Furnace and glass heating system for producing glass
Patent Information
- Application Number
- CN202521527833.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-21
- Publication Date
- 2026-10-23
- Estimated Expiration
- 2035-07-21
AI Technical Summary
[0004]本实用新型的主要目的是提出一种用于生产玻璃的窑炉及玻璃加热系统，旨在解决目前玻璃加热的效率低、质量差的技术问题
[0020]在本实用新型的技术方案中，通过在加热区域内沿液态玻璃原料的流动方向(即第一方向)差异化配置有热辐射强度不同的第一燃料介质和第二燃料介质(即靠近热点处采用较高热辐射强度的第一燃料介质，远离热点处采用较低热辐射强度的第二燃料介质)，精确地在加热区域内部形成沿第一方向的温度梯度。该温度梯度驱动形成的、与液态玻璃原料流动方向(即第一方向)相反的逆向环流，有效促进了固态玻璃原料和液态玻璃原料的强制对流与混合。采用上述方式，大大减少了传统窑炉中因温度分布不均或单向流动导致的成分偏析、未熔颗粒滞留和气泡聚集等问题，从而显著提升了熔融玻璃的均质性、澄清度和最终平板玻璃的产品质量。
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Figure CN224883936U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of glass heating technology, and in particular to a kiln and glass heating system for glass production. Background Technology
[0002] With the continuous advancement of technology, the demand for photovoltaic glass, as a new energy material, has grown rapidly in recent years, and production capacity has expanded significantly, leading to increasing competitive pressure on enterprises. Only by continuously pursuing low costs and high quality can they remain competitive in society and the industry.
[0003] The progress made in the construction of glass furnaces in recent years is marked by high efficiency, low energy consumption, long furnace life, and large scale. Low energy consumption is achieved through continuous efforts to minimize the impact of furnace structure improvements, insulation methods, and combustion process and equipment optimization. Regarding combustion processes, most large furnaces use air combustion, primarily relying on heavy oil, natural gas, or coal gas as fuel. Furthermore, most furnaces employ a single combustion method, resulting in low efficiency and poor glass quality during heating. Utility Model Content
[0004] The main purpose of this invention is to propose a furnace and glass heating system for glass production, aiming to solve the current technical problems of low efficiency and poor quality in glass heating.
[0005] To achieve the above objectives, this utility model proposes a furnace for producing glass, the furnace including a heating zone for melting solid glass raw materials into liquid glass raw materials. The flow direction of the liquid glass raw materials is defined as a first direction. Along the first direction, multiple heating sections are arranged in the heating zone. There are hot spots in the heating zone. The heating sections near the hot spots are filled with a first fuel medium, and the heating sections away from the hot spots are filled with a second fuel medium.
[0006] The thermal radiation intensity of the first fuel medium is higher than that of the second fuel medium, so as to form a temperature difference in the heating region, thereby generating a reverse circulation in the heating region in the opposite direction to the first direction.
[0007] In some embodiments, at least six heating elements are provided in the heating area. Along the first direction, the six heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, and a sixth heating element. A hot spot is formed in the heating area near the fifth heating element.
[0008] The fifth heating section is filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, and the sixth heating section are filled with the second fuel medium.
[0009] In some embodiments, at least seven heating elements are provided in the heating area. Along the first direction, the seven heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, a sixth heating element, and a seventh heating element. A hot spot is formed in the heating area near the fifth heating element.
[0010] The fifth heating section is filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, the sixth heating section, and the seventh heating section are filled with the second fuel medium.
[0011] In some embodiments, at least nine heating elements are provided in the heating area. Along the first direction, the nine heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, a sixth heating element, a seventh heating element, an eighth heating element, and a ninth heating element. Hot spots are formed in the heating area near the sixth heating element and the seventh heating element.
[0012] The sixth heating section and the seventh heating section are filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, the fifth heating section, the eighth heating section and the ninth heating section are filled with the second fuel medium.
[0013] In some embodiments, the number N1 of heating elements filled with the first fuel medium and the number N2 of heating elements filled with the second fuel medium satisfy the following condition: 14% ≤ N1 / N2 ≤ 20%.
[0014] In some embodiments, the thermal radiation intensity T1 of the first fuel medium satisfies: 1550℃≤T1≤1590℃, and the thermal radiation intensity T2 of the second fuel medium satisfies: 1350℃≤T2≤1440℃.
[0015] In some embodiments, the flame nozzle of the heating section filled with the first fuel medium is disposed on the side near the liquid glass raw material, and the flame nozzle of the heating section filled with the second fuel medium is disposed on the side.
[0016] In some embodiments, the furnace further includes a cooling zone for condensing liquid glass raw materials into flat glass. Along the first direction, the cooling zone is located downstream of the heating zone, and a blocking portion is provided between the cooling zone and the heating zone.
[0017] In some embodiments, the distance between the blocking portion and the liquid glass raw material corresponds to the thickness of the flat glass.
[0018] Correspondingly, this utility model also proposes a glass heating system, including the furnace for glass production described in any of the above embodiments.
[0019] Compared with the prior art, the beneficial effects of this utility model are:
[0020] In the technical solution of this utility model, by differentially configuring a first fuel medium and a second fuel medium with different thermal radiation intensities along the flow direction (i.e., the first fuel medium with higher thermal radiation intensity is used near the hot spot, and the second fuel medium with lower thermal radiation intensity is used far from the hot spot) within the heating zone, a temperature gradient along the first direction is precisely formed within the heating zone. This temperature gradient drives a countercurrent circulation that is opposite to the flow direction (i.e., the first direction) of the liquid glass raw material, effectively promoting forced convection and mixing of the solid and liquid glass raw materials. Using this method, problems such as component segregation, unmelted particle retention, and bubble aggregation caused by uneven temperature distribution or unidirectional flow in traditional furnaces are greatly reduced, thereby significantly improving the homogeneity, clarity, and final flat glass product quality of the molten glass.
[0021] Furthermore, the primary fuel medium with high thermal radiation intensity is concentrated in the hot spots requiring high temperatures to ensure efficient and stable operation. In areas farther from the hot spots where peak temperatures are less critical, a secondary fuel medium with low thermal radiation intensity is used, avoiding unnecessary overheating and energy waste. This on-demand, zoned optimization approach, compared to traditional single-combustion methods, effectively reduces overall fuel consumption and significantly improves kiln thermal efficiency, thereby enhancing heating efficiency and reducing heating costs.
[0022] The glass heating system of the aforementioned kiln can improve the quality and efficiency of glass production and reduce the cost of glass production. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0024] Figure 1 This is a schematic diagram of the overall structure of a kiln provided in an embodiment of the present invention;
[0025] Figure 2 This is a schematic diagram of the structure of the heating section in a kiln provided in an embodiment of the present invention;
[0026] Figure 3 This is a schematic diagram of another structure of the heating section in a kiln provided in one embodiment of the present invention.
[0027] Explanation of icon numbers:
[0028] 10. Kiln;
[0029] 100. Heating area;
[0030] 110. Heating unit; 120. Flame nozzle;
[0031] 111. First heating section; 112. Second heating section; 113. Third heating section; 114. Fourth heating section; 115. Fifth heating section; 116. Sixth heating section; 117. Seventh heating section; 118. Eighth heating section; 119. Ninth heating section;
[0032] 200. Cooling area;
[0033] 300. Blocking section;
[0034] X, the first direction.
[0035] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0036] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0037] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.
[0038] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or," "and / or," or "and / or" throughout the text implies three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where A and B are simultaneously satisfied. Furthermore, 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 by this utility model.
[0039] With the continuous advancement of technology, the demand for photovoltaic glass, as a new energy material, has grown rapidly in recent years, and production capacity has expanded significantly, leading to increasing competitive pressure on enterprises. Only by continuously pursuing low costs and high quality can they remain competitive in society and the industry.
[0040] The progress made in the construction of glass furnaces in recent years is marked by high efficiency, low energy consumption, long furnace life, and large scale. Low energy consumption is achieved through continuous efforts to minimize the impact of furnace structure improvements, insulation methods, and combustion process and equipment optimization. Regarding combustion processes, most large furnaces use air combustion, primarily relying on heavy oil, natural gas, or coal gas as fuel. Furthermore, most furnaces employ a single combustion method, resulting in low efficiency and poor glass quality during heating.
[0041] Based on this, in order to solve the current technical problems of low efficiency and poor quality in glass heating, referring to Figures 1 to 3This utility model provides a furnace 10 for producing glass. The furnace 10 includes a heating zone 100, which is used to melt solid glass raw materials into liquid glass raw materials. The solid glass raw materials are fed into the furnace 10 through a feeding port. Under the pushing force of the accumulated solid glass raw materials and the traction force within the furnace 10, the solid glass raw materials can move through the heating zone 100 and melt to form liquid glass raw materials. The flow direction of the liquid glass raw materials is defined as a first direction X. Along the first direction X, a plurality of heating sections 110 are provided in the heating zone 100. The heating zone 100 has hot spots. The heating sections 110 near the hot spots are filled with a first fuel medium, and the heating sections 110 away from the hot spots are filled with a second fuel medium. The thermal radiation intensity of the first fuel medium is higher than that of the second fuel medium, so as to form a temperature difference within the heating zone 100, resulting in a reverse circulation in the heating zone 100 in the opposite direction to the first direction X. For example, the first fuel medium can be heavy oil, and the second fuel medium can be natural gas. Heavy oil has a high calorific value, strong combustion flame rigidity, high flame emissivity, and strong radiation capability, with a combustion efficiency of 85-90% and no flameless section. Natural gas has a low calorific value, a soft and drifting combustion flame, low flame emissivity, and weak radiation capability, with a combustion efficiency of 95-98% and a flameless section. The temperature difference generated between the first and second fuel media can create a thermal barrier effect within the furnace 10, thereby producing a damping effect within the furnace 10. This allows the liquid glass raw material to move backward at a slower speed along the first direction X, delaying the residence time of the liquid glass raw material at the hot spot, ensuring that the solid glass raw material can be fully heated and melted, and improving the conversion effect of the solid glass raw material into liquid glass raw material.
[0042] Specifically, in this embodiment, by differentially configuring a first fuel medium and a second fuel medium with different thermal radiation intensities (i.e., a first fuel medium with higher thermal radiation intensity near the hot spot and a second fuel medium with lower thermal radiation intensity away from the hot spot) along the flow direction (i.e., the first direction X) of the liquid glass raw material within the heating zone 100, a temperature gradient along the first direction X is precisely formed within the heating zone 100. This temperature gradient drives a counter-current circulation that is opposite to the flow direction (i.e., the first direction X) of the liquid glass raw material, effectively promoting forced convection and mixing of the solid and liquid glass raw materials. Using this method, problems such as component segregation, unmelted particle retention, and bubble aggregation caused by uneven temperature distribution or unidirectional flow in traditional furnaces 10 are greatly reduced, thereby significantly improving the homogeneity, clarity, and final flat glass product quality of the molten glass.
[0043] Furthermore, the high-heat-radiation intensity primary fuel medium is concentrated in the hot spots requiring high temperatures to ensure efficient and stable operation. In areas farther from the hot spots where peak temperatures are less critical, the low-heat-radiation intensity secondary fuel medium is used, avoiding unnecessary overheating and energy waste. This on-demand, zone-optimized energy supply method, compared to traditional single-combustion methods, effectively reduces overall fuel consumption and significantly improves the thermal efficiency of the kiln, thereby increasing processing efficiency and reducing processing costs.
[0044] In some embodiments, refer to Figure 1 A kiln 10 with six heating sections 110 is provided. For example, at least six heating sections 110 are provided in a heating region 100. Along a first direction X, the six heating sections 110 are a first heating section 111, a second heating section 112, a third heating section 113, a fourth heating section 114, a fifth heating section 115, and a sixth heating section 116. A hot spot is formed in the heating region 100 near the fifth heating section 115. The fifth heating section 115 is filled with a first fuel medium, while the first heating sections 111, the second heating section 112, the third heating section 113, the fourth heating section 114, and the sixth heating section 116 are filled with a second fuel medium.
[0045] In other embodiments, reference is made to Figure 1 A kiln 10 with seven heating sections 110 is provided. For example, at least seven heating sections 110 are provided in a heating region 100. Along a first direction X, the seven heating sections 110 are a first heating section 111, a second heating section 112, a third heating section 113, a fourth heating section 114, a fifth heating section 115, a sixth heating section 116, and a seventh heating section 117. A hot spot is formed in the heating region 100 near the fifth heating section 115. The fifth heating section 115 is filled with a first fuel medium, while the first heating sections 111, the second heating section 112, the third heating section 113, the fourth heating section 114, the sixth heating section 116, and the seventh heating section 117 are filled with a second fuel medium.
[0046] In other embodiments, reference is made to Figure 1A kiln 10 with nine heating sections 110 is provided. For example, at least nine heating sections 110 are provided in a heating region 100. Along a first direction X, the nine heating sections 110 are designated as a first heating section 111, a second heating section 112, a third heating section 113, a fourth heating section 114, a fifth heating section 115, a sixth heating section 116, a seventh heating section 117, an eighth heating section 118, and a ninth heating section 119. Hot spots are formed in the heating region 100 near the sixth heating section 116 and the seventh heating section 117. The sixth heating section 116 and the seventh heating section 117 are filled with a first fuel medium, while the first heating section 111, the second heating section 112, the third heating section 113, the fourth heating section 114, the fifth heating section 115, the eighth heating section 118, and the ninth heating section 119 are filled with a second fuel medium.
[0047] Based on the three embodiments described above, and considering actual production needs such as the production heat of the kiln 10, the volume of the kiln 10, and the output of the kiln 10, the number of heating sections 110 within the kiln 10 can be varied. Correspondingly, different numbers of heating sections 110 result in hot spots at different locations within the heating zone 100 of the kiln 10. The positions and numbers of the heating sections 110 filled with the first fuel medium and the heating sections 110 filled with the second fuel medium can be adjusted accordingly based on the location of the hot spots. Generally, the hot spots are mainly concentrated in the latter half of the heating zone 100. This extends the flow path of the liquid glass raw material within the heating zone 100, improves the conversion efficiency of solid glass raw material into liquid glass raw material, and avoids the inclusion of unmelted raw material particles inside the formed flat glass, thereby improving the processing quality and purity of the flat glass.
[0048] For example, refer to Figure 1 Taking a kiln 10 with nine heating sections 110 as an example, only the heating sections 110 at the hot spots (i.e., the sixth heating section 116 and the seventh heating section 117) use a first fuel medium with high thermal radiation intensity, while the remaining seven heating sections 110 (i.e., the first heating section 111, the second heating section 112, the third heating section 113, the fourth heating section 114, the fifth heating section 115, the eighth heating section 118, and the ninth heating section 119) use a second fuel medium with low radiation intensity. This creates an asymmetric temperature field within the heating zone 100, characterized by "mild heating in the front and middle sections - rapid overheating in the middle and rear sections - gradual cooling at the outlet section". This temperature gradient distribution effectively drives the liquid glass raw material to generate a strong countercurrent circulation from the sixth heating section 116 and the seventh heating section 117 in the opposite direction of the first direction X (i.e., the opposite direction of the liquid glass raw material flow). This significantly improves the homogeneous mixing efficiency of the solid and liquid glass raw materials, eliminates the retention of unmelted glass raw materials and bubbles, and thus improves the processing quality and smoothness of flat glass.
[0049] In some embodiments, the number N1 of heating sections 110 filled with the first fuel medium and the number N2 of heating sections 110 filled with the second fuel medium satisfy the following condition: 14% ≤ N1 / N2 ≤ 20%. For example, the value of N1 / N2 can be 14%, 15%, 16%, 17%, 18%, 19%, 20%, etc.
[0050] Specifically, in this embodiment, the value of N1 / N2 is set within the above-mentioned range. On the one hand, this prevents the value of N1 / N2 from being too small (for example, N1 / N2 is 10%, 11%, 12%, etc., in which case the number of heating parts 110 filled with the first fuel medium is small and the number of heating parts 110 filled with the second fuel medium is too large), which would result in insufficient thermal radiation intensity at the hot spot and a decrease in the reverse circulation driving force. On the other hand, this prevents the value of N1 / N2 from being too large (for example, N1 / N2 is 25%, 28%, 30%, etc., in which case the number of heating parts 110 filled with the first fuel medium is large and the number of heating parts 110 filled with the second fuel medium is too small), which would result in excessively high thermal radiation intensity at the hot spot, causing energy overflow and ineffectively increasing energy consumption.
[0051] In some embodiments, the thermal radiation intensity T1 of the first fuel medium satisfies: 1550℃ ≤ T1 ≤ 1590℃, and the thermal radiation intensity T2 of the second fuel medium satisfies: 1350℃ ≤ T2 ≤ 1440℃. For example, the value of T1 can be 1550℃, 1560℃, 1570℃, 1580℃, 1590℃, etc., and the value of T2 can be 1350℃, 1370℃, 1400℃, 1420℃, 1440℃, etc. Using the above-mentioned fuel medium can not only meet actual production needs and ensure the formation of efficient counter-current circulation within the heating zone 100, but also avoid excessive consumption of the fuel medium, thus meeting economic and environmental protection requirements.
[0052] In some embodiments, refer to Figures 1 to 3 The flame nozzle 120 of the heating section 110 filled with the first fuel medium is disposed on the side close to the liquid glass raw material, thereby increasing the heat transfer efficiency of the heating section 110 filled with the first fuel medium. The flame nozzle 120 of the heating section 110 filled with the second fuel medium is disposed on the side, thereby decreasing the heat transfer efficiency of the heating section 110 filled with the second fuel medium.
[0053] Specifically, in this embodiment, the heating section 110 filled with the first fuel medium is bottom-fired, so that the heating section 110 filled with the first fuel medium heats the glass raw material in a direct-facing manner to accelerate the melting speed of the solid glass raw material. The heating section 110 filled with the second fuel medium is side-fired, so that the heating section 110 filled with the second fuel medium heats the glass raw material in an off-center manner. By changing the combustion mode of the corresponding heating section 110 due to the different fuel media, it is possible to ensure that different heating sections 110 have different heat transfer effects, thereby increasing the temperature difference between the areas near and far from the hot spot in the heating region 100, so as to more effectively form a countercurrent in the heating region 100, increase the thermal barrier effect, and improve the uniformity of the melt.
[0054] In some embodiments, refer to Figure 1 The furnace 10 also includes a cooling zone 200, which is used to condense liquid glass raw materials into flat glass (i.e., the cooling zone 200 is used to gradually cool the molten and clarified glass liquid to meet the glass forming requirements). Along the first direction X, the cooling zone 200 is located downstream of the heating zone 100, and a blocking part 300 is provided between the cooling zone 200 and the heating zone 100. In some preferred embodiments, the distance between the bottom of the blocking part 300 and the liquid glass raw material corresponds to the thickness of the flat glass, so as to ensure that the formed flat glass can move smoothly from the heating zone 100 to the cooling zone 200 through the gap between the blocking part 300 and the liquid glass raw material.
[0055] Specifically, in this embodiment, by providing a blocking part 300 between the cooling zone 200 and the heating zone 100, on the one hand, the high temperature in the heating zone 100 can be prevented from being transferred to the cooling zone 200, thereby improving the cooling efficiency of the liquid glass raw material in the cooling zone 200; on the other hand, the low temperature in the cooling zone 200 can be prevented from being transferred to the heating zone 100, preventing the low temperature in the cooling zone 200 from disturbing the temperature field in the heating zone 100, and ensuring the stability of the reverse circulation in the heating zone 100; furthermore, it can block impurities such as foam, ensuring the clarity of the glass liquid in the cooling zone 200, and improving the homogeneity and heating quality of the formed flat glass.
[0056] In some embodiments, the blocking part 300 can be a cooling water tank, which can control the secondary heating generated by the backflow of molten glass in the cooling zone, thereby reducing the energy consumption cost of flat glass.
[0057] Correspondingly, another embodiment of this utility model also provides a glass heating system, which includes the furnace 10 for glass production as described in any of the above embodiments. The glass heating system may further include a feeding device and a collecting device. The feeding device is located upstream of the furnace 10 and is used to feed solid glass raw materials into the furnace 10. The collecting device is located downstream of the furnace 10 and is used to collect the flat glass formed within the furnace 10.
[0058] Specifically, in this embodiment, the glass heating system of the kiln 10 described above can improve the quality and efficiency of glass production and reduce the cost of glass production.
[0059] Thanks to the improvements made to the furnace 10 used for glass production described above, the glass heating system of this embodiment has the same technical effects as the furnace 10 described above, which will not be repeated here.
[0060] It should be noted that other aspects of the glass production furnace 10 and glass heating system provided by this utility model can be found in the prior art, and will not be repeated here.
[0061] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.
Claims
1. A furnace for producing glass, characterized in that, The furnace includes a heating zone for melting solid glass raw materials into liquid glass raw materials. The flow direction of the liquid glass raw materials is defined as a first direction. Along the first direction, multiple heating sections are provided in the heating zone. There are hot spots in the heating zone. The heating sections near the hot spots are filled with a first fuel medium, and the heating sections away from the hot spots are filled with a second fuel medium. The thermal radiation intensity of the first fuel medium is higher than that of the second fuel medium, so as to form a temperature difference in the heating region, thereby generating a reverse circulation in the heating region in the opposite direction to the first direction.
2. The furnace for producing glass according to claim 1, characterized in that, At least six heating elements are provided in the heating area. Along the first direction, the six heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, and a sixth heating element. The hot spot is formed in the heating area near the fifth heating element. The fifth heating section is filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, and the sixth heating section are filled with the second fuel medium.
3. The furnace for producing glass according to claim 1, characterized in that, At least seven heating elements are provided within the heating area. Along the first direction, the seven heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, a sixth heating element, and a seventh heating element. A hot spot is formed within the heating area near the fifth heating element. The fifth heating section is filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, the sixth heating section, and the seventh heating section are filled with the second fuel medium.
4. The furnace for producing glass according to claim 1, characterized in that, At least nine heating elements are provided within the heating area. Along the first direction, the nine heating elements are a first heating element, a second heating element, a third heating element, a fourth heating element, a fifth heating element, a sixth heating element, a seventh heating element, an eighth heating element, and a ninth heating element. Hot spots are formed within the heating area near the sixth heating element and the seventh heating element. The sixth heating section and the seventh heating section are filled with the first fuel medium, and the first heating section, the second heating section, the third heating section, the fourth heating section, the fifth heating section, the eighth heating section and the ninth heating section are filled with the second fuel medium.
5. The furnace for producing glass according to claim 1, characterized in that, The number N1 of heating elements filled with the first fuel medium and the number N2 of heating elements filled with the second fuel medium satisfy the following condition: 14% ≤ N1 / N2 ≤ 20%.
6. The furnace for producing glass according to claim 1, characterized in that, The thermal radiation intensity T1 of the first fuel medium satisfies: 1550℃≤T1≤1590℃, and the thermal radiation intensity T2 of the second fuel medium satisfies: 1350℃≤T2≤1440℃.
7. The furnace for producing glass according to claim 1, characterized in that, The flame nozzle of the heating section filled with the first fuel medium is located on the side close to the liquid glass raw material, and the flame nozzle of the heating section filled with the second fuel medium is located on the side.
8. The furnace for producing glass according to claim 1, characterized in that, The kiln also includes a cooling zone for condensing liquid glass raw materials into flat glass. Along the first direction, the cooling zone is located downstream of the heating zone, and a blocking part is provided between the cooling zone and the heating zone.
9. The furnace for producing glass according to claim 8, characterized in that, The distance between the blocking part and the liquid glass raw material corresponds to the thickness of the flat glass.
10. A glass heating system, characterized in that, Includes the furnace for producing glass as described in any one of claims 1 to 9.