Distributed source full-scale treatment and resource utilization method for domestic waste based on an integrated machine for full-scale treatment and resource utilization of domestic waste

Abstract

A distributed source-based full-scale treatment and resource utilization method for domestic waste based on a full-scale treatment and resource utilization integrated machine for domestic waste belongs to the field of domestic waste treatment and resource utilization. After the domestic waste at the source is sorted, the recyclable waste is recycled and sold, the slag inert waste is used as construction waste resource utilization, and the remaining domestic waste is sent to the full-scale treatment and resource utilization integrated machine for domestic waste; the ammonia-containing clean water produced after being treated by the full-scale treatment and resource utilization integrated machine for domestic waste is used for land utilization, the ash produced is used as construction waste resource utilization, and the light oil produced is sold as oil products. The present invention can realize the source treatment of domestic waste and the resource utilization of all components, save more than 80% of transportation costs, eliminate the construction of transfer stations, waste incineration plants and landfills, save a lot of land resources, and realize the full resource utilization of domestic waste.

Description

Technical Field

[0001] The present invention belongs to the field of domestic waste treatment and resource utilization, and specifically relates to a method for distributed source full treatment and resource utilization of domestic waste based on an integrated machine for full treatment and resource utilization of domestic waste. Background Art

[0002] With the widespread application of waste incineration technology, the incineration rate of urban waste is getting higher and higher. However, in the process of expanding to small and medium-sized towns, especially to rural areas, waste incineration faces the problem of wide distribution of waste sources and high centralized collection and disposal costs. In addition, the problem of fly ash disposal generated during the waste incineration process also restricts the further development of waste incineration technology. Therefore, how to reduce the high transportation costs of centralized treatment of scattered waste and solve the problem of fly ash disposal from waste incineration are bottleneck problems that need to be solved in the field of domestic waste treatment.

[0003] At present, most of the research on the total treatment and resource utilization of domestic waste is to select the most suitable technology from the numerous domestic waste treatment technologies and conduct research on each technology. However, there is no technological innovation in the current situation of domestic waste collection-transportation-transfer-transfer-treatment and disposal, as well as solidification and landfill of fly ash from waste incineration, which is the key to the bottleneck problem in this field. The existing domestic waste treatment process needs to go through a relatively complicated process, for example: an integrated domestic waste pyrolysis incinerator, CN114151797A, the patent includes a garbage delivery chamber, a pyrolysis chamber and a combustion chamber, the pyrolysis chamber is located inside the combustion chamber, the combustion chamber is surrounded by an outer furnace wall, the pyrolysis chamber is surrounded by an inner furnace wall, the entrance of the pyrolysis chamber is connected to the entrance of the combustion chamber, the entrance of the pyrolysis chamber is connected to the garbage delivery chamber, a slag discharge port is opened at the bottom of the combustion chamber, the outlet of the pyrolysis chamber is connected to the slag discharge port, a pyrolysis gas outlet is opened on the side wall of the pyrolysis chamber, and a smoke exhaust channel is opened on the side wall of the combustion chamber; the pyrolysis gas generated by the garbage in the pyrolysis chamber enters the combustion chamber from the pyrolysis gas outlet and is mixed with the combustion-supporting air for combustion, and the heat generated is transferred to the pyrolysis chamber through the inner furnace wall to ensure that the garbage in the pyrolysis chamber is continuously pyrolyzed. However, the patent only provides a pyrolysis incinerator structure, which requires classification or drying pretreatment of domestic waste, and cannot independently achieve the purpose of full treatment and resource utilization of domestic waste. Summary of the invention

[0004] Based on the current status of domestic waste collection-transport-transfer-treatment and disposal and waste incineration fly ash solidification and landfill, the present invention develops waste source treatment and full resource utilization technology according to the composition characteristics of domestic waste, which not only greatly reduces the high waste transportation costs, but also avoids the generation and disposal of waste incineration fly ash, thereby realizing the full utilization of waste.

[0005] The technical solution of the present invention:

[0006] The method for distributed source full treatment and resource utilization of domestic waste based on the integrated machine for full treatment and resource utilization of domestic waste is as follows: after the domestic waste at the source is sorted, the recyclable waste is recycled and sold, the slag inert waste is utilized as construction waste resource, and the remaining domestic waste is sent to the integrated machine for full treatment and resource utilization of domestic waste; the ammonia-containing clean water generated after treatment by the integrated machine for full treatment and resource utilization of domestic waste is used for land utilization, the generated ash is utilized as construction waste resource, and the generated light oil is sold as oil products.

[0007] The all-in-one machine for full-scale treatment and resource utilization of domestic waste comprises a condenser, a biothermal-electric coupled drying and smoldering pyrolysis alternating reactor, a catalytic burner and an air heat exchanger.

[0008] There are two condensers, including a first condenser and a second condenser; there are more than three biothermal-electric coupling drying and smoldering pyrolysis alternating reactors.

[0009] The wet air inlet of the first condenser is connected to the wet air outlet 2 of all the biothermoelectric coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the first condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the first condenser is connected to the condensed water recycling device; the pyrolysis gas inlet of the second condenser is connected to the pyrolysis gas outlet 11 of all the biothermoelectric coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the second condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the second condenser is connected to the light oil recycling device; the gas outlet of the catalytic burner is connected to the hot flue gas inlet of the air heat exchanger, the air outlet of the air heat exchanger is connected to the air inlet 7 of the biothermoelectric coupling drying and smoldering pyrolysis alternating reactor that needs to be introduced with dry hot air, and the hot flue gas outlet of the air heat exchanger is connected to the atmosphere.

[0010] The biothermal-electric coupled drying and smoldering pyrolysis alternating reactor comprises a hopper 1, a wet air outlet 2, a vertical screw feeder 3, an air inlet 4, a spiral blade 5, a reactor shell 6, an air inlet 7, a vertical screw discharger 8, a stirring shaft 9, an external battery 10, a pyrolysis gas outlet 11, an induced draft fan 12 and an igniter 13;

[0011] The hopper 1 is arranged at the top of the vertical screw feeder 3 at the upper end of the reactor shell 6, the stirring shaft 9 is arranged at the central axis of the reactor shell 6, and the spiral blades 5 are fixedly arranged on the periphery of the stirring shaft 9. The stirring shaft 9 realizes the stirring of the material in the reactor shell 6 by driving the spiral blades 5 to rotate; the air inlet 4 and the wet air outlet 2 are both arranged at the upper part of the reactor shell 6, the pyrolysis gas outlet 11 and the air inlet 7 are both arranged at the lower part of the reactor shell 6, and the pyrolysis gas outlet 11 is connected to the induced draft fan 12; the vertical spiral discharger 8 is arranged at the bottom end of the reactor shell 6; the positive electrode of the external battery 10 is connected to the stainless steel mesh on the inner wall of the reactor shell 6, and the negative electrode is connected to the stirring shaft 9; the igniter 13 is arranged below the wet air outlet 2 or the air inlet 4, and is located in the upper middle part of the reactor shell 6.

[0012] Furthermore, the method for using the all-in-one machine for full treatment and resource recovery of domestic waste comprises the following steps:

[0013] (1) The sorted domestic waste is fed into a biothermal coupling drying and smoldering pyrolysis alternating reactor. In the biothermal coupling drying and smoldering pyrolysis alternating reactor, the feed hopper 1 is closed except for the feeding period. The domestic waste placed in the feed hopper 1 enters the reactor shell 6 through the vertical screw feeder 3. The air inlet 7 and the wet air outlet 2 are opened, and the external battery 10 is started. Dry hot air is introduced into the reactor shell 6 through the air inlet 7. The biodegradable components in the domestic waste react with the oxygen in the dry hot air to produce aerobic microbial reactions. During the aerobic microbial reaction, the external battery 10 continuously supplies power to form an electric field in the reactor shell 6 to promote the reaction of the microorganisms; the spiral blades 5 rotate intermittently to mix the domestic waste undergoing aerobic microbial reaction to make the aerobic microbial reaction uniform. The speed of the aerobic microbial reaction of the domestic waste is accelerated under the synergistic conditions of the electric field and dry hot air, and a large amount of heat is released to maintain the temperature of the aerobic microbial reaction at 55°C to 65°C. At the same time, the moisture in the domestic waste is continuously evaporated and enters the humid air flow, and is discharged from the reactor shell 6 through the humid air outlet 2.

[0014] (2) The wet air generated by the aerobic microbial reaction process enters the first condenser, and after condensation to remove most of the water, enters the catalytic combustion reactor to provide oxygen for the catalytic combustion process and burn off the small amount of odor carried. The condensed water generated by the aerobic microbial reaction process is ammonia-containing clean water, which can be used for land use after being collected by the condensed water recycling device. As the water in the domestic waste continues to evaporate and discharge, the water content in the domestic waste continues to decrease. When the water content is lower than 40%, the power supply of the external battery 10 is stopped.

[0015] (3) Continue to blow dry hot air into the biothermal coupling drying and smoldering pyrolysis alternating reactor, and the domestic waste that has been reacted by aerobic microorganisms is dried under the action of hot air until the moisture content drops below 25%. Then close the air inlet 7 and the wet air outlet 2, open the air inlet 4 and the pyrolysis gas outlet 11, start the igniter 13, ignite the domestic waste on the uppermost surface, and under the variable frequency suction action of the induced draft fan 12, the air enters the reactor shell 6 through the air inlet 4, and smolders with the domestic waste on the uppermost surface. The high-temperature flue gas generated by the smoldering reaction flows downward through the domestic waste material layer. The high-temperature flue gas causes the domestic waste adjacent to the smoldering layer to undergo gasification and pyrolysis reactions in the absence of oxygen. The volatiles generated by the gasification and pyrolysis reactions continue to flow downstream with the flue gas, and while drying the downstream domestic waste, the heavy components in the volatiles are adsorbed on the downstream domestic waste, and then undergo gasification and pyrolysis reactions again with the domestic waste to produce light components and coke, and the coke undergoes a smoldering reaction. The drying, pyrolysis, gasification and smoldering processes are carried out layer by layer inside the domestic waste until all the domestic waste has been smoldered.

[0016] (4) The light components and non-condensable gases are mixed with the flue gas and then enter the second condenser. The light components are condensed into light oil and collected and sold through the light oil recycling device. The non-condensable gas and flue gas enter the catalytic burner at the back. The non-condensable gas is catalytically burned at 300°C to 500°C. The hot flue gas generated enters the air heat exchanger for cooling and then is discharged into the atmosphere. The room temperature air is preheated by the air heat exchanger and then heated to 60°C to 70°C, providing dry hot air for the biothermal power coupling drying and smoldering pyrolysis alternating reactor that requires dry hot air.

[0017] (5) The ash produced by the smoldering in the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor is discharged and utilized as a building material resource together with the construction waste.

[0018] (6) Three or more biothermal power coupled drying and smoldering pyrolysis alternating reactors can be used alternately, and different biothermal power coupled drying and smoldering pyrolysis alternating reactors are in different reaction stages at the same time, thereby achieving full treatment and resource utilization of garbage.

[0019] Furthermore, the variable frequency air suction of the induced draft fan 12 needs to follow the principle of causing the dried garbage to undergo a smoldering reaction without generating an open flame.

[0020] Furthermore, the electric field formed in the reactor shell 6 is 0.1 V / cm to 0.15 V / cm.

[0021] Furthermore, the temperature of the aerobic microbial reaction is 58°C-65°C.

[0022] Furthermore, the temperature of the smoldering reaction is 700°C-850°C, the temperature of gasification and pyrolysis is 250°C-700°C, and the drying temperature is below 250°C.

[0023] Furthermore, the output of the ash is less than 10% of the original mass of domestic waste.

[0024] Beneficial effects of the present invention: The present invention can achieve source treatment of domestic waste and resource utilization of all components, saving more than 80% of transportation costs, eliminating the construction of transfer stations, waste incineration plants and landfills, saving a large amount of land resources, and achieving full resource utilization of domestic waste. It is particularly suitable for the treatment of domestic waste in small and medium-sized towns, remote rural areas and islands. If this technology is applied in urban communities, it will subvert the existing garbage management methods, release a large amount of valuable land resources, greatly reduce carbon emissions and traffic congestion caused by the transportation of domestic waste, and have huge ecological and environmental benefits; at the same time, it realizes the full resource utilization of garbage, with considerable economic value, and truly realizes a "waste-free community." BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the distributed source full-scale treatment and resource utilization system for domestic waste.

[0026] Figure 2 This is the process flow chart of the all-in-one machine for full treatment and resource utilization of domestic waste.

[0027] Figure 3 This is a schematic diagram of the structure of the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor device.

[0028] In the figure: 1 hopper, 2 wet air outlet, 3 vertical screw feeder, 4 air inlet, 5 spiral blade, 6 reactor shell, 7 air inlet, 8 vertical screw discharger, 9 stirring shaft, 10 external battery, 11 pyrolysis gas outlet, 12 induced draft fan, 13 igniter. DETAILED DESCRIPTION

[0029] The following will be combined with the attached Figure 1-3 The embodiments of the technical solution of the present invention are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0030] The method for distributed source full treatment and resource utilization of domestic waste based on the integrated machine for full treatment and resource utilization of domestic waste is as follows: after the domestic waste at the source is sorted, the recyclable waste is recycled and sold, the slag inert waste is utilized as construction waste resource, and the remaining domestic waste is sent to the integrated machine for full treatment and resource utilization of domestic waste; the ammonia-containing clean water generated after treatment by the integrated machine for full treatment and resource utilization of domestic waste is used for land utilization, the generated ash is utilized as construction waste resource, and the generated light oil is sold as oil products.

[0031] An integrated machine for the full treatment and resource utilization of domestic waste, the integrated machine for the full treatment and resource utilization of domestic waste comprises a condenser, a biothermal-electric coupled drying and smoldering pyrolysis alternating reactor, a catalytic burner and an air heat exchanger.

[0032] There are two condensers, including a first condenser and a second condenser; there are three biothermoelectric coupling drying and smoldering pyrolysis alternating reactors, including a first biothermoelectric coupling drying and smoldering pyrolysis alternating reactor, a second biothermoelectric coupling drying and smoldering pyrolysis alternating reactor, and a third biothermoelectric coupling drying and smoldering pyrolysis alternating reactor.

[0033] The wet air inlet of the first condenser is connected to the wet air outlet 2 of all the biothermoelectric coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the first condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the first condenser is connected to the condensed water recycling device; the pyrolysis gas inlet of the second condenser is connected to the pyrolysis gas outlet 11 of all the biothermoelectric coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the second condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the second condenser is connected to the light oil recycling device; the gas outlet of the catalytic burner is connected to the hot flue gas inlet of the air heat exchanger, the air outlet of the air heat exchanger is connected to the air inlet 7 of the biothermoelectric coupling drying and smoldering pyrolysis alternating reactor that needs to be introduced with dry hot air, and the hot flue gas outlet of the air heat exchanger is connected to the atmosphere.

[0034] The biothermal-electric coupled drying and smoldering pyrolysis alternating reactor comprises a hopper 1, a wet air outlet 2, a vertical screw feeder 3, an air inlet 4, a spiral blade 5, a reactor shell 6, an air inlet 7, a vertical screw discharger 8, a stirring shaft 9, an external battery 10, a pyrolysis gas outlet 11, an induced draft fan 12 and an igniter 13;

[0035] The hopper 1 is arranged at the top of the vertical screw feeder 3 at the upper end of the reactor shell 6, the stirring shaft 9 is arranged at the central axis of the reactor shell 6, and the spiral blades 5 are fixedly arranged on the periphery of the stirring shaft 9. The stirring shaft 9 realizes the stirring of the material in the reactor shell 6 by driving the spiral blades 5 to rotate; the air inlet 4 and the wet air outlet 2 are both arranged at the upper part of the reactor shell 6, the pyrolysis gas outlet 11 and the air inlet 7 are both arranged at the lower part of the reactor shell 6, and the pyrolysis gas outlet 11 is connected to the induced draft fan 12; the vertical spiral discharger 8 is arranged at the bottom end of the reactor shell 6; the positive electrode of the external battery 10 is connected to the stainless steel mesh on the inner wall of the reactor shell 6, and the negative electrode is connected to the stirring shaft 9; the igniter 13 is arranged below the wet air outlet 2 or the air inlet 4, and is located in the upper middle part of the reactor shell 6.

[0036] The wet air outlet 2 and the air inlet 7 are centrally symmetrically distributed, and the air inlet 4 and the pyrolysis gas outlet 11 are centrally symmetrically distributed. The stirring shaft 9 is made of stainless steel.

[0037] The vertical screw feeder 3, reactor shell 6, and vertical screw discharger 8 are respectively set as section A, section B, and section C. The diameters of sections A and C are one-third of the diameter of section B. The parts of sections A and C that transition to section B are both hemispherical.

[0038] The induced draft fan 12 is a variable frequency pulse induced draft fan.

[0039] The method of using the above-mentioned all-in-one machine for treating and recycling domestic waste is as follows:

[0040] (1) The sorted domestic waste in a community in a city was sent into the first biothermal coupling drying and smoldering pyrolysis alternating reactor after a certain period of time. In the biothermal coupling drying and smoldering pyrolysis alternating reactor, the feed hopper 1 was closed except for the feeding period. The domestic waste placed in the feed hopper 1 entered the reactor shell 6 through the vertical screw feeder 3. The air inlet 7 and the wet air outlet 2 were opened, and the external battery 10 was started. Dry hot air was introduced into the reactor shell 6 through the air inlet 7. The biodegradable components in the domestic waste reacted with the oxygen in the dry hot air to produce aerobic microbial reactions. The temperature of the aerobic microbial reaction was 60°C. During the aerobic microbial reaction, the external battery 10 continuously supplied power with a supply current of 0.1 V / cm. An electric field is formed in the reactor shell 6 to promote the reaction of microorganisms; the spiral blades 5 rotate intermittently to mix the domestic waste undergoing aerobic microbial reaction to make the aerobic microbial reaction uniform. The speed of the aerobic microbial reaction of the domestic waste is accelerated under the synergistic conditions of the electric field and dry hot air, and a large amount of heat is released to maintain the temperature of the aerobic microbial reaction at around 60°C. At the same time, the moisture in the domestic waste is continuously evaporated and enters the humid air flow, and is discharged from the reactor shell 6 through the humid air outlet 2.

[0041] (2) The wet air generated by the aerobic microbial reaction process enters the first condenser, and after condensation to remove most of the water, enters the catalytic combustion reactor to provide oxygen for the catalytic combustion process and burn off the small amount of odor carried. The condensed water generated by the aerobic microbial reaction process is ammonia-rich clean water, which can be used for greening after being collected by the condensed water recycling device. As the water in the domestic waste continues to evaporate and discharge, the water content in the domestic waste continues to decrease. When the water content is lower than 40%, the power supply of the external battery 10 is stopped.

[0042] (3) Continue to blow dry hot air into the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor, and the domestic waste that has been reacted by aerobic microorganisms is dried under the action of hot air until the moisture content drops below 25%. Then close the air inlet 7 and the wet air outlet 2, open the air inlet 4 and the pyrolysis gas outlet 11, start the igniter 13, ignite the domestic waste on the uppermost surface, and under the variable frequency suction action of the induced draft fan 12, the air enters the reactor shell 6 through the air inlet 4, and smolders with the domestic waste on the uppermost surface. The temperature of the smoldering reaction is 850°C. The high-temperature flue gas generated by the smoldering reaction flows downward through the domestic waste material layer. The high-temperature flue gas causes the domestic waste adjacent to the smoldering layer to undergo gasification and pyrolysis reactions in the absence of oxygen. The volatiles generated by the gasification and pyrolysis reactions continue to flow downstream with the flue gas, and while drying the downstream domestic waste, the heavy components in the volatiles are adsorbed on the downstream domestic waste, and then undergo gasification and pyrolysis reactions again with the domestic waste to produce light components and coke, and the coke undergoes a smoldering reaction. The drying, pyrolysis, gasification and smoldering processes are carried out layer by layer inside the domestic waste until all the domestic waste has been smoldered.

[0043] (4) The light components and non-condensable gases are mixed with the flue gas and then enter the second condenser. The light components are condensed into light oil and collected and sold through the light oil recycling device. The non-condensable gas and flue gas enter the catalytic burner at the back. The non-condensable gas is catalytically burned at about 400°C. The hot flue gas generated enters the air heat exchanger for cooling and is then discharged into the atmosphere. The room temperature air is preheated by the air heat exchanger and heated to 60°C to 70°C, providing dry hot air for the second biothermoelectric coupled drying and smoldering pyrolysis alternating reactor and the third biothermoelectric coupled drying and smoldering pyrolysis alternating reactor.

[0044] (5) The ash produced by the smoldering in the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor is discharged and utilized as a building material resource together with the construction waste.

[0045] (6) The three biothermal-electric coupled drying and smoldering pyrolysis alternating reactors can be used alternately to meet the domestic waste treatment capacity of 3 to 5 days. The reaction time after the domestic waste is filled is about 3 to 5 days. After the first biothermal-electric coupled drying and smoldering pyrolysis alternating reactor is filled with waste, the feed hopper 1 is closed to continue the subsequent reaction. The second biothermal-electric coupled drying and smoldering pyrolysis alternating reactor continues to load waste. After the second biothermal-electric coupled drying and smoldering pyrolysis alternating reactor is filled, the third biothermal-electric coupled drying and smoldering pyrolysis alternating reactor continues to load waste. This cycle repeats, and different biothermal-electric coupled drying and smoldering pyrolysis alternating reactors are in different reaction stages at the same time, achieving full waste treatment and resource utilization.

[0046] Economic calculation: The full-caliber cost of urban domestic waste management in my country is 700-2200 yuan / ton, which varies from town to town according to the different levels of urban development and different stages of development. The collection process, transfer and transportation costs and land resource costs are high, and the technical method proposed in this invention can greatly reduce the transfer and transportation costs and land resource costs. Even if the investment at the source is increased a lot, the full-caliber cost should be reduced by more than 30%. If the benefits of carbon emission reduction are taken into account, its economic benefits are even more considerable.

[0047] While solving the problem of distributed treatment of domestic waste, it has achieved full treatment and resource utilization of domestic waste at the source of waste generation, greatly reduced the amount of waste transportation, and saved a large amount of precious land resources occupied by transfer stations and waste treatment plants, greatly improving the economic, environmental and social benefits of domestic waste management.

Claims

1. A method for distributing the full amount of domestic waste at the source and recycling it based on a domestic waste full amount treatment and recycling machine, characterized in that: Specifically: after the domestic waste at the source is sorted, the recyclable waste will be recycled and sold, the slag inert waste will be recycled as construction waste, and the remaining domestic waste will be sent to the domestic waste full-scale treatment and resource-recycling integrated machine; The ammonia-containing clean water produced after the full treatment of domestic waste and the resource recovery integrated machine is used for land utilization, the ash produced is used for construction waste resource utilization, and the light oil produced is sold as oil products; The all-in-one machine for full treatment and resource utilization of domestic waste includes a condenser, a biothermal-electric coupled drying and smoldering pyrolysis alternating reactor, a catalytic burner and an air heat exchanger; There are two condensers, including a first condenser and a second condenser; there are more than three biothermal-electric coupling drying and smoldering pyrolysis alternating reactors; The wet air inlet of the first condenser is connected to the wet air outlets (2) of all the biothermal power coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the first condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the first condenser is connected to the condensed water recycling device; the pyrolysis gas inlet of the second condenser is connected to the pyrolysis gas outlets (11) of all the biothermal power coupling drying and smoldering pyrolysis alternating reactors, the gas outlet of the second condenser is connected to the gas inlet of the catalytic burner, and the liquid outlet of the second condenser is connected to the light oil recycling device; the gas outlet of the catalytic burner is connected to the hot flue gas inlet of the air heat exchanger, the air outlet of the air heat exchanger is connected to the air inlet (7) of the biothermal power coupling drying and smoldering pyrolysis alternating reactor that needs to be fed with dry hot air, and the hot flue gas outlet of the air heat exchanger is connected to the atmosphere; The biothermal-electric coupled drying and smoldering pyrolysis alternating reactor comprises a hopper (1), a wet air outlet (2), a vertical screw feeder (3), an air inlet (4), a spiral blade (5), a reactor shell (6), an air inlet (7), a vertical screw discharger (8), a stirring shaft (9), an external battery (10), a pyrolysis gas outlet (11), an induced draft fan (12) and an igniter (13); The hopper (1) is arranged at the top of a vertical screw feeder (3) at the upper end of a reactor shell (6); the stirring shaft (9) is arranged at the central axis of the reactor shell (6); a spiral blade (5) is fixedly arranged on the outer periphery of the stirring shaft (9); the stirring shaft (9) stirs the material in the reactor shell (6) by driving the spiral blade (5) to rotate; the air inlet (4) and the wet air outlet (2) are both arranged at the upper part of the reactor shell (6); the pyrolysis gas outlet (11) and the air inlet (7) are both arranged at the lower part of the reactor shell (6), and the pyrolysis gas outlet (11) is connected to the induced draft fan (12); the vertical spiral discharger (8) is arranged at the bottom end of the reactor shell (6); the positive electrode of the external battery (10) is connected to the stainless steel mesh on the inner wall of the reactor shell (6), and the negative electrode is connected to the stirring shaft (9); the igniter (13) is arranged below the wet air outlet (2) or the air inlet (4), and is located in the upper middle part of the reactor shell (6).

2. The method for distributed source full treatment and resource utilization of domestic waste based on a domestic waste full treatment and resource utilization integrated machine according to claim 1 is characterized in that: The method for using the all-in-one machine for full treatment and resource recovery of domestic waste is as follows: S1: The sorted domestic waste is fed into a biothermal-electric coupled drying and smoldering pyrolysis alternating reactor. In the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor, the feed hopper (1) is closed except during the feeding period. The domestic waste placed in the feed hopper (1) enters the reactor shell (6) through a vertical screw feeder (3); The air inlet (7) and the wet air outlet (2) are opened, and the external battery (10) is started. Dry hot air is introduced into the reactor shell (6) through the air inlet (7), and the biodegradable components in the domestic waste react with the oxygen in the dry hot air to form an aerobic microbial reaction. During the aerobic microbial reaction, the external battery (10) continuously supplies power, and an electric field is formed in the reactor shell (6) to promote the microbial reaction. The spiral blade (5) rotates intermittently to mix the domestic waste undergoing aerobic microbial reaction, so as to make the aerobic microbial reaction uniform. The speed of the aerobic microbial reaction of the domestic waste is accelerated under the synergistic conditions of the electric field and the dry hot air, and a large amount of heat is released to maintain the temperature of the aerobic microbial reaction at 55°C to 65°C. At the same time, the moisture in the domestic waste is continuously evaporated and enters the wet air flow, and is discharged from the reactor shell (6) through the wet air outlet (2); S2: The wet air generated by the aerobic microbial reaction process enters the first condenser, and after being condensed to remove most of the water, enters the catalytic combustion reactor to provide oxygen for the catalytic combustion process and burn off the small amount of odor carried; the condensed water generated by the aerobic microbial reaction process is ammonia-containing clean water, which is collected by the condensed water recycling device and used for land utilization; as the water in the domestic waste is continuously evaporated and discharged, the water content in the domestic waste continues to decrease. When the water content is lower than 40%, the power supply of the external battery (10) is stopped; S3: Continue to blow dry hot air into the biothermal coupling drying and smoldering pyrolysis alternating reactor, and dry the domestic waste that has been reacted by aerobic microorganisms under the action of hot air until the moisture content drops below 25%; then close the air inlet (7) and the wet air outlet (2), open the air inlet (4) and the pyrolysis gas outlet (11), start the igniter (13), ignite the domestic waste on the uppermost surface, and under the variable frequency suction action of the induced draft fan (12), the air enters the reactor shell (6) through the air inlet (4), and smolders with the domestic waste on the uppermost surface. The smoldering reaction The generated high-temperature flue gas flows downward through the domestic waste material layer. In the absence of oxygen, the high-temperature flue gas causes the domestic waste adjacent to the smoldering layer to undergo gasification and pyrolysis reactions. The volatiles produced by the gasification and pyrolysis reactions continue to flow downstream along with the flue gas, drying the downstream domestic waste while the heavy components in the volatiles are adsorbed on the downstream domestic waste, and then undergo gasification and pyrolysis reactions again with the domestic waste to produce light components and coke, which then undergoes a smoldering reaction. The drying, pyrolysis, gasification and smoldering processes are carried out layer by layer inside the domestic waste until the smoldering reaction of all the domestic waste ends. S4: The light components and non-condensable gas are mixed with the flue gas and enter the second condenser. The light components are condensed into light oil and collected and sold through the light oil recycling device; the non-condensable gas and the flue gas enter the catalytic burner at the back, and the non-condensable gas is catalytically burned at 300°C to 500°C. The hot flue gas generated enters the air heat exchanger for cooling and then is discharged into the atmosphere. The room temperature air is preheated by the air heat exchanger and heated to 60°C to 70°C, providing dry hot air for the biothermoelectric coupled drying and smoldering pyrolysis alternating reactor that needs to be fed with dry hot air; S5: The ash produced by the smoldering in the biothermal-electric coupled drying and smoldering pyrolysis alternating reactor is discharged and recycled as building materials together with the construction waste; S6: More than three bio-thermal power coupling drying and smoldering pyrolysis alternating reactors can be used alternately, and different bio-thermal power coupling drying and smoldering pyrolysis alternating reactors are in different reaction stages at the same time, realizing full treatment and resource utilization of garbage.

3. The method for distributed source full treatment and resource utilization of domestic waste based on a domestic waste full treatment and resource utilization integrated machine according to claim 1 is characterized in that: The variable frequency air suction of the induced draft fan (12) needs to follow the principle of causing the dried garbage to undergo a smoldering reaction without generating an open flame.

4. The method for distributed source full-scale treatment and resource utilization of domestic waste based on a domestic waste full-scale treatment and resource utilization integrated machine according to claim 1 is characterized in that: The electric field formed in the reactor shell (6) is 0.1 V / cm to 0.15 V / cm.

5. The method for distributed source full treatment and resource utilization of domestic waste based on a domestic waste full treatment and resource utilization integrated machine according to claim 2 is characterized in that: The temperature of the aerobic microbial reaction is 58°C-65°C.

6. The method for distributed source full treatment and resource utilization of domestic waste based on a domestic waste full treatment and resource utilization integrated machine according to claim 2 is characterized in that: The temperature of the smoldering reaction is 700°C-850°C, the temperature of gasification and pyrolysis is 250°C-700°C, and the temperature of drying is below 250°C.

7. The method for distributed source full treatment and resource utilization of domestic waste based on a domestic waste full treatment and resource utilization integrated machine according to claim 1 is characterized in that: The output of the ash is less than 10% of the original mass of domestic waste.

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