Coal gangue incineration device and system

Abstract

This utility model relates to a coal gangue incineration device and system. The coal gangue incineration device includes an outer cylinder, an inner cylinder, and a support beam. The outer cylinder has a slag discharge port and a flue gas discharge port. The inner cylinder is located inside the outer cylinder and rotatably connected to it, forming a flow chamber between the inner and outer cylinders. The inner cylinder has a combustion chamber. The inner cylinder has an inlet and an outlet at its two ends in a predetermined direction. The combustion chamber communicates with the flow chamber through the outlet, which is located away from the flue gas discharge port in the predetermined direction. The support beam passes through the outer and inner cylinders. This utility model's coal gangue incineration device utilizes the high-temperature flue gas generated from the combustion of coal gangue particles to preheat the coal gangue particles and the combustion chamber, maintaining the combustion chamber at a high temperature and ensuring stable combustion of the coal gangue particles without the need for co-firing other fuels. Simultaneously, it reduces the lower limit of the calorific value of combustible coal gangue to 600 kcal / kg, increasing the utilization rate of coal gangue resources.

Description

Technical Field

[0001] This utility model relates to the field of solid waste incineration technology, specifically to a coal gangue incineration device and system. Background Technology

[0002] Coal gangue is a large-scale solid waste generated during coal mining. Currently, the amount of low- and medium-calorific-value coal gangue has reached tens of billions of tons, mainly stored in stockpiles. This not only occupies a large amount of land resources and pollutes the environment, but also poses a safety risk of spontaneous combustion. Coal gangue has a highly variable calorific value and very low volatile matter content, making it a difficult-to-ignite and combustible solid waste. Circulating fluidized bed (CFB) boilers can only directly incinerate coal gangue with a calorific value greater than 1500 kcal / kg. Furthermore, CFB boilers that burn 100% coal gangue experience boiler wear and unstable combustion in actual use, thus requiring the blending of high-calorific-value coal. Every year, a large amount of coal gangue with a calorific value of 600-1500 kcal / kg is continuously produced. Based on the requirements of zero-waste cities, new combustion technologies and solutions are urgently needed to utilize this low-calorific-value coal gangue in a resource-efficient manner. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, embodiments of this utility model propose a coal gangue incineration device that uses the high-temperature flue gas generated by the combustion of coal gangue particles to preheat the coal gangue particles and the combustion chamber, keeping the combustion chamber at a high temperature to ensure stable combustion of the coal gangue particles without the need to add other fuels. At the same time, it lowers the lower limit of the calorific value of combustible coal gangue, enabling coal gangue with a calorific value higher than 600 kcal / kg to be directly combusted and the residual heat to be recovered and utilized.

[0005] The present invention provides a coal gangue incineration system.

[0006] The present invention provides a method for burning coal gangue.

[0007] According to an embodiment of the present invention, a coal gangue incineration device includes an outer cylinder, an inner cylinder, and a support beam. The outer cylinder is provided with a slag discharge port and a flue gas discharge port. The inner cylinder is disposed inside the outer cylinder and rotatably connected to the outer cylinder. A flow cavity is formed between the inner cylinder and the outer cylinder. The inner cylinder has a combustion chamber. The two ends of the inner cylinder in a predetermined direction are respectively provided with a feed port and a discharge port. The combustion chamber is connected to the flow cavity through the discharge port. The discharge port is located away from the flue gas discharge port in the predetermined direction. The support beam passes through the outer cylinder and the inner cylinder. A ventilation channel is provided inside the support beam. The ventilation channel is connected to the combustion chamber to introduce air into the combustion chamber.

[0008] The coal gangue incineration device of this utility model utilizes the high-temperature flue gas generated by the combustion of coal gangue particles to preheat the coal gangue particles and the combustion chamber, so that the combustion chamber is kept at a high temperature, ensuring stable combustion of coal gangue particles without the need to add other fuels. At the same time, it lowers the lower limit of the calorific value of combustible coal gangue, so that coal gangue with a calorific value higher than 600 kcal / kg can be directly burned and the residual heat can be recovered and utilized in the future.

[0009] In some embodiments, the inner cylinder includes a cylinder body and a feed pipe, the cylinder body defining the combustion chamber, one end of the feed pipe forming the feed inlet, the other end of the feed pipe being connected to the cylinder body, the feed pipe being rotatably disposed in the outer cylinder, and a portion of the feed pipe being located inside the outer cylinder.

[0010] In some embodiments, the support beam is fixedly connected to the cylinder, one end of the support beam passes through the feed pipe, and the support beam is provided with a feed spiral section, which is opposite to the feed port.

[0011] In some embodiments, the other end of the support beam is located outside the outer cylinder and is used to connect to an air source, and the other end of the support beam is located on the side of the outer cylinder away from the exhaust port in the preset direction.

[0012] In some embodiments, the support beam passes through the discharge port, the support beam is fixedly connected to the inner cylinder, and the support beam is provided with a discharge spiral section, which is opposite to the discharge port.

[0013] In some embodiments, the support beam is provided with a plurality of air outlets, which are connected to the ventilation channel.

[0014] In some embodiments, in the preset direction, a plurality of the air outlets are located in the middle of the combustion chamber and on one side adjacent to the discharge port;

[0015] And / or, the coal gangue incineration device further includes an air guide pipe, which is disposed on the support beam and communicates with the air outlet.

[0016] In some embodiments, the coal gangue incineration device further includes a support rod that connects the support beam and the inner cylinder;

[0017] And / or, the coal gangue incineration device further includes a plurality of collision balls located in the combustion chamber;

[0018] And / or, there is an angle between the preset direction and the horizontal direction, the discharge port is located at the lower end of the inner cylinder, and the slag discharge port is located at the lower end of the outer cylinder.

[0019] And / or, further includes a material guiding structure disposed on the inner wall surface of the inner cylinder.

[0020] The coal gangue incineration system of this utility model includes a crushing device and a coal gangue incineration device, wherein the feed inlet is connected to the discharge outlet of the crushing device.

[0021] The coal gangue incineration system of this utility model embodiment can incinerate coal gangue with a calorific value of 600 kcal / kg or higher, ensuring stable combustion of coal gangue without mixing it with other fuels. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the coal gangue incineration device according to an embodiment of the present utility model;

[0023] Figure 2 This is a structural schematic diagram of the inner cylinder, support beam, and support rod of an embodiment of this utility model.

[0024] Figure label:

[0025] 100. Coal gangue incineration device;

[0026] 10. Flow chamber; 20. Combustion chamber;

[0027] 1. Outer cylinder; 11. Slag discharge port; 12. Smoke discharge port;

[0028] 2. Inner cylinder; 21. Inlet; 22. Outlet; 23. Cylinder body; 24. Inlet pipe;

[0029] 3. Support beam; 31. Feeding screw section; 32. Discharge screw section; 33. Air outlet;

[0030] 4. Support rod. Detailed Implementation

[0031] The embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] The following is a reference to the appendix. Figures 1 to 2 This document describes in detail the coal gangue incineration device 100 and system according to embodiments of the present invention.

[0033] The coal gangue incineration system of this utility model includes a crushing device and a coal gangue incineration device 100.

[0034] The coal gangue incineration device 100 of this utility model embodiment includes an outer cylinder 1, an inner cylinder 2, and a support beam 3. The outer cylinder 1 is provided with a slag discharge port 11 and a flue gas discharge port 12. The inner cylinder 2 is disposed inside the outer cylinder 1 and rotatably connected to it, forming a flow cavity 10 between the inner cylinder 2 and the outer cylinder 1. The inner cylinder 2 has a combustion chamber 20. At both ends of the inner cylinder 2 in a predetermined direction, there are respectively a feed inlet 21 and a discharge outlet 22. The combustion chamber 20 communicates with the flow cavity 10 through the discharge outlet 22, and the discharge outlet 22 is located away from the flue gas discharge port 12 in this predetermined direction. The support beam 3 passes through the outer cylinder 1 and the inner cylinder 2. The support beam 3 has a ventilation channel inside it, which communicates with the combustion chamber 20 to allow air to enter the combustion chamber 20.

[0035] The discharge port of the crushing device is connected to the feed port 21.

[0036] In this embodiment of the utility model, the coal gangue incineration system crushes coal gangue with a calorific value of 600 kcal / kg or higher to a particle size of 10 mm or less, and then feeds the crushed coal gangue into the coal gangue incineration device 100 for combustion. Crushing the coal gangue to a particle size of less than 10 mm increases its specific surface area and improves its combustion characteristic index.

[0037] The crushed coal gangue particles enter the combustion chamber 20 of the coal gangue incineration device 100 of this embodiment of the invention through the feed inlet 21. Air enters the combustion chamber 20 through the ventilation channel of the support beam 3. At the same time, the inner cylinder 2 rotates, thereby causing the coal gangue particles to continuously tumble and roll. This not only moves the coal gangue particles towards the discharge port 22, but also increases the contact area between the coal gangue particles and the inner cylinder 2. The coal gangue particles burn in the combustion chamber 20, and the high-temperature flue gas generated by combustion enters the flow chamber 10 from the discharge port 22, and then exits from the exhaust port 12. During the process of the high-temperature flue gas flowing from the discharge port 22 to the exhaust port 12, the high-temperature flue gas flows through the outer wall of the inner cylinder 2. Due to the heat conduction of the inner cylinder 2, the high-temperature flue gas exchanges heat with the inner cylinder 2, heating the inner cylinder 2 and the combustion chamber 20, thereby preheating the coal gangue particles through the heated inner cylinder 2. The soot produced by the combustion of coal gangue particles is discharged from the discharge port 22, and the soot falls naturally into the outer cylinder 1, and then is discharged from the slag discharge port 11.

[0038] like Figure 1 As shown, in Figure 1In the illustrated embodiment, the feed inlet 21 is located on the left side of the inner cylinder 2, the discharge outlet 22 is located on the right side of the inner cylinder 2, and the flue gas outlet 12 is located on the left side of the inner cylinder 2. The flow path of high-temperature flue gas from the discharge outlet 22 to the flue gas outlet 12 is from right to left. Coal gangue particles enter the inner cylinder 2 from the left side, and the high-temperature flue gas and soot generated by the combustion of coal gangue particles are discharged from the right side of the inner cylinder 2. For the combustion of coal gangue particles, combustion does not begin in the initial stage of entering the inner cylinder 2 (that is, at the left end of the inner cylinder 2), and combustion is completed when they are discharged from the inner cylinder 2 (at the right end of the inner cylinder 2). Therefore, the temperature at the left end of the inner cylinder 2 is relatively lower than that at the right end. The high-temperature flue gas discharged from the combustion flows from right to left, covering most of the inner cylinder 2 along its length (extension direction), especially the left side of the inner cylinder 2. Thus, the high-temperature flue gas can heat the inner cylinder 2, especially the left side, raising the temperature of the left wall of the inner cylinder 1 to 700°C, thereby heating the combustion chamber 20. This preheats the coal gangue particles that have not yet started burning after entering the inner cylinder 2, promoting the combustion of the coal gangue, which then ignites upon contact with air.

[0039] The coal gangue incineration device 100 of this utility model embodiment has an outer cylinder 1 sleeved around an inner cylinder 2 to form a flow cavity 10. The exhaust port 12 and the discharge port 22 are respectively placed at both ends of the inner cylinder 2. The high-temperature flue gas generated by the combustion of coal gangue particles flows through the outer wall of the inner cylinder 2 after being discharged from the discharge port 22 and flowing towards the exhaust port 12, thereby heating the inner cylinder 2 and then heating the combustion chamber 20. This preheats the coal gangue particles, raises their temperature, promotes their combustion, and keeps the combustion chamber 20 at a high temperature, thus achieving self-stabilized combustion of the coal gangue particles.

[0040] Therefore, the coal gangue incineration device 100 of this utility model uses the high-temperature flue gas generated by the combustion of coal gangue particles to preheat the coal gangue particles and the combustion chamber 20, so that the combustion chamber 20 is kept at a high temperature, ensuring stable combustion of coal gangue particles without the need to add other fuels. At the same time, it lowers the lower limit of the calorific value of combustible coal gangue, so that coal gangue with a calorific value higher than 600 kcal / kg can also be directly burned to recover its heat.

[0041] Specifically, an insulation layer is provided on the inner wall of the outer cylinder 1, or a liquid cooling pipe is laid on the inner wall of the outer cylinder 1 to recover some of the heat from the high-temperature flue gas using the liquid inside the liquid cooling pipe. A heat insulation layer is laid on the outer wall of the outer cylinder 1.

[0042] In some embodiments, the inner cylinder 2 includes a cylinder body 23 and a feed pipe 24. The cylinder body 23 defines a combustion chamber 20. One end of the feed pipe 24 forms a feed inlet 21, and the other end of the feed pipe 24 is connected to the cylinder body 23, communicating with the combustion chamber 20. Coal gangue particles enter the combustion chamber 20 through the feed pipe 24. The feed pipe 24 is rotatably mounted on the outer cylinder 1, meaning the inner cylinder 2 is rotatably connected to the outer cylinder 1 via the feed pipe 24.

[0043] A portion of the feed pipe 24 is located inside the outer cylinder 1. This portion of the feed pipe 24 is within the area covered by the flow chamber 10, allowing high-temperature flue gas to flow through this portion of the feed pipe 24. The high-temperature flue gas can heat the feed pipe 24, thereby preheating the coal gangue particles passing through the feed pipe 24, increasing the temperature of the coal gangue particles entering the combustion chamber 20, further increasing the temperature of the coal gangue particles, further promoting the combustion of the coal gangue particles, and further ensuring the self-stabilizing combustion of the coal gangue particles.

[0044] Specifically, a first sealed bearing (not shown in the figure) is provided between the feed pipe 24 and the outer cylinder 1.

[0045] Furthermore, since the support beam 3 is fixedly connected to the cylinder 23, the support beam 3 rotates synchronously with the inner cylinder 2. One end (left end) of the support beam 3 passes through the feed pipe 24, and the support beam 3 is equipped with a feed screw section 31, which is opposite to the feed inlet 21. As the support beam 3 rotates with the inner cylinder 2, the feed screw section 31 transports the coal gangue particles into the cylinder 23, completing the feeding of the coal gangue particles.

[0046] Specifically, the coal gangue incineration device 100 further includes a support rod 4, which connects the support beam 3 and the inner cylinder 23. Both the support rod 4 and the support beam 3 are made of high-temperature resistant materials.

[0047] The other end (right end) of the support beam 3 is located outside the outer cylinder 1 and is used to connect to the air source. This other end of the support beam 3 is located on the side of the outer cylinder 1 away from the flue gas outlet 12 in a predetermined direction, that is, the other end of the support beam 3 is located on the right side of the outer cylinder 1. Air enters the support beam 3 from the right side and then enters the combustion chamber 20 through the support beam 3. The air flow path is from right to left, flowing through the right side of the flow cavity 10. The high-temperature flue gas on the right side of the flow cavity 10 exchanges heat with the support beam 3, heating the air before it enters the combustion chamber 20, thereby increasing the air temperature, which in turn increases the temperature of the air used for the combustion of coal gangue particles, further promoting the combustion of coal gangue particles and further ensuring the self-stabilizing combustion of coal gangue particles.

[0048] Specifically, a second sealed bearing (not shown in the figure) is provided at the right end of the support beam 3. The second sealed bearing is installed on the outer cylinder 1, and the support beam 3 is rotatably connected to the outer cylinder 1. The right end of the support beam 3 is connected to a Roots blower or high-pressure air, thereby blowing air into the inner cylinder 2 through the ventilation channel.

[0049] Furthermore, the support beam 3 is provided with multiple air outlets 33, which are connected to the ventilation channel. The multiple air outlets 33 enable the support beam 3 to form multiple air intake points within the combustion chamber 20, which is conducive to the uniform distribution of air in the combustion area of ​​coal gangue particles and helps to ensure the stability of coal gangue particle combustion.

[0050] In some embodiments, in this preset direction, multiple air outlets 33 are located in the middle of the combustion chamber 20 and on one side adjacent to the discharge port 22, that is, multiple air outlets 33 are distributed in the middle and right side of the combustion chamber 20. The middle and right side of the combustion chamber 20 are oxygen-rich, and the coal gangue particles burn in the middle and right side of the combustion chamber 20 to form a combustion zone. Thus, there is a certain space on the left side of the combustion chamber 20 for preheating the coal gangue particles, ensuring that the temperature of the coal gangue particles rises to above 600°C before combustion, thereby ensuring the self-stabilized combustion of the coal gangue particles after they enter the combustion zone and encounter air.

[0051] In some embodiments, the coal gangue incineration device 100 further includes an air guide pipe (not shown in the figure), which is disposed on the support beam 3 and communicates with the air outlet 33. The air guide pipe has a certain length, one end of which is connected to the air outlet 33, and the other end of which can extend into the bottom layer of the combustion zone, thereby sending air into the material layer adjacent to the inner wall of the cylinder 23 to supply oxygen for the combustion of the coal gangue particles located deep within, ensuring the complete combustion of the coal gangue particles.

[0052] Specifically, such as Figure 1 As shown, the distance between the leftmost air outlet 33 and the feed pipe 24 is 2-5m. The end of the air guide pipe is 5-20cm away from the inner wall of the inner cylinder 2, where the thickness of the coal gangue particle material layer in the inner cylinder 2 is greater than 10cm, and the outlet air velocity of the air outlet 33 or the air guide pipe is 10-50m / s.

[0053] In some embodiments, the support beam 3 passes through the discharge port 22. The air entering the combustion chamber 20 through the right side of the support beam 3 passes through the discharge port 22. On the one hand, the high temperature gas pressure at the discharge port 22 is relatively high, which can quickly and efficiently heat the support beam 3 and the air inside the support beam 3, thereby improving the preheating effect of the air and increasing the temperature of the air entering the combustion chamber 20, which in turn further promotes the combustion of coal gangue particles and further ensures the self-stabilized combustion of coal gangue particles.

[0054] The support beam 3 is equipped with a discharge spiral section 32, which is opposite to the discharge port 22. The support beam 3 rotates synchronously with the inner cylinder 2, and the discharge spiral section 32 transports the soot produced after the coal gangue particles are burned to the outside of the cylinder 23.

[0055] Furthermore, the inner cylinder 2 forms a contraction opening at the discharge port 22, meaning the diameter of the discharge port 22 is smaller than the diameter of the cylinder 23, and the discharge port 22 has a gradually decreasing diameter. Figure 1 As shown, the discharge port 22 with a gradually narrowing diameter reduces the speed at which coal gangue material is discharged and increases the residence time of coal gangue inside the cylinder 23, thereby further increasing the high-temperature combustion time of coal gangue and ensuring the complete combustion of coal gangue particles.

[0056] The coal gangue incineration device 100 further includes multiple collision balls (not shown in the figure), which are located inside the combustion chamber 20. During the rotation of the inner cylinder 2, the multiple collision balls tumble and collide within the inner cylinder 2. When the collision balls impact the coal gangue particles, they not only further reduce the particle size of the coal gangue particles, but also knock off the soot adhering to the surface of the coal gangue particles, allowing the unburned coal gangue particles to continue to participate in combustion, thereby further ensuring the complete combustion of the coal gangue particles.

[0057] Specifically, the colliding ball is made of iron.

[0058] Specifically, both the outer cylinder 1 and the cylinder body 23 are equipped with inspection doors. Personnel can use the inspection doors to put the collision ball into or take it out of the combustion chamber 20. They can also use the inspection doors to enter the inner side of the outer cylinder 1 (flow chamber 10) or the inner side of the cylinder body 23 (combustion chamber 20) for maintenance.

[0059] In some embodiments, the coal gangue incineration device 100 of this utility model includes a material guiding structure disposed on the inner wall surface of the inner cylinder 23. The material guiding structure rotates with the inner cylinder 2, thereby driving the material in the combustion chamber 20 from the feed inlet 21 to the discharge outlet 22. The material guiding structure facilitates control of the residence time of coal gangue particles in the combustion chamber 20.

[0060] In some embodiments, the preset direction is at an angle to the horizontal direction, with the discharge port 22 located at the lower end of the inner cylinder 2 and the slag discharge port 11 located at the lower end of the outer cylinder 1. During the rotation of the inner cylinder 2, the material inside the inner cylinder 2 continuously tumbles and moves from the feed port 21 towards the discharge port 22. The soot discharged from the discharge port 22 naturally falls into the outer cylinder 1 and is discharged from the slag discharge port 11 at the lower end of the outer cylinder 1, ensuring smooth slag discharge of the coal gangue incineration device 100 and ensuring that the residence time of coal gangue particles in the combustion chamber exceeds 30 minutes.

[0061] like Figure 1As shown, the ash discharge port 11 is located below the discharge port 22. The soot discharged from the discharge port 22 falls into the ash discharge port 11 and is discharged from the ash discharge port 11, ensuring the smooth ash discharge of this coal gangue incineration device 100.

[0062] In some other embodiments, the preset direction is parallel to the horizontal direction, that is, the inner cylinder 2 is in a horizontal state.

[0063] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0064] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0066] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0067] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A coal gangue incineration device (100), characterized in that, include: The outer cylinder (1) is provided with a slag discharge port (11) and a smoke discharge port (12); The inner cylinder (2) is disposed inside the outer cylinder (1) and rotatably connected to the outer cylinder (1). A flow cavity (10) is formed between the inner cylinder (2) and the outer cylinder (1). The inner cylinder (2) has a combustion chamber (20). The inner cylinder (2) has an inlet (21) and an outlet (22) at both ends in a preset direction. The combustion chamber (20) is connected to the flow cavity (10) through the outlet (22). The outlet (22) is away from the exhaust port (12) in the preset direction. A support beam (3) is provided inside the outer cylinder (1) and the inner cylinder (2). The support beam (3) is connected to the combustion chamber (20) to allow air to enter the combustion chamber (20).

2. The coal gangue incineration device (100) according to claim 1, characterized in that, The inner cylinder (2) includes a cylinder body (23) and a feed pipe (24). The cylinder body (23) defines the combustion chamber (20). One end of the feed pipe (24) forms the feed inlet (21), and the other end of the feed pipe (24) is connected to the cylinder body (23). The feed pipe (24) is rotatably disposed in the outer cylinder (1), and a portion of the feed pipe (24) is located inside the outer cylinder (1).

3. The coal gangue incineration device (100) according to claim 2, characterized in that, The support beam (3) is fixedly connected to the cylinder (23). One end of the support beam (3) passes through the feed pipe (24). The support beam (3) is provided with a feed spiral section (31), which is opposite to the feed port (21).

4. The coal gangue incineration device (100) according to claim 1, characterized in that, The other end of the support beam (3) is located outside the outer cylinder (1) and is used to connect to the air source. The other end of the support beam (3) is located on the side of the outer cylinder (1) away from the exhaust port (12) in the preset direction.

5. The coal gangue incineration device (100) according to claim 1, characterized in that, The support beam (3) passes through the discharge port (22) and is fixedly connected to the inner cylinder (2). The support beam (3) is provided with a discharge spiral section (32) and the discharge spiral section (32) is opposite to the discharge port (22).

6. The coal gangue incineration device (100) according to claim 1, characterized in that, The support beam (3) is provided with multiple air outlets (33), and the air outlets (33) are connected to the ventilation channel.

7. The coal gangue incineration device (100) according to claim 6, characterized in that, In the preset direction, a plurality of the air outlets (33) are located in the middle of the combustion chamber (20) and on one side adjacent to the discharge port (22); And / or, the coal gangue incineration device (100) further includes an air duct, which is disposed on the support beam (3) and communicates with the air outlet (33).

8. The coal gangue incineration device (100) according to claim 1, characterized in that, It further includes a support rod (4) that connects the support beam (3) and the inner cylinder (2); And / or, there is an angle between the preset direction and the horizontal direction, the discharge port (22) is located at the lower end of the inner cylinder (2), and the slag discharge port (11) is located at the lower end of the outer cylinder (1); And / or, further includes a material guiding structure disposed on the inner wall surface of the inner cylinder (2).

9. The coal gangue incineration device (100) according to claim 1, characterized in that, It further includes a plurality of collision balls located within the combustion chamber (20).

10. A coal gangue incineration system, characterized in that, include: Crushing equipment; and A coal gangue incineration device (100), wherein the coal gangue incineration device (100) is the coal gangue incineration device (100) according to any one of claims 1-9, and the feed inlet (21) is connected to the discharge outlet of the crushing device.

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