Pyrolysis incinerator

Abstract

The utility model discloses a pyrolysis incinerator which comprises a pyrolysis chamber provided with a conveying device, the input end of the conveying device is located below a feeding port, and the output end of the conveying device extends to the output end of the pyrolysis chamber; an inner cavity of the multi-stage combustion chamber is divided into a falling combustion chamber, a movable combustion chamber and a gas combustion chamber, the top of the falling combustion chamber is communicated with the output end of the pyrolysis chamber, the bottom of the falling combustion chamber is communicated with the gas combustion chamber through the movable combustion chamber, an inclined plane is arranged in the movable combustion chamber, and the top end of the inclined plane is located below the falling combustion chamber; the bottom end of the inclined surface obliquely extends downwards to the slag discharging opening; and the air distribution mechanism is communicated with the multi-stage combustion chamber. According to the utility model, pyrolyzed products can be combusted more sufficiently, residues are less, the requirement on subsequent treatment of the residues is reduced, harmful gases can be reduced, the garbage treatment efficiency can be effectively improved, the structure is compact, and the operation is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of combustion equipment, in particular to a pyrolysis incinerator. Background Art

[0002] With the growth of global population and the acceleration of urbanization, the amount of domestic waste generated is also growing rapidly, and waste disposal has become an increasingly serious environmental problem. At present, the main methods of waste disposal include landfill and incineration. However, landfill will occupy a lot of land resources and may cause environmental problems such as groundwater pollution and land pollution.

[0003] Although traditional waste incineration methods can effectively reduce the volume of waste, they produce a large amount of harmful gases during the combustion process, such as carbon dioxide, dioxins and sulfides. These gases have a huge impact on the environment and pose a potential threat to human health. In addition, the energy efficiency of traditional incineration technology is relatively low, and the residues produced during the treatment process often require further treatment. These factors limit the application scope and efficiency of traditional waste incineration technology. Utility Model Content

[0004] The utility model aims to provide a pyrolysis incinerator to solve the technical problems of insufficient pyrolysis incineration of garbage, low combustion efficiency and more harmful gases produced.

[0005] The above-mentioned purpose of the utility model can be achieved by adopting the following technical solutions:

[0006] The utility model provides a pyrolysis incinerator, comprising: a pyrolysis chamber, an input end of which is provided with a feed port, a conveying device is provided in the pyrolysis chamber, the input end of the conveying device is located below the feed port, and the output end of the conveying device extends to the output end of the pyrolysis chamber; a multi-stage combustion chamber, an inner cavity of which is divided into a falling combustion chamber, a moving combustion chamber and a gas combustion chamber, the top of the falling combustion chamber is connected with the output end of the pyrolysis chamber, the bottom of the falling combustion chamber is connected with the gas combustion chamber through the moving combustion chamber, a slag discharge port is provided at the bottom of the moving combustion chamber, and an inclined surface is provided in the moving combustion chamber, the top of the inclined surface is located below the falling combustion chamber, and the bottom end of the inclined surface is inclined downward and extends to the slag discharge port; an air distribution mechanism, which is connected with the multi-stage combustion chamber, and the air distribution mechanism is used to transport the combustion-supporting gas into the multi-stage combustion chamber.

[0007] In an embodiment of the utility model, the inner cavity of the multi-stage combustion chamber is divided into the falling combustion chamber, the moving combustion chamber and the gas combustion chamber by a combustion chamber partition, the top end of the combustion chamber partition is connected to the inner top surface of the multi-stage combustion chamber, the bottom end of the combustion chamber partition extends downward and has a distance between the top end of the inclined surface in the height direction, and the inclined surface is located on the inner bottom surface of the multi-stage combustion chamber.

[0008] In the implementation manner of the utility model, an adjustment baffle is provided at the bottom end of the combustion chamber partition, and the adjustment baffle can move up and down to adjust the distance.

[0009] In an implementation manner of the utility model, the top end of the slope is arranged close to the falling combustion chamber, and the bottom end of the slope is arranged close to the gas combustion chamber; the downward inclination angle of the slope relative to the horizontal plane is 15 degrees to 25 degrees.

[0010] In an embodiment of the utility model, the air distribution mechanism is a multi-stage air distribution mechanism, and the multi-stage air distribution mechanism includes a primary air distribution structure and a secondary air distribution structure. The primary air distribution structure is connected to the top of the falling combustion chamber, and the secondary air distribution structure is connected to the bottom of the falling combustion chamber.

[0011] In the embodiment of the present invention, the height distance between the inner top surface of the falling combustion chamber and the top of the inclined surface is h0, and the height distance between the first-level air distribution structure and the top of the inclined surface is h1, which has the relationship: 0.6

[0012] In the embodiment of the present invention, the height distance between the inner top surface of the falling combustion chamber and the top of the inclined surface is h0, and the height distance between the secondary air distribution structure and the top of the inclined surface is h2, which has the relationship: 0.2 <h2 / h0<0.4。

[0013] In an implementation manner of the utility model, the multi-stage air distribution mechanism further includes a three-stage air distribution structure, and the three-stage air distribution structure is connected to the gas combustion chamber.

[0014] In the embodiment of the present invention, the height distance between the inner top surface of the gas combustion chamber and the top of the inclined surface is h0, and the height distance between the three-stage air distribution structure and the top of the inclined surface is h3, which has the relationship: 0.4 <h3 / h0<0.6。

[0015] ​In an embodiment of the utility model, the pyrolysis incinerator also includes an exhaust gas cooling pipe and an exhaust gas heat exchange pipe. The exhaust gas heat exchange pipe is arranged on the wall of the pyrolysis chamber. The exhaust gas heat exchange pipe is connected to the top of the gas combustion chamber through the exhaust gas cooling pipe. The exhaust gas generated in the gas combustion chamber can be cooled to a preset temperature through the exhaust gas cooling pipe and transported to the exhaust gas heat exchange pipe.

[0016] The characteristics and advantages of this utility model are:

[0017] The pyrolysis incinerator of the utility model forms a multi-stage combustion chamber by dividing an inner cavity into a falling combustion chamber, a moving combustion chamber and a gas combustion chamber which are connected in sequence, and the top of the falling combustion chamber is connected with the output end of the pyrolysis chamber, and the output end of the conveying device in the pyrolysis chamber is extended to the output end of the pyrolysis chamber, so that the solid fuel particles produced by pyrolysis in the pyrolysis chamber can fall into the falling combustion chamber from the output end of the conveying device, and then fall and burn in the moving combustion chamber to form a falling bed and produce a gas-solid mixture, and the combustible gas in the gas-solid mixture can directly enter the gas combustion chamber through the moving combustion chamber for combustion treatment, and the uncompletely burned solid in the gas-solid mixture can move and burn along the inclined surface in the moving combustion chamber to form a moving bed, and the combustible gas produced by the combustion can also enter the gas combustion chamber for combustion treatment, and the waste slag is directly discharged from the slag discharge port. Therefore, the utility model sets up a multi-stage combustion chamber, so that the products after pyrolysis can be burned more completely, and less residue is generated, which reduces the need for subsequent treatment of the residue and can reduce the generation of harmful gases, making it more environmentally friendly. The utility model integrates the pyrolysis chamber and the multi-stage combustion chamber into one, which can effectively improve the garbage treatment efficiency, and has a compact structure and simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic structural diagram of a pyrolysis incinerator in one embodiment of the utility model.

[0020] Figure 2 It is a schematic structural diagram of a pyrolysis incinerator in another embodiment of the utility model.

[0021] In the figure:

[0022] 1. Pyrolysis chamber; 11. Feed inlet; 12. Conveying device;

[0023] 2. Multi-stage combustion chamber; 21. Falling combustion chamber; 22. Moving combustion chamber; 221. Inclined surface; 23. Gas combustion chamber; 24. Combustion chamber partition; 25. Slag discharge port;

[0024] 3. Air distribution mechanism; 31. First-level air distribution structure; 32. Second-level air distribution structure; 33. Third-level air distribution structure;

[0025] 41. Exhaust gas cooling pipeline; 42. Exhaust gas heat exchange pipeline. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figure 1 and Figure 2 As shown, the utility model provides a pyrolysis incinerator, comprising: a pyrolysis chamber 1, wherein an input end of the pyrolysis chamber 1 is provided with a feed port 11, a conveying device 12 is provided in the pyrolysis chamber 1, the input end of the conveying device 12 is located below the feed port 11, and the output end of the conveying device 12 extends to the output end of the pyrolysis chamber 1; a multi-stage combustion chamber 2, wherein an inner cavity of the multi-stage combustion chamber 2 is divided into a falling combustion chamber 21, a moving combustion chamber 22 and a gas combustion chamber 23, the top of the falling combustion chamber 21 is connected with the output end of the pyrolysis chamber 1, the bottom of the falling combustion chamber 21 is connected with the gas combustion chamber 23 through the moving combustion chamber 22, a slag discharge port 25 is provided at the bottom of the moving combustion chamber 22, and a slope 221 is provided in the moving combustion chamber 22, the top of the slope 221 is located below the falling combustion chamber 21, and the bottom of the slope 221 is inclined downward and extends to the slag discharge port 25; an air distribution mechanism 3 is connected with the multi-stage combustion chamber 2, and the air distribution mechanism 3 is used to transport the combustion-supporting gas to the multi-stage combustion chamber 2.

[0028] The pyrolysis incinerator of the present utility model forms a multi-stage combustion chamber 2 by partitioning an inner cavity into a sequentially connected falling combustion chamber 21, a moving combustion chamber 22, and a gas combustion chamber 23. The top of the falling combustion chamber 21 is connected to the output end of the pyrolysis chamber 1. By extending the output end of the conveying device 12 in the pyrolysis chamber 1 to the output end of the pyrolysis chamber 1, the solid fuel particles pyrolyzed in the pyrolysis chamber 1 can fall from the output end of the conveying device 12 into the falling combustion chamber 21, and then fall and burn into the moving combustion chamber 22 to form a falling bed and generate a gas-solid mixture. The combustible gas (such as gases like carbon monoxide (CO)) in the gas-solid mixture can directly enter the gas combustion chamber 23 for combustion treatment, while the unburned solids in the gas-solid mixture can move and burn along the inclined surface 221 in the moving combustion chamber 22 to form a moving bed. Similarly, the combustible gas generated by combustion can enter the gas combustion chamber 23 for combustion treatment, and the waste residue is directly discharged from the slag discharge port 25. Therefore, by setting the multi-stage combustion chamber 2 in the present utility model, the products after pyrolysis can be burned more fully, with less residue generated, reducing the need for subsequent treatment of the residue, and can reduce the generation of harmful gases, being more environmentally friendly. Moreover, the present utility model integrates the pyrolysis chamber 1 and the multi-stage combustion chamber 2, which can effectively improve the treatment efficiency of garbage, and has a compact structure and simple operation.

[0029] Specifically, the pyrolysis chamber 1 is generally a horizontally arranged rectangular furnace body structure. The two ends of the pyrolysis chamber 1 opposite to each other in the horizontal direction are its input end and output end. The feed inlet 11 is located at the top of the pyrolysis chamber 1 and is arranged close to the end face of the output end of the pyrolysis chamber 1. The output end of the pyrolysis chamber 1 is connected to the multi-stage combustion chamber 2. The conveying device 12 is also generally horizontally arranged in the pyrolysis chamber 1. The conveying device 12 can be a conveyor belt device or a screw conveyor device. The length of the conveying device 12 is equal to or slightly less than the length of the pyrolysis chamber 1. The speed v1 of the conveying device 12 and the length s1 of the conveying device 12 preferably satisfy the relationship: 3 < s1 / v1 < 6. The multi-stage combustion chamber 2 is generally a vertically arranged rectangular furnace body structure. The multi-stage combustion chamber 2 has a left side wall and a right side wall opposite to each other in the horizontal direction, and the upper part of the left side wall is connected to the output end of the pyrolysis chamber 1. The combustion-supporting gas is air or oxygen-enriched gas.

[0030] Such as Figure 1 And Figure 2As shown, in the embodiment of the utility model, the inner cavity of the multi-stage combustion chamber 2 is divided into a falling combustion chamber 21, a moving combustion chamber 22 and a gas combustion chamber 23 by a combustion chamber partition 24. The top end of the combustion chamber partition 24 is connected to the inner top surface of the multi-stage combustion chamber 2, and the bottom end of the combustion chamber partition 24 extends downward and has a distance with the top end of the inclined surface 221 in the height direction. The inclined surface 221 is located on the inner bottom surface of the multi-stage combustion chamber 2, so that the inner cavity of the multi-stage combustion chamber 2 is generally a U-shaped chamber structure, that is, the falling combustion chamber 21, the moving combustion chamber 22 and the gas combustion chamber 23. It is generally arranged in a U shape, with the falling combustion chamber 21 and the gas combustion chamber 23 on both sides of the combustion chamber partition 24, and the mobile combustion chamber 22 below the combustion chamber partition 24, so that the combustible gas generated during the falling combustion process and the combustible gas generated during the mobile combustion process can enter the gas combustion chamber 23 more quickly for combustion treatment, which is more efficient and has a compact structure, which is conducive to the circulation of the combustion-supporting gas in the multi-stage combustion chamber 2, ensuring that the materials in the falling combustion chamber 21, the mobile combustion chamber 22 and the gas combustion chamber 23 can all be more fully in contact with the combustion-supporting gas to burn more fully.

[0031] Specifically, the combustion chamber partition 24 is generally a vertically arranged plate structure. The bottom end of the combustion chamber partition 24 and the inner bottom surface of the multi-stage combustion chamber 2 have a gap space in the vertical direction. The top end of the inclined surface 221 is arranged close to the falling combustion chamber 21, and the bottom end of the inclined surface 221 is arranged close to the gas combustion chamber 23, so that when the incomplete combustion moves along the inclined surface 221, the combustible gas generated by the combustion can flow directly upward into the gas combustion chamber 23. The entire inner bottom surface of the multi-stage combustion chamber 2 forms the inclined surface 221, that is, the top end of the inclined surface 221 is connected to the bottom end of the left side wall, and the horizontal gap space between the bottom end of the inclined surface 221 and the bottom end of the right side wall constitutes the slag discharge port 25. In one embodiment of the utility model, the width of the slag discharge port 25 is 0.2m.

[0032] like Figure 1 and Figure 2 As shown, in some embodiments of the utility model, the angle of the slope 221 downwardly inclined relative to the horizontal plane is 15 to 25 degrees. If the inclination angle of the slope 221 is too large, the moving speed will be too fast and the moving combustion will be insufficient. If the inclination angle of the slope 221 is too small, the moving speed will be too slow and the solid product will accumulate on the slope 221, resulting in insufficient contact with the combustion-supporting gas, leading to insufficient moving combustion.

[0033] In the embodiment of the utility model, an adjustment baffle is provided at the bottom end of the combustion chamber partition 24, and the adjustment baffle can be moved up and down to adjust the spacing l, so that the spacing l can be adjusted according to the combustion feed speed (that is, the speed at which the conveying device 12 conveys the solid fuel particles generated by pyrolysis to the falling combustion chamber 21) and the combustion conditions. Specifically, the adjustment baffle can be slidably arranged on a side surface of the combustion chamber partition 24 in the vertical direction through a telescopic drive member. When the combustion feed speed is faster, the adjustment baffle is moved upward accordingly, and the spacing l is increased, so that the combustible gas generated in the falling combustion chamber 21 has a larger circulation space to flow into the gas combustion chamber 23 after entering the mobile combustion chamber 22, and the solid generated in the falling combustion chamber 21 can move faster after falling to the mobile combustion chamber 22 without being piled up too high. On the contrary, when the combustion feed speed is slower, the adjustment baffle is moved downward, and the spacing l is reduced, so as to avoid the solid generated in the falling combustion chamber 21 from moving too fast after falling to the mobile combustion chamber 22 and incomplete combustion.

[0034] like Figure 1 and Figure 2 As shown, in order to better control the solid fuel particles generated by pyrolysis to fully burn in the multi-stage combustion chamber 2, in the embodiment of the utility model, the air distribution mechanism 3 is a multi-stage air distribution mechanism 3, and the multi-stage air distribution mechanism 3 includes a primary air distribution structure 31 and a secondary air distribution structure 32, the primary air distribution structure 31 is connected to the top of the falling combustion chamber 21, and the secondary air distribution structure is connected to the bottom of the falling combustion chamber 21. The combustion-supporting gas is transported to the top of the falling combustion chamber 21 through the primary air distribution structure 31, and the combustion-supporting gas is transported to the bottom of the falling combustion chamber 21 through the secondary air distribution structure 32, so that the solid combustion particles generated by pyrolysis can fully contact the combustion-supporting gas during the falling process to make them burn more fully, and a part of the combustion-supporting gas provided by the secondary air distribution structure 32 can enter the mobile combustion chamber 22, and a part of the combustion-supporting gas can pass through the mobile combustion chamber 22 into the gas combustion chamber 23, so as to facilitate the full combustion of the incompletely burned solid in the mobile combustion chamber 22, and the full combustion of the combustible gas in the gas combustion chamber 23.

[0035] Specifically, the first-level air distribution structure 31 and the second-level air distribution structure 32 both include an air distribution duct, the input end of the air distribution duct is connected to the air supply device, and the output end of the air distribution duct passes through the right side wall of the multi-stage combustion chamber 2 and passes through the gas combustion chamber 23 to be connected to the combustion chamber partition 24. The combustion chamber partition 24 is provided with an upper air distribution port corresponding to the air distribution duct of the first-level air distribution structure 31 and a lower air distribution port corresponding to the air distribution duct of the second-level air distribution structure 32. The height of the air outlet position of the first-level air distribution structure 31 is set flush with the height of the output end of the conveying device 12, or the air outlet position of the first-level air distribution structure 31 is slightly higher than the output end of the conveying device 12. The height of the air outlet position of the second-level air distribution structure 32 is set flush with the bottom end of the combustion chamber partition 24, or the air outlet position of the second-level air distribution structure 32 is slightly higher than the bottom end of the combustion chamber partition 24.

[0036] like Figure 2 As shown, in the embodiment of the present invention, the height distance between the inner top surface of the falling combustion chamber 21 and the top of the inclined surface 221 is h0, and the minimum distance between the first-level air distribution structure 31 and the inner bottom surface of the moving combustion chamber 22 is h1, which has the relationship: 0.6

[0037] like Figure 2 As shown, in the embodiment of the utility model, the multi-stage air distribution mechanism also includes a three-stage air distribution structure 33, and the three-stage air distribution structure 33 is connected to the gas combustion chamber 23. By setting the three-stage air distribution structure 33, the combustion-supporting gas is transported to the gas combustion chamber 23, further ensuring that the combustible gas is fully burned in the gas combustion chamber 23. Specifically, the three-stage air distribution structure 33 also includes an air distribution duct, the input end of the air distribution duct of the three-stage air distribution structure 33 is connected to the air supply device, and the output end of the air distribution duct of the three-stage air distribution structure 33 is connected to the right side wall of the multi-stage combustion chamber 2, and the right side wall of the multi-stage combustion chamber 2 is provided with a side air distribution port corresponding to the air distribution duct of the three-stage air distribution structure 33.

[0038] like Figure 2 As shown, in the embodiment of the utility model, the inner top surface of the gas combustion chamber 23 is flush with the inner top surface of the falling combustion chamber 21, so the height distance between the inner top surface of the gas combustion chamber 23 and the top of the inclined surface 221 is also h0, and the height distance between the three-level air distribution structure 33 and the top of the inclined surface 221 is h3, which has the relationship: 0.4 <h3 / h0<0.6。

[0039] like Figure 2 ​As shown, in a specific embodiment of the utility model, the height distance h0 is 3.0m, the height distance h1 is 2.4m, the height distance h2 is 0.75m, the height distance h3 is 0.2m, the length of the combustion chamber partition 24 is 2.2m, and the adjustment range of the spacing l is 0.3m to 0.8m. The width of the falling combustion chamber 21 is equal to the width of the gas combustion chamber 23, both of which are 1.0m. The inclination angle of the inclined surface 221 is 20 degrees. The inner diameters of the air distribution ducts of the first-level air distribution structure 31, the air distribution ducts of the second-level air distribution structure 32, and the air distribution ducts of the third-level air distribution structure 33 are all 0.2m. The length s1 of the conveying device 12 is 3.0m, and the speed v1 is preferably 0.6m / s. The time it takes for the solid fuel particles produced by pyrolysis to fall from the output end of the conveying device 12 to the mobile combustion chamber 22 (that is, the time it takes for the solid fuel particles to fall and burn) is about 0.8 seconds, and the combustible gas flows from the falling combustion chamber 21 through the mobile combustion chamber 22 into the gas combustion chamber 23 and is finally discharged from the gas combustion chamber 23. The time required is about 4.5 seconds.

[0040] In order to improve the energy utilization rate, in the embodiment of the utility model, the pyrolysis incinerator also includes a tail gas cooling pipeline 41 and a tail gas heat exchange pipeline 42. The tail gas heat exchange pipeline 42 is arranged on the wall of the pyrolysis chamber 1. The tail gas heat exchange pipeline 42 is connected to the top of the gas combustion chamber 23 through the tail gas cooling pipeline 41. The tail gas generated in the gas combustion chamber 23 can be cooled to a preset temperature through the tail gas cooling pipeline 41 and transported to the tail gas heat exchange pipeline 42. The tail gas discharged from the gas combustion chamber 23 is recovered through the tail gas cooling pipeline 41 and cooled to a preset temperature before being transported to the tail gas heat exchange pipeline 42, so that the tail gas in the tail gas heat exchange pipeline 42 is used to increase the heat for the pyrolysis chamber 1. Specifically, the preset temperature is 200°C to 400°C. The tail gas heat exchange pipeline 42 can be generally a spirally arranged pipeline structure. The tail gas heat exchange pipeline 42 can be laid on the outer wall surface and / or inner wall surface of the wall of the pyrolysis chamber 1, and can also be embedded in the wall of the pyrolysis chamber 1. The output end of the tail gas heat exchange pipe 42 is the same as the gas purification device or the outside, so that the tail gas enters the gas purification device or is directly discharged into the atmosphere after heat exchange.

[0041] The pyrolysis incinerator of the utility model is used for pyrolysis incineration, which includes the following steps:

[0042] Pyrolysis: feeding the biomass raw material from the feed port 11 to the input end of the conveyor 12 in the pyrolysis chamber 1, and controlling the speed of the conveyor 12 so that the biomass raw material is pyrolyzed into solid fuel particles in the pyrolysis chamber 1 during the process of being transported from the input end to the output end by the conveyor 12;

[0043] Falling combustion: The output end of the conveying device 12 delivers the solid fuel particles into the falling combustion chamber 21, controls the height of the falling combustion chamber 21 and controls the flow rate of the combustion-supporting gas delivered by the air distribution mechanism 3, so that the solid fuel particles are burned into a gas-solid mixture during the process of falling from the falling combustion chamber 21 to the moving combustion chamber 22; wherein the gas-solid mixture includes combustible gas and incompletely burned solids;

[0044] Mobile combustion: Control the moving speed of the gas-solid mixture and the flow rate of the combustion-supporting gas delivered by the air distribution mechanism 3, so that the gas-solid mixture moves along the inclined surface 221 in the mobile combustion chamber 22 to the slag discharge port 25, and the unburned solid in the gas-solid mixture burns into waste slag and generates combustible gas, and the waste slag is discharged from the slag discharge port 25;

[0045] Gas combustion: The combustible gas generated by the falling combustion of solid fuel particles and the combustible gas generated by the moving combustion of the gas-solid mixture both enter the gas combustion chamber 23 and are burned into exhaust gas.

[0046] Among them, by controlling the speed of the conveying device 12, it is ensured that the biomass raw materials are pyrolyzed into solid combustion particles in the pyrolysis chamber 1 and then enter the multi-stage combustion chamber 2. By controlling the falling height and the flow rate of the combustion-supporting gas delivered by the air supply structure, the products produced by the pyrolysis can be burned more fully during the falling combustion process. By controlling the moving speed and the flow rate of the combustion-supporting gas delivered by the air supply structure, the products that are not completely burned after the falling combustion can be burned more fully during the moving combustion process, so that less residue is produced in the end, further reducing the demand for subsequent treatment of the residue.

[0047] In an embodiment of the present invention, the moving combustion step further includes: adjusting the distance between the bottom end of the combustion baffle and the inclined surface 221 between the falling combustion chamber 21 and the gas combustion chamber 23 to adjust the moving speed of the gas-solid mixture in the moving combustion chamber 22.

[0048] In an embodiment of the utility model, the air distribution mechanism 3 is a multi-stage air distribution mechanism 3, and the multi-stage air distribution mechanism 3 includes a primary air distribution structure 31, a secondary air distribution structure 32 and a tertiary air distribution structure 33. The primary air distribution structure 31 is connected to the top of the falling combustion chamber 21, the secondary air distribution structure is connected to the bottom of the falling combustion chamber 21, and the tertiary air distribution structure 33 is connected to the gas combustion chamber 23; the pyrolysis incineration method also includes the following steps: according to the stacking height of the gas-solid mixture in the mobile combustion chamber 22, the flow rate ratio of the secondary air distribution structure 32 and the tertiary air distribution structure 33 for transporting the combustion-supporting gas is adjusted respectively; according to the concentration of the combustible gas in the exhaust gas, the flow rate ratio of the tertiary air distribution structure 33 and the primary air distribution structure 31 for transporting the combustion-supporting gas is adjusted respectively.

[0049] In a specific embodiment of the utility model, the ratio of the initial flow rates of the first-level air distribution structure 31, the second-level air distribution structure 32 and the third-level air distribution structure 33 is 5:3:2; when the height of the solid product accumulated in the mobile combustion chamber 22 is 0.1m higher than the bottom end of the combustion chamber baffle, the flow rate ratio of the second-level air distribution structure 32 is increased, and the flow rate ratio of the third-level air distribution structure 33 is reduced; when the concentration of combustible gas (including incompletely burned combustible gas) in the exhaust gas discharged from the gas combustion chamber 23 is greater than 5%, the flow rate ratio of the third-level air distribution structure 33 is increased, and the flow rate ratio of the first-level air distribution structure 31 is reduced, wherein the ratio of increase and decrease of the flow rate ratio can be selected as a fixed value, or it can be calculated according to a feedback algorithm, and the specific method is to establish a multi-input-multi-output system of flow-incinerator indicators, and use intelligent control algorithms such as PID to adjust the input flow rate so that the indicators of the incinerator are maintained at the specified values.

[0050] The above are only several embodiments of the present invention. Those skilled in the art can make various changes or modifications to the embodiments of the present invention based on the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims

1. A pyrolysis incinerator, characterized in that: include: A pyrolysis chamber, wherein the input end of the pyrolysis chamber is provided with a feed port, a conveying device is provided in the pyrolysis chamber, the input end of the conveying device is located below the feed port, and the output end of the conveying device extends to the output end of the pyrolysis chamber; A multi-stage combustion chamber, wherein the inner cavity is divided into a falling combustion chamber, a moving combustion chamber and a gas combustion chamber, wherein the top of the falling combustion chamber is connected to the output end of the pyrolysis chamber, and the bottom of the falling combustion chamber is connected to the gas combustion chamber through the moving combustion chamber, a slag discharge port is provided at the bottom of the moving combustion chamber, and an inclined surface is provided in the moving combustion chamber, wherein the top end of the inclined surface is located below the falling combustion chamber, and the bottom end of the inclined surface is inclined downward and extends to the slag discharge port; An air distribution mechanism is communicated with the multi-stage combustion chamber, and the air distribution mechanism is used to transport the combustion-supporting gas into the multi-stage combustion chamber.

2. The pyrolysis incinerator according to claim 1, characterized in that: The inner cavity of the multi-stage combustion chamber is divided into the falling combustion chamber, the moving combustion chamber and the gas combustion chamber by a combustion chamber partition. The top end of the combustion chamber partition is connected to the inner top surface of the multi-stage combustion chamber. The bottom end of the combustion chamber partition extends downward and has a distance between it and the top end of the inclined surface in the height direction. The inclined surface is located on the inner bottom surface of the multi-stage combustion chamber.

3. The pyrolysis incinerator according to claim 2, characterized in that: An adjusting baffle is provided at the bottom end of the combustion chamber baffle, and the adjusting baffle can move up and down to adjust the distance.

4. The pyrolysis incinerator according to claim 1, characterized in that: The top end of the slope is arranged close to the falling combustion chamber, and the bottom end of the slope is arranged close to the gas combustion chamber; the angle of the slope downwardly inclined relative to the horizontal plane is 15 degrees to 25 degrees.

5. The pyrolysis incinerator according to claim 1, characterized in that: The air distribution mechanism is a multi-stage air distribution mechanism, which includes a primary air distribution structure and a secondary air distribution structure. The primary air distribution structure is connected to the top of the falling combustion chamber, and the air distribution structure is connected to the bottom of the falling combustion chamber.

6. The pyrolysis incinerator according to claim 5, characterized in that: The height distance between the inner top surface of the falling combustion chamber and the top of the inclined surface is h0, and the height distance between the first-level air distribution structure and the top of the inclined surface is h1, which has the relationship: 0.6 <h1 / h0<0.8。 7. The pyrolysis incinerator according to claim 5, characterized in that: The height distance between the inner top surface of the falling combustion chamber and the top of the inclined surface is h0, and the height distance between the secondary air distribution structure and the top of the inclined surface is h2, which has the relationship: 0.2 <h2 / h0<0.4。 8. The pyrolysis incinerator according to claim 5, characterized in that: The multi-stage air distribution mechanism also includes a three-stage air distribution structure, and the three-stage air distribution structure is connected to the gas combustion chamber.

9. The pyrolysis incinerator according to claim 8, characterized in that: The height distance between the inner top surface of the gas combustion chamber and the top of the slope is h0, and the height distance between the three-level air distribution structure and the top of the slope is h3, which has the relationship: 0.4 <h3 / h0<0.6。 10. The pyrolysis incinerator according to claim 1, characterized in that: The pyrolysis incinerator also includes an exhaust gas cooling pipe and an exhaust gas heat exchange pipe. The exhaust gas heat exchange pipe is arranged on the wall of the pyrolysis chamber. The exhaust gas heat exchange pipe is connected to the top of the gas combustion chamber through the exhaust gas cooling pipe. The exhaust gas generated in the gas combustion chamber can be cooled to a preset temperature through the exhaust gas cooling pipe and transported to the exhaust gas heat exchange pipe.

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