaces provided in the above embodiments, and other technical features in the combustion control of this glass furnace are the same as those disclosed in the previous embodiment method, and will not be repeated here.

[0092] It should be understood that the various parts disclosed in this application can be implemented using hardware, software, firmware, or a combination thereof. In the description of the above embodiments, specific features, structures, materials, or characteristics can be combined in any suitable manner in one or more embodiments or examples.

[0093] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

[0094] This application provides a computer-readable storage medium having computer-readable program instructions (i.e., a computer program) stored thereon, the computer-readable program instructions being used to execute the combustion control method for the glass furnace in the above embodiments.

[0095] The computer-readable storage medium provided in this application may be, for example, a USB flash drive, but is not limited to, electrical, magnetic, optical, electromagnetic, infrared, or semiconductor systems or devices, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to: electrical connections having one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof. In this embodiment, the computer-readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system or device. The program code contained on the computer-readable storage medium may be transmitted using any suitable medium, including but not limited to: wires, optical cables, RF (Radio Frequency), etc., or any suitable combination thereof.

[0096] The aforementioned computer-readable storage medium may be included in the combustion control equipment of the glass furnace; or it may exist independently and not be assembled into the combustion control equipment of the glass furnace.

[0097] The aforementioned computer-readable storage medium carries one or more programs that, when executed by the combustion control equipment of the glass furnace, cause the combustion control equipment of the glass furnace to: determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of each furnace, and the current temperature; determine the outlet mass ratio of combustion air in each furnace based on the furnace width coefficient and the current temperature; determine the target fuel quantity ratio of each furnace based on the outlet mass ratio of combustion air; and control the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of combustion air, the total amount of fuel, and the total amount of combustion air.

[0098] Computer program code for performing the operations of this application can be written in one or more programming languages ​​or a combination thereof, including object-oriented programming languages ​​such as Java, Smalltalk, and C++, and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The program code can be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving remote computers, the remote computer can be connected to the user's computer via any type of network—including a Local Area Network (LAN) or a Wide Area Network (WAN)—or can be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0099] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. It should also be noted that in some alternative implementations, the functions indicated in the blocks may occur in a different order than those indicated in the drawings. For example, two consecutively indicated blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or operation, or using a combination of dedicated hardware and computer instructions.

[0100] The modules described in the embodiments of this application can be implemented in software or hardware. The names of the modules do not necessarily limit the functionality of the unit itself.

[0101] The readable storage medium provided in this application is a computer-readable storage medium that stores computer-readable program instructions (i.e., a computer program) for executing the combustion control method of the glass furnace described above. This solves the technical problem of uneven distribution of combustion air and fuel during the operation of the glass furnace, which affects the quality of glass melting and fuel utilization. Compared with the prior art, the beneficial effects of the computer-readable storage medium provided in this application are the same as those of the combustion control method of the glass furnace provided in the above embodiments, and will not be repeated here.

[0102] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the steps of the combustion control method for a glass furnace as described above.

[0103] The computer program product provided in this application can solve the technical problem of combustion control in glass furnaces. Compared with the prior art, the beneficial effects of the computer program product provided in this application are the same as the beneficial effects of the combustion control method for glass furnaces provided in the above embodiments, and will not be repeated here.

[0104] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the patent protection scope of this application.

Claims

1. A combustion control method for a glass furnace, characterized in that, The glass furnace includes a regenerator and multiple smaller furnaces, the smaller furnaces being connected to the regenerator. The method includes: Determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace; The outlet mass ratio of the combustion air in each of the small furnaces is determined based on the furnace width coefficient and the current temperature of the combustion air. The target fuel quantity ratio for each of the small furnaces is determined based on the outlet mass ratio of the combustion air. The combustion process of the glass furnace is controlled based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air.

2. The combustion control method for a glass furnace as described in claim 1, characterized in that, The proportion of combustion air outlet mass is positively correlated with the furnace width coefficient; The proportion of the combustion air outlet mass is negatively correlated with the current temperature of the combustion air.

3. The combustion control method for a glass furnace as described in claim 1, characterized in that, The step of determining the target fuel quantity ratio for each of the small furnaces based on the outlet mass ratio of the combustion air includes: Obtain the preset excess air coefficient for each of the small furnaces; The target fuel quantity ratio is determined based on the outlet mass ratio of the combustion air and the preset excess air coefficient, wherein the target fuel quantity ratio is positively correlated with the outlet mass ratio of the combustion air and negatively correlated with the excess air coefficient.

4. The combustion control method for a glass furnace as described in claim 3, characterized in that, The preset excess air coefficient of each of the small furnaces gradually increases from the feeding end to the clarification end of the glass furnace. The preset excess air coefficient of the first pair of small furnaces at the feeding end is 1.02 to 1.10, and the preset excess air coefficient of the last pair of small furnaces at the clarification end is 1.10 to 1.

20.

5. The combustion control method for a glass furnace according to claim 4, characterized in that, The step of controlling the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air includes: Obtain the current excess air coefficient for each of the aforementioned small furnaces; If the current excess air coefficient does not meet the range of the preset excess air coefficient, the total amount of combustion air is adjusted, wherein the outlet mass ratio of the combustion air of each of the small furnaces remains unchanged. Obtain the current temperature of the glass furnace; If the current temperature of the glass furnace does not meet the preset temperature range, the total amount of fuel and the total amount of combustion air are adjusted, wherein the target fuel quantity ratio and the combustion air outlet mass ratio of each small furnace remain unchanged.

6. The combustion control method for a glass furnace as described in claim 1, characterized in that, The regenerator chamber includes at least one grid body, and prior to the step of determining the outlet mass ratio of the combustion air in each of the small furnaces based on the furnace width coefficient of each of the small furnaces and the current temperature of the combustion air, the regenerator chamber further includes: Based on the structural and temperature parameters of the lattice of the regenerator, the inlet mass ratio of combustion air for each of the small furnaces is determined. The outlet mass ratio of combustion air is positively correlated with the inlet mass ratio of combustion air. The structural parameters of the lattice include the length of the lattice, and the temperature parameters include the average inlet and outlet temperatures of the lattice. The inlet mass ratio of combustion air is positively correlated with the length of the lattice, and negatively correlated with the average inlet and outlet temperatures of the lattice.

7. The combustion control method for a glass furnace as described in claim 1, characterized in that, The width coefficient of the small furnace is obtained through fluid dynamics simulation calculation of the glass furnace.

8. A combustion system for a glass furnace, characterized in that, The system includes: The heat storage chamber is used to preheat the combustion air; A small furnace, connected to the heat storage chamber, is used to guide the combustion air; The control module is used to determine the total amount of combustion air in the regenerator, the total amount of fuel in the glass furnace, the furnace width coefficient of the small furnace, and the current temperature of the combustion air in the small furnace; determine the outlet mass ratio of the combustion air in each small furnace based on the furnace width coefficient and the current temperature of the combustion air; determine the target fuel quantity ratio of each small furnace based on the outlet mass ratio of the combustion air; and control the combustion process of the glass furnace based on the target fuel quantity ratio, the outlet mass ratio of the combustion air, the total amount of fuel, and the total amount of combustion air.

9. A combustion control device for a glass furnace, characterized in that, The device includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, the computer program being configured to implement the steps of the combustion control method for a glass furnace as described in any one of claims 1 to 7.

10. A storage medium, characterized in that, The storage medium is a computer-readable storage medium, and a computer program is stored on the storage medium. When the computer program is executed by a processor, it implements the steps of the combustion control method for a glass furnace as described in any one of claims 1 to 7.

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