Solid waste pretreatment system for radioactive waste incineration process

Abstract

The invention discloses a solid waste pretreatment system for a radioactive waste incineration process. The solid waste pretreatment system comprises a waste barrel receiving device, a barrel lifting and dumping device, a primary crushing device, an iron metal sorting device, a fine crushing device, a vortex sorting device, a winnowing device and an automatic packaging device. The waste bin receiving device is used for receiving a waste bin filled with nuclear power waste; the barrel lifting and dumping device is used for dumping the barreled waste into the primary crushing device; the primary crushing device is used for primarily crushing and scattering the waste; the iron metal sorting device is used for sorting out ferromagnetic waste in the waste for resource utilization; the fine crushing device is used for performing fine crushing on the iron-removed waste; the vortex sorting device is used for sorting metal and nonmetal wastes except iron; the winnowing device is used for sorting the non-combustible solid waste with the mass higher than a preset value in the non-metal waste and other waste; and the packaging device is used for bagging and sealing the sorted combustible wastes.

Description

A solid waste pretreatment system for radioactive waste incineration processes Technical Field

[0001] This invention relates to the field of radioactive solid waste treatment, and more specifically to a solid waste pretreatment system for radioactive waste incineration processes. Background Technology

[0002] Conventional radioactive waste pretreatment processes are highly reliant on manual operation, with core processes such as sorting, crushing, and packaging requiring significant manpower and time. Workers must manually sort mixed radioactive materials, relying primarily on visual identification for metal component recognition, which carries the risk of subjective judgment bias. The crushing stage easily generates high concentrations of radioactive aerosol particles. Despite the use of fully enclosed protective equipment and positive pressure breathing apparatus, the joints of protective suits are susceptible to seal failure due to friction from sharp objects during the transfer of irregularly shaped waste. Such mechanical damage poses a risk of radioactive material leakage. Furthermore, the lengthy operation cycle significantly reduces processing efficiency, and the manual packaging process leads to excessive dispersion in the quality of the waste packaging, severely impacting the continuous stability of subsequent pyrolysis processes. Summary of the Invention

[0003] To achieve the above and other related objectives, this invention discloses a solid waste pretreatment system for radioactive waste incineration processes, comprising a waste bin receiving device, a bin lifting and tilting device, a preliminary crushing device, a magnetic separation device, a fine crushing device, an eddy current separation device, an air separation device, and a packaging device arranged in series. The solid waste pretreatment system is applied before the pyrolysis furnace feeding stage. The waste bin receiving device receives waste bins containing nuclear power waste; the bin lifting and tilting device pours the waste from the waste bins into the preliminary crushing device; the preliminary crushing device performs preliminary crushing and dispersing of the waste; the magnetic separation device separates ferromagnetic waste from the waste for resource utilization; the fine crushing device performs fine crushing of the magnetically separated waste; the eddy current separation device separates metallic and non-metallic waste; the air separation device separates non-combustible solid waste with a mass exceeding a preset value from the non-metallic waste; and the packaging device bags and seals the remaining combustible solid waste after air separation and sends it into the pyrolysis furnace feeding device.

[0004] Preferably, the waste bin receiving device includes a sealed chamber, a transmission channel, and a cap removal device. The waste bin enters the sealed chamber through the transmission system, and the cap removal device is used to remove the caps from the waste bin inside the sealed chamber.

[0005] Preferably, the inlet and outlet ends of the sealed chamber are equipped with pneumatic slide gate valves, and the sealed chamber is equipped with a negative pressure system and an activated carbon adsorption device for adsorbing pollutants.

[0006] Preferably, the cap removal device is integrated into the top of the sealed chamber and uses a hydraulically driven shearing mechanism in conjunction with a vision positioning system.

[0007] Preferably, the bucket lifting and tilting device is equipped with a bucket holding mechanism and a lifting mechanism for clamping the waste bucket and lifting it to a set height. After the waste bucket reaches the set height, it rotates to turn the bucket opening downwards so that the waste falls into the conveyor belt. The conveyor belt is equipped with a cutting mechanism for shredding the waste bag.

[0008] Preferably, the magnetic separator includes a magnetic drum, a drive device, and a conveying device. Ferromagnetic materials are attracted by the magnetic field of the drum and adhere tightly to the surface of the drum. Non-magnetic materials are separated from the conveying device under the action of gravity or centrifugal force. Ferromagnetic materials rotate with the magnetic drum to the side without magnetic field or are peeled off by scrapers and fall into the magnetic material outlet. Non-magnetic materials fall to another outlet along the conveying device.

[0009] Preferably, the eddy current separator utilizes the conductive material to generate an induced current in an alternating magnetic field. The induced current generates a magnetic field opposite to the original magnetic field, which generates a repulsive force on the conductive material, causing it to move forward along the conveyor belt in the eddy current separator and be thrown out, thereby achieving the separation of metals and non-metals.

[0010] Preferably, the air separation device adopts the principle of aerodynamics and uses controllable airflow to screen waste.

[0011] Preferably, the packaging device includes a triaxial compression device and a waste packaging device. The combustible solid waste after air separation is compressed into waste blocks of a specified size by the triaxial compression device, fed into the waste packaging device for bagging and heat-sealing, and the bagged and sealed waste is then fed into the pyrolysis furnace feeding device.

[0012] Secondly, this invention discloses a method for pre-treatment of radioactive solid waste, comprising: a receiving step: receiving nuclear power plant drummed waste through a waste drum receiving device, removing the top cover of the waste drum using a lid removal device, and treating aerosol pollutants through two pneumatic gate valves at the inlet and outlet and a negative pressure system; a dumping step: clamping the waste drum with a drum lifting and dumping device and lifting it to a set height, rotating the waste drum so that the opening faces downwards, dumping the waste into a conveyor belt, and cutting the waste bag; a preliminary crushing step: crushing large pieces of waste into small pieces of waste using a preliminary crushing device, wherein the preliminary crushing device is a conical structure composed of a dual-shaft crushing mechanism; and a ferromagnetic metal sorting step: separating ferromagnetic materials from the pre-crushed waste using a ferromagnetic metal sorting device, using the magnetic attraction of a magnetic drum to make the ferromagnetic materials rotate with the drum and fall into the magnetic field. The material outlet is for non-magnetic materials, which fall into another outlet; the fine crushing step: the waste after iron removal is further crushed by a fine crushing device; the eddy current separation step: the finely crushed waste is separated by an eddy current separation device, which uses an alternating magnetic field to generate eddy currents in conductive materials and form a reverse magnetic field to separate non-ferrous metals from non-metals; the air separation step: the non-metallic waste after eddy current separation is air-separated by an air separation device, which uses a controlled airflow to separate light and small materials from heavy non-combustible solid waste; the baling step: the combustible waste after air separation is compressed into waste blocks of a specified size by an automated baling device, put into bags and heat-sealed, and sent to the pyrolysis furnace feeding device; the pretreatment method is used in the radioactive waste incineration process and is installed before the pyrolysis furnace feeding device to realize the receiving, sorting, crushing and baling of nuclear power waste.

[0013] By adopting the above technical solution, a solid waste pretreatment system for radioactive waste incineration process was designed. Installed before the pyrolysis furnace feeding device, it can not only realize the functions of receiving, sorting, crushing and packaging nuclear power waste, but also has a high degree of automation, is easy to operate, and can quickly form waste bags that meet the processing requirements of pyrolysis furnace. In addition, it can significantly improve metal recovery rate and resource utilization efficiency. It is highly efficient, has low manual workload, reduces the radiation dose from personnel exposure to radioactive waste, effectively protects personnel safety, and ensures the efficient, long-term and stable operation of equipment. Attached Figure Description

[0014] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. The drawings are provided for a better understanding of the present invention and are not intended to limit the scope of this disclosure. In the drawings, the same or similar reference numerals denote the same or similar elements, wherein: Figure 1 is a schematic diagram of a preprocessing system according to a first embodiment of the present invention; Figure 2 is a flowchart of a preprocessing method according to a second embodiment of the present invention.

[0015] Reference numerals in the attached drawings: 1. Waste bin receiving device; 2. Bin lifting and tilting device; 3. Primary crushing device; 4. Ferrous metal sorting device; 5. Fine crushing device; 6. Eddy current sorting device; 7. Air separation device; 8. Automated packaging device. Detailed Implementation

[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Referring to Figure 1, this embodiment of the invention provides a solid waste pretreatment system for radioactive waste incineration processes, including a waste bin receiving device 1, a bin lifting and tilting device 2, a preliminary crushing device 3, a ferrous metal sorting device 4, a fine crushing device 5, an eddy current sorting device 6, an air classifier 7, and an automated packaging device 8; the waste bin receiving device 1, the bin lifting and tilting device 2, the preliminary crushing device 3, the ferrous metal sorting device 4, the fine crushing device 5, the eddy current sorting device 6, the air classifier 7, and the automated packaging device 8 are arranged in series to form a solid waste pretreatment system for radioactive waste incineration processes, installed before the pyrolysis furnace feeding device; wherein: waste The drum receiving device 1 is used to receive the waste drums containing nuclear power waste; the drum lifting and tilting device 2 is used to tilt the waste drums into the primary crushing device 3; the primary crushing device 3 is used to perform primary crushing and dispersing of the waste; the ferromagnetic metal sorting device 4 is used to separate the ferromagnetic waste from the waste for resource utilization; the fine crushing device 5 is used to finely crush the waste after iron removal; the eddy current sorting device 6 is used to sort the metal and non-metal wastes other than iron; the air classifier 7 is used to sort the non-combustible solid waste with a mass higher than the preset value from the other waste; the baling device is used to bag and seal the sorted combustible waste and send it into the feeding device.

[0018] This system enables the reception, sorting, crushing, and packaging of nuclear power waste. It sorts and packages combustible waste to meet the waste reception requirements of the incineration system, ensuring the efficient, long-term, and stable operation of the equipment. It also sorts non-combustible waste, including non-ferrous and ferrous metals, to facilitate the recovery of metal resources and reuse. Furthermore, the system performs resource-based co-processing of nuclear power waste, boasting a high level of automation, ease of operation, high efficiency, low manual workload, and effective protection of personnel radiation safety.

[0019] Preferably, the waste container receiving device 1, used for receiving nuclear power plant waste in containers, consists of a sealed chamber, a transmission channel, and a cap removal device. The sealed chamber is equipped with two pneumatic gate valves at its inlet and outlet, respectively, located at the inlet and outlet of the transmission channel. The sealed chamber is equipped with a negative pressure system to handle aerosol contaminants that may be released during the cap removal process. When the waste container enters the sealed chamber, the cap removal device actuates to remove the top cover of the waste container, and then the waste container is sent into the container lifting and tilting device 2.

[0020] Preferably, the sealed chamber adopts a fully enclosed steel structure with an internal lead plate or concrete shielding layer to meet the shielding requirements for radioactive materials. It is equipped with two pneumatic gate valves at the inlet and outlet of the transmission channel, respectively. The gate valves use a combination of stainless steel gates and fluororubber sealing rings, and are driven by an electric mechanism to achieve vertical lifting and lowering of the gate, forming a double airtight isolation barrier to ensure zero leakage of radioactive materials during operation. The chamber is equipped with a negative pressure ventilation system, combined with a high-efficiency particulate filter (HEPA) and activated carbon adsorption device to treat aerosol pollutants that may be released during the cap removal process in real time. Preferably, the cap removal device is integrated into the top of the sealed chamber, using a hydraulically driven shearing mechanism and a vision positioning system working in conjunction. After the waste bin is conveyed to the fixed station via roller conveyor, a laser scanner automatically identifies the position of the cap latch, and a hydraulic shearing arm precisely cuts the cap steel strip with a customized blade. The removed cap is transferred by a vacuum adsorption robotic arm to a sealed waste cap temporary storage box to avoid the risk of secondary pollution caused by scattered metal fragments. This module is equipped with a torque sensor to dynamically adjust the shearing force and adapt to different models of bucket lid sealing structures. Preferably, the bucket lifting and tilting device 2 is equipped with a bucket-holding mechanism and a lifting mechanism to clamp the waste bucket and lift it to a certain height. After the bucket reaches the set height, it begins to rotate, turning the bucket opening downwards so that the waste inside falls into the conveyor belt. The conveyor belt is equipped with a mechanism to cut the waste bag, exposing the waste. After tilting, the waste bucket falls back, passes through the waste bucket receiving device 1, and is then removed from the waste bucket receiving device 1. Preferably, the bucket lifting and tilting device 2 consists of a column-type lifting mechanism and an adaptive bucket-holding system. The bucket-holding mechanism adopts a double hydraulic arm structure with embedded high-friction coefficient ceramic pads. The clamping force is adjusted in real time through a pressure feedback control system to ensure that the 200L steel bucket does not slip or deflect during vertical lifting. The lifting track is equipped with a photoelectric encoder and limit switches to achieve millimeter-level positioning accuracy, ensuring that the waste bucket accurately aligns with the feed inlet. An emergency braking device is installed at the bottom of the module, which can immediately lock the lifting mechanism in the event of a power outage or overload, ensuring operational safety. Preferably, the dumped waste enters the primary crushing device 3, which is used to crush large pieces of waste into smaller pieces and also to disperse them, facilitating subsequent ferrous metal sorting operations. The primary crushing device 3 has a conical structure with a wide waste inlet and a narrow bottom outlet. Its structure consists of a dual-shaft crushing mechanism, which reduces the volume of waste through the shearing and tearing action of the blades. The pre-crushed waste then enters the ferrous metal sorting device 4.

[0021] Preferably, the primary crushing device 3 is a fixed-type device, employing a twin-shaft crusher. The core component of the twin-shaft crusher is the blade system, typically including moving blades and fixed blades. These work together to perform shearing and tearing operations on the material. The blades are made of alloy material, possessing high hardness and wear resistance, effectively extending their service life. Preferably, the ferromagnetic metal sorting device 4 is used to separate ferromagnetic waste for resource utilization, and consists of a magnetic drum, a drive device, and a conveying device. Ferromagnetic materials are strongly attracted by the magnetic field of the drum, adhering tightly to the drum surface and rotating with it. Non-magnetic materials are unaffected by the magnetic field and, under the action of gravity or centrifugal force, detach from the conveyor belt along a parabolic trajectory. Magnetic materials rotate with the drum to the non-magnetic side or are peeled off by scrapers, falling into the magnetic material outlet for clean, controlled recycling and reuse of metal resources. Non-magnetic materials fall directly to another outlet, completing the sorting process, and enter the fine crushing device 5.

[0022] Preferably, the ferrous metal sorting device 4 is a shaping device, mainly composed of a drum sorting cylinder, a magnetic field generating device, a support frame, a drive device, and a sorting area. Its working principle is to adsorb and separate magnetic particles through a magnetic field gradient, thereby achieving the sorting of ferrous metal waste. Preferably, the fine crushing device 5 is used to further crush the waste after iron removal into smaller pieces for subsequent air separation. Its structure is similar to the primary crushing device 3, but the particle size after crushing is finer, approximately 2mm. Preferably, the fine crushing device 5 is a shaping device, employing a twin-shaft crusher, capable of further crushing the waste particles after ferrous metal sorting into smaller particles; its inlet and outlet particle sizes are both lower than those of the primary crushing device 3. Preferably, the eddy current separator 6 is used to sort metal and non-metal waste other than iron, i.e., the separation of non-ferrous metal and non-metal waste. The eddy current separator 6 utilizes conductive materials to generate induced currents, i.e., eddy currents, in an alternating magnetic field. These eddy currents generate a magnetic field opposite to the original magnetic field. This magnetic field exerts a repulsive force on conductive materials, causing them to move forward along the conveyor belt and be thrown out, thus achieving the separation of non-ferrous metals and non-metals. The system consists of a magnetic roller system, a conveyor belt system, and a control system. The separated non-ferrous metals enter a metal collection bin, while the non-metallic waste is transported to the air separation device 7 via a conveyor belt. Preferably, the eddy current separation device 6 consists of a magnetic roller system, a conveyor belt system, and a control system. The magnetic roller system can generate a high-frequency alternating magnetic field. The conveyor belt system uniformly transports the material to the separation zone. Within the separation zone, the material is subjected to a magnetic field, and metallic and non-metallic materials are separated into different processing units due to the different magnetic fields generated by the induced current. Preferably, the air separation device 7 is used to separate heavier non-combustible solid waste from other waste within the non-metallic waste. Utilizing aerodynamic principles, a controlled airflow separates light and small materials from heavy materials, such as glass blocks and cement blocks. Solid waste, including glass, enters a waste bin for further processing, while the remaining waste enters a baling device. Preferably, the air separation device 7 is a shaping device that uses air as the sorting medium. By controlling the speed and direction of the airflow, light particles, such as paper scraps and plastic films, are carried away by the airflow, while heavy particles, such as cement and glass blocks, cannot withstand the airflow and settle, thus achieving further separation of non-combustible waste. Preferably, the baling device consists of a triaxial compression device and a waste packaging device, used to bag and seal the sorted combustible waste before feeding it into a feeding device. The sorted waste falls into the inlet of the baling device, where a compression chamber is located. Inside the compression chamber, the waste is compressed into waste blocks of a specified size by XYZ triaxial compression, and then sent to the waste packaging device. The waste blocks are then packaged and heat-sealed. After packaging and sealing, the waste is conveyed into the feeding device via a conveyor.

[0023] Preferably, the automated packaging device 8 is a non-standard device used to compress and encapsulate the processed waste for subsequent pyrolysis incineration and temporary storage. This waste treatment system comprises a molding unit and a packaging module, forming a customized solution.

[0024] Preferably, the forming unit mainly performs compression modification treatment on the crushed material, and forms standard waste blocks from discrete waste through three-dimensional constraints; the packaging module packs the compressed waste into bags and automatically seals them to meet the requirements of the pyrolysis incinerator for incoming materials.

[0025] In a preferred embodiment, the present invention provides a method for pretreatment of radioactive solid waste, employing the aforementioned system, comprising: a receiving step: receiving nuclear power plant drummed waste through a waste drum receiving device 1, removing the top cover of the waste drum using a cap removal device, and treating aerosol pollutants through two pneumatic gate valves at the inlet and outlet and a negative pressure system; a dumping step: clamping the waste drum and lifting it to a set height using a drum lifting and dumping device 2, rotating the waste drum so that the opening faces downwards, dumping the waste into a conveyor belt, and cutting the waste bag; a preliminary crushing step: crushing large pieces of waste into smaller pieces using a preliminary crushing device 3, wherein the preliminary crushing device 3 is a conical structure composed of a dual-shaft crushing mechanism; and a ferromagnetic metal sorting step: separating ferromagnetic materials from the pre-crushed waste using a ferromagnetic metal sorting device 4, utilizing the magnetic attraction of a magnetic roller to attract the ferromagnetic materials along with the waste. The rotating drum drops the waste into the magnetic material outlet, while non-magnetic materials fall into another outlet. The fine crushing step involves further crushing the iron-removed waste using a fine crushing device 5. The eddy current separation step uses an eddy current separation device 6 to separate the finely crushed waste, utilizing an alternating magnetic field to generate eddy currents in conductive materials and create a reverse magnetic field, separating non-ferrous metals from non-metals. The air separation step uses an air separation device 7 to separate the non-metallic waste after eddy current separation, using controlled airflow to separate light and small materials from heavy, non-combustible solid waste. The packaging step involves an automated packaging device 8 compressing the air-separated combustible waste into waste blocks of a specified size, placing them in bags, heat-sealing them, and sending them into the pyrolysis furnace feeding device. This pretreatment method is used in radioactive waste incineration processes and is installed before the pyrolysis furnace feeding device to achieve the receiving, sorting, crushing, and packaging of nuclear power waste. It will be understood by those skilled in the art that, unless otherwise defined, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be understood that terms such as those defined in general dictionaries should be understood to have meanings consistent with their meanings in the context of the prior art, and should not be interpreted in an idealized or overly formal sense unless specifically defined.

[0026] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0027] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A solid waste pretreatment system for radioactive waste incineration processes, characterized in that, The system comprises a waste bin receiving device, a bin lifting and tilting device, a preliminary crushing device, a magnetic separation device, a fine crushing device, an eddy current separation device, an air separation device, and a baling device, arranged in series. This solid waste pretreatment system is applied before the pyrolysis furnace feeding stage. The waste bin receiving device receives waste bins containing nuclear power waste. The bin lifting and tilting device pours the waste from the waste bins into the preliminary crushing device. The preliminary crushing device performs preliminary crushing and dispersing of the waste. The magnetic separation device separates ferromagnetic waste from the waste for resource utilization. The fine crushing device performs fine crushing on the magnetically separated waste. The eddy current separation device separates metallic and non-metallic waste. The air separation device separates non-combustible solid waste with a mass exceeding a preset value from the non-metallic waste. The baling device bags and seals the remaining combustible solid waste after air separation and sends it to the pyrolysis furnace feeding device.

2. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The waste bin receiving device includes a sealed chamber, a transmission channel, and a cap removal device. The waste bin enters the sealed chamber through the transmission system, and the cap removal device is used to remove the caps from the waste bin inside the sealed chamber.

3. A solid waste pretreatment system for radioactive waste incineration process according to claim 2, characterized in that, The sealed chamber is equipped with pneumatic slide gate valves at the inlet and outlet ends, and a negative pressure system and an activated carbon adsorption device for adsorbing pollutants are installed inside the sealed chamber.

4. A solid waste pretreatment system for radioactive waste incineration process according to claim 2, characterized in that, The cap removal device is integrated into the top of the sealed chamber and uses a hydraulically driven shearing mechanism in conjunction with a vision positioning system.

5. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The bucket lifting and tilting device is equipped with a bucket clamping mechanism and a lifting mechanism, which are used to clamp the waste bucket and lift the waste bucket to a set height. After the waste bucket reaches the set height, it rotates so that the bucket opening faces downwards and the waste falls into the conveyor belt. The conveyor belt is equipped with a cutting mechanism for cutting the waste bag.

6. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The magnetic separator includes a magnetic drum, a drive device, and a conveying device. Ferromagnetic materials are attracted by the magnetic field of the drum and adhere tightly to the surface of the drum. Non-magnetic materials are separated from the conveying device under the action of gravity or centrifugal force. Ferromagnetic materials are rotated with the magnetic drum to the side without magnetic field or are peeled off by scrapers and fall into the magnetic material outlet. Non-magnetic materials fall to another outlet along the conveying device.

7. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The eddy current separator utilizes the conductive material to generate an induced current in an alternating magnetic field. The induced current generates a magnetic field opposite to the original magnetic field, which repels the conductive material, causing it to move forward along the conveyor belt in the eddy current separator and be thrown out, thus achieving the separation of metals and non-metals.

8. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The air separation device uses aerodynamic principles to screen waste through controlled airflow.

9. A solid waste pretreatment system for radioactive waste incineration process according to claim 1, characterized in that, The packaging device includes a triaxial compression device and a waste packaging device. The combustible solid waste after air separation is compressed into waste blocks of a specified size by the triaxial compression device, fed into the waste packaging device for bagging and heat-sealing, and the bagged and sealed waste is then fed into the pyrolysis furnace feeding device.

10. A method for pretreatment of radioactive solid waste, characterized in that, include: Receiving steps: Nuclear power plant drummed waste is received through a waste drum receiving device, the top cover of the waste drum is removed using a cap removal device, and aerosol pollutants are treated through two pneumatic gate valves at the inlet and outlet and a negative pressure system. The waste bin is clamped and lifted to a set height by the bucket lifting and dumping device. The waste bin is rotated so that the opening faces downwards, and the waste is poured into the conveyor belt and the waste bag is cut open. The preliminary crushing step is to crush large pieces of waste into smaller pieces by a preliminary crushing device, which is a conical structure composed of a dual-shaft crushing mechanism. The ferromagnetic material sorting step is to separate the ferromagnetic material from the preliminary crushed waste by a ferromagnetic material sorting device. The magnetic attraction of the magnetic drum causes the ferromagnetic material to rotate with the drum and fall into the magnetic material outlet, while the non-magnetic material falls into another outlet. Fine crushing step: The waste after iron removal is further crushed using a fine crushing device; Eddy current separation step: The finely crushed waste is separated by an eddy current separation device. An alternating magnetic field is used to generate eddy currents in conductive materials and form a reverse magnetic field to separate non-ferrous metals from non-metals. Air separation step: The non-metallic waste after eddy current separation is separated by an air separation device. A controlled airflow is used to separate light and small materials from heavy non-combustible solid waste. Packaging step: The combustible waste after air separation is compressed into waste blocks of a specified size by an automated packaging device, put into bags and heat-sealed, and sent to the pyrolysis furnace feeding device. The pretreatment method is used in radioactive waste incineration processes and is installed before the pyrolysis furnace feeding device to realize the receiving, sorting, crushing and packaging of nuclear power waste.

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