A new type of seamless switching glass fiber tank kiln waste gas treatment device

Abstract

The utility model relates to the technical field of waste gas treatment, aims at solving the problem that glass fibre tank kiln waste gas is difficult to give consideration to centralized treatment, equipment maintenance and operation efficiency, and is easy to cause kiln pressure imbalance, treatment interruption and pollutant overproof due to treatment change, provides a new seamless switching type glass fibre tank kiln waste gas treatment device, including waste gas collection, cooling waste heat utilization, waste gas treatment and control unit, and the collection unit contains kiln main body waste gas export, not less than three wire drawing operation passage waste gas export and first heat preservation pipeline, the cooling unit is equipped with not less than two sets of cuttable flue gas waste heat boiler, and kiln waste gas is connected through second heat preservation pipeline, the treatment unit is equipped with not less than two sets of parallel treatment equipment, and is communicated with boiler output end, the control unit contains each key place electric control gate valve, and the gate valve is connected controller, the utility model has the beneficial effect that waste gas can be centralized treatment and zero emission, and double equipment switching guarantees treatment not to be interrupted during maintenance, gives consideration to operation efficiency, and also can accurate control pressure, recovers waste heat.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and more specifically, to a novel seamless switching type waste gas treatment device for fiberglass tank kilns. Background Technology

[0002] Currently, the fiberglass industry is developing rapidly, with an annual production capacity exceeding 6 million tons and exports of nearly 2 million tons, placing it in a world-leading position; however, the industry is characterized by being labor-intensive, capital-intensive, and energy-intensive.

[0003] As fiberglass furnaces become increasingly large-scale, the combustion of natural gas with pure oxygen and the characteristics of mineral powders inevitably produce polluting waste gas containing nitrogen oxides, sulfur dioxide, and particulate matter. While the industry currently employs technologies such as bag filters and electrostatic precipitators, and the emerging "metal filter bag dust-nitrification integration" technology can achieve co-treatment of dust and nitrification, fiberglass furnaces require 24 / 7 continuous production, resulting in continuous waste gas emissions and numerous emission outlets (including the furnace body and multiple drawing operation pathways). This presents challenges for centralized waste gas treatment and equipment maintenance. More importantly, fiberglass furnace production requires maintaining an internal pressure of 15±10 Pa. Excessive pressure can draw in cold air, affecting the melting atmosphere and causing high-temperature refractory materials to crack, while excessive pressure can cause fluctuations in the molten glass and flame erosion of the refractory materials. Therefore, how to centrally treat waste gas, ensure equipment maintenance, and prevent fluctuations in waste gas treatment from affecting kiln pressure stability and operational efficiency has become a pressing issue for the industry. Utility Model Content

[0004] The present invention aims to provide a novel seamless switching fiberglass tank kiln exhaust gas treatment device to solve the problems in the prior art, such as difficulty in centrally treating fiberglass tank kiln exhaust gas, low equipment maintenance and operation efficiency, easy kiln pressure imbalance due to changes in exhaust gas treatment, easy interruption of exhaust gas treatment, and excessive pollutant emissions.

[0005] The embodiments of this utility model are implemented as follows: This utility model provides a novel seamless switching fiberglass tank kiln exhaust gas treatment device, which includes an exhaust gas collection unit, a cooling waste heat utilization unit, an exhaust gas treatment unit, and a control unit. The aforementioned waste gas collection unit includes a waste gas outlet for the main kiln body, at least three waste gas outlets for the wire drawing operation passage, and a first insulated pipe connecting each waste gas outlet to the cooling waste heat utilization unit. The aforementioned cooling waste heat utilization unit has no less than two sets of flue gas waste heat boilers that can be cut off from each other, and the exhaust gas outlet of the aforementioned kiln body is connected to the input end of the two sets of flue gas waste heat boilers through a second insulation pipe. The aforementioned waste gas treatment unit has no less than two sets of parallel waste gas treatment equipment, and the input end of the aforementioned waste gas treatment equipment is connected to the output end of the aforementioned flue gas waste heat boiler. The control unit includes electrically controlled gate valves installed at each exhaust gas outlet, the connecting pipeline of the aforementioned flue gas waste heat boiler, and the inlet and outlet of the exhaust gas treatment equipment. The aforementioned electrically controlled gate valves are electrically connected to the controller.

[0006] This embodiment discloses a novel seamless switching fiberglass kiln exhaust gas treatment device. It employs an exhaust gas collection unit, a cooling and waste heat recovery unit, an exhaust gas treatment unit, and a control unit. The exhaust gas collection unit achieves centralized convergence of exhaust gases from the kiln body and multiple pathways. It also relies on two sets of switchable flue gas waste heat boilers to cool high-temperature exhaust gases and recover waste heat. Combined with two sets of parallel exhaust gas treatment equipment adapted to efficient treatment processes, and with the control unit's electrically controlled gate valves enabling independent on / off switching of each stage and seamless equipment switching, this device ensures continuous exhaust gas treatment and compliant pollutant emissions while meeting equipment maintenance needs. Therefore, this novel seamless switching fiberglass kiln exhaust gas treatment device offers the following advantages: centralized treatment of multi-source exhaust gases and zero pollutant emissions; uninterrupted treatment during maintenance through dual-equipment switching; high efficiency in equipment maintenance and operation; and precise pressure control and waste heat recovery.

[0007] Optionally: The exhaust outlet of the above-mentioned kiln body is connected to the kiln body, and the kiln body is connected to the first wire drawing operation passage, the second wire drawing operation passage, the third wire drawing operation passage and the fourth wire drawing operation passage; The first wire drawing operation passage, the second wire drawing operation passage, the third wire drawing operation passage, and the fourth wire drawing operation passage are respectively provided with a first exhaust gas emission point, a second exhaust gas emission point, a third exhaust gas emission point, and a fourth exhaust gas emission point; The first, second, third, and fourth exhaust gas emission points are all connected to the cooling waste heat utilization unit through the first insulated pipe.

[0008] This configuration facilitates the unified connection of exhaust gas emission points from various pathways to the aforementioned cooling and waste heat utilization unit via the first insulated pipe. This achieves centralized collection and efficient transportation of exhaust gas from multiple emission points, avoiding the low treatment efficiency caused by decentralized emissions. Furthermore, it can seamlessly switch between the two sets of flue gas waste heat boilers and the aforementioned exhaust gas treatment equipment. While ensuring continuous kiln production and stable kiln pressure, it provides a stable source of exhaust gas for subsequent cooling, dust and nitrogen oxide co-treatment, and waste heat recovery, thus balancing environmental compliance and production efficiency.

[0009] Optionally: the first insulated pipe mentioned above has a first exhaust gas inlet, a second exhaust gas inlet, a third exhaust gas inlet, and a fourth exhaust gas inlet; The first exhaust gas inlet point, the second exhaust gas inlet point, the third exhaust gas inlet point, and the fourth exhaust gas inlet point are respectively sealed and connected to the first exhaust gas emission point, the second exhaust gas emission point, the third exhaust gas emission point, and the fourth exhaust gas emission point.

[0010] This setup ensures that the waste gas from multiple pathways is accurately and leak-free into the pipeline, avoiding pollution and energy loss caused by waste gas leakage. It also guarantees the independence and stability of waste gas transportation at each emission point, laying the foundation for subsequent centralized waste gas treatment, equipment switching, and kiln pressure stabilization control, thereby improving the overall environmental friendliness and operational reliability of the system.

[0011] Optionally, the first insulated pipes at the first exhaust gas inlet point, the second exhaust gas inlet point, the third exhaust gas inlet point, and the fourth exhaust gas inlet point are respectively equipped with a first electrically controlled gate valve, a second electrically controlled gate valve, a third electrically controlled gate valve, and a fourth electrically controlled gate valve.

[0012] This configuration allows for flexible adjustment of waste gas delivery based on the production or maintenance needs of a single passage, preventing single-pass malfunctions from affecting the overall system operation. It also helps stabilize the internal pressure of the kiln and each passage, ensuring continuous and compliant waste gas treatment in conjunction with subsequent equipment switching, thereby improving the system's operational flexibility and reliability.

[0013] Optionally: The above-mentioned waste heat boiler has a first waste heat boiler and a second waste heat boiler. The exhaust gas outlet of the kiln body is connected to the air inlet of the first waste heat boiler and the second waste heat boiler through a second insulated pipe. The air inlet of the first waste heat boiler and the second waste heat boiler are respectively provided with a first waste gas flue damper and a second waste gas flue damper. The exhaust outlet of the first waste heat boiler and the second waste heat boiler are both connected to the above-mentioned waste gas treatment unit.

[0014] This configuration achieves dual-path diversion of high-temperature exhaust gas from the kiln body, ensuring the normal operation of the other boiler during maintenance by switching the exhaust gas flue damper, thus avoiding interruption of exhaust gas treatment. It also relies on the dual-boiler structure to stably receive high-temperature exhaust gas and complete cooling and waste heat recovery, providing exhaust gas with suitable temperature for subsequent exhaust gas treatment units, while ensuring stable kiln pressure, thus balancing continuous production and environmental compliance.

[0015] Optionally, the outlet ends of the first waste heat boiler and the second waste heat boiler are respectively equipped with a fifth electrically controlled gate valve and a sixth electrically controlled gate valve.

[0016] This configuration allows for precise control over the flow of waste gas from a single boiler, preventing substandard waste gas from entering subsequent units and improving overall operational reliability.

[0017] Optionally, the above-mentioned waste gas treatment equipment includes a first waste gas treatment machine and a second waste gas treatment machine arranged in parallel, and the outlet ends of the first waste heat boiler and the second waste heat boiler are both connected to the inlet ends of the first waste gas treatment machine and the second waste gas treatment machine.

[0018] This setup ensures continuous and uninterrupted treatment by allowing the other unit to handle all the waste gas during maintenance of a single waste gas treatment unit, while also allowing for flexible adjustment of the operating load of the two units based on the amount of waste gas, ensuring that pollutants are discharged in compliance with standards.

[0019] Optionally: The exhaust ends of the first exhaust gas treatment machine and the second exhaust gas treatment machine are connected in parallel to a centralized exhaust gas emission sealing pipe, and a centralized exhaust gas emission point is opened at one end of the centralized exhaust gas emission sealing pipe.

[0020] This configuration achieves centralized and compliant emission of treated waste gas while preventing its escape. Furthermore, the parallel operation of the first and second waste gas treatment machines ensures continuous and stable emission during the switching of individual machines, thereby enhancing the system's environmental friendliness and operational consistency.

[0021] Optionally, the first and second exhaust gas treatment machines are respectively provided with a seventh electrically controlled gate valve and an eighth electrically controlled gate valve at their inlet ends, and the first and second exhaust gas treatment machines are respectively provided with a ninth electrically controlled gate valve and a tenth electrically controlled gate valve at their outlet ends.

[0022] This configuration allows for quick disconnection of the intake and exhaust paths of a single processor during maintenance, preventing untreated or substandard exhaust gases from affecting the system. It also enables seamless switching with the parallel structure of dual processors, ensuring continuous and compliant exhaust gas treatment. Furthermore, it helps maintain stable system pressure and improves operational reliability.

[0023] Optionally, the inner walls of the first waste heat boiler and the second waste heat boiler are provided with refractory material.

[0024] This design effectively resists the erosion of the boiler's inner wall by the high-temperature exhaust gas from the kiln, extending the boiler's service life. It also reduces heat loss through the boiler wall and improves waste heat recovery efficiency.

[0025] In summary, the novel seamless switching fiberglass kiln exhaust gas treatment device disclosed in this utility model has the beneficial effects of enabling centralized treatment of multi-source exhaust gas and zero emission of pollutants, dual-equipment switching to ensure uninterrupted treatment during maintenance, high equipment maintenance and operation efficiency, and precise pressure control and waste heat recovery. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a schematic diagram of the structure of a novel seamless switching fiberglass kiln exhaust gas treatment device in an embodiment of this utility model. Figure 2 This is a schematic diagram of the kiln body in an embodiment of the present utility model; Figure 3 This is a schematic diagram showing the interconnection of the waste gas collection unit, the cooling waste heat utilization unit, and the waste gas treatment unit in this embodiment of the present invention.

[0028] Icons: 1-Waste gas collection unit, 2-Cooling waste heat utilization unit, 3-Waste gas treatment unit, 5-Waste gas outlet of kiln body, 6-Waste gas outlet of wire drawing operation passage, 7-First insulation pipe, 8-Flue gas waste heat boiler, 9-Second insulation pipe, 10-Waste gas treatment equipment, 11-Electric control gate valve, 12-Kiln body, 13-First wire drawing operation passage, 14-Second wire drawing operation passage, 15-Third wire drawing operation passage, 16-Fourth wire drawing operation passage, 17-First waste gas emission point, 18-Second waste gas emission point, 19-Third waste gas emission point, 20-Fourth waste gas emission point, 21-First waste gas inlet point, 22-Second waste gas inlet point, 23-Third waste gas inlet point, 24-Fourth waste gas inlet point, 25-First 26-Second electric control gate valve, 27-Third electric control gate valve, 28-Fourth electric control gate valve, 29-First waste heat boiler, 30-Second waste heat boiler, 31-First waste gas flue damper, 32-Second waste gas flue damper, 33-Fifth electric control gate valve, 34-Sixth electric control gate valve, 35-First waste gas treatment machine, 36-Second waste gas treatment machine, 37-Centralized waste gas emission sealing pipe, 38-Centralized waste gas emission point, 39-Seventh electric control gate valve, 40-Eighth electric control gate valve, 41-Ninth electric control gate valve, 42-Tenth electric control gate valve, 43-Fifth wire drawing operation passage, 44-Fifth waste gas emission point, 45-Fifth waste gas inlet point, 46-Fifth electric control gate valve. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] Example 1 See Figure 1 , Figure 2 and Figure 3 This embodiment proposes a novel seamless switching fiberglass kiln exhaust gas treatment device, including an exhaust gas collection unit 1, a cooling waste heat utilization unit 2, an exhaust gas treatment unit 3, and a control unit (not shown in the figure). The exhaust gas collection unit 1 includes a kiln main exhaust gas outlet 5, no less than three wire drawing operation passage exhaust gas outlets 6, and a first insulation pipe 7 connecting each exhaust gas outlet to the cooling waste heat utilization unit 2. The cooling waste heat utilization unit 2 has no less than two sets of flue gas waste heat boilers 8 that can be cut off from each other. The exhaust gas outlet 5 of the kiln body is connected to the input end of the two sets of flue gas waste heat boilers 8 through the second insulation pipe 9. The exhaust gas outlet 6 of each wire drawing operation passage is connected to the rear end of the two sets of flue gas waste heat boilers 8 through the first insulation pipe 7. The exhaust gas treatment unit 3 has no less than two sets of parallel exhaust gas treatment equipment 10. The input end of the exhaust gas treatment equipment 10 is connected to the output end of the flue gas waste heat boiler 8 and is adapted to the "metal filter bag dust and nitrification integrated" treatment process. The control unit includes electrically controlled gate valves 11 installed at each exhaust gas outlet, the connecting pipeline of the flue gas waste heat boiler 8, and the inlet and outlet of the exhaust gas treatment equipment 10. The electrically controlled gate valves 11 are electrically connected to the controller (not shown in the figure) and are used to realize the on-off control of each exhaust gas emission point and the seamless switching between the two sets of flue gas waste heat boilers 8 and the two sets of exhaust gas treatment equipment 10.

[0032] This embodiment discloses a novel seamless switching fiberglass kiln exhaust gas treatment device. It employs an exhaust gas collection unit 1, a cooling and waste heat utilization unit 2, an exhaust gas treatment unit 3, and a control unit. The exhaust gas collection unit 1 centrally collects exhaust gases from the kiln body 12 and multiple pathways, while dual switchable flue gas waste heat boilers 8 cool the high-temperature exhaust gas and recover waste heat. Combined with dual parallel exhaust gas treatment devices 10 adapted to efficient treatment processes, and an electrically controlled gate valve 11 in the control unit, each stage can be independently switched on / off, and the equipment can be seamlessly switched. This ensures continuous exhaust gas treatment and compliant pollutant emissions while meeting equipment maintenance requirements. Therefore, this novel seamless switching fiberglass kiln exhaust gas treatment device offers the following advantages: centralized treatment of multi-source exhaust gases and zero pollutant emissions; uninterrupted treatment during maintenance through dual-equipment switching; high efficiency in equipment maintenance and operation; and precise pressure control and waste heat recovery.

[0033] See Figure 1 , Figure 2 and Figure 3 The main exhaust outlet 5 of the kiln is connected to the kiln body 12, and the kiln body 12 is connected to the first wire drawing operation passage 13, the second wire drawing operation passage 14, the third wire drawing operation passage 15 and the fourth wire drawing operation passage 16. The first wire drawing operation passage 13, the second wire drawing operation passage 14, the third wire drawing operation passage 15 and the fourth wire drawing operation passage 16 are respectively equipped with a first exhaust gas emission point 17, a second exhaust gas emission point 18, a third exhaust gas emission point 19 and a fourth exhaust gas emission point 20. The first exhaust gas emission point 17, the second exhaust gas emission point 18, the third exhaust gas emission point 19, and the fourth exhaust gas emission point 20 are all connected to the cooling waste heat utilization unit 2 through the first insulated pipe 7. This facilitates the unified connection of the exhaust gas emission points of each path to the cooling waste heat utilization unit 2 through the first insulated pipe 7, which not only achieves centralized collection and efficient transportation of exhaust gas from multiple emission points, avoiding the problem of low treatment efficiency caused by decentralized emissions, but also adapts to the seamless switching requirements of the two sets of flue gas waste heat boilers 8 and exhaust gas treatment equipment 10. While ensuring continuous production and stable kiln pressure, it provides a stable source of exhaust gas for subsequent cooling, dust and nitrogen oxide co-treatment, and waste heat recovery, thus balancing environmental compliance and production efficiency.

[0034] The first insulated pipe 7 has a first waste gas inlet 21, a second waste gas inlet 22, a third waste gas inlet 23, and a fourth waste gas inlet 24. The first waste gas inlet 21, the second waste gas inlet 22, the third waste gas inlet 23, and the fourth waste gas inlet 24 are respectively sealed and connected to the first waste gas emission point 17, the second waste gas emission point 18, the third waste gas emission point 19, and the fourth waste gas emission point 20. This ensures that the waste gas from multiple channels is accurately and leak-free into the pipe, avoiding pollution and energy loss caused by waste gas leakage. It also ensures the independence and stability of waste gas transportation at each emission point, laying the foundation for subsequent centralized waste gas treatment, equipment switching, and kiln pressure stability control, and improving the overall environmental protection and operational reliability of the system.

[0035] See Figure 1 , Figure 2 and Figure 3 The first insulated pipes 7 at the first waste gas inlet point 21, the second waste gas inlet point 22, the third waste gas inlet point 23, and the fourth waste gas inlet point 24 are respectively equipped with a first electrically controlled gate valve 25, a second electrically controlled gate valve 26, a third electrically controlled gate valve 27, and a fourth electrically controlled gate valve 28. This allows for flexible adjustment of waste gas delivery according to the production or maintenance needs of a single passage, avoiding the impact of single-pass abnormalities on the overall system operation. It also helps stabilize the internal pressure of the kiln and each passage, ensuring continuous and compliant waste gas treatment in conjunction with subsequent equipment switching, thereby improving the system's operational flexibility and reliability.

[0036] The flue gas waste heat boiler 8 has a first waste heat boiler 29 and a second waste heat boiler 30. The exhaust gas outlet 5 of the kiln body is connected to the inlet end of the first waste heat boiler 29 and the second waste heat boiler 30 through a second insulated pipe 9. The inlet end of the first waste heat boiler 29 and the second waste heat boiler 30 are respectively equipped with a first waste gas flue damper 31 and a second waste gas flue damper 32. The outlet end of the first waste heat boiler 29 and the second waste heat boiler 30 are both connected to the waste gas treatment unit 3. This not only realizes the dual-path diversion treatment of high-temperature waste gas from the kiln body 12, but also ensures the normal operation of the other set when one set of boilers is under maintenance by switching the waste gas flue damper, avoiding the interruption of waste gas treatment; it can also rely on the dual boiler structure to stably receive high-temperature waste gas and complete cooling and waste heat recovery, providing waste gas with a suitable temperature for the subsequent waste gas treatment unit 3, while ensuring the stability of kiln pressure, taking into account both continuous production and environmental compliance.

[0037] See Figure 1 , Figure 2 and Figure 3 The first waste heat boiler 29 and the second waste heat boiler 30 are respectively equipped with a fifth electric control gate valve 33 and a sixth electric control gate valve 34 at their outlet ends. This allows for precise control of the transmission and disconnection of the waste gas after treatment by a single boiler, preventing substandard waste gas from entering subsequent units and improving overall operational reliability.

[0038] The waste gas treatment equipment 10 includes a first waste gas treatment machine 35 and a second waste gas treatment machine 36 arranged in parallel. The outlets of the first waste heat boiler 29 and the second waste heat boiler 30 are both connected to the inlet of the first waste gas treatment machine 35 and the second waste gas treatment machine 36. This ensures that when a single waste gas treatment machine is under maintenance, the other machine can take over all the waste gas, ensuring continuous and uninterrupted treatment. It also allows for flexible adjustment of the operating load of the two machines according to the amount of waste gas, ensuring that pollutants are discharged in compliance with standards.

[0039] See Figure 1 , Figure 2 and Figure 3 The exhaust ends of the first waste gas treatment machine 35 and the second waste gas treatment machine 36 are connected in parallel to a centralized waste gas emission sealing pipe 37. One end of the centralized waste gas emission sealing pipe 37 is provided with a centralized waste gas emission point 38. This not only achieves centralized and compliant emission of the treated waste gas, but also prevents the waste gas from escaping. At the same time, in conjunction with the parallel first waste gas treatment machine 35 and the second waste gas treatment machine 36, it ensures continuous and stable emission at the emission end when switching between individual treatment machines, thereby improving the environmental friendliness and operational continuity of the system.

[0040] The first waste gas treatment unit 35 and the second waste gas treatment unit 36 ​​are respectively equipped with a seventh electrically controlled gate valve 39 and an eighth electrically controlled gate valve 40 at their inlet ends, and a ninth electrically controlled gate valve 41 and a tenth electrically controlled gate valve 42 at their outlet ends. This facilitates the quick disconnection of the inlet and outlet of a single treatment unit during maintenance, preventing untreated or substandard waste gas from affecting the system. It also enables seamless switching in conjunction with the parallel structure of the two treatment units, ensuring continuous and compliant waste gas treatment, while simultaneously helping to maintain stable system pressure and improve operational reliability.

[0041] The inner walls of the first waste heat boiler 29 and the second waste heat boiler 30 are provided with refractory materials, which can effectively resist the erosion of the boiler inner wall by the high temperature exhaust gas of the kiln body 12, extend the service life of the boiler, and at the same time reduce the heat loss through the boiler wall and improve the waste heat recovery efficiency.

[0042] See Figure 1 , Figure 2 and Figure 3 In this embodiment, the treatment steps of a novel seamless switching fiberglass kiln exhaust gas treatment device are as follows: Step 1: Waste gas collection. The high-temperature flue gas from the main exhaust gas outlet 5 of the kiln is introduced into the waste heat boiler 8 through the second insulation pipe 9. At the same time, the high-temperature flue gas from the exhaust gas outlet 6 of each wire drawing operation passage is collected through the first insulation pipe 7 and introduced into the rear end of the waste heat boiler 8. Step 2, cooling and waste heat utilization: the high-temperature flue gas is cooled to a temperature range suitable for the "metal filter bag dust and nitrification integration" process through the flue gas waste heat boiler 8, and at the same time, the waste heat is recovered to generate high-temperature steam and supply it to the production line. Step 3, exhaust gas treatment: The cooled flue gas enters two sets of parallel exhaust gas treatment equipment 10, where nitrogen oxides, sulfur dioxide and particulate matter are removed through the "metal filter bag dust and nitrification integration" process. Step 4: Seamless switching control. When one of the flue gas waste heat boilers 8 or waste gas treatment equipment 10 needs maintenance, the connecting pipeline of the corresponding equipment is closed by electric control gate valve 11, while the connecting pipeline of the other equipment is opened at the same time to ensure continuous waste gas treatment and maintain the internal pressure of the kiln stable at 5Pa~25Pa.

[0043] See Figure 1 , Figure 2 and Figure 3 In this embodiment, through distributed control, key point cutoff, centralized treatment, and waste heat utilization, while ensuring continuous and stable emission of waste gas, the temperature of flue gas at about 1200°C is reduced to about 350°C through the first waste heat boiler 29 and the second waste heat boiler 30. This meets the requirements of subsequent waste gas treatment processes (the mature metal filter bag dust and nitrification integrated technology requires the flue gas temperature not to exceed 350°C), and generates steam for other equipment in the production line (such as large industrial air conditioners). This ensures continuous and stable emission of waste gas from the kiln body 12 and the passage, while achieving zero emission of pollutants exceeding the standard. It also ensures that equipment maintenance is not affected, and at the same time, it achieves energy-saving effects by utilizing the waste heat of the flue gas.

[0044] See Figure 1 , Figure 2 and Figure 3 In this embodiment, the exhaust gas from each wire drawing operation path is centrally transported to the front end of the exhaust gas treatment system through the first insulated pipe 7. Since the pipe span between the kiln flue gas outlet and the passage flue gas outlet is usually more than 60m, the passage exhaust gas can be naturally cooled to about 350°C during transportation. It can directly enter the subsequent exhaust gas treatment system without additional cooling. Moreover, the passage exhaust gas emission is small, only one-fifth of the kiln body 12 flue gas emission, and will not cause a load impact on the treatment system. However, the kiln body 12 flue gas emission is large, and the outlet temperature is as high as about 1200°C. The first waste heat boiler 29 and the second waste heat boiler 30 need to be introduced first. While reducing the flue gas temperature to 350°C (to adapt to the subsequent treatment process), heat is recovered to generate high-temperature steam, which is used for industrial air conditioning, production equipment, etc. in the plant area, effectively achieving energy saving.

[0045] See Figure 1 , Figure 2 and Figure 3In this embodiment, the selection and operation combination of the dual waste heat boilers (first waste heat boiler 29, second waste heat boiler 30), dual waste gas treatment equipment 10 (first waste gas treatment machine 35, second waste gas treatment machine 36), and various electrically controlled gate valves 11 (including the waste gas inlet gate valve, boiler inlet and outlet gate valves, and treatment machine inlet and outlet gate valves) can be flexibly adjusted according to the actual production load of the fiberglass furnace, waste gas emission volume, equipment maintenance plan, etc., to achieve centralized emission, efficient filtration, and heat recovery of multiple waste gases. For example, when the furnace is operating at full load and the waste gas volume is large, the dual boilers can be activated to process high-temperature waste gas in parallel, and the dual boilers can be activated simultaneously. The treatment unit works in synergy with filtration, using a controller to adjust the opening of each gate valve to balance the distribution of exhaust gas, maximizing cooling, waste heat recovery, and purification efficiency. When a single wire drawing operation path is under maintenance, the corresponding electric control gate valve 11 can be closed, and the exhaust gas from the other paths can be normally fed into the treatment system without interrupting the overall exhaust gas treatment. When a single waste heat boiler or exhaust gas treatment equipment 10 needs maintenance, the corresponding inlet and outlet gate valves can be switched, allowing another set of equipment to take over all the exhaust gas treatment tasks. This ensures uninterrupted centralized exhaust gas emission and meets filtration standards, while also continuously recovering the heat from high-temperature flue gas to convert it into steam for use in the plant, adapting to the system operation requirements under different working conditions.

[0046] See Figure 1 , Figure 2 and Figure 3 In this embodiment, the main exhaust gas outlet 5 of the kiln also has a fifth wire drawing operation passage 43, and a fifth exhaust gas discharge point 44 is provided on the fifth wire drawing operation passage 43. The fifth exhaust gas discharge point 44 is connected to the cooling waste heat utilization unit 2 through the first heat preservation pipe 7. The first insulated pipe 7 also has a fifth exhaust gas inlet 45, which is sealed and connected to the fifth exhaust gas outlet 44. The first insulated pipe 7 with the fifth exhaust gas inlet 45 has a fifth electrically controlled gate valve 46. The wire drawing operation passage, exhaust gas outlet and exhaust gas inlet can be added or removed arbitrarily according to the actual situation to adapt to the needs of the site environment.

[0047] Example 2 See Figure 1 , Figure 2 and Figure 3 Based on Example 1, in this example, the exhaust gas in the passage is controlled independently: Each wire drawing operation exhaust gas emission point → corresponding electric control gate valve 11 (such as the first electric control gate valve 25, the second electric control valve 26, the third electric control valve 27 and the fourth electric control valve 28) → first insulated pipe 7 → converges to the back end of the flue gas waste heat boiler 8, which can independently control the exhaust gas transportation of a single channel and adapt to the production or maintenance needs of the channel.

[0048] Example 3 See Figure 1, Figure 2 and Figure 3 Based on Examples 1 and 2, the kiln high-temperature exhaust gas diversion control path in this example is as follows: The kiln main exhaust gas outlet 5 → second insulation pipe 9 → first exhaust gas flue gate 31 or second exhaust gas flue gate 32 → first waste heat boiler 29 or second waste heat boiler 30. The high-temperature exhaust gas is diverted to the two boilers by switching through the electric control gate valve 11, which supports the switching of exhaust gas transportation during boiler maintenance.

[0049] Example 4 See Figure 1 , Figure 2 and Figure 3 Based on Examples 1, 2, and 3, the waste heat boiler exhaust gas control path in this example is as follows: First waste heat boiler 29 or second waste heat boiler 30 → fifth electric control gate valve 33 or sixth electric control gate valve 34 → waste gas treatment unit 3, precisely control the supply and demand of waste gas after cooling, and prevent waste gas from entering subsequent stages when the boiler is abnormal.

[0050] Example 5 See Figure 1 , Figure 2 and Figure 3 Based on Embodiments 1, 2, 3, and 4, in this embodiment, the inlet and outlet control paths of the waste gas treatment equipment 10 are as follows: The exhaust gas from the waste heat boiler 8 is connected to the seventh electrically controlled gate valve 39 or the eighth electrically controlled gate valve 40, the first waste gas treatment machine 35 or the second waste gas treatment machine 36, the ninth electrically controlled gate valve 41 or the tenth electrically controlled gate valve 42, and the centralized waste gas discharge sealing pipe 37, so that each treatment machine can operate independently or be shut off, ensuring continuous discharge during maintenance.

[0051] Example 6 See Figure 1 , Figure 2 and Figure 3 Based on Embodiments 1, 2, 3, 4, and 5, the system pressure linkage control path in this embodiment is as follows: The controller (not shown in the figure) monitors the kiln pressure (15Pa±10Pa) in real time, and adjusts the opening of each electric control gate valve 11 and the switching between the dual boilers and dual processors in conjunction with the control, thereby maintaining a stable exhaust gas emission rate and ensuring kiln pressure balance.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel seamless switching type fiberglass kiln exhaust gas treatment device, characterized in that: It includes a waste gas collection unit (1), a cooling waste heat utilization unit (2), a waste gas treatment unit (3), and a control unit; The waste gas collection unit (1) includes a kiln main body waste gas outlet (5), no less than three wire drawing operation passage waste gas outlets (6), and a first heat-insulating pipe (7) connecting each waste gas outlet to the cooling waste heat utilization unit (2). The cooling waste heat utilization unit (2) has no less than two sets of flue gas waste heat boilers (8) that can be cut off from each other. The exhaust gas outlet (5) of the kiln body is connected to the input end of the two sets of flue gas waste heat boilers (8) through the second insulation pipe (9). The waste gas treatment unit (3) has no less than two sets of parallel waste gas treatment equipment (10), and the input end of the waste gas treatment equipment (10) is connected to the output end of the flue gas waste heat boiler (8). The control unit includes electrically controlled gate valves (11) installed at each exhaust gas outlet, the connecting pipeline of the flue gas waste heat boiler (8), and the inlet and outlet of the exhaust gas treatment equipment (10). The electrically controlled gate valves (11) are electrically connected to the controller.

2. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 1, characterized in that: The exhaust gas outlet (5) of the kiln body is connected to the kiln body (12), and the kiln body (12) is connected to the first wire drawing operation passage (13), the second wire drawing operation passage (14), the third wire drawing operation passage (15) and the fourth wire drawing operation passage (16). The first wire drawing operation passage (13), the second wire drawing operation passage (14), the third wire drawing operation passage (15) and the fourth wire drawing operation passage (16) are respectively provided with a first exhaust gas emission point (17), a second exhaust gas emission point (18), a third exhaust gas emission point (19) and a fourth exhaust gas emission point (20); The first exhaust gas emission point (17), the second exhaust gas emission point (18), the third exhaust gas emission point (19) and the fourth exhaust gas emission point (20) are all connected to the cooling waste heat utilization unit (2) through the first heat preservation pipe (7).

3. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 2, characterized in that: The first insulated pipe (7) has a first exhaust gas inlet (21), a second exhaust gas inlet (22), a third exhaust gas inlet (23) and a fourth exhaust gas inlet (24); The first exhaust gas inlet (21), the second exhaust gas inlet (22), the third exhaust gas inlet (23) and the fourth exhaust gas inlet (24) are respectively sealed and connected to the first exhaust gas outlet (17), the second exhaust gas outlet (18), the third exhaust gas outlet (19) and the fourth exhaust gas outlet (20).

4. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 3, characterized in that: The first insulated pipe (7) of the first exhaust gas inlet (21), the second exhaust gas inlet (22), the third exhaust gas inlet (23) and the fourth exhaust gas inlet (24) are respectively equipped with a first electric control gate valve (25), a second electric control gate valve (26), a third electric control gate valve (27) and a fourth electric control gate valve (28).

5. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 1, characterized in that: The waste heat boiler (8) has a first waste heat boiler (29) and a second waste heat boiler (30). The exhaust gas outlet (5) of the kiln body is connected to the air inlet of the first waste heat boiler (29) and the second waste heat boiler (30) through a second insulation pipe (9). The air inlet of the first waste heat boiler (29) and the second waste heat boiler (30) are respectively provided with a first exhaust gas flue damper (31) and a second exhaust gas flue damper (32). The exhaust outlets of the first waste heat boiler (29) and the second waste heat boiler (30) are both connected to the waste gas treatment unit (3).

6. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 5, characterized in that: The first waste heat boiler (29) and the second waste heat boiler (30) are respectively equipped with a fifth electric control gate valve (33) and a sixth electric control gate valve (34) at their air outlet ends.

7. A novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 5, characterized in that: The waste gas treatment equipment (10) includes a first waste gas treatment machine (35) and a second waste gas treatment machine (36) arranged in parallel. The outlets of the first waste heat boiler (29) and the second waste heat boiler (30) are connected to the inlet ends of the first waste gas treatment machine (35) and the second waste gas treatment machine (36).

8. The novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 7, characterized in that: The exhaust ends of the first exhaust gas treatment machine (35) and the second exhaust gas treatment machine (36) are connected in parallel to a centralized exhaust gas discharge sealing pipe (37), and a centralized exhaust gas discharge point (38) is opened at one end of the centralized exhaust gas discharge sealing pipe (37).

9. A novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 7, characterized in that: The first waste gas treatment machine (35) and the second waste gas treatment machine (36) are respectively equipped with a seventh electric control gate valve (39) and an eighth electric control gate valve (40) at their inlet ends, and the first waste gas treatment machine (35) and the second waste gas treatment machine (36) are respectively equipped with a ninth electric control gate valve (41) and a tenth electric control gate valve (42) at their outlet ends.

10. A novel seamless switching type fiberglass kiln exhaust gas treatment device according to claim 5, characterized in that: The inner walls of the first waste heat boiler (29) and the second waste heat boiler (30) are provided with refractory material.

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