Treatment system for preparing RDF (Refuse Derived Fuel) from household garbage and solid wastes

Abstract

The embodiment of the invention provides a treatment system for preparing RDF fuel from household garbage and solid waste. The treatment system comprises a garbage storage pool, first crushing equipment, screening equipment, magnetic separation equipment, winnowing equipment, a fuel bin and odor treatment equipment. The garbage storage pool is used for storing household garbage and solid waste; wherein the odor treatment equipment is used for carrying out deodorization treatment on generated odor; the first crushing equipment is used for crushing household garbage and solid waste in the garbage storage pool; the screening equipment is used for screening the crushed garbage materials; the magnetic separation equipment is used for carrying out magnetic separation treatment on the screened materials; the winnowing equipment is used for carrying out winnowing treatment on the materials subjected to magnetic separation treatment; and the fuel bin is used for storing the materials subjected to magnetic separation and / or air separation as RDF fuel.

Description

Technical Field

[0001] The embodiments of the present disclosure belong to the technical field of garbage treatment, and specifically relate to a processing system for preparing RDF fuel using domestic garbage and solid waste. Background Art

[0002] Solid waste (SWD) refers to solid, semi-solid and gaseous items and substances in containers that have lost their original utilization value or have not lost their utilization value but have been discarded or abandoned in the production, life and other activities, as well as items and substances that are included in the solid waste management according to laws and administrative regulations.

[0003] In recent years, various polymer synthetic materials, various packaging materials, printed materials, and plastic products have been used in large quantities. The composition of urban garbage in my country has also changed greatly, which has brought challenges to the selection and improvement of garbage treatment methods: with the increase in the content of organic components in garbage, the garbage entering the landfill is becoming more and more difficult to degrade, and the COD value of the leachate is getting higher and higher, causing serious pollution to the nearby surface water, groundwater, soil, and atmosphere. It will also occupy a large amount of non-renewable land resources and affect the urban landscape. Incineration treatment will produce many harmful gases. The increase in the content of kitchen waste in domestic garbage leads to a higher water content in garbage. The combustion of garbage consumes a lot of energy, which also causes a series of adverse effects such as waste of recyclable resources. For the treatment of urban domestic garbage, we must take into account my country's national conditions and follow the treatment principles of "reduction, harmlessness, and resource utilization". The organic content of urban domestic garbage is high and has a large recycling value. "Resource utilization" is imperative.

[0004] There is huge resource potential in urban solid waste and domestic garbage. In my country, in addition to kitchen waste and inorganic waste such as bricks and soil, paper, plastic, rubber, cloth, wood and bamboo, glass and metal are all recyclable solid waste. In most cities, 30%-40% of solid waste and domestic garbage can be recycled.

[0005] In order to better achieve sustainable development, environmental protection efforts continue to increase, and the efficient treatment of urban solid waste and domestic garbage is becoming more and more urgent. At the same time, the requirements for harmless treatment and resource utilization of garbage are also higher. Summary of the invention

[0006] The embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art and provide a processing system for preparing RDF fuel using domestic garbage and solid waste.

[0007] In one aspect of an embodiment of the present disclosure, a processing system for preparing RDF fuel using domestic garbage and solid waste is provided, the processing system comprising a garbage storage tank, a first crushing device, a screening device, a magnetic separation device, an air separation device, a fuel silo and an odor treatment device; the garbage storage tank is used to store domestic garbage and solid waste;

[0008] Among them, the odor treatment equipment is used to deodorize the generated odor; the first crushing equipment is used to crush the domestic garbage and solid waste in the garbage storage pool; the screening equipment is used to screen the crushed garbage materials; the magnetic separation equipment is used to magnetically separate the screened materials; the air separation equipment is used to air separate the materials after magnetic separation; the fuel bin is used to store the materials separated by magnetic separation and / or air separation as RDF fuel.

[0009] Optionally, the odor treatment equipment includes a spray device and a sealed air curtain device arranged corresponding to the garbage storage tank;

[0010] The spray device is used to spray dust reduction and deodorization treatment on the odor and dust generated in the unloading and storage areas of the garbage storage tank; the sealed air curtain device is used to form an airflow barrier in the unloading and storage areas of the garbage storage tank to prevent the odor from overflowing.

[0011] Optionally, the odor treatment equipment further comprises an exhaust device, which is disposed in a discharge and storage area of ​​the garbage storage tank and is used to collect the generated odor and transport it to the spray device.

[0012] Optionally, the exhaust device includes an air collecting hood and a centrifugal fan. The air collecting hood is arranged in the unloading and storage area of ​​the garbage storage tank to collect odor and dust; the centrifugal fan is arranged at the air collecting port of the air collecting hood to transport the odor and dust to the spray device.

[0013] Furthermore, it also includes: a leachate collection system, which is arranged in the garbage storage tank, and the leachate collection system is used to collect the garbage leachate in the garbage storage tank and transport it to the leachate treatment station.

[0014] Optionally, the leachate collection system includes a grille door, a leachate pool and a leachate pump; wherein the garbage leachate flows into the leachate pool through the grille door, and is pumped to the leachate treatment station through the leachate pump connected to the leachate pool.

[0015] Optionally, the sieve hole size of the screening equipment is 20mm-80mm, which is used to screen out materials with a crushing size of 20mm-80mm.

[0016] Optionally, the magnetic separation equipment includes a first magnetic separator, a second magnetic separator and a third magnetic separator; the wind separation equipment includes a first wind separator and a second wind separator; the first wind separator is arranged correspondingly to the first magnetic separator, and the second wind separator is arranged correspondingly to the second magnetic separator;

[0017] Wherein, the first magnetic separator is used to perform magnetic separation on materials with a crushing size of 80 mm or more, and the first air separator is used to perform air separation on the materials after magnetic separation;

[0018] The second magnetic separator is used to perform magnetic separation on materials with a crushing size between 20 mm and 80 mm, and the second air separator is used to process the materials after magnetic separation;

[0019] The third magnetic separator is used to perform magnetic separation on materials with a crushing size of less than 20 mm, and store the magnetically separated materials in the fuel bin.

[0020] Furthermore, it also includes: a second crushing device and a third crushing device, wherein the second crushing device is arranged correspondingly to the first air separator, and the third crushing device is arranged correspondingly to the second air separator;

[0021] The second crushing equipment is used to crush the light materials in the materials selected by the first air separator, and the third crushing equipment is used to crush the heavy materials in the materials selected by the second air separator.

[0022] Furthermore, it also includes: a temporary storage bin and a drying device; the temporary storage bin is used to store the materials magnetically separated by the third magnetic separator, and the materials crushed by the third crushing equipment; the drying device is arranged between the temporary storage bin and the fuel bin, and is used to dry the materials transferred from the temporary storage bin to the fuel bin.

[0023] The beneficial effects of the embodiments of the present disclosure include:

[0024] The system for treating domestic garbage and solid waste provided by the present disclosure can reduce the pollution of odor to the environment during the garbage treatment process and realize the harmless treatment of garbage. In addition, through the multi-stage screening of screening equipment, magnetic separation equipment and wind separation equipment, not only can domestic garbage and solid waste be used to prepare RDF fuel, but metal materials can also be screened out, thereby improving the utilization rate of domestic garbage. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic block diagram of the structure of a processing system for preparing RDF fuel using domestic garbage and solid waste according to an embodiment of the present disclosure;

[0026] Figure 2This is a schematic block diagram of a processing system for preparing RDF fuel using domestic garbage and solid waste according to another embodiment of the present disclosure;

[0027] Figure 3 This is a schematic block diagram of a garbage treatment process of a treatment system for preparing RDF fuel using domestic garbage and solid waste according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present disclosure, the present disclosure is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0029] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions and drawings of the following examples are used to illustrate the principles of the present application, but cannot be used to limit the scope of the present application, that is, the present application is not limited to the described embodiments. In the description of the present application, it should be noted that, unless otherwise specified, the meaning of "multiple" is more than two; the orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "inside", "outside", etc. is only for the convenience of describing the present application 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 cannot be understood as a limitation on the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the error tolerance range. "Parallel" is not parallel in the strict sense, but within the error tolerance range.

[0030] In the description of this application, it should also 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 can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0031] RDF fuel, the full name of which is Refuse Derived Fuel, is a fuel made by crushing, sorting, drying, adding reagents, and compressing combustible waste. This fuel has many advantages, such as high calorific value, stable combustion, easy transportation and storage, and environmental protection, and has a wide range of applications.

[0032] like Figure 1As shown, a processing system for preparing RDF fuel using domestic garbage and solid waste, the processing system includes a garbage storage tank, a first crushing device, a screening device, a magnetic separation device, an air separation device, a fuel bin and an odor treatment device, and the garbage storage tank is used to store domestic garbage and solid waste.

[0033] Among them, the odor treatment equipment is used to deodorize the generated odor, the first crushing equipment is used to crush the domestic garbage and solid waste in the garbage storage pool, the screening equipment is used to screen the crushed garbage materials, the magnetic separation equipment is used to magnetically separate the screened materials, the air separation equipment is used to air separate the magnetically separated materials, and the fuel bin is used to store the magnetically separated and / or air-separated materials as RDF fuel.

[0034] The system for treating domestic garbage and solid waste provided by the present disclosure can reduce the pollution of odor to the environment during the garbage treatment process and realize the harmless treatment of garbage. In addition, through the multi-stage screening of screening equipment, magnetic separation equipment and wind separation equipment, not only can domestic garbage and solid waste be used to prepare RDF fuel, but metal materials can also be screened out, thereby improving the utilization rate of domestic garbage.

[0035] In some embodiments, the odor treatment equipment includes a spray device and a sealed air curtain device arranged corresponding to the garbage storage tank. The spray device is used to spray dust reduction and deodorization treatment on the odor and dust generated in the unloading and storage areas of the garbage storage tank, and the sealed air curtain device is used to form an airflow barrier in the unloading and storage areas of the garbage storage tank to prevent the odor from overflowing.

[0036] In some embodiments, the odor treatment equipment further includes an exhaust device, which is disposed in the unloading and storage area of ​​the garbage storage tank and is used to collect the generated odor and transport it to the spray device.

[0037] In some embodiments, the exhaust device includes an air collecting hood and a centrifugal fan, wherein the air collecting hood is arranged in the unloading and storage area of ​​the garbage storage tank to collect odor and dust, and the centrifugal fan is arranged at the air collecting port of the air collecting hood to transport the odor and dust to the spray device.

[0038] In some embodiments, the treatment system further includes a leachate collection system, which is disposed in the garbage storage tank. The leachate collection system is used to collect the garbage leachate in the garbage storage tank and transport it to the leachate treatment station.

[0039] refer to Figure 2 In some embodiments, the leachate collection system includes a grille door, a leachate pool and a leachate pump, wherein the garbage leachate flows into the leachate pool through the grille door and is pumped to the leachate treatment station by the leachate pump connected to the leachate pool.

[0040] In some embodiments, the sieve hole size of the screening device is 20 mm-80 mm, and is used to screen out materials with a crushing size of 20 mm-80 mm. In some embodiments, the screening device is a double-stage multi-angle disc screen.

[0041] In some embodiments, the magnetic separation device includes a first magnetic separator, a second magnetic separator, and a third magnetic separator. The wind separation device includes a first wind separator and a second wind separator. The first wind separator is arranged correspondingly to the first magnetic separator, and the second wind separator is arranged correspondingly to the second magnetic separator.

[0042] The first magnetic separator is used to magnetically separate materials with a crushing size of more than 80 mm, and the first air separator is used to air separate the materials after magnetic separation. The second magnetic separator is used to magnetically separate materials with a crushing size between 20 mm and 80 mm, and the second air separator is used to process the materials after magnetic separation. The third magnetic separator is used to magnetically separate materials with a crushing size of less than 20 mm, and store the magnetically separated materials in the fuel bin.

[0043] In some embodiments, the processing system further includes a second crushing device and a third crushing device, wherein the second crushing device is arranged corresponding to the first air separator, and the third crushing device is arranged corresponding to the second air separator. The second crushing device is used to crush the light materials among the materials selected by the first air separator, and the third crushing device is used to crush the heavy materials among the materials selected by the second air separator.

[0044] In some embodiments, the first crushing device is a coarse crusher, and the second crushing device and the third crushing device are both fine crushers.

[0045] In some embodiments, the processing system further includes a temporary storage bin and a drying device. The temporary storage bin is used to store the materials magnetically separated by the third magnetic separator and the materials crushed by the third crushing device. The drying device is arranged between the temporary storage bin and the fuel bin, and is used to dry the materials transferred from the temporary storage bin to the fuel bin.

[0046] like Figure 3 As shown, the present disclosure provides an embodiment, including: garbage (including domestic garbage and solid waste) transported by a garbage truck is sequentially subjected to component spot check-ground scale-unloading platform, and then put into a garbage storage pool, and a grab bucket is used to grab the garbage in the garbage storage pool and take it to a coarse crusher for crushing, and a double-stage multi-angle disc screen is used to screen the material obtained by the coarse crusher to screen out material with a crushing size of 20mm-80mm.

[0047] The first magnetic separator is used to perform magnetic separation on the material above the 80mm sieve, and the metal separated by the magnetic separation is stored in the metal material bin. The first air separator performs air separation on the material after magnetic separation, and separates heavy materials and light materials by air separation. Among them, the heavy materials are sorted to the landfill material bin through the manual sorting platform, and the heavy materials include bricks, tiles, ceramics, etc. The fine crusher crushes the light materials and stores the crushed materials as RDF fuel in the fuel bin.

[0048] Furthermore, the fine crusher corresponding to the second air separator further crushes the manually sorted organic matter and plastic bottles, etc., and stores the crushed materials in a temporary storage bin.

[0049] The second magnetic separator is used to perform magnetic separation on materials between 20mm and 80mm, and the metals separated by magnetic separation are stored in the metal material bin. The second air separator performs air separation on the materials separated by magnetic separation, and separates heavy materials and light materials by air separation. The heavy materials are crushed by the fine crusher corresponding to the second air separator, and the crushed materials are stored in the temporary storage bin, while the light materials are stored in the fuel bin as RDF fuel.

[0050] The third magnetic separator is used to magnetically separate the material under the 20mm sieve. The magnetically separated metal is stored in the metal material bin, and the remaining material is stored in the temporary storage bin. The material in the temporary storage bin is sequentially treated with leachate, odor and dried by drying equipment before being stored in the fuel bin.

[0051] The present disclosure provides a system for treating domestic garbage and solid waste, which reduces the pollution of the environment caused by odor and leaching liquid during the garbage treatment process. In addition, through multi-stage screening of multi-angle disc screen, magnetic separator and air separator, not only can domestic garbage and solid waste be used to prepare RDF fuel, but also metal materials and landfill materials can be screened out, thereby improving the utilization rate of domestic garbage.

[0052] The present disclosure provides a processing system for preparing RDF fuel using domestic garbage and solid waste. The system utilizes garbage crushing, screening, magnetic separation and air separation as well as garbage drying processing technology to efficiently separate and obtain valuable metals. Light plastics, paper and low-water content organic matter can be used as raw materials for incinerators or gasifiers. Heavy bricks, tiles, ceramics and other materials are collected and transported out and can be used as landfill materials.

[0053] Another specific example provided by the present disclosure is a method for preparing RDF fuel using domestic garbage and solid waste, the method comprising the following four parts:

[0054] 1. Garbage feeding;

[0055] 2. Garbage sorting;

[0056] 3. Odor treatment;

[0057] 4. Penetrant treatment.

[0058] (1) Garbage feeding, as follows:

[0059] Conduct random checks on the composition of garbage to prevent industrial and medical waste from entering the treatment system. Set up an inspection platform on the roadside in front of the entrance to the weighbridge, equipped with specialized personnel and necessary tools and instruments. Set up a vehicle inspection sign in front of the inspection platform. If the inspector deems the garbage truck suspicious, he can direct it to enter the inspection area for inspection.

[0060] Garbage (domestic garbage and solid waste) that meets the requirements for entering the garbage sorting site is weighed by the garbage truck and then unloaded on the unloading platform into the garbage storage pool for stacking. The garbage is initially drained in the storage pool, and the leachate enters the leachate collection system. The odor and dust are led to the odor treatment equipment by the exhaust device for treatment. The garbage storage pool is also equipped with a spray device to spray dust reduction and deodorization treatment on odor and dust to avoid odor and dust pollution of the environment. Among them, the garbage in the garbage storage pool is sent to the feed port of the coarse crusher through the crane grab, and the garbage falls into the coarse crusher for preliminary bag breaking and crushing.

[0061] (2) Garbage sorting, as follows:

[0062] The garbage that has been roughly crushed by the coarse crusher (crushing size 250mm) is sent by the conveyor belt to the two-stage polygonal disc screen (screen size is 20mm and 80mm) for screening. The 80mm screen material after screening is first sorted out by the first magnetic separator to remove the metal, and then separated by the positive pressure drum air separator (first air separator) to separate the light and heavy materials. The light materials are further crushed by the fine crusher (crushing size 80mm) and sent to the fuel bin, which can be directly used as fuel for the incinerator or raw material for the gasifier. The heavy materials are transported to the manual sorting platform for sorting, and large pieces of bricks, tiles, ceramics, glass bottles, etc. are sorted out, which can be transported out of the factory as landfill materials. The remaining other materials can be crushed by the fine crusher corresponding to the second air separator and stored in the temporary storage bin, and the materials in the temporary storage bin are sent to the fuel bin as fuel after drying.

[0063] The materials under the sieve that are smaller than 20mm are mainly small pieces of kitchen waste and sand. After the metals are picked out by the third magnetic separator, they are directly sent to the temporary storage bin. Subsequently, they are dried by the drying equipment to reduce the moisture content and transported to the fuel bin. They can also be used as raw materials for the gasifier.

[0064] The 20mm-80mm undersize material is sorted out of metals by the second magnetic separator, and is also separated into light and heavy materials by the positive pressure drum air separator (second air separator). The light materials are transported to the fuel bin (together with the 80mm oversize light materials after fine crushing, sharing the fine crusher discharge belt), and can be directly used as fuel for the incinerator or raw material for the gasifier. The heavy materials are first crushed (30mm-60mm) by the fine crusher corresponding to the second air separator together with the 80mm oversize heavy materials remaining after manual sorting, and then transported to the temporary storage bin, and then dehydrated and dried by the drying equipment. After drying, they are transported to the fuel bin and can be used as fuel for the incinerator or raw material for the gasifier. Among them, another magnetic separation can be added before fine crushing to ensure the normal operation of the fine crusher and subsequent drying equipment.

[0065] (3) Odor treatment, as follows:

[0066] Exhaust devices are installed at places where odor is generated during the garbage sorting process to directly extract the odor and send it to the odor treatment equipment.

[0067] A spray device is installed in the unloading and storage area of ​​the garbage storage pool to first spray dust reduction and deodorize the odor and dust generated during the garbage unloading and storage process, and a sealed air curtain device is installed to prevent the odor from overflowing.

[0068] Exhaust devices are installed at the odor emission points in the sorting workshop, and gas collecting hoods and gas collecting ports are arranged at key odor emission points. The gas is transported to the odor treatment equipment by dust removal centrifugal fans for treatment, and the emissions meet the national emission standards.

[0069] (4) Permeate treatment

[0070] The garbage storage tank is equipped with a leachate collection system. The bottom of the garbage storage tank has a slope of no less than 2% in the width direction and at both ends, sloping towards the garbage gate. The side wall of the storage tank is equipped with a grating door, so that the garbage leachate flows through the grating to the leachate ditch and then into the leachate tank. The garbage leachate in the leachate tank is pumped out by the leachate pump and sent to the leachate treatment station in the factory for treatment. After the leachate is treated in the factory treatment station and meets the national water quality standards, it can be discharged or reused.

[0071] It is to be understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present disclosure, but the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and substance of the present disclosure, and these modifications and improvements are also considered to be within the scope of protection of the present disclosure.

Claims

1. A processing system for preparing RDF fuel using domestic garbage and solid waste, characterized in that: The treatment system comprises a garbage storage tank, a first crushing device, a screening device, a magnetic separation device, an air separation device, a fuel bin and an odor treatment device; the garbage storage tank is used to store domestic garbage and solid waste; Among them, the odor treatment equipment is used to deodorize the generated odor; the first crushing equipment is used to crush the domestic garbage and solid waste in the garbage storage pool; the screening equipment is used to screen the crushed garbage materials; the magnetic separation equipment is used to magnetically separate the screened materials; the air separation equipment is used to air separate the materials after magnetic separation; the fuel bin is used to store the materials separated by magnetic separation and / or air separation as RDF fuel.

2. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 1, characterized in that: The odor treatment equipment includes a spray device and a sealed air curtain device arranged corresponding to the garbage storage tank; The spray device is used to spray dust reduction and deodorization treatment on the odor and dust generated in the unloading and storage areas of the garbage storage tank; the sealed air curtain device is used to form an airflow barrier in the unloading and storage areas of the garbage storage tank to prevent the odor from overflowing.

3. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 2, characterized in that: The odor treatment equipment also includes an exhaust device, which is arranged in the unloading and storage area of ​​the garbage storage tank and is used to collect the generated odor and transport it to the spray device.

4. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 3, characterized in that: The exhaust device includes an air collecting hood and a centrifugal fan. The air collecting hood is arranged in the unloading and storage area of ​​the garbage storage tank to collect odor and dust; the centrifugal fan is arranged at the air collecting port of the air collecting hood to transport the odor and dust to the spray device.

5. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 1, characterized in that: Also includes: The leachate collection system is arranged in the garbage storage tank, and is used to collect the garbage leachate in the garbage storage tank and transport it to the leachate treatment station.

6. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 5, characterized in that: The leachate collection system comprises a grille door, a leachate pool and a leachate pump; wherein the garbage leachate flows into the leachate pool through the grille door, and is pumped to the leachate treatment station through the leachate pump connected to the leachate pool.

7. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 1, characterized in that: The sieve hole size of the screening equipment is 20mm-80mm, and is used to screen out materials with a crushing size of 20mm-80mm.

8. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 7, characterized in that: The magnetic separation equipment includes a first magnetic separator, a second magnetic separator and a third magnetic separator; the wind separation equipment includes a first wind separator and a second wind separator; the first wind separator is arranged correspondingly to the first magnetic separator, and the second wind separator is arranged correspondingly to the second magnetic separator; Wherein, the first magnetic separator is used to perform magnetic separation on materials with a crushing size of 80 mm or more, and the first air separator is used to perform air separation on the materials after magnetic separation; The second magnetic separator is used to perform magnetic separation on materials with a crushing size between 20 mm and 80 mm, and the second air separator is used to process the materials after magnetic separation; The third magnetic separator is used to perform magnetic separation on materials with a crushing size of less than 20 mm, and store the magnetically separated materials in the fuel bin.

9. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 8, characterized in that: Also includes: a second crushing device and a third crushing device, wherein the second crushing device is arranged corresponding to the first winnowing machine, and the third crushing device is arranged corresponding to the second winnowing machine; The second crushing equipment is used to crush the light materials in the materials selected by the first air separator, and the third crushing equipment is used to crush the heavy materials in the materials selected by the second air separator.

10. A processing system for preparing RDF fuel using domestic garbage and solid waste according to claim 9, characterized in that: Also includes: Temporary storage bin and drying equipment; the temporary storage bin is used to store the materials magnetically separated by the third magnetic separator and the materials crushed by the third crushing equipment; the drying equipment is arranged between the temporary storage bin and the fuel bin, and is used to dry the materials transferred from the temporary storage bin to the fuel bin.

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