A radioactive slurry microwave solidification treatment device

Abstract

This invention belongs to the field of waste treatment technology and discloses a microwave solidification treatment device for radioactive mud. The device includes: a waste liquid recovery unit for centralized treatment of mud waste, collecting the waste liquid and sending it to a microwave evaporation furnace; a microwave evaporation furnace where, after waste liquid recovery, the mud enters through a high-efficiency conveying pipe, and the microwave evaporation furnace uses microwave heating to remove moisture from the mud; a glass raw material addition unit for uniformly mixing the dried mud with a preset ratio of glass raw material in a mixing screw mechanism to form a material suitable for melting; a microwave melting furnace where the mixed material is conveyed by a screw conveyor and rapidly heated to 1400°C using microwave heating; a microwave secondary combustion chamber for secondary heating of the exhaust gas generated during the melting process to remove harmful substances such as dioxins; and an exhaust gas treatment unit for removing dust from the exhaust gas after passing through the microwave secondary combustion chamber, using a dust removal device and a spray device to ensure the cleanliness of the emitted gas.

Description

Technical Field

[0001] This invention belongs to the field of waste treatment technology, and in particular relates to a microwave solidification treatment device for radioactive mud. Background Technology

[0002] Radioactive mud is a critical issue urgently needing resolution in the field of radioactive pollution control. It primarily originates from radioactive nuclide deposits generated during uranium mining, hydrometallurgical treatment, nuclear fuel manufacturing, and reactor operation, and is a significant source of global radioactive pollution. Currently, the cumulative storage of intermediate- and high-level radioactive mud worldwide exceeds 3 million cubic meters. Radioactive mud contains various radionuclides such as radium, uranium, and thorium, as well as heavy metal pollutants. It is characterized by its long lifespan and high dispersion, posing a long-term threat to the ecological environment and causing incalculable losses to economic development and public health. Transforming radioactive mud into a stable solidified form to ensure the long-term isolation of nuclides from the biosphere has become a crucial step in radioactive pollution remediation.

[0003] Currently, radioactive mud solidification technologies mainly include cement solidification and vitrification, but both have significant technical bottlenecks. Cement solidification technology suffers from short solidified body lifespan, low strength, and high leaching rate, making it prone to breakage and leakage under external forces, posing a long-term threat to the environment. Vitrification technology, on the other hand, faces problems such as high energy consumption, long sintering time, and poor uniformity, resulting in insufficient chemical stability of the solidified body. These limitations severely restrict the effectiveness of radioactive mud solidification treatment. Developing new solidification technologies to improve the performance of solidified bodies and achieve long-term safe isolation has become crucial for radioactive mud remediation.

[0004] Microwave curing technology, with its advantages of rapid heating, low energy consumption, and short sintering time, has shown great promise in fields such as inorganic material processing and ceramic sintering. Applying microwave technology to the curing of radioactive mud can improve the uniformity and erosion resistance of the solidified body, while simultaneously reducing the mud volume. However, current microwave curing technology for radioactive mud is still in the theoretical research stage, and key scientific issues remain to be resolved. In-depth research into the microwave action mechanism, establishment of stability models, optimization of solidified body performance, and development of engineering equipment are crucial breakthroughs for achieving efficient treatment of radioactive mud and ensuring environmental safety. Summary of the Invention

[0005] To address the problems existing in the prior art, the present invention provides a microwave solidification device for radioactive mud.

[0006] This invention is implemented as follows: a microwave solidification device for radioactive mud, comprising:

[0007] Waste liquid recovery device: centrally processes medium / high emission mud waste, collects waste liquid and sends it to microwave evaporation furnace.

[0008] Microwave Evaporation Furnace: After waste liquid is recovered, the slurry enters the microwave evaporation furnace through a high-efficiency conveying pipeline. The microwave evaporation furnace uses microwave heating to remove moisture from the slurry. Moisture is discharged by the exhaust gas treatment device, and the evaporated dry slurry is conveyed to the mixing screw mechanism via a screw conveyor.

[0009] Glass raw material addition device: The dried mud slurry is mixed evenly with the glass raw material in a preset ratio in the mixing screw mechanism to form a material suitable for melting.

[0010] Microwave melting furnace: The mixed materials are fed into the microwave melting furnace via a screw conveyor. Microwave heating rapidly heats the materials to 1400°C, achieving a molten state. The molten mixture overflows into a glass melt storage tank.

[0011] Microwave secondary combustion chamber: The exhaust gas generated during the melting process enters the microwave secondary combustion chamber for secondary heating to remove harmful substances such as dioxins from the exhaust gas.

[0012] Exhaust gas treatment device: After passing through the microwave secondary combustion chamber, dust in the exhaust gas is removed by a dust removal device and a spray device to ensure the cleanliness of the emitted gas. The treated exhaust gas is discharged into the air by a fan, meeting environmental emission standards.

[0013] Furthermore, a waste liquid recovery unit, located at the forefront of the system, is used to collect and centrally treat intermediate / high-level radioactive mud waste liquid. The recovery unit transports the waste liquid to the microwave evaporator via connected pipelines. This unit ensures the effective collection and precise delivery of the mud waste liquid, providing a continuous and stable source of waste liquid for subsequent treatment.

[0014] Furthermore, the waste liquid recovery device is connected to the microwave evaporator, and the slurry is transported to the microwave evaporator through pipelines. The working principle of the microwave evaporator is to use microwaves to heat the slurry to remove moisture. The characteristic of microwave heating is that it can efficiently evaporate moisture in a short time, thus drying the slurry. A spiral conveyor device is installed at the bottom of the evaporator to transport the evaporated dry slurry to the mixing spiral mechanism. At the same time, the water vapor generated by evaporation is collected and discharged by the exhaust gas treatment device, thereby reducing the humidity inside the system and ensuring a dry treatment environment.

[0015] Furthermore, the dried slurry enters the mixing screw mechanism, where it is uniformly mixed with the raw glass material according to a preset ratio. A raw glass material adding device is connected to the mixing screw mechanism, and a proportioning controller ensures precise proportions of the raw glass material and the dried slurry. This process, through screw stirring, ensures uniform mixing of the two materials, generating a mixture suitable for microwave melting. The uniformity of the mixture plays a crucial role in the subsequent melting effect.

[0016] Furthermore, the mixture is fed into a microwave melting furnace via a screw conveyor. The microwave melting furnace rapidly heats the mixture to 1400°C using microwave heating technology, bringing it to a fully molten state. At this high temperature, the slurry and raw glass material fuse together to form molten glass. The melting furnace employs an overflow design, ensuring that the molten mixture automatically flows into a glass storage tank through the overflow port, preventing excessive molten material from accumulating and affecting the temperature balance within the furnace.

[0017] Furthermore, the exhaust gas generated during the melting process (including harmful substances such as dioxins) flows into the microwave secondary combustion chamber through a pipe. The secondary combustion chamber uses secondary microwave heating to oxidize and decompose any remaining harmful substances in the exhaust gas. This secondary combustion process significantly reduces the pollutant content in the exhaust gas, especially effectively removing harmful substances such as dioxins. The exhaust gas outlet of the secondary combustion chamber is connected to an exhaust gas treatment device, which then transmits the treated exhaust gas to the next filtration device.

[0018] Furthermore, the exhaust gas outlet of the microwave secondary combustion chamber is connected to an exhaust gas treatment device, which includes a dust removal and spray system. The exhaust gas first passes through the dust removal device to remove solid dust particles, and then enters the spray device to further remove residual pollutants and particulate matter. After multi-stage treatment, the clean exhaust gas is discharged into the air through a fan, meeting environmental emission standards. The exhaust gas treatment device is connected to the atmospheric emission outlet, ensuring environmental friendliness by guaranteeing clean emissions.

[0019] In combination with the above technical solutions and the technical problems solved, the advantages and positive effects of the technical solution to be protected by this invention are as follows:

[0020] First, the technical solution of this invention achieves efficient and safe solidification treatment of medium / high radioactive mud, and its technical effects include:

[0021] 1. Improved processing efficiency: Microwave heating removes moisture and melts the material, resulting in faster processing speed and improved overall efficiency of mud treatment compared to traditional methods.

[0022] 2. Improved safety and environmental protection: After the slurry and glass raw materials are melted together, the radioactive slurry is solidified in the glass matrix to prevent secondary pollution; the secondary combustion chamber and exhaust gas treatment device can effectively remove harmful substances in the exhaust gas, meeting environmental emission standards.

[0023] 3. Reduced equipment wear and tear: Microwave heating is uniform and efficient, reducing thermal shock to equipment, extending equipment lifespan, and lowering maintenance and operating costs.

[0024] 4. Achieve volume reduction of radioactive waste: After evaporating moisture, drying and melting solidification can significantly reduce the volume of waste, making it easier for subsequent storage and treatment.

[0025] Secondly, this invention mainly solves several key problems in the treatment of medium / high radioactive mud:

[0026] 1. Highly efficient moisture removal: Traditional heating methods are difficult to quickly remove moisture from mud. Microwave heating can efficiently evaporate moisture in a short time, reducing the volume of mud and thus reducing processing costs and equipment stress.

[0027] 2. Safe solidification of radioactive mud: By melting the mud with glass raw materials, the radioactive mud can be solidified in the glass matrix, preventing the diffusion of radioactive materials and thus improving the safety of the treatment.

[0028] 3. Pollutant control in exhaust gas treatment: During the melting process, the microwave secondary combustion chamber can effectively remove harmful substances such as dioxins. After dust removal and spraying treatment, the exhaust gas meets emission standards, thus solving the exhaust gas pollution problem. Attached Figure Description

[0029] Figure 1 This is a flowchart of the operation of the microwave solidification device for radioactive mud provided in this embodiment of the invention;

[0030] Figure 2 This is a perspective view of the microwave solidification device for radioactive mud provided in an embodiment of the present invention;

[0031] Figure 3 This is a front view of the microwave solidification treatment device for radioactive mud provided in an embodiment of the present invention;

[0032] In the diagram: 1. Waste liquid recovery device; 2. Microwave evaporation furnace; 3. Glass raw material addition device; 4. Microwave melting furnace; 5. Microwave secondary combustion chamber; 6. Exhaust gas treatment device. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0034] like Figure 1 As shown, the medium / high discharge mud treatment system is equipped with a waste liquid recovery device 1, a microwave evaporator 2, a glass raw material addition device 3, a microwave melting furnace 4, a microwave secondary combustion chamber 5, a glass liquid storage tank, and a tail gas treatment device 6.

[0035] Step 1: The mud is first collected by the waste liquid recovery device 1. Then, the mud is directly guided to the microwave evaporation furnace 2 through the high-efficiency conveying pipeline. The microwave evaporation furnace 2 removes the water in the mud by microwave heating. The resulting dry mud is conveyed by a screw conveyor to the mixing screw mechanism, and the water vapor is discharged by the tail gas treatment device 6.

[0036] Step 2: The dry mud and raw glass are mixed in a certain proportion and conveyed to the microwave melting furnace 4 by a screw conveyor;

[0037] Step 3: The mixture of dry mud and raw glass is heated rapidly to 1400℃ under microwave heating, reaching a molten state, and then flows into the glass solution storage tank in the form of overflow.

[0038] In the fourth step, the exhaust gas generated during melting is passed through the microwave secondary combustion chamber 5 to remove harmful substances such as dioxins from the exhaust gas. Dust is removed by a dust removal device and a spray device, and the clean exhaust gas is discharged into the air by a fan.

[0039] like Figure 2 , Figure 3 As shown, this invention employs microwave heating technology and a multi-stage processing device to progressively treat medium / high radioactive mud waste, achieving safe and efficient solidification of the mud waste. The system's processing procedure is as follows:

[0040] Waste liquid recovery device 1: Centrally process medium / high discharge mud waste, collect waste liquid and send it into microwave evaporator 2.

[0041] Microwave Evaporator 2: After waste liquid is recovered, the slurry enters the microwave evaporator 2 through a high-efficiency conveying pipeline. The microwave evaporator 2 uses microwave heating to remove moisture from the slurry. Water vapor is discharged by the exhaust gas treatment device 6, and the evaporated dry slurry is conveyed to the mixing screw mechanism by a screw conveyor.

[0042] Glass raw material adding device 3: The dried mud slurry and the glass raw material in a preset ratio are evenly mixed in the mixing screw mechanism to form a material suitable for melting.

[0043] Microwave melting furnace 4: The mixed materials are fed into microwave melting furnace 4 via a screw conveyor. Microwave heating rapidly heats the materials to 1400℃, achieving a molten state. The molten mixture overflows into the glass melt storage tank.

[0044] Microwave secondary combustion chamber 5: The exhaust gas generated during the melting process enters the microwave secondary combustion chamber 5 for secondary heating to remove harmful substances such as dioxins from the exhaust gas.

[0045] Exhaust gas treatment device 6: After passing through the microwave secondary combustion chamber 5, dust in the exhaust gas is removed by a dust removal device and a spray device to ensure the cleanliness of the emitted gas. The treated exhaust gas is discharged into the air by a fan, meeting environmental emission standards.

[0046] Working principle of medium / high mud treatment system:

[0047] 1. Waste liquid recovery device 1

[0048] The waste liquid recovery unit 1 is located at the front end of the system and is used to collect and centrally treat intermediate / high-level radioactive mud waste liquid. The recovery unit transports the waste liquid to the microwave evaporator 2 via a connected pipeline. This unit ensures the effective collection and precise delivery of the mud waste liquid, providing a continuous and stable source of waste liquid for subsequent treatment.

[0049] 2. Microwave Evaporation Oven

[0050] Waste liquid recovery device 1 is connected to microwave evaporator 2, and the slurry is transported into microwave evaporator 2 through pipelines. The working principle of microwave evaporator 2 is to use microwaves to heat the slurry to remove moisture. The characteristic of microwave heating is that it can efficiently evaporate moisture in a short time, thus drying the slurry. A spiral conveyor device is provided at the bottom of the evaporator to transport the evaporated dry slurry to the mixing spiral mechanism. At the same time, the water vapor generated by evaporation is collected and discharged by tail gas treatment device 6, thereby reducing the humidity inside the system and ensuring a dry processing environment.

[0051] 3. Glass raw material adding device 3

[0052] The dried slurry enters the mixing screw mechanism and is uniformly mixed with the glass raw material according to a preset ratio. The glass raw material adding device 3 is connected to the mixing screw mechanism and a proportioning controller ensures precise mixing of the glass raw material and the dried slurry. This process, through screw stirring, ensures uniform mixing of the two materials, generating a mixture suitable for microwave melting. The uniformity of the mixture plays a crucial role in the subsequent melting effect.

[0053] 4. Microwave melting furnace

[0054] The mixture enters the microwave melting furnace 4 via a screw conveyor. The microwave melting furnace 4 rapidly heats the mixture to 1400°C using microwave heating technology, bringing it to a fully molten state. Under this high-temperature environment, the slurry and raw glass material fuse together to form molten glass. The melting furnace employs an overflow design, ensuring that the molten mixture automatically flows into the molten glass storage tank through the overflow port, preventing excessive accumulation of molten material from affecting the temperature balance within the furnace.

[0055] 5. Microwave secondary combustion chamber 5

[0056] The exhaust gas generated during the melting process (including harmful substances such as dioxins) flows into the microwave secondary combustion chamber 5 through a pipe. The secondary combustion chamber uses secondary microwave heating to oxidize and decompose any remaining harmful substances in the exhaust gas. This secondary combustion process significantly reduces the pollutant content in the exhaust gas, especially effectively removing harmful substances such as dioxins. The exhaust gas outlet of the secondary combustion chamber is connected to the exhaust gas treatment device 6, which transmits the treated exhaust gas to the next filtration device.

[0057] 6. Exhaust gas treatment device 6

[0058] The exhaust gas outlet of the microwave secondary combustion chamber 5 is connected to the exhaust gas treatment device 6, which includes a dust removal and spraying system. The exhaust gas first passes through the dust removal device to remove solid dust particles, and then enters the spraying device to further remove residual pollutants and particulate matter. After multi-stage treatment, the clean exhaust gas is discharged into the air through a fan, meeting environmental emission standards. The exhaust gas treatment device 6 is connected to the atmospheric emission outlet, ensuring environmental friendliness by guaranteeing clean emissions.

[0059] The various devices in this system are connected through conveying pipelines, spiral conveyors, and overflow design, which realizes the continuity and effectiveness of waste liquid recovery, drying, mixing, melting, and exhaust gas purification.

[0060] The following are two specific embodiments of this medium / high-efficiency mud treatment system:

[0061] Example 1: Treatment of radioactive mud waste from nuclear power plants

[0062] During the operation of nuclear power plants, intermediate / high-level radioactive slurry waste generated requires safe disposal to prevent the spread of radioactive materials. In this scenario, the processing system of this invention can be used in slurry waste treatment stations within nuclear power plants:

[0063] 1. Waste liquid collection and transportation: Waste liquid recovery device 1 collects slurry waste liquid containing radioactive materials from the cooling system and cleaning process of nuclear power plants, and then transports it to microwave evaporation furnace 2 through sealed pipelines.

[0064] 2. Drying and mixing: In microwave evaporation furnace 2, the moisture in the slurry waste is rapidly evaporated by microwave heating. The dried slurry is then mixed with glass raw materials in proportion by a screw conveyor.

[0065] 3. Melting and Solidification: The mixture enters the microwave melting furnace 4, where it forms a glassy solid at high temperature, thus stably encapsulating the radioactive material within the glass matrix. The molten glassy waste overflows into a storage tank for centralized storage.

[0066] 4. Exhaust gas treatment: The harmful exhaust gas generated during the melting process passes through the microwave secondary combustion chamber 5 and the exhaust gas treatment device 6 to remove harmful substances such as dioxins, and is discharged after meeting the standards.

[0067] This embodiment enables the direct processing of radioactive mud waste inside nuclear power plants, achieving volume reduction of the mud and safe solidification of radioactive materials, thereby reducing the potential pollution risk to the surrounding environment.

[0068] Example 2: Centralized processing system of a radioactive waste treatment center

[0069] At radioactive waste treatment centers, sludge waste containing intermediate / high levels of radioactive material collected from various locations needs to be processed. The application of this system at the treatment center is as follows:

[0070] 1. Centralized waste liquid treatment: Medium / high emission mud waste from different sources is collected and sorted, and then sent to microwave evaporation furnace 2 after being collected by waste liquid recovery device 1.

[0071] 2. Moisture removal: In the microwave evaporator 2, the moisture in the waste liquid is removed by microwave heating, reducing the volume of waste, and the dry mud is conveyed to the mixing mechanism by a screw conveyor.

[0072] 3. Mixing and Glass Curing: The dry slurry and raw glass are mixed in a preset ratio in a mixing screw mechanism to ensure uniformity, and then fed into microwave melting furnace 4 for high-temperature melting. The molten glass curing body is easy to store safely and handle further.

[0073] 4. Exhaust gas emission control: The exhaust gas generated during the treatment process is treated at high temperature in the secondary combustion chamber and then enters the exhaust gas treatment device 6. After dust removal and spraying treatment, it finally meets the emission standards.

[0074] This embodiment is applicable to the centralized treatment of intermediate / high-level radioactive mud waste from different sources. It has the advantages of high treatment efficiency, strict emission control, and stable solidification effect, providing a reliable technical solution for regional radioactive waste management.

[0075] The following is a systematic approach for treating medium / high radioactive mud waste, based on microwave heating technology and a multi-stage treatment device to achieve efficient solidification of the waste:

[0076] 1. Waste liquid recovery and centralized treatment

[0077] Waste liquid recovery device 1 is used to centrally collect medium / high radioactive mud waste.

[0078] The waste liquid is guided to microwave evaporator 2 through a sealed conveying pipeline, preparing it for subsequent treatment.

[0079] 2. Microwave evaporation and drying treatment

[0080] The mud waste liquid is fed into microwave evaporator 2, and microwave heating is started to remove the moisture from the mud.

[0081] Moisture is discharged in the form of water vapor through the exhaust gas treatment device 6, and the evaporated dry mud is transported to the mixing device by a screw conveyor mechanism.

[0082] 3. Addition and mixing of raw glass materials

[0083] Using the glass raw material adding device 3, the dried mud slurry and glass raw material are mixed evenly according to a preset ratio.

[0084] The mixed materials are conveyed to the microwave melting furnace 4 by a screw conveyor to ensure the uniformity and compatibility of the materials.

[0085] 4. Microwave melting and glass curing

[0086] The mixture is microwave heated in microwave melting furnace 4, causing its temperature to rise rapidly to 1400℃, forming a molten glassy mixture.

[0087] Molten glass waste automatically flows into a glass melt storage tank via overflow for storage and cooling.

[0088] 5. Exhaust gas treatment and emission control

[0089] The harmful exhaust gases generated during the melting process enter the microwave secondary combustion chamber 5 for secondary heating to remove harmful substances such as dioxins.

[0090] The exhaust gas passes through a dust removal device and a spray device to further remove dust and residual pollutants.

[0091] The treated exhaust gas is discharged into the air through a fan to ensure compliance with environmental emission standards.

[0092] 6. Waste storage and safety management

[0093] The molten and solidified glassy waste is stored in glass melt storage tanks to ensure the safe containment of radioactive materials.

[0094] Transfer the storage tanks to a safe storage area and monitor the condition of the waste regularly to ensure its long-term safety.

[0095] Microwave heating control: Precise control of microwave power and temperature in evaporation and melting furnaces ensures rapid removal of moisture and uniform melting of mixtures.

[0096] Proportional mixing control: The ratio of raw glass material to dry slurry is precisely set by an automatic control device to ensure the stability of the molten glass matrix and adapt to the processing requirements of different waste materials.

[0097] Exhaust emission monitoring: Multi-level sensors are installed in the exhaust gas treatment device 6 and the emission port to monitor harmful components in the emissions in real time and ensure that emissions meet environmental protection standards.

[0098] This method combines microwave heating with a multi-stage processing unit to achieve efficient evaporation, solidification, and safe storage of intermediate / high-level radioactive mud waste. Each step is tightly integrated, effectively reducing the volume of radioactive waste while encapsulating radioactive materials within a stable glass matrix, providing a waste management solution that meets environmental standards.

[0099] In the description of this invention, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0100] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications, equivalent substitutions, and improvements made by those skilled in the art within the scope of the technology disclosed in the present invention, and within the spirit and principles of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A microwave solidification device for radioactive mud, characterized in that, include: Waste liquid recovery device: centrally processes medium / high emission mud waste, collects waste liquid and sends it to microwave evaporation furnace; Microwave Evaporation Furnace: After the waste liquid is recovered, the slurry enters the microwave evaporation furnace through a high-efficiency conveying pipeline. The microwave evaporation furnace uses microwave heating to remove the moisture from the slurry. The water vapor is discharged by the exhaust gas treatment device, and the evaporated dry slurry is conveyed to the mixing screw mechanism by a screw conveyor. Glass raw material addition device: The dried mud slurry is uniformly mixed with glass raw materials in a preset ratio in the mixing screw mechanism to form a material suitable for melting; Microwave melting furnace: The mixed materials are fed into the microwave melting furnace via a screw conveyor; microwave heating is used to rapidly heat the materials to 1400℃, achieving a molten state; the molten mixture overflows into the glass melt storage tank; Microwave secondary combustion chamber: The exhaust gas generated during the melting process enters the microwave secondary combustion chamber for secondary heating to remove harmful substances in the exhaust gas, including dioxins. Exhaust gas treatment device: After passing through the microwave secondary combustion chamber, the dust in the exhaust gas is removed by the dust removal device and the spray device to ensure the cleanliness of the emitted gas; the treated exhaust gas is discharged into the air by the fan, which meets the environmental emission standards.

2. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The waste liquid recovery device is located at the front end of the system and is used to collect and centrally process medium / high radioactive mud waste liquid. The recovery device transports the waste liquid to the microwave evaporation furnace through a connected conveying pipeline. This device ensures the effective collection and accurate delivery of mud waste liquid, providing a continuous and stable waste liquid source for subsequent treatment.

3. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The waste liquid recovery device is connected to the microwave evaporator, and the slurry is transported to the microwave evaporator through a pipeline. The working principle of the microwave evaporator is to use microwaves to heat the slurry to remove moisture. The characteristic of microwave heating is that it can efficiently evaporate moisture in a short time and dry the slurry. A spiral conveyor is provided at the bottom of the evaporator to transport the evaporated dry slurry to the mixing spiral mechanism. At the same time, the water vapor generated by evaporation is collected and discharged by the exhaust gas treatment device, thereby reducing the humidity inside the system and ensuring a dry treatment environment.

4. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The dried mud material enters the mixing screw mechanism and is uniformly mixed with the glass raw material according to a preset ratio. The glass raw material adding device is connected to the mixing screw mechanism and the ratio controller ensures that the ratio of glass raw material and mud material is accurate. This process ensures that the two materials are uniformly mixed through screw stirring, generating a mixture suitable for microwave melting. The uniformity of the mixture plays a key role in the subsequent melting effect.

5. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The mixture enters the microwave melting furnace via a screw conveyor; the microwave melting furnace rapidly heats the mixture to 1400℃ using microwave heating technology, bringing it to a fully molten state; under this high-temperature environment, the slurry and raw glass material fuse together to form molten glass; the melting furnace adopts an overflow design to ensure that the molten mixture automatically flows into the glass liquid storage tank through the overflow port, avoiding excessive accumulation of molten material that could affect the temperature balance inside the furnace.

6. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The exhaust gas generated during the melting process flows into the microwave secondary combustion chamber through a pipeline; the secondary combustion chamber oxidizes and decomposes the residual harmful substances in the exhaust gas through secondary microwave heating; this secondary combustion process significantly reduces the pollutant content in the exhaust gas and has a highly efficient removal effect on harmful substances, including dioxins; the exhaust gas outlet of the secondary combustion chamber is connected to the exhaust gas treatment device, which transmits the treated exhaust gas to the next step of the filtration device.

7. The microwave solidification device for radioactive mud as described in claim 1, characterized in that, The exhaust gas outlet of the microwave secondary combustion chamber is connected to an exhaust gas treatment device, which includes a dust removal and spraying system. The exhaust gas first passes through the dust removal device to remove solid dust particles, and then enters the spraying device to further remove residual pollutants and particles. After multi-stage treatment, the clean exhaust gas is discharged into the air through a fan, meeting environmental emission standards. The exhaust gas treatment device is connected to the atmospheric emission outlet, achieving environmental friendliness by ensuring the cleanliness of emissions.

Images