Pyrolysis apparatus for organic solid waste

Abstract

This application relates to the technical field of organic solid waste pyrolysis equipment, and discloses a pyrolysis device for organic solid waste, including a pyrolysis furnace and an oxygen degassing assembly located at its inlet. The oxygen degassing assembly includes a coaxially arranged rotary drum assembly and a pressure regulating cylinder, which cooperate to form a closed hopper. The rotary drum assembly includes a rotating drum driven by a motor, and the rotating drum is equipped with multiple baffles. This pyrolysis device for organic solid waste, by setting a rotary drum-type oxygen degassing assembly at the inlet of the pyrolysis furnace, actively replaces the air carried in the pores of the material by utilizing the alternating action of positive and negative pressure chambers in the rotating tank, and combined with a multi-layer anti-jamming and adaptive sealing structure, achieves deep deoxygenation and stable air isolation during the continuous feeding process of organic solid waste.

Description

Technical Field

[0001] This application relates to the technical field of organic solid waste pyrolysis equipment, and more particularly to a pyrolysis equipment for organic solid waste. Background Technology

[0002] Thermal pyrolysis technology, as a highly efficient thermochemical conversion method, can break down large organic polymer molecules into smaller molecule pyrolysis gas, pyrolysis oil, and solid residues in an oxygen-deficient or anaerobic environment, achieving energy recovery from waste. However, the thermal pyrolysis process requires extremely high purity of the reaction atmosphere, typically requiring the oxygen content in the system to be controlled at an extremely low level (e.g., below 0.5%). If excessive oxygen is introduced into the pyrolysis furnace, it will not only trigger uncontrollable exothermic oxidation reactions, leading to serious safety accidents such as localized overheating or even explosions, but will also cause secondary oxidation of the pyrolysis products, significantly reducing the quality and yield of pyrolysis oil and combustible gases, and increasing the load on subsequent tail gas treatment.

[0003] In existing technologies, continuous feeding and air isolation are typically achieved through the use of a double-gate airlock. Its working principle involves the alternating opening and closing of two valves, using a buffer hopper in between to create an "airlock" that attempts to prevent external air from entering the high-temperature pyrolysis furnace. While this structure can prevent backflow of macroscopic airflow to some extent, the following problems still exist in practical applications:

[0004] Organic solid waste is typically complex in composition and varies in physical form. Many materials (such as crushed plastic sheets and loose biomass pellets) have rough surfaces and often contain numerous micropores, cracks, or cavities. During the feeding process, these pores and cracks naturally fill and retain a large amount of ambient air. When the material enters the negative-pressure pyrolysis furnace through the double gates, although the external air is blocked by the gates, this "hidden" oxygen carried by the material itself will be carried into the high-temperature reaction zone along with the material. In addition, due to the gaps between particles when the waste is piled up, air is also trapped inside the material flow. This oxygen is released at high temperatures, directly destroying the oxygen-deficient environment required for pyrolysis.

[0005] Secondly, to reduce the air carried by the waste, the waste is usually stored in a negative pressure silo after sorting and drying. During the feeding process from the silo to the pyrolysis furnace, the waste is in a negative pressure sealed environment. However, the negative pressure environment cannot completely remove the air carried by the waste itself. Moreover, the sealing reliability of the feeding system decreases as the process lengthens. The entire feeding path from the negative pressure silo to the pyrolysis furnace inlet is long, involving multiple connection sealing points and conveying components. During long-distance transportation, due to mechanical vibration, thermal expansion and contraction, or wear of seals, tiny leakage points are easily generated in the conveying pipes or connections. Under the influence of micro-negative pressure, external air is easily drawn into the system through these leakage points, which will further increase the amount of oxygen carried by the waste and affect the oxygen-deficient environment inside the pyrolysis furnace. Summary of the Invention

[0006] This application proposes a pyrolysis device for organic solid waste. A rotary drum oxygen desorption assembly is installed at the feed inlet of the pyrolysis furnace. The alternating action of positive and negative pressure chambers in the rotating tank actively replaces the air carried in the pores of the material. Combined with multiple anti-jamming and adaptive sealing structures, deep deoxygenation and stable air isolation are achieved during the continuous feeding process of organic solid waste.

[0007] To achieve the above objectives, this application adopts the following technical solution: a pyrolysis device for organic solid waste, comprising a pyrolysis furnace and an oxygen desorption assembly disposed at its inlet, wherein the oxygen desorption assembly comprises a coaxially arranged rotary drum assembly and a pressure regulating cylinder, which together form a closed silo;

[0008] The drum assembly includes a rotating drum driven by a motor, and the rotating drum is provided with multiple partitions, with a rotating groove formed between adjacent partitions;

[0009] The pressure adjusting cylinder is provided with a feed inlet and a discharge outlet. The area between the feed inlet and the discharge outlet along the rotation direction of the cylinder is the adjustment zone, and the area opposite is the transition zone. The adjustment zone is provided with several air holes, which are respectively connected to the positive pressure connecting pipe and the negative pressure connecting pipe, so that the rotating groove alternately forms a positive pressure chamber and a negative pressure chamber during rotation. The positive pressure connecting pipe is connected to a protective gas source, and the negative pressure connecting pipe is connected to a negative pressure pump. The arc length of the transition zone is greater than the arc length of a single rotating groove.

[0010] Furthermore, the rotating drum is provided with seven baffles, and two baffles are combined in pairs to form seven sets of rotating grooves. The arc length of the adjustment area corresponds to the sum of the arc lengths of the four rotating grooves. There are always three rotating grooves in a closed positive and negative pressure state, realizing the positive and negative pressure conversion of an appropriate number of times, while the volume of each rotating groove is moderate.

[0011] Furthermore, the end of the partition has a sealing head, which is elastic and has the ability to scrape off adhering materials. When faced with materials that cannot be scraped off, the sealing head can also make way to avoid jamming.

[0012] Furthermore, the inner wall of the support cylinder corresponding to the transition zone is provided with a reduced diameter liner to increase the sealing pressure between the partition and the reduced diameter liner and improve the sealing performance. The reduced diameter liner is provided with a guide slope on the side opposite to the rotation direction of the rotating cylinder.

[0013] Furthermore, both ends of the rotating drum are provided with end caps, and each end cap is provided with a volume adjustment window corresponding to the position of each rotating slot. The volume adjustment window is provided with a rubber plate, which is elastic. The support cylinder is provided with a volume reduction pressure plate corresponding to the transition zone and has a hollowed-out position corresponding to the adjustment zone. By limiting the volume, the amount of material loaded in the rotating slot is limited. By expanding the volume, the material pressure is reduced, and idle space is generated at the top to prevent material from getting stuck at the end of the partition.

[0014] Furthermore, the edge of the feed inlet coincides with the centerline of the pressure adjusting cylinder, and the feed inlet is located on the side of the centerline opposite to the rotation direction of the rotating cylinder. The support cylinder is provided with an expansion section on the side of the feed inlet opposite to the rotation direction of the rotating cylinder. The sum of the arc of the expansion section and the feed inlet is the same as the arc of the rotating groove. The expansion section makes the distance between the support cylinder and the partition plate 0.8-1.2 times the upper limit of the material diameter, creating a compression space and preventing the material from getting stuck.

[0015] Furthermore, a baffle is provided at the end of the partition to prevent a small amount of material that crosses the partition from sliding to the end of the partition.

[0016] Furthermore, the inner wall of the support cylinder is provided with an anti-jamming rotating cylinder corresponding to the starting position of the adjustment area. The anti-jamming rotating cylinder is elastic and can rotate. When the partition just crosses the center line, the material is not easy to fall naturally. The elastic yielding and rotation of the anti-jamming rotating cylinder avoids material jamming.

[0017] Furthermore, the front side of the anti-jamming rotating cylinder is provided with a release groove, which is arc-shaped. The release groove allows the squeezed material to release its elasticity. When the elasticity is released, the force between the material and the release groove causes the material on the partition to detach.

[0018] Furthermore, the rotating drum assembly and the pressure adjusting cylinder form an oxygen removal unit. The oxygen removal unit has two sets, which are connected in series, one above the other. The two sets of oxygen removal units are connected through a feeding cylinder. The pressure adjusting cylinder corresponding to the upper oxygen removal unit has air holes that are sequentially connected to positive pressure, negative pressure, and positive pressure along the rotation direction of the rotating drum. The pressure adjusting cylinder corresponding to the lower oxygen removal unit has air holes that are sequentially connected to negative pressure, positive pressure, and negative pressure along the rotation direction of the rotating drum. The feeding cylinder is connected to positive pressure, which increases the number of positive and negative pressure alternations and enhances the ability to remove oxygen carried by the material.

[0019] The beneficial effects of this invention are as follows:

[0020] This application provides a pyrolysis device for organic solid waste. By incorporating an oxygen removal component, a closed hopper is formed using a rotating drum assembly and a pressure regulating cylinder. Positive and negative pressure chambers are alternately constructed within the rotating tank. When the material passes through the negative pressure chamber, the negative pressure extracts air from the pores and cracks of the material. When the material passes through the positive pressure chamber, a protective gas (inert gas or pyrolysis gas) is injected into the pores and mixes with and dilutes the residual air. Through the repeated alternation of positive and negative pressure, not only is active replacement and deep removal of oxygen from the material achieved, but pressure fluctuations also hinder gas crossflow between the rotating tanks. This fundamentally solves the problem of oxygen-carrying material disrupting the oxygen-deficient environment of pyrolysis, significantly reducing the oxygen load entering the pyrolysis furnace and ensuring the safety of the pyrolysis reaction and the quality of the products.

[0021] Even if a large amount of air is mixed in during the material feeding process (including the failure of the negative pressure silo), the air can be extracted under the repeated alternation of positive and negative pressure, reducing the amount of air carried in the material, further improving the system's continuous operation capability and improving product quality.

[0022] To address the problem of high surface friction and irregular shape of organic solid waste, which easily leads to jamming of rotating parts during continuous feeding, causing equipment failure, seal failure, and ultimately oxygen leakage, this invention designs a multi-layered anti-jamming and adaptive sealing structure. First, through the cooperation of the volume adjustment window and rubber plate, the volume of the rotating trough is compressed during the feeding stage to limit the amount of material carried, while the volume is expanded during the oxygen degassing stage to reduce frictional resistance and create idle space, allowing the material to tumble under its own weight and preventing it from getting stuck in the gaps between the baffles. Second, an expanded diameter section is provided at the feed inlet to provide buffer compression space, along with an anti-jamming rotating cylinder and a release groove, allowing material stuck at the baffle ends to be elastically avoided and forcibly peeled off. Third, the baffle ends use elastic sealing heads that can both scrape off adhering materials and retract to avoid hard objects. These designs effectively solve the problem of jamming of high-friction, irregular materials in continuous closed conveying, ensuring the long-term stable operation of the oxygen degassing component, avoiding the risk of downtime for maintenance or oxygen leakage due to seal damage caused by mechanical jamming, and further improving the system's continuous operation capability and safety reliability. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0024] Figure 1 This is a schematic diagram of the oxygen removal component in this invention;

[0025] Figure 2 This is a schematic diagram of the structure of the present invention;

[0026] Figure 3 This is a schematic diagram of the rotating drum assembly in this invention;

[0027] Figure 4 This is a three-dimensional schematic diagram of the oxygen removal component in this invention;

[0028] Figure 5 This is a side view of the oxygen removal component in this invention;

[0029] Figure 6 For the present invention Figure 5 Enlarged view of B in the middle;

[0030] Figure 7 For the present invention Figure 5 A magnified view of A in the middle.

[0031] In the diagram: 100, pyrolysis furnace; 200, oxygen degassing assembly; 210, hopper; 220, drum assembly; 221, rotating drum; 222, rotating groove; 223, sealing ring; 224, volume adjustment window; 225, rubber plate; 226, partition plate; 230, pressure adjusting cylinder; 231, feed inlet; 232, discharge outlet; 233, adjustment zone; 234, transition zone; 235, diameter reduction liner; 236, anti-jamming rotating drum; 237, release groove; 238, support cylinder; 239, diameter expansion section; 240, positive pressure connecting pipe; 250, negative pressure connecting pipe; 260, discharge cylinder; 270, volume reduction pressure plate. Detailed Implementation

[0032] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1, please refer to Figures 1-7 A pyrolysis device for organic solid waste includes a pyrolysis furnace 100 and an oxygen degassing assembly 200. The oxygen degassing assembly 200 is located at the feed inlet of the pyrolysis furnace 100. In this embodiment, the pyrolysis furnace 100 is a vertical pyrolysis furnace, and the oxygen degassing assembly 200 replaces the traditional double gate and is directly connected to the feed inlet of the pyrolysis furnace 100. In other embodiments, if the pyrolysis furnace 100 is a horizontal pyrolysis furnace, the oxygen degassing assembly 200 is located at the feed inlet of the screw conveyor.

[0034] The oxygen degassing assembly 200 includes a coaxially arranged drum assembly 220, a pressure adjusting cylinder 230, a positive pressure connecting pipe 240, and a negative pressure connecting pipe 250. The pressure adjusting cylinder 230 and the drum assembly 220 cooperate to form a closed hopper. The drum assembly 220 includes a drum 221, on which a motor is mounted. The motor rotates the drum 221. The motor housing is fixedly connected to the pressure adjusting cylinder 230 or a support frame. The drum 221 has 6-8 baffles 226. In this embodiment, there are seven baffles 226. Two baffles 226 are combined in pairs to form seven sets of rotating grooves 222. Both ends of the drum assembly 221 are provided with end caps, and the end caps are provided with sealing rings 223. The rotating drum 221 forms a dynamic seal with the pressure adjusting cylinder 230 through the sealing rings 223. The pressure adjusting cylinder 230 includes a feed inlet 231, and the upper and lower sides of the pressure adjusting cylinder 230 are respectively provided with a feed inlet 231 and a discharge outlet 232. Along the rotation direction of the rotating drum assembly 220, an adjustment zone 233 is formed between the feed inlet 231 and the discharge outlet 232. Against the rotation direction of the rotating drum assembly 220, a transition zone 234 is formed between the discharge outlet 232 and the feed inlet 231. The arc length of the adjustment zone 233 corresponds to four rotations. The sum of the arc lengths of the grooves 222 ensures that three rotating grooves 222 are always in a closed positive and negative pressure state. These three rotating grooves 222 are equipped with vents at corresponding positions, which are connected to either a positive pressure connecting pipe 240 or a negative pressure connecting pipe 250. The rotating groove 222 connected to the positive pressure connecting pipe 240 is a positive pressure chamber, and the rotating groove 222 connected to the negative pressure connecting pipe 250 is a negative pressure chamber. The positive and negative pressure chambers alternate. The negative pressure connecting pipe 250 is connected to a negative pressure pump, and the positive pressure connecting pipe 240 is connected to a protective gas. An inert gas is preferred as the protective gas; however, in some special cases, the gaseous products after pyrolysis can also be used. A booster pump is connected to the positive pressure connection pipe 240 to ensure that the pressure in the positive pressure chamber is sufficiently high, slightly higher than the pressure inside the pyrolysis furnace 100. When the material is in the negative pressure chamber, the negative pressure acts on the air in the pores or cracks, causing some of it to flow out and reducing the pressure. When the material is in the positive pressure chamber, the gas flows into the pores or cracks, mixes with the air inside, and reduces the air concentration inside. The negative and positive pressure chambers work alternately to replace the air in the gaps or cracks, reducing the oxygen content of the material. At the same time, the alternating positive and negative pressures hinder the flow of gas in each rotating groove 222, achieving the ability to isolate air. The arc length of the transition zone 234 is greater than the arc length of the rotating groove 222. There is always a baffle 226 in the area where the transition zone 234 is located. The baffle 226 slides against the inner wall of the support cylinder 238 to ensure that the transition zone 234 is in a closed state, preventing air from flowing into the discharge port 232 through the transition zone 234 and then into the pyrolysis furnace 100.

[0035] The end of the partition 226 has a sealing head, which is elastic. When material adheres to the inner wall of the support cylinder 238, the partition 226 has appropriate elasticity to scrape off the adhered material. For materials that cannot be scraped off, the partition 226 contracts under pressure to avoid jamming. At the same time, in order to ensure that the transition zone 234 does not leak, the inner wall of the support cylinder 238 corresponding to the transition zone 234 is provided with a diameter reduction liner 235. The diameter reduction liner 235 reduces the inner diameter of the corresponding position of the transition zone 234, increasing the sealing pressure between the partition 226 and the diameter reduction liner 235. The diameter reduction liner 235 is provided with a guide slope on the side opposite to the rotation direction of the rotating cylinder 221.

[0036] Because many organic wastes have high surface friction, and when the material enters through the feed inlet 231, it will fill the rotating trough 222. When the drum 221 rotates, the friction between the material and the support cylinder 238 will cause the material to be squeezed into the end of the partition 226, increasing the rotational resistance of the drum 221 and even causing it to jam. Therefore, the end of the drum 221 is provided with a volume adjustment window 224 corresponding to the position of each rotating trough 222. The volume adjustment window 224 is provided with a rubber plate 225, which is elastic. The support cylinder 238 is provided with a volume reduction pressure plate 270 corresponding to the position of the transition zone 234, corresponding to the adjustment zone 236. Position 33 is hollowed out. When the material enters through the feed port 231, the rubber plate 225 is constrained by the shrinking pressure plate 270, reducing the volume of the rotating groove 222. After the feeding is completed, the rotating groove 222 enters the area corresponding to the sealing ring 223, the rubber plate 225 is unconstrained, the volume of the rotating groove 222 increases, the pressure of the material in the rotating groove 222 is released, the pressure on the inner wall of the support cylinder 238 is reduced, the friction between the material and the support cylinder 238 is reduced, and the material is affected by gravity. The side of the partition 226 corresponding to the rotation direction will be left empty, and the material will hardly be affected by friction, and will be stuck into the end of the partition 226.

[0037] The edge of the feed inlet 231 coincides with the centerline of the pressure adjusting cylinder 230. The feed inlet 231 is located on the side of the centerline opposite to the rotation direction of the rotating cylinder 221, corresponding to the end of the transition zone 234. After the material is filled, the curvature of the feed inlet 231 is smaller than the curvature of the rotating groove 222. The support cylinder 238 is provided with an expansion section 239 on the side of the feed inlet 231 opposite to the rotation direction of the rotating cylinder 221. The sum of the curvatures of the expansion section 239 and the feed inlet 231 is the same as the curvature of the rotating groove 222. The expansion section 239 makes the distance between the support cylinder 238 and the partition plate 226 sufficiently large, slightly larger than the material diameter, which is 0.8-1.2 times the upper limit of the material diameter. The material diameter is determined by the grinding process. The machine determines that, to ensure a certain value, when the material fills the space below the feed inlet 231, as the drum 221 rotates, a small amount of material will be stuck at the end of the partition 226 due to friction. However, due to the large gap and sufficient compression space, the material will not get stuck. The end of the partition 226 is equipped with a baffle, which is close to the inner wall of the transition zone 234 and is located on the side along the rotation direction. A small amount of material that falls over the partition 226 is blocked by the baffle, preventing the material from sliding down to the end of the partition 226 under the action of gravity. When the partition 226 crosses the center line, under the influence of gravity, the material will not get stuck on the front side of the partition 226 (the front side corresponds to the side of the rotation direction of the drum 221).

[0038] When the feed inlet 231 is full of material below, the material will pile up at the end of the partition 226. When it just crosses the center line, the effect of gravity is not obvious, and the material may still get stuck. Therefore, the top of the support cylinder 238 is provided with an anti-jamming rotating cylinder 236 on the side that crosses the center line (corresponding to the starting position of the adjustment area 233). The front side of the anti-jamming rotating cylinder 236 is provided with a release groove 237. The anti-jamming rotating cylinder 236 is elastic and can rotate. When the partition 226 crosses the center line, even if there is a small amount of material left, it will not be stuck by the anti-jamming rotating cylinder 236. After the partition 226 carries the material across the anti-jamming rotating cylinder 236, it enters the space where the release groove 237 is located. The material is blocked by the release groove 237 and falls off.

[0039] In Embodiment 2, the drum assembly 220 and the pressure adjusting cylinder 230 form an oxygen venting unit. In Embodiment 1, one oxygen venting unit can achieve three pressure conversions, but the amount of oxygen vented is limited. Therefore, in Embodiment 2, two sets of oxygen venting units are provided, connected in series vertically. The two sets of oxygen venting units are connected through the feed cylinder 260. The pressure adjusting cylinder 230 corresponding to the upper oxygen venting unit has air holes sequentially connected to positive pressure, negative pressure, and positive pressure along the rotation direction of the drum 221. The pressure adjusting cylinder 230 corresponding to the lower oxygen venting unit... The pressure regulating cylinder 230, along the rotation direction of the rotating cylinder 221, has air holes that are sequentially connected to negative pressure, positive pressure, and negative pressure. The feeding cylinder 260 is connected to positive pressure. The upper oxygen degassing unit is connected to the negative pressure of the feeding structure. The lower oxygen degassing unit recovers protective gas before the material enters the pyrolysis furnace 100 to prevent a large amount of protective gas from entering the pyrolysis furnace 100. By repeatedly alternating positive and negative pressure on the material, the air carried by the material is reduced. The upper oxygen degassing unit is equipped with a hopper 210, into which the material conveyed by the robot or chain plate is fed.

[0040] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pyrolysis device for organic solid waste, comprising a pyrolysis furnace (100) and an oxygen depletion assembly (200) disposed at its inlet, characterized in that: The oxygen degassing assembly (200) includes a coaxially arranged drum assembly (220) and a pressure regulating cylinder (230), which together form a closed hopper; The drum assembly (220) includes a rotating drum (221) driven by a motor, and the rotating drum (221) is provided with a plurality of partitions (226), and a rotating groove (222) is formed between adjacent partitions (226). The pressure adjusting cylinder (230) includes a support cylinder (238). The upper and lower sides of the support cylinder (238) are respectively provided with an inlet (231) and a outlet (232). Along the rotation direction of the rotating cylinder (221), the area between the inlet (231) and the outlet (232) is the adjusting zone (233), and vice versa, it is the transition zone (234). The sidewall of the adjusting zone (233) is provided with several air holes, which are respectively connected to a positive pressure connecting pipe (240) and a negative pressure connecting pipe (250), allowing the rotation... The groove (222) alternately forms a positive pressure chamber and a negative pressure chamber during rotation; the positive pressure connecting pipe (240) is connected to a protective gas source, and the negative pressure connecting pipe (250) is connected to a negative pressure pump; the arc length of the transition zone (234) is greater than the arc length of a single rotating groove (222); the rotating cylinder (221) is provided with seven partitions (226); two partitions (226) are combined in pairs to form seven sets of rotating grooves (222); the arc length of the adjustment zone (233) corresponds to the sum of the arc lengths of the four rotating grooves (222).

2. The pyrolysis equipment for organic solid waste according to claim 1, characterized in that, The end of the partition (226) has a sealing head, which is elastic.

3. The pyrolysis equipment for organic solid waste according to claim 2, characterized in that, The inner wall of the support cylinder (238) corresponding to the transition zone (234) is provided with a reduced diameter liner (235), and the reduced diameter liner (235) is provided with a guide slope on the side opposite to the rotation direction of the rotating cylinder (221).

4. The pyrolysis equipment for organic solid waste according to claim 1, characterized in that, Both ends of the rotating cylinder (221) are provided with end caps. Each end cap is provided with a capacity adjustment window (224) corresponding to the position of each rotating groove (222). A rubber plate (225) is provided on the capacity adjustment window (224). The rubber plate (225) is elastic. A capacity reduction pressure plate (270) is provided at the end of the support cylinder (238) corresponding to the position of the transition zone (234). The end of the support cylinder (238) is hollowed out at the position of the adjustment zone (233).

5. The pyrolysis equipment for organic solid waste according to claim 1, characterized in that, The edge of the feed inlet (231) coincides with the centerline of the pressure adjusting cylinder (230). The feed inlet (231) is located on the side of the centerline opposite to the rotation direction of the rotating cylinder (221). The support cylinder (238) is provided with an expansion section (239) on the side of the feed inlet (231) opposite to the rotation direction of the rotating cylinder (221). The sum of the arc of the expansion section (239) and the feed inlet (231) is the same as the arc of the rotating groove (222). The expansion section (239) makes the distance between the support cylinder (238) and the partition plate (226) 0.8-1.2 times the upper limit of the material diameter.

6. The pyrolysis equipment for organic solid waste according to claim 5, characterized in that, The end of the partition (226) is provided with a baffle on one side along the rotation direction of the rotating cylinder (221).

7. The pyrolysis equipment for organic solid waste according to claim 1, characterized in that, The inner wall of the support cylinder (238) is provided with an anti-jamming cylinder (236) corresponding to the starting position of the adjustment area (233). The anti-jamming cylinder (236) is elastic and can rotate.

8. A pyrolysis device for organic solid waste according to claim 7, characterized in that, The front side of the anti-jamming rotating cylinder (236) is provided with a release groove (237), which is arc-shaped.

9. A pyrolysis device for organic solid waste according to claim 1, characterized in that, The rotating drum assembly (220) and the pressure adjusting cylinder (230) form an oxygen venting unit. The oxygen venting unit is provided in two sets, which are connected in series. The two sets of oxygen venting units are connected through the feeding cylinder (260). The pressure adjusting cylinder (230) corresponding to the upper oxygen venting unit has air holes that are connected to positive pressure, negative pressure, and positive pressure in sequence along the rotation direction of the rotating drum (221). The pressure adjusting cylinder (230) corresponding to the lower oxygen venting unit has air holes that are connected to negative pressure, positive pressure, and negative pressure in sequence along the rotation direction of the rotating drum (221). The feeding cylinder (260) is connected to positive pressure.

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