Solar heat collection type community household garbage drying and deodorizing integrated system and drying treatment method

Abstract

The invention relates to the technical field of household garbage drying and deodorizing treatment, in particular to a solar heat collection type community household garbage drying and deodorizing integrated system and a drying treatment method.The solar heat collection type community household garbage drying and deodorizing integrated system comprises a sealed drying system used for treating household garbage; the heat source supply system uses solar energy to heat water to provide circulating hot water for a heat exchange pipe in the sealed drying system; and the waste gas deodorization system is used for treating waste gas generated by the sealed drying system and treating the waste gas, so that the treated waste gas is heated and conveyed back to the sealed drying system for recycling. According to the system, the solar hot water circulating pipe network is used for providing heat energy for the drying system, and energy consumption needed by system heat source supply is greatly reduced; meanwhile, low-temperature gas subjected to deodorization treatment is introduced into the preheater to preheat fresh air, and energy consumption needed for heating cold air can be reduced; and a hot water pipeline heat radiation and hot air combined drying mode is adopted, so that the garbage drying efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of domestic waste drying and deodorization treatment, and particularly relates to a solar heat collection type integrated system for domestic waste drying and deodorization in communities and a drying treatment method. Background Art

[0002] With the development of the economic society, the output of domestic waste in China has increased rapidly. In 2022, the national urban domestic waste removal volume was approximately 250 million tons. If domestic waste is disposed of by simple landfill, it not only occupies a large amount of land, causing pollution to the groundwater and odor around the landfill. From the perspective of energy, there is great potential for converting waste into heat energy and making full use of it. However, at present, the moisture content of domestic waste in China is generally high and the uniformity is poor. Direct incineration will bring problems such as low combustion efficiency and great difficulty in controlling the generation and emission of pollutants. In addition, the high moisture content of domestic waste in China makes the different components in the waste adhere to each other seriously, and the mechanical separability is poor, which limits the possibility of optimizing the waste treatment process through sorting. Therefore, in order to improve the level of waste resource utilization in China and reduce the management cost of domestic waste, it is urgent to develop domestic waste drying technology.

[0003] Currently, the more popular waste drying technologies in the market are mainly electric energy drying technology, direct contact rotary drying, biological drying technology, etc. However, due to the complex composition and high humidity of waste, traditional drying technologies have disadvantages such as high drying energy consumption and long drying cycle. At the same time, the pungent and toxic odor gases such as ammonia and hydrogen sulfide generated during the waste drying process will cause secondary pollution problems when discharged into the environment. Summary of the Invention

[0004] The technical problem to be solved by the present invention is: the waste gas generated during the domestic waste treatment process pollutes the air.

[0005] To this end, the present invention provides a solar heat collection type integrated system for domestic waste drying and deodorization in communities and a drying treatment method.

[0006] The technical solution adopted by the present invention to solve its technical problems is:

[0007] A solar heat collection type integrated system for domestic waste drying and deodorization in communities, comprising:

[0008] A sealed drying system for treating domestic waste;

[0009] A heat source supply system that supplies energy to the sealed drying system through solar energy;

[0010] An exhaust gas deodorization system for treating the exhaust gas generated by the sealed drying system and treating the exhaust gas so that the treated exhaust gas is heated and returned to the sealed drying system for reuse.

[0011] Further, the sealed drying system includes a processing tank, on which a feed inlet and a discharge outlet are provided. A leachate outflow hole is provided at the bottom of the processing tank. The upper layer inside the processing tank is a processing chamber, and the lower layer is a heat exchange chamber. The discharge outlet is provided on the side wall of the processing tank and close to the bottom of the processing chamber. A plurality of conveyor belts are arranged vertically in the processing tank, and the plurality of conveyor belts convey the garbage entering the processing tank from the feed inlet towards the discharge outlet. Heat exchange tubes are arranged in the heat exchange chamber, and the heat source supply system is used to provide circulating hot water for the heat exchange tubes.

[0012] Further, an air inlet pipe is provided at the bottom of the heat exchange chamber of the processing tank, and an air outlet pipe is provided at the top of the processing tank. The waste gas deodorization system is connected to the processing tank through the air inlet pipe and the air outlet pipe, and a gas mixing tank and a circulation fan are connected to the air inlet pipe.

[0013] Further, the waste gas deodorization system includes a reaction tank. The air inlet pipe and the air outlet pipe are respectively connected to two ends of the reaction tank. The end of the processing tank connected to the air inlet pipe is the output end, and the end connected to the air outlet pipe is the input end. Along the direction from the input end to the output end, a filtering component, a photocatalytic reaction component, and a physical adsorption component are sequentially arranged in the processing tank.

[0014] Further, the filtering material in the filtering component adopts 316L alloy fiber filter material, and a water outlet is provided at the position of the processing tank opposite to the filtering component.

[0015] Further, the photocatalytic reaction component includes a bracket and a light source system. The bracket is connected inside the processing tank. The bracket is arranged in a multi-layer structure along the direction from the input end to the output end, and a photocatalyst coating is coated on the bracket. The light source system is arranged in the middle of the bracket.

[0016] Further, the heat source supply system includes a heat preservation water tank, a photovoltaic panel, and an energy storage battery. A heating sheet for heating the water in the heat preservation water tank is arranged in the heat preservation water tank. The energy storage battery supplies energy to the heating sheet, and the solar photovoltaic panel supplies power to the energy storage battery. A water outlet pipe and a circulation pipe are provided on the heat preservation water tank. The water outlet pipe and the circulation pipe are respectively connected to two ends of the heat exchange tube, and a circulation water pump is connected to the water outlet pipe.

[0017] A method for garbage drying treatment using the above-mentioned solar heat collection type integrated system for domestic garbage drying and deodorization in a community includes the following steps.

[0018] Step 1, system preheating: The heat source supply system supplies heat to the sealed drying system, so that the water temperature in the heat exchange tubes is 95 - 98 °C, and the heat exchange tubes heat the air in the air inlet pipe to 85 - 90 °C.

[0019] Step 2: Waste treatment. The waste enters the treatment tank and is transported layer by layer through multiple conveyor belts and discharged from the discharge port.

[0020] Step 3: Exhaust gas deodorization. The malodorous gas input from the treatment tank into the reaction tank passes through the filtration component, photocatalytic reaction component, and physical adsorption component in sequence. The moisture, dust, etc. entrained in the malodorous gas are effectively intercepted, the malodorous gas is catalytically degraded, the odor is removed, and the purified gas enters the treatment tank through the air inlet pipe after being heated.

[0021] Further, the temperature at the air inlet pipe of the treatment tank is 85°C to 90°C.

[0022] The beneficial effects of the present invention are as follows:

[0023] This system uses the solar hot water circulation pipe network to provide heat energy for the drying system, greatly reducing the energy consumption required for the system heat source supply. At the same time, introducing the deodorized low-temperature gas into the preheater to preheat the fresh air can reduce the energy consumption required for heating the cold air. The combination of hot water pipe heat radiation and hot air drying methods can increase the drying efficiency of the waste by 10 - 20%. At the same time, the required air volume is only about 80% of that of the traditional drying system, greatly reducing the energy consumption required for the heat source and air source supply. Tests have proved that under sufficient sunlight conditions, the waste drying and deodorization system based on solar hot water circulation can save 80 - 90% of energy. In rainy or cloudy weather, it can be obtained through electric heating, and it can still save about 10% of energy compared with the traditional drying system.

[0024] The intake port of the exhaust gas deodorization system of this system is provided with a filtration section, a photocatalytic reaction section, and a physical adsorption section. The filtration section can effectively intercept and pre-treat the water vapor, particulate matter, or dust brought in from the front end. The photocatalytic reaction section is arranged in multiple layers, and the photocatalyst uses a new type of C 3 N 4 / BiOIO 3 composite nanomaterial. The wavelength range of its light source is large, and under visible light conditions, it can effectively photocatalytically oxidize and decompose malodorous gases such as ammonia and hydrogen sulfide in the exhaust gas. The physical adsorption section can adsorb the gas that has not been completely treated at the front end. Through the multi-layer arrangement method of the filtration section, photocatalytic reaction section, and physical adsorption section, the treatment efficiency of malodorous gases in the exhaust gas can be greatly improved. Description of the Drawings

[0025] The present invention will be further described below with reference to the drawings and embodiments.

[0026] Figure 1 It is a schematic structural diagram of the solar heat collection type integrated system for drying and deodorizing domestic waste in a community of the present invention.

[0027] Figure 2It is a schematic diagram of the garbage drying time under different wind speeds in the present invention.

[0028] In the figure: 1. Heat source supply system; 11. Solar water heater; 12. Solar photovoltaic panel; 13. Energy storage battery; 14. Heat preservation water tank; 15. Circulation water pump; 16. Heating sheet; 17. Outlet pipe; 18. Circulation pipe; 2. Sealed drying system; 21. Treatment tank; 22. Transmission belt; 23. Crushing device; 24. Heat exchange pipe; 25. Gas mixing tank; 26. Feeding port; 27. Discharging port; 28. Air inlet pipe; 29. Air outlet pipe; 3. Exhaust gas deodorization system; 31. Reaction tank; 32. Input end; 33. Output end; 34. Circulation fan; 35. Filter assembly; 36. Photocatalytic reaction assembly; 37. Adsorption assembly. Detailed implementation manners

[0029] Now, the present invention will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present invention in a schematic way, so they only show the components related to the present invention.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0031] In the description of the present invention, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0032] Refer to Figure 1, a solar heat collection type integrated system for drying and deodorizing domestic waste in a community, including a heat source supply system 1, a sealed drying system 2 and an exhaust gas deodorizing system 3. The sealed drying system 2 is used to process domestic waste. The heat source supply system 1 supplies energy to the sealed drying system 2 through solar energy. The exhaust gas deodorizing system 3 is used to process the exhaust gas generated by the sealed drying system 2 and treat the exhaust gas so that the treated exhaust gas is returned to the sealed drying system 2 for reuse.

[0033] The sealed drying system 2 includes a treatment tank 21, a transmission assembly, a crushing device 23 and a heat exchange device. Heat insulation layers with blackened surfaces are provided on the inner sides of the four walls of the treatment tank 21. An inlet 26 and an outlet 27 are provided on the treatment tank 21. A leachate outflow hole is provided at the bottom of the treatment tank 21. In this embodiment, the treatment tank 21 is 1.5 - 2.0 m long, 1.5 - 2.0 m wide and 1.5 - 2.0 m high. The upper layer inside the treatment tank 21 is a treatment chamber, and the lower layer is a heat exchange chamber. The inlet 26 is provided at the top of the treatment tank 21, and the outlet 27 is provided on the side wall of the treatment tank 21 and close to the bottom of the treatment chamber. The crushing device 23 is provided at the inlet 26 inside the treatment tank 21, and a feed hopper is provided at the inlet 26. Temperature and humidity sensors are provided inside the sealed drying system 2 and are electrically connected to a control device through corresponding circuits.

[0034] The transmission assembly includes a plurality of conveyor belts 22. The plurality of conveyor belts 22 are arranged vertically and are staggered in the horizontal direction. According to the humidity of the garbage, 3 - 5 layers of conveyor belts 22 are provided. The distance between each layer is 0.3 m, the length is 1.3 - 2.0 m, and the sieve hole diameter is 10 - 30 mm. Among two adjacent conveyor belts 22, the two ends of the two conveyor belts 22 away from each other are respectively abutted against the opposite side walls inside the treatment tank 21. The two ends of the lowermost conveyor belt 22 among the plurality of conveyor belts 22 are respectively abutted against the opposite side walls inside the treatment tank 21 and are opposite to the outlet 27, and the garbage is transported towards the outlet 27.

[0035] The heat exchange device includes heat exchange tubes 24 arranged in a serpentine shape in the heat exchange chamber. The heat exchange tubes 24 are made of corrosion-resistant stainless steel tubes. Heat dissipation fins are provided on the heat exchange tubes 24. An air inlet pipe 28 is provided at the bottom of the heat exchange chamber, and an air outlet pipe 29 is provided at the top of the treatment tank 21.

[0036] The heat source supply system 1 includes a solar water heater 11, a solar photovoltaic panel 12, a storage battery 13, and a heat preservation water tank. A heating element 16 is arranged in the heat preservation water tank 14. The storage battery 13 is connected between the photovoltaic panel and the heating element 16. The storage battery 13 supplies energy to the heating element 16, and the heating element 16 is used to heat the water in the heat preservation water tank 14. The solar water heater 11 is connected to the heat preservation water tank 14. At the bottom position of the heat preservation water tank 14, a water outlet pipe 17 is arranged. A circulating pipe 18 is also connected to the side wall of the heat preservation water tank 14. The water outlet pipe 17 and the circulating pipe 18 are respectively connected to two ends of the heat exchange pipe 24. A circulating water pump 15 is connected to the water outlet pipe 17.

[0037] The waste gas deodorization system 3 includes a reaction tank 31. An air inlet pipe 28 and an air outlet pipe 29 are respectively connected to two ends of the reaction tank 31. One end of the treatment tank 21 connected to the air inlet pipe 28 is the output end 33, and one end connected to the air outlet pipe 29 is the input end 32. The air outlet pipe 29 outputs the waste gas generated in the treatment tank 21 into the reaction tank 31, and the air inlet pipe 28 returns the treated waste gas to the treatment tank 21. A mixing gas tank 25 and a circulating fan 34 are connected to the air inlet pipe 28. The circulating fan 34 is arranged on the part of the air inlet pipe 28 close to the reaction tank 31.

[0038] Along the direction from the input end 32 to the output end 33, a filtering component 35, a photocatalytic reaction component 36, and a physical adsorption component 37 are sequentially arranged in the treatment tank 21. The filtering component 35 is a primary filtering layer. The filtering section material uses 316L alloy fiber filter material, and a water outlet is arranged in the filtering section. The photocatalytic reaction component 36 includes a bracket and a light source system. The bracket is connected in the treatment tank 21. The bracket is arranged as a multi-layer structure along the direction from the input end 32 to the output end 33. A photocatalyst coating is coated on the bracket. The light source system is arranged in the middle of the bracket. The physical adsorption component 37 includes a support frame and an adsorption layer. The support frame is a stainless steel wire mesh for supporting the adsorption layer. The adsorption layer can be biochar or activated carbon fiber.

[0039] Under visible light / ultraviolet light irradiation, the photocatalyst is excited to generate electron-hole pairs. The holes decompose the water adsorbed on the surface of the catalyst to produce hydroxyl radicals (-OH), and the electrons reduce the oxygen around them to oxygen anions (O 2 -), which have extremely strong redox ability and can decompose malodorous gas molecules. Activated carbon has a strong adsorption ability and can adsorb the gas not completely treated at the front end.

[0040] A method for garbage drying treatment includes the following steps:

[0041] Step 1: System preheating

[0042] When the sun is sufficient during the day, the cold water in the heat preservation water tank 14 is heated to the specified temperature by the solar water heater 11, and then the circulating water pump 15 is used to circulate the water through the heat exchange pipe 24 in the system repeatedly, heating the water temperature in the entire circulating water system to the specified temperature; at the same time, the solar photovoltaic panel 12 charges the energy storage battery 13 for keeping the hot water warm at night. When it is rainy or cloudy, the water can be heated by an external power supply. During the water circulation process, the hot water temperature in the circulating hot water system should be heated to 95 - 98 °C. Subsequently, the circulating fan 34 is turned on, and the cold air is heated to 85 - 90 °C through the heat exchange pipe 24 in the drying system.

[0043] Step two: Garbage feeding

[0044] The bagged garbage from the community is put into the treatment box 21 from the feeding port 26, and after being crushed by the crusher, it is sent to the multi-layer reciprocating conveyor belt 22. The crushed domestic garbage first moves under the carrying of the first-layer conveyor belt 22, and then falls into the second-layer conveyor belt 22 under the action of gravity, and so on. The crushed domestic garbage moves back and forth in the drying system.

[0045] Step three: Garbage drying

[0046] A mixing gas tank 25 is connected to the air inlet pipe 28. A certain amount of fresh air is blown into the air inlet pipe 28 by the circulating fan 34. Through the mixing gas tank 25 and the circulating fan 34, the gas flows from the air inlet pipe 28 to the air outlet pipe 29 in the sealed drying system 2, and after three-layer filtration treatment, it flows back to the air inlet pipe 28 for circulation. During the gas circulation process, the temperature and humidity sensors are used to detect the temperature of the air inlet pipe 28, as well as the temperature and humidity of the domestic garbage in real time. The air entering the treatment box 21 is heated through the heat exchange pipe 24, and the temperature of the hot air at the bottom of the treatment box 21 is controlled between 85 - 90 °C; by controlling the air inlet and outlet volumes, the temperature of the domestic garbage in the device is between 60 - 80 °C. The residence time of the crushed domestic garbage in the drying system is controlled to be 20 - 40 minutes by controlling the speed of the mesh belt conveyor 22. When the water content of the domestic garbage is lower than 10%, the drying ends, and the material outlet switch is opened, so that the dried domestic garbage in the bottommost conveyor belt 22 enters the collection system under the action of gravity for further treatment.

[0047] As Figure 2 shown, when the hot water temperature in the treatment box 21 is 95 - 98 °C and the hot air temperature is 87 - 90 °C, at this time, when treating domestic garbage with a treatment pile thickness of 8 cm and a weight of 2.3 kg, if it is necessary to dry the garbage until the water content of the garbage at the discharge port is 10%: As Figure 2 shown in the small figure a in Figure 2As shown in the small figure b in it, it takes about 31 minutes under the condition that the wind speed is 0.45 m / s; as Figure 2 As shown in the small figure c in it, it takes about 26 minutes under the condition that the wind speed is 0.55 m / s.

[0048] Step Four: Exhaust gas deodorization

[0049] The malodorous gas input into the reaction tank 31 from the treatment tank 21 first passes through the initial filtration section, effectively intercepting the moisture, dust, etc. entrained in the malodorous gas, separating them effectively, and the intercepted moisture and other components can be discharged through the drain port within a fixed time. At the same time, the gas can be evenly diffused to the cross-section of the device cavity to improve the subsequent process treatment efficiency. The pre-treated clean malodorous exhaust gas enters the photocatalytic treatment process section, C 3 N 4 / BiOIO 3 The nano-composite photocatalyst is excited to generate electron-hole pairs under visible light irradiation. The holes decompose the water adsorbed on the surface of the catalyst to generate hydroxyl radicals (-OH), and the electrons reduce the oxygen around them to oxygen anions (O 2 -), thus having extremely strong redox ability, and catalytically degrading the gas passing through the surface of the photocatalytic net; part of the malodorous gas that is not completely decomposed is adsorbed by the activated carbon, the odor is removed, and the purified gas is mixed with fresh air in the mixing tank 25, and then enters the treatment tank through the air inlet pipe 28 for heating and recycling.

[0050] Inspired by the above ideal embodiments according to the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A solar thermal collector integrated system for drying and deodorizing residential garbage, characterized in that: include, A sealed drying system (2), wherein the sealed drying system (2) is used for processing domestic waste; A heat source supply system (1), wherein the heat source supply system (1) supplies energy to the sealed drying system (2) through solar energy; The waste gas deodorization system (3) is used to treat the waste gas generated by the sealed drying system (2) and treat the waste gas so that the treated waste gas is heated and transported back to the sealed drying system (2) for reuse.

2. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 1 is characterized in that: The sealed drying system (2) comprises a treatment box (21), the treatment box (21) is provided with a feed inlet (26) and a discharge outlet (27), the bottom of the treatment box (21) is provided with a leachate outflow hole, the upper layer inside the treatment box (21) is a treatment chamber, and the lower layer is a heat exchange chamber, the discharge outlet (27) is arranged on the side wall of the treatment box (21) and is arranged close to the bottom of the treatment chamber, a plurality of conveyor belts (22) are arranged in the vertical direction inside the treatment box (21), and the plurality of conveyor belts (22) transport the garbage entering the treatment box (21) from the feed inlet (26) toward the discharge outlet (27), a heat exchange tube (24) is arranged in the heat exchange chamber, and the heat source supply system (1) is used to provide circulating hot water for the heat exchange tube (24).

3. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 2 is characterized in that: An air inlet pipe (28) is provided at the bottom of the heat exchange chamber on the treatment box (21), and an air outlet pipe (29) is provided at the top of the treatment box (21). The waste gas deodorization system (3) is connected to the treatment box (21) via the air inlet pipe (28) and the air outlet pipe (29). The air inlet pipe (28) is connected to a mixing tank (25) and a circulating fan (34), and the end of the air inlet pipe (28) is connected to the heat exchange pipe (24) in the treatment box (21).

4. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 3 is characterized in that: The waste gas deodorization system (3) comprises a reaction box (31), the air inlet pipe (28) and the air outlet pipe (29) are respectively connected to the two ends of the reaction box (31), the end of the treatment box (21) connected to the air inlet pipe (28) is the output end (33), and the end connected to the air outlet pipe (29) is the input end (32), and along the direction from the input end (32) to the output end (33), the treatment box (21) is sequentially provided with a filtering component (35), a photocatalytic reaction component (36), and a physical adsorption component (37).

5. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 4 is characterized in that: The filter section material in the filter assembly (35) is 316L alloy fiber filter material, and a water outlet is provided on the processing box (21) at a position opposite to the filter assembly (35).

6. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 4 is characterized in that: The photocatalytic reaction component (36) comprises a bracket and a light source system. The bracket is connected in the processing box (21). The bracket is arranged as a multi-layer structure along the direction from the input end (32) to the output end (33). The bracket is coated with a photocatalyst coating. The light source system is arranged in the middle of the bracket.

7. The solar thermal collector integrated system for drying and deodorizing residential garbage according to claim 1 is characterized in that: The heat source supply system (1) comprises an insulated water tank (14), a photovoltaic panel and an energy storage battery (13); the insulated water tank (14) is provided with a heating plate (16) for heating water in the insulated water tank (14); the energy storage battery (13) supplies energy to the heating plate (16); the solar photovoltaic panel (12) supplies power to the energy storage battery (13); the insulated water tank (14) is provided with a water outlet pipe (17) and a circulation pipe (18); the water outlet pipe (17) and the circulation pipe (18) are respectively connected to two ends of a heat exchange pipe (24); and the water outlet pipe (17) is connected to a circulation water pump (15).

8. A method for drying garbage using the solar thermal collector integrated system for drying and deodorizing residential garbage as claimed in any one of claims 1 to 7, characterized in that: The following steps are included: Step 1: preheating the system. The heat source supply system (1) supplies heat to the sealed drying system (2), so that the water temperature in the heat exchange tube (24) is 95-98° C. The heat exchange tube (24) heats the air in the air inlet pipe (28) to 85-90° C.; Step 2: garbage processing, the garbage enters the processing box (21), is transported layer by layer by multiple conveyor belts (22), and is discharged from the discharge port (27); Step three, waste gas deodorization, the malodorous gas in the reaction box (31) is input into the treatment box (21), and passes through the filtering component (35), the photocatalytic reaction component (36), and the physical adsorption component (37) in sequence, so as to effectively intercept the moisture, dust, etc. entrained in the malodorous gas, catalytically degrade the malodorous gas, remove the odor, and the purified gas is heated and enters the treatment box (21) through the air inlet pipe (28).

9. The method for drying garbage according to claim 8, characterized in that: The temperature at the air inlet pipe (28) of the processing box (21) is 85°C to 90°C.

Images