Furnace pollution control device

Abstract

The utility model relates to the technical field of waste gas treatment, and discloses a kiln pollution control device which comprises a shell, the shell is coaxially and fixedly installed at the flange structure connecting position of a kiln flue gas pipeline, a filtering cavity is formed in the shell, an annular filtering plate is arranged in the filtering cavity, and an exhaust pipe communicated with the filtering cavity is further arranged on the shell. According to the device, the sealing performance of the flange structure can be monitored in real time, periodic detection is not needed, the device only needs to be installed at the position of the flange structure, in this way, the labor cost can be saved, energy consumption is reduced, and when leakage occurs, the device is prevented from being damaged. The sound change generated by the buzzer structure can be found in time and reminded of an operator, the influence of smoke leakage on the environment and safety is avoided, harmful substances in smoke can be filtered when the flange structure leaks, the leaked smoke is prevented from being diffused to the surrounding environment, and the pollution of the leaked smoke to the environment is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a furnace pollution prevention and control device. Background Art

[0002] Waste gas pollution from furnaces is a serious environmental problem that has a significant impact on air quality and human health. Furnaces are equipment used to heat and process raw materials, such as industrial furnaces and kilns, which produce a large amount of waste gas during operation. These waste gases contain various harmful substances and pollutants, such as sulfur dioxide, nitrogen oxides, particulate matter, heavy metals, etc., which pose a potential threat to the environment and human health. First of all, sulfur dioxide and nitrogen oxides in furnace exhaust are one of the main components of air pollution. They come from the combustion process of fuel in the furnace, especially when using fuel containing sulfur compounds, a large amount of sulfur dioxide will be produced; and the high temperature and pressure during the combustion process will cause nitrogen and oxygen in the air to react to form nitrogen oxides. After these gases are discharged into the atmosphere, they react with water vapor and oxygen to form sulfuric acid and nitric acid, which in turn become the main source of acid rain and haze. Secondly, particulate matter in furnace exhaust is also an important part of air pollution. These particulate matter comes from the combustion of fuel and the volatilization of raw materials. They can be divided into two categories: inhalable particulate matter and fine particulate matter. Particles with a size of less than 2.5 microns have a greater impact on human health. These particles can remain suspended in the air for a long time and can cause health problems such as respiratory diseases, cardiovascular diseases and cancer when inhaled by the human body. In addition, furnace exhaust also contains some toxic heavy metals, such as lead, mercury, and cadmium. These heavy metals are difficult to decompose after entering the environment and will accumulate in soil, water and organisms, causing long-term impacts on the ecosystem and human health. They are bioaccumulative and toxic, and are harmful to the human nervous system, immune system and reproductive system.

[0003] Existing furnace exhaust ducts usually use flanges for sealing connections. However, when the flange structure is in use, if the flange bolts are not tightened correctly or the sealing gasket is inappropriate or damaged, it will cause flue gas leakage. In addition, the flange sealing gasket may be worn or aged due to the influence of pressure, temperature and medium during long-term use, resulting in reduced sealing performance, which will cause flue gas leakage. At the same time, since the exhaust duct of the furnace is usually in a high temperature or high pressure environment, the flange and the sealing gasket are more susceptible to damage, resulting in flue gas leakage. When these flue gases leak, they will have an impact on the surrounding environment. The existing monitoring of the sealing of the flange structure usually involves regularly checking whether there are signs of leakage at the flange connection, and using ultrasonic sensors or sound amplifiers to detect whether there are sound signals generated by leakage at the flange connection. Leakage will produce specific sound frequencies and patterns. However, since this monitoring cannot monitor its structure in real time, flue gas leakage during the monitoring period will cause harmful substances to enter the surrounding environment, pollute the air, soil and water sources, and damage the ecological environment. In addition, flue gas leakage may cause dangerous situations such as fire, explosion or poisoning, posing a threat to workers and equipment. Utility Model Content

[0004] (I) Technical problems to be solved: In view of the deficiencies in the prior art, the utility model provides a furnace pollution prevention and control device, which is capable of real-time monitoring of the sealing performance of the flange structure of the furnace exhaust pipe, and can automatically alarm when there is a problem with the sealing performance of the flange structure without any additional energy consumption, and can filter the leaked flue gas while giving an alarm, thus solving the problem that the leakage period of the existing furnace exhaust pipe is long, and the leaked flue gas will cause damage to the surrounding environment and pose a safety hazard.

[0005] (II) Technical solution: In order to achieve the above-mentioned ability to monitor the sealing performance of the flange structure of the furnace exhaust pipe in real time, and to automatically alarm when there is a problem with the sealing performance of the flange structure without consuming any additional energy, and to filter the leaked flue gas while giving an alarm, the utility model provides the following technical solution: a furnace pollution prevention and control device, comprising a shell, the shell being coaxially fixedly mounted at the flange structure connection of the furnace flue gas duct, the inner diameter of the shell being equal to the diameter of the flue gas duct, a filter cavity being arranged in the shell, the diameter of the filter cavity being larger than the diameter of the flange structure, an annular filter plate being arranged in the filter cavity, the height of the filter plate being equal to the height of the filter cavity, an exhaust pipe connected to the filter cavity being further arranged on the shell, a buzzer structure being fixedly mounted on the inner wall of the exhaust pipe, which generates high-frequency vibration sound waves to produce sound when gas flows.

[0006] Preferably, the outer shell is composed of two semi-annular ring plates, a fixing plate is provided at the connection of the two semi-annular ring plates, the fixing plates on both sides are connected by bolts, and the connection of the two semi-annular ring plates is connected by a sealing structure.

[0007] Preferably, the diameter of the filter plate is equal to the diameter of the flange structure.

[0008] Preferably, sealing rings are provided at the joints between the upper end surface and the lower end surface of the shell and the smoke duct, and the inner diameter of the sealing ring is smaller than the diameter of the smoke duct.

[0009] Preferably, the upper end surface and the lower end surface of the filter cavity are provided with fixing rings for fixing the filter plate.

[0010] Preferably, the length of the shell is greater than the length of the flange structure.

[0011] (III) Beneficial effects: Compared with the prior art, the utility model provides a furnace pollution prevention and control device, which has the following beneficial effects:

[0012] 1. This furnace pollution prevention and control device, through the coordinated use of a filter chamber structure, an exhaust pipe structure, and a buzzer structure, is different from the traditional technical structure in that the flange structure needs to be periodically tested for its sealing. The device can monitor the sealing of the flange structure in real time and does not require periodic testing. It only needs to be installed at the flange structure position, which can save labor costs and reduce energy consumption. When a leak occurs, the sound changes generated by the buzzer structure can be discovered in time and remind the operator, avoiding the impact of flue gas leakage on the environment and safety. In addition, the device does not consume energy during the monitoring process, but only monitors the leakage of the flange structure in real time through the sound changes of the buzzer structure.

[0013] 2. This furnace pollution prevention and control device, through the coordinated use of a filter chamber structure and a filter plate structure, is compared with a traditional technical structure. When a flange structure leaks, smoke will diffuse into the surrounding environment and affect the environment. The annular filter plate in the device can filter harmful substances in the smoke when the flange structure leaks, thereby reducing the diffusion of leaked smoke into the surrounding environment and reducing its pollution to the environment, which helps to protect the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of a furnace pollution prevention and control device of the utility model;

[0015] Figure 2 This is a structural front view of a furnace pollution prevention and control device of the utility model;

[0016] Figure 3 This is a top view of the structure of a furnace pollution prevention and control device of the utility model;

[0017] Figure 4 This is a structural AA sectional view of a furnace pollution prevention and control device of the utility model;

[0018] Figure 5 This is a structural explosion diagram of a furnace pollution prevention and control device of the utility model.

[0019] In the figure: 1-housing, 2-smoke duct, 3-flange structure, 4-filter chamber, 5-filter plate, 6-exhaust pipe, 7-buzzer structure, 8-fixing plate, 9-bolt, 10-sealing ring, 11-fixing ring. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5A furnace pollution prevention and control device includes a shell 1, which is used to provide a sealed container, connect the device to the flange structure 3 of the furnace flue gas duct 2, and provide a stable environment to achieve furnace pollution prevention and control. The shell 1 connects the device to the flange structure 3 of the furnace flue gas duct 2 to form a closed space. In this way, the furnace flue gas can be isolated from the external environment to prevent flue gas leakage. The shell 1 is coaxially fixedly installed at the connection of the flange structure 3 of the furnace flue gas duct 2. The inner diameter of the shell 1 is equal to the diameter of the flue gas duct 2 to ensure that the airflow inside the device can flow smoothly and avoid airflow blockage and pressure changes. A filter chamber 4 is arranged in the shell 1. The diameter of the filter chamber 4 is larger than the diameter of the flange structure 3. An annular filter plate 5 is arranged in the filter chamber 4. The furnace flue gas often contains particulate matter, such as dust, soot, etc. These particulate matter are harmful to the environment and human health. The annular filter plate 5 can effectively filter the particulate matter in the flue gas through its structure and material characteristics, so that it is no longer discharged into the surrounding air, reducing air pollution. The height of the filter plate 5 is equal to the height of the filter chamber 4, and the height of the filter plate 5 is equal to the height of the filter chamber 4, which can maximize the filtering area. The smoke in the filter chamber 4 must pass through the filter plate 5, and the height of the filter plate 5 determines the area of ​​contact between the smoke and the filter plate 5. The height of the filter plate 5 is equal to the height of the filter chamber 4, which can ensure that the smoke fully contacts the filter plate 5 when passing through the filter chamber 4, thereby improving the filtering effect. At the same time, the height of the filter plate 5 is equal to the height of the filter chamber 4, which can also ensure that the smoke flows evenly in the filter chamber 4. The smoke flow in the filter chamber 4 will be affected by the resistance of the filter plate 5. If the height of the filter plate 5 is less than the height of the filter chamber 4, the smoke flow in the filter chamber 4 may be unevenly distributed, affecting the filtering effect. The height of the filter plate 5 is equal to the height of the filter chamber 4, which can ensure that the smoke flows evenly in the filter chamber 4, making the filtering effect more stable. The housing 1 is also provided with an exhaust pipe 6 connected to the filter chamber 4. When the flange structure 3 of the smoke pipe 2 leaks, the amount of gas in the filter chamber 4 increases, and the pressure increases. In order to avoid excessive pressure in the filter chamber 4, the exhaust pipe 6 is connected to the filter chamber 4 to release the gas with increased pressure and maintain the normal pressure in the filter chamber 4. A buzzer structure 7 is fixedly installed on the inner wall of the exhaust pipe 6, which generates high-frequency vibration sound waves when gas flows. When the gas passes through the exhaust pipe 6, the buzzer structure 7 will make a sound and generate high-frequency vibration sound waves. This sound is continuous and sharp, similar to the sound of a buzzer. The sound emitted by the buzzer structure 7 can serve as an early warning signal for leakage of the flange structure 3. Once the buzzer structure 7 makes a sound, the operator can immediately realize that there is a leakage problem in the flange structure 3, take timely measures to repair it, and avoid the impact of the leakage on the environment and safety. And the buzzer structure 7 can realize real-time monitoring of the flange structure 3.Compared with the traditional periodic inspection, the buzzer structure 7 can handle the leakage immediately when it occurs, without the need for periodic inspection, thus saving labor costs and reducing energy consumption.

[0022] Please participate Figure 1 , Figure 4 , Figure 5, the length of the shell 1 is greater than the length of the flange structure 3. The shell 1 is composed of two semi-annular ring plates. Since the shell 1 needs to be connected to the flange structure 3 of the flue gas duct 2 and fixed thereon, it needs to be installed according to the position of the flange structure 3. Designing the shell 1 as two semi-annular ring plates can be more conveniently installed according to the position of the flange structure 3, and fixedly connected by bolts 9. At the same time, if maintenance or replacement of the filter plate 5 is required, it can be easily disassembled and reinstalled. Only the fixing bolts 9 need to be loosened and one semi-annular ring plate can be removed for maintenance and replacement operations without completely removing the entire shell 1. A fixing plate 8 is provided at the connection of the two semi-annular ring plates, and the fixing plates 8 on both sides are connected by bolts 9. The connection of the two semi-annular ring plates is connected by a sealing structure. Since the flange structure 3 of the flue gas duct 2 may leak, and the device needs to filter and process harmful substances in the flue gas. By providing a sealing structure at the connection of the two semi-annular ring plates, it is possible to effectively prevent the smoke from leaking out of the connection, ensuring that the smoke can only be filtered and processed through the filter plate 5 to prevent harmful substances from escaping. At the same time, a certain pressure and environmental conditions need to be maintained in the filter chamber 4 of the device to ensure the filtering effect. If there is no sealing structure at the connection, the outside air may enter the filter chamber 4 from the connection, destroy the gas environment in the filter chamber 4, and affect the normal operation and filtering effect of the device. By using a sealing structure to connect two semi-annular ring plates, the entry of outside air can be effectively prevented, and the gas environment in the filter chamber 4 can be kept stable. A sealing ring 10 is provided at the junction of the upper end face and the lower end face of the shell 1 with the flue gas pipe 2. The inner diameter of the sealing ring 10 is smaller than the diameter of the flue gas pipe 2. By providing the sealing ring 10 on the upper end face and the lower end face of the shell 1, a sealed connection with the flue gas pipe 2 can be achieved. The function of the sealing ring 10 is to fill the connection gap to prevent the smoke from leaking out from the connection. The inner diameter of the sealing ring 10 is smaller than the diameter of the flue gas pipe 2. When the shell 1 is connected to the flue gas pipe 2, the sealing ring 10 will be compressed to form a tight seal to prevent the smoke from leaking along the junction of the flue gas pipe 2 and the shell 1. The diameter of the filter plate 5 is equal to the diameter of the flange structure 3. The upper and lower end surfaces of the filter chamber 4 are provided with fixing rings 11 for fixing the filter plate 5. By fixing the fixing rings 11 for fixing the filter plate 5, it can be ensured that the filter plate 5 is correctly installed in the filter chamber 4 without displacement or loosening, thereby ensuring the stability and reliability of the filtering effect. At the same time, the fixing rings 11 for fixing the filter plate 5 are provided on the upper and lower end surfaces of the filter chamber 4 to prevent the flue gas from bypassing the filter plate 5 and flowing around in the filter chamber 4. The fixing rings 11 at the upper and lower ends of the filter plate 5 can effectively close the upper and lower ports of the filter chamber 4, so that the flue gas can only be filtered through the filter plate 5, preventing the flue gas from bypassing the filter plate 5 and directly entering and exiting through the ports, ensuring the effectiveness and integrity of the filtering effect, and conveniently maintaining and replacing the filter plate 5. The fixing rings 11 for fixing the filter plate 5 can keep the position of the filter plate 5 fixed, which is convenient for maintenance personnel to inspect, clean or replace the filter plate 5.This can improve maintenance efficiency and reduce maintenance time and work difficulty.

[0023] Working principle: During installation, firstly, the two semi-annular ring plates are coaxially arranged along the flue gas duct 2 at the position of its flange structure 3 and after ensuring that they are fixed stably, the fixing plates 8 at both ends of the two semi-annular ring plates are tightened by bolts 9, so that the device is stably fixed on the flange structure 3, and a sealing connection is made with the flue gas duct 2 through a sealing ring 10 to prevent smoke leakage along the joint between the flue gas duct 2 and the outer casing 1.

[0024] When the flange structure 3 of the flue gas duct 2 leaks, the flue gas will be filtered by the annular filter plate 5 to remove harmful substances in the flue gas. At the same time, the leakage of the flange structure 3 will cause the gas volume in the filter chamber 4 to increase and the pressure to increase, so that the pressure in the filter chamber 4 is greater than the external pressure. At this time, the gas will be discharged from the exhaust pipe 6 under the influence of pressure, and the gas will pass through the buzzer structure 7 during the process of passing through the exhaust pipe 6. When the gas passes through the buzzer structure 7, the buzzer structure 7 will produce a sound and emit a high-frequency vibration sound wave. This sound is usually continuous and sharp, similar to the sound of a buzzer, thereby prompting the flange structure 3 to leak. This device can realize real-time monitoring of the flange structure 3. This real-time monitoring can be handled immediately when the leakage occurs, avoiding the impact of the leakage on the environment and safety. In addition, traditional periodic inspections require a lot of manpower and time, while this device only needs to be installed according to the position of the flange structure 3, and does not require periodic inspection. This can save labor costs and reduce energy consumption.

[0025] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0026] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A furnace pollution prevention and control device, comprising a housing (1), wherein the housing (1) is coaxially fixedly mounted at a connection of a flange structure (3) of a furnace flue gas duct (2), wherein the inner diameter of the housing (1) is equal to the diameter of the flue gas duct (2), and wherein: A filter chamber (4) is provided in the housing (1), the diameter of the filter chamber (4) being larger than the diameter of the flange structure (3), an annular filter plate (5) is provided in the filter chamber (4), the height of the filter plate (5) being equal to the height of the filter chamber (4), an exhaust pipe (6) connected to the filter chamber (4) is also provided on the housing (1), and a buzzer structure (7) is fixedly mounted on the inner wall of the exhaust pipe (6) for generating high-frequency vibration sound waves to produce sound when gas flows.

2. A furnace pollution prevention and control device according to claim 1, characterized in that: The housing (1) is composed of two semi-annular ring plates, a fixing plate (8) is provided at the connection between the two semi-annular ring plates, the fixing plates (8) on both sides are connected by bolts (9), and the connection between the two semi-annular ring plates is connected by a sealing structure.

3. The furnace pollution prevention and control device according to claim 1, characterized in that: The diameter of the filter plate (5) is equal to the diameter of the flange structure (3).

4. The furnace pollution prevention and control device according to claim 1 is characterized in that: Sealing rings (10) are provided at the locations where the upper end surface and the lower end surface of the shell (1) are connected to the flue gas duct (2); the inner diameter of the sealing ring (10) is smaller than the diameter of the flue gas duct (2).

5. The furnace pollution prevention and control device according to claim 1, characterized in that: The upper end surface and the lower end surface of the filter cavity (4) are provided with fixing rings (11) for fixing the filter plate (5).

6. The furnace pollution prevention and control device according to claim 1, characterized in that: The length of the shell (1) is greater than the length of the flange structure (3).

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