RTO thermal oxidation furnace with heat accumulator anti-blocking structure

Abstract

The utility model relates to an RTO (Regenerative Thermal Oxidation) furnace with a heat accumulator anti-blocking structure, which comprises a furnace body, a heat accumulator, impurity separation equipment, dust removal equipment and an air outlet pipe, an air inlet is arranged at the top of the dust removal equipment, a cyclone cylinder is fixed in the dust removal equipment, and a plurality of guide plates are arranged in the impurity separation equipment in a left-right staggered manner. A heat exchange pipe is spirally arranged on the upper half portion in the heat accumulator, the bottom end of the heat accumulator is detachably connected with a slag collecting box, and an exhaust port is formed in the bottom of the right side of the heat accumulator, so that most impurities are removed before waste gas enters the heat accumulator, and the risk that the heat accumulator is blocked is greatly reduced; and impurities are not easy to accumulate on the surface of the heat accumulator to form blockage, so that the problem that the heat accumulator is easy to block is fundamentally solved, and the effectiveness and comprehensiveness of waste gas treatment are improved.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment technology, and in particular to an RTO thermal oxidation furnace with a heat storage body anti-clogging structure. Background Technology

[0002] With industrial development, the treatment of industrial waste gas has become a crucial aspect of environmental protection. Regenerative Thermal Oxidizers (RTOs) are highly efficient waste gas treatment devices that utilize high-temperature oxidation reactions to convert harmful substances in waste gas into harmless substances. They can purify large quantities of waste gas in a short time, significantly reducing the pollutant content and minimizing the environmental impact of emissions. However, existing RTOs face numerous challenges in practical applications. For example, patent CN220931135U discloses an RTO regenerative thermal incinerator with an integral cylindrical heat storage body installed inside the furnace. When impurities in the organic waste gas or soot from combustion passes through the heat storage body, these impurities easily adhere to the honeycomb pores. Over time, cleaning becomes extremely difficult, and failure to clean promptly severely impacts ventilation efficiency, thus affecting the overall performance of the incinerator. Furthermore, cleaning the heat storage body requires stopping the equipment and restarting it only after cleaning, disrupting the continuity of operation, reducing efficiency, and impacting the effectiveness and comprehensiveness of waste gas treatment. Utility Model Content

[0003] (a) Technical problems to be solved

[0004] In view of the limitations of existing RTO thermal oxidizers, the purpose of this utility model is to provide an RTO thermal oxidizer with an anti-clogging structure for the heat storage body. The gas inlet device is equipped with a cyclone dust removal device and an impurity separation device, which effectively pre-treats the exhaust gas. Most of the impurities are removed before the exhaust gas enters the heat storage body, which greatly reduces the risk of heat storage body clogging. Moreover, even if a small amount of impurities enter the heat storage body, its special layered structure and the wavy texture design of the inner and outer surfaces make it difficult for impurities to accumulate on the surface of the heat storage body and form a blockage. This fundamentally solves the problem of easy blockage of the heat storage body, reduces the amount of cleaning and maintenance work caused by blockage, and improves the effectiveness and comprehensiveness of exhaust gas treatment.

[0005] (II) Technical Solution

[0006] To achieve the above objectives, this utility model provides the following technical solution: an RTO thermal oxidation furnace with a heat storage body anti-clogging structure, comprising a furnace body, a heat storage body inside the furnace body, an exhaust pipe fixedly connected to the bottom of the furnace body, an impurity separation device connected to the top of the furnace body via a pipe, a dust removal device connected to the top of the impurity separation device via a pipe, an air inlet at the top of the dust removal device, a cyclone separator fixed inside the dust removal device, an air outlet on the right side, several guide plates arranged alternately on the left and right sides inside the impurity separation device, a heat exchange tube spirally arranged in the upper part inside the impurity separation device, a slag collection box detachably connected to the bottom of the impurity separation device, and an exhaust port at the bottom right side of the impurity separation device. Before entering the RTO thermal oxidizer, the exhaust gas first enters the dust removal equipment, where it undergoes preliminary dust removal under the action of the cyclone separator, removing some large particulate impurities. Then, it enters the impurity separation equipment through the pipe at the bottom of the dust removal equipment. In the impurity separation equipment, the exhaust gas is divided into two parts. One part enters the heat exchange tube and is preheated inside the heat exchange tube. The other part is outside the heat exchange tube. After the exhaust gas comes into contact with the guide plate, the airflow generates complex turbulence and vortexes under the action of the guide plate. As a result, the impurities in the exhaust gas are deposited at the bottom of the impurity separation equipment under the combined action of gravity and airflow turbulence, that is, they enter the slag collection box downwards, completing the impurity separation operation. The heat exchange tubes are only distributed in the upper part of the impurity separation section, while the guide plates are evenly distributed in the vertical direction of the entire impurity separation device. In other words, the lower part of the heat exchange tubes also has guide plates. When the exhaust gas enters the heat exchange tubes, it is preheated inside the heat exchange tubes and then flows out. It will come into contact with the guide plates located at the bottom of the heat exchange tubes. Under the action of the guide plates, turbulence and vortices are generated, which separate the impurities in the preheated exhaust gas. These impurities are also deposited downwards in the slag collection box under the action of gravity and airflow disturbance. At this time, the exhaust gas enters the next stage through the exhaust port.

[0007] To further explain, the top of the dust removal equipment here is connected to an external exhaust gas source via a pipe. The connection end is equipped with a flange, which utilizes existing technology; the specific connection method will not be detailed here. Near the cyclone separator, the pipe gradually narrows to form an interface that matches the cyclone separator, ensuring that the exhaust gas enters the cyclone separator smoothly in a tangential direction. The cyclone separator is vertically positioned within the device, cylindrical in shape, with arc-shaped end caps at the top and bottom to reduce dead airflow angles. A dust hopper is welded to the bottom of the cyclone separator, and an outlet is located on its right bottom side. This outlet is connected to the top of the impurity separation equipment via a pipe. It is important to note that the outlet is positioned above the dust hopper to prevent dust from entering the pipe. Simultaneously, the pipe connects to the top of the impurity separation equipment, while the outlet is located at the bottom of the cyclone separator, meaning the pipe is connected at an angle. The exhaust gas, after initial dust removal, enters the pipe through the outlet. Even if the exhaust gas carries some impurities, they will settle downwards under gravity within the pipe and return to the dust hopper, further aiding in dust removal.

[0008] More specifically, guide vanes are installed inside the cyclone separator, evenly distributed along the circumference of the separator wall. Their shape is a logarithmic spiral. The specific arrangement can utilize existing technology and will not be detailed here. The exhaust gas forms a stable and high-speed rotating airflow inside the separator, and centrifugal force effectively throws dust particles towards the separator wall. An ash discharge port is located at the bottom of the ash hopper, and a valve is installed at the discharge port. The valve can be opened periodically to discharge the collected dust. The specific usage method can utilize existing technology and will not be detailed here.

[0009] Preferably, one end of each guide plate is fixedly connected to the inner wall of the impurity separation device, while the other end slopes downwards. The guide plates on the left and right sides do not contact each other, and the surface of each guide plate is decorated with a wavy pattern. The impurity separation device is a cuboid, and the guide plates are arranged alternately on both sides of its interior. That is, several guide plates are welded from top to bottom on both the left and right sides of the cuboid, alternating left and right, extending from the top of the device to near the bottom, forming a complex but orderly structure. One end of each guide plate is firmly welded to the inner wall of the impurity separation device, while the other end slopes downwards at an angle typically between 30 and 60 degrees. The guide plates on the left and right sides slope downwards, but they do not contact each other, always leaving a gap. In this way, when the exhaust gas enters from the inlet of the device, it will not only follow a fixed channel, but can freely shuttle between these guide plates, forming a complex and diverse airflow path.

[0010] It is particularly important to note that each guide plate has a wavy texture on its surface. When the exhaust gas encounters these wavy guide plates, the airflow will generate various small vortices and turbulences. This allows impurity particles in the exhaust gas to be more easily separated from the exhaust gas under the agitation of the airflow. Then, under the action of gravity, they slide down the inclined guide plates to the bottom of the equipment, which is the slag collection box.

[0011] Preferably, the outer wall of the heat exchange tube does not contact the inner wall of the impurity separation device. The top of the heat exchange tube penetrates the top of the impurity separation device and extends into a pipe fixedly connected to the bottom of the dust removal device. The heat exchange tube is spirally distributed in the upper part of the impurity separation device, meaning it is only spirally arranged in the upper space of the impurity separation device. This spiral arrangement maximizes the contact area and contact time between the exhaust gas and the heat exchange tube within a limited space. A certain distance is maintained between the outer wall of the heat exchange tube and the inner wall of the impurity separation device, allowing sufficient space for the exhaust gas to flow outside the heat exchange tube, preventing blockages or uneven airflow due to excessive proximity.

[0012] The top of the heat exchange tube extends into a conduit that connects the dust removal equipment and the impurity separation equipment. Exhaust gas flows out of the dust removal equipment and into the conduit, then through the conduit into the impurity separation equipment. Here, some of the exhaust gas enters the heat exchange tube, while some enters directly into the impurity separation equipment. In other words, a portion of the exhaust gas from the dust removal equipment can smoothly enter the heat exchange tube, where heat exchange occurs. During this process, the exhaust gas transfers heat to the heat exchange tube, raising its temperature, while the exhaust gas's own temperature may decrease or increase (depending on the direction and conditions of the heat exchange). Simultaneously, inside the impurity separation equipment, the exhaust gas flowing outside the heat exchange tube also interacts with the internal environment, undergoing heat exchange and impurity separation.

[0013] It is important to note that the guide plates are installed throughout the entire vertical direction of the impurity separation equipment, meaning that guide plates are also installed in the upper space where the heat exchange tubes are located. These guide plates are installed within the spiral gaps of the heat exchange tubes, which mean that the heat exchange tubes are spirally coiled around the upper space of the impurity separation equipment, and the guide plates are interspersed within them. This arrangement does not obstruct the flow of exhaust gas within the heat exchange tubes, nor does it affect the function of the guide plates in guiding airflow. Together with the surrounding heat exchange tube walls and other guide plates, they form a complex network of airflow channels.

[0014] Preferably, the heat storage body has a layered structure, including an outer layer and an inner layer, with wavy patterns on both the inner and outer surfaces of the outer and inner layers. That is, in the layered structure of the heat storage body, the outer and inner layers are nested within each other, with the inner layer located inside the outer layer. Furthermore, the wavy patterns on both the inner and outer surfaces of the outer and inner layers are regularly distributed across the surface. When exhaust gas enters the furnace and flows through the heat storage body, these wavy patterns significantly increase the contact area between the exhaust gas and the heat storage body. The exhaust gas flows along the wavy surface rather than simply skimming over a flat surface, thus increasing the contact time and area between the air and the fabric. For the heat storage body, a larger contact area means more efficient heat exchange. The heat from the exhaust gas can be transferred to the heat storage body more effectively, or, when needed, the heat stored in the heat storage body can be better transferred to the exhaust gas. In addition, the wavy patterns also have a certain hindering effect on impurities that may be present in the exhaust gas. As impurity particles flow across the surface of the heat storage medium with the exhaust gas, the texture alters their trajectory, making them more likely to remain at the troughs rather than passing directly through the medium. This reduces the likelihood of impurities entering the internal pores of the heat storage medium, lowering the risk of blockage.

[0015] It should be noted that the outer and inner layers are connected using a slot and buckle connection method. Matching slots and buckles are provided on the inner wall of the outer layer and the outer wall of the inner layer, respectively. The specific design and connection method utilize existing technology and will not be described in detail.

[0016] Preferably, a fixing rod is fixedly connected to the middle of the upper and lower ends of the heat storage body. The other end of the fixing rod is fixedly connected to the middle of the inner wall of the upper and lower ends of the furnace body, just like a bridge, with one end fixed to the heat storage body and the other end fixed to the inner wall of the furnace body. The number of fixing rods is determined according to the size and weight of the heat storage body, that is, one or multiple rods can be set. The specific connection method and other settings adopt existing technology, so they will not be described in detail. It should be noted that these fixing rods need to be evenly distributed at the upper and lower ends of the heat storage body to ensure uniform force and maintain the balance and stability of the heat storage body.

[0017] Preferably, a temperature sensor and a pressure sensor are fixedly connected to the inner wall of the exhaust pipe near the bottom of the furnace body. The temperature and pressure sensors are electrically connected to a terminal device, which can receive data transmitted from the sensors in real time. The exhaust pipe, located at the bottom of the furnace body, is the channel through which the treated waste gas exits the furnace. The temperature and pressure sensors are installed on the inner wall of the exhaust pipe near the bottom of the furnace body, where the waste gas has just completed its thermal oxidation process within the furnace; their temperature and pressure directly reflect the processing status within the furnace. The temperature and pressure sensors are installed adjacent to each other and will not interfere with each other.

[0018] Preferably, the slag collection box has an opening at the top and is embedded in the bottom of the impurity separation equipment, with the exhaust port opening located at the top of the slag collection box. A vent is located on the top left side of the furnace body, and an exhaust pipe is fixedly connected to the exhaust port, with the other end of the exhaust pipe fixedly connected to the vent. In other words, the slag collection box resembles a drawer, embedded in the bottom of the impurity separation equipment, capable of catching impurities falling from above. Its edges have good sealing properties with the bottom inner wall of the impurity separation equipment, preventing exhaust gas leakage from the gap between the slag collection box and the equipment. It also ensures that the separated impurities fall accurately into the slag collection box. The slag collection box is detachable, meaning it can be periodically removed. Therefore, sliding rails are fixedly installed on both sides of the slag collection box, with a design similar to a drawer. This utilizes existing technology and will not be described in detail.

[0019] After the waste gas undergoes impurity separation and heat exchange within the impurity separation device, it needs to be discharged into the furnace body. The exhaust port is located above the slag collection box to ensure that the waste gas has been fully treated before discharge, with most impurities settling into the slag collection box, reducing the possibility of impurities entering the furnace body with the waste gas. The preheated and separated waste gas is connected to the top of the furnace body, meaning the pipe between the impurity separation device and the furnace body is inclined upwards. During waste gas transport, impurities in the waste gas will be drawn downwards along the pipe under gravity, entering the slag collection box for further separation.

[0020] (III) Beneficial Effects

[0021] (1) Through the dual filtration and separation of the impurity separation equipment and the dust removal equipment, the amount of impurities entering the furnace body and the heat storage body is greatly reduced. In particular, the guide plate and heat exchange tube in the impurity separation equipment further improve the impurity separation effect, effectively prevent the accumulation of impurities in the heat storage body, ensure the normal heat exchange function of the heat storage body, extend the service life of the heat storage body, and reduce the frequency of equipment maintenance caused by blockage.

[0022] (2) The spiral heat exchange tube realizes the preliminary preheating of the waste gas in the impurity separation equipment. In addition, the layered structure of the heat storage body and the design of its surface wave pattern greatly increase the contact area and contact time between the waste gas and the heat storage body, thereby improving the heat exchange efficiency, which helps the high-temperature oxidation reaction in the thermal oxidation furnace to proceed fully, improves energy utilization efficiency, and reduces energy consumption.

[0023] (3) The slag collection box of the impurity separation equipment is detachable, which facilitates the operator to clean the collected impurities regularly and ensures the continuous and stable operation of the equipment. Temperature and pressure sensors can provide real-time feedback on the status of the exhaust gas, providing a strong basis for equipment operation monitoring and fault diagnosis, helping to identify and solve problems in a timely manner, and ensuring the stable operation of the thermal oxidizer. Attached Figure Description

[0024] Figure 1 This is a structural diagram of the present invention;

[0025] Figure 2 This is a schematic diagram of the impurity separation equipment in this utility model;

[0026] Figure 3 This is a schematic diagram of the heat storage body in this utility model;

[0027] Figure 4 This is a schematic diagram of the dust removal equipment in this utility model.

[0028] In the diagram: 1-furnace body, 11-vent, 2-heat regenerator, 21-outer layer, 22-inner layer, 23-fixed rod, 3-exhaust pipe, 31-temperature sensor, 32-pressure sensor, 4-impurity separation equipment, 41-guide plate, 42-heat exchange tube, 43-slag collection box, 44-exhaust port, 45-exhaust pipe, 5-dust removal equipment, 51-air inlet, 52-cyclone. Detailed Implementation

[0029] The following will refer to the appendix in the embodiments of this utility model. Figure 1 -Appendix Figure 4The technical solutions in the embodiments of this utility model are clearly and completely described. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0030] Example 1: As Figure 1 As shown, the first specific embodiment of this utility model provides an RTO thermal oxidizer with a heat storage anti-clogging structure, including a furnace body 1, a heat storage body 2 disposed inside the furnace body 1, an exhaust pipe 3 fixedly connected to the bottom of the furnace body 1, an impurity separation device 4 connected to the top of the furnace body 1 via a pipe, and a dust removal device 5 connected to the top of the impurity separation device 4 via a pipe. The dust removal device 5 has an air inlet 51 at the top, a cyclone 52 fixed inside, and an air outlet 53 on the right side. The impurity separation device 4 has several guide plates 41 arranged alternately on the left and right sides inside, and a heat exchange tube 42 spirally arranged in the upper part inside. A slag collection box 43 is detachably connected to the bottom of the impurity separation device 4, and an exhaust port 44 is provided at the bottom right side. By setting up the impurity separation device 4 and the dust removal device 5, impurities and dust can be removed to the maximum extent before the exhaust gas enters the furnace body, reducing the risk of blockage of the heat storage body 2. Keeping the heat storage body 2 unobstructed can ensure the normal operation of the thermal oxidizer and improve the stability and reliability of the equipment. The guide plate 41 and heat exchange tube 42 in the impurity separation device 4, along with the cyclone 51 in the dust removal device 5, work together to perform multi-stage treatment of the waste gas. The guide plate 41 makes the flow of waste gas within the impurity separation device 4 more complex, increasing the contact time and area between the waste gas and the equipment, thus improving the impurity separation effect. Simultaneously, the heat exchange tube 42 can preheat the waste gas, optimizing the subsequent thermal oxidation process. The cyclone 51 utilizes centrifugal force to efficiently remove dust and other particulate matter from the waste gas. Thus, the waste gas, after multiple treatments, is purer and can undergo a more complete oxidation reaction upon entering the thermal oxidizer, improving the purification quality of the waste gas and reducing environmental pollution.

[0031] Each guide plate 41 has one end fixedly connected to the inner wall of the impurity separation device 4, and the other end inclined downwards. The guide plates 41 on the left and right sides do not contact each other, and the surface of each guide plate 41 is decorated with a wavy texture. The fact that one end of the guide plate is fixed to the inner wall of the impurity separation device and the other end is inclined downwards allows the exhaust gas entering the impurity separation device to flow along a specific path. When the exhaust gas encounters the guide plate, it is forced to change its flow direction, forming an orderly airflow channel, thereby extending the residence time of the exhaust gas in the device. This allows impurities in the exhaust gas to have more opportunities to interact with the internal structure of the device, improving the efficiency of impurity separation. At the same time, because the guide plates on the left and right sides do not contact each other, it avoids the exhaust gas from passing directly between the guide plates and forming a short circuit, thus ensuring that the exhaust gas flows fully through the entire impurity separation device and is evenly distributed inside the device, making the impurity separation process more thorough and complete. Furthermore, the wavy texture on the surface of the guide plate 41 significantly increases the contact area between the guide plate and the exhaust gas. When the exhaust gas flows through the guide plate 41, impurities are more likely to adhere to the recesses in the texture, thus achieving better impurity separation. It also creates a certain degree of disturbance to the exhaust gas, making it easier for impurities in the exhaust gas to collide and aggregate under the influence of airflow. Under the influence of gravity, they settle more quickly into the slag collection box 43 at the bottom of the equipment, further improving the impurity removal efficiency. Therefore, dust particles in the exhaust gas are less likely to form stable accumulations on the surface of the guide plate 41, effectively preventing clogging caused by excessive dust accumulation and ensuring the long-term stable operation of the impurity separation equipment. Even if a small amount of dust adheres to the surface of the guide plate 41, under the continuous impact and vortex effect of the exhaust gas, the dust is more easily carried back into the airflow, flowing with the exhaust gas and eventually collected in the slag collection box 43, achieving a certain degree of self-cleaning function.

[0032] The outer wall of the heat exchange tube 42 does not contact the inner wall of the impurity separation device 4, and the top end of the heat exchange tube 42 penetrates the top end of the impurity separation device 4 and extends into the pipe fixedly connected to the dust removal device 5. The fact that the outer wall of the heat exchange tube 42 does not contact the inner wall of the impurity separation device 4 allows for sufficient airflow around the heat exchange tube 42, increasing the contact area between the heat exchange tube 42 and the exhaust gas, thereby more effectively transferring heat and improving heat exchange efficiency. This allows the exhaust gas to form a relatively complex convection around the heat exchange tube 42, promoting thorough mixing and heat exchange. The heat exchange tube 42 can better absorb or release heat, allowing the exhaust gas to be more fully preheated before entering the subsequent dust removal device 5 and thermal oxidizer, optimizing the energy utilization efficiency of the entire exhaust gas treatment system. Furthermore, the heat exchange tube 42 will experience thermal expansion and contraction due to temperature changes during operation. By maintaining a certain distance between the heat exchange tube and the inner wall of the impurity separation equipment, and fixing it to the dust removal equipment only at the top, the stress generated by the thermal expansion and contraction of the heat exchange tube can be effectively prevented from being directly transmitted to the inner wall of the impurity separation equipment. This reduces the risk of equipment damage caused by thermal stress and extends the service life of the equipment.

[0033] The heat storage body 2 has a layered structure, comprising an outer layer 21 and an inner layer 22. Both the inner and outer surfaces of the outer layer 21 and the inner layer 22 are textured with wavy patterns. This layered design increases the overall surface area of ​​the heat storage body 2, providing a larger heat storage area within the same volume. This allows for the absorption and storage of more heat, improving the heat storage capacity. Furthermore, the wavy patterns on both the inner and outer surfaces of the outer layer 21 and the inner layer 22 significantly increase the contact area between the heat storage body and the airflow. When hot air passes through the heat storage body, more heat is absorbed and stored by the surface, enhancing the heat exchange efficiency. Simultaneously, the wavy patterns guide and disturb the airflow. When airflow enters the heat storage body 2, guided by the patterns, it flows along a specific path, forming a more uniform airflow distribution. This allows all parts of the heat storage body to participate more fully in the heat exchange process, improving the overall performance of the heat storage body.

[0034] A fixing rod 23 is fixedly connected to the middle of the upper and lower ends of the heat storage body 2. The other end of the fixing rod 23 is fixedly connected to the middle of the inner wall of the upper and lower ends of the furnace body 1, respectively. The fixing rod 23 firmly fixes the heat storage body 2 inside the furnace body 1, clearly defining the position of the heat storage body 2 and preventing its displacement within the furnace body 1, ensuring that the heat storage body is always in the optimal working position. Furthermore, when the furnace body 1 is subjected to external impact forces or internal airflow generating significant pressure, the fixing rod 23 can withstand and transmit these forces, protecting the heat storage body 2 from damage. At the same time, the fixing rod 23 is located in the middle of the upper and lower ends of the heat storage body 2, which helps the heat storage body 2 to be heated evenly within the furnace body. When the thermal oxidizer is working, heat is transferred to the heat storage body through the furnace body. The presence of the fixing rod allows the heat to be distributed more evenly at the upper and lower ends of the heat storage body, thereby promoting a uniform temperature rise throughout the heat storage body 2 and improving the heat storage efficiency and heat exchange effect of the heat storage body 2.

[0035] The slag collection box 43 has an open top and is embedded at the bottom of the impurity separation device 4, while the exhaust port 44 is located at the top of the slag collection box 43. Because the slag collection box 43 is open at the top and located at the bottom of the impurity separation device 4, impurities in the exhaust gas, after being separated by structures such as the guide plate, can naturally settle into the slag collection box under the action of gravity. This design, based on the principle of gravity settling, makes the impurity collection process more direct and efficient, effectively removing most of the solid particulate impurities in the exhaust gas and improving the purification effect. Furthermore, when impurities accumulate to a certain level in the top-opening slag collection box 43, its detachable design allows for direct removal and cleaning without complex tools or disassembling numerous equipment parts. This simple and quick operation reduces the difficulty and workload of equipment maintenance. This allows the cleaning of the slag collection box to be carried out without affecting the normal operation of the entire exhaust gas treatment system, greatly reducing equipment downtime and improving equipment operating efficiency and production benefits.

[0036] A vent 11 is located on the top left side of the furnace body 1, and an exhaust pipe 45 is fixedly connected to the exhaust port 44. The other end of the exhaust pipe 45 is fixedly connected to the air inlet 11. The pre-treated waste gas discharged from the impurity separation device 4 is reintroduced into the vent 11 of the furnace body 1 through the exhaust pipe 45, allowing the waste gas to participate in the thermal oxidation reaction again. This fully treats the waste gas, further improving energy utilization and reducing energy consumption and operating costs. It also provides a more stable airflow environment for the thermal oxidation reaction, helping to maintain the temperature and reaction conditions inside the furnace, allowing the thermal oxidation reaction to proceed more fully and stably, thereby improving the waste gas treatment effect and purification efficiency, and reducing the emission of harmful substances.

[0037] Working Principle: During operation, exhaust gas enters the dust removal equipment 5 through the inlet 51, forming a high-speed rotating airflow within the cyclone separator 52. Large particles of impurities are thrown towards the inner wall of the dust removal equipment 5 under centrifugal force, and then fall downwards under gravity, completing the initial impurity removal. The pre-purified exhaust gas then enters the impurity separation equipment 4 through a pipeline. In the impurity separation equipment 4, part of the exhaust gas flows along a complex path under the guidance of the guide plate 41. Due to the wavy texture and inclined design on the surface of the guide plate 41, the exhaust gas generates strong vortices and turbulence. Under the combined action of gravity and airflow turbulence, impurities in the exhaust gas are deposited at the bottom of the impurity separation equipment 4 and finally fall into the slag collection box 43. At the same time, another part of the exhaust gas flows within the spiral heat exchange tube 42, exchanging heat with the heat exchange tube 42, raising the exhaust gas temperature and achieving preheating of the exhaust gas. After impurity separation and preheating, the waste gas enters the vent 11 of the furnace body 1 through the exhaust pipe 45 from the exhaust port 44 of the impurity separation device 4, and then enters the furnace body 1. Inside the furnace body 1, the waste gas undergoes sufficient heat exchange with the heat storage body 2. The heat storage body 2 absorbs the heat of the waste gas, further increasing the waste gas temperature. Harmful substances in the waste gas undergo an oxidation reaction inside the furnace body 1 and are converted into harmless substances. After this, the waste gas after the thermal oxidation reaction is discharged from the exhaust pipe 3 at the bottom of the furnace body 1. During the waste gas discharge process, the temperature sensor 31 and pressure sensor 42 on the inner wall of the exhaust pipe 3 monitor the temperature and pressure of the waste gas in real time and provide feedback. When the temperature or pressure is abnormal, the operator can promptly check and adjust the equipment based on the data fed back by the sensors.

Claims

1. An RTO thermal oxidation furnace with heat accumulator anti-clogging structure, comprising a furnace body (1), a heat accumulator (2) is arranged inside the furnace body (1), and an air outlet pipe (3) is fixedly connected to the bottom end of the furnace body (1), characterized in that, The top end of the furnace body (1) is connected with an impurity separation device (4) through a pipeline, the top end of the impurity separation device (4) is connected with a dust removal device (5) through a pipeline, the left top of the dust removal device (5) is provided with an air inlet (51), a cyclone cylinder (52) is fixedly arranged in the dust removal device (5), the top middle of the dust removal device (5) is provided with an air outlet (53), a plurality of guide plates (41) are arranged in the impurity separation device (4) in an alternating manner, a heat exchange pipe (42) is arranged in the upper half of the impurity separation device (4) in a spiral shape, and a slag collecting box (43) is detachably connected to the bottom end of the impurity separation device (4).

2. The RTO thermal oxidation furnace with heat accumulator anti-clogging structure according to claim 1, characterized in that, One end of each of the guide plates (41) is fixedly connected with the inner wall of the impurity separation device (4), the other end is inclined downward, the left and right guide plates (41) are not in contact with each other, and the surface of each of the guide plates (41) is provided with a wave-shaped pattern.

3. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The outer wall of the heat exchange pipe (42) does not contact the inner wall of the impurity separation device (4), and the top end of the heat exchange pipe (42) penetrates the top end of the impurity separation device (4) and extends into the pipeline fixedly connected with the dust removal device (5).

4. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The heat storage body (2) has a layered structure and comprises an outer layer (21) and an inner layer (22), and the inner and outer surfaces of the outer layer (21) and the inner layer (22) are provided with wave-shaped patterns.

5. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The upper and lower ends of the heat storage body (2) are fixedly connected with a fixed rod (23) in the middle, and the other end of the fixed rod (23) is fixedly connected with the inner walls of the upper and lower ends of the furnace body (1).

6. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The temperature sensor (31) and the pressure sensor (32) are fixedly connected to the inner wall of one side of the outlet pipe (3) close to the bottom end of the furnace body (1).

7. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The slag collecting box (43) is embedded in the bottom of the impurity separation device (4) and has an open top end, and the exhaust port (44) is arranged on the upper part of the slag collecting box (43).

8. The RTO thermal oxidizer with anti-clogging structure of the heat accumulator according to claim 1, characterized in that, The top left of the furnace body (1) is provided with an air vent (11), the exhaust pipe (45) is fixedly connected to the exhaust port (44), and the other end of the exhaust pipe (45) is fixedly connected with the air vent (11).

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