Multi-component flue gas purification and dynamic regulation system for open-space combustion laboratory and application thereof

Abstract

The invention relates to a multi-component flue gas purification and dynamic regulation system for an open-space combustion laboratory and application of the multi-component flue gas purification and dynamic regulation system. The system comprises a cyclone spray tower, a plasma purification unit and an adsorption treatment unit, wherein the plasma purification unit is respectively communicated with the cyclone spray tower and the adsorption treatment unit. A large amount of high-temperature flue gas generated by combustion of experimental materials in the open-space combustion laboratory flows from bottom to top after entering the cyclone spray tower through a pipeline, spray liquid is sprayed downwards from the top of the cyclone spray tower for adsorption treatment, and tail gas sequentially enters the plasma purification unit and the adsorption treatment unit after leaving the cyclone spray tower and is discharged after reaching the standard. And liquid drops formed in the spray falling process enter the circulating tank so as to be sprayed again or be used for preparing spray liquid. The system is mainly used for purifying and treating flue gas of an open-space combustion laboratory, has the advantages of being stable in operation, environmentally friendly, efficient and the like, can meet the treatment requirements of different types of high-temperature and toxic flue gas, and has both safety and economical efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of energy conservation, environmental protection and chemical equipment, and in particular to a multi-component flue gas purification and dynamic adjustment system for an open space combustion laboratory and applications thereof. Background Art

[0002] Large open space combustion laboratories are important places for combustion phenomenon research, fire simulation tests, and material combustion performance evaluation. Due to the wide variety of combustibles in combustion experiments, such as heavy oil, wood, cables, lithium battery electrolytes, etc., the high-temperature flue gas produced by combustion is rich in carbon monoxide, incompletely burned soot, acidic gases (HF, HCl, SO2, etc.), polycyclic aromatic hydrocarbons (such as benzene, toluene, xylene), NO X (such as NO, NO2), H2S, NH3, ketone, acetone, resin and other toxic and harmful pollutants. Some pollutants are highly corrosive at high temperatures, so extremely high requirements are placed on the material performance and technical design of flue gas treatment equipment. In addition, with the changes in experimental materials and experimental conditions, the amount of flue gas emitted and the flue gas composition fluctuate greatly in the combustion experiment, which places high requirements on the dynamic adjustment ability of the flue gas treatment system.

[0003] The traditional flue gas treatment method mainly uses adsorbents for adsorption. However, components such as organic compounds in the flue gas cannot be well absorbed by the adsorbent, and there is a greater risk of emission pollution. In addition, in order to reduce costs, the adsorbent that has absorbed the flue gas usually needs to be heated at high temperatures for desorption and regeneration. This process requires high-power refrigeration and heating equipment, which invisibly increases the cost. At present, the flue gas treatment systems of most large combustion laboratories are still based on the traditional adsorbent adsorption principle. Although they can treat the flue gas generated by the combustion experiment to a certain extent, they also have some significant shortcomings and deficiencies, which are mainly reflected in the following aspects:

[0004] ① After the high-temperature flue gas enters the adsorption equipment, the activity of the adsorbent will be quickly consumed. In order to regenerate the adsorbent, it is usually necessary to use complex and expensive refrigeration equipment to cool the flue gas in advance, and it is also necessary to use high-power heating equipment to regenerate the adsorbent that has adsorbed the flue gas, resulting in high energy consumption and operating costs for the entire treatment process, reducing economic efficiency and sustainability;

[0005] ② Various organic compounds and particulate matter in flue gas are difficult to be completely removed by adsorbents, and some toxic and harmful components may even inactivate the adsorbent, resulting in failure of flue gas treatment;

[0006] ③ There may be highly corrosive acidic gases in the flue gas, which makes the existing flue gas treatment equipment unable to operate stably for a long time, increasing the maintenance and replacement costs of the equipment;

[0007] ④The flue gas treatment process involves multiple links (such as flue gas collection, purification, and emission). Existing treatment technologies are relatively lacking in system integration, do not have the ability of dynamic adjustment, and cannot meet the needs of some combustion experiments with large fluctuations in flue gas emissions.

[0008] In summary, existing flue gas treatment devices generally have problems such as high energy consumption, high operating costs, low treatment efficiency, and poor equipment durability, and cannot well meet the flue gas treatment requirements of open-space combustion laboratories. In this context, the research and development of a flue gas treatment device with strong adaptability, high purification efficiency, economy and environmental protection is of great significance for improving the research ability and environmental friendliness of the laboratory. Summary of the Invention

[0009] One of the purposes of the present invention is to solve the above problems existing in the prior art, and provide a multi-component flue gas purification and dynamic adjustment system for an open-space combustion laboratory. This system can dynamically adjust the start-stop states of each module, the air volume of the centrifugal ventilator, the spray liquid circulation volume, and the low-temperature plasma power according to combustion experiments of different scales and different types of combustibles, and also supports the replacement of adsorption materials and spray liquid formulations, so as to meet the flue gas treatment requirements of various combustion experiments as much as possible. To achieve the above purpose, the technical solutions adopted by the present invention are as follows:

[0010] A multi-component flue gas purification and dynamic adjustment system includes a cyclone spray tower 1, a plasma purification unit, and an adsorption treatment unit. The plasma purification unit is respectively connected to the cyclone spray tower 1 and the adsorption treatment unit, and the high-temperature flue gas flows through the cyclone spray tower 1, the plasma purification unit, and the adsorption treatment unit in sequence and is discharged up to standard.

[0011] Further, the cyclone spray tower 1 includes a tower body, in which a demisting plate 7 and a swirl tower plate 8 are arranged. At the top of the tower body, a liquid flow inlet 10 and a flue gas outlet 12 are provided, and at the bottom of the tower body, a liquid flow outlet 13 and a flue gas inlet 11 are provided. The high-temperature flue gas enters the cyclone spray tower 1 from the flue gas inlet 11 and flows upward, and the spray liquid enters the cyclone spray tower 1 from the liquid flow inlet 10 and sprays downward. When the two meet, they fully contact to complete the adsorption treatment to obtain tail gas and liquid droplets. The tail gas flows into the plasma purification unit from the flue gas outlet 12 for subsequent treatment, and the liquid droplets flow out of the cyclone spray tower 1 from the liquid flow outlet 13.

[0012] Further, the cyclone spray tower 1 further includes a pipe-shaped overflow device 9, and the pipe-shaped overflow device 9 is fixed inside the tower body and is located below the swirl tower plate 8.

[0013] Further, the demisting plate 7 is located at the top of the cyclone spray tower 1, and the number of groups is at least 1 group.

[0014] Further, the number of the swirl tower plates 8 and the pipe-shaped overflow devices 9 is the same, and both are 1-5 groups.

[0015] Further, the multi-component flue gas purification and dynamic regulation system further includes a spray liquid circulation device, and the spray liquid circulation device includes a batching tank 15 and a circulation tank 16. The spray liquid is contained in the batching tank 15. A liquid flow outlet 13 at the bottom of the cyclone spray tower 1 and the batching tank 15 are both communicated with the circulation tank 16 through pipelines, and the circulation tank 16 is communicated with a liquid flow inlet 10 at the top of the cyclone spray tower 1 through a pipeline.

[0016] Further, the spray liquid circulation device further includes a sedimentation tank 19, a filter 20, and a buffer tank 21. The circulation tank 16 is communicated with the sedimentation tank 19 and the filter 20 in sequence through pipelines, the sedimentation tank 19 and the filter 20 are communicated with the buffer tank 21 through pipelines respectively, and the buffer tank 21 is communicated with the batching tank 15 through a pipeline.

[0017] Further, the spray liquid is selected from at least one of water, sodium hydroxide aqueous solution, organic alcohol solvents, a complex solution containing Cu 2+ and a complex solution containing Fe 2+ . The type of the spray liquid is adjusted according to the components of the high-temperature flue gas. For example, an alkaline sodium hydroxide aqueous solution can be selected as the spray liquid for acidic flue gas.

[0018] Further, the plasma purification unit includes a filter screen 2, a high-voltage electrolysis module 3, and a low-temperature plasma waste gas purifier 4 arranged in sequence along the gas flow direction.

[0019] Further, the adsorption treatment unit includes an activated carbon adsorption box 5 and a centrifugal ventilator 6 arranged in sequence along the gas flow direction.

[0020] The second object of the present invention is to provide an application of the above multi-component flue gas purification and dynamic regulation system in an open space combustion laboratory.

[0021] Further, the specific process of the above application is as follows: Experimental materials are sent into the open space combustion laboratory for combustion experiments. The generated high-temperature flue gas enters the interior of the cyclone spray tower 1 through a flue gas inlet 11 and flows upward from bottom to top. The spray liquid is sprayed downward from the top of the cyclone spray tower 1 to form a spray, and the spray is mixed and adsorbed with the high-temperature flue gas. The resulting tail gas leaves the cyclone spray tower 1 through a flue gas outlet 12 and enters the plasma purification unit and the adsorption treatment unit in sequence, and finally reaches the standard for discharge; during the falling process of the spray, droplets are formed and enter the circulation tank 16 through a liquid flow outlet 13 for re-spraying, or after separating the water, it is transported to the batching tank 15 to be formulated into a new spray liquid.

[0022] Further, the experimental materials include heavy oil products, wood, cables, lithium battery electrolytes, etc.

[0023] The multi-component flue gas purification and dynamic regulation system provided by the present invention mainly aims at the problems of complex and changeable flue gas components and difficult treatment in large open space combustion laboratories. It adopts a multi-stage treatment method such as a cyclone spray tower + a low-temperature plasma waste gas purifier + an activated carbon adsorption box. Through particulate matter capture, gaseous pollutant decomposition and adsorption and other links, the efficient purification of high-temperature flue gas is finally achieved. Compared with existing similar products or technologies, the advantages of the present invention are mainly reflected in:

[0024] ① The entire system adopts a modular structure design, which not only operates stably, but also can flexibly adapt to the treatment requirements of different pollutants;

[0025] ② According to the characteristics of the experimental materials, the spray liquid can be conveniently and quickly replaced, and the spray liquid is recycled, greatly reducing resource consumption and treatment costs, and meeting the treatment requirements of different high-temperature flue gases;

[0026] ③ The overall design of the system is environmentally friendly and efficient, meeting the increasingly strict emission standards, especially suitable for the complex application scenarios of large combustion laboratories, and combining safety and economy. Description of the Drawings

[0027] Figure 1 It is a schematic diagram of the multi-component flue gas purification and dynamic regulation system described in the present invention.

[0028] Figure 2 It is a schematic structural diagram of the cyclone spray tower.

[0029] Reference numerals: 1-cyclone spray tower, 2-filter screen, 3-high-voltage electrolysis module, 4-low-temperature plasma waste gas purifier, 5-activated carbon adsorption box, 6-centrifugal ventilator, 7-demisting plate, 8-whirl tower plate, 9-tubular overflow device, 10-liquid flow inlet, 11-flue gas inlet, 12-flue gas outlet, 13-liquid flow outlet, 14-pipeline, 15-ingredient tank, 16-circulation tank, 17-transfer pump, 18-circulation pump, 19-sedimentation tank, 20-filter press, 21-buffer tank. Detailed Embodiments

[0030] To enable those of ordinary skill in the art to fully understand the technical solutions and beneficial effects of the present invention, the following further detailed descriptions are made in conjunction with specific embodiments and the accompanying drawings.

[0031] As Figure 1-2 shown, a multi-component flue gas purification and dynamic regulation system for a large open space combustion laboratory mainly includes a cyclone spray tower 1 at the front end, a plasma purification unit in the middle, and an adsorption treatment unit at the tail, which are connected by pipelines. The high-temperature flue gas generated by the combustion experiment flows through the cyclone spray tower 1, the plasma purification unit, and the adsorption treatment unit in sequence from left to right, and finally reaches the standard and is discharged from the exhaust port of the adsorption treatment unit.

[0032] As Figure 2 shown, the cyclone spray tower 1 mainly includes a tower body and a supporting spray liquid circulation device. A flue gas inlet 11 and a flue gas outlet 12 are respectively arranged on the left side of the bottom of the tower body and the top of the tower body. The flue gas inlet 11 is communicated with a flue gas collection device through a pipeline 14, and the flue gas outlet 12 is communicated with a plasma purification unit through a pipeline 14. An entrainment separator plate 7, a cyclone tray 8, and a tubular overflow device 9 are arranged in the tower body from top to bottom. The entrainment separator plate 7 is located at the top of the tower body and close to the flue gas outlet 12, and the number thereof is 4 groups. The cyclone tray 8 and the tubular overflow device 9 are both located below the entrainment separator plate 7, and the tubular overflow device 9 is located directly below the cyclone tray 8. One cyclone tray 8 and one tubular overflow device 9 together form a combination body for converging droplets, and the number of this combination body is also 4 groups.

[0033] The spray liquid circulation device includes a batching tank 15, a circulation tank 16, a delivery pump 17, a circulation pump 18, a sedimentation tank 19, a filter 20, and a buffer tank 21. The positions and the interconnection relationships of these devices are as follows: The circulation tank 16 is installed between the tower body and the batching tank 15 and below both of them. The batching tank 15 is communicated with the circulation tank 16 through a pipeline 14. A liquid flow outlet 13 is arranged on the right side of the bottom of the tower body, and the liquid flow outlet 13 is communicated with the circulation tank 16 through a pipeline 14. A liquid flow inlet 10 is arranged on the left side of the top of the tower body, and the liquid flow inlet 10 is communicated with the circulation tank 16 through a pipeline and a delivery pump 17 installed on the pipeline. A branch pipe is also connected in parallel on this pipeline, and the branch pipe is successively communicated with the sedimentation tank 19 and the filter 20. At the same time, the sedimentation tank 19 and the filter 20 are respectively communicated with the buffer tank 21 through pipelines, and the buffer tank 21 is communicated with the batching tank 15 through another group of pipelines and a circulation pump 18 installed on the pipelines.

[0034] The batching tank 15 is filled with spray liquid and is equipped with a stirring device. The evenly stirred spray liquid automatically flows into the circulation tank 16 under the action of gravity and is stirred evenly again. The delivery pump 17 conveys the spray liquid in the circulation tank 16 into the cyclone spray tower 1 through the liquid flow inlet 10 and sprays it downward from the top of the tower. The formed spray fully contacts the upward flowing high-temperature flue gas, and at the same time plays multiple roles such as adsorption separation and temperature reduction. The treated tail gas continues to flow upward, is demisted by the entrainment separator plate 7, and then enters the plasma purification unit for further treatment. During the falling process of the spray, it contacts the cyclone tray 8 and the tubular overflow device 9 to form droplets. These droplets fall into the bottom of the cyclone spray tower 1, flow into the circulation tank 16 through the liquid flow outlet 13, and are recycled and reused for the spraying operation after recovery. For the spray liquid that cannot be reused after multiple cycles, it is conveyed by the delivery pump 17 to the sedimentation tank 19 and the filter 20 for sedimentation and filtration treatment. The separated water is conveyed to the buffer tank 21 for temporary storage, and then is conveyed to the batching tank 15 by the circulation pump 18 to prepare the spray liquid, so as to realize the recycling of water.

[0035] As Figure 1 shown, the plasma purification unit includes a filter screen 2, a high-voltage electrolysis module 3, and a low-temperature plasma waste gas purifier 4 arranged in sequence from left to right along the air flow direction. These components are encapsulated in a metal shell to form the plasma purification unit. The high-voltage electrolysis module 3 generates plasma, and the main body of the low-temperature plasma waste gas purifier 4 is a low-temperature plasma emitter, which are used in combination. After the high-temperature flue gas is adsorbed and cooled by the cyclone spray tower 1, it first passes through the filter screen 2 to adsorb and remove by-products such as carbon dioxide that are not completely purified in the tail gas, and then passes through the high-voltage electrolysis module 3 and the low-temperature plasma waste gas purifier 4 to further adsorb and degrade gaseous organic pollutants (such as toluene, ethylbenzene, xylene, formaldehyde, acetic acid, etc.), polycyclic aromatic hydrocarbons (such as carcinogens such as pyrene and benzo[a]pyrene) in the tail gas. In this process, the low-temperature plasma is mainly used to remove gases such as hydrogen sulfide, ammonia, benzene, toluene, formaldehyde, acetone, acetone, resin, etc. and for disinfection and sterilization. The specific principle is as follows: The high-energy particles in the plasma collide inelastically with the molecules in the pollutant medium, converting the energy into the internal energy of the ground-state molecules. Through a series of processes such as excitation, dissociation, and ionization, the polluted medium is in an activated state. The polluted medium generates active free radicals under the action of the plasma. After the activated pollutant molecules undergo a directional chain chemical reaction in the plasma, they are removed. When the average energy of the ions exceeds the bond energy of the chemical bonds in the polluted medium, the molecular chain breaks and the polluted medium decomposes, and is adsorbed and collected under the action of the adsorption field of the plasma emitter.

[0036] The tail gas coming out of the plasma purification unit flows into the adsorption treatment unit, which mainly includes an activated carbon adsorption box 5 and a centrifugal ventilator 6. Among them, the number of the activated carbon adsorption boxes 5 is 1-5 groups, arranged in parallel and stacked up and down along the air flow direction, which can adsorb the remaining small-molecule pollutants (such as aldehyde and ketone compounds) in the tail gas and further remove low-concentration gaseous polycyclic aromatic hydrocarbons and volatile sulfides to achieve the purpose of deep purification. The centrifugal ventilator 6 is located at the end of the whole system, and its power can be flexibly adjusted, which is used to provide a matching driving force according to the size of the high-temperature flue gas, so that it can flow in a better direction and be treated qualified.

[0037] The method for applying the flue gas purification and treatment system to a large open space combustion laboratory is as follows: Various experimental materials such as heavy oil products, wood, cables, and lithium battery electrolytes are burned in the large open space combustion laboratory. The generated high-temperature flue gas enters the bottom of the cyclone spray tower 1 through pipeline 14 and the flue gas inlet 11. The upward flowing flue gas and the downward sprayed spray liquid fully contact inside the cyclone spray tower 1. The spray liquid adsorbs the pollutants in the high-temperature flue gas and cools it. During the falling process of the spray, droplets are formed and flow back to the circulation tank 16 for reuse, or after separating the water, it is transported to the batching tank 15 to prepare a new spray liquid; while the tail gas enters the plasma purification unit and the adsorption treatment unit in sequence, and after being treated by the filter screen 2, the high-voltage electrolysis module 3, the low-temperature plasma waste gas purifier 4, and the activated carbon adsorption box 5, it is discharged up to standard externally.

[0038] In this process, different spray liquids can be replaced according to the different experimental materials and their combustion products. For example, when the experimental material is lithium battery electrolyte, since its combustion will generate a large amount of acidic gases (such as HF, HCl, SO2), the spray liquid can be selected as an alkaline liquid such as sodium hydroxide aqueous solution; when the experimental material is heavy oil product, considering that a large amount of particulate matters such as carbon soot and PM2.5 will be generated due to incomplete combustion, the spray liquid can be selected as pure water.

[0039] Application example

[0040] The experimental material is lithium battery electrolyte, and the temperature of the flue gas generated by its combustion is about 850 °C. The main components of the flue gas are: CO2 12.5%, CO 6.8%, H2 4.3%, HF 2.1%, CH4 0.9%, particulate matter (PM) 5.2%. Considering that the high-temperature flue gas is acidic, the selected spray liquid is 5wt% sodium hydroxide aqueous solution.

[0041] In the large open space combustion laboratory, a combustion test of lithium battery electrolyte is carried out. The generated high-temperature flue gas is collected and transported to the bottom of the cyclone spray tower 1. Under the strong negative pressure suction of the centrifugal ventilator 6, the high-temperature flue gas flows from the bottom of the tower to the top of the tower. The spray liquid at 25 °C is sprayed downward from the top of the tower at a spray rate of 0.2 m 3 / h. The temperature of the spray liquid flowing out from the bottom of the tower is 55 °C and flows back to the circulation tank 16 for reuse. When the solid content of the spray liquid recovered in the circulation tank 16 exceeds 8%, it is no longer reused, but is transported to the sedimentation tank 19 and the filter 20 for sedimentation and filtration treatment to separate the water and re-prepare the spray liquid. At the same time, the temperature of the tail gas discharged from the top of the tower is 130 °C, and its components are: CO2 11.8%, CO 3.5%, H2 2.1%, HF 0.4%, CH4 0.5%, particulate matter (PM) 1.2%. This result shows that first, it is correct and reasonable to use the cyclone spray tower to treat the high-temperature flue gas, and the treatment effect is better.

[0042] The flue gas flowing out of the cyclone spray tower enters the plasma purification unit. After filtration and adsorption degradation by low-temperature plasma (working voltage 20 kV, reaction time 1.5 s, temperature in the plasma reaction chamber 80 °C), the components of the flue gas become: CO₂ 11.5%, CO 1.2%, H₂ 0.5%, HF 0.1%, CH₄ 0.2%, particulate matter (PM) 0.5%. After this treatment, the contents of components such as CO, H₂, and particulate matter (PM) in the flue gas are further reduced. The flue gas discharged from the plasma purification unit continues to flow into the adsorption treatment unit for adsorption treatment. The final temperature of the treated flue gas is 50 °C, and the components are: CO₂ 11.3%, CO 0.5%, H₂ 0.2%, HF <0.05%, CH₄ 0.1%, particulate matter (PM) <0.1%, basically meeting the emission requirements.

[0043] By comparison, it can be seen that the temperature of the flue gas before and after treatment is reduced from 850 °C to 50 °C, the HF content in the flue gas is reduced from 2.1% to <0.05%, and the particulate matter (PM) content is reduced from 5.2% to <0.1%. This shows that the effect of this flue gas purification treatment system is very good, and the removal rate of acidic gases and particulate matter is as high as over 98%.

Claims

1. A multi-component flue gas purification and dynamic regulation system, characterized in that: The system includes a cyclone spray tower, a plasma purification unit, and an adsorption treatment unit. The plasma purification unit is connected to the cyclone spray tower and the adsorption treatment unit respectively. The high-temperature flue gas flows through the cyclone spray tower, the plasma purification unit, and the adsorption treatment unit in sequence before meeting the emission standards.

2. The multi-component flue gas purification and dynamic regulation system according to claim 1, characterized in that: The cyclone spray tower comprises a tower body, a demister plate and a cyclone plate are arranged inside the tower body, a liquid flow inlet and a smoke outlet are arranged at the top of the tower body, and a liquid flow outlet and a smoke inlet are arranged at the bottom of the tower body; high-temperature smoke enters the cyclone spray tower from the smoke inlet and flows upward, spray liquid enters the cyclone spray tower from the liquid flow inlet and sprays downward, exhaust gas flows into a plasma purification unit from the smoke outlet, and liquid droplets flow out of the cyclone spray tower from the liquid flow outlet.

3. The multi-component flue gas purification and dynamic regulation system according to claim 2, characterized in that: The cyclone spray tower also includes a tubular overflow device, which is fixed inside the tower body and located below the cyclone trays. The number of the cyclone trays is the same as that of the tubular overflow device.

4. The multi-component flue gas purification and dynamic regulation system according to claim 1, characterized in that: The system also includes a spray liquid circulation device, which includes a batching tank and a circulation tank. The batching tank is filled with spray liquid. The liquid flow outlet at the bottom of the cyclone spray tower and the batching tank are connected to the circulation tank through a pipeline. The circulation tank is connected to the liquid flow inlet at the top of the cyclone spray tower through a pipeline.

5. The multi-component flue gas purification and dynamic regulation system according to claim 4, characterized in that: The spray liquid circulation device also includes a sedimentation tank, a filter, and a buffer tank. The circulation tank is connected to the sedimentation tank and the filter in sequence through pipelines. The sedimentation tank and the filter are connected to the buffer tank through pipelines respectively. The buffer tank is connected to the batching tank through pipelines.

6. The multi-component flue gas purification and dynamic regulation system according to claim 4, characterized in that: The spray liquid is selected from water, sodium hydroxide aqueous solution, organic alcohol solvent, Cu 2+ Complex solution containing Fe 2+ At least one of the complexing solutions.

7. The multi-component flue gas purification and dynamic regulation system according to claim 1, characterized in that: The plasma purification unit comprises a filter screen, a high-voltage electrolysis module, and a low-temperature plasma waste gas purifier arranged in sequence along the airflow direction; the adsorption treatment unit comprises an activated carbon adsorption box and a centrifugal fan arranged in sequence along the airflow direction.

8. Application of the multi-component flue gas purification and dynamic regulation system according to any one of claims 1 to 7 in an open space combustion laboratory.

9. The use according to claim 8, characterized in that The specific application process is as follows: the experimental materials are sent to an open space combustion laboratory for a combustion experiment, the generated high-temperature flue gas enters the cyclone spray tower through the flue gas inlet and flows from bottom to top, the spray liquid is sprayed downward from the top of the cyclone spray tower to form a spray, the spray is mixed with the high-temperature flue gas and adsorbed, and the exhaust gas obtained leaves the cyclone spray tower through the flue gas outlet and enters the plasma purification unit and the adsorption treatment unit in turn, and finally meets the emission standards; droplets are formed during the falling process of the spray and enter the circulation tank from the liquid flow outlet for re-spraying, or the water is separated and transported to the batching tank to be prepared into a spray liquid.

10. The use according to claim 9, characterized in that: The experimental materials include heavy oil, wood, cables, and lithium battery electrolyte.

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