Tritium and carbon sampling device for preventing crystallization and nuclear power station waste gas treatment system

Abstract

The utility model relates to a tritium carbon sampling device for preventing crystallization and a nuclear power station waste gas treatment system, the tritium carbon sampling device comprises an absorption module, a cooling module and a cleaning module, the absorption module comprises a plurality of absorption bottles which are communicated in sequence to form an absorption passage, and the absorption passage comprises a head end and a tail end; the cooling module comprises cooling coils, and each absorption bottle is provided with a cooling coil; cleaning liquid is arranged in the cleaning module, the cleaning module communicates with the head end and the tail end to form a cleaning loop, and the cleaning loop is used for providing a circulation loop for the cleaning liquid to clean scale on the cooling coil. According to the tritium and carbon sampling device capable of preventing crystallization in the structural form, crystallization can be prevented from being generated outside the cooling coil, and meanwhile, the absorption effect of tritium and carbon gas can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of radioactive monitoring of reactors, in particular to a tritium carbon sampling device for preventing crystallization and a nuclear power plant waste gas treatment system. Background Art

[0002] Tritium carbon sampling device is used to absorb and concentrate radioactivity 14 C. 3 The device includes a gas metering module, a catalytic module, an absorption module, a semiconductor refrigeration module, etc. For the absorption of tritium gas (represented by HT) and hydrogen-oxygen-tritium gas (represented by HTO), the HTO gas is first captured by the absorption liquid in the first and second absorption bottles, and the HT in the gas is catalytically oxidized by the catalytic oxidation unit to form HTO, which is captured in the third and fourth absorption bottles. For the carbon isotope carbon dioxide (represented by 14 CO2), carbon isotope hydrocarbons (expressed by H 14 C represents) gas absorption, 14 The CO2 gas is first captured by the alkaline absorption liquid (such as sodium hydroxide solution) in the first absorption bottle and the second absorption bottle. 14 The C gas is catalytically oxidized by the catalytic oxidation unit to 14 CO2 is absorbed by the alkaline absorption liquid in the third and fourth absorption bottles; the gas absorbed by the tritium carbon sampling device is discharged.

[0003] After the tritium carbon sampling device has been used for a period of time, it is very easy to scale on the cooling coil in the absorption bottle and the outer surface of the aeration unit. The scaling on the cooling coil will seriously affect the heat exchange between the coolant and the absorption liquid, and then affect the solubility of the gas in the absorption liquid, so that the absorbed substances cannot be absorbed by the absorption liquid in time, and then affect the absorption capacity of the tritium carbon sampling device, and then affect the detection accuracy. The structure of the outer surface of the aeration unit will affect the aeration performance of the aeration unit, so that the gas cannot be well dispersed, and it will also affect the mass transfer performance of the gas and the absorption liquid, and also affect the absorption capacity and detection accuracy of the tritium carbon sampling device. Utility Model Content

[0004] Based on this, it is necessary to provide a tritium carbon sampling device and exhaust gas treatment system that prevents crystallization in order to address the technical problem that scaling of the cooling coil in the tritium carbon sampling device in the prior art affects the heat exchange between the coolant and the absorption liquid.

[0005] A tritium carbon sampling device for preventing crystallization, the tritium carbon sampling device comprising:

[0006] An absorption module, comprising a plurality of absorption bottles connected in sequence to form an absorption passage, wherein the absorption passage comprises a head end and a tail end;

[0007] A cooling module, comprising a cooling coil, each of the absorption bottles is provided with the cooling coil;

[0008] A cleaning module is provided with a cleaning liquid, and the cleaning module is connected with both the head end and the tail end to form a cleaning circuit, and the cleaning circuit is used to provide a circulation circuit for the cleaning liquid to clean the scale on the cooling coil.

[0009] In one embodiment, the cleaning module comprises:

[0010] A cleaning liquid storage tank, comprising a liquid inlet and a liquid outlet, wherein the liquid outlet is connected to the head end, and the liquid inlet is connected to the tail end;

[0011] A first switching valve connected between the liquid outlet and the head end;

[0012] The second switching valve is connected between the liquid inlet and the tail end.

[0013] In one embodiment, the cleaning module further comprises:

[0014] A cleaning pump is connected between the liquid outlet and the cleaning liquid outlet pipe to pump the cleaning liquid into the absorption module.

[0015] In one embodiment, the absorption module includes a first absorption bottle, a second absorption bottle, a third absorption bottle and a fourth absorption bottle which are connected in sequence, and the tritium carbon sampling device for preventing crystallization also includes:

[0016] A catalytic module, wherein the catalytic module is disposed between the second absorption bottle and the third absorption bottle;

[0017] A third switching valve is connected between the catalytic module and the second absorption bottle;

[0018] The fourth switching valve is connected between the catalytic module and the third absorption bottle.

[0019] In one embodiment, the tritium carbon sampling device for preventing crystallization further comprises:

[0020] a fifth switching valve, connected between the second absorption bottle and the third absorption bottle through a pipeline;

[0021] Wherein, when the cleaning module is connected to the absorption module, the third switching valve and the fourth switching valve are closed, and the fifth switching valve is opened.

[0022] In one embodiment, the tritium carbon sampling device for preventing crystallization further comprises:

[0023] A filter module is provided between the sampling gas inlet and the head end of the absorption module;

[0024] a sixth switching valve, disposed between the filter module and the sampling gas inlet;

[0025] a seventh switching valve, disposed between the sampling gas inlet and the filter module through a pipeline, the pipeline being connected to the atmosphere to form an air intake passage;

[0026] Wherein, the sixth switching valve is opened, the seventh switching valve is closed, and the sampling gas inlet is connected to the filtering module;

[0027] The sixth switching valve is closed, the seventh switching valve is opened, and the filter module is the same as the external atmosphere.

[0028] In one embodiment, the filtering module comprises:

[0029] a first filter, connected to the sampling gas inlet;

[0030] a second filter, connected to the first filter;

[0031] The third filter is connected to the second filter, and the third filter is connected to the head end.

[0032] In one embodiment, the filtering module further includes:

[0033] The detection element is arranged between the second filter and the first filter.

[0034] In one embodiment, the tritium carbon sampling device for preventing crystallization further comprises:

[0035] An air pump is arranged at the tail end.

[0036] A nuclear power plant waste gas treatment system comprises the tritium carbon sampling device for preventing crystallization as described above.

[0037] Beneficial effects of the utility model:

[0038] The utility model provides a tritium-carbon sampling device for preventing crystallization, wherein the absorption module is used to absorb and capture tritium and carbon gases. The cooling module is used to cool the absorption liquid in the absorption bottle. By setting a cleaning module and forming a cleaning loop to clean the cooling coil in the absorption bottle, it is possible to prevent crystallization from occurring outside the cooling coil, thereby effectively preventing the crystals from affecting the cooling effect of the cooling coil, and preventing the crystals from clogging the aeration holes, affecting the aeration effect and the absorption of tritium and carbon gases. The tritium-carbon sampling device for preventing crystallization with the above structural form can prevent crystallization from occurring outside the cooling coil, and at the same time can improve the absorption effect of tritium-carbon gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the pipeline connection of a tritium carbon sampling device for preventing crystallization provided in an embodiment of the utility model.

[0040] Reference numerals:

[0041] Absorption module 100; first absorption bottle 110; second absorption bottle 120; third absorption bottle 130; fourth absorption bottle 140; cooling module 200; first refrigeration unit 210; coolant pumping unit 220; coolant storage tank 230; cleaning module 300; cleaning liquid storage tank 310; cleaning liquid pump 320; first switching valve 330; second switching valve 340; cleaning pump 350; catalytic module 400; third switching valve 410; fourth switching valve 420; catalytic oxidation heating unit 430; second refrigeration unit 440; fifth switching valve 500; filtering module 600; first filter 610; second filter 620; third filter 630; detection element 640; sixth switching valve 810; seventh switching valve 820; air pump 830; sampling gas inlet 840; atmosphere 850. DETAILED DESCRIPTION

[0042] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0043] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0044] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0048] See also Figure 1 An embodiment of the utility model provides a tritium carbon sampling device for preventing crystallization. The tritium carbon sampling device includes an absorption module 100, a cooling module 200 and a cleaning module 300. The absorption module 100 includes a plurality of absorption bottles connected in sequence to form an absorption path, and the absorption path includes a head end and a tail end; the cooling module 200 includes a cooling coil, and each absorption bottle is provided with a cooling coil; a cleaning liquid is provided in the cleaning module 300, and the cleaning module 300 is connected with both the head end and the tail end to form a cleaning circuit, and the cleaning circuit is used to provide a circulation circuit for the cleaning liquid to clean the scale on the cooling coil.

[0049] The present technical solution provides a tritium-carbon sampling device for preventing crystallization, wherein the absorption module 100 is used to absorb and capture tritium and carbon gases. The cooling module 200 is used to cool the absorption liquid in the absorption bottle. By providing a cleaning module 300 and forming a cleaning loop to clean the cooling coil in the absorption bottle, crystallization can be prevented from occurring outside the cooling coil, thereby effectively preventing the crystals from affecting the cooling effect of the cooling coil, and preventing the crystals from clogging the aeration holes, affecting the aeration effect and the absorption of tritium and carbon gases. The tritium-carbon sampling device for preventing crystallization with the above structural form can prevent crystallization from occurring outside the cooling coil, while improving the absorption effect of tritium-carbon gas.

[0050] It should be understood that the head end of the absorption passage refers to the end connected to the sampling gas inlet 840, and the tail end of the absorption passage refers to the end connected to the air pump 830. The air to be absorbed flows from the sampling gas inlet 840 into the absorption bottle through the head end of the absorption passage, and is absorbed and captured in the absorption bottle.

[0051] It should be noted that the cooling module 200 in the present invention includes a first refrigeration unit 210, a coolant pumping unit 220 and a coolant storage tank 230. The first refrigeration unit 210 is connected to the cooling coils in each absorption bottle, the coolant pumping unit 220 is connected to the first refrigeration unit 210, and the coolant storage tank 230 is connected to the coolant pumping unit 220. The coolant in the coolant storage tank 230 is pumped to the first refrigeration unit 210 by the coolant pump, and after being cooled by the first refrigeration unit 210, it flows into the cooling coils in different absorption bottles, and after heat exchange in the absorption bottle, it flows into the coolant storage tank 230, and the cycle is repeated to cool the absorption liquid in the absorption module 100.

[0052] In one embodiment, the cleaning module 300 includes a cleaning liquid storage tank 310, a first switching valve 330 and a second switching valve 340, including a liquid inlet and a liquid outlet, the liquid outlet is connected to the head end, and the liquid inlet is connected to the tail end; the first switching valve 330 is connected between the liquid outlet and the head end; the second switching valve 340 is connected between the liquid inlet and the tail end.

[0053] When the absorption module 100 is used for a period of time, it is necessary to clean the cooling coil in the absorption module 100. At this time, the connection between the sampling gas inlet 840 and the absorption module 100 should be disconnected, and the first switching valve 330 and the second switching valve 340 should be opened to connect the cleaning liquid storage tank 310 with the absorption module 100, so that the cleaning liquid in the cleaning liquid storage tank 310 flows into the absorption bottle to clean the cooling coil in the absorption bottle.

[0054] Furthermore, the cleaning module 300 further includes a cleaning pump 350, which is connected between the liquid outlet and the cleaning liquid outlet pipe to pump the cleaning liquid 320 into the absorption module. By providing the cleaning pump 350, the cleaning pump 350 provides power for the cleaning liquid in the cleaning liquid storage tank 310 to flow into the absorption module 100, thereby improving the cleaning efficiency.

[0055] In one embodiment, the absorption module 100 includes a first absorption bottle 110, a second absorption bottle 120, a third absorption bottle 130 and a fourth absorption bottle 140 which are connected in sequence, and the tritium carbon sampling device for preventing crystallization also includes a catalytic module 400, which is arranged between the second absorption bottle 120 and the third absorption bottle 130; the third switching valve 410 is connected between the catalytic module 400 and the second absorption bottle 120; and the fourth switching valve 420 is connected between the catalytic module 400 and the third absorption bottle 130.

[0056] The catalytic module 400 includes a catalytic oxidation heating unit 430 and a second refrigeration unit 440. The catalytic oxidation heating unit 430 is connected to the second absorption bottle 120 and the third absorption bottle 130 through pipelines. The second refrigeration unit 440 is used to cool the gas flowing through the pipelines.

[0057] For the absorption of HT and HTO gases, the HTO gas is first captured by the absorbent in the first and second absorption bottles 120, and the HT in the gas is catalytically oxidized by the catalytic oxidation module to form HTO, which is captured in the third and fourth absorption bottles 140. 14 CO2、H 14 C gas absorption, 14 The CO2 gas is first captured by the alkaline absorption liquid (such as sodium hydroxide solution) in the first absorption bottle 110 and the second absorption bottle 120. 14 The C gas is catalytically oxidized by the catalytic oxidation unit to 14 CO2 is absorbed by the alkaline absorption liquid in the third and fourth absorption bottles 140; the gas absorbed by the tritium carbon sampling device is exhausted.

[0058] In one embodiment, the tritium carbon sampling device for preventing crystallization also includes a fifth switching valve 500, which is connected between the second absorption bottle 120 and the third absorption bottle 130 through a pipeline; wherein, when the cleaning module 300 is connected to the absorption module 100, the third switching valve 410 and the fourth switching valve 420 are closed, and the fifth switching valve 500 is opened.

[0059] It should be understood that the technical solution is to set a pipeline in parallel with the catalytic oxidation unit on the gas path of the second absorption bottle and the third absorption bottle, and set the fifth switching valve 500 on the pipeline, set the third switching valve 410 upstream of the catalytic oxidation unit, and set the fourth switching valve 420 downstream of the catalytic oxidation unit. When cleaning, the third and fourth switching valves 420 are set to a closed state, and the fifth switching valve 500 is in an on state, so that the cleaning liquid can flow through the first absorption bottle 110, the second absorption bottle 120, the third absorption bottle 130 and the fourth absorption bottle 140 in sequence, and the four absorption bottles are cleaned. Under the action of the third and fourth switching valves 420, the cleaning liquid can be prevented from entering the catalytic oxidation unit, thereby avoiding affecting the catalytic performance of the catalyst in the catalytic oxidation unit.

[0060] In one embodiment, the tritium carbon sampling device for preventing crystallization also includes a filter module 600, a sixth switching valve 810 and a seventh switching valve 820, the filter module 600 is arranged between the sampling gas inlet 840 and the head end of the absorption module 100; the sixth switching valve 810 is arranged between the filter module 600 and the sampling gas inlet 840; the seventh switching valve 820 is arranged between the sampling gas inlet 840 and the filter module 600 through a pipeline, and the pipeline is connected to the atmosphere 850 to form an air intake channel; wherein, the sixth switching valve 810 is opened, the seventh switching valve 820 is closed, and the sampling gas inlet 840 is connected to the filter module 600; the sixth switching valve 810 is closed, the seventh switching valve 820 is opened, and the filter module 600 is the same as the external atmosphere 850.

[0061] Through the above structure, by setting a gas channel between the sampling gas inlet 840 and the filter module, and setting the seventh switching valve 820 on the air inlet channel, when it is necessary to replace the absorption bottle, stop supplying the sampling gas, and supply the air in the environment. After a period of supply, under the action of the air, the gas in the pipeline of the tritium carbon sampling device and the absorption bottle is fully absorbed by the absorption liquid, and then when the absorption bottle is replaced, it can prevent the gas containing tritium carbon elements from leaking into the environment, thereby avoiding harm to the human body. Specifically, before replacing the absorption bottle, close the sixth switching valve 810, and open the seventh switching valve 820, that is, stop pumping the sampling gas, and pump the air in the environment. After the set extraction time, turn off the suction pump, so that the radioactive gas can be fully absorbed, and avoid leakage of radioactive gas during the replacement of the absorption bottle.

[0062] In one embodiment, the filter module 600 includes a first filter 610, a second filter 620 and a third filter 630, wherein the first filter 610 is connected to the sampling gas inlet 840; the second filter 620 is connected to the first filter 610; the third filter 630 is connected to the second filter 620, and the third filter 630 is connected to the head end. The filter module 600 also includes a detection element 640, which is disposed between the second filter 620 and the first filter 610. Specifically, the detection element 640 is a flow meter.

[0063] In one embodiment, the tritium carbon sampling device for preventing crystallization further includes an air pump 830, which is disposed at the tail end. By disposing the air pump 830 at the tail end of the absorption module 100, the sampling gas can be pumped by the air pump 830, thereby improving the absorption efficiency of the tritium carbon gas.

[0064] It should be noted that the first switching valve 330, the second switching valve 340, the third switching valve 410, the fourth switching valve 420, the fifth switching valve 500, the sixth switching valve 810 and the seventh switching valve 820 are preferably controlled switching valves, which are arranged so as to facilitate the switching of the state during the cleaning process and after the cleaning. The first switching valve 330 between the third filter 630 and the cleaning pipe interface is a one-way valve, or the pores of the third filter 630 are made less than or equal to 2 microns to prevent the absorption liquid from flowing back into the filter and affecting the normal use of the sampling device.

[0065] In addition, in the present invention, the cleaning liquid in the cleaning module 300 is injected into the cleaning pipeline through the cleaning pump 350 and flows into the absorption bottle. The pH value of the cleaning liquid is an oxalic acid solution with a pH value of 5-6. When cleaning, it is cleaned for 5 minutes or until the surface crystals are removed. After cleaning, distilled water is used to replace the cleaning liquid in the pipeline and the absorption bottle until the pH value is equal to 7.

[0066] A nuclear power plant waste gas treatment system, the nuclear power plant waste gas treatment system includes the above-mentioned tritium carbon sampling device for preventing crystallization. By using the above-mentioned tritium carbon sampling device in the nuclear power plant waste gas treatment system, by setting a cleaning module 300 and forming a cleaning loop to clean the cooling coil in the absorption bottle, it is possible to prevent crystallization from occurring outside the cooling coil, thereby effectively preventing the crystals from affecting the cooling effect of the cooling coil, and also preventing the crystals from clogging the aeration holes, affecting the aeration effect and the absorption of tritium and carbon gas. The tritium carbon sampling device for preventing crystallization in the above-mentioned structural form can prevent crystallization from occurring outside the cooling coil, and at the same time can improve the absorption effect of tritium carbon gas.

[0067] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0068] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A tritium carbon sampling device for preventing crystallization, characterized in that: The tritium carbon sampling device comprises: An absorption module, comprising a plurality of absorption bottles connected in sequence to form an absorption passage, wherein the absorption passage comprises a head end and a tail end; A cooling module, comprising a cooling coil, each of the absorption bottles is provided with the cooling coil; A cleaning module is provided with a cleaning liquid, and the cleaning module is connected with both the head end and the tail end to form a cleaning circuit, and the cleaning circuit is used to provide a circulation circuit for the cleaning liquid to clean the scale on the cooling coil.

2. The tritium carbon sampling device for preventing crystallization according to claim 1, characterized in that: The cleaning module comprises: A cleaning liquid storage tank, comprising a liquid inlet and a liquid outlet, wherein the liquid outlet is connected to the head end, and the liquid inlet is connected to the tail end; A first switching valve connected between the liquid outlet and the head end; The second switching valve is connected between the liquid inlet and the tail end.

3. The tritium carbon sampling device for preventing crystallization according to claim 2, characterized in that: The cleaning module also includes: A cleaning pump is connected between the liquid outlet and the cleaning liquid outlet pipe to pump the cleaning liquid into the absorption module.

4. The tritium carbon sampling device for preventing crystallization according to claim 1, characterized in that: The absorption module includes a first absorption bottle, a second absorption bottle, a third absorption bottle and a fourth absorption bottle which are connected in sequence, and the tritium carbon sampling device for preventing crystallization also includes: A catalytic module, wherein the catalytic module is disposed between the second absorption bottle and the third absorption bottle; A third switching valve is connected between the catalytic module and the second absorption bottle; The fourth switching valve is connected between the catalytic module and the third absorption bottle.

5. The tritium carbon sampling device for preventing crystallization according to claim 4, characterized in that: The tritium carbon sampling device for preventing crystallization also includes: a fifth switching valve, connected between the second absorption bottle and the third absorption bottle through a pipeline; Wherein, when the cleaning module is connected to the absorption module, the third switching valve and the fourth switching valve are closed, and the fifth switching valve is opened.

6. The tritium carbon sampling device for preventing crystallization according to claim 1, characterized in that: The tritium carbon sampling device for preventing crystallization also includes: A filter module is provided between the sampling gas inlet and the head end of the absorption module; a sixth switching valve, disposed between the filter module and the sampling gas inlet; a seventh switching valve, disposed between the sampling gas inlet and the filter module through a pipeline, the pipeline being connected to the atmosphere to form an air intake passage; Wherein, the sixth switching valve is opened, the seventh switching valve is closed, and the sampling gas inlet is connected to the filtering module; The sixth switching valve is closed, the seventh switching valve is opened, and the filter module is the same as the external atmosphere.

7. The crystallization-preventing tritium carbon sampling device according to claim 6, characterized in that: The filtering module comprises: a first filter, connected to the sampling gas inlet; a second filter, connected to the first filter; The third filter is connected to the second filter, and the third filter is connected to the head end.

8. The crystallization-preventing tritium carbon sampling device according to claim 7, characterized in that: The filtering module also includes: The detection element is arranged between the second filter and the first filter.

9. The tritium carbon sampling device for preventing crystallization according to any one of claims 1 to 8, characterized in that: The tritium carbon sampling device for preventing crystallization also includes: An air pump is arranged at the tail end.

10. A nuclear power plant waste gas treatment system, characterized in that: The nuclear power plant waste gas treatment system includes a tritium carbon sampling device for preventing crystallization as described in any one of claims 1-9.

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