Flue gas pipeline structure of substrate glass high-temperature smelting furnace

Abstract

The utility model discloses a flue gas pipeline structure of a substrate glass high-temperature smelting furnace, which relates to the technical field of substrate glass production and comprises a smelting furnace, a flue gas cooling box, a high-temperature air supplement machine, an air conveying pipe group and a flue gas conveying pipe group, and the temperature of the flue gas can be monitored in real time, the high-temperature air supplementing machine can blow normal-temperature air into the flue gas cooling box, and the air conveying pipe set can manually or electrically control the inlet amount of the normal-temperature air in unit time. According to the flue gas pipeline structure of the substrate glass high-temperature smelting furnace, high-temperature flue gas is cooled by introducing normal-temperature air, and the flue gas pipeline structure is provided with a temperature detection component for real-time monitoring. If the temperature of the cooled flue gas is still high, the opening degree of the air inlet valve can be adjusted, the air amount is increased, the flue gas temperature meets the requirements of a treatment system, and efficient cooling and environment-friendly emission are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of substrate glass production, and particularly relates to a flue gas pipeline structure of a high-temperature furnace for substrate glass. Background Technique

[0002] In the production process of glass substrates, the mixed raw materials of glass need to be melted in a high-temperature furnace to form high-quality glass substrates. In this process, the high-temperature combustion reaction in the furnace will generate a large amount of flue gas containing various pollutants, such as nitrogen oxides (NOx), sulfur oxides (SOx), and dust. These flue gases not only pose a serious threat to the environment but also may have adverse effects on human health. Therefore, effectively treating the flue gas from the furnace and reducing its pollutant emissions is an important issue that glass production enterprises must face.

[0003] However, a remarkable characteristic of the furnace flue gas is its extremely high temperature, which can usually reach 700°C - 800°C, or even higher. When such high-temperature flue gas is directly introduced into the flue gas treatment system, a series of technical problems will be faced. Among them, the most critical one is that the high-temperature environment will significantly reduce the activity of the enzyme catalyst in the flue gas treatment system. The enzyme catalyst is a key material in the purification processes such as flue gas denitrification and desulfurization, and its activity directly determines the efficiency and effect of flue gas treatment. Once the catalyst activity decreases, it will directly lead to the failure of the flue gas treatment effect to meet the standards and cannot meet the requirements of environmental protection regulations. Therefore, it is necessary to cool the high-temperature flue gas until it meets the requirements of the flue gas treatment system before introducing it into the flue gas treatment system. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides a flue gas pipeline structure of a high-temperature furnace for substrate glass, which solves the problems raised in the above background technique.

[0005] To achieve the above purposes, the utility model is realized through the following technical solutions: A flue gas pipeline structure of a high-temperature furnace for substrate glass, including a furnace and a flue gas main pipeline support, further includes:

[0006] A flue gas cooling box, which is a collecting container for heat exchange between high-temperature flue gas and normal-temperature air and can monitor the temperature of the flue gas in real time;

[0007] A high-temperature air supply fan, which can blow normal-temperature air into the flue gas cooling box;

[0008] An air delivery pipe group, which is connected between the flue gas cooling box and the high-temperature air supply fan and can deliver normal-temperature air. The air delivery pipe group can manually or electrically control the intake amount of normal-temperature air per unit time;

[0009] A flue gas conveying pipe group, which is connected to a flue gas cooling box and can discharge the cooled flue gas.

[0010] Furthermore, a flue gas outlet is reserved at the top of the flue gas cooling box, an air inlet is reserved on one side, and a flue gas inlet is reserved on the other side.

[0011] Furthermore, a temperature detection component is installed on the side of the flue gas cooling box. The temperature detection component is a thermocouple temperature sensor, and the detection end of the thermocouple temperature sensor is located inside the flue gas cooling box.

[0012] Furthermore, two high-temperature supply fans are provided, and any one of them can be enabled.

[0013] Furthermore, the air conveying pipe group includes a tee pipe. The two air inlets of the tee pipe are correspondingly connected to the air outlets of two high-temperature supply fans. The air outlet of the tee pipe is connected to an air delivery pipe, and a regulating valve is serially installed in the air delivery pipe. The regulating valve is a manual regulating valve or an electric regulating valve.

[0014] Furthermore, the flue gas conveying pipe group includes a first pipe and a second pipe connected in series. An expansion joint is serially installed in the first pipe, and multiple inspection and cleaning positions are provided on the second pipe.

[0015] The present utility model provides a flue gas pipeline structure for a high-temperature melting furnace of substrate glass. Compared with the prior art, it has the following beneficial effects:

[0016] In the process of inputting flue gas into the flue gas treatment system, the flue gas pipeline structure for the high-temperature melting furnace of substrate glass can cool the high-temperature flue gas by introducing normal-temperature air into the high-temperature flue gas. During the cooling process, a temperature detection component is also equipped to monitor the temperature of the flue gas in real time. If the temperature of the cooled flue gas is higher than the set value, the opening degree of the regulating valve can be controlled to increase the air intake volume per unit time, so as to achieve the purpose that the flue gas temperature meets the requirements of the flue gas treatment system, and realize efficient cooling and environmental protection emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic structural diagram of the flue gas cooling box in the present utility model;

[0019] Figure 3 is a schematic structural diagram of the air conveying pipe group in the present utility model;

[0020] Figure 4 is a schematic structural diagram of the flue gas conveying pipe group in the present utility model.

[0021] In the figure: 1, melting furnace; 2, support for the main flue gas pipeline; 3, flue gas cooling box; 31, flue gas outlet; 32, air inlet; 33, flue gas inlet; 34, temperature detection component; 4, high-temperature make-up air blower; 5, air delivery pipe group; 51, tee; 52, gas delivery pipe; 53, regulating valve; 6, flue gas delivery pipe group; 61, first pipe; 62, second pipe; 63, expansion joint; 64, maintenance and cleaning position. Specific implementation mode

[0022] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0023] Please refer to Figures 1-4 , the present invention provides a technical solution: a high-temperature melting furnace flue gas pipeline structure for substrate glass, which is composed of a melting furnace 1, a main flue gas pipeline support 2, a flue gas cooling box 3, a high-temperature make-up air blower 4, an air delivery pipe group 5 and a flue gas delivery pipe group 6. Among them, the high-temperature make-up air blower 4 and the flue gas delivery pipe group 6 are both installed on the main flue gas pipeline support 2. A flue gas outlet 31 is reserved at the top of the flue gas cooling box 3, an air inlet 32 is reserved on one side, and a flue gas inlet 33 is reserved on the other side. The air delivery pipe group 5 includes a tee 51, and the air outlet of the tee 51 is connected to a gas delivery pipe 52. The flue gas delivery pipe group 6 includes a first pipe 61 and a second pipe 62 connected in series. Specifically, the flue gas inlet 33 is connected to the flue gas outlet of the melting furnace 1, the air inlet 32 is connected to the gas delivery pipe 52, and the flue gas outlet 31 is connected to the second pipe 62;

[0024] In addition, two high-temperature make-up air blowers 4 are provided (one for standby). The air outlets of the two high-temperature make-up air blowers 4 are respectively connected to the two air inlets of the tee 51, and valves are installed at the connection points. In this way, after one of the high-temperature make-up air blowers 4 fails and cannot be used, the other high-temperature make-up air blower 4 can be started, and the above valves can be opened and closed;

[0025] A temperature detection component 34 is installed on the side of the flue gas cooling box 3. The temperature detection component 34 is a thermocouple temperature sensor. The detection end of the thermocouple temperature sensor is located inside the flue gas cooling box 3. A regulating valve 53 is installed in series in the gas transmission pipe 52. The regulating valve 53 is a manual regulating valve or an electric regulating valve. During use, the thermocouple temperature sensor continuously detects the internal flue gas temperature of the flue gas cooling box 3. If it detects that the flue gas temperature is higher than the preset value, the thermocouple temperature sensor will transmit this signal to the background management system. If the regulating valve 53 is a manual regulating valve, the opening degree of the regulating valve 53 (that is, the air intake volume per unit time) needs to be adjusted manually. Then the background management system will notify the staff to go and adjust it. If an electric regulating valve is used, the background management system will actively adjust the opening degree of the electric regulating valve, and there is no need for the staff to go to the site for adjustment, which improves the efficiency and reduces unnecessary cumbersome operations;

[0026] Finally, an expansion joint 63 is installed in series in the first pipe 61, and a plurality of maintenance and cleaning positions 64 are arranged on the second pipe 62. The expansion joint 63 is for facilitating adjustment and installation during pipe connection. The plurality of maintenance and cleaning positions 64 are composed of maintenance openings and flange plates. When the pipe needs to be maintained or cleaned, the flange plate is opened to expose the maintenance opening, and the staff can perform corresponding operations.

Claims

1. A flue gas duct structure for a substrate glass high-temperature melting furnace, comprising a melting furnace (1) and a flue gas main duct support (2), characterized in that: Also includes: A flue gas cooling box (3), the flue gas cooling box (3) being a collection container for heat exchange between high-temperature flue gas and normal-temperature air, and capable of monitoring the temperature of the flue gas in real time; A high-temperature air supply fan (4), wherein the high-temperature air supply fan (4) is capable of blowing normal-temperature air into the flue gas cooling box (3); An air delivery pipe group (5), the air delivery pipe group (5) is connected between the smoke cooling box (3) and the high-temperature air supply fan (4), and is capable of delivering normal-temperature air. The air delivery pipe group (5) is capable of manually or electrically controlling the amount of normal-temperature air entering per unit time; A smoke conveying pipe group (6) is connected to the smoke cooling box (3) and can discharge the smoke after cooling.

2. The fume duct structure of a substrate glass high temperature melting furnace according to claim 1, characterized in that: The top of the flue gas cooling box (3) is reserved for a flue gas outlet (31), one side is reserved for an air inlet (32), and the other side is reserved for a flue gas inlet (33).

3. The fume duct structure of a substrate glass high temperature melting furnace according to claim 2, characterized in that: A temperature detection component (34) is also installed on the side of the flue gas cooling box (3). The temperature detection component (34) is a thermocouple temperature sensor. The detection end of the thermocouple temperature sensor is located inside the flue gas cooling box (3).

4. The fume duct structure of a substrate glass high temperature melting furnace according to claim 1, characterized in that: A total of two high-temperature air supply fans (4) are provided, and any one of them can be activated.

5. The fume duct structure of a substrate glass high temperature melting furnace according to claim 1, characterized in that: The air delivery pipe group (5) comprises a three-way pipe (51), the two air inlets of the three-way pipe (51) are connected to the air outlets of the two high-temperature air supply fans (4) respectively, the air outlet of the three-way pipe (51) is connected to an air supply pipe (52), a regulating valve (53) is installed in series in the air supply pipe (52), and the regulating valve (53) is a manual regulating valve or an electric regulating valve.

6. The fume duct structure of a substrate glass high temperature melting furnace according to claim 1, characterized in that: The smoke conveying pipe group (6) comprises a first pipe (61) and a second pipe (62) connected in series, an expansion joint (63) is installed in series in the first pipe (61), and a plurality of maintenance and cleaning positions (64) are arranged on the second pipe (62).

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