Tail gas treatment system

Abstract

The utility model relates to a tail gas treatment system, and relates to the technical field of tail gas treatment. The tail gas treatment system comprises a collection assembly and a treatment assembly. The collecting assembly comprises a storage tank and a condenser, and the storage tank is communicated with the reaction kettle through materials; the condenser is arranged above the storage tank in the vertical direction, and at least one gas pipeline and at least one liquid pipeline are arranged between the condenser and the storage tank. The treatment assembly comprises an adsorption part and an incineration part, and the adsorption part and the incineration part are both in gas communication with the collection assembly and used for treating tail gas flowing out of the collection assembly. According to the tail gas treatment system, when volatile organic compounds and harmful gas are treated, the volatile organic compounds are condensed through the condenser, the yield of products flowing out of the reaction kettle is increased, the treatment pressure of the tail gas treatment system is reduced, and the tail gas treatment energy consumption is reduced. And after condensation is finished, subsequent residual tail gas is treated through the adsorption part and the incineration part, and the treatment efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of tail gas treatment, and in particular to a tail gas treatment system. Background Art

[0002] In chemical production, the tail gas generated by the reactor usually contains solvents, volatile organic compounds (VOCs) or other harmful gases, and direct discharge will pollute the environment.

[0003] In the related technology, the existing tail gas treatment system usually adopts a fixed design, such as treating the tail gas by incineration, adsorption or other single methods. However, this treatment method can usually only treat the tail gas of a single product. When switching to other products, resulting in changes in the exhaust gas composition, the treatment system is difficult to adapt to the switching needs of producing different products, resulting in low treatment efficiency and high treatment energy consumption when treating the tail gas after the composition changes. Utility Model Content

[0004] In order to at least solve some of the defects mentioned in the related art, the present application provides an exhaust gas treatment system.

[0005] In order to achieve the above-mentioned purpose, the present application provides an exhaust gas treatment system, including a collection component and a treatment component. The collection component includes a storage tank and a condenser, and the storage tank is connected to the reactor material; the condenser is arranged above the storage tank in the vertical direction, and at least one gas pipeline and at least one liquid pipeline are arranged between the condenser and the storage tank; the gas pipeline and the liquid pipeline are both arranged in the vertical direction. The treatment component includes an adsorption component and an incineration component, and the adsorption component is in gas communication with the incineration component; the adsorption component and the incineration component are both in gas communication with the collection component to treat the exhaust gas flowing out of the collection component.

[0006] Furthermore, the adsorption component is in gas communication with the combustion component. The condenser is provided with an exhaust gas discharge port, the exhaust gas discharge port is in gas communication with the adsorption component, and the exhaust gas discharged from the exhaust gas discharge port passes through the adsorption component and the combustion component in sequence.

[0007] Furthermore, the adsorption component includes at least two adsorption tanks, the gas between the adsorption tanks is connected, and a power component is provided at the air inlet of each adsorption tank for pumping the exhaust gas.

[0008] Furthermore, at least one of the adsorption tanks is an activated carbon adsorption tank, and at least one of the adsorption tanks is a paraffin oil adsorption tank.

[0009] Furthermore, the incineration unit includes a regenerative thermal oxidation furnace, and at least two layers of regenerative beds are arranged in the regenerative thermal oxidation furnace.

[0010] Furthermore, a pressurization port is provided on the storage tank.

[0011] Furthermore, a buffer tank is provided between the reactor and the storage tank, a cleaning port is provided on the buffer tank, and the buffer tank is connected with the storage tank through the cleaning port.

[0012] Furthermore, a centrifugal pump is provided on the communication pipeline between the buffer tank and the storage tank, and a one-way valve is provided on the communication pipeline near the storage tank.

[0013] Furthermore, a centrifuge is provided between the reactor and the buffer tank, and a nitrogen protection port is provided on the centrifuge.

[0014] Furthermore, the discharge port of the reactor is arranged at the bottom of the reactor, and the centrifuge is connected with the reactor through the discharge port.

[0015] Through the above technical solution, when the tail gas treatment system of the present application is used, the material flowing out of the reactor will be passed into the storage tank of the collection component. Since the condenser is arranged above the storage tank, the volatile organic matter generated in the storage tank will be passed into the condenser along the gas pipeline, and after being condensed into liquid, it will flow back to the storage tank along the liquid pipeline. Some uncondensed volatile organic matter and harmful gases will flow out from the condenser in the direction of the treatment component, and will be processed in turn through the adsorption component and the incineration component.

[0016] The tail gas treatment system of the present application, when treating the tail gas flowing out of the reactor, will first condense the tail gas through a condenser, re-condense the volatile organic matter in the tail gas into a liquid state and collect it, thereby increasing the yield of the product flowing out of the reactor, and reducing the total amount of the remaining tail gas to reduce the processing pressure of the subsequent processing system, and reducing the energy consumption of the subsequent tail gas treatment. After the condensation is completed, the subsequent remaining tail gas is treated by an adsorption component and an incineration component, thereby improving the processing efficiency. The tail gas treatment system of the present application first performs a condensation treatment, recovers the recoverable tail gas components, and then sequentially performs adsorption, incineration and other treatments on the tail gas that cannot be recovered, which not only ensures the yield, but also can ensure that the tail gas of different components discharged in the production process of different products has a good treatment effect through the combination of multiple treatment methods.

[0017] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a collection component from one perspective provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a processing component from one perspective provided in an embodiment of the present application;

[0021] Figure 3 A schematic structural diagram of an exhaust gas treatment system from one perspective provided in an embodiment of the present application.

[0022] icon:

[0023] 100-collection component; 110-storage tank; 111-boosting port; 120-condenser; 130-gas pipeline; 140-liquid pipeline; 150-buffer tank; 151-centrifugal pump; 152-check valve; 160-centrifuge; 200-processing component; 210-adsorption component; 211-activated carbon adsorption tank; 212-paraffin oil adsorption tank; 220-incineration component; 230-power component; 300-reactor. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] In the description of this application, it should be noted that the terms "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed when in use, which is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0026] In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "disposed" and "connected" 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 direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0027] The present application provides an exhaust gas treatment system to solve the problems of low treatment efficiency and high treatment energy consumption mentioned in the related art.

[0028] See also Figures 1 to 3 , an exhaust gas treatment system, including a collection component 100 and a treatment component 200. The collection component 100 includes a storage tank 110 and a condenser 120, and the storage tank 110 is connected to the reactor 300; the condenser 120 is arranged above the storage tank 110 in the vertical direction, and at least one gas pipeline 130 and at least one liquid pipeline 140 are arranged between the condenser 120 and the storage tank 110; the gas pipeline 130 and the liquid pipeline 140 are both arranged in the vertical direction. The treatment component 200 includes an adsorption component 210 and an incineration component 220, and the adsorption component 210 is connected to the incineration component 220 by gas; the adsorption component 210 and the incineration component 220 are both connected to the collection component 100 by gas, so as to treat the exhaust gas flowing out of the collection component 100.

[0029] Specifically, when the tail gas treatment system of this embodiment is used, the material in the reactor 300 is passed into the storage tank 110 for temporary storage. Since the condenser 120 is arranged above the storage tank 110, the volatile organic matter and harmful gas released from the material temporarily stored in the storage tank 110 will flow into the condenser 120 along the gas pipeline 130 between the condenser 120 and the storage tank 110. Among them, the volatile organic matter is condensed and re-condensed into organic matter after condensation, and falls back into the storage tank 110 along the liquid pipeline 140, and the remaining small part of the volatile organic matter that has not been completely condensed, and the harmful gas flows out from the condenser 120 to the processing assembly 200.

[0030] Some of the volatile organic compounds and harmful gases flowing out of the treatment component 200 will be absorbed by the adsorbent 210, and then the harmful gases will be introduced into the incinerator for incineration to prevent the volatile organic compounds or harmful gases from escaping to the outside.

[0031] The exhaust gas treatment system of this embodiment condenses the exhaust gas through the condenser 120 before treating the exhaust gas. The volatile organic compounds in the exhaust gas are condensed through the condenser 120 so that the volatile organic compounds are re-condensed into liquid and fall back into the storage tank 110.

[0032] Compared with the related art, which directly adopts the treatment method of incineration or adsorption for different tail gases, this embodiment recycles the recoverable part of the tail gas by condensing the tail gas, thereby reducing the total amount of the remaining tail gas, thereby reducing the pressure of the subsequent equipment on the tail gas treatment, thus improving the efficiency of the tail gas treatment, reducing the energy consumption of the tail gas treatment, and improving the yield of the product. In addition, this embodiment combines a variety of treatment methods to treat the tail gas. Even if the product produced in the reactor is switched during the production process, resulting in a change in the composition of the subsequent tail gas, the condensation, adsorption, incineration and other treatment methods of this embodiment can still treat the changed tail gas, which is highly practical.

[0033] In one embodiment, for example, Figure 2 As shown, the adsorbent 210 is in gas communication with the incineration part 220. The condenser 120 is provided with an exhaust gas discharge port, which is in gas communication with the adsorbent 210, and the exhaust gas discharged from the exhaust gas discharge port passes through the adsorbent 210 and the incineration part 220 in sequence. The adsorbent 210 is generally used to adsorb adsorbable pollutants such as volatile organic compounds (VOCs), while the incineration part 220 is used for high-temperature oxidation of harmful gases that are difficult to adsorb or not completely adsorbed. This sequential treatment method can maximize the advantages of each device and improve the overall treatment efficiency.

[0034] In addition, by passing the condensed exhaust gas through the adsorption element 210 and then entering the incineration element 220 for treatment, a multi-stage treatment mechanism is realized. This multi-stage treatment can more thoroughly adsorb volatile organic compounds in the exhaust gas and remove harmful components in the exhaust gas to ensure that the emission meets the standards.

[0035] Furthermore, by pre-adsorbing some volatile organic compounds through the adsorption element 210, the amount of tail gas entering the incineration element 220 and the concentration of harmful substances are reduced, thereby reducing the energy demand during the incineration process, that is, reducing the energy consumption of the tail gas treatment system of this embodiment. This not only saves fuel consumption, but also extends the service life of the incineration equipment. Through the dual treatment of condensation and adsorption, the amount of tail gas entering the incineration element 220 is also significantly reduced, reducing the risk of overload during the incineration process, while reducing energy consumption, it also improves the safety and stability of the system.

[0036] In one embodiment, for example, Figure 2 As shown, the adsorption element 210 includes at least two adsorption tanks, each of which is gas-connected, and a power element 230 is provided at the air inlet of each adsorption tank to pump the exhaust gas. Multiple adsorption tanks are provided, and different fillers can be provided in the multiple adsorption tanks respectively, so that two adsorption tanks work at the same time, and the exhaust gas is adsorbed by different fillers to improve the adsorption effect.

[0037] Of course, by setting up multiple adsorption tanks, alternating adsorption and regeneration operations can be achieved. When one adsorption tank is in the adsorption state, another adsorption tank can be regenerated, such as heating desorption or purging, to ensure that the system can continue to operate without interruption. Multiple adsorption tanks working in turn can extend the service life of a single adsorption tank, reduce the need for frequent replacement of adsorption materials, and thus improve the overall adsorption efficiency.

[0038] The multiple adsorption tanks also provide redundancy protection for the present embodiment. Even if a certain adsorption tank fails or needs maintenance, the other adsorption tanks can still continue to work, thus ensuring the continuity and reliability of the system.

[0039] A power part 230 is provided at the air inlet of each adsorption tank, which can dynamically adjust the exhaust gas flow and pressure according to actual needs, ensure the optimal working conditions of each adsorption tank, and improve the adsorption effect. Each adsorption tank can be independently controlled and monitored, so as to adjust the operating parameters according to different working conditions, such as adsorption time, regeneration frequency, etc., and further optimize the adsorption performance.

[0040] In this embodiment, the specific structure of the power member 230 is not limited, as long as it can meet the air supply requirements of this embodiment. For example, the power member 230 can be configured as a fan, a vacuum pump, etc.

[0041] Please continue reading Figure 2 In one embodiment, illustratively, at least one adsorption tank is an activated carbon adsorption tank 211, and at least one adsorption tank is a paraffin oil adsorption tank 212. Activated carbon is a widely used adsorption material with a large specific surface area and rich microporous structure. It has a strong adsorption capacity for a variety of volatile organic compounds (VOCs), especially for low-concentration, high-molecular-weight organic matter. Paraffin oil, as a liquid adsorbent, is particularly suitable for adsorbing certain specific types of organic matter, such as aromatic hydrocarbon compounds, and many harmful gases are aromatic hydrocarbon compounds. Its liquid properties enable it to fully contact the gas and provide a higher adsorption capacity. In this embodiment, by combining the use of two different adsorption materials, activated carbon and paraffin oil, more effective adsorption treatment can be performed on the exhaust gas, thereby improving the overall adsorption selectivity and removal efficiency of the system.

[0042] Of course, when this embodiment is used in other reaction kettles 300, different fillers can be selected in each adsorption tank according to actual needs to ensure the adsorption effect.

[0043] According to the changes in the exhaust gas composition during the actual production process, the operation modes of the activated carbon adsorption tank 211 and the paraffin oil adsorption tank 212 can be flexibly adjusted, such as switching, parallel connection or series connection, to achieve the best treatment effect. At the same time, the number of each adsorption tank can also be flexibly adjusted. In this embodiment, one activated carbon adsorption tank 211 and three paraffin oil adsorption tanks 212 are provided to meet the adsorption requirements of this embodiment. When used for other reactions, the number of each adsorption tank can be adaptively adjusted.

[0044] In one embodiment, illustratively, the incineration element 220 includes a regenerative thermal oxidizer, in which at least two layers of regenerative beds are provided. The regenerative thermal oxidizer is a highly efficient waste gas treatment equipment, mainly used to treat volatile organic compounds (VOCs), hazardous air pollutants (HAPs) and other combustible waste gases generated in industrial production processes. The regenerative thermal oxidizer converts these pollutants into carbon dioxide and water vapor through a high-temperature oxidation process, thereby achieving the purpose of purifying the waste gas. In this embodiment, the incineration element 220 is set as a regenerative thermal oxidizer to ensure that the incineration treatment of the tail gas is complete.

[0045] The main function of the heat storage bed is to store and release heat. When the exhaust gas passes through the heat storage bed, it is preheated to a temperature close to that required for the oxidation reaction, usually 800°C to 1000°C, and the clean gas after high-temperature oxidation transfers heat to another heat storage bed. In this way, the heat storage thermal oxidizer can achieve a thermal efficiency of more than 95%. In this embodiment, at least two heat storage beds are provided, which can realize the recovery of waste heat from the heat storage beds, further reducing the energy consumption of this embodiment.

[0046] In one embodiment, for example, Figure 1 As shown, the storage tank 110 is provided with a pressurizing port 111. By injecting gas, usually an inert gas such as nitrogen, into the storage tank 110 through the pressurizing port 111, the pressure in the tank can be effectively increased, thereby improving the fluidity of the material. This is particularly important for materials with high viscosity or when long-distance transportation is required, and it is also convenient to send volatile organic compounds and harmful gases in the storage tank 110 to the condenser 120.

[0047] By providing the pressurization port 111, a positive pressure environment in the storage tank 110 can be maintained, which can effectively prevent outside air from entering the tank, avoid volatile organic compounds from escaping into the environment, and reduce safety risks and environmental pollution.

[0048] Furthermore, for materials, when it is necessary to discharge the materials from the storage tank 110, pressurization helps to completely discharge the materials in the tank, reduce the residues at the bottom of the tank, and improve the utilization rate of the materials. For materials that are sensitive to oxygen, maintaining a positive pressure environment can also inhibit oxidation reactions and ensure the quality and stability of the materials.

[0049] For the stability of the system of this embodiment, the inert gas () is introduced through the boost port 111, which can dilute the concentration of combustible gas in the tank and reduce the risk of explosion. Especially when handling flammable and explosive materials, this method can significantly improve the safety of the system. The boost port 111 can also help regulate the pressure in the tank, avoid pressure fluctuations caused by temperature changes or other factors, and ensure stable operation of the system.

[0050] In one embodiment, for example, Figure 1 As shown, a buffer tank 150 is provided between the reactor 300 and the storage tank 110, and a cleaning port is provided on the buffer tank 150, through which the buffer tank 150 is connected to the storage tank 110. The buffer tank 150 can play a buffering role, smooth the flow of materials between the reactor 300 and the storage tank 110, avoid shock and instability caused by pressure fluctuations or flow changes, and ensure the smooth operation of the entire system. The buffer tank 150 can provide an intermediate storage space between the reactor 300 and the storage tank 110 to prevent the storage tank 110 from overflowing due to excessive instantaneous discharge of the reactor 300, or idling due to interruption of discharge of the reactor 300.

[0051] The cleaning port on the buffer tank 150 allows for convenient internal cleaning and inspection. Through the cleaning port, the operator can enter the buffer tank 150 for thorough cleaning to remove sediment, scaling and other impurities to ensure the cleanliness of the tank. The cleaning port can also be used to regularly inspect and maintain the components inside the buffer tank 150, such as the agitator, heating coil or cooling coil, to promptly detect and repair potential problems and extend the service life of the equipment.

[0052] In one embodiment, for example, Figure 1 As shown, a centrifugal pump 151 is provided on the connecting pipe between the buffer tank 150 and the storage tank 110, and a one-way valve 152 is provided on the connecting pipe near the storage tank 110. The centrifugal pump 151 can provide strong power to ensure that the material is smoothly transported from the buffer tank 150 to the storage tank 110, especially for materials with high viscosity or that need to be transported over long distances, the centrifugal pump 151 can significantly improve the transmission efficiency. The centrifugal pump 151 can control the flow rate and flow of the material by adjusting the speed or valve opening to ensure that the material maintains a stable flow state during the transportation process. The centrifugal pump 151 cooperates with the buffer tank 150 to further ensure that the material is evenly and stably supplied to the storage tank 110, thereby ensuring the stability of this embodiment.

[0053] The one-way valve 152 can effectively prevent the material from flowing back from the storage tank 110 to the buffer tank 150. In particular, when the centrifugal pump 151 stops running, the one-way valve 152 can be automatically closed to avoid the backflow phenomenon caused by the pressure difference and ensure the normal operation of the system. Preventing backflow can not only protect the material in the buffer tank 150 from being contaminated, but also avoid equipment damage or failure caused by backflow, thereby extending the service life of the equipment.

[0054] like Figure 1 , illustratively, a centrifuge 160 is further provided between the reactor 300 and the buffer tank 150, and a nitrogen protection port is provided on the centrifuge 160. When the centrifuge 160 processes flammable, explosive or oxygen-sensitive materials, the nitrogen protection port can introduce an inert gas, such as nitrogen, into the centrifuge 160 to reduce the oxygen concentration and the risk of explosion. For materials that are sensitive to oxygen, nitrogen protection can effectively inhibit oxidation reactions, ensure the quality and stability of the materials, and avoid product deterioration caused by oxidation.

[0055] The nitrogen protection port is used to maintain an inert environment in the centrifuge 160, which can ensure the stability of process conditions during the centrifugation process and prevent the entry of outside air to affect the separation effect. Nitrogen protection helps to maintain the pressure balance inside the centrifuge 160, reduce the decrease in separation efficiency caused by pressure fluctuations, thereby improving the separation effect and further ensuring the uniformity of the material introduced into the buffer tank 150.

[0056] In one embodiment, for example, Figure 1 As shown, the discharge port of the reactor 300 is arranged at the bottom of the reactor 300, and the centrifuge 160 is connected to the reactor 300 through the discharge port. The discharge port is arranged at the bottom of the reactor 300, and the material can be discharged more efficiently by gravity. Especially for high-density or viscous materials, gravity-assisted discharge can significantly reduce the energy and time required for pumping. The bottom discharge port also helps to more thoroughly empty the materials in the reactor 300 and reduce the residue at the bottom of the tank, thereby improving material utilization and reducing production costs.

[0057] In many chemical reaction processes, materials may be stratified, such as solid-liquid separation and stratification of liquids of different densities. The bottom discharge port can ensure that the materials discharged from the reactor 300 are evenly mixed, avoiding the problem of uneven concentration caused by the priority discharge of the supernatant. For materials that require subsequent solid-liquid separation, the bottom discharge port can ensure that the solid particles are fully discharged and enter the centrifuge 160 for further processing, thereby improving the separation effect.

[0058] It should be noted that, in the absence of conflict, the features in the embodiments of this application may be combined with each other.

[0059] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tail gas treatment system, characterized in that: include: A collecting assembly (100), the collecting assembly (100) comprising a storage tank (110) and a condenser (120), the storage tank (110) being in material communication with a reaction kettle (300); the condenser (120) being arranged above the storage tank (110) in a vertical direction, and at least one gas pipeline (130) and at least one liquid pipeline (140) being arranged between the condenser (120) and the storage tank (110), the gas pipeline (130) and the liquid pipeline (140) both being arranged in a vertical direction; A processing component (200), the processing component (200) comprising an adsorption component (210) and an incineration component (220), the adsorption component (210) being in gas communication with the incineration component (220); the adsorption component (210) and the incineration component (220) being in gas communication with the collection component (100) for processing exhaust gas flowing out of the collection component (100).

2. The exhaust gas treatment system according to claim 1, characterized in that: The condenser (120) is provided with an exhaust gas discharge port, the exhaust gas discharge port is in gas communication with the adsorption component (210), and the exhaust gas discharged from the exhaust gas discharge port passes through the adsorption component (210) and the incineration component (220) in sequence.

3. The exhaust gas treatment system according to claim 2, characterized in that: The adsorption element (210) comprises at least two adsorption tanks, the gas between the adsorption tanks is connected, and a power element (230) is provided at the air inlet of each adsorption tank for pumping exhaust gas.

4. The exhaust gas treatment system according to claim 3, characterized in that: At least one of the adsorption tanks is an activated carbon adsorption tank (211), and at least one of the adsorption tanks is a paraffin oil adsorption tank (212).

5. The exhaust gas treatment system according to claim 2, characterized in that: The incineration unit (220) comprises a regenerative thermal oxidation furnace, wherein at least two layers of regenerative beds are arranged in the regenerative thermal oxidation furnace.

6. The exhaust gas treatment system according to claim 1, characterized in that: The storage tank (110) is provided with a pressurizing port (111).

7. The exhaust gas treatment system according to claim 1, characterized in that: A buffer tank (150) is provided between the reaction kettle (300) and the storage tank (110), and a cleaning port is provided on the buffer tank (150), and the buffer tank (150) is connected to the storage tank (110) through the cleaning port.

8. The exhaust gas treatment system according to claim 7, characterized in that: A centrifugal pump (151) is provided on the communication pipe between the buffer tank (150) and the storage tank (110), and a one-way valve (152) is provided on the communication pipe at a position close to the storage tank (110).

9. The exhaust gas treatment system according to claim 7, characterized in that: A centrifuge (160) is further provided between the reactor (300) and the buffer tank (150), and a nitrogen protection port is provided on the centrifuge (160).

10. The exhaust gas treatment system according to claim 9, characterized in that: The discharge port of the reactor (300) is arranged at the bottom of the reactor (300), and the centrifuge (160) is connected to the reactor (300) through the discharge port.

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