A waste pyrolysis gasification furnace

Abstract

This utility model discloses a waste pyrolysis gasification furnace, including a support plate and a pyrolysis rotary furnace body. A large gear ring is fitted around the outer periphery of the pyrolysis rotary furnace body, and a drive mechanism for driving the large gear ring to rotate is connected to the support plate. A pyrolysis gas incinerator body is coaxially fitted around the outer side of the pyrolysis rotary furnace body. The pyrolysis gas incinerator body is equipped with a pyrolysis gas circulation mechanism and a substitute burner extending into the pyrolysis gas incinerator body. A first connecting cylinder and a second connecting cylinder are fixedly connected to both sides of the support plate, respectively. One end of the pyrolysis rotary furnace body is rotatably connected to the first connecting cylinder, and the other end is rotatably connected to the second connecting cylinder. A sealed feed cylinder is connected to the first connecting cylinder, and a feed cylinder body is connected to the sealed feed cylinder. A feeding mechanism is provided on the feed cylinder body. This utility model belongs to the technical field of waste pyrolysis furnaces, specifically referring to a waste pyrolysis gasification furnace.

Description

Technical Field

[0001] This utility model belongs to the technical field of waste pyrolysis furnaces, specifically referring to a waste pyrolysis gasification furnace. Background Technology

[0002] With the improvement of people's living standards, the amount of waste generated in daily life has increased significantly. Traditional waste disposal methods mainly include landfill, incineration, and composting: landfill not only occupies a large amount of land resources (approximately 1.5 acres of land are needed for every 10,000 tons of waste), but its leachate also causes continuous pollution to groundwater; incineration technology is difficult to effectively control the generation of harmful substances such as dioxins; and composting technology suffers from long processing cycles and low volume reduction efficiency. Therefore, pyrolysis gasification technology has emerged.

[0003] Pyrolysis gasification technology is a technique that processes waste at high temperatures under oxygen-deficient or oxygen-deficient conditions. The dust content in the flue gas produced by this technology is only 10% of that produced by incineration, and the subsequent purification process is simple and easy to meet emission standards, thus leading to its rapid development.

[0004] However, existing gasification furnace equipment still has the following problems in key structural design: In traditional equipment, the pyrolysis gas generated by pyrolysis is mostly directly discharged or has low utilization rate, and external energy is required to maintain the high temperature required for pyrolysis, resulting in energy waste; the feeding system in traditional equipment has poor sealing performance, which can easily lead to air mixing and affect the pyrolysis environment, and the feeding speed is difficult to control precisely, affecting the pyrolysis efficiency. Utility Model Content

[0005] In order to solve the problems of low pyrolysis gas utilization and poor sealing of the feeding system in the traditional equipment mentioned above, this utility model provides a waste pyrolysis gasification furnace.

[0006] To achieve the above functions, the technical solution adopted by this utility model is as follows: a waste pyrolysis gasification furnace, including a support plate and a pyrolysis rotary furnace body, wherein a large gear ring is sleeved on the outer periphery of the pyrolysis rotary furnace body, and a drive mechanism for driving the large gear ring to rotate is connected to the support plate.

[0007] The pyrolysis rotary furnace body is coaxially sleeved with a pyrolysis gas incinerator body. The pyrolysis gas incinerator body is equipped with a pyrolysis gas circulation mechanism and a backup burner extending into the pyrolysis gas incinerator body.

[0008] The support plate is fixedly connected to a first connecting cylinder and a second connecting cylinder on both sides. One end of the pyrolysis rotary furnace body is rotatably connected to the first connecting cylinder, and the other end is rotatably connected to the second connecting cylinder. A sealed feed cylinder is connected to the first connecting cylinder, and a feed cylinder body is connected to the sealed feed cylinder. A feeding mechanism is provided on the feed cylinder body.

[0009] As a preferred technical solution of this utility model, the bottom of the pyrolysis gas incinerator body is uniformly provided with columns, and the bottom end of the columns is fixed to the support plate.

[0010] The pyrolysis gas circulation mechanism includes a pump body one and a pump body two fixedly connected to the top of the pyrolysis gas incinerator body. The gas supply pipes of the pump body one and the pump body two pass through the top of the pyrolysis gas incinerator body. The gas extraction pipe of the pump body one passes through the top of the first connecting cylinder, and the gas extraction pipe of the pump body two passes through the top of the second connecting cylinder.

[0011] The output end of the substitute burner penetrates the side wall of the pyrolysis gas incinerator.

[0012] As a preferred embodiment of this utility model, a sealing valve is provided on the sealed feed cylinder.

[0013] As a preferred technical solution of this utility model, one end of the feeding cylinder is fixedly connected to the sealed feeding cylinder, and the top of the other end is provided with a feeding port;

[0014] The feeding mechanism includes a rotary motor fixed to the outer wall of the other end of the feeding cylinder, a rotating rod rotatably disposed inside the feeding cylinder, and a spiral fan blade fixedly sleeved on the outside of the rotating rod. The output shaft of the rotary motor passes through the feeding cylinder and is fixedly connected to the end of the rotating rod.

[0015] As a preferred embodiment of this utility model, a support column is vertically provided on the support plate;

[0016] The driving mechanism includes a drive motor fixed on a support column, a gear driven by the drive motor, auxiliary turntables sleeved at both ends of the pyrolysis rotary furnace body, U-shaped columns evenly distributed on the support plate, and a rotating wheel rotatably mounted on the U-shaped column. The gear meshes with a large gear ring, and the outer wall of the rotating wheel rolls in contact with the outer wall of the auxiliary turntable.

[0017] As a preferred technical solution of this utility model, the bottom of the second connecting cylinder is provided with a discharge port with a sealing valve;

[0018] The second connecting cylinder has support columns on both sides and the bottom of the first connecting cylinder, and the bottom end of the support column is fixed to the support plate.

[0019] As a preferred embodiment of this utility model, the pyrolysis rotary furnace body is conical, and its diameter gradually expands from the first connecting cylinder to the second connecting cylinder.

[0020] Compared with the prior art, the present invention achieves the following beneficial effects by adopting the above structure:

[0021] 1. By coordinating the pyrolysis rotary kiln body, the pyrolysis gas incinerator body, and the pyrolysis gas circulation mechanism, the internal circulation and incineration utilization of pyrolysis gas and the indirect heating of the pyrolysis rotary kiln body are integrated. The pyrolysis gas generated by the pyrolysis rotary kiln body is transported to the pyrolysis gas incinerator body for combustion through the pyrolysis gas circulation mechanism. The high temperature generated heats the pyrolysis rotary kiln body through thermal radiation, forming an energy closed loop. This not only improves the utilization rate of pyrolysis gas but also ensures a stable heat source required for pyrolysis, reducing dependence on external energy sources.

[0022] 2. Through the coordinated design of the feeding mechanism, sealed feed cylinder, and sealing valve, continuous and sealed feeding of waste materials is achieved. The spiral fan blades of the feeding mechanism, driven by a rotary motor, can stably push the material. Combined with the sealing valve on the sealed feed cylinder, it can precisely control the feeding speed to meet the feeding requirements of the pyrolysis process, and effectively prevent outside air from entering the pyrolysis rotary furnace, maintaining an oxygen-free or low-oxygen pyrolysis environment inside the furnace, and avoiding the impact of air mixing on pyrolysis efficiency and product quality. Attached Figure Description

[0023] Figure 1 This utility model provides a schematic diagram of the overall structure of a waste pyrolysis gasification furnace. Figure 1 ;

[0024] Figure 2 This utility model provides a schematic diagram of the overall structure of a waste pyrolysis gasification furnace. Figure 2 ;

[0025] Figure 3 This is a partial structural schematic diagram of a waste pyrolysis gasification furnace proposed in this utility model;

[0026] Figure 4 This is a cross-sectional view of a waste pyrolysis gasification furnace proposed in this utility model;

[0027] Figure 5 for Figure 4 Enlarged view of a portion of point A in the middle;

[0028] Figure 6 This is a schematic diagram of the feeding mechanism proposed in this utility model.

[0029] The components include: 1. Support plate; 2. Pyrolysis rotary furnace body; 3. Large gear ring; 4. Drive mechanism; 41. Support column; 42. Drive motor; 43. Gear; 44. Auxiliary turntable; 45. U-shaped column; 46. Rotary wheel; 5. Pyrolysis gas incinerator body; 6. Pyrolysis gas circulation mechanism; 61. Pump body one; 62. Pump body two; 63. Gas supply pipe; 64. Gas extraction pipe; 7. First connecting cylinder; 8. Second connecting cylinder; 9. Sealed feed cylinder; 10. Feed cylinder body; 101. Feed inlet; 11. Feeding mechanism; 111. Rotary motor; 112. Rotating rod; 113. Spiral fan blade; 12. Discharge port; 13. Support column; 14. Replacement burner; 15. Vertical column; 16. Sealing valve. Detailed Implementation

[0030] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] like Figure 1-6 As shown, the present invention provides a waste pyrolysis gasification furnace, including a support plate 1 and a pyrolysis rotary furnace body 2. A large gear ring 3 is sleeved on the outer periphery of the pyrolysis rotary furnace body 2, and a drive mechanism 4 for driving the large gear ring 3 to rotate is connected on the support plate 1.

[0032] A pyrolysis gas incinerator body 5 is coaxially sleeved on the outside of the pyrolysis rotary furnace body 2. The pyrolysis gas incinerator body 5 is equipped with a pyrolysis gas circulation mechanism 6 and a backup burner 14 extending into the pyrolysis gas incinerator body 5. Pyrolysis gas is continuously burned inside the pyrolysis gas incinerator body 5. The high temperature generated by the combustion radiates inward through the outer wall of the pyrolysis rotary furnace body 2, achieving indirect heating of the pyrolysis rotary furnace body 2. When the concentration of pyrolysis gas is insufficient, the backup burner 14 is activated, directly injecting flames into the pyrolysis gas incinerator body 5 to maintain a high-temperature environment and ensure the temperature required for pyrolysis. When waste is pyrolyzed in an oxygen-deficient environment, it releases volatiles. These gases are drawn into the pyrolysis gas incinerator body 5 for combustion, and the heat generated is again conducted to the rotary furnace body through the outer wall of the pyrolysis rotary furnace body 2, forming an energy cycle.

[0033] The support plate 1 is fixedly connected to the first connecting cylinder 7 and the second connecting cylinder 8 on both sides respectively. The pyrolysis rotary furnace body 2 is rotatably connected to the first connecting cylinder 7 at one end and to the second connecting cylinder 8 at the other end. The first connecting cylinder 7 is connected to the sealed feed cylinder 9. The sealed feed cylinder 9 is equipped with a sealing valve 16 to achieve the airtightness of the feeding process and prevent the leakage of pyrolysis gas. The sealed feed cylinder 9 is connected to the feed cylinder body 10, and the feed cylinder body 10 is equipped with a feeding mechanism 11.

[0034] like Figure 1 , 2 As shown in Figure 4, columns 15 are evenly arranged at the bottom of the pyrolysis gas incinerator body 5, and the bottom ends of the columns 15 are fixed to the support plate 1; the pyrolysis gas circulation mechanism 6 includes a pump body 1 61 and a pump body 2 62 fixedly connected to the top of the pyrolysis gas incinerator body 5, the gas supply pipes 63 of the pump body 1 61 and the pump body 2 62 penetrate through the top of the pyrolysis gas incinerator body 5, the exhaust pipe 64 of the pump body 1 61 penetrates through the top of the first connecting cylinder 7, and the exhaust pipe 64 of the pump body 2 62 penetrates through the top of the second connecting cylinder 8; the output end of the substitute burner 14 penetrates through the side wall of the pyrolysis gas incinerator body 5; The first pump body 61 and the second pump body 62 of the gas decomposition and circulation mechanism 6 respectively draw pyrolysis gas generated during the pyrolysis process of the pyrolysis rotary furnace body 2 from the first connecting cylinder 7 and the second connecting cylinder 8, and send the pyrolysis gas back to the pyrolysis gas incinerator body 5 through the gas transmission pipe 63 to form an internal circulation system. This circulation allows the pyrolysis gas to be fully mixed in the pyrolysis gas incinerator body 5, prolongs the residence time, and improves the incineration efficiency. The pyrolysis gas is ignited at high temperature in the pyrolysis gas incinerator body 5, realizing the recovery and utilization of heat energy, while converting toxic and harmful gases into harmless substances, thus achieving the purpose of environmental protection treatment.

[0035] like Figure 1-6 As shown, one end of the feeding cylinder 10 is fixedly connected to the sealed feeding cylinder 9, and the top of the other end is provided with a feeding port 101. The feeding mechanism 11 includes a rotary motor 111 fixed to the outer wall of the other end of the feeding cylinder 10, a rotating rod 112 rotatably disposed inside the feeding cylinder 10, and a spiral fan blade 113 fixedly sleeved on the outside of the rotating rod 112. The output shaft of the rotary motor 111 passes through the feeding cylinder 10 and is fixedly connected to the end of the rotating rod 112. In the feeding mechanism 11, the rotary motor 111 drives the rotating rod 112 and the spiral fan blade 113 to rotate, pushing the waste put into the feeding port 101 of the feeding cylinder 10 to the sealed feeding cylinder 9. The spiral structure can control the feeding speed. At the same time, in conjunction with the opening and closing of the sealing valve 16, a continuous and sealed feeding operation is achieved, which meets the requirements of the pyrolysis process for an oxygen-free or low-oxygen environment.

[0036] like Figure 1-4As shown, a support column 41 is vertically arranged on the support plate 1; the drive mechanism 4 includes a drive motor 42 fixed on the support column 41, a gear 43 driven by the drive motor 42, an auxiliary turntable 44 sleeved at both ends of the pyrolysis rotary furnace body 2, U-shaped columns 45 evenly arranged on the support plate 1, and a rotating wheel 46 rotatably mounted on the U-shaped column 45. The gear 43 meshes with the large gear ring 3, and the outer wall of the rotating wheel 46 rolls in contact with the outer wall of the auxiliary turntable 44, forming a multi-point support structure. This structure not only bears the weight of the furnace body and the internal materials, but also reduces the resistance of the furnace body during rotation through rolling friction, ensuring the long-term stability of the pyrolysis rotary furnace body 2. The rotation is constant; when the drive motor 42 starts, the gear 43 drives the large gear ring 3 to rotate, which in turn drives the pyrolysis rotary furnace body 2 to rotate between the first connecting cylinder 7 and the second connecting cylinder 8. The rotation of the pyrolysis rotary furnace body 2 makes the internal waste material turn over evenly and fully contact the heat source to achieve efficient pyrolysis gasification. At the same time, the pyrolysis gas incinerator body 5, which is coaxially sleeved on the outside of the pyrolysis rotary furnace body 2, forms a closed space for incinerating the gas generated by pyrolysis. The substitute burner 14 extends into the pyrolysis gas incinerator body 5 and can supplement combustion when the pyrolysis gas concentration is insufficient to maintain the high temperature environment inside the furnace and ensure the complete decomposition of harmful substances.

[0037] like Figure 1-4 As shown, the bottom of the second connecting cylinder 8 is provided with a discharge port 12 with a sealing valve 16 for discharging the residue after pyrolysis. The sealing valve 16 can control the timing of discharge to prevent air from entering the furnace body during the discharge process and affecting the pyrolysis environment. Support columns 13 are connected to both sides of the second connecting cylinder 8 and the bottom of the first connecting cylinder 7, respectively. The bottom end of the support column 13 is fixed to the support plate 1 to stabilize the structure of the first connecting cylinder 7, the second connecting cylinder 8 and the pyrolysis rotary furnace body 2, and ensure stable operation.

[0038] like Figure 1-4 As shown, the pyrolysis rotary furnace body 2 is conical, and its diameter gradually expands from the first connecting cylinder 7 to the second connecting cylinder 8. When the furnace body rotates, the conical structure uses the combined action of gravity and centrifugal force to push the waste material from the feed end on the side of the first connecting cylinder 7 to the discharge end on the side of the second connecting cylinder 8, so as to realize the orderly conveying and full pyrolysis of the material during the pyrolysis process.

[0039] In practical use

[0040] 1. Feeding stage: The crushed and pulverized waste is fed into the feed inlet 101 of the feed cylinder 10. The rotary motor 111 drives the spiral fan blade 113 to rotate clockwise, pushing the material into the sealed feed cylinder 9. The sealing valve 16 ensures that the feeding process is sealed and prevents air from entering.

[0041] 2. Pyrolysis Process: The drive motor 42 drives the large gear ring 3 to rotate via the gear 43, causing the pyrolysis rotary furnace body 2 to rotate slowly. The waste rotates and decomposes within the pyrolysis rotary furnace body 2. The pyrolysis gas incinerator body 5 continuously burns pyrolysis gas, and the high temperature radiates into the pyrolysis rotary furnace body 2 through the furnace wall, maintaining the temperature required for pyrolysis. If the pyrolysis gas is insufficient, the backup burner 14 is activated to supplement the heat. Pump body one 61 and pump body two 62 draw pyrolysis gas from the feed end and discharge end, respectively, and send it back to the pyrolysis gas incinerator body 5 for secondary combustion, improving thermal efficiency and reducing pollution.

[0042] 3. Material conveying and slag discharge: The conical furnace body design causes the waste to move towards the discharge end as it rotates. The pyrolysis residue is discharged from the sealed discharge port 12 at the bottom of the second connecting cylinder 8, and the sealing valve 16 prevents air from seeping in.

[0043] 4. Thermal energy recycling: The high temperature generated by the combustion of pyrolysis gas in the pyrolysis gas incinerator 5 continuously heats the pyrolysis rotary furnace 2, forming an energy closed loop and ensuring efficient and environmentally friendly waste treatment.

[0044] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A waste pyrolysis gasification furnace comprising a support plate (1) and a pyrolysis rotary furnace body (2), characterized in that: The pyrolysis rotary furnace body (2) is fitted with a large gear ring (3) on its outer periphery, and a drive mechanism (4) for driving the large gear ring (3) to rotate is connected to the support plate (1). The pyrolysis rotary furnace body (2) is coaxially sleeved with a pyrolysis gas incinerator body (5), and the pyrolysis gas incinerator body (5) is provided with a pyrolysis gas circulation mechanism (6) and a substitute burner (14) extending into the pyrolysis gas incinerator body (5). The support plate (1) is fixedly connected to the first connecting cylinder (7) and the second connecting cylinder (8) on both sides respectively. The pyrolysis rotary furnace body (2) is rotatably connected to the first connecting cylinder (7) at one end and to the second connecting cylinder (8) at the other end. A sealed feed cylinder (9) is connected to the first connecting cylinder (7). A feed cylinder body (10) is connected to the sealed feed cylinder (9). A feeding mechanism (11) is provided on the feed cylinder body (10).

2. The waste pyrolysis gasification furnace according to claim 1, characterized in that: The bottom of the pyrolysis gas incinerator body (5) is uniformly provided with columns (15), and the bottom end of the columns (15) is fixed on the support plate (1); The pyrolysis gas circulation mechanism (6) includes a pump body one (61) and a pump body two (62) fixedly connected to the top of the pyrolysis gas incinerator body (5). The gas supply pipes (63) of the pump body one (61) and the pump body two (62) pass through the top of the pyrolysis gas incinerator body (5). The gas extraction pipe (64) of the pump body one (61) passes through the top of the first connecting cylinder (7). The gas extraction pipe (64) of the pump body two (62) passes through the top of the second connecting cylinder (8). The output end of the substitute burner (14) penetrates the side wall of the pyrolysis gas incinerator body (5).

3. The waste pyrolysis gasification furnace according to claim 1, characterized in that: A sealing valve (16) is provided on the sealed feed cylinder (9).

4. The waste pyrolysis gasification furnace according to claim 1, characterized in that: One end of the feed cylinder (10) is fixedly connected to the sealed feed cylinder (9), and the top of the other end is provided with a feed port (101). The feeding mechanism (11) includes a rotary motor (111) fixed to the outer wall of the other end of the feeding cylinder (10), a rotating rod (112) rotatably disposed inside the feeding cylinder (10), and a spiral fan blade (113) fixedly sleeved on the outside of the rotating rod (112). The output shaft of the rotary motor (111) passes through the feeding cylinder (10) and is fixedly connected to the end of the rotating rod (112).

5. The waste pyrolysis gasification furnace according to claim 1, characterized in that: The support plate (1) is vertically provided with support columns (41). The driving mechanism (4) includes a drive motor (42) fixed on the support column (41), a gear (43) driven by the drive motor (42), an auxiliary turntable (44) sleeved on both ends of the pyrolysis rotary furnace body (2), a U-shaped column (45) evenly distributed on the support plate (1) and a rotating wheel (46) rotatably mounted on the U-shaped column (45). The gear (43) meshes with the large gear ring (3), and the outer wall of the rotating wheel (46) rolls in contact with the outer wall of the auxiliary turntable (44).

6. The waste pyrolysis gasification furnace according to claim 1, characterized in that: The bottom of the second connecting cylinder (8) is provided with a discharge port (12) with a sealing valve (16); The second connecting cylinder (8) is connected to two sides and the bottom of the first connecting cylinder (7) respectively by a support column (13), and the bottom end of the support column (13) is fixed to the support plate (1).

7. The waste pyrolysis gasification furnace according to claim 1, characterized in that: The pyrolysis rotary furnace body (2) is conical, and its diameter gradually expands from the first connecting cylinder (7) to the second connecting cylinder (8).

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