Annealing combustion-supporting device and float glass production system

Abstract

The utility model belongs to float glass manufacturing technical field especially relates to a kind of annealing combustion-supporting equipment and float glass production system.Annealing combustion-supporting equipment includes: annealing kiln, pipeline assembly, fan assembly and combustion furnace, annealing kiln has the annealing section for glass ribbon to place, combustion furnace has combustion cavity, pipeline assembly is connected annealing section and combustion cavity, fan assembly is set to pipeline assembly, and it is used to drive the air flow in pipeline assembly;Air flows through annealing section, and absorbs the heat of glass ribbon, and flows into combustion cavity by pipeline assembly.The utility model preheats combustion-supporting air using the heat released in the annealing process of glass ribbon, improves the air temperature entering combustion cavity, to improve fuel combustion efficiency, reduce the consumption of fuel and save energy cost.

Description

Technical Field

[0001] This utility model belongs to the field of float glass manufacturing technology, and in particular relates to an annealing combustion aid and a float glass production system. Background Technology

[0002] In the float glass production process, fuel costs account for approximately 30% of the total production cost. Improving combustion efficiency is an effective way to reduce glass manufacturing costs. Combustion mostly occurs in the small furnace. Since the air entering the small furnace from the air inlet is generally at room temperature, the temperature of the combustion air entering the small furnace can be increased by placing the air inlet at the location of the bubble layer or the top of the cooling section, and by increasing the insulation of the pipes.

[0003] However, due to the limited heating of the combustion air at the location of the bubbling layer or the top of the cooling section, the temperature of the combustion air entering the kiln generally does not exceed 60°C, resulting in limited fuel savings. Utility Model Content

[0004] The purpose of this application is to provide an annealing combustion aid device, which aims to solve the problem of how to save energy.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: In a first aspect, an annealing combustion aid device is provided, comprising: an annealing furnace, a pipe assembly, a fan assembly, and a combustion furnace. The annealing furnace has an annealing zone for placing glass ribbons, the combustion furnace has a combustion chamber, the pipe assembly connects the annealing zone and the combustion chamber, and the fan assembly is disposed in the pipe assembly and is used to drive airflow within the pipe assembly. The air flows through the annealing zone, absorbs heat from the glass ribbon, and flows into the combustion chamber through the pipe assembly.

[0006] In some embodiments, the fan assembly includes a first fan and a second fan arranged at a distance from the first fan, both the first fan and the second fan being connected to the duct assembly, and the air flowing sequentially through the first fan and the second fan.

[0007] In some embodiments, the power of the first fan is less than the power of the second fan.

[0008] In some embodiments, the duct assembly includes multiple ventilation ducts, and the annealing furnace, the first fan, the second fan, and the combustion furnace are sequentially connected through the multiple ventilation ducts.

[0009] In some embodiments, the ventilation duct includes a duct body, an insulation layer covering the duct body, and a protective layer surrounding the insulation layer.

[0010] In some embodiments, the duct assembly further includes an exhaust gas duct and a first control valve disposed on the exhaust gas duct, wherein the exhaust gas duct is disposed on the ventilation duct between the first fan and the second fan.

[0011] In some embodiments, a second control valve is further provided on the ventilation duct between the first fan and the second fan.

[0012] In some embodiments, the annealing combustion aid further includes an upper heat exchange air duct, a lower heat exchange air duct located below the upper heat exchange air duct, and an intermediate heat exchange air duct connecting the upper heat exchange air duct and the lower heat exchange air duct. The upper heat exchange air duct, the lower heat exchange air duct, and the intermediate heat exchange air duct are all arranged within the annealing zone, and the pipe assembly is connected to the lower heat exchange air duct.

[0013] In some embodiments, the annealing combustion aid further includes a pressure stabilizing tank connected to the piping assembly, located between the fan assembly and the combustion furnace along the air flow path.

[0014] Secondly, a float glass production system is provided, which includes the annealing combustion aid equipment. The float glass production system also includes a gas air branch pipe, which is connected to the pipe assembly and is used to supply air into the combustion chamber. The beneficial effects of this application are as follows: by guiding the hot air in the annealing furnace to the combustion chamber of the combustion furnace through the pipe assembly and fan assembly, the heat released during the glass belt annealing process is used to preheat the combustion air, thereby increasing the air temperature entering the combustion chamber, thus improving fuel combustion efficiency, reducing fuel consumption and saving energy costs, while reducing environmental emissions, and achieving energy conservation and emission reduction in the float glass production process. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or exemplary technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the annealing combustion aid device provided in the embodiments of this application; Figure 2 This is a schematic diagram of the annealing combustion aid device provided in another embodiment of this application; Figure 3 This is a schematic diagram of the annealing combustion aid device provided in another embodiment of this application; Figure 4This is a cross-sectional schematic diagram of a ventilation duct provided in another embodiment of this application.

[0017] The following are the labeling elements in the figure: 100. Annealing combustion aid equipment; 101. Annealing furnace; 200. Fan assembly; 300. Pipe assembly; 401. Gas and air branch pipe; 600. Combustion furnace; 201. First fan; 202. Second fan; 310. Ventilation duct; 301. First ventilation duct; 302. Second ventilation duct; 303. Third ventilation duct; 304. Fourth ventilation duct; 120. Glass belt; 110. Conveyor roller; 102. Annealing zone; 103. Upper heat exchange duct; 104. Intermediate heat exchange duct; 105. Lower heat exchange duct; 305. Exhaust gas duct; 321. First control valve; 322. Second control valve; 402. Gate valve; 500. Pressure stabilizing tank; 311. Protective layer; 312. Insulation layer; 313. Pipe body. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly or indirectly attached to that other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to that other component. The terms "upper," "lower," "left," "right," etc., indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, and are for ease of description only, not to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. "A plurality" means two or more, unless otherwise explicitly defined.

[0020] Please see Figures 1 to 3 This application provides an annealing combustion aid device 100, which is used to anneal a glass strip 120 and can improve the combustion efficiency of the gas.

[0021] Please see Figures 1 to 3The annealing combustion aid 100 includes an annealing furnace 101, a piping assembly 300, a fan assembly 200, and a combustion furnace 600. The annealing furnace 101 has an annealing zone 102 for placing a glass ribbon 120. The glass ribbon 120 enters the annealing zone 102 from one end of the annealing furnace 101 and exits the annealing zone 102 from the other end of the annealing furnace 101. The temperature of the glass ribbon 120 when entering the annealing zone 102 is approximately 600 degrees Celsius, and the temperature of the glass ribbon 120 when leaving the annealing zone 102 is approximately 80 degrees Celsius. Heat exchange occurs between the air and the glass ribbon 120 within the annealing zone 102; the temperature of the air rises, while the temperature of the glass ribbon 120 decreases and undergoes cooling annealing.

[0022] Please see Figures 1 to 3 The combustion furnace 600 has a combustion chamber. In this embodiment, the combustion furnace 600 is a small furnace used in float glass production. The pipe assembly 300 connects the annealing zone 102 and the combustion chamber. The fan assembly 200 is disposed in the pipe assembly 300 and is used to drive the air flow within the pipe assembly 300. The air flows through the annealing zone 102, absorbs heat from the glass strip 120, and flows into the combustion chamber through the pipe assembly 300. It can be understood that the air temperature rises in the annealing zone 102, forming combustion air. After the combustion air enters the combustion chamber, the temperature of the mixture of combustion air and gas increases, thereby improving the combustion efficiency of the gas and reducing fuel consumption.

[0023] Please see Figures 1 to 3 In this embodiment, the hot air in the annealing furnace 101 is guided to the combustion chamber of the combustion furnace 600 through the pipe assembly 300 and the fan assembly 200. The heat released during the annealing of the glass belt 120 is used to preheat the combustion air, thereby increasing the air temperature entering the combustion chamber, which improves the fuel combustion efficiency, reduces fuel consumption and saves energy costs, and at the same time reduces environmental emissions, thus achieving energy conservation and emission reduction in the float glass production process.

[0024] Understandably, when the glass ribbon 120 passes through the annealing zone 102, the annealing furnace 101 can anneal the glass ribbon 120 through heat exchange with air, thereby eliminating the internal stress of the glass. Within the annealing zone 102, the glass ribbon 120 sequentially passes through annealing stages A (preheating and homogenization zone), B (slow cooling zone), C (slow cooling zone), D (rapid cooling zone), and F (quench cooling zone), causing the temperature of the glass ribbon 120 to gradually decrease from approximately 600℃ to around 80℃.

[0025] Please see Figures 1 to 3Optionally, when the air flows through the annealing zone 102, it exchanges heat and the air temperature can reach 400-450℃. The temperature range of the air flowing to the combustion chamber is 300-350℃. At this time, the air is mixed with a certain amount of room temperature air, so that the temperature of the air entering the combustion furnace can reach 110℃.

[0026] Optionally, the air flow rate within the duct assembly 300 ranges from 6000 to 8000 Nm. 3 / h.

[0027] Please see Figures 1 to 3 In some embodiments, the fan assembly 200 includes a first fan 201 and a second fan 202 arranged at a distance from the first fan 201. Both the first fan 201 and the second fan 202 are connected to the duct assembly 300, and the air flows through the first fan 201 and the second fan 202 in sequence.

[0028] Optionally, by setting up a first fan 201 and a second fan 202 arranged at intervals, air can flow through the two in sequence to achieve multi-stage pressurization and flow control, improve the stability and efficiency of air delivery, ensure that hot air is efficiently transferred from the annealing zone 102 to the combustion chamber, further enhance the preheating effect of the combustion air, reduce system energy consumption and improve overall combustion performance.

[0029] Please see Figures 1 to 3 Optionally, both the first fan 201 and the second fan 202 are centrifugal fans. Centrifugal fans have high wind pressure characteristics, which can effectively overcome system resistance and are suitable for long-distance air supply or complex duct layouts. They are energy-efficient, with some models using frequency conversion technology, reducing energy consumption by 30% compared to traditional fans. Their compact design saves installation space.

[0030] Please see Figures 1 to 3 In some embodiments, the power of the first fan 201 is less than the power of the second fan 202.

[0031] Optionally, by making the power of the first fan 201 less than that of the second fan 202, a gradient wind drive is achieved. The first fan 201 provides a gentle extraction speed, avoiding excessively fast airflow that could disturb the annealing process of the glass strip 120. The second fan 202 operates at a higher power, enhancing the pushing of air to overcome duct resistance, thereby optimizing the airflow path, reducing energy loss during airflow, and improving heat recovery efficiency.

[0032] Optionally, in this embodiment, the power of the first fan 201 is 55KW and the power of the second fan 202 is 75KW. In other embodiments, the power of the first fan 201 and the second fan 202 can be selected according to the actual situation, and there is no limitation here.

[0033] Please see Figures 1 to 3 In some embodiments, the duct assembly 300 includes multiple ventilation ducts 310, and the annealing furnace 101, the first fan 201, the second fan 202 and the combustion furnace 600 are sequentially connected through the multiple ventilation ducts 310.

[0034] Optionally, for ease of description, the multiple ventilation ducts 310 include a first ventilation duct 301, a second ventilation duct 302, and a third ventilation duct 303. The first duct connects the annealing zone 102 and the first fan 201, the second duct connects the first fan 201 and the second fan 202, and the third duct connects the second fan 202 and the combustion chamber.

[0035] Please see Figures 1 to 3 The first ventilation duct 301, the second ventilation duct 302 and the third ventilation duct 303 are connected in sequence to the annealing furnace 101, the first fan 201, the second fan 202 and the combustion furnace 600, forming a modular pipeline system. This facilitates installation and maintenance, while ensuring the continuity and sealing of air during transmission, minimizing heat loss, further increasing the temperature of the combustion air, saving fuel and reducing production costs.

[0036] Please see Figure 4 In some embodiments, the ventilation duct 310 includes a duct body 313, an insulation layer 312 covering the duct body 313, and a protective layer 311 surrounding the insulation layer 312.

[0037] Optionally, the outer diameter of the tube body 313 is 800 mm.

[0038] Please see Figure 4 Optionally, the pipe body 313 can be made of stainless steel. The insulation layer 312 can be made of asbestos, while the protective layer 311 can be made of aluminum.

[0039] Stainless steel is a chromium-containing iron alloy with excellent corrosion resistance and high-temperature resistance. It has a smooth surface and is not easily rusted. Its high strength and toughness make it widely used in ventilation and ductwork applications.

[0040] Asbestos is a natural silicate mineral fiber with excellent high-temperature resistance and thermal insulation properties, and is commonly used in fireproof materials and thermal insulation products. It is lightweight and chemically stable.

[0041] Aluminum is lightweight and possesses excellent electrical and thermal conductivity. A dense oxide film forms on its surface, giving it strong corrosion resistance. Aluminum is also highly ductile and easy to process and shape, making it widely used in the protective and packaging industries.

[0042] Please see Figure 4 Optionally, by setting a multi-layer structure of pipe body 313, insulation layer 312 and protective layer 311 on ventilation duct 310, heat insulation and heat preservation can be effectively achieved and pipe durability can be enhanced, heat loss of hot air during transmission can be reduced, and the air temperature entering the combustion chamber can be increased, thereby improving combustion efficiency, reducing energy consumption, and improving the reliability and safety of the equipment.

[0043] Please see Figures 1 to 3 In some embodiments, the duct assembly 300 further includes an exhaust gas duct 305 and a first control valve 321 disposed on the exhaust gas duct 305, wherein the exhaust gas duct 305 is disposed on the ventilation duct 310 between the first fan 201 and the second fan 202.

[0044] Optionally, the first control valve 321 is a flap valve. When the combustion furnace 600 is not turned on, the first control valve 321 can be opened to allow air to be directly discharged into the atmosphere through the exhaust pipe 305. When the combustion furnace 600 is turned on, the first control valve 321 can be closed to allow air to enter the combustion chamber.

[0045] By installing an exhaust gas pipe 305 and a first control valve 321 on the ventilation duct 310 between the first fan 201 and the second fan 202, the controllable emission of exhaust gas and the regulation of system pressure can be achieved, avoiding the accumulation of harmful gases in the pipe and ensuring the purity and stability of airflow.

[0046] Please see Figures 1 to 3 In some embodiments, a second control valve 322 is also provided on the ventilation duct 310 between the first fan 201 and the second fan 202.

[0047] Optionally, a second control valve 322 can be installed on the ventilation duct 310 between the first fan 201 and the second fan 202 to achieve precise control of airflow. This facilitates adjustment of the hot air delivery volume according to production needs, avoiding energy waste caused by excessive or insufficient delivery, further improving heat utilization efficiency, and enhancing the system's flexibility and energy-saving effect. When the first control valve 321 is open, the second control valve 322 is closed, and when the first control valve 321 is closed, the second control valve 322 is open.

[0048] Optionally, the second control valve 322 is a flap valve.

[0049] Please see Figures 1 to 3In some embodiments, the annealing combustion aid device 100 further includes an upper heat exchange air duct, a lower heat exchange air duct located below the upper heat exchange air duct, and an intermediate heat exchange air duct connecting the upper heat exchange air duct and the lower heat exchange air duct. The upper heat exchange air duct, the lower heat exchange air duct, and the intermediate heat exchange air duct are all arranged within the annealing zone 102, and the pipe assembly 300 is connected to the lower heat exchange air duct.

[0050] Optionally, the first ventilation duct 301 is connected to the lower heat exchange duct, and external air flows into the upper heat exchange duct and then into the lower heat exchange duct through the intermediate heat exchange duct. The upper heat exchange duct, the lower heat exchange duct, and the intermediate heat exchange duct exchange heat with the glass strip 120, thereby improving the targeting and efficiency of hot air collection.

[0051] Please see Figures 1 to 3 In some embodiments, the annealing combustion aid device 100 further includes a pressure stabilizing tank 500 connected to the piping assembly 300, and the pressure stabilizing tank 500 is located between the fan assembly 200 and the combustion furnace 600 along the air flow path.

[0052] Optionally, by setting multiple spaced conveyor rollers 110 in the annealing zone 102, the glass strip 120 can be smoothly conveyed, ensuring uniform heat distribution and efficient transfer to the air, avoiding deformation or uneven thermal stress of the glass strip 120, further improving the heat recovery quality, and enhancing the overall system stability and production efficiency.

[0053] Please see Figures 1 to 3 In some embodiments, the annealing combustion aid 100 further includes a pressure stabilizing tank 500 connected to the piping assembly 300, located between the fan assembly 200 and the combustion furnace 600 along the air flow path. It is understood that, to avoid heat loss, an insulation layer 312 may be provided on the outer surface of the pressure stabilizing tank 500.

[0054] Please see Figure 3 Optionally, the pressure stabilizing tank 500 is connected to the third ventilation duct 303. The duct assembly 300 also includes a fourth ventilation duct 304. The two ends of the fourth ventilation duct 304 are connected to the pressure stabilizing tank 500 and the combustion furnace 600. The second fan 202 first stores air in the pressure stabilizing tank 500 and stabilizes the pressure through the pressure stabilizing tank 500. The stabilized air then enters the combustion furnace 600 through the fourth ventilation duct 304, thereby stabilizing the air pressure entering the combustion furnace 600 and keeping the flow rate uniform and stable, thus ensuring that the combustion air is always mixed with the gas in a set ratio, ultimately improving the combustion efficiency.

[0055] Please see Figures 1 to 3This utility model also proposes a float glass production system, which includes an annealing and combustion-supporting device 100. The specific structure of the annealing and combustion-supporting device 100 is as described in the above embodiments. Since this float glass production system adopts all the technical solutions of all the above embodiments, it also has all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0056] Please see Figures 1 to 3 In some embodiments, the float glass production system further includes a gas supply branch pipe 401, which is connected to the pipe assembly 300 and is used to supply air into the combustion chamber.

[0057] Optionally, four gas-air branch pipes 401 are provided, and all four gas-air branch pipes 401 are connected to the combustion chamber, so that preheated air can be directly injected into the combustion chamber, improving combustion uniformity and efficiency, and significantly reducing fuel consumption.

[0058] Optionally, each gas-air branch pipe 401 is equipped with a gate valve 402, which is used to regulate and control the airflow of the corresponding gas-air branch pipe 401. The high-temperature air flowing out of the gas-air branch pipe 401 mixes with a certain amount of room temperature air to form combustion air at a temperature of approximately 110 degrees Celsius. The combustion air at a temperature of 110 degrees Celsius is then heated by heat exchange in the heat storage chamber before mixing with the gas in the combustion chamber and burning together, thereby improving the combustion efficiency of the gas.

[0059] The above are merely optional embodiments of this application and are not intended to limit 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 scope of the claims of this application.

Claims

1. An annealing combustion aid device, characterized in that, The annealing combustion aid includes an annealing furnace, a piping assembly, a fan assembly, and a combustion furnace. The annealing furnace has an annealing zone for placing the glass ribbon, and the combustion furnace has a combustion chamber. The piping assembly connects the annealing zone and the combustion chamber. The fan assembly is disposed in the piping assembly and is used to drive the airflow within the piping assembly. The air flows through the annealing zone, absorbs the heat from the glass ribbon, and flows into the combustion chamber through the piping assembly.

2. The annealing combustion aid equipment as described in claim 1, characterized in that: The fan assembly includes a first fan and a second fan arranged at a distance from the first fan. Both the first fan and the second fan are connected to the duct assembly, and the air flows through the first fan and the second fan in sequence.

3. The annealing combustion aid equipment as described in claim 2, characterized in that: The power of the first fan is less than that of the second fan.

4. The annealing combustion aid equipment as described in claim 2, characterized in that: The piping assembly includes multiple ventilation ducts, and the annealing furnace, the first fan, the second fan, and the combustion furnace are sequentially connected through the multiple ventilation ducts.

5. The annealing combustion aid equipment as described in claim 4, characterized in that: The ventilation duct includes a pipe body, an insulation layer covering the pipe body, and a protective layer surrounding the insulation layer.

6. The annealing combustion aid equipment as described in claim 4, characterized in that: The duct assembly also includes an exhaust gas duct and a first control valve disposed on the exhaust gas duct, and the exhaust gas duct is disposed on the ventilation duct between the first fan and the second fan.

7. The annealing combustion aid equipment as described in any one of claims 2-6, characterized in that: A second control valve is also provided on the ventilation duct between the first fan and the second fan.

8. The annealing combustion aid equipment as described in any one of claims 1-6, characterized in that: The annealing combustion aid also includes an upper heat exchange air duct, a lower heat exchange air duct located below the upper heat exchange air duct, and an intermediate heat exchange air duct connecting the upper heat exchange air duct and the lower heat exchange air duct. The upper heat exchange air duct, the lower heat exchange air duct, and the intermediate heat exchange air duct are all arranged within the annealing zone, and the pipe assembly is connected to the lower heat exchange air duct.

9. The annealing combustion aid equipment as described in any one of claims 1-6, characterized in that: The annealing combustion aid also includes a pressure stabilizing tank connected to the piping assembly, and the pressure stabilizing tank is located between the fan assembly and the combustion furnace along the air flow path.

10. A float glass production system, characterized in that, The float glass production system includes the annealing combustion aid as described in any one of claims 1-9, and further includes a gas air branch pipe, which is connected to the pipe assembly and used to supply air into the combustion chamber.

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