A rotary combustible waste treatment apparatus and method

Abstract

This invention discloses a rotary combustible waste treatment device and method, belonging to the field of combustible waste treatment technology. The device includes a feeding system and an incineration system connected to the feeding system. A solid panel, a mesh panel, and a spray aeration mechanism in the feeding system are located inside the feeding unit. The solid panel and mesh panel are arranged vertically, and the spray aeration mechanism is located between the solid panel and the mesh panel. The solid panel, mesh panel, and spray aeration mechanism are all connected to a control unit, which controls the opening and closing of the solid panel, mesh panel, and spray aeration mechanism. The burner in the incineration system is located on the outer kiln body of the rotary kiln and connected to the inner kiln cylinder. The inner kiln cylinder is located inside the outer kiln body. The inlet section of the inner kiln cylinder is connected to the tail end of the feeding system. The waste discharge opening of the inner kiln cylinder is located at the outlet section of the inner kiln cylinder, and the waste discharge opening connects to the exhaust gas pipe and the waste discharge channel of the kiln body. This treatment device enables a high degree of matching between the spraying of reducing agent and the feeding pattern of materials, so as to maintain the reducing atmosphere inside the incineration system and prevent the neutralization level of the reducing agent in the furnace from being exceeded due to excessive combustion of materials. It can purify the toxic gaseous pollutants generated during the incineration of combustible solid waste.

Description

Technical Field

[0001] This invention belongs to the field of combustible waste treatment technology, specifically relating to a rotary combustible waste treatment device and treatment method. Background Technology

[0002] Incineration is one of many methods for treating combustible solid waste, but it poses significant environmental and health risks. During the high-temperature thermal degradation process, combustible solid waste may release various pollutants, which can severely threaten the ecological environment and human health. Furthermore, the incineration of combustible solid waste also produces greenhouse gases such as carbon dioxide.

[0003] When incineration is used to treat combustible solid waste, it is necessary to control the amount of material used in each combustion to avoid causing serious environmental pollution due to excessive material combustion exceeding the neutralization level of the reducing agent in the furnace.

[0004] In current in-furnace incineration technologies, material feeding exhibits discrete characteristics, and the system employs a reducing agent solution for spraying to optimize the combustion process. However, a significant drawback exists in these technologies: the spraying pattern of the reducing agent solution lacks effective coordination with the opening and closing sequence of the feed valves. This results in a mismatch between the delivery patterns of the reducing agent and the material, making precise synchronization difficult and thus hindering the maintenance of a reducing atmosphere within the incineration system.

[0005] Therefore, ensuring a high degree of consistency between the material feeding process and the reducing agent spraying strategy during in-furnace incineration, and avoiding severe environmental pollution caused by excessive material combustion exceeding the neutralization level of the reducing agent in the furnace, has become a pressing technical challenge. To overcome this challenge, the development of an innovative rotary combustible waste treatment system is particularly urgent. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention aims to provide a rotary combustible waste treatment device and treatment method. The system has the ability to precisely control the timing of material input and reducing agent spraying, so as to make the spraying of reducing agent and the material delivery pattern highly matched, so as to maintain the reducing atmosphere inside the incineration system and avoid exceeding the neutralization level of the reducing agent in the furnace due to excessive material combustion. It can purify the toxic gaseous pollutants generated during the incineration of combustible solid waste.

[0007] To achieve the above objectives, the present invention employs the following technical solution:

[0008] The present invention provides a rotary combustible waste treatment device, including a feeding system and an incineration system connected to the feeding system;

[0009] The feeding system includes a feeding unit, a solid panel, a mesh panel, a spray ventilation mechanism, and a control unit. The solid panel, mesh panel, and spray ventilation mechanism are located inside the feeding unit. The solid panel and mesh panel are arranged vertically, and the spray ventilation mechanism is located between the solid panel and mesh panel. The solid panel, mesh panel, and spray ventilation mechanism are all connected to the control unit, which is used to control the opening and closing of the solid panel, mesh panel, and spray ventilation mechanism.

[0010] The incineration system includes an outer kiln body, an inner kiln cylinder, a waste discharge opening in the inner kiln cylinder, a waste gas exhaust pipe, a waste discharge channel in the kiln body, and a burner. The burner is installed on the outer kiln body and connected to the inner kiln cylinder. The inner kiln cylinder is located inside the outer kiln body. The inlet section of the inner kiln cylinder is connected to the tail end of the feeding system. The waste discharge opening in the inner kiln cylinder is located at the outlet section of the inner kiln cylinder. The waste discharge opening in the inner kiln cylinder is connected to the waste gas exhaust pipe and the waste discharge channel in the kiln body.

[0011] In one embodiment, the control unit includes a solid panel control unit, a mesh panel control unit, and a sprinkler ventilation control unit;

[0012] The solid panel control unit is connected to the solid panel and is used to control the opening and closing of the solid panel;

[0013] The mesh panel control unit is connected to the mesh panel and is used to control the opening and closing of the mesh panel.

[0014] The spray ventilation control unit is connected to the spray ventilation mechanism, and the spray ventilation control unit is used to control the opening and closing of the spray ventilation mechanism.

[0015] In one embodiment, the solid panel control unit and the mesh panel control unit are disposed outside the feeding unit.

[0016] In one embodiment, the spray ventilation mechanism includes a feeding cylinder side shell, a reducing agent liquid tank, and a dual-pipe spray pipeline;

[0017] The outer shell of the feeding cylinder is located outside the feeding unit, the reducing agent liquid tank is located inside the outer shell of the feeding cylinder, the dual-pipe spray pipe is connected to the reducing agent liquid tank, and the spray outlet of the dual-pipe spray pipe is located between the solid panel flipping mechanism and the mesh panel flipping mechanism.

[0018] In one embodiment, the dual-pipe spray system includes a reducing agent spray system and an air system;

[0019] The reducing agent spray pipe is connected to the reducing agent liquid tank, and the air pipe passes through the reducing agent liquid tank.

[0020] In one embodiment, the feeding unit includes a feeding funnel and a feeding cylinder disposed below the feeding funnel, wherein the inlet section of the feeding funnel and the outlet section of the feeding cylinder are connected to the outside.

[0021] In one embodiment, inner wall lifting plates and ceramic liners are alternately arranged on the inner wall of the rotary kiln cylinder.

[0022] In one embodiment, a rotational support structure between the inner kiln cylinder and the outer kiln body is provided on the outer wall of the inner kiln cylinder of the rotary kiln, and the rotational support structure between the inner kiln cylinder and the outer kiln body of the rotary kiln is located between the inner kiln cylinder and the outer kiln body of the rotary kiln.

[0023] The present invention also provides a rotary combustible waste treatment method, comprising the following steps:

[0024] The material is transferred to the feeding unit and falls onto the solid panel. The solid panel and the mesh panel are in a closed state. The control unit opens the spray ventilation mechanism to introduce air to continuously generate a negative pressure environment inside the combustion system. The control unit opens the solid panel, and the material falls onto the mesh panel. Then, the control unit opens the mesh panel and the spray ventilation mechanism at the same time. The falling material enters the combustion system while air is continuously introduced and reducing agent is sprayed. After a period of time, the reducing agent spraying ends. The control unit closes the reducing agent spraying of the mesh panel and the spray ventilation mechanism, and always maintains air supply.

[0025] As the material is fed through the outer kiln body of the rotary kiln into the inner kiln cylinder for combustion, the reducing agent also enters, creating a reducing atmosphere within the kiln cylinder. The outer kiln body is raised at a certain angle, and the inner kiln cylinder rotates, carrying the material to the highest point on the inner wall before it falls. During this process, the material is continuously sprayed by the flames of the burner as it falls, thus being burned.

[0026] The waste and exhaust gas after the reaction are completed will be discharged from the waste discharge opening in the inner kiln cylinder, the waste discharge channel in the kiln body, and the exhaust gas pipe, respectively. At the same time, the induced draft fan will generate a negative pressure environment inside the rotary kiln through the exhaust gas pipe. During this incineration operation, the spray ventilation mechanism will continuously introduce air to maintain the reducing atmosphere inside the incineration system.

[0027] Repeat the above steps to feed the material again for incineration.

[0028] In one embodiment, the process further includes in-furnace heat storage before incineration, the in-furnace heat storage process comprising the following steps:

[0029] The burner is started in advance and the heat storage medium is put into the furnace for heat storage. After the heat storage medium in the kiln tube of the rotary kiln reaches the temperature standard required for combustion, the combustion operation is carried out.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] This invention provides a rotary combustible waste treatment device. Through a feeding system consisting of a solid panel, a mesh panel, and a spray aeration mechanism, it achieves precise control over the timing of material delivery and the spraying of the reducing agent. The vertical arrangement of the solid and mesh panels and their connection to the control unit allow for precise regulation of the material's descent timing. The spray aeration mechanism, positioned between the solid and mesh panels and connected to the control unit, ensures a high degree of synchronization between the spraying of the reducing agent solution and the material's descent. Reducing agent spraying occurs simultaneously with the material's descent, effectively maintaining a reducing atmosphere within the incineration system and preventing excessive combustion of material from exceeding the neutralization level of the reducing agent within the furnace.

[0032] Furthermore, the use of the mesh panel allows the spray ventilation mechanism to continuously supply air after the mesh panel is closed during the incineration process, maintaining a negative pressure environment inside the feeding unit and the incineration system.

[0033] Furthermore, the spray ventilation mechanism includes the outer shell on the side of the feeding cylinder, the reducing agent liquid tank, and the dual-pipe spray pipeline. The dual-pipe spray pipeline allows the reducing agent spray pipeline and the air pipeline to work independently, ensuring both accurate spraying of the reducing agent and a continuous supply of air required during the combustion process.

[0034] Furthermore, the alternating inner wall lifters and ceramic lining on the inner wall of the rotary kiln cylinder, along with the rotating support structure on the outer wall, together ensure the stability and durability of the rotary kiln during rotation. The design also contributes to the uniform distribution and complete combustion of materials.

[0035] This invention also provides a rotary combustible waste treatment method. A control unit controls the material transfer, the opening and closing of the solid panel and mesh panel, and the timing of the aeration and reducing agent spraying of the spray ventilation mechanism. This ensures that the material falling onto the mesh panel and the start and end of the reducing agent spraying are closely coordinated, maintaining a high degree of consistency between the material delivery and the reducing agent spraying pattern. Furthermore, during this process, the spray ventilation mechanism continuously injects air, thereby maintaining a negative pressure environment within the feeding unit and the incineration system, reducing its temperature, and preventing gas leakage at the feeding unit.

[0036] Furthermore, in-furnace heat storage can solve the problem of rapid heat loss and high overall energy consumption during equipment operation due to the lack of pre-stored heat storage materials inside the furnace. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the feeding system of the rotary combustible waste treatment device provided by the present invention.

[0038] Figure 2This is a schematic diagram of the overall structure of the rotary combustible waste treatment device provided by the present invention.

[0039] Figure 3 This is a schematic diagram of the structure of the kiln cylinder inside the rotary kiln provided by the present invention;

[0040] Wherein: 1-Feed hopper; 2-Solid panel control unit; 3-Mesh panel control unit; 4-Feed cylinder side shell; 5-Reducing agent liquid tank; 6-Feed cylinder body; 7-Solid panel; 8-Dual-pipe spray pipe; 9-Mesh panel; 10-Reducing agent spray pipe; 11-Air pipe; 12-Feeding system; 13-Rotary kiln outer body; 14-Rotary kiln inner cylinder; 15-Inner wall lifting plate; 16-Ceramic lining; 17-Rotary support structure between inner cylinder and outer kiln body; 18-Inner kiln waste discharge opening; 19-Waste gas discharge pipe; 20-Rotary kiln base; 21-Kiln body waste discharge channel; 22-Burner. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. 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 should fall within the scope of protection of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] The present invention will now be described in further detail with reference to the accompanying drawings:

[0044] See Figure 2As shown, the present invention provides a rotary combustible waste treatment device, including a feeding system 12 and an incineration system connected to the feeding system 12. The rotary combustible waste treatment device can maintain a reducing atmosphere inside the incineration system to purify the toxic gaseous pollutants generated during the incineration of combustible solid waste. It can solve the problems of existing combustible solid waste treatment methods that cannot maintain a good reducing atmosphere inside the incineration system and the problems of the atmosphere maintenance system not being able to match the feeding pattern of the feeding system well.

[0045] Among them, see Figure 1 As shown in the middle figures (a~c), the above-mentioned feeding system 12 consists of a feeding unit, a solid panel 7, a mesh panel 9, a spray ventilation mechanism, and a control unit.

[0046] See Figure 2 As shown, the solid panel 7, the mesh panel 9, and the spray ventilation mechanism are located inside the feeding unit. The solid panel 7 is located above the mesh panel 9, and the spray ventilation mechanism is located between the solid panel 7 and the mesh panel 9. The solid panel 7, the mesh panel 9, and the spray ventilation mechanism are all connected to the control unit, which is used to control the opening and closing of the solid panel 7, the mesh panel 9, and the spray ventilation mechanism.

[0047] More specifically, the control unit is used to control the pneumatic flipping of the solid panel 7 and the mesh panel 9 to achieve opening and closing, and the control unit is used to control the air supply of the spray ventilation mechanism and the spraying of the reducing agent.

[0048] In the specific implementation process, the control unit specifically includes a solid panel control unit 2, a mesh panel control unit 3, and a spray ventilation control unit; the solid panel control unit 2 is connected to the solid panel 7 and is used to control the opening and closing of the solid panel 7; the mesh panel control unit 3 is connected to the mesh panel 9 and is used to control the opening and closing of the mesh panel 9; the spray ventilation control unit is connected to the spray ventilation mechanism and is used to control the opening and closing of the spray ventilation mechanism to realize air introduction and reducing agent spraying.

[0049] The feeding unit consists of a feeding funnel 1 and a feeding cylinder 6, with the feeding cylinder 6 positioned below the feeding funnel 1. Only the inlet section of the feeding funnel 1 and the outlet section of the feeding cylinder 6 are connected to the outside; the rest of the device remains sealed to the outside.

[0050] The solid panel 7 is located 20cm below the inlet of the feeding cylinder 6, and the double mesh panel 9 is located 20cm below the pipeline spray pipe 8.

[0051] The aforementioned solid panel control unit 2 and mesh panel control unit 3 are located on the outside of the feeding unit, specifically on the outer wall of the feeding cylinder 6.

[0052] The photoelectric sensor on the solid panel 7 can detect whether the material has fallen into the inlet section of the feeding cylinder 6. The photoelectric sensor collects the light signal when the material falls, converts it into an electrical signal and inputs it into its own processor. The signal is then transmitted to the solid panel control unit 2, the mesh panel control unit 3, and the spray ventilation control unit in the form of an electrical signal. The system is connected to the spray ventilation control unit through electrical control and they work together to maintain the internal atmosphere level of the incineration system.

[0053] The above-mentioned spray ventilation mechanism includes a feeding cylinder side shell 4, a reducing agent liquid tank 5, and a dual-pipe spray pipe 8 consisting of a reducing agent spray pipe 10 and an air pipe 11.

[0054] The dual-pipe spray pipe 8 includes a reducing agent spray pipe 10 and an air pipe 11; the outer shell 4 of the feeding cylinder body is set on the outside of the feeding cylinder body 6, the reducing agent liquid tank 5 is located in the outer shell 4 of the feeding cylinder body, the reducing agent liquid tank 5 is connected to the reducing agent spray pipe 10 in the dual-pipe spray pipe 8, the air pipe 11 passes through the reducing agent liquid tank 5, the spray outlet of the dual-pipe spray pipe 8 is located between the solid panel flipping mechanism and the mesh panel flipping mechanism, and the spray outlet faces downward toward the mesh panel 9.

[0055] Air duct 11 passes through reducing agent liquid tank 5. At the same time, air duct 11 and reducing agent spray duct 10 share a dual-pipe spray duct 8, and the reducing agent and air are sprayed into the combustion system 13 according to the programmed settings and the electrical signal fed back by the pneumatically flipped solid panel 7.

[0056] The aforementioned air duct 11 maintains a constant air injection state, thereby maintaining a negative pressure environment between the feeding cylinder 6 and the inside of the incineration system, reducing its temperature, and preventing gas leakage from the incineration system at the feeding funnel 1.

[0057] like Figure 2 As shown, the above-mentioned incineration system specifically includes a rotary kiln outer kiln body 13, a rotary kiln inner kiln cylinder 14, an inner kiln cylinder waste discharge opening 18, a waste gas discharge pipe 19, a rotary kiln base 20, a kiln body waste discharge channel 21, and a burner 22.

[0058] The outer kiln body 13 of the rotary kiln is set on the rotary kiln base 20, the burner 22 is set on the outer kiln body 13, the inner kiln cylinder 14 of the rotary kiln is connected to the burner 22, the inner kiln cylinder 14 is set inside the outer kiln body 13, the inlet section of the inner kiln cylinder 14 is connected to the tail of the feeding system 12, the waste discharge opening 18 of the inner kiln cylinder is set at the outlet section of the inner kiln cylinder 14, and the waste discharge opening 18 of the inner kiln cylinder is connected to the exhaust gas pipe 19 and the waste discharge channel 21 of the kiln body.

[0059] Among them, see Figure 3The inner wall of the rotary kiln cylinder 14 is alternately provided with inner wall lifting plates 15 and ceramic lining 16. The outer wall of the rotary kiln cylinder 14 is provided with a rotating support structure 17 between the inner kiln cylinder and the outer kiln body. The rotating support structure 17 between the inner kiln cylinder 14 and the outer kiln body 13 is located between the inner kiln cylinder 14 and the outer kiln body 13.

[0060] The inner wall of the rotary kiln cylinder 14 consists of two parts: the inner wall lifting plate 15 and the ceramic lining 16. The inner wall lifting plate 15 is a custom-made ceramic casting. The two are assembled in an alternating manner to form the main structure of the rotary kiln cylinder 14, which greatly improves the comprehensive performance of the rotating component in terms of high temperature resistance, corrosion resistance, and vibration resistance, providing basic safety assurance and technical support for the incineration of materials.

[0061] In another aspect, the present invention provides a rotary combustible waste treatment method, comprising the following steps:

[0062] S1: The material is transferred to the feeding unit and falls onto the solid panel 7. The solid panel 7 and the mesh panel 9 are in a closed state. The control unit opens the spray ventilation mechanism to introduce air in order to continuously generate a negative pressure environment inside the combustion system. The control unit opens the solid panel 7 and the material falls onto the mesh panel 9. Then the control unit opens the mesh panel 9 and the spray ventilation mechanism at the same time. The falling material enters the combustion system while air is continuously introduced and reducing agent is sprayed. After a period of time, the reducing agent spraying ends. The control unit closes the mesh panel 9 and the reducing agent spraying of the spray ventilation mechanism, and always maintains air supply.

[0063] S2: As the material falls from the outer kiln body 13 of the rotary kiln into the inner kiln cylinder 14 of the rotary kiln for combustion, the reducing agent also enters. The reducing agent will create a reducing atmosphere in the inner kiln cylinder 14 of the rotary kiln. The outer kiln body 13 of the rotary kiln is raised at a certain angle, and the inner kiln cylinder 14 of the rotary kiln rotates, carrying the material to the highest point of the inner wall and then falling down. During this process, the material is continuously sprayed by the flame of the burner 22 as it falls, thereby being burned.

[0064] S3: The waste and exhaust gas after the reaction will be discharged from the waste discharge opening 18 in the inner kiln cylinder, the waste discharge channel 21 in the kiln body, and the exhaust gas pipe 19, respectively. At the same time, the induced draft fan will generate a negative pressure environment inside the rotary kiln through the exhaust gas pipe 19. During this incineration operation, the spray ventilation mechanism will continuously introduce air to maintain the reducing atmosphere inside the incineration system.

[0065] S4: Repeat the above steps to feed the material again for incineration.

[0066] Prior to the aforementioned incineration operation, an in-furnace heat storage operation is also included. More specifically, before the formal incineration operation, the burner 22 must be started and a heat storage medium (quartz sand) must be introduced to perform in-furnace heat storage. Only after the heat storage medium (quartz sand) in the kiln cylinder 14 of the rotary kiln reaches the temperature standard required for incineration can the next step of material incineration be carried out according to the operating procedures. The aforementioned pre-heat storage operation is used to solve the problem of rapid heat loss and high overall energy consumption during equipment operation due to the lack of pre-heat storage medium material inside the furnace.

[0067] After the above-mentioned in-furnace regenerative operation is completed, the reducing agent, air, and materials will enter the incineration system in the programmed sequence for reaction. The reacted waste and exhaust gas will be discharged from the waste discharge opening 18 in the inner kiln cylinder, the waste discharge channel 21 in the kiln body, and the exhaust gas pipe 19, respectively. At the same time, the rotary combustible waste treatment device will generate a negative pressure environment inside the rotary kiln through the exhaust gas pipe 19 by an induced draft fan.

[0068] Example 1

[0069] This embodiment provides a rotary combustible waste treatment device, such as... Figure 1 As shown, it includes: a feeding unit, on which the side of the feeding cylinder 6 is connected to the feeding cylinder side shell 4 in the furnace atmosphere control unit. At the same time, a pneumatic tilting unit is set at a certain distance in the vertical direction inside the feeding cylinder 6. The entire equipment processes the waste energetic materials from top to bottom until they are sent into the incineration system.

[0070] In the feeding unit, material is fed into the feeding hopper 1 and falls into the head of the feeding cylinder 6 and the upper part of the solid panel 7. After the previous batch of material is processed, the solid panel control unit 2 controls the solid panel 7 to open while the mesh panel 9 remains closed. The material then falls into the middle section of the feeding cylinder 6, which is the upper part of the mesh panel 9. Once there is no material on the solid panel 7, the solid panel control unit 2 closes it. After a 3-second wait, the mesh panel control unit controls the mesh panel 9 to open, and simultaneously the spray ventilation control unit controls the reducing agent liquid tank 5 to open, maintaining both the reducing agent liquid tank 5 and the mesh panel 9 open for 10 seconds. Afterward, the mesh panel 9 closes. During this process, the air duct 11 remains operational. Finally, the material falls into the incineration system for incineration, maintaining a reducing atmosphere. The entire equipment awaits the next material delivery, thus achieving discrete feeding while effectively maintaining a reducing atmosphere within the incineration system.

[0071] Example 2

[0072] This embodiment provides a rotary combustible waste treatment device, including a feeding system 12 and an incineration system connected to the feeding system 12. The feeding system 12 consists of a feeding unit, a pneumatically flipped solid panel 7, a mesh panel 9, a spray ventilation mechanism, and a control unit.

[0073] The atmosphere control inside the incineration system takes into account the intermittent working characteristics of the feed valve and the reducing agent liquid tank 5. Through the programmed actions between each unit, the reducing atmosphere inside the incineration system is maintained within a reasonable range.

[0074] The aforementioned feeding unit consists of a feeding funnel 1 and a feeding cylinder 6; this unit mainly carries out the transportation of combustible solid waste, reducing agent liquid and air into the incineration system.

[0075] The solid panel 7 is located 20cm below the inlet of the feeding cylinder 6, and the mesh panel 9 is located 20cm below the dual-pipe spray pipe 8. The solid panel 7 and the mesh panel 9 are respectively connected to the solid panel control unit 2 and the mesh panel control unit 3.

[0076] The coordinated movement between the pneumatically flipped solid panel 7 and the mesh panel 9 is also designed based on the processing of the previous batch of materials and the intermittent working characteristics of the reducing agent liquid tank 5.

[0077] The above-mentioned spray ventilation mechanism consists of a feeding cylinder side shell 4, a reducing agent liquid tank 5, a reducing agent spray pipe 10, an air pipe 11, and a dual-pipe spray pipe 8.

[0078] The incineration system consists of Figure 2 The rotary kiln consists of the outer kiln body 13, the inner kiln cylinder 14, the inner wall lifting plate 15, the ceramic lining 16, the rotating support structure between the inner kiln cylinder and the outer kiln body 17, the waste discharge opening of the inner kiln cylinder 18, the waste gas discharge pipe 19, the rotary kiln base 20, the waste discharge channel of the kiln body 21, and the burner 22.

[0079] The working processes of the feeding unit, the pneumatically flipped solid panel 7, the mesh panel 9, and the spray ventilation mechanism in the above feeding system are as follows:

[0080] In the feeding unit, when material falls into the feeding hopper 1 and reaches the solid panel 7, both the solid panel 7 and the mesh panel 9 are in a closed state, while the air duct 11 continues to operate normally. This is to continuously generate a negative pressure environment inside the incineration system and prevent the escape of toxic pollutant gases, while also serving to cool the feeding hopper 1 and the feeding cylinder 6. After the previous batch of combustible solid waste falls into the incineration system and is processed, the solid panel control unit 2 controls the solid panel 7 to open and allow the material to fall onto the mesh panel 9. After waiting 3 seconds, with the activation of the spray ventilation mechanism and the opening of the mesh panel 9, the combustible solid waste enters the next stage of the incineration system.

[0081] The pneumatically operated rotating solid panel 7 and mesh panel 9 are programmed according to the position of the combustible solid waste relative to them. For example, when the material to be processed is not currently being fed into the feeding system, solid panel 7 remains closed, and it remains open until the previous batch of material has been processed. At this point, solid panel 7 opens, allowing the material above it to fall. During this process, mesh panel 9 remains closed, and the material falls onto mesh panel 9. When the reducing agent liquid tank 5 is ready to spray reducing agent, mesh panel 9 opens, allowing the material to fall into the incineration system for combustion.

[0082] The spray ventilation mechanism and spray ventilation control unit, the reducing agent liquid tank 5 mainly undertake the following tasks: when the pneumatically flipped screen panel 9 is fully opened, the spray nozzle of the reducing agent spray pipe 10 connected to the reducing agent liquid tank 5 is activated, and the combustible solid waste that has fallen onto the screen panel 9 beforehand falls into the incineration system. During the period of keeping the screen panel 9 open for 10 seconds, the reducing agent liquid tank 5 also sprays for 10 seconds. After the 10-second period ends, the screen panel 9 is closed and the reducing agent liquid tank 5 is closed, while the air pipe 11 continues to spray.

[0083] The working process of the above incineration system is as follows:

[0084] S1: In-furnace regenerative operation: During the preheating operation, the various parameters of the incineration system should be adjusted first, and both valves of the feeding system should be kept open. Then, the regenerative material required for this test should be added through the feeding system. After the preheating preparation parameters are set, the incineration system can gradually preheat until the required material incineration temperature is reached.

[0085] S2: Incineration Operation: After the system preheating is complete, during the incineration operation, when the material passes through the feeding system 12, it will reach the interior of the incineration system. At this time, the kiln cylinder 14 inside the rotary kiln will drive the inner wall lifting plates 15 installed on its inner wall to rotate, and the material will be carried to the highest point of the inner wall and then fall. During this process, the material will be continuously sprayed by the flame of the burner 22 as it falls, thus performing the incineration operation.

[0086] Meanwhile, in order to ensure that the material in the kiln cylinder 14 inside the rotary kiln moves towards the waste discharge opening 18 in the inner kiln cylinder during actual operation, the entire rotary kiln needs to be raised to a certain angle by the hydraulic system to facilitate the movement of the material.

[0087] As the material enters the incineration system, the reducing agent, as described above, also enters. The reducing agent creates a reducing atmosphere within the rotary kiln cylinder 14 to suppress the generation of large amounts of waste gas. After the material and reducing agent are incinerated within the rotary kiln cylinder 14, the remaining waste and generated waste gas will be discharged from the waste discharge channel 21 and the waste gas discharge pipe 19 respectively, under the influence of gravity and the negative pressure environment within the kiln.

[0088] In summary, in this invention, the control unit of the pneumatic flipping mechanism and the control unit of the spray ventilation mechanism that controls the atmosphere inside the furnace are interconnected through an electronic control system to realize their programmed actions, thereby achieving the maintenance of a reducing atmosphere in the combustion system while feeding discrete materials.

[0089] The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made to the technical solution based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A rotary combustible waste treatment device, characterized in that, It includes a feeding system (12) and an incineration system connected to the feeding system (12), wherein the feeding system (12) includes a feeding unit, a solid panel (7), a mesh panel (9), a spray ventilation mechanism and a control unit; The solid panel (7), the mesh panel (9) and the spray ventilation mechanism are arranged inside the feeding unit. The solid panel (7) and the mesh panel (9) are arranged vertically, and the spray ventilation mechanism is arranged between the solid panel (7) and the mesh panel (9). The solid panel (7), the mesh panel (9) and the spray ventilation mechanism are all connected to the control unit, which is used to control the opening and closing of the solid panel (7), the mesh panel (9) and the spray ventilation mechanism; The incineration system includes an outer kiln body (13), an inner kiln cylinder (14), a waste discharge opening (18) in the inner kiln cylinder, a waste gas discharge pipe (19), a waste discharge channel (21) in the kiln body, and a burner (22). The burner (22) is installed on the outer kiln body (13) of the rotary kiln and connected to the inner kiln cylinder (14) of the rotary kiln. The inner kiln cylinder (14) is installed inside the outer kiln body (13) of the rotary kiln. The inlet section of the inner kiln cylinder (14) is connected to the tail of the feeding system (12). The waste discharge opening (18) of the inner kiln cylinder is installed at the outlet section of the inner kiln cylinder (14) of the rotary kiln. The waste discharge opening (18) of the inner kiln cylinder is connected to the exhaust gas pipe (19) and the waste discharge channel (21) of the kiln body. The spray ventilation mechanism includes a feeding cylinder side shell (4), a reducing agent liquid tank (5), and a dual-pipe spray pipe (8). The outer shell (4) of the feeding cylinder body is located outside the feeding unit, the reducing agent liquid tank (5) is located in the outer shell (4) of the feeding cylinder body, the dual-pipe spray pipe (8) is connected to the reducing agent liquid tank (5), and the spray outlet of the dual-pipe spray pipe (8) is located between the solid panel flipping mechanism and the mesh panel flipping mechanism. The dual-pipe spray pipe (8) includes a reducing agent spray pipe (10) and an air pipe (11). The reducing agent spray pipe (10) is connected to the reducing agent liquid tank (5), and the air pipe (11) passes through the reducing agent liquid tank (5).

2. The rotary combustible waste treatment device according to claim 1, characterized in that, The control unit includes a solid panel control unit (2), a mesh panel control unit (3), and a spray ventilation control unit; The solid panel control unit (2) is connected to the solid panel (7), and the solid panel control unit (2) is used to control the opening and closing of the solid panel (7); The mesh panel control unit (3) is connected to the mesh panel (9), and the mesh panel control unit (3) is used to control the opening and closing of the mesh panel (9); The spray ventilation control unit is connected to the spray ventilation mechanism, and the spray ventilation control unit is used to control the opening and closing of the spray ventilation mechanism.

3. The rotary combustible waste treatment device according to claim 2, characterized in that, The solid panel control unit (2) and the mesh panel control unit (3) are located on the outside of the feeding unit.

4. The rotary combustible waste treatment device according to claim 1, characterized in that, The feeding unit includes a feeding funnel (1) and a feeding cylinder (6) located below the feeding funnel (1). The inlet section of the feeding funnel (1) and the outlet section of the feeding cylinder (6) are connected to the outside.

5. The rotary combustible waste treatment device according to claim 1, characterized in that, The inner wall of the rotary kiln cylinder (14) is alternately provided with inner wall lifting plates (15) and ceramic lining (16).

6. The rotary combustible waste treatment device according to claim 1, characterized in that, The inner kiln cylinder (14) of the rotary kiln is provided with a rotating support structure (17) between the inner kiln cylinder and the outer kiln body. The rotating support structure (17) between the inner kiln cylinder and the outer kiln body is located between the inner kiln cylinder (14) and the outer kiln body (13) of the rotary kiln.

7. A rotary combustible waste treatment method, characterized in that, The rotary combustible waste treatment device as described in any one of claims 1 to 6 includes the following steps: The material is transferred to the feeding unit and falls onto the solid panel (7). The solid panel (7) and the mesh panel (9) are in a closed state. The control unit opens the spray ventilation mechanism to introduce air in order to continuously generate a negative pressure environment inside the combustion system. The control unit opens the solid panel (7) and the material falls onto the mesh panel (9). Then the control unit opens the mesh panel (9) and the spray ventilation mechanism at the same time. The falling material enters the combustion system. At the same time, air is continuously introduced and reducing agent is sprayed. After a period of time, the reducing agent spraying ends. The control unit closes the mesh panel (9) and the reducing agent spraying of the spray ventilation mechanism, and always maintains air supply. As the material is fed through the outer kiln body (13) of the rotary kiln into the inner kiln cylinder (14) of the rotary kiln for incineration, the reducing agent is also introduced. The reducing agent will create a reducing atmosphere in the inner kiln cylinder (14). The outer kiln body (13) of the rotary kiln is raised at a certain angle, and the inner kiln cylinder (14) of the rotary kiln rotates, carrying the material to the highest point of the inner wall and then falling down. During this process, the material will be continuously sprayed by the flame of the burner (22) for incineration as it falls. The waste and exhaust gas after the reaction will be discharged from the waste discharge opening (18) of the inner kiln cylinder, the waste discharge channel (21) of the kiln body and the exhaust gas pipe (19), respectively. At the same time, the induced draft fan will generate a negative pressure environment inside the rotary kiln through the exhaust gas pipe (19). During the incineration operation, the spray ventilation mechanism will continuously introduce air to maintain the reducing atmosphere inside the incineration system. Repeat the above steps to feed the material again for incineration.

8. The rotary combustible waste treatment method according to claim 7, characterized in that, It also includes in-furnace heat storage operations prior to incineration, which include the following steps: The burner (22) is started in advance and the heat storage body is put into the furnace for heat storage. After the heat storage body in the kiln cylinder (14) of the rotary kiln reaches the temperature standard required for combustion, the combustion operation is carried out.

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