Integrated processing system for municipal solid waste

Abstract

The application provides a kind of municipal solid waste integrated processing system, including incinerator group, and incinerator group is connected with internal communication gas guide pipe, and the side of incinerator group is equipped with gas guide assembly, and is connected with processing tower through gas guide assembly, and processing tower includes gas guide tank located above and four waste heat treatment tanks located below, and gas guide tank and four waste heat treatment tanks are integrated forming structure, and the side of four waste heat treatment tanks is equipped with back gas assembly, and is communicated with the bottom of incinerator group through back gas assembly.The application can carry out twice adsorption treatment to gas, reduce the subsequent treatment process of incineration gas, and realize the waste heat in incinerator group at the same time, further enhance the effect of waste heat utilization in municipal solid waste incineration, reduce the waste of waste heat in gas caused by gas emission.

Description

Technical Field

[0001] This invention relates to the field of municipal solid waste incinerator technology, and more specifically, to an integrated municipal solid waste treatment system. Background Technology

[0002] Urban solid waste management has increasingly become a global concern and a complex, comprehensive, and systematic project. With the sustained rapid development of the national economy and the acceleration of urbanization, the amount of urban solid waste generated in my country has increased rapidly. Especially in economically developed, densely populated areas with scarce land resources, traditional landfill and composting processes can no longer meet the requirements of daily waste management. Incineration, with its advantages in volume reduction, harmlessness, and resource recovery, has become the preferred solution for many cities to address the problem of waste accumulation.

[0003] Regarding the municipal solid waste incinerator proposed in Chinese Patent (Application No.: 201620961179.1), when incinerating waste, the waste is fed into the inlet of the incinerator body and then burned in the grate assembly. Due to the movable grate, during waste incineration, the telescopic component controls the reciprocating rotation of the shaft, which then transmits force to the movable grate through the connecting rod, thereby causing the movable grate to reciprocate. This not only tumbles the burning waste, ensuring thorough mixing of the waste with the air and air supplied by the air inlet pipe, accelerating the combustion speed and efficiency, but also moves the waste continuously from the inlet to the outlet of the incinerator body. During this movement, the waste completes full combustion, and the ash is then discharged from the outlet of the incinerator body, achieving thorough and rapid combustion of the waste and ensuring the effective elimination of harmful substances in the waste.

[0004] However, this type of incinerator has certain drawbacks: when incinerating municipal waste, the incinerated gas contains a large amount of toxic and harmful substances, which increases the subsequent processing steps for the incinerated gas. At the same time, the incinerated gas contains a lot of residual heat, which will be wasted when the gas is discharged.

[0005] Therefore, we have made improvements to this and proposed an integrated urban domestic waste treatment system. Summary of the Invention

[0006] The purpose of this invention is to address the problem that the incineration gas contains a large amount of toxic and harmful substances, which increases the subsequent processing steps of the incineration gas. At the same time, the incineration gas contains a lot of residual heat, which leads to a large amount of waste of residual heat when the gas is discharged.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solution:

[0008] An integrated urban domestic waste treatment system is proposed to improve the above-mentioned problems.

[0009] The application is as follows:

[0010] The system includes an incinerator group, which is connected by an internal gas-guiding pipe. A gas-guiding component is provided on one side of the incinerator group, and a treatment tower is connected to the gas-guiding component. The treatment tower includes a gas-guiding box located above and four waste heat treatment boxes located below. The gas-guiding box and the four waste heat treatment boxes are integrally formed. Each of the four waste heat treatment boxes is provided with a return gas component on its side, and the return gas component is connected to the bottom of the incinerator group.

[0011] The gas guiding assembly includes three insulated bends. One end of each of the three insulated bends is fixed to the top of the incinerator assembly. The other end of each of the three insulated bends is connected to a gas collecting section. An F-shaped gas guiding pipe is fixed to the top of the gas collecting section. The two outlets of the F-shaped gas guiding pipe are fixed to the top and middle of the treatment tower, respectively.

[0012] The gas return assembly includes an L-shaped gas return pipe. The upper end of the L-shaped gas return pipe is fixed to the bottom side of the waste heat treatment box, and the lower ends of several L-shaped gas return pipes are inserted below the ground and fixedly connected to a flow guiding metal box. The end of the flow guiding metal box away from the L-shaped gas return pipe extends to the bottom of the incinerator group and is connected to the incinerator group.

[0013] As a preferred technical solution of this application, the incinerator group includes a first incinerator, a second incinerator, and a third incinerator arranged horizontally and having the same structure and specifications. The top inner part of the first incinerator is provided with a heat collection layer, the bottom inner part of the first incinerator is provided with a combustion layer, and an isolation mesh plate is fixedly provided between the heat collection layer and the combustion layer. The interior of the isolation mesh plate is filled with heat exchange sillimanite.

[0014] As a preferred technical solution of this application, a heat pipe is fixedly provided on one side of the top of the flow guiding metal box, and one end of the heat pipe passes through the ground and enters the interior of the incinerator group, and connects to the interior of the combustion layer.

[0015] As a preferred technical solution of this application, the internal connecting gas pipe includes an upper gas pipe and a lower gas pipe arranged in parallel. The top sides of the first incinerator, the second incinerator, and the third incinerator are connected in sequence through the upper gas pipe, and the two ends of the upper gas pipe are respectively connected to the interior of the heat collection layer at the corresponding position. The bottom sides of the first incinerator, the second incinerator, and the third incinerator are connected in sequence through the lower gas pipe, and the two ends of the lower gas pipe are respectively connected to the interior of the combustion layer at the corresponding position. A first air-closing valve is fixedly sleeved on both the upper gas pipe and the lower gas pipe.

[0016] As a preferred technical solution of this application, a blower is connected to the top side of the first incinerator via a conduit, and an air pump is connected to the bottom side of the first incinerator via a conduit.

[0017] As a preferred technical solution of this application, a pressure pump is fixedly installed on the side of the gas collecting section, and a temperature probe is installed inside the gas collecting section. The temperature probe is connected to a temperature display screen located outside the gas collecting section via a wire.

[0018] As a preferred technical solution of this application, the top of the air guide box is fixedly provided with a main air inlet, and the main air inlet is fixedly connected to the first output port of the F-type air guide pipe. The side of the air guide box is fixedly provided with an auxiliary air inlet, and the auxiliary air inlet is fixedly connected to the second output port of the F-type air guide pipe. The diameter of the first output port of the F-type air guide pipe is larger than the diameter of the second output port. A second air-closing valve is fixedly provided on the pipes of the first and second output ports of the F-type air guide pipe. A cleaning ring is fixedly provided at the bottom of the air guide box, and a multi-layer activated carbon adsorption mesh is fixedly provided inside the cleaning ring.

[0019] As a preferred technical solution of this application, the top of the four waste heat treatment boxes is fixedly provided with a gas distribution box layer, and the bottom of the gas distribution box layer is provided with four gas distribution channels, which correspond one-to-one with the waste heat treatment boxes.

[0020] As a preferred technical solution of this application, the waste heat treatment box includes an outer box wall, an air guide cylinder is fixedly provided on the outer side of the outer box wall, and a movable shaft is fixedly provided at the top and bottom of the inner side of the air guide cylinder, and an auger conveyor rod is movably connected between the two movable shafts.

[0021] As a preferred technical solution of this application, a hollow layer is formed between the inner wall of the outer casing and the outer wall of the air guide cylinder, and a water inlet pipe is fixedly provided at the top side of the outer casing and a water outlet pipe is fixedly provided at the bottom side of the outer casing. One end of the water inlet pipe and the water outlet pipe both pass through the outer casing and are connected to the interior of the hollow layer.

[0022] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0023] In the scheme of this application:

[0024] 1. By incinerating waste in the incinerator group and simultaneously performing preliminary screening of the waste, the gas containing residual heat is then guided to the treatment tower through the gas guiding component. In the treatment tower, the gas undergoes secondary adsorption treatment, reducing the need for subsequent processing steps of the gas after incineration. At this point, the treated gas still contains a large amount of residual heat. The gas containing residual heat is then guided again, and some of the heat in the gas is removed in the treatment tower, realizing the utilization of the residual heat of the gas after incineration. At the same time, the gas still containing residual heat is guided on the return gas component and returned to the incinerator group, realizing the utilization of the residual heat in the incinerator group, further enhancing the effect of residual heat utilization in municipal solid waste incineration, and reducing the waste of residual heat in the gas during gas emission.

[0025] 2. Through the set incinerator group, the first incinerator, the second incinerator and the third incinerator can all carry out the incineration of municipal solid waste. When the first incinerator, the second incinerator and the third incinerator are working, the waste is burned in the combustion layer, and then the heat is transferred to the heat collection layer through the isolation mesh plate, and finally the heat-containing gas is discharged. During this process, larger solid materials after incineration can be filtered and screened, thereby realizing the separation of waste after incineration, which facilitates the cleaning of waste inside the incinerator group;

[0026] 3. By using the set gas guiding components, the gas containing a large amount of waste heat is discharged through the heat-insulated bend pipe. With the help of the pressurized pump and the second shut-off valve, the gas flow rate is controlled. The gas is then diverted through the F-type gas guiding pipe and introduced into the gas guiding box of the treatment tower. This achieves gas heat preservation and transportation. The gas transportation efficiency is adjusted according to the gas treatment efficiency, which improves the practicality of the device.

[0027] 4. Through the set treatment tower and return gas assembly, the gas containing a large amount of waste heat is filtered and cleaned at the cleaning ring when passing through the treatment tower. Then, it undergoes secondary flow guidance in the gas distribution box layer, and gas speed reduction and partial exhaust of waste heat are carried out in the waste heat treatment box, which improves the utilization of waste heat of the gas after combustion. At the same time, the remaining gas can be effectively transported through the L-shaped return gas pipe and the flow guiding metal box in the return gas assembly to realize the waste heat of the combustion furnace group, further improving the utilization effect of waste heat of the gas after combustion. Attached Figure Description

[0028] Figure 1 This application provides a structural schematic diagram of an integrated urban domestic waste treatment system.

[0029] Figure 2 A schematic diagram of the structure of an incinerator unit for an integrated urban solid waste treatment system provided in this application;

[0030] Figure 3 A plan view of an incinerator unit for an integrated municipal solid waste treatment system provided in this application;

[0031] Figure 4 A schematic diagram of the air guiding component of an integrated urban solid waste treatment system provided in this application;

[0032] Figure 5 This application provides a schematic diagram of the structure of a treatment tower for an integrated urban solid waste treatment system.

[0033] Figure 6 A schematic diagram of the internal structure of the waste heat treatment box of an integrated urban solid waste treatment system provided in this application;

[0034] Figure 7 A schematic diagram of the auger conveyor rod of an integrated urban domestic waste treatment system provided in this application;

[0035] Figure 8 This application provides a schematic diagram of the return gas component structure of an integrated urban domestic waste treatment system.

[0036] The image shows:

[0037] 1. Incinerator group; 101. First incinerator; 1011. Heat collection layer; 1012. Combustion layer; 1013. Isolation mesh plate; 1014. Fan; 1015. Air pump; 102. Second incinerator; 103. Third incinerator;

[0038] 2. Internal connecting air guide tube; 201. Upper air guide tube; 2011. First air-closing valve; 202. Lower air guide tube;

[0039] 3. Air guiding assembly; 301. Insulated elbow; 302. Air collecting joint; 3021. Pressure pump; 3022. Temperature display screen; 303. Type F air guiding pipe; 3031. Second air shut-off valve;

[0040] 4. Processing tower; 401. Air guide box; 4011. Main air inlet; 4012. Auxiliary air inlet; 402. Waste heat treatment box; 4021. Air distribution box layer; 4022. Outer box wall; 4023. Air guide cylinder; 4024. Movable shaft; 4025. Screw conveyor rod; 4026. Water inlet pipe; 4027. Water outlet pipe; 403. Cleaning ring;

[0041] 5. Return gas assembly; 501. L-shaped return gas pipe; 502. Flow guide metal box; 5021. Heat pipe. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0043] Therefore, the following detailed description of embodiments of the present invention is not intended to limit the scope of the claimed invention, but merely illustrates some embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0044] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0045] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0046] In the description of this invention, it should be noted that the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0047] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, this embodiment proposes an integrated urban domestic waste treatment system, including an incinerator group 1, with an internally connected gas guide pipe 2 connecting the incinerator groups 1. A gas guide component 3 is provided on one side of the incinerator group 1, and a treatment tower 4 is connected through the gas guide component 3. The treatment tower 4 includes a gas guide box 401 located above and four waste heat treatment boxes 402 located below. The gas guide box 401 and the four waste heat treatment boxes 402 are integrally formed. A return gas component 5 is provided on the side of each of the four waste heat treatment boxes 402, and the return gas component 5 is connected to the bottom of the incinerator group 1.

[0048] Incinerator group 1 is responsible for incinerating municipal solid waste. The high-heat gas produced after incineration can circulate between incinerator groups 1 through the internal connecting gas pipe 2. The gas with residual heat then flows to the treatment tower 4 through the gas guiding component 3. The gas undergoes simple purification at the gas guiding box 401 and partial utilization of residual heat at the waste heat treatment box 402. Finally, the gas still containing residual heat is guided back to incinerator group 1 through the return gas component 5 to preheat incinerator group 1 and reduce the energy consumption of incinerator group 1 before combustion.

[0049] The gas guiding assembly 3 includes three insulated bends 301. One end of the three insulated bends 301 is fixed to the top of the incinerator group 1, and the other end of the three insulated bends 301 is connected to a gas collecting section 302. An F-type gas guiding pipe 303 is fixed at the top of the gas collecting section 302. The two outlets of the F-type gas guiding pipe 303 are fixed to the top and middle of the processing tower 4, respectively.

[0050] The hot gas generated in the incinerator group 1 is discharged from the corresponding insulated bend 301, and then collected in the gas collection section 302 and discharged through the F-type gas guide pipe 303. The discharged gas enters the treatment tower 4 for treatment.

[0051] The return gas assembly 5 includes an L-shaped return gas pipe 501. The upper end of the L-shaped return gas pipe 501 is fixed to the bottom side of the waste heat treatment box 402, and the lower ends of several L-shaped return gas pipes 501 are inserted below the ground and fixedly connected to a flow guiding metal box 502. The end of the flow guiding metal box 502 away from the L-shaped return gas pipe 501 extends to the bottom of the incinerator group 1 and is connected to the incinerator group 1.

[0052] The L-shaped return gas pipe 501 guides the remaining gas back into the guide metal box 502, and then the guide metal box 502 guides the gas back into the incinerator group 1 for preheating of the incinerator group 1, realizing the return and utilization of heat.

[0053] like Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the incinerator group 1 further includes a first incinerator 101, a second incinerator 102 and a third incinerator 103 arranged horizontally and having the same structure and specifications. The inner top of the first incinerator 101 is provided with a heat collection layer 1011, and the inner bottom of the first incinerator 101 is provided with a combustion layer 1012. An isolation mesh plate 1013 is fixedly provided between the heat collection layer 1011 and the combustion layer 1012. The interior of the isolation mesh plate 1013 is filled with heat exchange silica sillimanite.

[0054] The first incinerator 101, the second incinerator 102, and the third incinerator 1 in the incinerator group 1 can all perform incineration. When municipal solid waste is filled into the incinerator, the solid waste is fully burned in the combustion layer 1012, and then heat is exchanged through the heat exchange sillimanite in the isolation mesh plate 1013, and the heat is directed to the heat collection layer 1011, thereby performing centralized heat treatment.

[0055] like Figure 3 and Figure 8 As shown, in a preferred embodiment, based on the above method, a heat pipe 5021 is fixedly provided on one side of the top of the flow guiding metal box 502. One end of the heat pipe 5021 passes through the ground and enters the interior of the incinerator group 1, and connects to the interior of the combustion layer 1012.

[0056] The gas flowing through the heat pipe 5021 has a higher temperature than the heat collector layer 1011. During the heat exchange between the combustion layer 1012 and the heat collector layer 1011, a temperature difference between high and low temperatures can be formed. At the same time, when the combustion layer 1012 is filled with sufficient incineration waste, the increased temperature can realize the waste heat of the incinerator group 1 and be used to accelerate combustion. Then the heat is introduced into the heat collector layer 1011 and the waste heat is recycled again, improving the utilization of waste heat during waste incineration.

[0057] like Figure 1 , Figure 2 and Figure 3 As shown, in a preferred embodiment, based on the above method, the internal connecting gas pipe 2 further includes an upper gas pipe 201 and a lower gas pipe 202 arranged in parallel. The top sides of the first incinerator 101, the second incinerator 102 and the third incinerator 103 are connected in sequence through the upper gas pipe 201, and the two ends of the upper gas pipe 201 are respectively connected to the interior of the heat collection layer 1011 at the corresponding position. The bottom sides of the first incinerator 101, the second incinerator 102 and the third incinerator 103 are connected in sequence through the lower gas pipe 202, and the two ends of the lower gas pipe 202 are respectively connected to the interior of the combustion layer 1012 at the corresponding position. A first air-closing valve 2011 is fixedly sleeved on both the upper gas pipe 201 and the lower gas pipe 202.

[0058] The upper air duct 201 is used to connect the heat collection layer 1011 in the first incinerator 101, the second incinerator 102 and the third incinerator 103. When the temperature difference between the waste in the first incinerator 101, the second incinerator 102 and the third incinerator 103 is large, it can be used to initially balance the temperature difference. The lower air duct 202 is used to connect the combustion layer 1012 in the first incinerator 101, the second incinerator 102 and the third incinerator 103, increasing the combustion space of the combustion layer 1012 and increasing the efficiency of air circulation, thereby increasing the combustion efficiency.

[0059] like Figure 2 As shown, in a preferred embodiment, based on the above method, a blower 1014 is connected to the top side of the first incinerator 101 via a conduit, and an air pump 1015 is connected to the bottom side of the first incinerator 101 via a conduit.

[0060] The blower 1014 is used to inject airflow and carry out the hot air containing heat from the heat collection layer 1011 for recycling. The air pump 1015 is used to replenish the air used for combustion in the first incinerator 101, and then replenish the gas in the second incinerator 102 and the third incinerator 103 through the lower air guide pipe 202 to ensure the full combustion of waste.

[0061] like Figure 4 As shown, in a preferred embodiment, based on the above method, a pressure pump 3021 is further fixedly provided on the side of the gas collecting section 302, and a temperature probe is provided inside the gas collecting section 302. The temperature probe is connected to a temperature display screen 3022 located outside the gas collecting section 302 via a wire.

[0062] The booster pump 3021 is used to increase the gas pressure and regulate the flow rate of the gas with waste heat. When the gas with waste heat passes through the gas collecting section 302, the temperature can be detected by a temperature probe and displayed on the temperature display screen 3022. In subsequent comparisons, the heat loss of waste heat recovery can be obtained.

[0063] like Figure 4 and Figure 5 As shown, in a preferred embodiment, based on the above method, the top of the air guide box 401 is further provided with a main air inlet 4011, and the main air inlet 4011 is fixedly connected to the first output port of the F-type air guide pipe 303. The side of the air guide box 401 is provided with an auxiliary air inlet 4012, and the auxiliary air inlet 4012 is fixedly connected to the second output port of the F-type air guide pipe 303. The diameter of the first output port of the F-type air guide pipe 303 is larger than the diameter of the second output port. A second air-closing valve 3031 is fixedly provided on the pipes of the first output port and the second output port of the F-type air guide pipe 303. A cleaning ring 403 is fixedly provided at the bottom of the air guide box 401. A multi-layer activated carbon adsorption mesh is fixedly provided inside the cleaning ring 403.

[0064] Most of the gas containing residual heat in the F-type gas duct 303 reaches the main air inlet 4011 of the gas duct box 401 through the first output port, while a small portion of the gas containing residual heat reaches the auxiliary air inlet 4012 of the gas duct box 401 through the second output port, thus achieving gas diversion in the F-type gas duct 303 and simultaneously achieving a certain pressure release effect. At the same time, the two second air-closing valves 3031 can control the opening and closing of the corresponding output pipes. When used in conjunction with the booster pump 3021, the output efficiency of the gas containing residual heat can be effectively adjusted. When the gas passes through the cleaning ring 403, the multi-layer activated carbon adsorption net can effectively absorb solid particulate matter and some harmful gases in the gas containing residual heat, ensuring that the gas containing residual heat can be recycled in the future.

[0065] like Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the top of the four waste heat treatment boxes 402 is further provided with a gas distribution box layer 4021, and the bottom of the gas distribution box layer 4021 is provided with four gas distribution channels, which correspond one-to-one with the waste heat treatment boxes 402.

[0066] The gas containing waste heat is separated and transferred to four gas distribution boxes 4021 for processing. Then, in the waste heat treatment box 402, part of the waste heat is extracted and utilized, and the other part is recycled.

[0067] like Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, the waste heat treatment box 402 further includes an outer box wall 4022, an air guide cylinder 4023 is fixedly provided on the outer side of the outer box wall 4022, and a movable shaft 4024 is fixedly provided on the top and bottom of the inner side of the air guide cylinder 4023, and an auger conveying rod 4025 is movably connected between the two movable shafts 4024.

[0068] When the gas passes through the waste heat treatment box 402, the flow speed of the gas containing waste heat will decrease due to the influence of the auger conveyor rod 4025. At the same time, the contact area between the gas containing waste heat and the gas guide tube 4023 will increase, which will facilitate the removal and utilization of some heat.

[0069] like Figure 5 , Figure 6 and Figure 7 As shown, in a preferred embodiment, based on the above method, a hollow layer is further formed between the inner wall of the outer casing wall 4022 and the outer wall of the air guide cylinder 4023, and a water inlet pipe 4026 is fixedly provided at the top side of the outer casing wall 4022, and a water outlet pipe 4027 is fixedly provided at the bottom side of the outer casing wall 4022. One end of the water inlet pipe 4026 and the water outlet pipe 4027 both pass through the outer casing wall 4022 and are connected to the interior of the hollow layer.

[0070] Water circulation can be formed by using the inlet pipe 4026 and the outlet pipe 4027. When the hollow layer is filled with water, the stability between the inner wall of the outer casing 4022 and the air guide cylinder 4023 can be improved. At the same time, the heat emitted from the inside of the air guide cylinder 4023 can be absorbed, realizing the utilization of the heat of the gas containing residual heat.

[0071] Specifically, this integrated urban domestic waste treatment system operates as follows:

[0072] First, the first shut-off valve 2011 and the second shut-off valve 3031 are closed. Then, the first incinerator 101, the second incinerator 102, and the third incinerator 1 in the corresponding positions of the incinerator group 1 are opened, and sufficient municipal solid waste is added. The municipal solid waste is then incinerated in the combustion layer 1012. The waste is fully combusted in the combustion layer 1012, and then heat is exchanged through the heat exchange silica sillimanite in the isolation mesh plate 1013, directing the heat to the heat collection layer 1011 for centralized heat treatment. During this process, the blower 1014 is used to inject airflow and direct the heat to the heat collection layer. The hot gas containing heat from 1011 is carried out for recycling. The upper air duct 201 is used to connect the heat collection layer 1011 in the first incinerator 101, the second incinerator 102, and the third incinerator 103. When the temperature difference between the waste in the first incinerator 101, the second incinerator 102, and the third incinerator 103 is large, it can be used to initially balance the temperature difference. The air pump 1015 is used to replenish the air used for combustion in the first incinerator 101. The lower air duct 202 replenishes the gas in the second incinerator 102 and the third incinerator 103 to ensure the complete combustion of waste.

[0073] Then, the hot gas generated in the incinerator group 1 is discharged from the corresponding insulated bends 301 and collected in the gas collection section 302. At this time, the pressurizing pump 3021 is used to increase the gas pressure and adjust the flow rate of the gas with residual heat. When the gas with residual heat passes through the gas collection section 302, the temperature can be detected by the temperature probe and displayed on the temperature display screen 3022. In subsequent comparison, the heat loss of the waste heat recovery can be obtained. Then, most of the gas with residual heat in the F-type gas guide pipe 303 reaches the main air inlet 4011 of the gas guide box 401 through the first outlet, and a small part of the gas with residual heat reaches the auxiliary air inlet 4012 of the gas guide box 401 through the second outlet, realizing the gas diversion of the F-type gas guide pipe 303 and at the same time playing a certain pressure release effect, so as to introduce the gas into the treatment tower 4.

[0074] Then, the gas in the gas guide box 401 reaches the cleaning ring 403. When the gas passes through the cleaning ring 403, the multi-level activated carbon adsorption net can effectively absorb solid particles and some harmful gases in the gas containing residual heat, ensuring that the gas containing residual heat can be recycled. Then, under the action of the gas distribution box layer 4021, the gas containing residual heat is separated and transferred to the four gas distribution box layers 4021 for processing. At this time, the flow speed of the gas containing residual heat will decrease due to the influence of the auger conveying rod 4025, while increasing the contact area between the gas containing residual heat and the gas guide cylinder 4023, thereby dissipating some heat. Then, water circulation can be formed by using the water inlet pipe 4026 and the water outlet pipe 4027. When the hollow layer is filled with water, the stability between the inner wall of the outer box wall 4022 and the gas guide cylinder 4023 can be improved, and the heat emitted from the inside of the gas guide cylinder 4023 can be absorbed, realizing the utilization of the heat of the gas containing residual heat.

[0075] Then, the remaining gas containing heat is reintroduced into the guide metal box 502 through the L-shaped return gas pipe 501, and then guided back to the combustion layer 1012 of the incinerator group 1 by the guide metal box 502 for preheating of the incinerator group 1. The temperature is higher than that of the heat collection layer 1011. When heat exchange occurs from the combustion layer 1012 to the heat collection layer 1011, a temperature difference between high and low temperatures can be formed. At the same time, when the combustion layer 1012 is filled with sufficient incineration waste, the increased temperature can realize the residual heat of the incinerator group 1 and be used to accelerate combustion. Then the heat is introduced into the heat collection layer 1011 for the recirculation of residual heat, thereby improving the utilization of residual heat during waste incineration.

[0076] This enables the waste heat furnace to operate and improves the utilization of waste heat from incineration.

[0077] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described herein. Although the present invention has been described in detail with reference to the above embodiments, the present invention is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present invention, as well as all technical solutions and improvements that do not depart from the spirit and scope of the invention, are covered within the scope of the claims of the present invention.

Claims

1. An integrated urban domestic waste treatment system, comprising an incinerator group (1), characterized in that, The incinerator groups (1) are connected by an internal gas-conducting pipe (2). A gas-conducting component (3) is provided on one side of the incinerator group (1), and a treatment tower (4) is connected through the gas-conducting component (3). The treatment tower (4) includes a gas-conducting box (401) located above and four waste heat treatment boxes (402) located below. The gas-conducting box (401) and the four waste heat treatment boxes (402) are integrally formed. A return gas component (5) is provided on the side of each of the four waste heat treatment boxes (402), and the return gas component (5) is connected to the bottom of the incinerator group (1). The gas guiding assembly (3) includes three insulated bends (301), one end of the three insulated bends (301) is fixed to the top of the incinerator group (1), and the other end of the three insulated bends (301) is connected to a gas collecting section (302). An F-type gas guiding pipe (303) is fixed at the top of the gas collecting section (302), and the two outlets of the F-type gas guiding pipe (303) are fixed to the top and middle of the treatment tower (4) respectively. The return gas assembly (5) includes an L-shaped return gas pipe (501), the upper end of which is fixed to the bottom side of the waste heat treatment box (402), and the lower ends of several L-shaped return gas pipes (501) are inserted below the ground and fixedly connected to a flow guiding metal box (502). The end of the flow guiding metal box (502) away from the L-shaped return gas pipe (501) extends to the bottom of the incinerator group (1) and is connected to the incinerator group (1). The incinerator group (1) includes a first incinerator (101), a second incinerator (102) and a third incinerator (103) arranged horizontally and having the same structure and specifications. The first incinerator (101) has a heat collection layer (1011) at its inner top and a combustion layer (1012) at its inner bottom. An isolation mesh plate (1013) is fixed between the heat collection layer (1011) and the combustion layer (1012). The isolation mesh plate (1013) is filled with heat exchange silica sillimanite. The internal connecting gas pipe (2) includes an upper gas pipe (201) and a lower gas pipe (202) arranged in parallel. The top sides of the first incinerator (101), the second incinerator (102) and the third incinerator (103) are connected in sequence through the upper gas pipe (201), and the two ends of the upper gas pipe (201) are respectively connected to the interior of the heat collection layer (1011) at the corresponding position. The bottom sides of the first incinerator (101), the second incinerator (102) and the third incinerator (103) are connected in sequence through the lower gas pipe (202), and the two ends of the lower gas pipe (202) are respectively connected to the interior of the combustion layer (1012) at the corresponding position. A first air-closing valve (2011) is fixedly sleeved on both the upper gas pipe (201) and the lower gas pipe (202). The top of the air guide box (401) is fixedly provided with a main air inlet (4011), and the main air inlet (4011) is fixedly connected to the first output port of the F-type air guide pipe (303). The side of the air guide box (401) is fixedly provided with an auxiliary air inlet (4012), and the auxiliary air inlet (4012) is fixedly connected to the second output port of the F-type air guide pipe (303). The diameter of the first output port of the F-type air guide pipe (303) is larger than the diameter of the second output port. A second air shut-off valve (3031) is fixedly provided on the pipes of the first and second output ports of the F-type air guide pipe (303). A cleaning ring (403) is fixedly provided at the bottom of the air guide box (401). A multi-layer activated carbon adsorption mesh is fixedly provided inside the cleaning ring (403). The waste heat treatment box (402) includes an outer box wall (4022), and an air guide cylinder (4023) is fixedly provided on the outer side of the outer box wall (4022). The top and bottom of the inner side of the air guide cylinder (4023) are both fixedly provided with movable shafts (4024), and an auger conveyor rod (4025) is movably connected between the two movable shafts (4024). A hollow layer is formed between the inner wall of the outer casing (4022) and the outer wall of the air guide cylinder (4023). A water inlet pipe (4026) is fixedly provided at the top side of the outer casing (4022), and a water outlet pipe (4027) is fixedly provided at the bottom side of the outer casing (4022). One end of the water inlet pipe (4026) and the water outlet pipe (4027) both pass through the outer casing (4022) and are connected to the interior of the hollow layer.

2. The integrated urban domestic waste treatment system according to claim 1, characterized in that: A heat pipe (5021) is fixedly provided on one side of the top of the flow guiding metal box (502). One end of the heat pipe (5021) passes through the ground and enters the interior of the incinerator group (1), and connects to the interior of the combustion layer (1012).

3. The integrated urban domestic waste treatment system according to claim 2, characterized in that: A blower (1014) is connected to the top side of the first incinerator (101) via a conduit, and an air pump (1015) is connected to the bottom side of the first incinerator (101) via a conduit.

4. The integrated urban domestic waste treatment system according to claim 1, characterized in that: A pressure pump (3021) is fixedly installed on the side of the gas collection section (302), and a temperature probe is installed inside the gas collection section (302). The temperature probe is connected to a temperature display screen (3022) located outside the gas collection section (302) via a wire.

5. The integrated urban domestic waste treatment system according to claim 1, characterized in that: The top of each of the four waste heat treatment boxes (402) is fixedly provided with a gas distribution box layer (4021), and the bottom of the gas distribution box layer (4021) is provided with four gas distribution channels, which correspond one-to-one with the waste heat treatment box (402).

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