A vertical adsorption device prototype for krypton-xenon tail gas of thorium-based molten salt reactor

Abstract

The utility model discloses a kind of thorium-based molten salt reactor krypton xenon tail gas vertical adsorption device prototype, including adsorption cylinder, adsorption cylinder includes by from top to bottom sequentially arranged filter cavity, adsorption cavity and tail gas inlet buffer cavity composition, adsorption cylinder makes adsorption device vertical structure, tail gas is sent into from the lower part of adsorption device, after adsorption and filtration, from the top of adsorption device Output, it is favorable to increase the fluidity of tail gas, also by filling nuclear grade activated carbon in adsorption cavity, can efficiently adsorb radioactive krypton (Kr) and xenon (Xe) gas in tail gas, the high specific surface area and microporous structure of activated carbon make it have strong adsorption capacity, can significantly reduce the concentration of krypton and xenon in tail gas.Krypton and xenon are adsorbed after tail gas first passes through tail gas inlet buffer cavity, then enters adsorption cavity, again through multistage processing mode, ensure that tail gas reaches strict environmental protection standard before being discharged.

Description

Technical Field

[0001] This utility model relates to tail gas treatment technology for thorium-based molten salt reactors, and particularly to a prototype of a vertical adsorption device for krypton-xenon tail gas from thorium-based molten salt reactors. Background Technology

[0002] In the field of nuclear energy, especially in thorium-based molten salt reactors (TMSRs) and other new nuclear power plants, the treatment of radioactive exhaust gases is a significant safety and environmental issue. The retention and treatment of radioactive krypton (Kr) and xenon (Xe) gases are particularly critical. Krypton and xenon are radioactive inert gases produced during nuclear reactions, possessing long half-lives and high levels of radioactivity. Direct release into the environment poses a potential threat to human health and the ecological environment.

[0003] Therefore, the nuclear industry requires highly efficient exhaust gas treatment systems to ensure that radioactive gases are effectively removed and retained before being emitted. Activated carbon adsorption technology, due to its high efficiency and reliability, has been widely used in the treatment of radioactive gases.

[0004] Existing activated carbon adsorption beds typically employ a horizontal structure, with ordinary activated carbon filling the interior. These devices primarily rely on the adsorption capacity of activated carbon to remove krypton and xenon when treating radioactive gases. However, traditional adsorption beds lack comprehensive consideration in their design for gas flow, exhaust gas temperature control, and dust management, leading to unstable adsorption efficiency and requiring improvements in equipment reliability and safety. For example, when treating high-temperature exhaust gases, traditional adsorption beds lack effective cooling systems, which can easily cause a decline in activated carbon adsorption performance and even pose safety hazards. Utility Model Content

[0005] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a prototype of a vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor, which can improve the adsorption efficiency of krypton-xenon tail gas.

[0006] To solve the above technical problems, the present invention adopts the following technical solution:

[0007] A prototype vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor includes an adsorption cylinder. From top to bottom, the adsorption cylinder comprises a filter chamber, an adsorption chamber, and a tail gas inlet buffer chamber. The filter chamber contains a filter, and the adsorption chamber is filled with nuclear-grade activated carbon. The tail gas inlet buffer chamber has a waste gas inlet, and the filter chamber has a waste gas outlet. The adsorption chamber also contains a gas-cooling pipe, a cooling gas inlet, and a cooling gas outlet. A discharge port is located at the lower part of the tail gas inlet buffer chamber. The krypton-xenon tail gas from the thorium-based molten salt reactor enters the adsorption cylinder through the waste gas inlet, adsorbs krypton and xenon in the adsorption chamber, and is then filtered by the filter chamber before being discharged from the waste gas outlet.

[0008] In the prototype of the vertical adsorption device for the krypton-xenon tail gas of the thorium-based molten salt reactor, the adsorption chamber is provided with several thermometer interfaces for installing thermistors or thermometers. When the temperature value detected by any thermistor or thermometer exceeds the set value, the cooling gas source connected to the cooling gas inlet delivers cold gas to the air-cooling pipe to cool the krypton-xenon tail gas of the thorium-based molten salt reactor.

[0009] In the prototype of the vertical adsorption device for krypton-xenon exhaust gas from the thorium-based molten salt reactor, a first differential pressure gauge is installed on the exhaust gas inlet buffer chamber above the exhaust gas inlet, and a second differential pressure gauge is installed at the exhaust gas outlet.

[0010] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, a third differential pressure gauge is also installed on the filter chamber.

[0011] In the prototype of the vertical adsorption device for krypton-xenon exhaust gas from the thorium-based molten salt reactor, a thermometer and hygrometer interface is also provided on one side of the exhaust gas inlet buffer chamber.

[0012] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, flanges are provided at the connection ends of the filter chamber, adsorption chamber, and tail gas inlet buffer chamber, and the filter chamber, adsorption chamber, and tail gas inlet buffer chamber are connected by bolts.

[0013] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, the tail gas inlet buffer chamber is equipped with a support for vertically placing the vertical adsorption device.

[0014] In the prototype of the vertical adsorption device for krypton-xenon tail gas of the thorium-based molten salt reactor, an inclined unloading baffle is provided in the tail gas inlet buffer chamber. The unloading baffle is provided with air-permeable micropores. The unloading baffle divides the tail gas inlet buffer chamber into a tail gas buffer chamber and an activated carbon dust collection chamber. The unloading port is located in the activated carbon dust collection chamber and is inclined downward. The unloading port is provided with an unloading cover.

[0015] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, the cooling gas inlet is located at the upper part of the adsorption chamber, the cooling gas outlet is located at the lower part of the adsorption chamber, and the gas cooling pipe is spirally arranged in the adsorption chamber.

[0016] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, there are 3-10 thermometer interfaces, which are equidistantly arranged on the side wall of the adsorption chamber.

[0017] Compared to existing technologies, the prototype of the vertical adsorption device for krypton-xenon exhaust gas from a thorium-based molten salt reactor provided by this invention consists of a filter chamber, an adsorption chamber, and an exhaust gas inlet buffer chamber arranged sequentially from top to bottom. The adsorption cylinder makes the adsorption device a vertical structure. The exhaust gas is fed into the adsorption device from the bottom, and after adsorption and filtration, it is output from the top of the adsorption device, which helps to increase the flowability of the exhaust gas. Furthermore, by filling the adsorption chamber with nuclear-grade activated carbon, it can efficiently adsorb radioactive krypton (Kr) and xenon (Xe) gases in the exhaust gas. The high specific surface area and microporous structure of the activated carbon give it a strong adsorption capacity, which can significantly reduce the concentration of krypton and xenon in the exhaust gas. The exhaust gas first passes through the exhaust gas inlet buffer chamber, and then enters the adsorption chamber for krypton and xenon adsorption. After that, it undergoes a multi-stage treatment process to ensure that the exhaust gas meets strict environmental standards before being emitted. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor provided by this utility model, taken from one angle.

[0019] Figure 2 This is a structural schematic diagram of another angle of the prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor provided by this utility model.

[0020] Figure 3 A cross-sectional schematic diagram of the prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor provided by this utility model.

[0021] Explanation of reference numerals in the attached figures

[0022] Filter chamber 10, exhaust gas outlet 11, filter 12, second differential pressure gauge 13, third differential pressure gauge 14, adsorption chamber 20, air-cooled pipe 21, thermometer interface 22, cooling gas inlet 23, cooling gas outlet 24, tail gas inlet buffer chamber 30, exhaust gas inlet 31, unloading port 32, first differential pressure gauge 33, thermometer and hygrometer interface 34, unloading baffle 35, unloading cover 36, tail gas buffer chamber 37, flange 40, bracket 50, fixing hole 51 Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0024] Please see Figure 1 , Figure 2 and Figure 3 The prototype of the vertical adsorption device for krypton-xenon tail gas of thorium-based molten salt reactor provided by this utility model includes an adsorption cylinder (not labeled in the figure). The adsorption cylinder is provided with a filter chamber 10, an adsorption chamber 20 and a tail gas inlet buffer chamber 30 from top to bottom. That is, the adsorption cylinder is divided into three parts: upper, middle and lower, and is placed vertically.

[0025] The filter chamber 10 is equipped with a filter 12, and the adsorption chamber 20 is filled with nuclear-grade activated carbon. The adsorption cylinder is a cylindrical, square, prismatic, or polygonal cylinder. The shape of the filter 12 is adapted to the shape of the adsorption cylinder. For example, if the adsorption cylinder is cylindrical, the filter 12 is also cylindrical, which facilitates the installation and disassembly of the filter 12 and improves its filtration performance.

[0026] The cylindrical filter can be made of glass fiber, polypropylene fiber, metal fiber, or composite material. The filter 12 effectively intercepts radioactive particles in the exhaust gas, preventing them from entering the subsequent adsorption bed or being released into the environment. By reducing the diffusion of radioactive materials, the safety of the entire exhaust gas treatment system is improved. The use of the filter chamber 10 protects the prototype vertical adsorption device, reduces system pressure drop, and serves as the first line of defense for the system, ensuring the efficient and safe operation of the entire exhaust gas treatment system.

[0027] Nuclear-grade activated carbon consists of granular particles (such as nuclear-grade coconut shell activated carbon particles). These particles have a high specific surface area and microporous structure, enabling them to capture krypton and xenon gas molecules through physical adsorption. The micropores of the activated carbon provide adsorption sites for gas molecules, thus separating them from the gas flow. Nuclear-grade activated carbon has higher adsorption capacity and stability, making it suitable for adsorbing radioactive inert gases. It can operate effectively within a wide temperature and humidity range, ensuring the reliability of the adsorption process. In addition to adsorbing krypton and xenon, nuclear-grade activated carbon can also adsorb other radioactive gases, organic impurities, and trace particulate matter, such as radioactive isotopes of iodine (I) (e.g., iodine-131). By adsorbing krypton and xenon in the krypton-xenon tail gas of thorium-based molten salt reactors, the concentration of radioactive gases in the tail gas can be significantly reduced, thus reducing radioactive pollution to the environment and improving the safety of nuclear reactor tail gas treatment systems.

[0028] Because the adsorption capacity of nuclear-grade activated carbon gradually decreases after long-term use, it is necessary to clean and replace it regularly. This utility model provides a discharge port 32 in the lower middle part of the exhaust gas inlet buffer chamber 30, and a discharge cover 36 on the discharge port 32. When cleaning and replacing, simply open the discharge cover 36, and the nuclear-grade activated carbon can be discharged directly from the discharge port 32 by gravity.

[0029] The exhaust gas inlet buffer chamber 30 is provided with an exhaust gas inlet 31, and the filter chamber 10 is provided with an exhaust gas outlet 11. The krypton-xenon exhaust gas from the thorium-based molten salt reactor enters the adsorption cylinder through the exhaust gas inlet 31, adsorbs krypton and xenon in the adsorption chamber 20, and is then filtered through the filter chamber 10 before being discharged from the exhaust gas outlet 11. The prototype vertical adsorption device for krypton-xenon exhaust gas from the thorium-based molten salt reactor provided by this utility model consists of an adsorption cylinder composed of a filter chamber 10, an adsorption chamber 20, and an exhaust gas inlet buffer chamber 30 arranged sequentially from top to bottom. This vertical structure allows the exhaust gas to enter from the bottom of the adsorption device, undergo adsorption and filtration, and then exit from the top, increasing the flowability of the exhaust gas. The exhaust gas first passes through the exhaust gas inlet buffer chamber 30, then enters the adsorption chamber 20 for krypton and xenon adsorption, and finally passes through the filter chamber 10 to filter residual particulate matter before being discharged. This multi-stage treatment ensures that the exhaust gas meets strict environmental standards before emission.

[0030] Furthermore, the adsorption chamber 20 is also equipped with an air-cooling pipe 21. The adsorption chamber 20 is equipped with a cooling gas inlet 23 and a cooling gas outlet 24. The two ends of the air-cooling pipe 21 are connected to the cooling gas inlet 23 and the cooling gas outlet 24, respectively. The cooling gas inlet 23 is connected to a cooling gas source. When the tail gas temperature is too high, it can be cooled by the air-cooling system, which can ensure that the activated carbon works within the optimal temperature range, improve the adsorption efficiency, avoid the influence of high temperature on the adsorption performance of activated carbon, ensure that the equipment can operate stably under different working conditions, and improve the reliability and adsorption effect of the system.

[0031] Please continue reading. Figures 1 to 3 In the prototype of the vertical adsorption device of this utility model, the adsorption chamber 20 is provided with several thermometer interfaces 22 for installing thermistors or thermometers. Thermistors or thermometers can be inserted into the adsorption chamber. When the temperature value detected by any thermistor or thermometer exceeds the set value, the cooling gas source connected to the cooling gas inlet 23 delivers cold gas to the air cooling pipe 21 to cool the krypton-xenon tail gas of the thorium-based molten salt reactor.

[0032] Optionally, there are 3-10 thermometer interfaces 22, which are equidistantly arranged on the side wall of the adsorption chamber 20. For example, when there are 6 thermometer interfaces 22, the distance between any two adjacent thermometer interfaces 22 is equal, so that the temperature changes at different positions in the adsorption chamber 20 can be monitored in real time, thereby gaining a comprehensive understanding of the temperature distribution of the entire adsorption chamber 20. If the temperature detected by the thermistor connected to one of the thermometer interfaces 22 exceeds the set value (e.g., 40°C), the valve at the cooling gas source is opened, allowing cold air to be introduced into the air-cooling pipe 21 to cool the exhaust gas and activated carbon, thereby improving the adsorption efficiency, reducing the decrease in adsorption performance caused by temperature fluctuations, and ensuring that krypton and xenon in the exhaust gas can be efficiently removed.

[0033] Furthermore, in the prototype of the vertical adsorption device of this utility model, a first differential pressure gauge 33 is installed on the tail gas inlet buffer chamber 30 above the exhaust gas inlet 31 to monitor the pressure state of the gas before it enters the adsorption bed. A second differential pressure gauge 13 is installed at the exhaust gas outlet 11 to monitor the pressure change of the gas after it passes through the entire adsorption bed, ensuring that the pressure value inside the adsorption cylinder is maintained at a slightly positive pressure. For example, when the ambient atmospheric pressure is 101 kPa, the pressure inside the adsorption cylinder is 102-105 kPa, preventing air from entering the adsorption device. At the same time, by obtaining the pressure difference between the tail gas at the exhaust gas inlet 31 and the exhaust gas outlet 11, it is possible to determine whether the activated carbon is unevenly filled or blocked, or whether the gas flow rate is too high, or whether there is an abnormal state in the adsorption cylinder of the vertical adsorption device prototype.

[0034] Furthermore, a third differential pressure gauge 14 is also provided on the filter chamber 10 to monitor the operating status of the filter chamber 10. By monitoring the pressure difference between the inside and outside of the filter chamber 10, the blockage of the filter can be detected in time, thus avoiding the leakage of radioactive gas due to filter failure.

[0035] This invention, by installing differential pressure gauges at different locations on a prototype vertical adsorption device, allows for comprehensive monitoring of pressure changes throughout the entire system, enabling timely detection of potential problems. If a differential pressure gauge displays an abnormality, data from other gauges can be combined to quickly pinpoint the problem (e.g., filter blockage, activated carbon blockage, or front-end equipment malfunction). Multi-point differential pressure monitoring ensures that radioactive gas does not leak during adsorption and treatment, improving system reliability and safety. Furthermore, the differential pressure data can be used to optimize system operating parameters, such as adjusting gas flow rate and controlling the adsorption bed temperature, ensuring the equipment operates at its best.

[0036] Please refer to it again. Figures 1 to 3In the prototype of the vertical adsorption device of this utility model, a thermometer and hygrometer interface 34 is also provided on one side of the exhaust gas inlet 31 on the tail gas inlet buffer chamber 30 to monitor the temperature and humidity of the exhaust gas entering the adsorption device in real time. The monitoring data of the thermometer and hygrometer can provide a basis for the cooling gas source on / off status. At the same time, knowing the inlet temperature helps to adjust the parameters of the adsorption process, ensuring that the activated carbon works within the optimal temperature range, thereby improving the adsorption efficiency of krypton and xenon. By monitoring the humidity, the inlet conditions can be adjusted in time to avoid the activated carbon from failing due to excessive humidity.

[0037] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, flanges 40 are provided at the connection ends of the filter chamber 10, adsorption chamber 20, and tail gas inlet buffer chamber 30. The filter chamber 10, adsorption chamber 20, and tail gas inlet buffer chamber 30 are connected by bolts. The flange connection allows for quick disassembly and reassembly of the filter chamber 10, adsorption chamber 20, and tail gas inlet buffer chamber 30, thereby facilitating the maintenance, cleaning, or replacement of components (such as activated carbon or filter elements) in each chamber.

[0038] Furthermore, a sealing gasket (not labeled in the figure) is provided between the filter chamber 10, the adsorption chamber 20, and the exhaust gas inlet buffer chamber 30. The gasket and bolts are used to fasten the gasket, which can provide a reliable sealing effect and prevent the leakage of radioactive gas.

[0039] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, an inclined unloading baffle 35 is provided in the tail gas inlet buffer chamber 30. The unloading baffle 35 is provided with permeable micropores to ensure that the tail gas can pass smoothly. The permeable micropores are about 0.1 to 1.0 mm in size and are evenly distributed on the unloading baffle 35. This not only ensures that the tail gas can pass smoothly and avoids the increase in pressure drop caused by the baffle blocking, but also prevents waste materials (such as activated carbon particles) from entering the tail gas buffer chamber 37, thereby improving the operating efficiency of the entire system.

[0040] The unloading baffle 35 divides the exhaust gas inlet buffer chamber 30 into an exhaust gas buffer chamber 37 and an activated carbon dust collection chamber (not labeled in the figure). The exhaust gas buffer chamber 37 is used to buffer and diffuse the exhaust gas input from the exhaust gas inlet 31, filling the exhaust gas buffer chamber 37 and allowing the exhaust gas to enter the adsorption chamber 20 evenly. The unloading port 32 is located at the activated carbon dust collection chamber and is inclined downwards. When unloading waste materials (such as waste activated carbon), the material can be unloaded quickly. When adding new activated carbon particles, the flange at the connection between the filter chamber 10 and the adsorption chamber 20 can be disassembled, or the flange at the connection between the adsorption chamber 20 and the exhaust gas inlet buffer chamber 30 can be used for quick addition.

[0041] In the prototype of the vertical adsorption device for krypton-xenon tail gas from the thorium-based molten salt reactor, the cooling gas inlet 23 is located at the upper part of the adsorption chamber 20, and the cooling gas outlet 24 is located at the lower part of the adsorption chamber 20. This allows the cooling gas to enter the adsorption chamber 20 from the top, flow downwards, and fully contact the tail gas. The top-down flow path ensures that the cooling gas absorbs the heat of the tail gas evenly during its passage through the entire adsorption chamber 20, thereby achieving a more efficient cooling effect. The air-cooling pipe 21 is spirally arranged in the adsorption chamber 20, which increases the path of the cooling gas in the adsorption chamber 20, further ensuring that the cooling gas absorbs the heat of the tail gas evenly during its passage through the entire adsorption chamber 20.

[0042] In this embodiment, the cooling gas inlet 23 is located at the upper part of the adsorption chamber 20, and the cooling gas outlet 24 is located at the lower part of the adsorption chamber 20. After the cooling gas enters the adsorption chamber 20 from the top, it flows downward along the spirally arranged air-cooling pipe 21 and exchanges heat with the tail gas in a countercurrent manner. This not only ensures that the cooling gas is evenly distributed in the adsorption chamber 20, but also maximizes the heat exchange efficiency, reducing the tail gas temperature to below a set value (such as 40°C). This ensures that the activated carbon works within the optimal temperature range and improves the adsorption efficiency.

[0043] The exhaust gas inlet buffer chamber 30 is equipped with a support 50 for vertically placing the vertical adsorption device, ensuring the prototype stands upright. Optionally, three supports 50 are provided, each positioned at one of the three equal points of the waste collection chamber 30. This evenly distributes the weight of the vertical adsorption device prototype, ensuring stability on its placement surface (e.g., the ground) and preventing tipping due to instability. Furthermore, the tri-point positioning optimizes the stress distribution on the supports 50, improving the overall stability of the device.

[0044] Furthermore, the bracket 50 has a mounting part that is fixed to the exhaust gas inlet buffer chamber 30, and a support part that is fixed to the placement position (such as the ground). The support part is provided with a fixing hole 51, and the bracket 50 can be fixed to the plane of the placement position (such as the ground) by inserting bolts into the fixing hole 51.

[0045] In summary, the prototype vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor provided by this invention adopts a vertical structure, with the tail gas entering from the bottom and exiting from the top after multi-stage treatment. This increases the flowability of the tail gas and improves the treatment efficiency. By filling the adsorption chamber 20 with nuclear-grade activated carbon, it can efficiently adsorb radioactive krypton (Kr) and xenon (Xe) gases in the tail gas, significantly reducing the concentration of krypton and xenon in the tail gas, reducing the emission of radioactive gases, and reducing potential hazards to the environment and public health.

[0046] The prototype vertical adsorption device consists of a tail gas inlet buffer chamber 30, an adsorption chamber 20, and a filter chamber 10 arranged sequentially from top to bottom. The tail gas first passes through the tail gas inlet buffer chamber 30 to remove large particulate impurities, then enters the adsorption chamber 20 for the adsorption of krypton and xenon, and finally passes through the filter chamber 10 to filter out residual particulate matter before being discharged. This ensures that the tail gas meets strict environmental standards before emission, effectively preventing the leakage of radioactive materials and protecting environmental safety.

[0047] This invention also monitors the humidity of the adsorption chamber 20 in real time, and by setting an air-cooling pipe 21 in the adsorption chamber 20, the cooling gas enters from the top, flows downward and fully contacts the tail gas. The air-cooling pipe 21 is arranged in a spiral manner to achieve a more efficient cooling effect. When the tail gas temperature is too high, the air-cooling system can be started quickly to ensure that the activated carbon works within the optimal temperature range, improve the adsorption efficiency, avoid the influence of high temperature on the adsorption performance of activated carbon, and ensure that the equipment operates stably under different working conditions.

[0048] Meanwhile, by monitoring temperature and pressure difference in real time, abnormal situations in equipment operation (such as blockages, abnormal temperatures, etc.) can be detected in a timely manner, and corresponding measures can be taken to ensure the safe operation of the equipment and meet the safety standards of the nuclear industry.

[0049] In addition, the filter chamber 10, adsorption chamber 20 and exhaust gas inlet buffer chamber 30 are connected by flange 40 and bolts, which facilitates quick disassembly and reassembly. An inclined discharge baffle 35 and discharge port 32 are set in the exhaust gas inlet buffer chamber 30 to facilitate cleaning of waste and replacement of adsorption materials, which improves the maintainability of the equipment, reduces maintenance difficulty and time cost, and ensures the safe disposal of waste.

[0050] It is understood that those skilled in the art can make equivalent substitutions or changes based on the technical solution and inventive concept of this utility model, and all such substitutions or changes should fall within the protection scope of the appended claims of this utility model.

Claims

1. A vertical adsorption device prototype of thorium-based molten salt reactor krypton-xenon tail gas, characterized in that, The device includes an adsorption cylinder, which is provided with a filter chamber (10), an adsorption chamber (20) and a tail gas inlet buffer chamber (30) from top to bottom. The filter chamber (10) is provided with a filter (12). The adsorption chamber (20) is filled with nuclear-grade activated carbon. The tail gas inlet buffer chamber (30) is provided with a waste gas inlet (31). The filter chamber (10) is provided with a waste gas outlet (11). The adsorption chamber (20) is also provided with a gas cooling pipe (21). The adsorption chamber (20) is provided with a cooling gas inlet (23) and a cooling gas outlet (24). The lower middle part of the tail gas inlet buffer chamber (30) is provided with a discharge port (32). The krypton-xenon tail gas of the thorium-based molten salt reactor enters the adsorption cylinder from the waste gas inlet (31), adsorbs krypton and xenon in the adsorption chamber (20), and is discharged from the waste gas outlet (11) after being filtered by the filter chamber (10).

2. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, The adsorption chamber (20) is provided with several thermometer interfaces (22) for installing thermistors or thermometers. When the temperature value detected by any thermistor or thermometer exceeds the set value, the cooling gas source connected to the cooling gas inlet (23) delivers cold gas to the air cooling pipe (21) to cool the krypton-xenon tail gas of the thorium-based molten salt reactor.

3. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, A first differential pressure gauge (33) is provided on the exhaust gas inlet buffer chamber (30) above the exhaust gas inlet (31), and a second differential pressure gauge (13) is provided at the exhaust gas outlet (11).

4. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 3, characterized in that, A third differential pressure gauge (14) is also provided on the filter chamber (10).

5. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, A thermometer and hygrometer interface (34) is also provided on one side of the exhaust gas inlet (31) on the exhaust gas inlet buffer chamber (30).

6. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, The filter chamber (10), adsorption chamber (20), and exhaust gas inlet buffer chamber (30) are connected by flanges (40), and the filter chamber (10), adsorption chamber (20), and exhaust gas inlet buffer chamber (30) are connected by bolts.

7. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, The exhaust gas inlet buffer chamber (30) is provided with a bracket (50) for placing the vertical adsorption device vertically.

8. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, An inclined unloading baffle (35) is provided in the exhaust gas inlet buffer chamber (30). The unloading baffle (35) is provided with air-permeable micropores. The unloading baffle (35) divides the exhaust gas inlet buffer chamber (30) into an exhaust gas buffer chamber (37) and an activated carbon dust collection chamber. The unloading port (32) is located in the activated carbon dust collection chamber and is inclined downward. The unloading port (32) is provided with an unloading cover.

9. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 1, characterized in that, The cooling gas inlet (23) is located at the upper part of the adsorption chamber (20), the cooling gas outlet (24) is located at the lower part of the adsorption chamber (20), and the air cooling pipe (21) is spirally arranged in the adsorption chamber (20).

10. The prototype of the vertical adsorption device for krypton-xenon tail gas from a thorium-based molten salt reactor according to claim 2, characterized in that, The thermometer interface (22) consists of 3-10 ports, which are equidistantly arranged on the side wall of the adsorption chamber (20).

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