A waste incineration plant

Abstract

The application discloses a waste treatment system for incineration plant, which comprises a waste stacking mechanism, a feeding mechanism and an incinerator. The waste stacking mechanism comprises a waste chamber, a lifting compartment and a lifting driving element. The feeding mechanism comprises a screw conveying element and a translation driving element. The screw conveying element comprises a conveying shell, a shaftless screw and a rotation driving element. The conveying shell has a conveying groove. A discharge port is arranged on the lower end surface of the conveying shell and is communicated with the inlet of the incinerator. The translation driving element is used for driving the conveying shell to be inserted into the lower end of the storage cavity through the discharge port. The beneficial effect of the application is that the compartment is lifted upward by the lifting driving element, so that the feeding port of the next storage cavity is communicated with the discharge port, and the waste can be sequentially stacked into different storage cavities from top to bottom, so that the waste can be sequentially stacked in different storage cavities from top to bottom according to the order of feeding time, and the mixed situation of raw and cooked materials can be avoided, and the stability of the working condition of the waste incinerator can be improved.

Description

Technical Field

[0001] This invention relates to the field of waste incineration power generation technology, and in particular to a waste treatment system for incineration plants. Background Technology

[0002] Waste-to-energy incineration (as per the Chinese utility model patent application number CN201922496604.0) is considered the best way to dispose of municipal solid waste in a "reduced, harmless, and resource-efficient" manner, attracting significant national attention. The process is as follows: Municipal solid waste is transported to the incineration plant by specialized vehicles, then sorted to remove metals and non-combustible materials. After being weighed on a weighbridge, it is unloaded into a waste pit, where it undergoes natural fermentation for 2-5 days. After draining the water, the waste is fed into the incinerator's feed hopper via a grab bucket at the top of the pit, and then enters the incinerator for combustion via a chute. The waste undergoes a drying, combustion, and burnout process in the incinerator, transforming putrefactive organic matter into inorganic matter. The heat generated during combustion can be used to generate electricity.

[0003] Existing waste incineration systems have the following drawbacks:

[0004] (1) After the sorted garbage is put into the garbage pool, it is necessary to manually operate the garbage grab bucket to re-stack the garbage, transfer the garbage that has been stacked for a sufficient number of days to the clinker stacking area, and then transfer the garbage that has just been put into the raw material stacking area. At the same time, it is also necessary to manually operate the garbage grab bucket to send the garbage into the incinerator feed hopper. The workload is large and the degree of automation is low.

[0005] (2) The boundary between the raw material stacking area and the clinker stacking area is not obvious. The raw material stacking area and the clinker stacking area often slide relative to each other, causing raw and clinker materials to mix. This reduces the number of days for the raw materials to dehydrate and ferment in the waste pool. At the same time, the mixing of raw and clinker materials leads to a decrease in the calorific value of the waste entering the furnace, which affects the stability of the quality of the waste entering the furnace, resulting in unstable operation of the waste incinerator and affecting power generation and environmental protection benefits. Summary of the Invention

[0006] In view of this, it is necessary to provide a waste treatment system for incineration plants to solve the technical problems of existing waste incineration systems, which require manual transfer of waste in waste pits and manual feeding, resulting in low efficiency and easy mixing of raw and cooked materials, affecting power generation and environmental benefits.

[0007] To achieve the above objectives, the present invention provides a waste treatment system for an incineration plant, including a waste stacking mechanism, a feeding mechanism, and an incinerator;

[0008] The waste stacking mechanism includes a waste chamber, a lifting compartment, and a lifting drive. The waste chamber has an upwardly extending receiving cavity, and the side wall of the waste chamber has a discharge port for waste to fall. The lifting compartment is disposed in the receiving cavity. The lifting compartment includes a compartment body and several partitions. The compartment body has a storage cavity. The partitions are evenly arranged vertically in the storage cavity to divide the storage cavity into several stacking cavities distributed from top to bottom. The side wall of the compartment body has several drain ports and feed ports that are connected to each of the storage cavities. The side wall of the compartment body has several discharge ports that are connected to each of the storage cavities. Each discharge port can be opened or closed. The lifting drive is connected to the compartment body and is used to drive the compartment body to move up and down. When the compartment body moves up and down, each feed port is connected to the discharge port in sequence.

[0009] The feeding mechanism includes a screw conveyor and a translation drive. The screw conveyor includes a conveying housing, a shaftless screw, and a rotation drive. The conveying housing has a conveying groove extending in a horizontal direction. A discharge port communicating with the inlet of the incinerator is opened on the lower end surface of the conveying housing. The shaftless screw is rotatably disposed in the conveying groove. The rotation drive is used to drive the shaftless screw to rotate. The translation drive is connected to the conveying housing and is used to drive the conveying housing to be inserted into the lower end of the storage cavity through the discharge port.

[0010] In some embodiments, a liquid storage tank is formed at the lower end of the waste chamber, and the liquid storage tank is connected to a drain pipe.

[0011] In some embodiments, the waste treatment system of the incineration plant further includes a material discharge mechanism, which includes a material discharge platform and an inclined plate. The material discharge platform is disposed to the side of the discharge port, and the inclined plate is inclined. The upper end of the inclined plate is connected to the end of the material discharge platform, and the lower end of the inclined plate is connected to the lower end of the discharge port.

[0012] In some embodiments, a telescopic groove extending along the length direction is formed in the inclined plate, and the material pouring mechanism further includes a telescopic plate and a telescopic drive member. The telescopic plate is partially slidably disposed in the telescopic groove, and the telescopic drive member is connected to the telescopic plate and is used to drive the telescopic plate to move so that the end of the telescopic plate away from the telescopic groove is inserted into the feed port.

[0013] In some embodiments, the material discharge mechanism further includes a material discharge valve plate and a valve plate drive member. The material discharge valve plate is movably disposed outside the discharge port. The valve plate drive member is connected to the material discharge valve plate and is used to drive the material discharge valve plate to move so that the material discharge valve plate covers the discharge port or separates from the discharge port.

[0014] In some embodiments, a filter plate is fixed at the lower end of each of the storage cavities, and a percolation cavity is formed between the filter plate and the partition below, and the drain port is connected to the corresponding percolation cavity.

[0015] In some embodiments, the waste stacking mechanism further includes a plurality of discharge valve plates and discharge driving components. The discharge valve plates are disposed on the outer edge of the corresponding discharge ports. The discharge driving components are connected to the corresponding discharge valve plates and are used to drive the discharge valve plates to move so that the discharge valve plates cover the discharge ports or separate from the discharge ports.

[0016] In some embodiments, the waste treatment system of the incineration plant further includes a desulfurization tank, the inlet of which is connected to the flue gas outlet of the incinerator.

[0017] In some embodiments, the waste treatment system of the incineration plant further includes a dust collector, the inlet of which is connected to the outlet of the desulfurization tank.

[0018] In some embodiments, the dust collector is a bag filter.

[0019] Compared with the prior art, the beneficial effects of the technical solution proposed in this invention are as follows: The lifting drive component moves the chamber upwards, connecting the inlet and outlet of the next storage chamber. This process is repeated sequentially, allowing waste to be piled into different storage chambers from top to bottom. This ensures that waste is placed in the storage chambers according to the order of feeding time, eliminating the need for manual waste transfer and preventing mixing of raw and cooked materials, thus improving the stability of the waste incinerator's operation. Simultaneously, the translation drive component pushes the conveying shell through the outlet into the lower end of the storage chamber, while the rotation drive component drives the shaftless screw to rotate, thus transporting the waste in the storage chamber into the conveying shell and dropping it from the discharge port into the incinerator for combustion and power generation. This significantly improves feeding efficiency compared to existing grab-bucket feeding methods. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the waste treatment system for incineration plants provided by the present invention;

[0021] Figure 2 yes Figure 1 A schematic diagram of the structure of the waste disposal facility in the middle;

[0022] Figure 3 yes Figure 1 A schematic diagram of the material feeding mechanism in the middle;

[0023] Figure 4 yes Figure 2 A schematic diagram of the lifting car structure;

[0024] Figure 5 yes Figure 4 A magnified view of a portion of region A in the middle;

[0025] Figure 6 yes Figure 4 A magnified view of a portion of region B in the middle;

[0026] Figure 7 yes Figure 2 A schematic diagram of the feeding mechanism in the middle;

[0027] Figure 8 yes Figure 7 Sectional view of the middle section CC;

[0028] Figure 9 yes Figure 7 A schematic diagram of the structure of the spiral conveyor component in the diagram;

[0029] In the diagram: 1-Garbage stacking mechanism, 11-Garbage chamber, 111-Unloading port, 12-Lifting box, 121-Box body, 1211-Drainage port, 1212-Inlet, 1213-Outlet, 122-Baffle plate, 123-Filter plate, 124-Percolation chamber, 13-Lifting drive component, 14-Drainage pipe, 15-Outlet valve plate, 16-Outlet drive component, 2-Feeding mechanism, 21-Screw 211-Conveying shell, 2111-Discharge port, 212-Shaftless screw, 213-Rotation drive, 22-Translation drive, 3-Incinerator, 4-Discharging mechanism, 41-Discharging platform, 42-Inclined plate, 421-Telescopic groove, 43-Telescopic plate, 44-Telescopic drive, 45-Discharging valve plate, 46-Valve plate drive, 5-Desulfurization tank, 6-Dust collector, 7-Chimney. Detailed Implementation

[0030] Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0031] Please refer to Figures 1-9 The present invention provides a waste treatment system for an incineration plant, including a waste stacking mechanism 1, a feeding mechanism 2, and an incinerator 3.

[0032] The waste stacking mechanism 1 includes a waste chamber 11, a lifting box 12, and a lifting drive component 13. The waste chamber 11 has an upwardly extending receiving cavity, and a discharge port 111 for waste to fall is provided on the side wall of the waste chamber 11. The lifting box 12 is disposed in the receiving cavity. The lifting box 12 includes a box body 121 and several partitions 122. The box body 121 has a storage cavity. Each of the partitions 122 is evenly arranged vertically in the storage cavity to divide the storage cavity into several stacking sections distributed from top to bottom. The compartment 121 has several drain ports 1211 and feed ports 1212 on its side walls, each communicating with one of the storage cavities. It also has several discharge ports 1213 on its side walls, each communicating with one of the storage cavities. Each discharge port 1213 can be opened or closed. The lifting drive component 13 is connected to the compartment 121 and is used to move the compartment 121 up and down. When the compartment 121 moves up and down, each feed port 1212 connects sequentially to the discharge port 111. In this embodiment, the lifting drive component 13 is a crane connected to the compartment 121 via a lifting rope.

[0033] The feeding mechanism 2 includes a screw conveyor 21 and a translation drive 22. The screw conveyor 21 includes a conveying housing 211, a shaftless screw 212, and a rotation drive 213. The conveying housing 211 has a conveying groove extending in a horizontal direction. The upper end face of the conveying groove is open. The lower end face of the conveying housing 211 has a discharge port 2111 that communicates with the inlet of the incinerator 3. The shaftless screw 212 is rotatably disposed in the conveying groove. The rotation drive 213 is used to drive the shaftless screw 212 to rotate. The translation drive 22 is connected to the conveying housing 211 and is used to drive the conveying housing 211 to be inserted into the lower end of the storage cavity through the discharge port 1213.

[0034] In operation, the garbage truck transports garbage to the waste plant and dumps it into the unloading port 111. The garbage then enters the inlet 1212 of a storage compartment within the container 121. When the storage compartment is full, the lifting drive 13 moves the container 121 upwards, connecting the inlet 1212 of the next storage compartment to the unloading port 111. This process is repeated sequentially, allowing garbage to be piled up from top to bottom into different storage compartments. Then, the garbage in the upper storage compartment naturally... After fermentation is complete, the lifting drive 13 moves the compartment 121 upward so that the discharge port 1213 of the storage chamber is horizontally aligned with the screw conveyor 21. Then, the discharge port 1213 is opened, and the translation drive 22 pushes the conveying housing 211 through the discharge port 1213 to insert into the lower end of the storage chamber. The rotation drive 213 drives the shaftless screw 212 to rotate, so that the waste in the storage chamber is transported into the conveying housing 211 and falls from the discharge port 2111 into the incinerator 3 for combustion and power generation.

[0035] In this invention, the lifting drive 13 moves the compartment 121 upward, so that the feed inlet 1212 of the next storage chamber is connected to the discharge port 111. This process is repeated sequentially, so that the garbage can be stacked into different storage chambers from top to bottom. This allows the garbage to be stacked into different storage chambers from top to bottom according to the order of feeding time, eliminating the need for manual garbage transfer and preventing the mixing of raw and cooked materials, thus improving the stability of the garbage incinerator's operation. At the same time, the translation drive 22 pushes the conveying shell 211 to be inserted into the lower end of the storage chamber through the discharge port 1213. The rotation drive 213 drives the shaftless screw 212 to rotate, so that the garbage in the storage chamber is transported into the conveying shell 211 and falls from the discharge port 2111 into the incinerator 3 for combustion and power generation. This improves the feeding efficiency compared to the existing grab bucket material handling method.

[0036] To facilitate the collection of landfill leachate, please refer to... Figure 1 and Figure 2 In a preferred embodiment, a liquid storage tank 112 is formed at the lower end of the garbage chamber 11. The liquid storage tank 112 is connected to a drain pipe 14. During use, the leachate produced by the natural fermentation of garbage in each storage chamber is discharged through the drain port 1211 and falls into the liquid storage tank 112 below. It is then transported to the landfill leachate treatment device for harmless treatment through the drain pipe 14. To prevent the leachate discharged from the drain port 1211 from splashing everywhere and affecting the environment, in this embodiment, each drain port 1211 is connected to a flexible hose, the lower end of which extends to the inner bottom surface of the garbage chamber 11.

[0037] For easier dumping of waste into discharge port 111, please refer to... Figures 1-3In a preferred embodiment, the waste treatment system of the incineration plant further includes a material dumping mechanism 4, which includes a material dumping platform 41 and an inclined plate 42. The material dumping platform 41 is disposed on the side of the discharge port 111, and the inclined plate 42 is inclined. The upper end of the inclined plate 42 is connected to the end of the material dumping platform 41, and the lower end of the inclined plate 42 is connected to the lower end of the discharge port 111.

[0038] To prevent garbage from falling between the outer wall of the elevator box 12 and the inner wall of the garbage chamber 11, please refer to... Figures 1-3 In a preferred embodiment, a telescopic groove 421 extending along the length direction is provided in the inclined plate 42. The unloading mechanism 4 also includes a telescopic plate 43 and a telescopic drive member 44. The telescopic plate 43 is partially slidably disposed in the telescopic groove 421. The telescopic drive member 44 is connected to the telescopic plate 43 and is used to drive the telescopic plate 43 to move so that the end of the telescopic plate 43 away from the telescopic groove 421 is inserted into the feed inlet 1212. In use, when it is necessary to unload garbage, the telescopic drive member 44 drives the telescopic plate 43 to insert into the feed inlet 1212. After unloading is completed, the telescopic plate 43 is retracted into the telescopic groove 421 to prevent it from blocking the vertical movement of the lifting box 12.

[0039] To facilitate automatic opening or closing of the discharge port 111, please refer to... Figures 1-3 In a preferred embodiment, the material discharge mechanism 4 further includes a material discharge valve plate 45 and a valve plate drive member 46. The material discharge valve plate 45 is movably disposed outside the discharge port 111. The valve plate drive member 46 is connected to the material discharge valve plate 45 and is used to drive the material discharge valve plate 45 to move so that the material discharge valve plate 45 covers the discharge port 111 or separates from the discharge port 111. In this embodiment, the valve plate drive member 46 is a valve plate drive cylinder.

[0040] For easier drainage of landfill leachate, please refer to... Figure 4 and Figure 5 In a preferred embodiment, a filter plate 123 is fixed at the lower end of each of the storage cavities, and a percolation cavity 124 is formed between the filter plate 123 and the partition plate 122 below, and the drain port 1211 is connected to the corresponding percolation cavity 124.

[0041] To implement the opening and closing of discharge port 1213, please refer to... Figure 4 and Figure 6In a preferred embodiment, the waste stacking mechanism 1 further includes a plurality of discharge valve plates 15 and discharge driving components 16. The discharge valve plates 15 are disposed on the outer edge of the corresponding discharge ports 1213. The discharge driving components 16 are connected to the corresponding discharge valve plates 15 and are used to drive the discharge valve plates 15 to move so that the discharge valve plates 15 cover the discharge ports 1213 or separate from the discharge ports 1213. In this embodiment, the discharge driving component 16 is a discharge driving cylinder.

[0042] To remove sulfur dioxide from combustion exhaust, please refer to... Figure 1 In a preferred embodiment, the waste treatment system of the incineration plant further includes a desulfurization tank 5. The inlet of the desulfurization tank 5 is connected to the flue gas outlet of the incinerator 3. In this embodiment, the desulfurization tank 5 is used to spray lime slurry, which reacts with sulfur dioxide in the incineration exhaust gas to remove sulfur dioxide from the incineration exhaust gas.

[0043] To remove dust from incineration exhaust, please refer to... Figure 1 In a preferred embodiment, the waste treatment system of the incineration plant further includes a dust collector 6, the inlet of which is connected to the outlet of the desulfurization tank 5. In a preferred embodiment, the dust collector 6 is a bag filter. The outlet of the dust collector 6 is connected to the chimney 7.

[0044] To better understand this invention, the following is combined with... Figures 1-9 The working process of the waste treatment system for incineration plants provided by this invention will be described in detail below: In use, a waste transport truck delivers waste to the waste plant and pours it into the unloading port 111. The waste enters the inlet 1212 of a storage chamber inside the container 121 through the unloading port 111. When the storage chamber is full of waste, the lifting drive 13 moves the container 121 upwards, so that the inlet 1212 of the next storage chamber connects with the unloading port 111. This process is repeated sequentially, allowing waste to be piled up from top to bottom into different storage chambers. Then… After the waste in the upper storage chamber has finished fermenting naturally, the lifting drive 13 moves the chamber 121 upward so that the discharge port 1213 of the storage chamber is horizontally aligned with the screw conveyor 21. Then the discharge port 1213 is opened, and the translation drive 22 pushes the conveying housing 211 to be inserted into the lower end of the storage chamber through the discharge port 1213. The rotation drive 213 drives the shaftless screw 212 to rotate, so that the waste in the storage chamber is transported into the conveying housing 211 and falls from the discharge port 2111 into the incinerator 3 for combustion and power generation.

[0045] To prevent waste in the corners of the storage chamber from failing to reach the incinerator and resulting in residue in the warehouse, please refer to... Figure 8In a preferred embodiment, each storage cavity has three stacking grooves formed on its lower end face. The sidewalls of the stacking grooves are inward slopes, which allow the material above to slide into them. There are three screw conveyors 21, each of which is disposed in its corresponding stacking groove, thereby preventing the waste in the corners of the storage cavity from not being conveyed to the incinerator.

[0046] In this invention, the lifting drive 13 moves the compartment 121 upward, so that the feed inlet 1212 of the next storage chamber is connected to the discharge port 111. This process is repeated sequentially, so that the garbage can be stacked into different storage chambers from top to bottom. This allows the garbage to be stacked into different storage chambers from top to bottom according to the order of feeding time, eliminating the need for manual garbage transfer and preventing the mixing of raw and cooked materials, thus improving the stability of the garbage incinerator's operation. At the same time, the translation drive 22 pushes the conveying shell 211 to be inserted into the lower end of the storage chamber through the discharge port 1213. The rotation drive 213 drives the shaftless screw 212 to rotate, so that the garbage in the storage chamber is transported into the conveying shell 211 and falls from the discharge port 2111 into the incinerator 3 for combustion and power generation. This improves the feeding efficiency compared to the existing grab bucket material handling method.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A waste treatment system for an incineration plant, characterized in that, This includes waste disposal facilities, feeding mechanisms, and incinerators; The waste stacking mechanism includes a waste chamber, a lifting compartment, and a lifting drive. The waste chamber has an upwardly extending receiving cavity, and the side wall of the waste chamber has a discharge port for waste to fall. The lifting compartment is disposed in the receiving cavity. The lifting compartment includes a compartment body and several partitions. The compartment body has a storage cavity. The partitions are evenly arranged vertically in the storage cavity to divide the storage cavity into several stacking cavities distributed from top to bottom. The side wall of the compartment body has several drain ports and feed ports that are connected to each of the storage cavities. The side wall of the compartment body has several discharge ports that are connected to each of the storage cavities. Each discharge port can be opened or closed. The lifting drive is connected to the compartment body and is used to drive the compartment body to move up and down. When the compartment body moves up and down, each feed port is connected to the discharge port in sequence. The feeding mechanism includes a screw conveyor and a translation drive. The screw conveyor includes a conveying housing, a shaftless screw, and a rotation drive. The conveying housing has a conveying groove extending in a horizontal direction. A discharge port communicating with the inlet of the incinerator is opened on the lower end face of the conveying housing. The shaftless screw is rotatably disposed in the conveying groove. The rotation drive is used to drive the shaftless screw to rotate. The translation drive is connected to the conveying housing and is used to drive the conveying housing to be inserted into the lower end of the storage cavity through the discharge port. A liquid storage tank is formed at the lower end of the waste chamber, and the liquid storage tank is connected to a drain pipe; Each of the storage cavities has a filter plate fixed at its lower end, and a percolation cavity is formed between the filter plate and the partition below it. The drain port is connected to the corresponding percolation cavity.

2. The waste treatment system for incineration plants according to claim 1, characterized in that, It also includes a material pouring mechanism, which includes a material pouring platform and an inclined plate. The material pouring platform is located to the side of the discharge port, and the inclined plate is inclined. The upper end of the inclined plate is connected to the end of the material pouring platform, and the lower end of the inclined plate is connected to the lower end of the discharge port.

3. The waste treatment system for incineration plants according to claim 2, characterized in that, The inclined plate has a telescopic groove extending along its length. The material pouring mechanism also includes a telescopic plate and a telescopic drive component. The telescopic plate is partially slidably disposed in the telescopic groove. The telescopic drive component is connected to the telescopic plate and is used to drive the telescopic plate to move so that the end of the telescopic plate away from the telescopic groove is inserted into the feed port.

4. The waste treatment system for incineration plants according to claim 2, characterized in that, The material discharge mechanism also includes a material discharge valve plate and a valve plate drive component. The material discharge valve plate is movably disposed outside the discharge port. The valve plate drive component is connected to the material discharge valve plate and is used to drive the material discharge valve plate to move so that the material discharge valve plate covers the discharge port or separates from the discharge port.

5. The waste treatment system for incineration plants according to claim 1, characterized in that, The waste stacking mechanism also includes several discharge valve plates and discharge driving components. The discharge valve plates are disposed on the outer edge of the corresponding discharge ports. The discharge driving components are connected to the corresponding discharge valve plates and are used to drive the discharge valve plates to move so that the discharge valve plates cover the discharge ports or separate from the discharge ports.

6. The waste treatment system for incineration plants according to claim 1, characterized in that, It also includes a desulfurization tank, the inlet of which is connected to the flue gas outlet of the incinerator.

7. The waste treatment system for incineration plants according to claim 6, characterized in that, It also includes a dust collector, the inlet of which is connected to the outlet of the desulfurization tank.

8. The waste treatment system for incineration plants according to claim 7, characterized in that, The dust collector is a bag filter.

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