Rotary combustible waste treatment device and treatment method

Abstract

The invention discloses a rotary combustible waste treatment device and treatment method, and belongs to the technical field of combustible waste treatment. The device comprises a feeding system and an incineration system connected with the feeding system. A solid panel, a net panel and a spraying ventilation mechanism in the feeding system are arranged in the feeding unit, the solid panel and the net panel are arranged up and down, and the spraying ventilation mechanism is arranged between the solid panel and the net panel; the solid panel, the net panel and the spraying ventilation mechanism are all connected with the control unit, and the control unit is used for controlling opening and closing of the solid panel, the net panel and the spraying ventilation mechanism. A combustor in the incineration system is arranged on an outer kiln body of the rotary kiln and connected with an inner kiln barrel of the rotary kiln, the inner kiln barrel of the rotary kiln is arranged in the outer kiln body of the rotary kiln, an inlet section of the inner kiln barrel of the rotary kiln is connected with the tail portion of the feeding system, and a waste discharging opening of the inner kiln barrel is formed in an outlet section of the inner kiln barrel of the rotary kiln. And the inner kiln cylinder waste discharge opening is communicated with a waste gas discharge pipeline and a kiln body waste discharge channel. According to the treatment device, the spraying of the reducing agent can be highly matched with the material feeding rule, so that the reducing atmosphere in the incineration system is maintained, the situation that the neutralizing level of the reducing agent in the incinerator is exceeded due to excessive material combustion is avoided, and toxic gas pollutants generated during combustible solid waste incineration can be purified.

Description

Technical Field

[0001] The invention belongs to the technical field of combustible waste treatment, and specifically relates to a rotary combustible waste treatment device and a treatment method. Background Art

[0002] Incineration is one of the many methods for treating combustible solid waste, but this method has serious environmental and health risks, because during the high-temperature thermal degradation process, combustible solid waste may release a variety of pollutants, which will pose a great threat to the ecological environment and human health. In addition, greenhouse gases such as carbon dioxide will be produced during the incineration of combustible solid waste.

[0003] When using incineration to treat combustible solid waste, it is necessary to control the amount of material used in one combustion to avoid burning too much material at one time, which would exceed the neutralization level of the reducing agent in the furnace and cause more serious environmental pollution.

[0004] In the current incineration treatment technology in the furnace, the material feeding presents a discrete characteristic, and the system uses a reducing agent solution for spraying to optimize the combustion process. However, there is a significant defect in the above technology: the spraying pattern of the reducing agent solution and the opening and closing timing of the feed valve lack effective coordination, resulting in the delivery rules of the reducing agent and the material not being able to be highly consistent, and it is difficult to achieve precise synchronization between the two, so it is difficult to maintain the reducing atmosphere inside the incineration system.

[0005] In view of this, how to ensure a high degree of consistency between the material feeding process and the reducing agent spraying strategy when implementing the incineration process in the furnace, and avoid more serious environmental pollution caused by burning too much material at one time and exceeding the neutralization level of the reducing agent in the furnace, has become a technical problem that needs to be solved urgently. In order to overcome this challenge, it is particularly urgent to develop an innovative rotary combustible waste treatment system. Summary of the invention

[0006] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a rotary combustible waste treatment device and treatment method. The system has the ability to accurately control the material input and reducing agent spraying timing, and can make the reducing agent spraying and material delivery rules highly matched to maintain the reducing atmosphere inside the incineration system, avoid exceeding the neutralization level of the reducing agent in the furnace due to excessive combustion of materials, and purify the toxic gas pollutants generated during the incineration of combustible solid waste.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: The present invention provides a rotary combustible waste treatment device, comprising a feeding system and an incineration system connected to the feeding system; The feeding system comprises a feeding unit, a solid panel, a mesh panel, a spray ventilation mechanism and a control unit; the solid panel, the mesh panel and the spray ventilation mechanism are arranged inside the feeding unit, the solid panel and the mesh panel are arranged up and down, and the spray ventilation mechanism is arranged between the solid panel and the mesh panel; the solid panel, the mesh panel and the spray ventilation mechanism are all connected to the control unit, and the control unit is used to control the opening and closing of the solid panel, the mesh panel and the spray ventilation mechanism; The incineration system comprises an outer kiln body of a rotary kiln, an inner kiln barrel of a rotary kiln, a waste discharge opening of the inner kiln barrel, an exhaust gas pipe, a waste discharge channel of the kiln body, and a burner; the burner is arranged on the outer kiln body of the rotary kiln and connected with the inner kiln barrel of the rotary kiln, the inner kiln barrel of the rotary kiln is arranged inside the outer kiln body of the rotary kiln, the inlet section of the inner kiln barrel of the rotary kiln is connected with the tail of the feeding system, the waste discharge opening of the inner kiln barrel is arranged at the outlet section of the inner kiln barrel of the rotary kiln, and the waste discharge opening of the inner kiln barrel is connected with the exhaust gas pipe and the waste discharge channel of the kiln body.

[0008] In one embodiment, the control unit includes a solid panel control unit, a mesh panel control unit, and a spray ventilation control unit; The real panel control unit is connected to the real panel, and the real panel control unit is used to control the opening and closing of the real panel; The mesh panel control unit is connected to the mesh panel, and the mesh panel control unit is used to control the opening and closing of the mesh panel; 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.

[0009] In one embodiment, the solid panel control unit and the mesh panel control unit are arranged outside the feeding unit.

[0010] In one embodiment, the spray ventilation mechanism includes a shell on the side of the feeding barrel, a reducing agent liquid tank and a double-pipeline spray pipeline; The outer shell of the feeding barrel body is arranged on the outside of the feeding unit, the reducing agent liquid tank is arranged in the outer shell of the feeding barrel body, the double-pipeline spray pipe is connected to the reducing agent liquid tank, and the spray outlet of the double-pipeline spray pipe is located between the solid panel flipping mechanism and the mesh panel flipping mechanism.

[0011] In one embodiment, the dual-pipeline spray pipeline includes a reducing agent spray pipeline and an air pipeline; The reducing agent spraying pipeline is communicated with the reducing agent liquid tank, and the air pipeline passes through the reducing agent liquid tank.

[0012] In one embodiment, the feeding unit includes a feeding funnel and a feeding barrel disposed below the feeding funnel, and an inlet section of the feeding funnel and an outlet section of the feeding barrel are connected to the outside.

[0013] In one embodiment, inner wall plates and ceramic linings are alternately arranged on the inner wall of the kiln tube in the rotary kiln.

[0014] In one embodiment, a rotation support structure between the inner kiln drum and the outer kiln body is provided on the outer wall of the inner kiln drum of the rotary kiln, and the rotation support structure between the inner kiln drum and the outer kiln body is located between the inner kiln drum of the rotary kiln and the outer kiln body of the rotary kiln.

[0015] The present invention also provides a rotary combustible waste treatment method, comprising the following steps: The material is transferred to the feeding unit, and the material falls on the top of 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 incineration system. The control unit opens the solid panel, and the material falls on the mesh panel. Then the control unit simultaneously opens the mesh panel and the spray ventilation mechanism, and the fallen material enters the incineration system. At the same time, air is continuously introduced and the reducing agent is sprayed. After a period of time, the reducing agent spraying ends, and the control unit closes the mesh panel and the spray ventilation mechanism to spray the reducing agent, and always maintains air introduction; When the material passes through the feeding unit and falls into the kiln barrel of the rotary kiln through the outer kiln body of the rotary kiln for incineration, the reducing agent enters at the same time, and the reducing agent will create a reducing atmosphere in the kiln barrel of the rotary kiln; the outer kiln body of the rotary kiln is lifted to a certain angle, and the kiln barrel of the rotary kiln rotates, and the material is carried to the high point of the inner wall and then falls down. In this process, the material will be continuously sprayed by the flame of the burner when it falls, so as to be incinerated; The waste and waste gas after the reaction will be discharged from the waste discharge opening of the inner kiln tube, the waste discharge channel of 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 the incineration operation, the spray ventilation mechanism will continuously introduce air to maintain the reducing atmosphere inside the incineration system. Repeat the above steps and transport the materials again for incineration operation.

[0016] In one embodiment, it also includes a furnace heat storage operation before the incineration operation, and the furnace heat storage operation includes the following steps: Start the burner in advance and put the heat storage body into the furnace to store heat. After the heat storage body in the kiln barrel of the rotary kiln reaches the temperature standard required for incineration, the incineration operation is carried out.

[0017] Compared with the prior art, the present invention has the following beneficial effects: The present invention provides a rotary combustible waste treatment device, which realizes precise control of material delivery timing and reducing agent spraying through a solid panel, a mesh panel and a feeding system of a spray ventilation mechanism. The upper and lower arrangements of the solid panel and the mesh panel and the connection with the control unit enable the material falling timing to be precisely controlled. The spray ventilation mechanism is arranged between the solid panel and the mesh panel and is connected to the control unit, ensuring that the spraying of the reducing agent solution and the falling of the material can be highly synchronized. The reducing agent is sprayed while the material falls, thereby effectively maintaining the reducing atmosphere inside the incineration system and preventing the neutralization level of the reducing agent in the furnace from exceeding due to excessive burning of the material.

[0018] Furthermore, the use of the mesh panel allows the spray ventilation mechanism to continuously let in air after the mesh panel is closed during the incineration process, thereby maintaining a negative pressure environment inside the feeding unit and the incineration system.

[0019] Furthermore, the spray ventilation mechanism includes a side shell of the feeding barrel, a reducing agent liquid tank and a double-pipeline spray pipeline. The double-pipeline spray pipeline allows the reducing agent spray pipeline and the air pipeline to work independently, which not only ensures accurate spraying of the reducing agent, but also ensures the continuous supply of air required during the incineration process.

[0020] Furthermore, the inner wall scrapers and ceramic linings alternately arranged on the inner wall of the kiln tube of the rotary kiln, as well as the rotating support structure on the outer wall, jointly ensure the stability and durability of the rotary kiln during the rotation process. The design also helps to evenly distribute and fully burn the materials.

[0021] The present invention also provides a rotary combustible waste treatment method, which controls the material transfer, the opening and closing of the solid panel and the mesh panel, and the ventilation of the spray ventilation mechanism and the reductant spraying timing through a control unit, thereby ensuring that the material falls on the mesh panel and the start and end of the reductant spraying can be closely coordinated, and the material delivery and the reductant spraying law are highly consistent. In addition, during this process, the spray ventilation mechanism continues to maintain the air injection state, thereby maintaining the negative pressure environment inside the feeding unit and the incineration system, reducing its temperature and preventing the gas in the incineration system from leaking at the material unit.

[0022] Furthermore, the heat storage operation in the furnace can solve the problem of rapid heat loss inside the furnace body due to the lack of pre-heat storage operation of heat storage materials and high overall energy consumption when the equipment is working. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of a feeding system of a rotary combustible waste treatment device provided by the present invention; Figure 2 This is a schematic diagram of the overall structure of the rotary combustible waste treatment device provided by the present invention; Figure 3 This is a schematic diagram of the structure of the kiln drum in the rotary kiln provided by the present invention; Among them: 1-feeding funnel; 2-solid panel control unit; 3-mesh panel control unit; 4-side outer shell of feeding barrel; 5-reducing agent liquid tank; 6-feeding barrel; 7-solid panel; 8-double-pipeline 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 barrel; 15-inner wall copying plate; 16-ceramic lining; 17-rotating support structure between inner kiln barrel and outer kiln body; 18-inner kiln barrel waste discharge opening; 19-exhaust gas pipe; 20-rotary kiln base; 21-kiln body waste discharge channel; 22-burner. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings: See also Figure 2 As 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 toxic gas pollutants generated during the incineration of combustible solid waste. It can solve the problem that the reducing atmosphere inside the incineration system cannot be well maintained when the existing combustible solid waste is treated by incineration method, and the problem that the atmosphere maintaining system cannot be well matched with the feeding law of the feeding system.

[0027] Among them, see Figure 1 As shown in the middle figures (a-c), the above-mentioned feeding system 12 is composed of a feeding unit, a solid panel 7, a mesh panel 9, a spray ventilation mechanism and a control unit.

[0028] See also Figure 2 As shown, the solid panel 7, the mesh panel 9 and the spray ventilation mechanism are inside the feeding unit, the solid panel 7 is located above the mesh panel 9, and the spray ventilation mechanism is between the solid panel 7 and the mesh panel 9; the above-mentioned solid panel 7, mesh panel 9, and spray ventilation mechanism are all connected to the control unit, and the control unit is used to control the opening and closing of the solid panel 7, mesh panel 9 and the spray ventilation mechanism.

[0029] 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.

[0030] During 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 for controlling the opening and closing of the solid panel 7; the mesh panel control unit 3 is connected to the mesh panel 9 for controlling the opening and closing of the mesh panel 9; the spray ventilation control unit is connected to the spray ventilation mechanism for controlling the opening and closing of the spray ventilation mechanism to achieve air entry and reducing agent spraying.

[0031] The feeding unit is composed of a feeding hopper 1 and a feeding barrel 6, and the feeding barrel 6 is arranged below the feeding hopper 1. In the feeding unit, only the inlet section of the feeding hopper 1 and the outlet section of the feeding barrel 6 are connected to the outside world, and the other parts of the device remain closed to the outside world.

[0032] The solid panel 7 is 20 cm below the inlet of the feeding barrel 6, and the double-net panel 9 is 20 cm below the pipeline spray pipe 8.

[0033] The solid panel control unit 2 and the mesh panel control unit 3 are arranged on the outside of the feeding unit, specifically on the outer side wall of the feeding barrel 6 .

[0034] The photoelectric sensor on the solid panel 7 can sense whether the material falls into the entrance section of the feeding barrel 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, and then transmits the signal in the form of an electrical signal to the solid panel control unit 2, the mesh panel control unit 3, and the spray ventilation control unit, and is connected to the spray ventilation control unit through electrical control, and the programs are operated with each other to jointly maintain the internal atmosphere level of the incineration system.

[0035] The spray ventilation mechanism comprises a shell 4 on the side of the feeding barrel, a reducing agent liquid tank 5 and a double-pipeline spray pipeline 8 consisting of a reducing agent spray pipeline 10 and an air pipeline 11 .

[0036] The double-pipeline spray pipeline 8 includes a reducing agent spray pipeline 10 and an air pipeline 11; the feeding barrel side shell 4 is arranged on the outer side of the feeding barrel 6, and the reducing agent liquid tank 5 is in the feeding barrel side shell 4. The reducing agent liquid tank 5 is connected to the reducing agent spray pipeline 10 in the double-pipeline spray pipeline 8, and the air pipeline 11 passes through the reducing agent liquid tank 5. The spray outlet of the double-pipeline spray pipeline 8 is located between the solid panel flipping mechanism and the mesh panel flipping mechanism, and the spray outlet is downward toward the mesh panel 9.

[0037] The air pipe 11 passes through the reducing agent liquid tank 5. At the same time, the air pipe 11 and the reducing agent spray pipe 10 share the double-pipe spray pipe 8, and spray the reducing agent and air into the incineration system 13 according to the program setting and the electrical signal fed back by the pneumatically flipped solid panel 7.

[0038] The air duct 11 keeps the air injected all the time, so as to maintain the negative pressure environment inside the feeding barrel 6 and the incineration system, reduce the temperature thereof and prevent the gas inside the incineration system from leaking at the feeding funnel 1 .

[0039] like Figure 2 As shown, the above-mentioned incineration system specifically includes a rotary kiln outer kiln body 13, a rotary kiln inner kiln barrel 14, an inner kiln barrel waste discharge opening 18, an exhaust gas exhaust pipe 19, a rotary kiln base 20, a kiln body waste discharge channel 21, and a burner 22; The outer kiln body 13 of the rotary kiln is arranged on the rotary kiln base 20, the burner 22 is arranged on the outer kiln body 13 of the rotary kiln, the inner kiln barrel 14 of the rotary kiln is connected to the burner 22, the inner kiln barrel 14 of the rotary kiln is arranged inside the outer kiln body 13 of the rotary kiln, the inlet section of the inner kiln barrel 14 of the rotary kiln is connected to the tail of the feeding system 12, the inner kiln barrel waste discharge opening 18 is arranged at the outlet section of the inner kiln barrel 14 of the rotary kiln, and the inner kiln barrel waste discharge opening 18 is connected to the waste gas discharge pipe 19 and the kiln body waste discharge channel 21.

[0040] Among them, see Figure 3 On the inner wall of the kiln drum 14 of the rotary kiln, inner wall shovels 15 and ceramic linings 16 are alternately arranged in sequence. On the outer wall of the kiln drum 14 of the rotary kiln, a rotating support structure 17 between the inner kiln drum and the outer kiln body is arranged. The rotating support structure 17 between the inner kiln drum and the outer kiln body is located between the inner kiln drum 14 of the rotary kiln and the outer kiln body 13 of the rotary kiln.

[0041] The inner wall of the kiln barrel 14 in the rotary kiln is composed of two parts: the inner wall copy plate 15 and the ceramic lining 16. The inner wall copy plate 15 is a customized ceramic casting. The two are assembled in an alternating manner and constitute the main structure of the kiln barrel 14 in the rotary kiln, which greatly improves the comprehensive performance of the rotating component in terms of high temperature resistance, corrosion resistance and vibration resistance, and provides basic safety guarantee and technical support for the incineration operation of materials.

[0042] Another aspect of the present invention provides a rotary combustible waste treatment method, comprising the following steps: S1: The material is transferred to the feeding unit, and the material falls on the top of the solid panel 7. The solid panel 7 and the mesh panel 9 are in a closed state. The control unit turns on the spray ventilation mechanism to introduce air to continuously generate a negative pressure environment inside the incineration system. The control unit turns on the solid panel 7, and the material falls on the mesh panel 9. Then the control unit turns on the mesh panel 9 and the spray ventilation mechanism at the same time, and the fallen material enters the incineration system. At the same time, air is continuously introduced and the reducing agent is sprayed. After a period of time, the reducing agent spraying ends, and the control unit turns off the reducing agent spraying of the mesh panel 9 and the spray ventilation mechanism, and always maintains air introduction; S2: The material passes through the feeding unit and falls into the kiln tube 14 of the rotary kiln through the outer kiln body 13 of the rotary kiln for incineration. At the same time, the reducing agent enters at the same time. The reducing agent will create a reducing atmosphere in the kiln tube 14 of the rotary kiln. The outer kiln body 13 of the rotary kiln is lifted to a certain angle, and the kiln tube 14 of the rotary kiln rotates, and the material is carried to the high point of the inner wall and then falls. In this process, the material is continuously sprayed by the flame of the burner 22 when falling, so as to be incinerated. S3: The waste and waste gas after the reaction are discharged from the waste discharge opening 18 of the inner kiln tube, the waste discharge channel 21 of the kiln body and the exhaust gas pipe 19 respectively. At the same time, the induced draft fan generates a negative pressure environment inside the rotary kiln through the exhaust gas pipe 19. During the incineration operation, the spray ventilation mechanism continuously introduces air to maintain the reducing atmosphere inside the incineration system. S4: Repeat the above steps and transport the materials again for incineration.

[0043] Before the above-mentioned incineration operation, there is also a heat storage operation in the furnace. More specifically, before the formal incineration operation, the burner 22 needs to be started and the heat storage body (quartz sand) needs to be put in to perform the heat storage operation in the furnace; after the heat storage body (quartz sand) in the kiln barrel 14 of the rotary kiln reaches the required temperature standard for incineration, the next step of material incineration operation can be carried out according to the operating procedures. The above-mentioned pre-heat storage operation is used to solve the problem that the heat loss in the furnace body is fast due to the lack of pre-heat storage operation of the heat storage body material, and the overall energy consumption of the equipment is high when working.

[0044] When the above-mentioned heat storage operation in the furnace is completed, the reducing agent, air and materials will enter the incineration system for reaction according to the sequence set by the program. The waste materials and waste gas after the reaction will be discharged from the waste discharge opening 18 of the inner kiln tube, the waste discharge channel 21 of 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 the induced draft fan.

[0045] Example 1 This embodiment provides a rotary combustible waste treatment device, such as Figure 1As shown, it includes: a feeding unit, the side of the feeding barrel 6 on which is connected to the feeding barrel side shell 4 in the furnace atmosphere control unit, and at the same time, the relevant mechanism of the pneumatic turning unit is arranged at a certain distance in the upper and lower directions of the feeding barrel 6. The whole equipment processes the scrapped energetic materials from top to bottom until they are sent to the incineration system.

[0046] In the feeding unit, the material is fed into the feeding hopper 1 and falls into the head of the feeding barrel 6 and the upper part of the solid panel 7. After the previous batch of materials is processed, the solid panel control unit 2 controls the solid panel 7 to open while the mesh panel 9 remains closed, so that the material falls into the middle section of the feeding barrel 6, that is, the upper part of the mesh panel 9. At the same time, when there is no material on the solid panel 7, the solid panel control unit 2 controls it to close. After the equipment waits for 3 seconds, the mesh panel control unit controls the mesh panel 9 to open, and at the same time, the spray ventilation control unit controls the reducing agent liquid tank 5 to open, and keeps the reducing agent liquid tank 5 and the mesh panel 9 open for 10 seconds, and then the mesh panel 9 is closed. During this process, the air duct 11 will continue to work. Finally, the material falls into the incineration system for incineration and maintenance of the reducing atmosphere. At the same time, the entire equipment waits for the next material delivery, so that while realizing discrete feeding, it can also better maintain the reducing atmosphere in the incineration system.

[0047] Example 2 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 is composed of a feeding unit, a pneumatically flippable solid panel 7, a mesh panel 9, a spray ventilation mechanism and a control unit.

[0048] 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 program actions between various units, the reducing atmosphere inside the incineration system is maintained within a reasonable range.

[0049] The above-mentioned feeding unit is composed of a feeding funnel 1 and a feeding barrel 6; the unit is mainly used to transport combustible solid waste, reducing agent liquid and air to the inside of the incineration system.

[0050] 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. The former is 20 cm below the inlet of the feeding barrel 6, and the latter is 20 cm below the double-pipeline spray pipe 8.

[0051] The coordination of the pneumatically flipped solid panel 7 and mesh panel 9 is also set according to the processing conditions of the previous batch of materials and the intermittent working characteristics of the reducing agent liquid tank 5 .

[0052] The spray ventilation mechanism is composed of a shell 4 on the side of the feeding barrel, a reducing agent liquid tank 5, a reducing agent spray pipeline 10, an air pipeline 11 and a double-pipeline spray pipeline 8.

[0053] The incineration system consists of Figure 2 The rotary kiln is composed of an outer kiln body 13, an inner kiln barrel 14, an inner wall shovel 15, a ceramic lining 16, a rotating support structure 17 between the inner kiln barrel and the outer kiln body, an inner kiln barrel waste discharge opening 18, an exhaust gas pipe 19, a rotary kiln base 20, a kiln body waste discharge channel 21, and a burner 22.

[0054] The working process of the feeding unit, the pneumatically flipped solid panel 7, the mesh panel 9, and the spray ventilation mechanism in the above-mentioned feeding system is as follows: Feeding unit, when the material falls into the feeding hopper 1 and reaches the solid panel 7, the solid panel 7 and the mesh panel 9 are both in a closed state, and the air duct 11 is still working normally, the purpose is to continuously generate a negative pressure environment inside the incineration system and prevent the toxic pollutant gas from overflowing, while also having the cooling effect of the feeding hopper 1 and the feeding barrel 6. When the last 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 drop the material onto the mesh panel 9. After waiting for 3 seconds, with the start-up 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.

[0055] The program actions of the pneumatically flipped solid panel 7 and mesh panel 9 are set according to the position of the combustible solid waste relative to the solid panel 7 and mesh panel 9. For example, when the material to be processed is not delivered to the feeding system, the solid panel 7 remains closed, and the solid panel 7 is opened until the previous batch of materials is processed, at which time the solid panel 7 is opened to allow the material above to fall down. During this process, the mesh panel 9 remains closed, and the material will fall above the mesh panel 9. When the reducing agent liquid tank 5 is ready to spray the reducing agent, the mesh panel 9 is opened to allow the material to fall into the incineration system for incineration.

[0056] The spray ventilation mechanism and the spray ventilation control unit, the reducing agent liquid tank 5 is mainly responsible for when the pneumatically flipped mesh panel 9 is fully opened, the spray port of the reducing agent spray pipe 10 connected to the reducing agent liquid tank 5 is started, and falls into the incineration system together with the combustible solid waste that has previously fallen on the mesh panel 9. While keeping the mesh panel 9 open for 10 seconds, the reducing agent liquid tank 5 also sprays for 10 seconds. After the 10-second period, the mesh panel 9 is closed, and the reducing agent liquid tank 5 is closed, while the continuous spraying work of the air pipe 11 is still maintained.

[0057] The working process of the above incineration system is as follows: S1: In-furnace heat storage operation: When the system is preheating, you can first adjust the parameters of the incineration system and keep both valves of the feeding system open, and then add the heat storage material that meets the test through the feeding system. After the preheating preparation parameters are set, the incineration system can be gradually preheated until the required material incineration temperature is reached.

[0058] S2: Incineration operation: After the system is preheated, when the incineration operation is performed, after the material passes through the feeding system 12, it will reach the inside of the incineration system. At this time, the kiln barrel 14 in the rotary kiln will drive the inner wall lifting plate 15 installed on its inner wall to rotate, and the material will be carried to the high point of the inner wall and then fall down. In this process, the material will be continuously sprayed by the flame of the burner 22 when it falls, so as to perform the incineration operation.

[0059] At the same time, in the actual operation process, in order to ensure that the materials in the kiln drum 14 of the rotary kiln move toward the waste discharge opening 18 of the inner kiln drum, the entire rotary kiln needs to be lifted to a certain angle through the hydraulic system to facilitate the movement of the materials.

[0060] When the material enters the incineration system, the reducing agent will also enter as mentioned above. The reducing agent will create a reducing atmosphere in the kiln drum 14 of the rotary kiln to suppress the large amount of waste gas generated. After the material and the reducing agent are incinerated in the kiln drum 14 of the rotary kiln, the remaining waste and the generated waste gas will be discharged from the waste discharge channel 21 of the kiln body and the waste gas discharge pipe 19 respectively under the action of gravity and the negative pressure environment in the kiln.

[0061] In summary, in the present invention, the pneumatic flip control unit and the spray ventilation mechanism control unit for controlling the atmosphere in the furnace are interconnected through an electrical control system to achieve mutual program actions, thereby achieving the ability to maintain a reducing atmosphere in the incineration system while feeding discretely.

[0062] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A rotary combustible waste treatment device, characterized in that: It comprises a feeding system (12) and an incineration system connected to the feeding system (12), wherein the feeding system (12) comprises 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 up and down, 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 a control unit, and the control unit 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 comprises an outer kiln body (13) of a rotary kiln, an inner kiln drum (14) of a rotary kiln, an inner kiln drum waste discharge opening (18), an exhaust gas discharge pipe (19), a kiln body waste discharge channel (21), and a burner (22); The burner (22) is arranged on the outer kiln body (13) of the rotary kiln and connected to the inner kiln barrel (14) of the rotary kiln. The inner kiln barrel (14) of the rotary kiln is arranged inside the outer kiln body (13) of the rotary kiln. The inlet section of the inner kiln barrel (14) of the rotary kiln is connected to the rear end of the feeding system (12). The inner kiln barrel waste discharge opening (18) is arranged at the outlet section of the inner kiln barrel (14) of the rotary kiln. The inner kiln barrel waste discharge opening (18) is connected to the waste gas discharge pipe (19) and the kiln body waste discharge channel (21).

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

4. The rotary combustible waste treatment device according to claim 1, characterized in that: The spray ventilation mechanism comprises a feeding barrel body side shell (4), a reducing agent liquid tank (5) and a double-pipeline spray pipeline (8); The feed barrel body side shell (4) is arranged on the outside of the feed unit, the reducing agent liquid tank (5) is arranged in the feed barrel body side shell (4), the double-pipeline spray pipe (8) is connected to the reducing agent liquid tank (5), and the spray outlet of the double-pipeline spray pipe (8) is located between the solid panel turning mechanism and the mesh panel turning mechanism.

5. The rotary combustible waste treatment device according to claim 4, characterized in that: The double-pipeline spray pipeline (8) includes a reducing agent spray pipeline (10) and an air pipeline (11); The reducing agent spraying pipeline (10) is in communication with the reducing agent liquid tank (5), and the air pipeline (11) passes through the reducing agent liquid tank (5).

6. The rotary combustible waste treatment device according to claim 1, characterized in that: The feeding unit comprises a feeding hopper (1) and a feeding barrel (6) arranged below the feeding hopper (1); an inlet section of the feeding hopper (1) and an outlet section of the feeding barrel (6) are connected to the outside.

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

8. The rotary combustible waste treatment device according to claim 1, characterized in that: A rotation support structure (17) between the inner kiln barrel and the outer kiln body is provided on the outer wall of the inner kiln barrel (14) of the rotary kiln. The rotation support structure (17) between the inner kiln barrel and the outer kiln body is located between the inner kiln barrel (14) of the rotary kiln and the outer kiln body (13) of the rotary kiln.

9. A rotary combustible waste treatment method, characterized in that: The following steps are involved: The material is transferred into the feeding unit, and the material falls onto the top of the solid panel (7). The solid panel (7) and the mesh panel (9) are in a closed state. The control unit turns on the spray ventilation mechanism to introduce air, so as to continuously generate a negative pressure environment inside the incineration system. The control unit turns on the solid panel (7), and the material falls onto the mesh panel (9). Then, the control unit turns on the mesh panel (9) and the spray ventilation mechanism at the same time, and the fallen material enters the incineration system. At the same time, air is continuously introduced and the reducing agent is sprayed. After a period of time, the spraying of the reducing agent ends, and the control unit turns off the spraying of the reducing agent by the mesh panel (9) and the spray ventilation mechanism, and always maintains air introduction; The material passes through the feeding unit and falls into the kiln tube (14) of the rotary kiln through the outer kiln body (13) of the rotary kiln for incineration. At the same time, the reducing agent enters the kiln tube (14) of the rotary kiln at the same time. The reducing agent creates a reducing atmosphere in the kiln tube (14) of the rotary kiln. The outer kiln body (13) of the rotary kiln is lifted to a certain angle, and the kiln tube (14) of the rotary kiln rotates, so that the material is carried to the high point of the inner wall and then falls. In this process, the material is continuously sprayed by the flame of the burner (22) when falling, so as to be incinerated. The waste materials and waste gas after the reaction are discharged from the waste material discharge opening (18) of the inner kiln tube, the waste material discharge channel (21) of the kiln body and the waste gas discharge pipe (19) respectively. At the same time, the induced draft fan generates a negative pressure environment inside the rotary kiln through the waste gas discharge pipe (19). During the incineration operation, the spray ventilation mechanism continuously introduces air to maintain the reducing atmosphere inside the incineration system. Repeat the above steps and transport the materials again for incineration operation.

10. The rotary combustible waste treatment method according to claim 9, characterized in that: It also includes a furnace heat storage operation before the incineration operation, and the furnace heat storage operation includes the following steps: The burner (22) is started in advance and a heat storage body is put into the furnace to store heat. After the heat storage body in the kiln barrel (14) of the rotary kiln reaches the temperature standard required for incineration, the incineration operation is carried out.

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