CN219200048U - Glass tank furnace flue gas waste heat recycling system - Google Patents
Glass tank furnace flue gas waste heat recycling system Download PDFInfo
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- CN219200048U CN219200048U CN202223560043.4U CN202223560043U CN219200048U CN 219200048 U CN219200048 U CN 219200048U CN 202223560043 U CN202223560043 U CN 202223560043U CN 219200048 U CN219200048 U CN 219200048U
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Abstract
The utility model discloses a glass tank furnace flue gas waste heat recycling system, which comprises: the glass tank furnace is used for melting high-melting materials and is provided with a high-temperature smoke outlet, a smoke gas type lithium bromide water chilling unit, a smoke gas inlet of the smoke gas type lithium bromide water chilling unit is communicated with the high-temperature smoke gas outlet of the glass tank furnace through a first pipeline, a primary side inlet of the cooling heat exchange device is communicated with a cold water outlet of the smoke gas type lithium bromide water chilling unit through a third pipeline, a primary side outlet of the cooling heat exchange device is communicated with a cold water inlet of the smoke gas type lithium bromide water chilling unit through a fourth pipeline, and a secondary side inlet of the cooling heat exchange device is communicated with the smoke gas outlet of the smoke gas type lithium bromide water chilling unit through a second pipeline and is used for cooling high-temperature smoke gas by using cooling water of the smoke gas type lithium bromide water chilling unit; the utility model has the advantages of simplicity, convenient construction and low cost; and the long-term stability of the operation of the cooling heat exchange system is improved, the residual heat and energy of the flue gas are fully utilized, and the energy utilization efficiency and the economy of the flue gas treatment process of the glass tank furnace are greatly improved.
Description
Technical Field
The utility model belongs to the field of waste heat recovery, and particularly relates to a glass tank furnace flue gas waste heat recovery and utilization system.
Background
In the liquid crystal glass manufacturing enterprises, each hot end production line is provided with a glass melting tank furnace, and the glass melting tank furnace is mainly used for heating in a glass melting process, and electric heating and flame heating are combined. The electrode installed at the side of the tank furnace makes current flow through the high-temperature glass liquid to generate heat, and natural gas and oxygen are mixed and burnt for surface heating. The flue gas generated after the natural gas in the glass tank furnace is combusted is discharged through a flue gas discharge system after multiple treatments such as denitration, cooling heat exchange, spraying dust removal and the like.
For a long time, the main concern of liquid crystal glass manufacturing enterprises is the problems of the stability of the combustion of a glass tank furnace, whether the flue gas denitration is sufficient, how to prevent the blockage of a heat exchanger and a flue, and the like. Through years of exploration, liquid crystal glass manufacturing enterprises have adopted SCR flue gas denitration and spray dust removal devices to perform denitration, cooling and dust removal purification on high-temperature flue gas, and have good anti-blocking effects. However, the cooling heat exchange process consumes more cooling water, and meanwhile, the problem of unstable cooling effect always exists, and the local temperature or smoke temperature wave of the cooling heat exchanger is large in the long-term operation process of the system, so that the service life of the cooling heat exchanger is greatly shortened.
Disclosure of Invention
The utility model aims to provide a glass tank furnace flue gas waste heat recycling system, which is used for solving the problems of unstable flue gas cooling effect of the glass tank furnace and greatly shortened service life of a cooling heat exchanger.
The utility model adopts the following technical scheme: a glass tank furnace flue gas waste heat recovery system comprising:
a glass tank furnace for melting high-melting point materials, which is provided with a high-temperature flue gas outlet,
the smoke type lithium bromide water chilling unit is provided with a cold water inlet, a cold water outlet, a smoke inlet and a smoke outlet, wherein the smoke inlet is communicated with a high-temperature smoke outlet of the glass tank furnace through a first pipeline,
the cooling heat exchange device is provided with a primary side inlet, a primary side outlet, a secondary side inlet and a secondary side outlet, wherein the primary side inlet is communicated with a cold water outlet of the smoke type lithium bromide cold water unit through a third pipeline, the primary side outlet is communicated with a cold water inlet of the smoke type lithium bromide cold water unit through a fourth pipeline, the secondary side inlet is communicated with a smoke outlet of the smoke type lithium bromide cold water unit through a second pipeline and is used for cooling high-temperature smoke by using cooling water of the smoke type lithium bromide cold water unit,
the spray dust collector has fume inlet, fume outlet, water inlet and water outlet, the fume inlet is communicated with the secondary side outlet of the cooling heat exchanger, the fume outlet is communicated with outside, the water outlet is communicated with the water tank via the fifth pipeline, and the water inlet is communicated with the water tank via the sixth pipeline.
Further, a fifth valve and a ninth valve are arranged on the fifth pipeline, the fifth pipeline is also communicated with a primary side inlet of the cooling heat exchange device through a seventh pipeline, the seventh pipeline is positioned between the fifth valve and the ninth valve, and the fourth pipeline is communicated with the water tank through an eighth pipeline; the ninth valve is arranged close to the water tank, and the communication part of the eighth pipeline and the fifth pipeline is positioned between the ninth valve and the water tank.
Further, a flue gas denitration device is arranged between the glass tank furnace and the flue gas type lithium bromide water chilling unit, and the flue gas denitration device is used for carrying out denitration and desulfurization treatment on high-temperature flue gas.
Further, a first electric flue valve is arranged on the first pipeline, the first pipeline is communicated with the second pipeline, a second electric flue valve is arranged on the communicating pipeline, a third valve is arranged on the third pipeline, a fourth valve is arranged on the fourth pipeline, a sixth valve is arranged on the sixth pipeline, a seventh valve is arranged on the seventh pipeline, an eighth valve is arranged on the eighth pipeline,
wherein, when the smoke type lithium bromide water chilling unit utilizes the waste heat of high-temperature smoke, the second electric flue valve, the seventh valve and the eighth valve are in a closed state, and the other valves are in an open state, so that the smoke type lithium bromide water chilling unit utilizes the waste heat of the high-temperature smoke to generate cooling water and transmits the cooling water to the cooling heat exchange device,
when the smoke type lithium bromide water chilling unit does not utilize the waste heat of high-temperature smoke, the first electric flue valve and the ninth valve are in a closed state, and the other valves are in an open state, so that the water tank provides cooling water for the cooling heat exchange device to cool the high-temperature smoke, the cooling water sequentially passes through the fifth pipeline, the eighth pipeline and the fourth pipeline to enter the cooling heat exchange device, and after heat exchange, the cooling water sequentially passes through the third pipeline and the seventh pipeline to enter the spraying dust removal device, and then returns to the water tank through the sixth pipeline.
The beneficial effects of the utility model are as follows: the utility model can realize that the flue gas of the glass tank furnace drives the lithium bromide water chiller to produce cold water to replace cooling circulating water to reduce the flue gas temperature through the cooling heat exchanger, and solves the problems of unstable flue gas cooling effect of the glass tank furnace and greatly shortened service life of the cooling heat exchanger; the utility model has the advantages of simplicity, convenient construction and low cost; and the long-term stability of the operation of the cooling heat exchange system is improved, the residual heat and energy of the flue gas are fully utilized, and the energy utilization efficiency and the economy of the flue gas treatment process of the glass tank furnace are greatly improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Wherein: 1. a glass tank furnace; 2. a flue gas denitration device; 3. cooling the heat exchange device; 4. a spray dust collector; 5. a smoke type lithium bromide water chiller; 6. a water tank; 7. a first pipe; 8. a second pipe; 9. a third conduit; 10. a fourth conduit; 11. a fifth pipe; 12. a sixth conduit; 13. a seventh pipe; 14. an eighth conduit; 15. a first electrically powered flue valve; 16. and a second electrically operated flue valve.
Detailed Description
The utility model will be described in detail below with reference to the drawings and the detailed description.
The utility model discloses a glass tank furnace flue gas waste heat recycling system, which is shown in figure 1 and comprises a glass tank furnace 1, a flue gas type lithium bromide water chilling unit 5, a cooling heat exchange device 3 and a spray dust removal device 4.
The glass tank furnace 1 is used for melting high-melting-point materials, so that high-temperature smoke can be generated under the annual working state of the glass tank furnace 1, the glass tank furnace 1 is provided with a high-temperature smoke outlet, the smoke type lithium bromide water chilling unit 5 is provided with a cold water inlet, a cold water outlet, a smoke inlet and a smoke outlet, and the smoke inlet of the smoke type lithium bromide water chilling unit 5 is communicated with the high-temperature smoke outlet of the glass tank furnace 1 through a first pipeline 7.
The cooling heat exchange device 3 is provided with a primary side inlet, a primary side outlet, a secondary side inlet and a secondary side outlet, the primary side inlet of the cooling heat exchange device 3 is communicated with a cold water outlet of the flue gas type lithium bromide cold water unit 5 through a third pipeline 9, the primary side outlet of the cooling heat exchange device 3 is communicated with a cold water inlet of the flue gas type lithium bromide cold water unit 5 through a fourth pipeline 10, the secondary side inlet of the cooling heat exchange device 3 is communicated with a flue gas outlet of the flue gas type lithium bromide cold water unit 5 through a second pipeline 8, and the cooling heat exchange device 3 is used for cooling high-temperature flue gas by using cooling water of the flue gas type lithium bromide cold water unit 5.
The spray dust collector 4 is provided with a flue gas inlet, a flue gas outlet, a water inlet and a water outlet, the flue gas inlet of the spray dust collector 4 is communicated with the secondary side outlet of the cooling heat exchange device 3, the flue gas outlet of the spray dust collector 4 is communicated with the outside, the water outlet of the spray dust collector 4 is communicated with the water tank 6 through a fifth pipeline 11, and the water inlet of the spray dust collector 4 is communicated with the water tank 6 through a sixth pipeline 12.
The fifth pipeline 11 is provided with a fifth valve and a ninth valve, the fifth pipeline 11 is also communicated with a primary side inlet of the cooling heat exchange device 3 through a seventh pipeline 13, the seventh pipeline 13 is positioned between the fifth valve and the ninth valve, and the fourth pipeline 10 is communicated with the water tank 6 through an eighth pipeline 14. The ninth valve is arranged close to the water tank 6, and the communication between the eighth conduit 14 and the fifth conduit 11 is located between the ninth valve and the water tank 6.
A flue gas denitration device 2 is arranged between the glass tank furnace 1 and the flue gas type lithium bromide water chilling unit 5, and the flue gas denitration device 2 is used for carrying out denitration and desulfurization treatment on high-temperature flue gas.
The first pipeline 7 is provided with a first electric flue valve 15, the first pipeline 7 is communicated with the second pipeline 8, the communication pipeline is provided with a second electric flue valve 16, the third pipeline 9 is provided with a third valve, the fourth pipeline 10 is provided with a fourth valve, the sixth pipeline 12 is provided with a sixth valve, the seventh pipeline 13 is provided with a seventh valve, and the eighth pipeline 14 is provided with an eighth valve.
When the smoke type lithium bromide water chilling unit 5 utilizes the waste heat of high-temperature smoke, the second electric flue valve 16, the seventh valve and the eighth valve are in a closed state, and other valves are in an open state, so that the smoke type lithium bromide water chilling unit 5 utilizes the waste heat of the high-temperature smoke to generate cooling water and conveys the cooling water to the cooling heat exchange device 3 to cool the high-temperature smoke.
When the smoke type lithium bromide water chilling unit 5 does not utilize the waste heat of high-temperature smoke, the first electric flue valve 15 and the ninth valve are in a closed state, and the other valves are in an open state, so that the water tank 6 provides cooling water for the cooling heat exchange device 3 to cool the high-temperature smoke, the cooling water sequentially passes through the fifth pipeline 11, the eighth pipeline 14 and the fourth pipeline 10 to enter the cooling heat exchange device 3, and sequentially passes through the third pipeline 9 and the seventh pipeline 13 to enter the spray dust removal device 4 after heat exchange, and then returns to the water tank 6 through the sixth pipeline 12.
Because the flue gas discharged by the glass tank furnace 1 contains a large amount of waste heat, the utility model takes into consideration that the flue gas waste heat is used for producing cold water to replace cooling circulating water and flue gas for heat exchange, on one hand, the full utilization of the flue gas waste heat is realized, the circulating flow of the cold water is reduced, the energy-saving and environment-friendly benefits are good, on the other hand, the running stability of a cooling heat exchange system is improved, and the service life of a cooling heat exchanger is greatly prolonged.
Under the working condition of flue gas waste heat recovery:
the smoke type lithium bromide water chilling unit 5 utilizes smoke generated by the glass tank furnace 1 to produce cold water, and the cold water is conveyed to the cooling heat exchange device 3 to cool the utilized smoke; and the cooling circulating water in the water tank 6 is conveyed to the spray dust collector 4 for spraying, so that the flue gas is further cooled while impurities such as boron oxide in the flue gas are removed.
Under the condition that the waste heat of the flue gas is not recovered:
when the smoke type lithium bromide water chilling unit 5 does not need to utilize the waste heat of high-temperature smoke, the first electric flue valve 15 and the ninth valve are in a closed state, and the other valves are in an open state, so that the water tank 6 provides cooling water for the cooling heat exchange device 3 to cool the high-temperature smoke, the cooling water sequentially passes through the fifth pipeline 11, the eighth pipeline 14 and the fourth pipeline 10 to enter the cooling heat exchange device 3, and sequentially passes through the third pipeline 9 and the seventh pipeline 13 to enter the spray dust removal device 4 after heat exchange, and then returns to the water tank 6 through the sixth pipeline 12.
According to the utility model, the smoke gas of the glass tank furnace 1 drives the smoke gas type lithium bromide water chilling unit 5 to produce cold water to replace cooling circulating water, and the smoke gas temperature is reduced through the cooling heat exchanger, so that the problems of unstable smoke gas cooling effect of the glass tank furnace 1 and greatly shortened service life of the cooling heat exchanger are solved; the utility model has the advantages of simplicity, convenient construction and low cost; and the long-term stability of the operation of the cooling heat exchange system is improved, the residual heat and energy of the flue gas are fully utilized, and the energy utilization efficiency and the economy of the flue gas treatment process of the glass tank furnace 1 are greatly improved.
The foregoing is only illustrative of the present utility model and is not to be construed as limiting thereof, but rather as various modifications, equivalent arrangements, improvements, etc., within the spirit and principles of the present utility model.
Claims (4)
1. The utility model provides a glass tank furnace flue gas waste heat recovery utilizes system which characterized in that includes:
a glass tank furnace (1) for melting high-melting-point materials, which is provided with a high-temperature flue gas outlet,
a smoke type lithium bromide water chilling unit (5) which is provided with a cold water inlet, a cold water outlet, a smoke inlet and a smoke outlet, wherein the smoke inlet is communicated with a high-temperature smoke outlet of the glass tank furnace (1) through a first pipeline (7),
the cooling heat exchange device (3) is provided with a primary side inlet, a primary side outlet, a secondary side inlet and a secondary side outlet, wherein the primary side inlet is communicated with a cold water outlet of the smoke type lithium bromide cold water unit (5) through a third pipeline (9), the primary side outlet is communicated with a cold water inlet of the smoke type lithium bromide cold water unit (5) through a fourth pipeline (10), the secondary side inlet is communicated with a smoke outlet of the smoke type lithium bromide cold water unit (5) through a second pipeline (8) and is used for cooling high-temperature smoke by using cooling water of the smoke type lithium bromide cold water unit (5),
the spray dust collector (4) is provided with a flue gas inlet, a flue gas outlet, a water inlet and a water outlet, wherein the flue gas inlet is communicated with a secondary side outlet of the cooling heat exchange device (3), the flue gas outlet is communicated with the outside, the water outlet is communicated with the water tank (6) through a fifth pipeline (11), and the water inlet is communicated with the water tank (6) through a sixth pipeline (12).
2. A glass tank furnace flue gas waste heat recycling system according to claim 1, wherein a fifth valve and a ninth valve are arranged on the fifth pipeline (11), the fifth pipeline (11) is also communicated with a primary side inlet of the cooling heat exchange device (3) through a seventh pipeline (13), the seventh pipeline (13) is positioned between the fifth valve and the ninth valve, and the fourth pipeline (10) is communicated with the water tank (6) through an eighth pipeline (14); the ninth valve is arranged close to the water tank (6), and the communication position of the eighth pipeline (14) and the fifth pipeline (11) is located between the ninth valve and the water tank (6).
3. The glass tank furnace flue gas waste heat recycling system according to claim 1, wherein a flue gas denitration device (2) is arranged between the glass tank furnace (1) and a flue gas type lithium bromide water chilling unit (5), and the flue gas denitration device (2) is used for carrying out denitration and desulfurization treatment on high-temperature flue gas.
4. The glass tank furnace flue gas waste heat recycling system according to claim 2, wherein a first electric flue valve (15) is arranged on the first pipeline (7), the first pipeline (7) is communicated with the second pipeline (8), a second electric flue valve (16) is arranged on the communicating pipeline, a third valve is arranged on the third pipeline (9), a fourth valve is arranged on the fourth pipeline (10), a sixth valve is arranged on the sixth pipeline (12), a seventh valve is arranged on the seventh pipeline (13), an eighth valve is arranged on the eighth pipeline (14),
wherein when the smoke type lithium bromide water chilling unit (5) utilizes the waste heat of high-temperature smoke, the second electric flue valve (16), the seventh valve and the eighth valve are in a closed state, and other valves are in an open state, so that the smoke type lithium bromide water chilling unit (5) utilizes the waste heat of the high-temperature smoke to generate cooling water and convey the cooling water to the cooling heat exchange device (3),
when the smoke type lithium bromide water chilling unit (5) does not utilize the waste heat of high-temperature smoke, the first electric flue valve (15) and the ninth valve are in a closed state, and other valves are in an open state, so that the water tank (6) provides cooling water for the cooling heat exchange device (3) to cool the high-temperature smoke, the cooling water sequentially passes through the fifth pipeline (11), the eighth pipeline (14) and the fourth pipeline (10) to enter the cooling heat exchange device (3), and sequentially passes through the third pipeline (9) and the seventh pipeline (13) after heat exchange, and then enters the spray dust removal device (4) and returns to the water tank (6) through the sixth pipeline (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223560043.4U CN219200048U (en) | 2022-12-30 | 2022-12-30 | Glass tank furnace flue gas waste heat recycling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223560043.4U CN219200048U (en) | 2022-12-30 | 2022-12-30 | Glass tank furnace flue gas waste heat recycling system |
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| CN219200048U true CN219200048U (en) | 2023-06-16 |
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| CN202223560043.4U Active CN219200048U (en) | 2022-12-30 | 2022-12-30 | Glass tank furnace flue gas waste heat recycling system |
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- 2022-12-30 CN CN202223560043.4U patent/CN219200048U/en active Active
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