Waste gas treatment system and waste gas treatment method

Abstract

The invention provides a waste gas treatment system and method, and the system comprises a crawling assembly which is movably disposed in a to-be-cleaned container; the cleaning assembly is connected with the crawling assembly; the cleaning assembly is used for emitting laser to the inner wall of the to-be-cleaned container; the air suction head is connected with the crawling assembly so as to suck fluid in the container to be cleaned; one end of the exhaust pipeline is connected with the air suction head, and the other end of the exhaust pipeline is communicated to the outside of the container to be cleaned; and the post-treatment system is connected with the end, away from the gas suction head, of the gas exhaust pipeline, the post-treatment system is used for treating fluid in the gas exhaust pipeline, and the waste gas treatment system solves the technical problem that in the related technology, when laser is used for cleaning a container, the environment is prone to being polluted.

Description

Technical Field

[0001] The present invention relates to the technical field of laser cleaning, and particularly relates to an exhaust gas treatment system and an exhaust gas treatment method. Background Art

[0002] Containers for storing radioactive objects sometimes need to be cleaned. The conventional method is to use chemical liquids for cleaning. After injecting the solution, the container rotates and rolls. When using the liquid cleaning method, there are problems in dealing with a large amount of waste liquid. Therefore, there are devices in the prior art for cleaning containers using lasers.

[0003] However, using lasers to clean radioactive substances will generate poisonous gases. Taking uranium hexafluoride as an example, uranium hexafluoride is a relatively stable compound. However, in a high-intensity α radiation field, it will slowly decompose into uranium pentafluoride and fluorine gas. Uranium hexafluoride has relatively active chemical properties and can undergo a rapid hydrolysis reaction with water in the air to form uranyl fluoride and hydrogen fluoride. The substances generated by the reaction will cause chemical toxicity and radiation hazards to the human body. Among them, the chemical toxicity of hydrogen fluoride has the greatest impact on the human body, followed by the chemical toxicity of uranium, and then the radiation hazard of uranium. If the poisonous gas leaks outside the container, it will cause environmental pollution.

[0004] Therefore, the prior art needs to be further developed. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above technical deficiencies and provide an exhaust gas treatment system and an exhaust gas treatment method to solve the technical problem that the environment is easily polluted when using lasers to clean containers in related technologies.

[0006] To achieve the above technical purpose, the present invention adopts the following technical solutions: An exhaust gas treatment system is provided, including: a crawling component movably arranged inside the container to be cleaned; a cleaning component connected to the crawling component; the cleaning component is used to emit laser light to the inner wall of the container to be cleaned; a suction head connected to the crawling component to absorb the fluid inside the container to be cleaned; an exhaust pipe, one end of the exhaust pipe is connected to the suction head, and the other end of the exhaust pipe communicates to the outside of the container to be cleaned; a post-treatment system connected to the end of the exhaust pipe far from the suction head, and the post-treatment system is used to treat the fluid in the exhaust pipe.

[0007] Further, the cleaning component includes a scanning head connected to the crawling component; a reflecting mirror for reflecting laser light and a laser optical fiber for transmitting laser light are arranged inside the scanning head, and the reflecting mirror is used to reflect the laser light transmitted by the laser optical fiber; a scanning port for laser light to emit is arranged on the scanning head; a fixing port is arranged on the scanning head, and the exhaust gas treatment system includes a charging pipe passing through the fixing port, and an inert gas is filled into the container to be cleaned through the charging pipe.

[0008] Further, the exhaust gas treatment system further includes a flexible pipe, which is connected to the crawling assembly and the scanning head. The laser optical fiber and the exhaust pipe are both arranged inside the flexible pipe. The exhaust gas treatment system further includes a control circuit, which is arranged inside the flexible pipe, and a camera for photographing the inside of the container to be cleaned is arranged on the control circuit.

[0009] Further, the crawling assembly includes: a crawling member, which includes a rotatably arranged crawling wheel; a rotating member, which is rotatably connected to the crawling member. Wherein, the flexible pipe includes a first pipe section connected to the crawling member and a second pipe section connected to the rotating member. A first opening is formed on the first pipe section, and a second opening is arranged on the second pipe section. The exhaust pipe passes through the first opening and penetrates out of the first pipe section, and the laser optical fiber passes through the second opening and penetrates out of the second pipe section.

[0010] Further, the exhaust gas treatment system further includes an inflation pipeline, one end of which is connected to the post-treatment system, and the other end of which is used to be placed inside the container to be cleaned to fill the container to be cleaned with inert gas.

[0011] An exhaust gas treatment method applicable to the above exhaust gas treatment system, the exhaust gas treatment method includes: inserting the crawling assembly and the exhaust pipe into the container to be cleaned, and the cleaning assembly cleans the inner wall of the container to be cleaned; introducing inert gas into the container to be cleaned, discharging the fluid in the container to be cleaned through the exhaust pipe, and guiding the fluid to the post-treatment system; the post-treatment system treats the fluid.

[0012] The exhaust gas treatment method includes: inserting the exhaust pipe into an opening of the container to be cleaned; inserting the inflation pipeline for filling the container to be cleaned with inert gas into another opening of the container to be cleaned.

[0013] The exhaust gas treatment method includes: after the post-treatment system treats the fluid, introducing the cleaned gas obtained after treatment into the container to be cleaned.

[0014] Further, the method for the post-treatment system to process the fluid includes: insulating the exhaust pipe; the exhaust pipe led out from the container to be cleaned enters the fully enclosed container of the post-treatment system; placing the fully enclosed container in a cold trap, arranging a plurality of crystallization plates inside the fully enclosed container, using the cold trap to keep the fully enclosed container at a low temperature, so that the fluid crystallizes and solidifies on the crystallization plates, preliminarily separating the gas to be treated in the fluid from the inert gas, and collecting the gas to be treated; after the fully enclosed container collects a certain amount of the gas to be treated or completes this collection, the whole is peeled off and sealed; when the solidification rate of the fluid reaches a certain value, it enters the gas-solid separator through a sealed pipeline; separating the solid molecules to be treated contained in the inert gas through the gas-solid separator; the separated inert gas passes through a high-efficiency filter, and the inert gas passing through the high-efficiency filter then passes through a lime aqueous solution; drying the inert gas, inspecting, recycling and reusing the inert gas.

[0015] Further, the method for the post-treatment system to process the fluid includes: sealing and connecting the exhaust pipe to the atomization tower, insulating the exhaust pipe, and the steam generating device inside the atomization tower generates superheated steam; the fluid enters the first part of the atomization tower reactor and undergoes a hydrolysis reaction with the superheated steam and releases heat, and the hydrolysis reaction produces a solid intermediate product and the gas to be treated; the solid intermediate product falls on the spiral conveyor below the atomization tower and is sent to the second part of the atomization tower reactor, where it reacts with hydrogen and superheated steam at high temperature to produce the final product; transporting a part of the final product out to the storage container by the spiral conveyor, compacting it and then welding and sealing it for storage by the welding robot; mixing the gaseous final product with the inert gas, and removing dust through the gas-solid separation equipment; the mixed gas after removing dust then passes through the lime aqueous solution, after removing the gaseous final product, drying the gas, then purifying it through high-efficiency filtration, inspecting, recycling and reusing the remaining gas, or discharging it after tail gas emission treatment.

[0016] Beneficial effects: The waste gas treatment system of the present invention solves the technical problem that the environment is easily polluted when using laser to clean the container in the related art. Description of the drawings

[0017] Figure 1 is a schematic diagram of the working state of the waste gas treatment system adopted in the embodiment of the present invention; Figure 2 is a schematic diagram of the internal structure of the scanning head of the waste gas treatment system adopted in the embodiment of the present invention; Figure 3 is a schematic diagram of the structure of the crawling component of the waste gas treatment system adopted in the embodiment of the present invention; Figure 4 is a schematic diagram of the structure of the waste gas treatment system adopted in the embodiment of the present invention.

[0018] Among them, the above-mentioned drawings include the following reference numerals: 10. Container to be cleaned; 1. Crawling assembly; 11. Crawling component; 111. Crawling wheel; 12. Rotating component; 2. Cleaning assembly; 21. Laser optical fiber; 3. Scanning head; 30. Scanning port; 31. Fixed port; 4. Reflector; 41. Suction head; 42. Exhaust pipe; 5. Post-treatment system; 6. Flexible pipe; 7. Control circuit; 8. Inflation pipe. Detailed implementation manners

[0019] In order to enable those skilled in the art to better understand the solution of this application, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0020] According to an embodiment of the present invention, refer to Figures 1 to 4 , a waste gas treatment system is provided, including: a crawling assembly 1, the crawling assembly 1 is movably arranged in a container 10 to be cleaned; a cleaning assembly 2, the cleaning assembly 2 is connected to the crawling assembly 1; the cleaning assembly 2 is used to emit laser to the inner wall of the container 10 to be cleaned; a suction head 41, the suction head 41 is connected to the crawling assembly 1 to absorb the fluid inside the container 10 to be cleaned; an exhaust pipe 42, one end of the exhaust pipe 42 is connected to the suction head 41, and the other end of the exhaust pipe 42 communicates to the outside of the container 10 to be cleaned; a post-treatment system 5, the post-treatment system 5 is connected to the end of the exhaust pipe 42 away from the suction head 41, and the post-treatment system 5 is used to treat the fluid in the exhaust pipe 42. With the above settings, the exhaust pipe 42 is placed into the container 10 to be cleaned along with the crawling assembly 1. After the cleaning assembly 2 cleans the inner wall of the container 10 to be cleaned, the exhaust pipe 42 discharges the waste gas generated by the cleaning. The exhaust pipe 42 can move along with the crawling assembly 1, so as to transfer the waste gas at different positions, making the waste gas treatment in the container 10 to be cleaned more thorough, discharging the waste gas out of the container 10 to be cleaned, and then using the post-treatment system 5 for treatment, achieving the effects of safety and environmental protection, and solving the technical problem that the environment is easily polluted when using laser to clean the container.

[0021] Refer to Figure 1In the exhaust gas treatment system of this embodiment, the cleaning component 2 includes a scanning head 3, which is connected to the crawling component 1; a reflector 4 for reflecting laser light and a laser optical fiber 21 for transmitting laser light are arranged in the scanning head 3, and the reflector 4 is used to reflect the laser light transmitted by the laser optical fiber 21; a scanning port 30 for laser light emission is arranged on the scanning head 3. In this way, the volume of the cleaning component 2 can be reduced by transmitting the laser light through the optical fiber, thereby saving space for the exhaust pipe 42, so that the exhaust pipe 42 and the laser optical fiber 21 enter the container 10 to be cleaned from one container port.

[0022] In the exhaust gas treatment system of this embodiment, see Figure 2 , Figure 3 A fixed port 31 is provided on the scanning head 3 , and the exhaust gas treatment system includes a gas charging pipeline 8 passing through the fixed port 31 , and an inert gas is charged into the container 10 to be cleaned through the gas charging pipeline 8 .

[0023] See also Figure 4 In the exhaust gas treatment system of this embodiment, the exhaust gas treatment system further includes a flexible pipe 6, which is connected to the crawling assembly 1, and the flexible pipe 6 is connected to the scanning head 3, and the laser optical fiber 21 and the exhaust pipeline 42 are both arranged in the flexible pipe 6. In this way, the laser optical fiber 21 and the exhaust pipeline 42 are arranged in the flexible pipe 6, which protects the laser optical fiber 21 and the exhaust pipeline 42 while preventing various pipelines from being entangled.

[0024] In the exhaust gas treatment system of this embodiment, the crawling assembly 1 includes: a crawling part 11, the crawling part 11 includes a rotatable crawling wheel 111; a rotating part 12, the rotating part 12 is relatively rotatably connected to the crawling part 11; wherein the flexible pipe 6 includes a first pipe section connected to the crawling part 11 and a second pipe section connected to the rotating part 12, a first opening is provided on the first pipe section, and a second opening is provided on the second pipe section; the exhaust pipe 42 passes through the first opening to exit the first pipe section, and the laser optical fiber 21 passes through the second opening to exit the second pipe section.

[0025] With the above arrangement, the crawling wheel 111 is used to adsorb on the surface of the container 10 to be cleaned, and the fixed port 31 is placed at the same pipe section of the crawling wheel 111, so that the fixed port 31 is close to the surface of the container 10 to be cleaned, which is more conducive to absorbing the exhaust gas generated on the surface of the container 10 to be cleaned, thereby improving the exhaust gas treatment efficiency.

[0026] See also Figure 1 In the waste gas treatment system of this embodiment, the waste gas treatment system further includes a control circuit 7, which is arranged in the flexible pipe 6, and a camera for photographing the interior of the container 10 to be cleaned is arranged on the control circuit 7. The camera is used to monitor the situation inside the container 10 to be cleaned in real time.

[0027] In the exhaust gas treatment system of this embodiment, refer to Figure 1 , the exhaust gas treatment system further includes a charging pipeline 8. One end of the charging pipeline 8 is connected to the post-treatment system 5, and the other end of the charging pipeline 8 is used to be placed inside the container 10 to be cleaned to fill the container 10 to be cleaned with inert gas.

[0028] The exhaust gas treatment method of this embodiment is applicable to the above-mentioned exhaust gas treatment system. The exhaust gas treatment method includes: inserting the crawling component 1 and the exhaust pipe 42 into the container 10 to be cleaned, and the cleaning component 2 cleans the inner wall of the container 10 to be cleaned; introducing inert gas into the container 10 to be cleaned, discharging the fluid in the container 10 to be cleaned through the exhaust pipe 42, and guiding the fluid to the post-treatment system 5; the post-treatment system 5 treats the fluid.

[0029] In the exhaust gas treatment method of this embodiment, the exhaust pipe 42 is inserted into one opening of the container 10 to be cleaned; the charging pipeline 8 for filling the container 10 to be cleaned with inert gas is inserted into another opening of the container 10 to be cleaned. In this way, by filling the container 10 to be cleaned with inert gas, the inert gas carries out the exhaust gas and dust inside the container, so as to clean the container 10 to be cleaned.

[0030] It should be noted that some containers have two container openings. At this time, the exhaust pipe 42 and the charging pipeline 8 can be inserted into different container openings respectively. In this way, it is beneficial to the layout of the structure. And the two container openings of the container are usually arranged at both ends of the container. In this way, it is also beneficial to the gas circulation in the container, so that the cleaning work is more thorough. When the container has only one container opening, the exhaust pipe 42 and the charging pipeline 8 can be inserted into one container opening.

[0031] Refer to Figure 4 , in the exhaust gas treatment method of this embodiment, the exhaust gas treatment method includes: after the post-treatment system 5 treats the fluid, introducing the obtained clean gas into the container 10 to be cleaned. In this way, the entire exhaust gas treatment system forms a closed loop, and the treated gas is re-introduced into the container 10 to be cleaned, achieving the recycling of the gas, thereby improving the working efficiency.

[0032] In the waste gas treatment method of this embodiment, the method for the post-treatment system 5 to treat the fluid includes: insulating the exhaust pipe 42; the exhaust pipe 42 led out from the container 10 to be cleaned enters the fully enclosed container of the post-treatment system 5; placing the fully enclosed container in a cold trap, arranging a plurality of crystallization plates inside the fully enclosed container, using the cold trap to keep the fully enclosed container at a low temperature, so that the fluid crystallizes and solidifies on the crystallization plates, initially separating the gas to be treated in the fluid from the inert gas, and collecting the gas to be treated; after the fully enclosed container collects a certain amount of the gas to be treated or finishes this collection, the whole is peeled off and sealed; when the solidification rate of the fluid reaches a certain value, it enters the gas-solid separator through a sealed pipeline; separating the solid molecules to be treated contained in the inert gas through the gas-solid separator; the separated inert gas passes through a high-efficiency filter, and the inert gas passing through the high-efficiency filter then passes through a lime water solution; drying the inert gas and checking and recycling the inert gas.

[0033] Embodiment 1: Specifically, taking the treatment of uranium hexafluoride as an example, the waste gas treatment method of this embodiment is as follows: 1) After the UF6 is peeled off from the container by laser, the UF6 is carried out of the container by hot nitrogen.

[0034] 2) The exhaust pipe 42 led out from the container 10 to be cleaned will enter the fully enclosed collection container, the pipeline is insulated throughout, the fully enclosed collection container is placed in a cold trap, there are a plurality of crystallization plates inside the fully enclosed collection container, and the cold trap is used to keep the collection container at a low temperature, so that the UF6 crystallizes and solidifies on the crystallization plates, initially separating the UF6 from the nitrogen, and collecting the UF6. After the fully enclosed collection container collects a certain amount of UF6 or finishes this container collection, the whole is peeled off and sealed.

[0035] 3) When the solidification rate of the UF6 reaches a certain value, it can enter the gas-solid separator through a sealed pipeline. Further separate the UF6 solid molecules contained in the nitrogen through the gas-solid separator, and then further carry out condensation and solidification and separation.

[0036] 4) Further carry out condensation and solidification, and the separated nitrogen passes through a high-efficiency filter.

[0037] 5) The nitrogen passing through the high-efficiency filter then passes through a lime water solution to remove the possible HF, and then the gas is dried, and the nitrogen is checked and recycled.

[0038] 6) Check and recycle the nitrogen.

[0039] In the waste gas treatment method of this embodiment, the method for the post-treatment system 5 to treat the fluid includes: sealingly connecting the exhaust pipe 42 to the atomization tower, insulating the exhaust pipe 42, and generating superheated steam by the steam generating device inside the atomization tower; the fluid enters the first part of the atomization tower reactor, undergoes a hydrolysis reaction with the superheated steam and releases heat, and the hydrolysis reaction produces solid intermediate products and the gas to be treated; the solid intermediate products fall on the screw conveyor below the atomization tower and are sent to the second part of the atomization tower reactor, where they react with hydrogen and superheated steam at high temperature to produce the final products; a part of the final products is transported out to the storage container by the screw conveyor, compacted, and then welded and sealed for storage by the welding robot; the gaseous final products are mixed with inert gas, and the dust is removed through a gas-solid separation device; the mixed gas after removing the dust passes through the lime aqueous solution again, after removing the gaseous final products, the gas is dried, and then purified by high-efficiency filtration, and the remaining gas is inspected, recycled, or discharged after tail gas emission treatment.

[0040] Embodiment 2: Specifically, taking the treatment of uranium hexafluoride as an example, the waste gas treatment method of this embodiment is as follows: 1) After using a laser to strip UF6 from the container, heated nitrogen is introduced into one end of the container 10 to be cleaned, and UF6 is carried out from the other end of the container by the hot nitrogen. The other end of the container is sealingly connected to the atomization tower by a pipe. The whole pipe is insulated, and the steam generating device inside the atomization tower generates superheated steam.

[0041] 2) The UF6 gas enters the first part of the atomization tower reactor and undergoes a hydrolysis reaction with the superheated steam and releases heat. The hydrolysis reaction produces solid intermediate products UO2F2 and HF gas.

[0042] 3) The solid UO2F2 falls on the screw conveyor below the atomization tower and is sent to the second part of the atomization tower reactor, where it reacts with hydrogen and superheated steam at high temperature. In this area, the pyrohydrolysis reaction produces the final products U3O8 and HF acid, and the hydrofluoric acid contains the excess moisture in the reaction (ensuring the complete reaction of UO2F2).

[0043] 4) The produced U3O8 is transported out by the screw conveyor to the storage container, compacted, and then welded and sealed for storage by the welding robot.

[0044] 5) The produced HF vapor and the mixed gas such as nitrogen pass through a gas-solid separation device to remove the dust; 6) The nitrogen and HF mixed gas after removing the dust passes through the lime aqueous solution again, after removing HF, the gas is dried, and then purified by high-efficiency filtration, and the remaining gas is inspected, recycled, or discharged after tail gas emission treatment.

[0045] Due to the active chemical properties of uranium, it is not suitable for long-term storage. Therefore, for its disposal, with the above settings, it is first necessary to convert it into a stable chemical form, and then reuse it, store it for a long time, or dispose of it as low-level radioactive waste, improving the safety of waste gas treatment.

[0046] With the above settings, unstable UF6 is converted into stable uranium oxide and then loaded into a cylindrical container; thereby eliminating the residue treatment equipment and related waste streams.

[0047] Specifically, high-temperature inert gas is used for carrying, placing, pumping and exhausting: nitrogen is input at the inlet, and a metering pump directly pumps at the outlet (the high-temperature inert gas can prevent the condensate from condensing and cleaning inside the container).

[0048] Hydrofluoric acid generated during the treatment process, a by-product of the conversion process, can be sold to the chemical industry. The chemical reagents for tail gas treatment can be regenerated and reused.

[0049] With the above settings, the waste gas is classified and treated according to the products generated by the laser action: it is divided into large particles, fine particles, aerosols, and molecular components.

[0050] For large particles and fine particles, a treatment method of low-temperature condensation and gas-solid separation is adopted.

[0051] For fine particles, aerosols, and molecular components, an efficient separation method by rinsing is adopted, and chemical process extraction and purification are carried out. Classifying and treating the waste gas makes the waste gas treatment more thorough.

[0052] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of this application are used to distinguish similar objects and do not necessarily need to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0053] Optionally, the specific examples in this embodiment can refer to the examples described in the above embodiment, and will not be elaborated here.

[0054] The serial numbers of the above embodiments of this application are only for description and do not represent the advantages and disadvantages of the embodiments.

[0055] In the above-mentioned embodiments of the present application, the descriptions of the various embodiments have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0056] The above are only the preferred embodiments of the present application. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present application, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. An exhaust gas treatment system, characterized in that: include: A crawling assembly (1), wherein the crawling assembly (1) is movably arranged in the container (10) to be cleaned; A cleaning component (2), the cleaning component (2) being connected to the crawling component (1); the cleaning component (2) being used to emit laser light toward the inner wall of the container (10) to be cleaned; An air suction head (41), the air suction head (41) being connected to the crawling assembly (1) so as to absorb fluid inside the container (10) to be cleaned; An exhaust pipeline (42), one end of the exhaust pipeline (42) being connected to the air suction head (41), and the other end of the exhaust pipeline (42) being connected to the outside of the container (10) to be cleaned; A post-processing system (5), the post-processing system (5) being connected to an end of the exhaust pipeline (42) away from the air intake head (41), the post-processing system (5) being used to process fluid in the exhaust pipeline (42).

2. The exhaust gas treatment system according to claim 1, characterized in that: The cleaning component (2) comprises a scanning head (3), and the scanning head (3) is connected to the crawling component (1); a reflector (4) for reflecting laser light and a laser optical fiber (21) for transmitting laser light are arranged in the scanning head (3), and the reflector (4) is used to reflect the laser light transmitted by the laser optical fiber (21); the scanning head (3) is provided with a scanning port (30) for emitting the laser light; The scanning head (3) is provided with a fixed port (31), and the exhaust gas treatment system comprises a gas charging pipeline (8) passing through the fixed port (31), and inert gas is charged into the container to be cleaned (10) through the gas charging pipeline (8).

3. The exhaust gas treatment system according to claim 2, characterized in that: The exhaust gas treatment system further comprises: A flexible pipe (6), the flexible pipe (6) being connected to the crawling assembly (1), the flexible pipe (6) being connected to the scanning head (3), the laser optical fiber (21) and the exhaust pipeline (42) being both arranged in the flexible pipe (6); A control circuit (7), the control circuit (7) being arranged inside the flexible pipe (6), and the control circuit (7) being provided with a camera for photographing the interior of the container (10) to be cleaned.

4. The exhaust gas treatment system according to claim 3, characterized in that: The crawling component (1) comprises: A crawling component (11), the crawling component (11) comprising a rotatably arranged crawling wheel (111); A rotating component (12), the rotating component (12) being connected to the crawling component (11) in a relatively rotatable manner; The flexible pipe (6) comprises a first pipe section connected to the crawling component (11) and a second pipe section connected to the rotating component (12); the first pipe section is provided with a first opening, and the second pipe section is provided with a second opening; the exhaust pipe (42) passes through the first opening and out of the first pipe section, and the laser optical fiber (21) passes through the second opening and out of the second pipe section.

5. The exhaust gas treatment system according to claim 1, characterized in that: The exhaust gas treatment system further comprises an air filling pipeline (8), one end of which is connected to the post-treatment system (5), and the other end of which is inserted into the interior of the container to be cleaned (10) so as to fill the container to be cleaned (10) with inert gas.

6. A method for treating waste gas, applicable to the waste gas treatment system according to any one of claims 1 to 5, characterized in that: The waste gas treatment method comprises: The crawling assembly (1) and the exhaust pipe (42) are inserted into the container to be cleaned (10), and the cleaning assembly (2) cleans the inner wall of the container to be cleaned (10); Introducing an inert gas into the container to be cleaned (10), discharging the fluid in the container to be cleaned (10) through an exhaust pipe (42), and directing the fluid to the post-processing system (5); The post-treatment system (5) processes the fluid.

7. The waste gas treatment method according to claim 6, characterized in that: The waste gas treatment method comprises: The exhaust pipe (42) is inserted into an opening of the container to be cleaned (10); and a gas filling pipe (8) for filling the container to be cleaned (10) with inert gas is inserted into another opening of the container to be cleaned (10).

8. The waste gas treatment method according to claim 6, characterized in that: The waste gas treatment method comprises: after the post-treatment system (5) treats the fluid, the clean gas obtained after the treatment is introduced into the container (10) to be cleaned.

9. The waste gas treatment method according to claim 6, characterized in that: The method for the post-processing system (5) to process the fluid comprises: Insulating the exhaust pipe (42); An exhaust gas pipeline (42) led out from the container to be cleaned (10) enters a fully enclosed container of the post-processing system (5); The fully enclosed container is placed in a cold trap, a plurality of crystallization plates are arranged inside the fully enclosed container, and the fully enclosed container is kept at a low temperature by using the cold trap, so that the fluid is crystallized and solidified on the crystallization plates, the gas to be treated in the fluid is preliminarily separated from the inert gas, and the gas to be treated is collected; after the fully enclosed container collects a certain amount of gas to be treated or completes the collection, the whole container is peeled off and sealed; When the solidification rate of the fluid reaches a certain value, it enters the gas-solid separator through a sealed pipeline; the solid molecules to be treated contained in the inert gas are separated by the gas-solid separator; The separated inert gas passes through a high efficiency filter, and the inert gas passing through the high efficiency filter passes through a lime water solution; The inert gas is dried, inspected, recovered and recycled.

10. The waste gas treatment method according to claim 6, characterized in that: The method for the post-processing system (5) to process the fluid comprises: The exhaust pipe (42) is sealed and connected to the atomizing tower, the exhaust pipe (42) is insulated, and a steam generating device inside the atomizing tower generates superheated steam; The fluid enters the first part of the atomizing tower reactor, undergoes a hydrolysis reaction with the superheated steam and releases heat, and the hydrolysis reaction produces a solid intermediate product and a gas to be treated; The solid intermediate product falls on the screw conveyor below the atomizing tower and is fed into the second part of the atomizing tower reactor, where it reacts with hydrogen and superheated steam at high temperature to produce the final product; A portion of the final product is transported to a storage container by a screw conveyor, compacted, and sealed by a welding robot for storage; The gaseous final product is mixed with an inert gas and passed through a gas-solid separation device to remove dust; After the dust is removed, the mixed gas passes through a lime water solution to remove the gaseous final product, and then the gas is dried and purified through high-efficiency filtration. The remaining gas is inspected, recovered, and recycled, or discharged after exhaust emission treatment.

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