Tail gas treatment device
By using a combination of a cooler, a sprayer, a dehumidifier, and a boiler to treat the exhaust gas from seafood juice concentration, the high cost problem has been solved, achieving low-cost exhaust gas treatment and compliance with emission standards.
Patent Information
- Application Number
- CN202423192269.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-24
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2034-12-24
AI Technical Summary
Existing seafood juice concentration exhaust gas treatment devices have high equipment and operation and maintenance costs, and high-voltage pulse deodorization electric field equipment is expensive.
A combination device consisting of a cooler, a sprayer, a dehumidifier, a fan, and a boiler connected in sequence is used to treat the exhaust gas through cooling, spraying, dehumidification, and co-firing, so that it meets the emission standards and avoids the use of high-cost equipment.
It reduces equipment and maintenance costs, effectively treats exhaust gas to meet emission standards, reduces damage and corrosion to equipment caused by high temperatures, reduces corrosion caused by humidity, and achieves low-cost exhaust gas treatment.
Smart Images
Figure CN223716718U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to tail gas treatment technical field, in particular to a tail gas treatment device. BACKGROUND
[0002] At present, the production process of seafood juice includes concentration process, in the concentration process, material is heated to boil, then evaporates to produce about 100 DEG C high temperature tail gas (the tail gas will be called seafood juice concentration tail gas hereinafter), the odor concentration of the high temperature tail gas is as high as several million, the non-methane total hydrocarbon is about 150~500mg / m 3 Therefore, the high temperature tail gas must be treated to reach the standard before being discharged.
[0003] Generally, the manufacturers producing seafood juice will use high pressure pulse deodorization electric field to treat seafood juice concentration tail gas, but the equipment cost and operation and maintenance cost of high pressure pulse deodorization electric field are very expensive. CONTENT OF UTILITY MODEL
[0004] The utility model aims at providing a tail gas treatment device to solve the technical problem of high equipment cost and operation and maintenance cost of the prior device for treating seafood juice concentration tail gas.
[0005] In order to realize the above-mentioned purpose, the utility model provides a tail gas treatment device, which comprises a cooling device, a sprayer, a dehumidifier, a fan and a boiler connected in sequence, the boiler is provided with a primary fan air inlet chamber, the cooling device is used for reducing the temperature of the tail gas, the sprayer is used for removing the debris in the tail gas, the dehumidifier is used for reducing the humidity of the tail gas, the fan is used for leading the tail gas to the primary fan air inlet chamber, and the boiler is used for incinerating the tail gas.
[0006] Optionally, the cooling device comprises a plate heat exchanger, the plate heat exchanger is provided with a first channel and a second channel, and the outlet of the first channel is connected to the sprayer.
[0007] Optionally, the plate heat exchanger is provided with oppositely arranged first and second side faces, the inlet of the first channel and the outlet of the second channel are arranged on the first side face, and the outlet of the first channel and the inlet of the second channel are arranged on the second side face.
[0008] Optionally, the utility model further comprises a first connecting pipe, a second connecting pipe, a third connecting pipe and a fourth connecting pipe, one end of the first connecting pipe is connected to the inlet of the first channel, two ends of the second connecting pipe are connected to the outlet of the first channel and the inlet of the sprayer respectively, one end of the third connecting pipe is connected to the outlet of the second channel, and one end of the fourth connecting pipe is connected to the inlet of the second channel.
[0009] Optionally, the first temperature detector, the second temperature detector and the third temperature detector are further included, the first temperature detector is arranged on the first connecting pipe, the second temperature detector is arranged on the second connecting pipe, and the third temperature detector is arranged on the third connecting pipe.
[0010] Optionally, the condensate pipe further includes a first pipe segment, a water seal turning segment and a second pipe segment connected in sequence, the first pipe segment, the water seal turning segment and the second pipe segment are arranged in sequence from high to low, and one end of the first pipe segment away from the water seal turning segment is connected to the second connecting pipe.
[0011] Optionally, the sprayer further includes a spraying tower, a backwater pipe, a spraying pump, a spraying pipe, a nozzle and a filler layer, the spraying tower is internally provided with a spraying cavity, an external surface of the spraying tower is provided with a spraying inlet, a spraying outlet, a water outlet and a backwater outlet communicating with the spraying cavity, the spraying outlet, the backwater outlet, the spraying inlet and the water outlet are arranged in sequence from high to low, the spraying inlet is connected to the cooler, the spraying outlet is connected to the dehumidifier, two ends of the backwater pipe are respectively connected to the water outlet and the backwater outlet, the spraying pump is arranged on the spraying pipe, the spraying pipe and the filler layer are arranged in the spraying cavity, one end of the spraying pipe is connected to the backwater outlet, the nozzle is arranged on the spraying pipe, and the filler layer is located below the spraying pipe.
[0012] Optionally, the sprayer further includes a plurality of the filler layers, a plurality of the spraying pipes and a plurality of the nozzles, the external surface of the spraying tower is provided with a plurality of the backwater outlets at intervals along a vertical direction, the backwater pipe includes a front pipe segment and a plurality of rear pipe segments, one end of the front pipe segment is connected to the water outlet, the other end of the front pipe segment is connected to each of the rear pipe segments, each of the rear pipe segments is connected to the backwater outlet in one-to-one correspondence, each of the spraying pipes is connected to the backwater outlet in one-to-one correspondence, at least one of the nozzles is arranged on one of the spraying pipes, and each of the filler layers is arranged below the spraying pipe in one-to-one correspondence.
[0013] Optionally, the sprayer further includes a water supplement pipe and a drainage pipe, the external surface of the spraying tower is further provided with a water supplement opening and a drainage opening penetrating into the spraying cavity, the drainage opening is lower than the water outlet, the water supplement opening is higher than the water outlet, one end of the water supplement pipe is connected to the water supplement opening, and one end of the drainage pipe is connected to the drainage opening.
[0014] Optionally, the dehumidifier comprises a dew point detector, a water inlet pipe, a water outlet pipe, a surface cooling dehumidifier and a rotary dehumidifier, the inlet of the surface cooling dehumidifier is connected to the sprayer, the outlet of the surface cooling dehumidifier is connected to the inlet of the rotary dehumidifier, the outlet of the rotary dehumidifier is connected to the fan, one end of the water inlet pipe and one end of the water outlet pipe are connected to the surface cooling dehumidifier, and the dew point detector is arranged in the rotary dehumidifier.
[0015] Compared with the prior art, the tail gas treatment device has the beneficial effects that:
[0016] In the tail gas treatment device, the cooling device, the sprayer, the dehumidifier, the fan and the boiler are connected in sequence, and in the process of the tail gas passing through the aforementioned components in sequence, the cooling device reduces the temperature of the tail gas to a certain temperature, so that part of the substances in the tail gas are more easily condensed into solid particles or liquid substances, and the damage and corrosion caused by the high temperature of the tail gas to the equipment and pipelines are reduced, further, the sprayer sprays liquid (which can be water) towards the tail gas in its interior, the liquid and the tail gas contact, and can capture the debris and solid particles and liquid substances condensed in the tail gas to purify the tail gas, but also increases the humidity of the tail gas, further, the dehumidifier is used to reduce the humidity of the tail gas to prevent the tail gas with high humidity from causing water corrosion to the subsequent tail gas treatment equipment, further, the boiler is provided with a primary fan air inlet chamber, a large amount of air is introduced into the primary fan air inlet chamber by other air induction fans, the fan introduces the tail gas into the primary fan air inlet chamber at a certain air volume, the certain amount of tail gas and the large amount of air are mixed together for blending combustion, and then discharged, the blending combustion does not affect the normal operation of the boiler, and can finally treat the tail gas to meet the emission standard; in summary, the utility model does not need to use high-cost equipment such as high-voltage pulse deodorization electric field to treat the seafood juice concentrated tail gas, but sequentially passes through the equipment of cooling, spraying, dehumidifying and blending combustion to treat the seafood juice concentrated tail gas to the emission standard, and then discharges, so that the equipment cost and operation and maintenance cost are low. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 Fig. 1 is a structural schematic view of the tail gas treatment device of the utility model.
[0018] Label: 1, cooler; 11, plate heat exchanger; 12, first channel; 13, second channel; 2, sprayer; 21, spray tower; 211, spray cavity; 22, backwater pipe; 221, front pipe section; 222, rear pipe section; 23, spray pump; 24, spray pipe; 25, spray head; 26, water supply pipe; 27, drain pipe; 28, filler layer; 3, dehumidifier; 31, surface cooling dehumidifier; 32, rotary dehumidifier; 33, water inlet pipe; 34, water outlet pipe; 35, dew point detector; 4, fan; 5, boiler; 6, first connecting pipe; 7, second connecting pipe; 8, third connecting pipe; 9, fourth connecting pipe; 10, first temperature detector; 20, second temperature detector; 30, third temperature detector; 40, condensate pipe; 401, first pipe section; 402, water seal turning section; 403, second pipe section. DETAILED DESCRIPTION
[0019] The specific embodiments of the present application will be further described in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but not to limit the scope of the present application.
[0020] In the description of the present application, it should be understood that the terms "top", "bottom", "inner", "outer", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0021] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0022] As Figure 1 shown, the tail gas treatment device of the present application comprises a cooler 1, a sprayer 2, a dehumidifier 3, a fan 4 and a boiler 5 connected in sequence, the boiler 5 is provided with a primary fan air inlet chamber, the cooler 1 is used to reduce the temperature of the tail gas, the sprayer 2 is used to remove the debris in the tail gas, the dehumidifier 3 is used to reduce the humidity of the tail gas, the fan 4 is used to introduce the tail gas to the primary fan air inlet chamber, and the boiler 5 is used to incinerate the tail gas.
[0023] In the above technical solution, the tail gas sequentially passes through the cooler 1, the sprayer 2, the dehumidifier 3, the fan 4 and the boiler 5, in the process, the cooler 1 reduces the temperature of the tail gas to a certain temperature, so that part of the substances in the tail gas are more easily condensed into solid particles or liquid substances, and the high temperature of the tail gas reduces the damage and erosion caused by the high temperature of the tail gas to the equipment and pipelines, further, the sprayer 2 sprays liquid (which can be water) towards the tail gas inside it, the liquid and the tail gas contact, which can capture the debris and solid particles and liquid substances condensed in the tail gas to purify the tail gas, but also increases the humidity of the tail gas, further, the dehumidifier 3 is used to reduce the humidity of the tail gas to prevent the tail gas with high humidity from causing water corrosion to the subsequent tail gas treatment equipment, further, the boiler 5 is provided with a primary air fan air inlet chamber, a large amount of air is introduced into the primary air fan air inlet chamber by the other air fan 4, the fan 4 introduces a certain amount of tail gas into the primary air fan air inlet chamber, the certain amount of tail gas and a large amount of air are mixed together for blending, and then discharged, the blending does not affect the normal operation of the boiler 5, and can finally treat the tail gas to meet the emission standard; in summary, the utility model does not need to use high-cost equipment such as high-voltage pulse deodorization electric field to treat seafood juice concentrated tail gas, but sequentially passes through the equipment of cooling, spraying, dehumidifying and blending to treat the seafood juice concentrated tail gas to the emission standard, and then discharges, the equipment cost and operation and maintenance cost are low.
[0024] Further, in the blending process, the air volume of the tail gas accounts for not more than 2.5%, which does not affect the normal operation of the boiler 5.
[0025] Further, the cooler 1 comprises a plate heat exchanger 11, the plate heat exchanger 11 is provided with a first channel 12 and a second channel 13, the outlet of the first channel 12 is connected to the sprayer 2, wherein in the process of passing through the first channel 12, the tail gas transfers its heat to the plate heat exchanger 11, and in the process of passing through the second channel 13, the low-temperature medium (which can be normal-temperature or low-temperature desalted water) transfers its heat to the plate heat exchanger 11, achieving the effect of reducing the temperature of the tail gas and effectively utilizing the heat of the tail gas.
[0026] Further, the plate heat exchanger 11 is provided with oppositely arranged first and second sides, the inlet of the first channel 12 and the outlet of the second channel 13 are arranged on the first side, and the outlet of the first channel 12 and the inlet of the second channel 13 are arranged on the second side, so that the tail gas and the low-temperature medium flow in opposite directions in the plate heat exchanger 11, to increase the cooling efficiency and heat exchange efficiency of the tail gas.
[0027] Further, the device further comprises a first connecting pipe 6, a second connecting pipe 7, a third connecting pipe 8 and a fourth connecting pipe 9, one end of the first connecting pipe 6 is connected to the inlet of the first channel 12, two ends of the second connecting pipe 7 are respectively connected to the outlet of the first channel 12 and the inlet of the sprayer 2, one end of the third connecting pipe 8 is connected to the outlet of the second channel 13, one end of the fourth connecting pipe 9 is connected to the inlet of the second channel 13, wherein the first connecting pipe 6 and the second connecting pipe 7 are used for conveying the tail gas, the temperature of the tail gas in the first connecting pipe 6 is higher than the temperature of the tail gas in the second connecting pipe 7, and the temperature of the medium in the third connecting pipe 8 is higher than the temperature of the medium in the fourth connecting pipe 9.
[0028] Further, the device further comprises a first temperature detector 10, a second temperature detector 20 and a third temperature detector 30, the first temperature detector 10 is arranged in the first connecting pipe 6 to detect the temperature of the tail gas before the temperature reduction treatment, the second temperature detector 20 is arranged in the second connecting pipe 7 to detect the temperature of the tail gas after the temperature reduction treatment, and the third temperature detector 30 is arranged in the third connecting pipe 8 to detect the temperature of the medium after the heat exchange treatment, through the above-mentioned monitored temperatures, the flow rates of the input tail gas and the low-temperature medium are adjusted in real time to ensure that the processing procedure of the tail gas is normal and smooth.
[0029] Further, the device further comprises a condensate pipe 40, the condensate pipe 40 comprises a first pipe section 401, a water seal turning section 402 and a second pipe section 403 which are connected in sequence, the first pipe section 401, the water seal turning section 402 and the second pipe section 403 are arranged in sequence from high to low, one end of the first pipe section 401 away from the water seal turning section 402 is connected to the second connecting pipe 7 to discharge the liquid condensed by the tail gas after the low-temperature treatment through the condensate pipe 40, and the method of arranging the liquid in the water seal turning section 402 can prevent the tail gas from leaking, specifically, the shape of the water seal turning section 402 is an S-shaped pipe section arranged horizontally.
[0030] Further, the sprayer 2 comprises a spraying tower 21, a backwater pipe 22, a spraying pump 23, a spraying pipe 24, a nozzle 25 and a filler layer 28, the spraying tower 21 is internally provided with a spraying cavity 211, the outer surface of the spraying tower 21 is provided with a spraying inlet, a spraying outlet, a water outlet and a backwater outlet which are communicated with the spraying cavity 211, the spraying outlet, the backwater outlet, the spraying inlet and the water outlet are sequentially arranged from high to low, the spraying inlet is connected to the cooler 1, the spraying outlet is connected to the dehumidifier 3, the two ends of the backwater pipe 22 are respectively connected to the water outlet and the backwater outlet, the spraying pump 23 is arranged in the spraying pipe 24, the spraying pipe 24 and the filler layer 28 are arranged in the spraying cavity 211, one end of the spraying pipe 24 is connected to the backwater outlet, the nozzle 25 is arranged in the spraying pipe 24, and the filler layer 28 is located below the spraying pipe 24; wherein the tail gas enters the spraying cavity 211 through the spraying inlet, and exits the spraying cavity 211 through the spraying outlet, water is arranged in the spraying cavity 211 and the water level is higher than the water outlet, the water in the spraying cavity 211 can flow out through the spraying pipe 24, be pumped upward to the backwater outlet by the spraying pump 23, then flow to the spraying pipe 24, and then be sprayed into the spraying cavity 211 through the nozzles 25 on the spraying pipe 24, so that the water and the tail gas in the spraying cavity 211 are contacted, the filler layer further increases the contact area between the water and the tail gas, and then the water falls back to the bottom of the spraying cavity 211 to circulate, thereby continuously purifying the tail gas; specifically, the nozzle 25 can be a fan-shaped nozzle, the filler layer 28 is made of hollow balls of PP material, and the side surface of the spraying tower 21 can be provided with an observation window.
[0031] Further, the sprayer 2 further comprises a plurality of the filler layers 28, a plurality of the spraying pipes 24 and a plurality of the nozzles 25, the outer surface of the spraying tower 21 is provided with a plurality of the backwater outlets which are spaced apart along the vertical direction, the backwater pipe 22 comprises a front pipe section 221 and a plurality of rear pipe sections 222, one end of the front pipe section 221 is connected to the water outlet, the other end is connected to each of the rear pipe sections 222, each of the rear pipe sections 222 is connected to the backwater outlet in a one-to-one correspondence, each of the spraying pipes 24 is connected to the backwater outlet in a one-to-one correspondence, each of the spraying pipes 24 is provided with at least one of the nozzles 25, and each of the filler layers 28 is arranged below the spraying pipe in a one-to-one correspondence, so that more water and tail gas are contacted, the contact area is increased, and the purification efficiency is further increased.
[0032] Further, the sprayer 2 further comprises a water supplement pipe 26 and a water discharge pipe 27, and the outer surface of the spray tower 21 is further provided with a water supplement opening and a water discharge opening penetrating to the spray cavity 211, the water discharge opening is lower than the water outlet, and the water supplement opening is higher than the water outlet, one end of the water supplement pipe 26 is connected to the water supplement opening, and one end of the water discharge pipe 27 is connected to the water discharge opening, new water is added into the spray cavity 211 through the water supplement pipe 26, and part of the purified water (contaminated water) is discharged through the water discharge pipe 27, so as to ensure the water purification capacity of the water in the spray cavity 211.
[0033] Further, the dehumidifier 3 comprises a dew point detector 35, a water inlet pipe 33, a water outlet pipe 34, a surface cooling dehumidifier 31 and a rotary dehumidifier 32, the inlet of the surface cooling dehumidifier 31 is connected to the sprayer 2, the outlet of the surface cooling dehumidifier 31 is connected to the inlet of the rotary dehumidifier 32, the outlet of the rotary dehumidifier 32 is connected to the fan 4, one end of the water inlet pipe 33 and one end of the water outlet pipe 34 are connected to the surface cooling dehumidifier 31, and the dew point detector 35 is arranged on the rotary dehumidifier 32, so that the dehumidifier 3 has sufficient dehumidification capacity and can continuously reduce the humidity of the tail gas.
[0034] Further, the specific connection mode of the fixed setting and the fixed connection refers to the relative position relationship of the two components that can be fixedly connected, including being fixed by a connecting piece, being fixed by welding, being fixed by an adhesive, being fixed by one-piece forming, and being fixed by buckle connection.
[0035] Further, the connecting piece comprises a fastener, a strap, a binding rope, a pneumatic connecting element, a hydraulic connecting element, a flange plate, a magic tape and a button.
[0036] In summary, the tail gas treatment device provided by the embodiment of the present application has the following technical effects:
[0037] The tail gas treatment device is sequentially connected with a cooler 1, a sprayer 2, a dehumidifier 3, a fan 4 and a boiler 5, in the process of tail gas passing through the aforementioned components in sequence, the cooler 1 reduces the temperature of the tail gas to a certain temperature, so that part of the substances in the tail gas are more easily condensed into solid particles or liquid substances, and the damage and erosion caused by the high temperature of the tail gas to each device and pipeline are reduced, further, the sprayer 2 sprays liquid (which can be water) towards the tail gas in its interior, the liquid and the tail gas contact, can capture the debris and solid particles and liquid substances condensed in the tail gas, to purify the tail gas, but also increase the humidity of the tail gas, further, the dehumidifier 3 is used to reduce the humidity of the tail gas, to prevent the tail gas with high humidity from causing water corrosion to the subsequent tail gas treatment equipment, further, the boiler 5 is provided with a primary fan air inlet chamber, a large amount of air is introduced into the primary fan air inlet chamber by the other induced fan 4, the fan 4 introduces the tail gas into the primary fan air inlet chamber with a certain air volume, the certain amount of tail gas and a large amount of air are mixed together for blending combustion, and then discharged, the blending combustion does not affect the normal operation of the boiler 5, and can perform final treatment on the tail gas, so that the tail gas reaches the emission standard; in summary, the utility model does not need to use high-cost equipment such as high-voltage pulse deodorization electric field to treat seafood juice concentrated tail gas, but sequentially passes through the equipment of cooling, spraying, dehumidifying and blending combustion to treat the seafood juice concentrated tail gas to the emission standard, and then discharges, so that the equipment cost and operation and maintenance cost are low.
[0038] The above only describes the preferred embodiments of the utility model, and it should be noted that, for ordinary skilled persons in the technical field, without departing from the technical principles of the utility model, a number of improvements and replacements can be made, and these improvements and replacements should also be considered as the protection range of the utility model.
Claims
1. An exhaust gas treatment device, characterized by, The device comprises a temperature reducer (1), a sprayer (2), a dehumidifier (3), a fan (4) and a boiler (5) connected in sequence, the boiler (5) is provided with a primary fan air inlet chamber, the temperature reducer (1) is used for reducing the temperature of the tail gas, the sprayer (2) is used for removing the debris in the tail gas, the dehumidifier (3) is used for reducing the humidity of the tail gas, the fan (4) is used for leading the tail gas to the primary fan air inlet chamber, and the boiler (5) is used for incinerating the tail gas.
2. The exhaust treatment device of claim 1, wherein, The temperature reducer (1) comprises a plate heat exchanger (11) provided with a first channel (12) and a second channel (13), and the outlet of the first channel (12) is connected to the sprayer (2).
3. The exhaust treatment device of claim 2, wherein, The plate heat exchanger (11) is provided with a first side and a second side arranged oppositely, the inlet of the first channel (12) and the outlet of the second channel (13) are arranged on the first side, and the outlet of the first channel (12) and the inlet of the second channel (13) are arranged on the second side.
4. The exhaust treatment device of claim 2, wherein, The device further comprises a first connecting pipe (6), a second connecting pipe (7), a third connecting pipe (8) and a fourth connecting pipe (9), one end of the first connecting pipe (6) is connected to the inlet of the first channel (12), both ends of the second connecting pipe (7) are connected to the outlet of the first channel (12) and the inlet of the sprayer (2) respectively, one end of the third connecting pipe (8) is connected to the outlet of the second channel (13), and one end of the fourth connecting pipe (9) is connected to the inlet of the second channel (13).
5. The exhaust treatment device of claim 4, wherein, The device further comprises a first temperature detector (10), a second temperature detector (20) and a third temperature detector (30), the first temperature detector (10) is arranged on the first connecting pipe (6), the second temperature detector (20) is arranged on the second connecting pipe (7), and the third temperature detector (30) is arranged on the third connecting pipe (8).
6. The exhaust treatment device of claim 4, wherein, The device further comprises a condensate pipe (40) comprising a first pipe section (401), a water seal turning section (402) and a second pipe section (403) connected in sequence, the first pipe section (401), the water seal turning section (402) and the second pipe section (403) are arranged from high to low in sequence, and one end of the first pipe section (401) away from the water seal turning section (402) is connected to the second connecting pipe (7).
7. The exhaust treatment device of claim 1, wherein, The sprayer (2) comprises a spraying tower (21), a backwater pipe (22), a spraying pump (23), a spraying pipe (24), a nozzle (25) and a filler layer (28), the spraying tower (21) is internally provided with a spraying cavity (211), the outer surface of the spraying tower (21) is provided with a spraying inlet, a spraying outlet, a water outlet and a backwater outlet which communicate with the spraying cavity (211), the spraying outlet, the backwater outlet, the spraying inlet and the water outlet are sequentially arranged from high to low, the spraying inlet is connected to the cooler (1), the spraying outlet is connected to the dehumidifier (3), the two ends of the backwater pipe (22) are respectively connected to the water outlet and the backwater outlet, the spraying pump (23) is arranged in the spraying pipe (24), the spraying pipe (24) and the filler layer (28) are arranged in the spraying cavity (211), one end of the spraying pipe (24) is connected to the backwater outlet, the nozzle (25) is arranged in the spraying pipe (24), and the filler layer (28) is located below the spraying pipe (24).
8. The exhaust treatment device of claim 7, wherein, The sprayer (2) further comprises a plurality of the filler layers (28), a plurality of the spraying pipes (24) and a plurality of the nozzles (25), the outer surface of the spraying tower (21) is provided with a plurality of the backwater outlets which are spaced apart in the vertical direction, the backwater pipe (22) comprises a front pipe section (221) and a plurality of rear pipe sections (222), one end of the front pipe section (221) is connected to the water outlet, the other end of the front pipe section (221) is connected to each of the rear pipe sections (222), each of the rear pipe sections (222) is connected to the backwater outlet in a one-to-one correspondence, each of the spraying pipes (24) is connected to the backwater outlet in a one-to-one correspondence, at least one nozzle (25) is arranged in one spraying pipe (24), and each of the filler layers (28) is arranged below the spraying pipe in a one-to-one correspondence.
9. The exhaust treatment device of claim 7, wherein, The sprayer (2) further comprises a water supplement pipe (26) and a drainage pipe (27), the outer surface of the spraying tower (21) is further provided with a water supplement outlet and a drainage outlet which penetrate into the spraying cavity (211), the drainage outlet is lower than the water outlet, and the water supplement outlet is higher than the water outlet, one end of the water supplement pipe (26) is connected to the water supplement outlet, and one end of the drainage pipe (27) is connected to the drainage outlet.
10. The exhaust treatment device of claim 1, wherein, The dehumidifier (3) comprises a dew point detector (35), an inlet water pipe (33), an outlet water pipe (34), a surface cooling dehumidifier (31) and a rotary dehumidifier (32), the inlet of the surface cooling dehumidifier (31) is connected to the sprayer (2), the outlet of the surface cooling dehumidifier (31) is connected to the inlet of the rotary dehumidifier (32), the outlet of the rotary dehumidifier (32) is connected to the fan (4), one end of the inlet water pipe (33) and one end of the outlet water pipe (34) are connected to the surface cooling dehumidifier (31), and the dew point detector (35) is arranged in the rotary dehumidifier (32).