A waste thermal destruction device

Abstract

This invention relates to the field of waste thermal destruction technology, and particularly to a waste thermal destruction device, comprising: a furnace body, which consists of a lower expanded diameter section and an upper cylindrical section, wherein the lower expanded diameter section forms a combustion chamber for burning and decomposing waste; a feed pipe is conductively connected to the center of the top of the upper cylindrical section, and a preheating pipe connected to the feed pipe is fixed inside the cylindrical section, forming a carbonization chamber for preheating and carbonizing waste; this invention divides the internal space of the furnace body into four functional areas through the preheating pipe and the partition pipe: a combustion chamber, a carbonization chamber, a flue gas passage, and a particle settling chamber. The flue gas generated in the combustion chamber flows sequentially through the flue gas passage and the particle settling chamber, and is finally discharged through the exhaust pipe. Based on the dust deflection mechanism set in the flue gas passage, large particles of fly ash are forced to fall to the bottom of the combustion chamber after impacting the wall and then being burned again, effectively blocking the upward path of the dust.

Description

Technical Field

[0001] This invention relates to the field of waste thermal destruction technology, specifically to a waste thermal destruction device. Background Technology

[0002] In the process of solid waste incineration, especially solid waste containing metals, such as discarded bullets, the lack of effective smoke interception and recirculation combustion technologies will cause multiple environmental and health risks. Incompletely burned smoke carrying ultrafine particles and attached dioxins and heavy metals (lead, mercury, cadmium, etc.) will be directly released into the atmosphere and enter the human body through respiration or the food chain, which may lead to health risks. At the same time, the smoke will continue to catalyze the resynthesis of dioxins in the low temperature range of 250-400℃, causing long-term pollution of soil and water bodies, increasing the amount of fly ash generated, and resulting in high hazardous waste disposal costs.

[0003] Chinese patent application CN104296148B discloses a fixed grate incinerator, which includes at least a main combustion chamber and a fixed grate. The grate is arranged at an angle, with its high end forming the material input end and its low end forming the ash outlet end for the ash residue after combustion. The ash outlet end is connected to an ash discharge assembly. A hot air chamber is arranged below the main combustion chamber, and the hot air supply path runs through the fixed grate. The fixed grate incinerator also includes a push rod and a power unit. The maximum lift of the push rod passes through the material layer on the fixed grate. The push rod assembly also includes a bushing of a preset length. One end of the bushing passes through and is fixed to the fixed grate along the direction of the push rod's movement, and there is a ventilation gap between the bushing and the push rod for air passage. The other end of the bushing connects to the external environment and / or an air-cooled chamber. This technical solution has high material combustion efficiency, good component reliability, and an effectively extended service life.

[0004] As mentioned in the above application, the existing waste thermal incineration device discharges flue gas directly through the set exhaust pipe, and the particulate matter in the flue gas is purified by subsequent purification methods. However, when thermally incinerating solid waste, the incompletely burned flue gas carries ultrafine particulate matter and dioxins and heavy metals (lead, mercury, cadmium, etc.) attached to it, which makes it difficult to purify and treat it in the future, and increases the amount of fly ash generated, resulting in low energy recovery efficiency. Summary of the Invention

[0005] To address the aforementioned problems, the present invention provides a waste thermal destruction device.

[0006] This invention adopts the following technical solution: a waste thermal destruction device, comprising:

[0007] The furnace body consists of a lower expanded section and an upper cylindrical section. The lower expanded section forms a combustion chamber for burning and decomposing waste.

[0008] A feed pipe is connected to the center of the top of the upper cylindrical section. A preheating pipe that is connected to the feed pipe is fixed inside the cylindrical section. A carbonization chamber is formed inside the preheating pipe for preheating and carbonizing the waste.

[0009] A partition pipe is welded to the outside of the preheating pipe inside the cylindrical section. A sealing cover is movably installed at the bottom end of the partition pipe. A flue gas channel is formed between the partition pipe and the preheating pipe. A flue gas deflection mechanism is installed in the flue gas channel. The flue gas deflection mechanism is used to deflect and re-burn the particulate matter in the flue gas, reduce the flow rate of the flue gas, and improve the heat exchange effect between the flue gas and the waste in the preheating pipe.

[0010] A particle settling chamber is formed between the partitioned pipe and the outer wall of the cylindrical section, which is used to settle and preserve particulate matter in the flue gas.

[0011] As a further description of the above technical solution: a sealing assembly is provided at the bottom end of the preheating pipe. The sealing assembly includes a sealing seat with a conical structure and a driving rod. The driving rod is fixed at the top center of the sealing seat, and the top end of the driving rod extends to the outside through the feed pipe.

[0012] As a further description of the above technical solution: multiple limiting rods are inserted at equal intervals on the upper surface of the sealing cover, the top ends of the multiple limiting rods extend outward through the partition tube and the cylindrical section in sequence, and an annular frame is welded to the top ends of the multiple limiting rods.

[0013] As a further description of the above technical solution: a driving mechanism is provided on the top outer wall of the cylindrical section, and the annular frame is connected to the sealing component through a linkage component. When the driving mechanism drives the sealing component to open, allowing the waste in the carbonization chamber to fall into the combustion chamber for combustion and decomposition, the linkage component drives the sealing cover to move down to the expansion section, so that an annular gap is formed between the sealing cover and the inner wall of the expansion section. The particles accumulated in the particle settling chamber fall into the combustion chamber to achieve secondary combustion.

[0014] As a further description of the above technical solution: the driving mechanism is an electric telescopic rod or a hydraulic telescopic rod, the bottom end of the driving mechanism is fixed on the upper surface of the cylindrical section, and the top end of the driving mechanism is fixedly installed on the lower surface of the ring frame;

[0015] The linkage assembly includes an upright and a connecting rod. The upright is vertically fixed to the upper surface of the ring frame by welding or bolting. The top of the upright is vertically welded to the connecting rod, and the other end of the connecting rod is welded to the outer wall of the drive rod.

[0016] As a further description of the above technical solution: multiple dust return mechanisms are provided, and the multiple dust return mechanisms are arranged at equal intervals from bottom to top in the flue gas channel;

[0017] The flue gas deflection mechanism includes an inner ring fixedly sleeved on the outer wall of the preheating pipe and an outer ring welded and fixed on the inner wall of the partition pipe. The inner and outer rings are concentric rings, and the inner diameter of the outer ring is larger than that of the inner ring. A swirl plate is welded between the inner wall of the outer ring and the inner wall of the inner ring. Multiple swirl plates are arranged in a ring array in the gap between the inner and outer rings. The inclination angle of the swirl plates is 30-45 degrees. When the flue gas enters the flue gas deflection mechanism, centrifugal force is generated, causing large particles of fly ash to collide with the wall and fall into the bottom combustion chamber, blocking the upward path of the flue gas and realizing the deflection and re-combustion of particulate matter in the flue gas.

[0018] As a further description of the above technical solution: an S-shaped air outlet pipe is connected to the outer wall of the cylindrical section at the middle position of the particle settling chamber. The bottom end of the air outlet pipe extends into the particle settling chamber and is fixed with a filter cover, which is a hemispherical structure. A vent hole is provided through the top of the outer wall of the partition pipe.

[0019] Multiple exhaust pipes are provided, and the multiple exhaust pipes are distributed in a ring at equal intervals around the outer perimeter of the cylindrical section. The top of the multiple exhaust pipes is connected to a ring-shaped manifold, and an exhaust pipe is connected to the ring-shaped manifold. The multiple exhaust pipes are provided to reduce the flue gas velocity in the particle settling chamber and improve the settling effect of the particles.

[0020] As a further description of the above technical solution: the inner diameter of the annular manifold is larger than the inner diameter of the outlet pipe.

[0021] As a further description of the above technical solution: a sealing cap is bolted to the top opening of the feed pipe, and a circular hole for use with the drive rod is opened at the center of the upper surface of the sealing cap. A ceramic fiber sealing layer is provided at the connection between the drive rod and the circular hole.

[0022] As a further description of the above technical solution: a waste thermal destruction device also includes a base, the furnace body is fixed on the base by a bracket, a burner is installed on the base, and an air supply device is installed above the burner.

[0023] Beneficial effects:

[0024] This invention provides a waste thermal destruction device that divides the internal space of the furnace into four functional areas through preheating pipes and partitioning pipes: a combustion chamber, a carbonization chamber, a flue gas passage, and a particle settling chamber. The flue gas generated in the combustion chamber flows sequentially through the flue gas passage and the particle settling chamber, and is finally discharged through the exhaust pipe. A dust reversal mechanism installed in the flue gas passage forces large fly ash particles to impact the wall and fall to the bottom of the combustion chamber for re-combustion, effectively blocking the upward path of the dust. Furthermore, the dust reversal mechanism... This system reduces the flow rate of flue gas, improves its heat exchange with the preheating tube, and carbonizes the waste to be treated in the preheating tube. At the same time, unintercepted fine particles settle and are stored in the particle settling chamber. This graded treatment mechanism reduces the fly ash content in the flue gas, preventing unburned dust from carrying dioxins, heavy metals such as lead, mercury, and cadmium into the atmosphere. It reduces environmental pollution, lowers the complexity and cost of subsequent flue gas treatment, and reduces the amount of fly ash in the flue gas, further reducing the complexity and cost of subsequent flue gas treatment.

[0025] When the drive mechanism retracts, it causes the sealing seat to detach from the bottom of the preheating pipe. The waste preheated in the carbonization chamber automatically falls into the combustion chamber by gravity, saving additional energy consumption for conveying. At the same time, the linkage component synchronously drives the sealing cover to descend to the expansion section to form an annular gap, forcing the pollutant-containing particles accumulated in the particle settling chamber to fall into the combustion chamber for secondary combustion, decomposing dioxins. Thus, the pollutant-containing particles accumulated in the particle settling chamber are treated simultaneously each time material is fed. Attached Figure Description

[0026] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0027] Figure 1 This invention provides an internal flue gas flow diagram of a waste thermal destruction device.

[0028] Figure 2 This is a cross-sectional schematic diagram of a waste thermal destruction device provided in an embodiment of the present invention;

[0029] Figure 3 This is a schematic diagram of a waste thermal destruction device provided in an embodiment of the present invention;

[0030] Figure 4 This is a schematic diagram of the connection structure between the partition tube and the sealing cover provided in an embodiment of the present invention;

[0031] Figure 5 This is a schematic diagram of the smoke and dust recirculation mechanism provided in an embodiment of the present invention;

[0032] Figure 6 Provided for embodiments of the present invention Figure 2 Enlarged view of area A in the image.

[0033] Reference numerals: 1. Furnace body; 11. Expanding diameter section; 12. Cylindrical section; 100. Combustion chamber; 200. Carbonization chamber; 300. Flue gas passage; 400. Particle settling chamber; 121. Feed pipe; 1211. Sealing cover; 122. Preheating pipe; 123. Zoning pipe; 1234. Vent hole; 124. Sealing cover; 1241. Limiting rod; 1242. Annular frame; 125. Flue dust reversal mechanism; 1251. Inner ring; 1252. Outer ring; 1253. Swirl plate; 126. Drive mechanism; 2. Sealing assembly; 21. Sealing seat; 22. Drive rod; 3. Exhaust pipe; 301. Vertical rod; 302. Connecting rod; 31. Filter cover; 32. Annular manifold; 33. Exhaust pipe; 4. Base; 5. Burner; 6. Air supply device. Detailed Implementation

[0034] To make the technical means, creative features, objectives, and effects of this invention readily understandable, the invention is further described below with reference to specific illustrations. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0035] Example 1

[0036] Please see Figures 1-6 The present invention provides a technical solution: a waste thermal destruction device, which is used to destroy solid waste by high temperature. The solid waste includes, but is not limited to, solid substances containing deactivated gunpowder, such as deactivated ammunition. Figure 1 The direction of the middle arrow indicates the flow direction of the smoke produced after the waste is burned;

[0037] The waste thermal destruction device includes a furnace body 1, which consists of a lower expanding section 11 and an upper cylindrical section 12. The lower expanding section 11 forms a combustion chamber 100 for burning and decomposing waste.

[0038] In this embodiment, an electric heating system is installed in the combustion chamber 100 to ensure that the bullet ignites completely and the propellant burns completely.

[0039] In this embodiment, the furnace body 1 is made of thickened 304 stainless steel, and the insulation material is composed of refractory bricks, flame-retardant heat insulation boards, etc., which are sturdy and durable and can be recycled, reducing noise.

[0040] A feed pipe 121 is connected to the center of the top of the upper cylindrical section 12. A preheating pipe 122 that is connected to the feed pipe 121 is fixed inside the cylindrical section 12. A carbonization chamber 200 is formed inside the preheating pipe 122 for preheating and carbonizing waste.

[0041] In this embodiment, a feeding system is provided on the outside of the furnace body 1 to transport solid waste into the feeding pipe 121. The feeding system consists of a conveyor belt, a 45° bent feeding hopper and a heating pipe. The bent feeding hopper reduces the rolling speed of the bullets to prevent the bullets from rebounding from the feeding port during the destruction process. The pipe has a spiral groove to control the heating time and smoothly transport the waste.

[0042] A partition pipe 123 is welded inside the cylindrical section 12 on the outside of the preheating pipe 122. A sealing cover 124 is movably installed at the bottom end of the partition pipe 123. A flue gas passage 300 is formed between the partition pipe 123 and the preheating pipe 122. A flue gas deflection mechanism 125 is installed inside the flue gas passage 300. The flue gas deflection mechanism 125 is used to deflect and re-burn the particulate matter in the flue gas, reduce the flow rate of the flue gas, and improve the heat exchange effect between the flue gas and the waste in the preheating pipe 122.

[0043] A particle settling chamber 400 is formed between the partition pipe 123 and the outer wall of the cylindrical section 12, which is used to settle and preserve particulate matter in flue gas.

[0044] Multiple dust return mechanisms 125 are provided, and the multiple dust return mechanisms 125 are arranged at equal intervals from bottom to top in the flue gas channel 300;

[0045] The flue gas deflection mechanism 125 includes an inner ring 1251 fixedly sleeved on the outer wall of the preheating pipe 122 and an outer ring 1252 welded and fixed on the inner wall of the partition pipe 123. The inner ring 1251 and the outer ring 1252 are concentric rings, and the inner diameter of the outer ring 1252 is larger than the inner diameter of the inner ring 1251. A swirl plate 1253 is welded between the inner wall of the outer ring 1252 and the inner wall of the inner ring 1251. Multiple swirl plates 1253 are provided, and the multiple swirl plates 1253 are arranged in a ring array in the gap between the inner ring 1251 and the outer ring 1252. The inclination angle of the swirl plate 1253 is 30 degrees to 45 degrees. When the flue gas enters the flue gas deflection mechanism 125, centrifugal force is generated, causing large particles of fly ash to hit the wall and fall to the bottom combustion chamber 100, blocking the upward path of the flue gas and realizing the deflection and re-combustion of particulate matter in the flue gas.

[0046] Specifically, during use, when waste is discharged into the combustion chamber 100 through the feed pipe 121 and preheating pipe 122 for combustion and decomposition, waste to be burned and decomposed can be injected into the preheating pipe 122 again through the feed pipe 121. When the waste is burned and decomposed in the combustion chamber 100, the flue gas generated in the combustion chamber 100 flows sequentially through the flue gas passage 300 and the particle settling chamber 400, and is finally discharged through the outlet pipe 3. When the flue gas enters the flue gas passage 300, it will react with the preheating pipe 122... Heat pipe 122 performs heat exchange and carbonizes the waste in carbonization chamber 200. Through the setting of flue gas deflection mechanism 125, when the flue gas enters the flue gas deflection mechanism 125, centrifugal force is generated, causing large particles of fly ash to hit the wall and fall into the bottom combustion chamber 100, blocking the upward path of the flue gas. This achieves deflection and re-combustion of particulate matter in the flue gas, which can re-combust large particles in the flue gas and reduce the flow rate of the flue gas, thereby improving its heat exchange effect with preheating pipe 122.

[0047] In this embodiment, the internal space of the furnace body 1 is divided into four functional areas by the preheating pipe 122 and the partition pipe 123: combustion chamber 100, carbonization chamber 200, flue gas passage 300, and particle settling chamber 400. The flue gas generated in the combustion chamber 100 flows sequentially through the flue gas passage 300 and the particle settling chamber 400, and is finally discharged through the exhaust pipe 3. Through the dust reversal mechanism 125 set in the flue gas passage 300, large particles of fly ash are forced to fall to the bottom of the combustion chamber 100 after hitting the wall and then burning again, effectively blocking the upward path of the dust. Secondly, through the flue gas reversal mechanism 125 set in the flue gas passage 300, large particles of fly ash are forced to fall to the bottom of the combustion chamber 100 after hitting the wall and then burning again. The dust return mechanism 125 reduces the flow rate of flue gas, improves its heat exchange with the preheating tube 122, and carbonizes the waste to be treated in the preheating tube 122. At the same time, unintercepted fine particles settle and are stored in the particle settling chamber 400. This graded treatment mechanism significantly reduces the fly ash content in the flue gas, preventing unburned dust from carrying dioxins, heavy metals such as lead, mercury, and cadmium into the atmosphere. While reducing environmental pollution, it also reduces the complexity and cost of subsequent flue gas treatment and reduces the amount of fly ash in the flue gas, further reducing the complexity and cost of subsequent flue gas treatment.

[0048] Example 2

[0049] This embodiment adds a sealing component 2 and a linkage component to the above embodiment.

[0050] A waste thermal destruction device has a sealing assembly 2 at the bottom end of a preheating pipe 122. The sealing assembly 2 includes a sealing seat 21 with a conical structure and a driving rod 22. The driving rod 22 is fixed at the top center of the sealing seat 21, and the top end of the driving rod 22 extends to the outside through the feed pipe 121.

[0051] It should be noted that the sealing component 2 is used to seal the bottom end of the preheating tube 122, and the conical sealing seat 21 is designed so that when the sealing seat 21 moves down out of the bottom end of the preheating tube 122, the waste stored inside it will automatically fall down under the action of gravity.

[0052] Optionally, dispersion teeth or dispersion blades can be provided on the drive rod 22. When the sealing seat 21 is moved down by the drive rod 22, the dispersion teeth or dispersion blades can disperse the waste in the preheating pipe 122 and improve its falling effect.

[0053] Multiple limiting rods 1241 are inserted at equal intervals on the upper surface of the sealing cover 124. The top ends of the multiple limiting rods 1241 extend outward through the partition tube 123 and the cylindrical section 12 in sequence. A ring frame 1242 is welded to the top ends of the multiple limiting rods 1241.

[0054] A drive mechanism 126 is provided on the top outer wall of the cylindrical section 12. The annular frame 1242 is connected to the sealing component 2 through a linkage component. When the drive mechanism 126 drives the sealing component 2 to open, allowing the waste in the carbonization chamber 200 to fall into the combustion chamber 100 for combustion and decomposition, the linkage component drives the sealing cover 124 to descend to the expansion section 11, forming an annular gap between the sealing cover 124 and the inner wall of the expansion section 11, forcing the particles accumulated in the particle settling chamber 400 to fall into the combustion chamber 100, thus achieving secondary combustion.

[0055] The drive mechanism 126 is an electric telescopic rod or a hydraulic telescopic rod. The bottom end of the drive mechanism 126 is fixed to the upper surface of the cylindrical section 12, and the top end of the drive mechanism 126 is fixedly installed on the lower surface of the ring frame 1242.

[0056] The linkage assembly includes a vertical pole 301 and a connecting rod 302. The vertical pole 301 is vertically fixed to the upper surface of the ring frame 1242 by welding or bolting. The top end of the vertical pole 301 is vertically welded to the connecting rod 302, and the other end of the connecting rod 302 is welded to the outer wall of the drive rod 22.

[0057] An S-shaped air outlet pipe 3 is connected to the outer wall of the cylindrical section 12 at the middle section of the particle settling chamber 400. The bottom end of the air outlet pipe 3 extends into the particle settling chamber 400 and is fixed with a filter cover 31, which is a hemispherical structure. A vent hole 1234 is opened through the top of the outer wall of the partition pipe 123.

[0058] Specifically, based on Example 1, when the waste in the combustion chamber 100 has finished burning, and the waste in the carbonization chamber 200 needs to be sent back into the combustion chamber 100, the control drive mechanism 126 retracts, driving the annular frame 1242 to move downwards. The annular frame 1242 moves downwards, driving the drive rod 22 to move downwards through the upright rod 301 and the connecting rod 302. The drive rod 22 moves downwards, driving the sealing seat 21 to move downwards. When the sealing seat 21 moves downwards out of the bottom end of the preheating pipe 122, the waste stored inside it falls automatically under the action of gravity. When the annular frame 1242 moves downwards, the limiting rod 1241 moves downwards simultaneously, and the sealing cover 124 moves downwards to the expansion section 11, so that an annular gap is formed between the sealing cover 124 and the inner wall of the expansion section 11, forcing the particles accumulated in the particle settling chamber 400 to fall into the combustion chamber 100, realizing secondary combustion.

[0059] In this embodiment, when the drive mechanism 126 retracts, it causes the sealing seat 21 to detach from the bottom of the preheating pipe 122. The preheated waste in the carbonization chamber 200 automatically falls into the combustion chamber 100 by gravity, saving additional conveying energy consumption. At the same time, the linkage component drives the sealing cover 124 to descend to the expansion section 11 to form an annular gap, forcing the pollutant-containing particles accumulated in the particle settling chamber 400 to fall into the combustion chamber 100 for secondary combustion, decomposing dioxins and reducing fly ash. Thus, the pollutant-containing particles accumulated in the particle settling chamber 400 are treated simultaneously each time material is fed.

[0060] Example 3

[0061] In a waste thermal destruction device, a plurality of vent pipes 3 are provided, and the plurality of vent pipes 3 are distributed in a ring at equal intervals around the outer periphery of the cylindrical section 12. The top ends of the plurality of vent pipes 3 are connected to a ring manifold 32, and an exhaust pipe 33 is connected to the ring manifold 32.

[0062] It should be noted that the multiple exhaust pipes 3 are used to reduce the flue gas velocity in the particle settling chamber 400 and improve the settling effect of particulate matter.

[0063] The inner diameter of the annular manifold 32 is larger than the inner diameter of the outlet pipe 3.

[0064] A sealing cap 1211 is bolted to the top opening of the feed pipe 121. A circular hole for use with the drive rod 22 is opened at the center of the upper surface of the sealing cap 1211. A ceramic fiber sealing layer is provided at the connection between the drive rod 22 and the circular hole.

[0065] A waste thermal destruction device also includes a base 4, a furnace body 1 is fixed on the base 4 by a bracket, a burner 5 is installed on the base 4, and an air supply device 6 is installed above the burner 5.

[0066] Specifically, the air supply device 6 is equipped with an air intake fan (not shown in the attached figure), and the air supply device 6 is connected to the combustion chamber 100 through an air supply pipe. An air inlet is provided on the outer wall of the air supply device 6.

[0067] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A waste thermal destruction device, characterized in that, include: The furnace body (1) consists of a lower expansion section (11) and an upper cylindrical section (12), wherein the lower expansion section (11) forms a combustion chamber (100) for burning and decomposing waste. A feed pipe (121) is connected to the center of the top of the cylindrical section (12). A preheating pipe (122) that is connected to the feed pipe (121) is fixed inside the cylindrical section (12). A carbonization chamber (200) is formed inside the preheating pipe (122) for preheating and carbonizing waste. A partition pipe (123) is welded inside the cylindrical section (12) on the outside of the preheating pipe (122). A sealing cover (124) is movably provided at the bottom end of the partition pipe (123). A flue gas passage (300) is formed between the partition pipe (123) and the preheating pipe (122). A flue gas deflection mechanism (125) is provided inside the flue gas passage (300). The flue gas deflection mechanism (125) is used to deflect and re-burn the particulate matter in the flue gas, thereby reducing the flow rate of the flue gas. A particle settling chamber (400) is formed between the partition pipe (123) and the outer wall of the cylindrical section (12) for settling and preserving particulate matter in flue gas; Multiple dust return mechanisms (125) are provided, and the multiple dust return mechanisms (125) are arranged at equal intervals from bottom to top in the flue gas channel (300); The dust recirculation mechanism (125) includes an inner ring (1251) fixedly sleeved on the outer wall of the preheating pipe (122) and an outer ring (1252) welded and fixed on the inner wall of the partition pipe (123). The inner ring (1251) and the outer ring (1252) are concentric rings, and the inner diameter of the outer ring (1252) is larger than the inner diameter of the inner ring (1251). A swirl plate (1253) is welded between the inner wall of the outer ring (1252) and the inner wall of the inner ring (1251). Multiple swirl plates (1253) are provided, and the multiple swirl plates (1253) are arranged in a ring array in the gap between the inner ring (1251) and the outer ring (1252). The inclination angle of the swirl plates (1253) is 30 degrees to 45 degrees. When the flue gas enters the flue gas deflection mechanism (125), centrifugal force is generated, causing large particles of fly ash to hit the wall and fall to the bottom combustion chamber (100), blocking the upward path of the flue gas and realizing the deflection and re-combustion of particulate matter in the flue gas.

2. The waste thermal destruction device according to claim 1, characterized in that, The bottom end of the preheating pipe (122) is provided with a sealing assembly (2). The sealing assembly (2) includes a sealing seat (21) with a conical structure and a driving rod (22). The driving rod (22) is fixed at the top center of the sealing seat (21), and the top end of the driving rod (22) extends to the outside through the feed pipe (121).

3. The waste thermal destruction device according to claim 2, characterized in that, The upper surface of the sealing cover (124) is provided with a plurality of limiting rods (1241) inserted at equal intervals. The top ends of the plurality of limiting rods (1241) extend outward through the partition tube (123) and the cylindrical section (12) in sequence. The top ends of the plurality of limiting rods (1241) are welded with an annular frame (1242).

4. The waste thermal destruction device according to claim 3, characterized in that, A drive mechanism (126) is provided on the top outer wall of the cylindrical section (12). The annular frame (1242) is connected to the sealing component (2) through a linkage component. When the drive mechanism (126) drives the sealing component (2) to open, so that the waste in the carbonization chamber (200) falls into the combustion chamber (100) for combustion and decomposition, the linkage component drives the sealing cover (124) to descend to the expansion section (11), so that an annular gap is formed between the sealing cover (124) and the inner wall of the expansion section (11), and the particles accumulated in the particle settling chamber (400) fall into the combustion chamber (100) to achieve secondary combustion.

5. The waste thermal destruction device according to claim 4, characterized in that, The driving mechanism (126) is an electric telescopic rod or a hydraulic telescopic rod. The bottom end of the driving mechanism (126) is fixed on the upper surface of the cylindrical section (12), and the top end of the driving mechanism (126) is fixedly installed on the lower surface of the ring frame (1242). The linkage assembly includes a vertical pole (301) and a connecting rod (302). The vertical pole (301) is vertically fixed to the upper surface of the ring frame (1242) by welding or bolting. The top end of the vertical pole (301) is vertically welded to the connecting rod (302), and the other end of the connecting rod (302) is welded to the outer wall of the drive rod (22).

6. The waste thermal destruction device according to claim 2, characterized in that, An S-shaped air outlet pipe (3) is connected to the outer wall of the cylindrical section (12) at the middle position of the particle settling chamber (400). The bottom end of the air outlet pipe (3) extends into the particle settling chamber (400) and is fixed with a filter cover (31), which is a hemispherical structure. A vent hole (1234) is opened through the top of the outer wall of the partition pipe (123). The exhaust pipe (3) is provided in multiple ways, and the multiple exhaust pipes (3) are distributed in a ring at equal intervals around the outer periphery of the cylindrical section (12). The top of the multiple exhaust pipes (3) is connected to a ring manifold (32), and an exhaust pipe (33) is connected to the ring manifold (32).

7. The waste thermal destruction device according to claim 6, characterized in that, The inner diameter of the annular manifold (32) is larger than the inner diameter of the outlet pipe (3).

8. The waste thermal destruction device according to claim 2, characterized in that, The top opening of the feed pipe (121) is bolted with a sealing cap (1211). A circular hole for use with the drive rod (22) is provided at the center of the upper surface of the sealing cap (1211). A ceramic fiber sealing layer is provided at the connection between the drive rod (22) and the circular hole.

9. A waste thermal destruction device according to claim 2, characterized in that, It also includes a base (4), the furnace body (1) is fixed on the base (4) by a bracket, a burner (5) is installed on the base (4), and an air supply device (6) is installed above the burner (5).

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