Glass melting system

Abstract

The invention discloses a glass melting system, belongs to the technical field of glass melting furnace production, and aims to solve the problems of high construction cost and large occupied area caused by the fact that each glass furnace production line is provided with a smoke exhaust chimney in the prior art. The glass melting system comprises a smoke exhaust chimney, a glass melting furnace and a heat storage chamber, the heat storage chamber is arranged on the outer wall of the glass melting furnace and located at the furnace head of the glass melting furnace, a smoke outlet of the glass melting furnace is connected with a smoke inlet of the heat storage chamber, and the smoke outlet of the heat storage chamber is connected with the smoke exhaust chimney through the induced draft fan. The number of the glass melting furnaces and the number of the heat storage chambers are multiple, the glass melting furnaces correspond to the heat storage chambers one to one, and one smoke discharging chimney corresponds to the multiple glass melting furnaces. The method can be used for glass melting.

Description

Technical Field

[0001] The invention belongs to the technical field of glass melting furnace production, and in particular relates to a glass melting system. Background Art

[0002] Glass melting furnaces use a large amount of natural gas in the production process to help burn and melt glass, which will produce a large amount of high-temperature flue gas. The flue gas needs to be led to the exhaust chimney through the flue duct to achieve high-altitude outdoor discharge.

[0003] In the prior art, in a glass furnace production line, the glass melting furnace, the flue gas duct and the smoke exhaust chimney correspond one to one. However, since the height of the smoke exhaust chimney used in the glass furnace production line is usually more than 50m, the project cost is high and the floor space is large. Summary of the invention

[0004] In view of the above analysis, the present invention aims to provide a glass melting system to solve the problem in the prior art that each glass furnace production line is equipped with a smoke exhaust chimney, resulting in high engineering cost and large floor space.

[0005] The purpose of the present invention is mainly achieved through the following technical solutions.

[0006] The present invention provides a glass melting system, comprising a smoke exhaust chimney, a glass melting furnace and a regenerator;

[0007] The regenerator is arranged on the outer wall of the glass melting furnace and located at the kiln head of the glass melting furnace. The smoke outlet of the glass melting furnace is connected to the smoke inlet of the regenerator. The smoke outlet of the regenerator is connected to the smoke exhaust chimney through an induced draft fan.

[0008] The number of the smoke exhaust chimney is one, the number of the glass melting furnaces and the heat storage chambers is multiple, and the glass melting furnaces correspond to the heat storage chambers one by one, and one smoke exhaust chimney corresponds to multiple glass melting furnaces.

[0009] Furthermore, the glass melting system also includes a smoke exhaust pipeline, and the smoke outlet of the heat storage chamber is connected to the smoke exhaust chimney through the smoke exhaust pipeline, and the heat storage chamber and the smoke exhaust pipeline correspond one to one.

[0010] Furthermore, the smoke exhaust pipeline includes an underground flue, a transition flue and a ground flue which are sequentially connected from the glass melting furnace to the smoke exhaust chimney.

[0011] Furthermore, the underground flue and the above-ground flue are arranged in a horizontal direction, and the transition flue is arranged in a vertical direction.

[0012] Furthermore, a flue damper is provided on the underground flue, and the connection or disconnection of the underground flue is controlled by the flue damper.

[0013] Furthermore, the transition flue includes a flue base and a waterproof layer sleeved on the outside of the flue base, and a gap is provided between the waterproof layer and the flue base.

[0014] Furthermore, the glass melting system also includes a desulfurization and denitrification unit and a dust removal unit arranged in sequence from the transition flue to the exhaust chimney, and the flue gas outlet of the transition flue, the desulfurization and denitrification unit, the dust removal unit, and the exhaust chimney are connected in sequence.

[0015] Furthermore, the smoke outlet of the dust removal unit is connected to the ground flue.

[0016] Furthermore, the number of glass melting furnaces is 2 to 4.

[0017] Furthermore, the height of the smoke exhaust chimney is 65-75m, the inner diameter of the bottom of the smoke exhaust chimney is 7.4-7.6m, the outer diameter of the bottom of the smoke exhaust chimney is 7.7-8.0m, and the slope of the outer wall of the smoke exhaust chimney is 1.8-2.3%.

[0018] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0019] A) The glass melting system provided by the present invention combines the smoke exhaust chimneys of multiple glass kiln production lines into one, connects the smoke outlets of multiple glass kilns to one smoke exhaust chimney, and uses one smoke exhaust chimney to achieve smoke emission from multiple glass kilns, thereby optimizing the number of smoke exhaust chimneys. This can not only greatly reduce the engineering cost of glass melting, but also effectively reduce the overall footprint of the equipment, thereby achieving the goal of saving cost and land, and is more conducive to realizing the industrialized production of glass melting.

[0020] B) The glass melting system provided by the present invention is provided with a heat storage chamber, which is arranged on the outer wall of the glass melting furnace and located at the kiln head of the glass melting furnace. The high-temperature flue gas generated by the glass melting furnace can be circulated into the heat storage chamber to preheat the glass at the kiln head of the glass melting furnace, thereby improving the waste heat utilization rate of the above-mentioned glass melting system.

[0021] C) The glass melting system provided by the present invention, on the one hand, can improve the overall waterproofness of the transition flue and reduce the entry of rainwater into the flue matrix by providing a waterproof layer; on the other hand, the gap between the waterproof layer and the flue matrix can serve as a buffer chamber for rainwater. Once the waterproof layer is damaged, a certain amount of rainwater can be accumulated, reducing the amount of water seepage into the flue matrix.

[0022] D) In ​​the glass melting system provided by the present invention, the smoke outlet of the dust removal unit is connected to the ground flue. In this way, a smoke exhaust chimney only needs to be provided with smoke inlets corresponding to the number of glass melting furnaces, and no smoke inlet for the dust removal unit is required, which is more conducive to the structural stability of the smoke exhaust chimney.

[0023] In the present invention, the above-mentioned technical solutions can also be combined with each other to achieve more preferred combination solutions. Other features and advantages of the present invention will be described in the subsequent description, and some advantages can become obvious from the description, or can be understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the embodiments of the description and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are only for the purpose of illustrating particular embodiments and are not to be considered limiting of the present invention. Like reference symbols denote like components throughout the drawings.

[0025] Figure 1 A schematic diagram of the structure of a glass melting system provided in Embodiment 1 of the present invention;

[0026] Figure 2 A schematic diagram of the internal structure of a smoke exhaust chimney in a glass melting system provided in Example 1 of the present invention;

[0027] Figure 3 A schematic diagram of the structure of an above-ground flue in a glass melting system provided in Example 1 of the present invention;

[0028] Figure 4 A schematic structural diagram of a heat exchange unit in a glass melting system provided in Embodiment 1 of the present invention;

[0029] Figure 5a A schematic diagram of the structure of a dust removal and smoke exhaust pipeline in a glass melting system provided in Embodiment 1 of the present invention, wherein the thermal expansion protrusion is not in contact with the contact sensor;

[0030] Figure 5b This is a schematic structural diagram of a dust removal and smoke exhaust pipeline in a glass melting system provided in Example 1 of the present invention, wherein the thermal expansion protrusion is in contact with the contact sensor.

[0031] Reference numerals:

[0032] 1-smoke exhaust chimney; 101-smoke mixing chamber; 102-smoke exhaust sub-chamber; 2-dust removal and smoke exhaust pipeline; 201-contact sensor; 202-smoke circulation inner pipe; 203-temperature adjustment outer pipe; 204-thermal expansion protrusion; 3-glass melting furnace; 4-heat storage chamber; 5-underground flue; 6-transition flue; 7-ground flue; 8-flue gate; 9-desulfurization and denitrification unit; 901-desulfurization tower; 902-denitrification tower; 10-dust removal unit; 11-coolant storage tank; 12-coolant controller; 13-high-temperature flue gas inlet; 14-low-temperature flue gas inlet; 15-low-temperature flue gas outlet; 16-smoke partition wall; 17-regulator; 18-cooling chamber; 19-heat exchange chamber; 20-liquid supply tank; 21-temperature acquisition tester; 22-regulating three-way valve. DETAILED DESCRIPTION

[0033] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0034] Embodiment 1

[0035] This embodiment provides a glass melting system. Figure 1 , including a smoke exhaust chimney 1, a glass melting furnace 3 and a regenerator 4, wherein the regenerator 4 is arranged on the outer wall of the glass melting furnace 3 and located at the kiln head of the glass melting furnace 3, the smoke outlet of the glass melting furnace 3 is connected with the smoke inlet of the regenerator 4, and the smoke outlet of the regenerator 4 is connected with the smoke exhaust chimney 1 through an induced draft fan; in addition, the number of the smoke exhaust chimney 1 is one, the number of the glass melting furnace 3 and the regenerator 4 is multiple, and the glass melting furnace 3 corresponds to the regenerator 4 one by one, and one smoke exhaust chimney 1 corresponds to multiple glass melting furnaces 3.

[0036] Compared with the prior art, the glass melting system provided in this embodiment, on the one hand, merges the smoke exhaust chimneys 1 of multiple glass kiln production lines into one, connects the smoke outlets of multiple glass kilns to one smoke exhaust chimney 1, and uses one smoke exhaust chimney 1 to achieve smoke emission from multiple glass kilns, thereby optimizing the number of smoke exhaust chimneys 1. This can not only greatly reduce the engineering cost of glass melting, but also effectively reduce the overall footprint of the equipment, thereby achieving the goal of saving cost and land, and is more conducive to realizing the industrialized production of glass melting.

[0037] On the other hand, by providing a heat storage chamber 4, the heat storage chamber 4 is provided on the outer wall of the glass melting furnace 3 and is located at the kiln head position of the glass melting furnace 3. The high-temperature flue gas generated by the glass melting furnace 3 can be circulated into the heat storage chamber 4 to preheat the glass at the kiln head position of the glass melting furnace 3, thereby improving the waste heat utilization rate of the above-mentioned glass melting system.

[0038] Exemplarily, from the perspective of spatial layout and glass melting efficiency, the number of the glass melting furnaces 3 is 2 to 4.

[0039] Taking into account that one smoke exhaust chimney 1 needs to realize simultaneous smoke exhaust of multiple glass melting furnaces 3, in order to ensure that the smoke exhaust chimney 1 has sufficient smoke exhaust capacity, illustratively, the above-mentioned smoke exhaust chimney 1 is a concrete structure, the height of the smoke exhaust chimney 1 is 65 to 75 m (for example, 72 m), the inner diameter of the bottom of the smoke exhaust chimney 1 is 7.4 to 7.6 m (for example, 7.5 m), the outer diameter of the bottom of the smoke exhaust chimney 1 is 7.7 to 8.0 m (for example, 7.8 m), and the outer wall slope of the smoke exhaust chimney 1 is 1.8 to 2.3% (for example, 2%).

[0040] Regarding the connection between the various components in the above-mentioned glass melting system, the above-mentioned glass melting system also includes a smoke exhaust pipeline, and the smoke outlet of the heat storage chamber 4 is connected to the smoke exhaust chimney 1 through the smoke exhaust pipeline, and the heat storage chamber 4 corresponds to the smoke exhaust pipeline one by one.

[0041] It should be noted that, considering that the regenerator 4 is located underground, the exhaust pipeline includes an underground flue 5, a transition flue 6 and an above-ground flue 7 which are sequentially connected from the glass melting furnace 3 to the exhaust chimney 1.

[0042] From the perspective of spatial layout, the underground flue 5 and the above-ground flue 7 are arranged in the horizontal direction, and the transition flue 6 is arranged in the vertical direction.

[0043] For example, the shape of the ground flue 7 is an upward arch, see Figure 3 .

[0044] In order to achieve connection or disconnection between each heat storage chamber 4 and the smoke exhaust chimney 1, a flue gate 8 is provided on the underground flue 5. The connection or disconnection of the underground flue 5 is controlled by the flue gate, thereby controlling the connection or disconnection between the heat storage chamber 4 and the smoke exhaust chimney 1.

[0045] Considering that the transition flue 6 needs to be led from underground to the ground, if it rains, rainwater may accumulate on the ground. In order to prevent rainwater from entering the transition flue 6, the structure of the transition flue 6, specifically, includes a flue matrix and a waterproof layer sleeved on the outside of the flue matrix, and there is a gap between the waterproof layer and the flue matrix. In this way, on the one hand, the waterproofness of the transition flue 6 as a whole can be improved by setting the waterproof layer, and rainwater entering the flue matrix can be reduced; on the other hand, the gap between the waterproof layer and the flue matrix can serve as a buffer chamber for rainwater. Once the waterproof layer is damaged, a certain amount of rainwater can be accumulated, reducing the amount of water seepage in the flue matrix.

[0046] It is worth noting that during the glass melting process, the high-temperature flue gas contains both dust and harmful components (e.g., NO x , SO2, etc.), these harmful components will cause air pollution if they are directly discharged into the atmosphere. Therefore, the above-mentioned glass melting system also includes a desulfurization and denitrification unit 9 and a dust removal unit 10 which are arranged in sequence from the transition flue 6 to the smoke exhaust chimney 1. The desulfurization and denitrification unit 9 includes a desulfurization tower 901 and a denitrification tower 902 which are connected in sequence. The flue gas outlet of the transition flue 6, the desulfurization and denitrification unit 9, the dust removal unit 10, and the smoke exhaust chimney 1 are connected in sequence. The high-temperature flue gas discharged from the transition flue 6 is desulfurized and denitrified by the desulfurization and denitrification unit 9, and the dust in the flue gas after desulfurization and denitrification is removed by the dust removal unit 10.

[0047] It is worth noting that since the dust removal unit 10 requires a relatively low temperature of the flue gas, if the flue gas temperature is relatively high, it may cause damage to components in the dust removal unit 10. In order to ensure that the temperature of the flue gas discharged from the desulfurization and denitrification unit 9 is maintained within an appropriate range, the above-mentioned glass melting system also includes a heat exchange unit arranged between the desulfurization and denitrification unit 9 and the dust removal unit 10, and the temperature of the flue gas is regulated by the heat exchange unit.

[0048] Specifically, for the structure of the heat exchange unit, see Figure 4 , which includes a cooling chamber 18, a heat exchange chamber 19, a liquid supply tank 20, a temperature collection and testing instrument 21, a regulating three-way valve 22 and a regulator 17, the regulating three-way valve 22 has a regulating air inlet, a first regulating air outlet and a second regulating air outlet, the cooling chamber 18 has a high-temperature flue gas inlet 13, a low-temperature flue gas inlet 14 and a low-temperature flue gas outlet 15, the high-temperature flue gas inlet 13 is connected to the flue gas outlet of the desulfurization and denitrification unit 9, the low-temperature flue gas outlet 15 is connected to the regulating air inlet, the first regulating air outlet The air port is connected to the flue gas inlet of the dust removal unit 10, the second regulating air outlet is connected to the flue gas inlet of the heat exchange chamber 19, the flue gas outlet of the heat exchange chamber 19 is connected to the low-temperature flue gas inlet 14, the temperature collection tester 21 is arranged at the low-temperature flue gas outlet 15, the liquid outlet of the liquid supply tank 20 is connected to the medium liquid inlet of the heat exchange chamber 19, the medium liquid outlet of the heat exchange chamber 19 is connected to the liquid inlet of the liquid supply tank 20, and the regulator 17 is respectively connected to the temperature collection tester 21 and the regulating three-way valve 22.

[0049] During implementation, the temperature acquisition tester 21 detects the temperature data of the flue gas at the low-temperature flue gas outlet 15 in real time and transmits it to the regulator 17. The regulator 17 receives the temperature data and determines whether the temperature data is higher than a threshold temperature.

[0050] If it is higher than the threshold temperature, it means that the temperature of the flue gas at the low-temperature flue gas outlet 15 is too high and is not suitable for subsequent dust removal treatment. The regulator 17 controls the regulating air inlet to be connected with the second regulating air outlet, and the flue gas discharged from the cooling chamber 18 enters the heat exchange chamber 19 for further cooling. After cooling, it is discharged into the cooling chamber 18 and mixed with the flue gas in the cooling chamber 18 to cool the flue gas in the cooling chamber 18.

[0051] If it is lower than or equal to the threshold temperature, it means that the temperature of the flue gas at the low-temperature flue gas outlet 15 is appropriate and subsequent dust removal treatment can be carried out. The regulator 17 controls the regulating air inlet to be connected with the first regulating air outlet, and the flue gas is directly discharged into the dust removal unit 10 for dust removal treatment.

[0052] Exemplarily, the cooling chamber 18 is cylindrical in shape, and the feeding direction of the high-temperature flue gas inlet 13 and the feeding direction of the low-temperature feed port 14 are both along the tangential direction of the cooling chamber 18, and the feeding directions of the two are rotated by a certain angle in a clockwise or counterclockwise direction, so that the cyclone direction of the flue gas flowing from the high-temperature flue gas inlet 13 into the cooling chamber 18 is the same as the cyclone direction of the flue gas flowing from the low-temperature feed port 14 into the cooling chamber 18, and the cyclone of the flue gas is utilized to achieve uniform mixing of the flue gases of two temperatures without the need for additional disturbance parts, thereby effectively simplifying the structure.

[0053] In order to ensure normal smoke exhaust in the event of failure of the desulfurization and denitrification unit 9 and the dust removal unit 10, since one smoke exhaust chimney 1 needs to be connected to multiple smoke exhaust pipelines, in order to reduce the number of holes on the smoke exhaust chimney 1 and ensure the overall mechanical strength of the smoke exhaust chimney 1, the smoke outlet of the dust removal unit 10 is connected to the ground flue 7. In this way, one smoke exhaust chimney 1 only needs to open a smoke inlet corresponding to the number of three glass melting furnaces, and no smoke inlet for the dust removal unit 10 is required, which is more conducive to the structural stability of the smoke exhaust chimney 1.

[0054] Considering that the temperature range required for subsequent smoke exhaust chimney 1 emissions is lower than the temperature range required by the dust removal unit 10, in order to further cool the flue gas discharged from the dust removal unit 10, the above-mentioned glass melting system also includes a dust removal and smoke exhaust pipeline 2, a coolant storage tank 11 and a coolant controller 12.

[0055] Specifically, the dust removal and smoke exhaust pipeline 2 includes an inner smoke circulation tube 202 and a temperature-regulating outer tube 203 which is sleeved on the outside of the inner smoke circulation tube 202. There is a gap between the inner smoke circulation tube 202 and the temperature-regulating outer tube 203, and the gap serves as a temperature-regulating interlayer, which is connected to the coolant storage tank 11. The outer wall of the inner smoke circulation tube 202 is provided with a thermal expansion protrusion 204, and the inner wall of the temperature-regulating outer tube 203 is provided with a contact sensor 201. The thermal expansion protrusion 204 corresponds to the position of the contact sensor 201, and there is a tiny gap between the top of the thermal expansion protrusion 204 and the contact sensor 201. The coolant controller 12 is connected to the contact sensor 201 and the coolant storage tank 11.

[0056] On the one hand, when the smoke temperature in the dust removal and smoke exhaust pipeline 2 does not exceed the temperature threshold, there is a small gap between the outer ring surface of the thermal expansion protrusion 204 and the contact sensor 201, and the smoke flow inner tube 202 and the temperature regulating outer tube 203 are isolated from the air, so that the temperature regulating interlayer can form air insulation, see Figure 5a .

[0057] On the other hand, when the temperature of the flue gas in the dust removal and smoke exhaust pipeline 2 exceeds the temperature threshold, the heat in the flue gas will be transferred to the thermal expansion protrusion 204, so that the thickness of the thermal expansion protrusion 204 increases, and the top of the thermal expansion protrusion 204 contacts the contact sensor 201. The contact sensor 201 sends an over-temperature signal to the coolant controller 12. The coolant controller 12 controls the coolant storage tank 11 to pass the coolant into the temperature regulating interlayer. The temperature regulating interlayer can directly cool the flue gas through the flue gas circulation inner tube 202. See Figure 5b .

[0058] On the other hand, when the flue gas temperature in the dust removal and smoke exhaust pipeline 2 exceeds the temperature threshold, the thermal expansion protrusions 204 and the contact sensor 201 that are in contact with each other can also serve as heat-conducting structures, so that the heat in the flue gas can diffuse into the external environment, thereby further improving the cooling effect of the flue gas.

[0059] Considering that one smoke exhaust chimney 1 needs to correspond to multiple glass melting furnace 3 production lines, the temperature and composition of the high-temperature flue gas generated by different glass melting furnaces 3 are different, and the directions of the high-temperature flue gas discharged into the smoke exhaust chimney 1 are also different. In order to avoid the confusion of multiple high-temperature flue gases, the above-mentioned glass melting system also includes a smoke partition wall 16 arranged in the smoke exhaust chimney 1. The smoke partition wall 16 is arranged along the axial direction of the smoke exhaust chimney 1. Figure 2 .

[0060] Illustratively, the height of the smoke partition wall 16 is lower than the height of the smoke exhaust chimney 1. Accordingly, the smoke exhaust chimney 1 is divided into a smoke partition chamber provided with the smoke partition wall 16 and a smoke mixing chamber 101 located above the smoke partition chamber. The smoke partition chamber divides the smoke partition wall 16 into multiple smoke exhaust sub-chambers 102, and the smoke exhaust sub-chambers 102 correspond one-to-one to the glass melting furnace 3.

[0061] In this way, on the one hand, by adopting this special structure of the smoke exhaust chimney 1, the lower half of the smoke exhaust chimney 1 can be divided into multiple smoke exhaust sub-chambers 102 through the setting of the smoke partition wall 16, and each smoke exhaust sub-chamber 102 is specifically used for exhausting smoke from a glass melting furnace 3, thereby avoiding the confusion of multiple high-temperature flue gases and ensuring the smoothness of smoke exhaust.

[0062] On the other hand, the setting of the smoke-partition wall 16 will inevitably increase the smoke flow resistance in the smoke exhaust chimney 1. After being guided by multiple smoke exhaust sub-cavities 102, the smoke basically flows upward in the vertical direction. The smoke-mixing chamber 101 does not have a smoke-partition wall 16, which can further reduce the influence of the smoke-partition wall 16 on the smoke flow resistance in the smoke exhaust chimney 1.

[0063] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A glass melting system, characterized in that: Includes smoke exhaust chimney, glass melting furnace and regenerator; The regenerator is arranged on the outer wall of the glass melting furnace and located at the kiln head of the glass melting furnace. The smoke outlet of the glass melting furnace is connected to the smoke inlet of the regenerator. The smoke outlet of the regenerator is connected to the smoke exhaust chimney through an induced draft fan. The number of the smoke exhaust chimney is one, the number of the glass melting furnaces and the heat storage chambers is multiple, and the glass melting furnaces correspond to the heat storage chambers one by one, and one smoke exhaust chimney corresponds to multiple glass melting furnaces.

2. The glass melting system according to claim 1, characterized in that: The glass melting system further comprises a smoke exhaust pipeline, and the smoke outlet of the heat storage chamber is connected to a smoke exhaust chimney through the smoke exhaust pipeline, and the heat storage chamber corresponds to the smoke exhaust pipeline one by one.

3. The glass melting system according to claim 2, characterized in that: The smoke exhaust pipeline comprises an underground flue, a transitional flue and a ground flue which are sequentially connected from the glass melting furnace to the smoke exhaust chimney.

4. The glass melting system according to claim 3, characterized in that: The underground flue and the above-ground flue are arranged in a horizontal direction, and the transition flue is arranged in a vertical direction.

5. The glass melting system according to claim 3, characterized in that: The underground flue is provided with a flue damper, and the connection or disconnection of the underground flue is controlled by the flue damper.

6. The glass melting system according to claim 3, characterized in that: The transition flue comprises a flue base and a waterproof layer sleeved on the outside of the flue base, and a gap is provided between the waterproof layer and the flue base.

7. The glass melting system according to any one of claims 1 to 6, characterized in that: The glass melting system further comprises a desulfurization and denitrification unit and a dust removal unit which are sequentially arranged from the transition flue to the exhaust chimney. The flue gas outlet of the transition flue, the desulfurization and denitrification unit, the dust removal unit and the exhaust chimney are sequentially connected.

8. The glass melting system according to claim 7, wherein: The smoke outlet of the dust removal unit is connected to the ground flue.

9. The glass melting system according to any one of claims 1 to 6, characterized in that: The number of the glass melting furnaces is 2 to 4.

10. The glass melting system according to claim 9, wherein: The height of the smoke exhaust chimney is 65-75m, the inner diameter of the bottom of the smoke exhaust chimney is 7.4-7.6m, the outer diameter of the bottom of the smoke exhaust chimney is 7.7-8.0m, and the slope of the outer wall of the smoke exhaust chimney is 1.8-2.3%.

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