Radioactive carbon solidification method and solidification equipment

Abstract

A method and device for curing radioactive carbon. The curing method comprises: mixing radioactive carbon with a reactant for curing radioactive carbon into a mixture; heating the mixture so that the radioactive carbon in the mixture starts to react with the reactant to generate heat; and stopping heating at least part of the time during the reaction between the radioactive carbon and the reactant, and the heat required for the reaction at at least part of the time is supplied by the heat generated by the reaction before at least part of the time to generate a solidified product. The method and device for curing radioactive carbon can ensure the curing effect of radioactive carbon and prevent the leakage of radioactive substances from causing harm to humans and other various organisms as well as the environment.

Description

Technical Field

[0001] The present application relates to the technical field of material processing, and in particular to a method and device for solidifying radioactive carbon. Background Art

[0002] The development of nuclear energy has brought great social and economic benefits to mankind, but it has also produced a large amount of radioactive nuclear waste, such as radiocarbon, which can cause great harm to humans and other organisms.

[0003] The treatment of radioactive carbon can be solidified, and the cold crucible is a commonly used device in the solidification treatment. The cold crucible glass solidification technology has the characteristics of high working temperature, wide treatment range, long service life, uniform melt, small equipment size, and easy decommissioning. The cold crucible glass solidification technology can be used not only for low and medium level radioactive wastes such as solid waste, resin, and concentrate generated by nuclear power plants; it can also be used for high level radioactive waste liquid and some other highly corrosive and difficult to treat wastes. Therefore, the research progress of this technology has received widespread attention. In the operation of nuclear power, a large amount of radioactive waste is bound to be generated. Among them, the high level radioactive waste liquid generated by the reprocessing of spent fuel has the characteristics of high radioactive specific activity, high heat release rate, and contains some nuclides with long half-life and high biological toxicity. Its treatment and disposal has become one of the key issues restricting the sustainable development of nuclear power and nuclear fuel cycle industry. As a new nuclear waste treatment technology, the cold crucible glass solidification technology has its unique advantages in the treatment of nuclear power waste and high level radioactive waste liquid.

[0004] The cold crucible is a circular or elliptical container composed of several arc blocks or tubes. Cooling water is passed into the arc blocks or tubes to maintain the cold wall. The gaps between the arc blocks or tubes are filled with insulating materials. The internal materials are heated by electromagnetic fields. There is a water-cooled coil wound by copper tubes outside the cold crucible. Since the cold crucible adopts a water-cooled structure, a layer of solid glass shell will be formed in the area with low temperature near the cooling tube, which avoids the corrosion of the cold crucible by the molten material. The cold crucible glass solidification system mainly includes: cold crucible, feeding subsystem, glass discharging subsystem, flue gas purification subsystem and instrument control system. There are three main forms of cold crucible glass solidification process, namely: two-step glass solidification process, one-step glass solidification process and one-step incineration glass solidification process. The two-step glass solidification process is to first calcine the waste liquid in a calcining furnace, mix it with the glass base material, and send it to a cold crucible; the one-step glass solidification process is to directly send the waste liquid and the glass base material into a cold crucible; the one-step incineration glass solidification process is to mix the combustible solid waste with the glass base material and send it to a cold crucible. The first two processes are mainly used to treat waste liquids, and the latter process is mainly used to treat solid wastes.

[0005] According to different usage methods, electromagnetic cold crucibles can be divided into two types: intermittent type and continuous casting type, but the basic principle is the same, mainly composed of water-cooled crucibles, power supplies and other auxiliary facilities. A spiral induction coil is wound around the crucible, and the induction coil is connected to the power supply to generate an alternating electromagnetic field. When an alternating current is passed through the coil, an alternating electromagnetic field is generated inside and around the coil. Since each metal tube of the cold crucible is insulated from each other, an induced current is generated in each tube. When the instantaneous current of the induction coil is counterclockwise, an induced current in the cross section of each tube is simultaneously generated in the clockwise direction, and the current directions on the cross sections of the two adjacent tubes are opposite. The magnetic fields established between the tubes are in the same direction, which is manifested as a magnetic field enhancement effect outward. Therefore, each gap in the cold crucible is a strong magnetic field. The cold crucible, like a current enhancer, gathers the magnetic lines of force on the material in the crucible, and the material in the crucible is cut by the magnetic lines of force of this alternating magnetic field. According to electromagnetic field theory, an induced electromotive force is generated in the material in the crucible. Due to the existence of the induced electromotive force, a closed current loop will be formed in the thin layer on the surface of the melt. This current is usually called eddy current, and the size of the eddy current obeys Ohm's law. Since the resistance of the eddy current loop is usually very small, it can reach a very high value, causing the eddy current loop to generate a lot of heat, thereby melting the metal, and the heat can be determined by Ohm's law.

[0006] However, the radioactive carbon solidification method and solidification equipment in the related art are not effective in solidifying radioactive carbon. Specifically, the volume of the generated solidified material is small, which makes it easy for radioactive substances to leak, thereby causing harm to humans and other various organisms as well as the environment. Summary of the invention

[0007] According to a first aspect of the present application, a method for solidifying radioactive carbon is provided, comprising: mixing the radioactive carbon with a reactant for solidifying the radioactive carbon into a mixture; heating the mixture so that the radioactive carbon in the mixture begins to react with the reactant to generate heat; and stopping the heating at least partially during the reaction of the radioactive carbon with the reactant, the heat required for the reaction at at least partially being supplied by the heat generated by the reaction before at least partially, so as to generate a solidified product.

[0008] According to a second aspect of the present application, a radioactive carbon solidification device is provided, comprising: a heater configured to heat a mixture of the radioactive carbon and a reactant for solidifying the radioactive carbon, so that the radioactive carbon in the mixture begins to react with the reactant to generate heat; the heater is configured to stop heating at least part of the time during the reaction of the radioactive carbon and the reactant, and the heat required for the reaction at at least part of the time is supplied by the heat generated by the reaction before at least part of the time, so as to generate a solidified material. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Other objects and advantages of the present application will be apparent from the following description of the present application with reference to the accompanying drawings, and will help to provide a comprehensive understanding of the present application.

[0010] Figure 1 is a schematic diagram of a curing method according to an embodiment of the present application;

[0011] Figure 2 is a schematic diagram of a curing device according to a first embodiment of the present application;

[0012] Figure 3 is a schematic diagram of a curing device according to a second embodiment of the present application;

[0013] Figure 4 is a schematic diagram of a curing device according to a third embodiment of the present application;

[0014] Figure 5 It is a schematic diagram of a curing device according to the fourth embodiment of the present application.

[0015] It should be noted that the drawings are not necessarily drawn to scale, but are merely shown in a schematic manner that does not affect the reader's understanding.

[0016] In the figure, 10 is a curing device, 100 is a heater, 110 is a first induction coil, 120 is a first power supply, 130 is a second induction coil, 140 is a second power supply, 200 is a first reaction container, 300 is a first ventilation device, 400 is a second reaction container, and 500 is a second ventilation device. DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiment is one embodiment of the present application, not all embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0018] Unless otherwise defined, technical or scientific terms used in this application should have the common meanings understood by persons having ordinary skills in the field to which this application belongs.

[0019] The embodiments of the present application provide a method and device 10 for solidifying radioactive carbon. Radioactive carbon is a radioactive carbon-containing substance, such as radioactive carbon black, graphite, etc. Such radioactive carbon is widely present in various places such as nuclear power plants and nuclear power plants. It is understandable that the wastes in places such as nuclear power plants and nuclear power plants usually contain various radioactive nuclear wastes, such as radioactive carbon. If such radioactive carbon is directly discharged into the environment, it will cause great harm to humans and other various organisms as well as the environment. The method and device 10 for solidifying radioactive carbon provided in the embodiments of the present application can effectively solve such problems.

[0020] Understandably, solidification can refer to the process of processing radioactive materials into glass. Glass can solidify all components of radioactive materials, has low leaching rate and relatively good chemical stability. By solidifying radioactive carbon into glass, leakage of radioactive materials can be avoided and user experience can be improved.

[0021] Figure 1 is a schematic diagram of a curing method according to an embodiment of the present application, such as Figure 1 As shown, the curing method of the embodiment of the present application may include:

[0022] Step S102, mixing radioactive carbon with a reactant for fixing radioactive carbon into a mixture.

[0023] Step S104, heating the mixture so that the radioactive carbon in the mixture starts to react with the reactant to generate heat.

[0024] Step S106, stopping heating at least partially during the reaction of the radioactive carbon and the reactant, wherein the heat required for the reaction at least partially during the reaction is supplied by the heat generated by the reaction before the at least partially during the reaction, so as to generate a solidified product.

[0025] It can be understood that in some embodiments, the reactants used to solidify the radioactive carbon in step S102 may be Ti or TiO2, and in other embodiments, the reactants may be other various substances that can solidify the radioactive carbon.

[0026] Since it is difficult or impossible for radioactive carbon to react with reactants at room temperature, the mixture is heated in step S104 so that the radioactive carbon in the mixture starts to react with the reactants. It can be understood that the radioactive carbon in the mixture starts to react with the reactants to generate heat, that is, the reaction of the radioactive carbon in the mixture with the reactants is itself an exothermic reaction.

[0027] Specifically, when the reactant is Ti, radioactive carbon may react with Ti to generate TiC. At this time, the chemical equation (1) of the reaction is as follows:

[0028] Ti+C=TiC (1)

[0029] When the reactant is TiO2, part of the radioactive carbon may react with the Ti element in TiO2 to generate TiC, and the other part of the radioactive carbon may react with the O element in TiO2 to generate CO2. At this time, the chemical equation (2) of the reaction is as follows:

[0030] TiO2+2C=TiC+CO2 (2)

[0031] Alternatively, when the reactant is TiO2, part of the radioactive carbon may react with the Ti element in TiO2 to generate TiC, and another part of the radioactive carbon may react with the O element in TiO2 to generate CO. In this case, the chemical equation (3) of the reaction is as follows:

[0032] TiO2+3C=TiC+2CO (3)

[0033] Alternatively, when the reactant is TiO2, part of the radioactive carbon may react with the Ti element in TiO2 to generate TiC, another part of the radioactive carbon may react with the O element in TiO2 to generate CO, and another part of the radioactive carbon may react with the O element in TiO2 to generate CO2. In this case, the chemical equation of the reaction includes both the above chemical equation (2) and the above chemical equation (3).

[0034] Preferably, the reactant may be Ti, which can reduce the generation of gases such as CO or CO2 from radioactive carbon, thereby preventing radioactive carbon from polluting the air environment and improving the solidification effect of radioactive carbon, thereby further preventing radioactive carbon from causing great harm to humans and other organisms as well as the environment.

[0035] TiC belongs to the face-centered cubic crystal system, has stable chemical and physical properties, and has extremely high melting point, hardness and strength, as well as excellent wear resistance, corrosion resistance and thermal shock resistance, thus ensuring the solidification effect of radioactive carbon.

[0036] In step S106, heating is stopped at least part of the time during the reaction of the radioactive carbon and the reactant, and the heat required for the reaction at least part of the time is supplied by the heat generated by the reaction before at least part of the time to generate a solidified product. In other words, when heating is stopped, the reaction can also be carried out, and by stopping heating at least part of the time during the reaction, the temperature is prevented from being too high and the (single particle) volume of the generated solidified product is small. If continuous heating is performed during the reaction of the radioactive carbon and the reactant, a powdered solidified product will be generated, i.e., the (single particle) volume of the solidified product is small. This method of the embodiment of the present application makes the (single particle) volume of the generated solidified product larger and has a large specific surface area, for example, it can be a blocky solidified product, thereby ensuring the curing effect on the radioactive carbon.

[0037] In some embodiments, after the heating is stopped for the first time, the heat required for the reaction of the radiocarbon with the reactants at any time is supplied by the heat generated by the reaction before that time.

[0038] That is to say, after the heating is stopped for the first time, all subsequent reaction processes will no longer be heated, thereby ensuring that the volume of the generated solidified material (single particle) is large and it is easy to obtain a block-shaped solidified material, thereby ensuring the solidification effect of the radioactive carbon.

[0039] It can be understood that the time of the first heating can be a fixed time threshold, for example, the time threshold can be any value between greater than 0s and less than 2s, such as 0.1s, 0.2s, 0.3s, 0.4s, 0.5s, 0.6s, 0.7s, 0.8s, 0.9s, 1.0s, 1.2s, 1.3s, 1.4s, 1.5s, 1.6s, 1.7s, 1.8s, 1.9s, 2.0s, etc. In other embodiments, the time threshold can also be greater than 2s.

[0040] The time of the first heating can also be determined according to the phenomenon of the reaction. For example, when it is determined that the reaction has started, the first heating can be stopped. How to determine whether the reaction has started can be selected according to the type of reactants. For example, when the reactant is Ti, it can be determined whether the reaction has started according to the material properties of the combined TiC. For example, when crystals appear in the mixture, it is considered that the reaction has started. For another example, when the reactant is TiO2, when gas is generated, it is considered that the reaction has started.

[0041] Figure 2is a schematic diagram of a curing device according to the first embodiment of the present application (the dotted lines in the figure represent magnetic flux lines). In the embodiment of the present application, heating the mixture may include: placing the mixture in a first reaction container 200, placing the first reaction container 200 at a position corresponding to the first induction coil 110; energizing the first induction coil 110 so that the first induction coil 110 generates a magnetic field that passes through the first reaction container 200 and causes the radioactive carbon to generate heat, so as to heat the mixture.

[0042] The first reaction container 200 may be formed of various materials that can pass through a magnetic field, such as quartz. That is, in some embodiments, the first reaction container 200 may be a quartz tube, which has a low cost.

[0043] The first induction coil 110 itself does not generate heat, so the first induction coil 110 has a long service life, does not require maintenance, has no maintenance and replacement costs, and has the advantages of easy control of temperature and heating time, while having significant energy-saving effects, greatly reducing costs, and has a short preheating time, which greatly improves efficiency.

[0044] The solidification method may further include: during the reaction of the radioactive carbon with the reactant, introducing a solidification gas into the first reaction vessel 200 to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

[0045] The solidification gas may be any gas that can reduce the reaction between radioactive carbon and oxygen, such as nitrogen, etc. The method provided in the embodiment of the present application can prevent the radioactive carbon-generated gas from leaking into the air, thereby improving the solidification effect of the radioactive carbon.

[0046] In some embodiments of the present application, the solidified gas is discharged to the outside of the first reaction vessel 200 after flowing through the area corresponding to the mixture. Thus, the gas can be discharged in time to avoid the first reaction vessel 200 from being subjected to pressure, ensure that the reaction process can proceed smoothly, and protect various devices required in the reaction.

[0047] Figure 3 is a schematic diagram of a curing device 10 according to a second embodiment of the present application (the dotted lines in the figure represent magnetic flux lines, and the solid lines represent the flow direction of the gas), as shown in FIG. Figure 3 As shown, the solidification gas may be introduced through the first ventilation device 300 .

[0048] Figure 4It is a schematic diagram of a curing device 10 according to a third embodiment of the present application (the dotted lines in the figure represent magnetic flux lines). In the embodiment of the present application, heating the mixture may include: placing the mixture in a second reaction container 400, and placing the second reaction container 400 at a position corresponding to the second induction coil 130; energizing the second induction coil 130 so that the second induction coil 130 generates a magnetic field that causes the second reaction container 400 to generate heat, so as to heat the mixture.

[0049] Among them, the second reaction container 400 can be formed of various materials that can generate heat under the action of a magnetic field, for example, metal. That is to say, in some embodiments, the second reaction container 400 can be a metal container, which is not easily damaged and is easy to preserve.

[0050] The second induction coil 130 itself does not generate heat, so the second induction coil 130 has a long service life, does not require maintenance, has no maintenance and replacement costs, and has the advantages of easy control of temperature and heating time, while having significant energy-saving effects, greatly reducing costs, and has a short preheating time, which greatly improves efficiency.

[0051] The solidification method may further include: during the reaction of the radioactive carbon with the reactant, introducing a solidification gas into the second reaction vessel 400 to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

[0052] The solidification gas may be any gas that can reduce the reaction between radioactive carbon and oxygen, such as nitrogen, etc. The method provided in the embodiment of the present application can prevent the radioactive carbon-generated gas from leaking into the air, thereby improving the solidification effect of the radioactive carbon.

[0053] In some embodiments of the present application, the solidified gas is discharged outside the second reaction vessel 400 after flowing through the area corresponding to the mixture. Thus, the gas can be discharged in time to avoid the second reaction vessel 400 from being subjected to pressure, ensure that the reaction process can proceed smoothly, and protect various devices required in the reaction.

[0054] Figure 5 is a schematic diagram of a curing device 10 according to a fourth embodiment of the present application (the dotted lines in the figure represent magnetic flux lines, and the solid lines represent the flow direction of the gas), as shown in FIG. Figure 5 As shown, the solidification gas may be introduced through the second ventilation device 500 .

[0055] In some embodiments, a shell may be further disposed in the first reaction container 200 or the second reaction container 400. The shell is used to place the mixture, and the shell may be made of ZrO2.

[0056] The embodiment of the present application also provides a radioactive carbon solidification device 10, which includes a heater 100. The heater 100 is configured to heat a mixture of radioactive carbon and reactants for solidifying the radioactive carbon, so that the radioactive carbon in the mixture begins to react with the reactants to generate heat; the heater 100 is configured to stop heating at least part of the time during the reaction process of the radioactive carbon and the reactants, and the heat required for the reaction at at least part of the time is supplied by the heat generated by the reaction before at least part of the time to generate a solidified material.

[0057] In some embodiments, after the heating is stopped for the first time, the heat required for the reaction of the radiocarbon with the reactants at any time is supplied by the heat generated by the reaction before that time.

[0058] In some embodiments, the curing device 10 further includes a first reaction container 200, and the first reaction container 200 is used to place the mixture. The heater 100 may include a first induction coil 110 and a first power supply 120, wherein the first induction coil 110 is placed at a position corresponding to the first reaction container 200, and the first power supply 120 is configured to energize the first induction coil 110 so that the first induction coil 110 generates a magnetic field that passes through the first reaction container 200 to cause the radioactive carbon to generate heat, thereby heating the mixture.

[0059] In some embodiments, the solidification device 10 may further include a first ventilation device 300, which is configured to introduce solidification gas into the first reaction container 200 during the reaction of the radioactive carbon with the reactant to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

[0060] In some embodiments, the solidifying gas is exhausted out of the first reaction container 200 after flowing through the area corresponding to the mixture.

[0061] In some embodiments, the curing device 10 may further include a second reaction container 400 for placing the mixture. The heater 100 includes a second induction coil 130 and a second power supply 140, wherein the second induction coil 130 is disposed at a position corresponding to the second reaction container 400, and the second power supply 140 is configured to energize the second induction coil 130 so that the second induction coil 130 generates a magnetic field that causes the second reaction container 400 to generate heat, thereby heating the mixture.

[0062] In some embodiments, the solidification device 10 may further include a second ventilation device 500, which is configured to introduce solidification gas into the second reaction container 400 during the reaction of the radioactive carbon with the reactant to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

[0063] In some embodiments, the solidifying gas is exhausted out of the second reaction container 400 after flowing through the area corresponding to the mixture.

[0064] It can be understood that the first power supply 120 and the second power supply 140 in the curing device 10 can be high-frequency power supplies. The relevant contents about the first induction coil 110, the second induction coil 130, the first reaction container 200, the second reaction container 400, the first ventilation device 300 and the second ventilation device 500 of the curing device 10 and other contents related to curing can be referred to the aforementioned embodiments and will not be repeated here.

[0065] The curing method and curing device 10 provided by the embodiment of the present application, stop heating at least part of the time during the reaction process of radioactive carbon and reactants, the heat required for the reaction at least part of the time is supplied by the heat generated by the reaction before at least part of the time, to generate a solidified material, it can be understood that the radioactive carbon can be a radioactive carbon element, such as radioactive carbon black, graphite, etc., or other radioactive carbon-containing substances. In other words, when the heating is stopped, the reaction can also be carried out, and by stopping the heating at least part of the time during the reaction process, it is avoided that the temperature is too high and the (single particle) volume of the generated solidified material is small, if the continuous heating during the reaction process of radioactive carbon and reactants will generate a powdered solidified material, that is, the (single particle) volume of the solidified material is small, with a large specific surface area. This method of the embodiment of the present application makes the (single particle) volume of the generated solidified material larger, for example, it can be a block solidified material, thereby ensuring the curing effect of radioactive carbon.

[0066] Regarding the embodiments of the present application, it should also be noted that, in the absence of conflict, the embodiments of the present application and the features therein can be combined with each other to obtain new embodiments.

[0067] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. The protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A method for fixing radioactive carbon, wherein: include: mixing the radioactive carbon with a reactant for fixing the radioactive carbon into a mixture; Inductively heating the mixture so that the radioactive carbon in the mixture begins to react with the reactant to generate heat; and Stop heating at least part of the time during the reaction of the radioactive carbon and the reactant, the heat required for the reaction at least part of the time is supplied by the heat generated by the reaction before at least part of the time, so as to generate a solidified material; After the heating is stopped for the first time, the heat required for the reaction of the radioactive carbon with the reactant at any time is supplied by: the heat generated by the reaction before any time; The time of the first heating is a fixed time threshold, and the time threshold is any value between greater than 0s and less than 2s; During the reaction of the radioactive carbon with the reactant, a solidifying gas is introduced into the first reaction container (200) to reduce the reaction of the radioactive carbon with oxygen in the reaction space; The reactant is Ti or TiO2; The mixture is subjected to induction heating, comprising: placing the mixture in a first reaction container (200), and placing the first reaction container (200) at a position corresponding to the first induction coil (110); Powering the first induction coil (110) so that the first induction coil (110) generates a magnetic field that passes through the first reaction container (200) and causes the radioactive carbon to generate heat, thereby heating the mixture; placing the mixture in a second reaction container (400), and placing the second reaction container (400) at a position corresponding to the second induction coil (130); Powering the second induction coil (130) so that the second induction coil (130) generates a magnetic field that causes the second reaction container (400) to generate heat, thereby heating the mixture; The solidified gas is discharged out of the first reaction container (200) after flowing through the area corresponding to the mixture.

2. The curing method according to claim 1, wherein: Also includes: During the reaction of the radioactive carbon with the reactant, a solidifying gas is introduced into the second reaction container (400) to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

3. The curing method according to claim 2, wherein: The solidified gas is discharged out of the second reaction container (400) after flowing through the area corresponding to the mixture.

4. A radioactive carbon fixation device (10), wherein: include: A heater (100) configured to inductively heat a mixture of the radioactive carbon and a reactant for solidifying the radioactive carbon, so that the radioactive carbon in the mixture starts to react with the reactant to generate heat; The heater (100) is configured to stop heating at least partially during the reaction process of the radioactive carbon and the reactant, and the heat required for the reaction at least partially during the reaction is supplied by the heat generated by the reaction before the at least partially during the reaction, so as to generate a solidified material; After the heating is stopped for the first time, the heat required for the reaction of the radioactive carbon with the reactant at any time is supplied by: the heat generated by the reaction before any time; The time of the first heating is a fixed time threshold, and the time threshold is any value between greater than 0s and less than 2s; A first ventilation device (300) is configured to introduce solidification gas into the first reaction container (200) during the reaction of the radioactive carbon with the reactant to reduce the reaction of the radioactive carbon with oxygen in the reaction space; The reactant is Ti or TiO2; The first reaction container (200) is used to place the mixture; the heater (100) comprises: A first induction coil (110) is placed at a position corresponding to the first reaction container (200); A first power source (120) is configured to energize the first induction coil (110) so that the first induction coil (110) generates a magnetic field that passes through the first reaction container (200) and causes the radioactive carbon to generate heat, thereby heating the mixture; The second reaction container (400) is used to place the mixture; the heater (100) comprises: A second induction coil (130) is placed at a position corresponding to the second reaction container (400); a second power source (140) configured to energize the second induction coil (130) so that the second induction coil (130) generates a magnetic field that causes the second reaction container (400) to generate heat, thereby heating the mixture; The solidified gas is discharged out of the first reaction container (200) after flowing through the area corresponding to the mixture.

5. The curing device (10) according to claim 4, wherein: Also includes: The second ventilation device (500) is configured to introduce solidification gas into the second reaction container (400) during the reaction of the radioactive carbon with the reactant, so as to reduce the reaction of the radioactive carbon with oxygen in the reaction space.

6. The curing device (10) according to claim 5, wherein: The solidified gas is discharged out of the second reaction container (400) after flowing through the area corresponding to the mixture.

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