Waste gas treatment device

Abstract

A waste gas treatment device comprises a spray tower, a corresponding first fan is arranged at a gas inlet of the spray tower, a corresponding carbon suction box is arranged at a gas outlet of the spray tower, a second fan is arranged between the spray tower and the carbon suction box, the spray tower is communicated with a corresponding circulating device, and spray liquid used in the spray tower 1 enters the spray tower again to be sprayed out after being treated by the circulating device. All the components are communicated through corresponding pipelines, and corresponding control valves are arranged on the pipelines. The waste gas treatment method is more diversified, the application range is wider, the service life is longer, the operation cost is lower, and the device is safer and more environment-friendly.

Description

Technical Field

[0001] This utility model belongs to the field of waste gas treatment technology, and in particular relates to a waste gas treatment device. Background Technology

[0002] Waste gas refers to toxic and harmful gases emitted during human production and daily life. It includes chemical waste gas from factories such as chemical plants, steel mills, pharmaceutical plants, coking plants, and oil refineries, as well as domestic waste gas from daily life. Waste gas often contains harmful substances that are detrimental to human health, including but not limited to particulate matter, volatile organic compounds, and gaseous pollutants. It generally has a strong odor, and direct release into the air would severely pollute the environment and affect human health. Therefore, waste gas must be treated before being released to reduce its environmental pollution.

[0003] Currently, activated carbon adsorption or spraying methods are commonly used for waste gas treatment. However, activated carbon adsorption is not suitable for treating particulate matter, as waste gas often contains a large amount of particulate matter, which can quickly clog the activated carbon bed, severely affecting its adsorption effect. Furthermore, some waste gas may have a certain temperature, which, if in direct contact with the activated carbon bed, will damage its microporous structure, thereby permanently reducing its adsorption capacity and significantly shortening the lifespan of the activated carbon bed. As for spraying, in current technology, the liquid after spraying is mostly discharged directly and cannot be recycled, resulting in a huge waste of water resources. At the same time, the wastewater also increases the possibility of pollution of surrounding water resources. Moreover, most spray solutions require the addition of certain chemicals, which greatly increases the operating cost of this method. Utility Model Content

[0004] The purpose of this utility model is to provide an environmentally friendly waste gas treatment device that combines spraying and activated carbon adsorption, in order to solve the technical problems that the general methods of waste gas treatment devices are relatively simple, which not only easily affect their service life, but also have high operating costs, easily lead to resource waste, and easily cause other environmental pollution problems.

[0005] To achieve the above objectives, the specific technical solution of this utility model is as follows:

[0006] A waste gas treatment device includes a spray tower, a first fan at the air inlet of the spray tower, a carbon absorption box at the air outlet of the spray tower, a second fan between the spray tower and the carbon absorption box, and a corresponding circulation device connected to the spray tower. The spray liquid used in the spray tower 1 is treated by the circulation device and then re-enters the spray tower to be sprayed out. All the above components are connected by corresponding pipelines, and corresponding control valves are provided on the pipelines.

[0007] Furthermore, the outlet of the carbon absorption box is equipped with a corresponding air filter, and the outlet end of the air filter is equipped with a corresponding gas detector. The air filter is connected to the spray tower through a corresponding pipeline.

[0008] Furthermore, the spray tower includes a tower body with an air inlet located at the lower end of the tower body sidewall. A partition divides the inner cavity of the tower body into upper and lower chambers. The partition has a vent connecting the upper and lower chambers at the end furthest from the air inlet, and an air outlet located at the upper end of the tower body sidewall on the side furthest from the vent. A pair of corresponding spray components are located at the upper part of the upper and lower chambers, respectively. The inlet ends of the two spray components are connected in parallel to the same pipeline. Both components are connected to corresponding liquid supply pipelines via the parallel pipeline. A first water pump is installed on the parallel pipeline. An outlet is located on the bottom surface of the spray tower, connected to the inlet of a circulation device via a corresponding pipeline. The outlet of the circulation device is connected to the inlet end of the spray components.

[0009] Furthermore, the circulation device includes a sewage tank and a water storage tank. The sewage tank is located below the spray tower, and its inlet is connected to the outlet of the spray tower. The outlet of the sewage tank is connected to the inlet of the water storage tank. A second water pump is installed between the sewage tank and the water storage tank. A corresponding filter screen is installed at the outlet of the sewage tank. A water filter is installed between the second water pump and the water storage tank. The outlet of the water storage tank is connected to the inlet of the spray assembly of the spray tower through a corresponding pipeline.

[0010] Furthermore, the pipeline is divided into an air supply pipeline and a liquid supply pipeline. The liquid supply pipeline includes a first air pipe connected to the air inlet of the spray tower, a second air pipe connecting the air outlet of the spray tower and the carbon absorption box, a third air pipe connecting the carbon absorption box and the air filter, and a fourth air pipe at the outlet of the air filter. The inlet of the first air pipe is connected to a corresponding waste gas supply device. A first fan is installed on the first air pipe, a second fan is installed on the second air pipe between the spray tower and the carbon absorption box, a gas detector is installed on the fourth air pipe, and the outlet of the fourth air pipe is connected to a fifth air pipe that is connected to the first air pipe. The inlet of the fifth air pipe is... Between the gas detector connected in parallel and its outlet, the outlet of the fifth gas pipe is connected in parallel to the inlet of the first gas pipe. The liquid supply pipeline includes the first liquid pipe at the inlet of the spray assembly, the second liquid pipe connecting the outlet of the spray tower to the inlet of the sewage tank, the third liquid pipe connecting the sewage tank and the water storage tank, and the fourth liquid pipe connecting the water storage tank and the spray assembly. The inlets of the corresponding two sets of spray assemblies in the spray tower are connected in parallel to the outlet of the first liquid pipe. The first water pump is installed on the first liquid pipe, the second water pump and the water filter are connected in series on the third liquid pipe, and the outlet of the fourth liquid pipe is connected in parallel to the inlet of the first liquid pipe.

[0011] Furthermore, a gas flow meter is installed on the first gas pipe between the first fan and the spray tower, and corresponding pressure gauges are installed on the second, third and fourth gas pipes. The pressure gauge on the second gas pipe is located at the inlet of the carbon absorption box at its outlet end, and the pressure gauge on the fourth gas pipe is located at the outlet of the air filter at its inlet end.

[0012] Furthermore, a water quality detector is installed at the outlet of the water storage tank, and a fifth liquid pipe is installed between the third liquid pipe and the fourth liquid pipe. Its inlet end is connected between the water quality detector and the third liquid pipe, and its outlet end is connected to the fourth liquid pipe at the inlet of the second water pump.

[0013] Furthermore, the control valve is divided into an air control valve and a liquid control valve. The air control valve includes a first air valve at the inlet end of the first air pipe, a second air valve at the outlet end of the first air pipe, a third air valve at the inlet end of the second air pipe, a fourth air valve at the outlet end of the fourth air pipe, and a fifth air valve on the fifth air pipe. The inlet end of the fifth air pipe is connected to the fourth air pipe between the gas detector and the fourth air valve. A first blower is located between the first and second air valves. The outlet end of the fifth air pipe is connected between the first air valve and the first blower. All three air valves (first, fourth, and fifth) are connected to the gas detector. Relatedly, the liquid control valve includes a first liquid valve located at the inlet end of a first liquid pipe, a second liquid valve located on a second liquid pipe, a third liquid valve located at the inlet end of a third liquid pipe, a fourth liquid valve located at the outlet end of a fourth liquid pipe, and a fifth liquid valve located on a fifth liquid pipe. The outlet of the fourth liquid pipe is connected to the first liquid pipe between the first liquid valve and the first water pump. The inlet end of the fifth liquid pipe is connected to the fourth liquid pipe between the water quality analyzer and the fourth liquid valve, and its outlet end is connected to the third liquid pipe between the third liquid valve and the second water pump. The third liquid valve is a backflow preventer. The first liquid valve, the fourth liquid valve, and the fifth liquid valve are associated with the water quality analyzer.

[0014] The waste gas treatment device of this utility model has a more diversified waste gas treatment method, is applicable to more types of waste gas, has a wider range of applications, a longer service life, and produces cleaner waste gas. It improves the utilization rate of spray liquid, reduces the waste rate of resources, reduces the probability of pollution to other surrounding resources, greatly reduces the operating cost of waste gas treatment, and is safer and more environmentally friendly. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] The markings in the diagram are as follows: 1. Spray tower; 11. Air inlet; 12. Air outlet; 13. Tower body; 14. Baffle plate; 15. Ventilation hole; 16. Spray assembly; 17. Liquid outlet; 18. Gas flow meter; 2. Carbon absorption box; 21. Air filter; 22. Gas detector; 3. First fan; 31. Second fan; 32. First water pump; 33. Second water pump; 4. Circulation device; 41. Wastewater tank; 42. Water storage tank; 43. Water filter; 44. Water quality analyzer; 5. First gas pipe; 51. Second gas pipe; 52. Third gas pipe; 53. Fourth gas pipe; 54. Fifth gas pipe; 6. First liquid pipe; 61. Second liquid pipe; 62. Third liquid pipe; 63. Fourth liquid pipe; 64. Fifth liquid pipe; 7. Pressure gauge. Detailed Implementation

[0017] To better understand the purpose, structure, and function of this utility model, the following description, in conjunction with the accompanying drawings, provides a more detailed account of a waste gas treatment device according to this utility model.

[0018] like Figure 1 As shown, the waste gas treatment device of this utility model includes a first fan 3, a spray tower 1, a second fan 31, and a carbon adsorption box 2. The first fan 3 is located at the air inlet 11 of the spray tower 1. The waste gas to be treated enters the spray tower 1 under the action of the first fan 3. The carbon adsorption box 2 is located at the air outlet 12 of the spray tower 1. The second fan 31 is located between the two. The gas after spray treatment enters the carbon adsorption box 2 for adsorption treatment under the action of the second fan 31. In this way, the particles and other impurities in the waste gas are purified by the two treatments of the spray tower 1 and the carbon adsorption box 2 and then discharged into the air. The spray tower 1 is connected to a corresponding circulation device 4. The spray liquid used in the spray tower 1 is treated by the circulation device 4 and then re-enters the spray tower 1 to be sprayed out, so that the spray liquid is recycled, which is more environmentally friendly. The above components are connected by corresponding pipelines, and corresponding control valves are installed on the pipelines to better control the flow of gas or liquid in the pipelines.

[0019] The spray tower 1 includes a tower body 13, with an air inlet 11 located at the lower end of the side wall of the tower body 13. A first fan 3 is connected to the air inlet 11 of the tower body 13 via a corresponding pipe. A partition 14 is provided inside the tower body 13, dividing the inner cavity into upper and lower chambers. A vent 15 is provided at the end of the partition 14 furthest from the air inlet 11, connecting the upper and lower chambers. An air outlet 12 is located on the upper end of the side wall of the tower body 13 furthest from the vent 15, and is connected to a second fan 31 via a corresponding pipe. Spraying components 16 are provided inside the tower body 13, with a pair of corresponding spraying components 16 located in the upper and lower chambers respectively. Each spraying component 16 is situated at the upper part of its corresponding chamber. The inlet end of the spray tower 1 is connected to a corresponding liquid supply pipeline, which provides spray liquid. In this embodiment, the inlet ends of the two spray components 16 are connected in parallel to the same pipeline. The two components are connected to the corresponding liquid supply pipeline through the corresponding pipeline. A first water pump 32 is installed on the parallel pipeline. The spray liquid in the liquid supply pipeline enters the spray pipeline under the action of the first water pump 32. The bottom surface of the spray tower 1 is a funnel shape that gradually slopes inward from top to bottom. A corresponding liquid outlet 17 is provided at its bottom end. The liquid outlet 17 is connected to the inlet of the circulation device 4 through a corresponding pipeline. The outlet of the circulation device 4 is connected to the inlet end of the spray component 16. The spray liquid used in the spray tower 1 is input into the circulation device 4 through the liquid outlet 17 and the corresponding pipeline. After being processed by the circulation device 4, it is re-supplied into the spray component 16 and sprayed again.

[0020] Furthermore, an air filter 21 is installed at the outlet of the carbon adsorption box 2, and a gas detector 22 is installed at the outlet of the air filter 21. After the gas in the carbon adsorption box 2 has undergone adsorption treatment, it is filtered again by the air filter 21. The gas detector 22 detects the gas output from the air filter 21. The air filter 21 is connected to the spray tower 1 through a corresponding pipeline. Only the gas that passes the test of the gas detector 22 can be discharged into the air to prevent the carbon particle content in the gas from being too high, which would cause air pollution. The gas that fails the test is re-entered into the spray tower 1 for secondary filtration to ensure the cleanliness of the gas discharged from the entire treatment device.

[0021] The circulation device 4 includes a wastewater tank 41 and a water storage tank 42. The wastewater tank 41 is located below the spray tower 1, and its inlet is connected to the outlet 17 of the spray tower 1. The outlet of the wastewater tank 41 is connected to the inlet of the water storage tank 42. A second water pump 33 is installed between the wastewater tank 41 and the water storage tank 42. The spray liquid used in the spray tower 1 first enters the wastewater tank 41. After settling in the wastewater tank 41 for a period of time, most of the particulate impurities in the liquid settle to the bottom of the wastewater tank 41. The settled liquid is pumped out of the wastewater tank 41 by the action of the second water pump 33. A corresponding filter screen is installed at the outlet of the wastewater tank 41 to filter the outflowing wastewater once. A water filter 43 is installed between the second water pump 33 and the water storage tank 42. The liquid flowing out of the wastewater tank 41 enters the water storage tank 42 for storage after secondary filtration by the water filter 43. The outlet of the water storage tank 42 is connected to the inlet of the spray assembly 16 of the spray tower 1 through a corresponding pipeline and is then sprayed out again.

[0022] The pipeline is divided into a gas supply pipeline and a liquid supply pipeline. The liquid supply pipeline provides a passage for the gas to be transported between the components, and the liquid supply pipeline provides a passage for the liquid to flow between the components of the circulation device. The gas supply pipeline includes a first gas pipe 5 connected to the air inlet 11 of the spray tower 1, a second gas pipe 51 connecting the air outlet 12 of the spray tower 1 and the carbon absorption box 2, a third gas pipe 52 connecting the carbon absorption box 2 and the air filter 21, and a fourth gas pipe 53 at the outlet of the air filter 21. The inlet of the first gas pipe 5 is connected to a corresponding waste gas supply device. A first fan 3 is installed on the first gas pipe 5, a second fan 31 is installed on the second gas pipe 51 between the spray tower 1 and the carbon absorption box 2, a gas detector 22 is installed on the fourth gas pipe 53, and the outlet of the fourth gas pipe 53 is connected to the first gas pipe 5. The fifth gas pipe 54 has its inlet end connected in parallel between the gas detector 22 and its outlet end. The outlet end of the fifth gas pipe 54 is connected in parallel at the inlet of the first gas pipe 5. The liquid supply pipeline includes the first liquid pipe 6 at the inlet end of the spray assembly 16, the second liquid pipe 61 connecting the outlet 17 of the spray tower 1 to the inlet of the sewage tank 41, the third liquid pipe 62 connecting the sewage tank 41 and the water storage tank 42, and the fourth liquid pipe 63 connecting the water storage tank 42 and the spray assembly 16. The inlet ends of the corresponding two sets of spray assemblies 16 in the spray tower 1 are connected in parallel at the outlet of the first liquid pipe 6. The first water pump 32 is installed on the first liquid pipe 6. The second water pump 33 and the water filter 43 are connected in series on the third liquid pipe 62. The outlet of the fourth liquid pipe 63 is connected in parallel at the inlet of the first liquid pipe 6.

[0023] Furthermore, a gas flow meter 18 is installed on the first air pipe 5 between the first fan 3 and the spray tower 1 to monitor the flow rate of the exhaust gas entering the spray tower 1 in real time, facilitating the introduction of exhaust gas into the spray tower 1. Corresponding pressure gauges 7 are installed on the second air pipe 51, the third air pipe 52 and the fourth air pipe 53. The pressure gauge 7 on the second air pipe 51 is located at the inlet of the carbon absorption box 2 at its outlet end, and the pressure gauge 7 on the fourth air pipe 53 is located at the outlet of the air filter 21 at its inlet end. The pressure gauges 7 monitor the pressure difference between the carbon absorption box 2 and the air filter 21 in real time, so that the staff can better control them.

[0024] Furthermore, a water quality detector 44 is installed at the outlet of the water storage tank 42 to detect the quality of the spray liquid output from the water storage tank 42. A fifth liquid pipe 64 is installed between the third liquid pipe 62 and the fourth liquid pipe 63. The inlet of the fifth liquid pipe 64 is connected between the water quality detector 44 and the third liquid pipe 62, and its outlet is connected to the fourth liquid pipe 63 at the inlet of the second water pump 33. When the quality of the spray liquid output from the water storage tank is unqualified, the second water pump 33 re-inputs the spray liquid in the water storage tank 42 into the water filter 43 through the fifth liquid pipe 64 for re-filtration. The pump stops when the qualified standard is met, ensuring that the quality of the spray liquid in the water storage tank 42 always meets the spraying requirements.

[0025] Each pipeline is equipped with a corresponding control valve, including multiple air control valves for controlling the flow of exhaust gas and multiple liquid control valves for controlling the circulation of spray liquid. The air control valves include a first air valve at the inlet of the first air pipe 5, a second air valve at the outlet of the first air pipe 5, a third air valve at the inlet of the second air pipe 51, a fourth air valve at the outlet of the fourth air pipe 53, and a fifth air valve on the fifth air pipe 54. The inlet of the fifth air pipe 54 is connected to the fourth air pipe 53 between the gas detector 22 and the fourth air valve. The first fan 3 is located between the first and second air valves. The outlet of the fifth air pipe 54... The air filter 21 is connected between the first air valve and the first fan 3, and the first, fourth, and fifth air valves are all associated with the gas detector 22. If the gas discharged from the air filter 21 meets the standard, it controls the first and fourth air valves to open and the fifth air valve to close. The gas discharged from the air filter 21 is discharged from the treatment device through the fourth air pipe 53. The exhaust gas from the external exhaust gas supply device enters the spray tower 1 through the first air pipe 5 under the action of the first fan 3 and is then treated. If the gas discharged from the air filter 21 does not meet the standard, it controls the first and fourth air valves to close and the fifth air valve to open. The gas discharged from the air filter 21 is discharged from the treatment device through the fourth air pipe 53 under the action of the first fan 3. The liquid enters the spray tower 1 through the first air pipe 5 for further treatment. The liquid control valves include a first liquid valve at the inlet end of the first liquid pipe 6, a second liquid valve on the second liquid pipe 61, a third liquid valve at the inlet end of the third liquid pipe 62, a fourth liquid valve at the outlet end of the fourth liquid pipe 63, and a fifth liquid valve on the fifth liquid pipe 64. The outlet of the fourth liquid pipe 63 is connected to the first liquid pipe 6 between the first liquid valve and the first water pump 32. The inlet end of the fifth liquid pipe 64 is connected to the fourth liquid pipe 63 between the water quality analyzer 44 and the fourth liquid valve, and its outlet end is connected to the third liquid pipe 62 between the third liquid valve and the second water pump 33. The third liquid valve is a backflow preventer. The first, fourth, and fifth liquid valves are associated with the water quality analyzer 44. If the spray liquid output from the water storage tank 42 meets the requirements, the water quality analyzer 44 controls the first and fifth liquid valves to close and the fourth liquid valve to open. The spray liquid output from the water storage tank 42 enters the spray tower 1 for spraying under the action of the first water pump 32. If the spray liquid output from the water storage tank 42 does not meet the requirements, the water quality analyzer 44 controls the first and fifth liquid valves to open and the fourth liquid valve to open and close. The spray liquid output from the water storage tank 42 re-enters the water filter 43 for filtration under the action of the second water pump 33 until it meets the requirements.

[0026] When not in use, all valves in the pipelines are closed. When in use, each valve is opened or closed as needed. First, the exhaust gas from the external exhaust gas supply device passes through the first air pipe 5 under the action of the first fan 3. The spray tower 1 works synchronously, and its spray component 16 sprays the incoming exhaust gas. The gas that has been sprayed once in the lower tower chamber enters the upper tower chamber for a second spray through the air vent 15. Then, the gas that has had most of the impurities removed by the two sprays enters the carbon adsorption chamber under the action of the second fan 31. After the carbon adsorption chamber adsorbs the remaining harmful substances inside, the gas enters the air filter 21 for a third filtration. Finally, the gas that passes the gas test can be discharged from the treatment device. While the above components are purifying the exhaust gas, the spray liquid in the spray tower 1 accumulates to a certain amount, and the second liquid valve opens. The used spray liquid enters the circulation device 4 for synchronous treatment. The spray liquid that passes the circulation treatment will re-enter the spray tower 1 for spraying under the action of the first water pump 32. This cycle repeats continuously.

[0027] This utility model of waste gas treatment device, through the cooperation of spray tower 1 and carbon adsorption chamber, purifies various harmful impurities in waste gas. Its purification method is more diversified, applicable to more types of waste gas, expanding its application scope, and its service life is longer. The setting of the fifth gas pipe 54 realizes the circulation of gas treatment, making the emitted waste gas cleaner. The setting of the circulation device 4 improves the utilization rate of spray liquid, reduces its waste rate, reduces the probability of pollution to other surrounding resources, greatly reduces the operating cost of waste gas treatment, and is safer and more environmentally friendly.

[0028] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. A waste gas treatment device, characterized in that, It includes a spray tower (1), a first fan (3) is provided at the air inlet (11) of the spray tower (1), a carbon absorption box (2) is provided at the air outlet (12) of the spray tower (1), a second fan (31) is provided between the spray tower (1) and the carbon absorption box (2), and a corresponding circulation device (4) is connected to the spray tower (1). The spray liquid used in the spray tower (1) is treated by the circulation device (4) and then re-enters the spray tower (1) and is sprayed out. The spray tower (1), the carbon absorption box (2), the first fan (3) and the circulation device (4) are connected by corresponding pipelines, and corresponding control valves are provided on the pipelines. The spray tower (1) includes a tower body (13), with an air inlet (11) located at the lower end of the side wall of the tower body (13). A partition (14) divides the inner cavity of the tower body (13) into upper and lower chambers. The two chambers are the upper chamber and the lower chamber, respectively. A vent (15) is provided at one end of the partition (14) furthest from the air inlet (11), connecting the upper and lower chambers. The air outlet (12) of the spray tower (1) is located on the side wall of the tower body (13) furthest from the vent (15). At the top, a pair of corresponding spray components (16) are respectively located at the top of the upper tower chamber and the lower tower chamber. The inlet ends of the two spray components (16) are connected in parallel on the same pipeline. The two are connected to the corresponding liquid supply pipeline through the parallel pipeline. A first water pump (32) is installed on the parallel pipeline. An outlet (17) is provided on the bottom surface of the spray tower (1). The outlet (17) is connected to the inlet of the circulation device (4) through the corresponding pipeline. The outlet of the circulation device (4) is connected to the inlet end of the spray component (16). The circulation device (4) includes a sewage tank (41) and a water storage tank (42). The sewage tank (41) is located below the spray tower (1), and its inlet is connected to the outlet (17) of the spray tower (1). The outlet of the sewage tank (41) is connected to the inlet of the water storage tank (42). A second water pump (33) is provided between the sewage tank (41) and the water storage tank (42). A corresponding filter screen is provided at the outlet of the sewage tank (41). A water filter (43) is provided between the second water pump (33) and the water storage tank (42). The outlet of the water storage tank (42) is connected to the inlet of the spray assembly (16) of the spray tower (1) through a corresponding pipeline.

2. The waste gas treatment device according to claim 1, characterized in that, The outlet of the carbon absorption box (2) is equipped with a corresponding air filter (21), and the outlet end of the air filter (21) is equipped with a corresponding gas detector (22). The air filter (21) is connected to the spray tower (1) through a corresponding pipeline.

3. The waste gas treatment device according to claim 1, characterized in that, The pipeline is divided into a gas supply pipeline and a liquid supply pipeline. The liquid supply pipeline includes a first gas pipe (5) connected to the air inlet (11) of the spray tower (1), a second gas pipe (51) connecting the air outlet (12) of the spray tower (1) and the carbon absorption box (2), a third gas pipe (52) connecting the carbon absorption box (2) and the air filter (21), and a fourth gas pipe (53) at the outlet of the air filter (21). The inlet of the first gas pipe (5) is connected to a corresponding waste gas supply device. A first fan (3) is installed on the first gas pipe (5). A second fan (31) is installed on the second gas pipe (51) between the spray tower (1) and the carbon absorption box (2). A gas detector (22) is installed on the fourth gas pipe (53). The outlet of the fourth gas pipe (53) is connected to a fifth gas pipe (54) connected to the first gas pipe (5). The inlet of the fifth gas pipe (54) is connected in parallel to the upper gas pipe (51). Between the gas detector (22) and its outlet, the outlet of the fifth gas pipe (54) is connected in parallel to the inlet of the first gas pipe (5). The liquid supply pipeline includes the first liquid pipe (6) at the inlet of the spray assembly (16), the second liquid pipe (61) connecting the outlet (17) of the spray tower (1) to the inlet of the sewage tank (41), the third liquid pipe (62) connecting the sewage tank (41) and the water storage tank (42), and the fourth liquid pipe (63) connecting the water storage tank (42) and the spray assembly (16). The inlet ends of the corresponding two sets of spray assemblies (16) in the spray tower (1) are connected in parallel to the outlet of the first liquid pipe (6). The first water pump (32) is installed on the first liquid pipe (6), the second water pump (33) and the water filter (43) are connected in series on the third liquid pipe (62), and the outlet of the fourth liquid pipe (63) is connected in parallel to the inlet of the first liquid pipe (6).

4. The waste gas treatment device according to claim 3, characterized in that, A gas flow meter (18) is installed on the first gas pipe (5) between the first fan (3) and the spray tower (1). A corresponding pressure gauge (7) is installed on the second gas pipe (51), the third gas pipe (52) and the fourth gas pipe (53). The pressure gauge (7) on the second gas pipe (51) is located at the inlet of the carbon absorption box (2) at its outlet end, and the pressure gauge (7) on the fourth gas pipe (53) is located at the outlet of the air filter (21) at its inlet end.

5. The waste gas treatment device according to claim 3, characterized in that, The water storage tank (42) is equipped with a water quality detector (44) at its outlet end. A fifth liquid pipe (64) is provided between the third liquid pipe (62) and the fourth liquid pipe (63). Its inlet end is connected between the water quality detector (44) and the third liquid pipe (62), and its outlet end is connected to the fourth liquid pipe (63) at the inlet of the second water pump (33).

6. The waste gas treatment device according to claim 5, characterized in that, The control valves are divided into air control valves and liquid control valves. The air control valves include a first air valve at the inlet of the first air pipe (5), a second air valve at the outlet of the first air pipe (5), a third air valve at the inlet of the second air pipe (51), a fourth air valve at the outlet of the fourth air pipe (53), and a fifth air valve on the fifth air pipe (54). The inlet of the fifth air pipe (54) is connected to the fourth air pipe (53) between the gas detector (22) and the fourth air valve. The first fan (3) is located between the first air valve and the second air valve. The outlet of the fifth air pipe (54) is connected between the first air valve and the first fan (3). The first air valve, the fourth air valve, and the fifth air valve are all associated with the gas detector (22). The liquid control valves are... The control valve includes a first liquid valve located at the inlet end of the first liquid pipe (6), a second liquid valve located on the second liquid pipe (61), a third liquid valve located at the inlet end of the third liquid pipe (62), a fourth liquid valve located at the outlet end of the fourth liquid pipe (63), and a fifth liquid valve located on the fifth liquid pipe (64). The outlet of the fourth liquid pipe (63) is connected to the first liquid pipe (6) between the first liquid valve and the first water pump (32). The inlet end of the fifth liquid pipe (64) is connected to the fourth liquid pipe (63) between the water quality analyzer (44) and the fourth liquid valve. Its outlet end is connected to the third liquid pipe (62) between the third liquid valve and the second water pump (33). The third liquid valve is a backflow preventer. The first liquid valve, the fourth liquid valve, and the fifth liquid valve are associated with the water quality analyzer (44).

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