Furnace waste gas treatment device

Abstract

The utility model relates to the field of waste gas treatment, in particular to a kiln waste gas treatment device which comprises a dynamic wave absorption device, an alkaline washing tower and a wet-type electric dust remover which are respectively provided with a gas inlet and a gas outlet. According to the combined waste gas treatment method based on chemical absorption and electrostatic adsorption, the temperature in the waste gas is reduced through the processes of collection, spraying cooling, chemical absorption, electrostatic adsorption and the like, and the waste gas can be recycled. Meanwhile, gaseous pollutants in the waste gas are fully removed, and certain environmental protection benefits are achieved.

Description

Technical Field

[0001] The utility model relates to the field of waste gas treatment, in particular to a furnace waste gas treatment device. Background Art

[0002] Currently, ferric phosphate companies generate a certain amount of waste gas during their production process. This waste gas primarily consists of sulfur trioxide and particulate matter, and is also high in temperature. Currently, this type of waste gas is difficult to treat. Existing treatment methods for this waste gas are inefficient and environmentally unfriendly. Using only a single method for treatment results in poor results, so a furnace waste gas treatment device is essential. Utility Model Content

[0003] The purpose of the utility model is to provide a furnace waste gas treatment device to improve the waste gas treatment effect, the treatment process is efficient and environmentally friendly, so as to solve the existing technical defects and unmet technical requirements.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a furnace waste gas treatment device, comprising: a power wave absorption device, an alkali washing tower and a wet electrostatic precipitator, wherein the power wave absorption device, the alkali washing tower and the wet electrostatic precipitator are all provided with an air inlet and an air outlet, and the power wave absorption device, the alkali washing tower and the wet electrostatic precipitator are connected in sequence through the air inlet and the air outlet.

[0005] In this application, the dynamic wave absorption device is used to absorb sulfur trioxide in the exhaust gas and intercept some particulate matter at the same time, and the exhaust gas is further passed into the alkali washing tower to fully absorb the sulfur trioxide to ensure the absorption effect of sulfur trioxide in the exhaust gas, and the exhaust gas is passed into the wet electrostatic precipitator to meet the stable emission standards of acid mist and particulate matter.

[0006] In this application, the purified waste gas is discharged into the exhaust pipe through the induced draft fan and discharged into the air, while the absorption liquid can be circulated through the circulation pump and finally discharged into the sewage station for treatment.

[0007] Preferably, the power wave absorbing device comprises a power wave reverse nozzle, the end of the power wave reverse nozzle is connected to a first circulating water tank, and the first circulating water tank is arranged below the power wave reverse nozzle;

[0008] The power wave reverse nozzle is provided with a power wave reverse nozzle air inlet and a power wave reverse nozzle air outlet, the power wave reverse nozzle air outlet is connected to the first circulating water tank, the power wave reverse nozzle air inlet is provided at one end of the power wave reverse nozzle away from the power wave reverse nozzle air outlet, and the power wave reverse nozzle air inlet is opened on the side wall of the power wave reverse nozzle;

[0009] Preferably, the power wave reverse nozzle is further provided with:

[0010] A first liquid inlet is provided on the side wall of the power wave reverse nozzle, wherein the first liquid inlet is opened at one end of the power wave reverse nozzle close to the air outlet of the power wave reverse nozzle;

[0011] The first inspection port is provided on a side of the power wave reverse nozzle close to the first liquid inlet and is used for inspection of the first liquid inlet and the air outlet of the power wave reverse nozzle.

[0012] Preferably, the first circulating water tank is provided with:

[0013] A circulating water tank air inlet, the circulating water tank air inlet is arranged at the top of the first circulating water tank, and the circulating water tank air inlet is connected to the wave reverse nozzle outlet;

[0014] A circulating water tank air outlet, wherein the circulating water tank air inlet is arranged at the top of the first circulating water tank, and the circulating water tank air outlet is connected to the wet electrostatic precipitator;

[0015] The first liquid outlet is opened on the side wall of the first circulating water tank near the bottom.

[0016] The first sewage outlet is opened on the side wall of the first circulating water tank near the bottom, and the first sewage outlet is located between the bottom of the first circulating water tank and the first liquid outlet in the horizontal direction.

[0017] Preferably, the first circulating water tank is further provided with:

[0018] a first inspection port, the first inspection port being opened on a side wall of the first circulating water tank;

[0019] a first overflow port, the first overflow port being provided on a side wall of the first circulating water tank near an air outlet of the circulating water tank;

[0020] a first water replenishment port, the first water replenishment port being arranged at the top of the first circulating water tank;

[0021] A pH meter port is provided on the side wall of the circulating water tank, and the horizontal position of the pH meter port is between the overflow port and the liquid outlet;

[0022] A conductivity meter interface, which is provided on the side wall of the first circulating water tank and is located horizontally between the overflow port and the liquid outlet;

[0023] The liquid level gauge port is opened on the side wall of the first circulating water tank, and the liquid level gauge port includes at least a first liquid level gauge port and a second liquid level gauge port. The first liquid level port is arranged between the top of the first circulating water tank and the overflow port, and the horizontal position of the second liquid level gauge is between the liquid outlet and the conductivity meter interface.

[0024] Preferably, the alkali washing tower is provided with:

[0025] An air inlet of the alkali washing tower is provided on a side wall of the alkali washing tower near the bottom, and is connected to an air outlet of the circulating water tank through a first air transmission pipe;

[0026] An alkali washing tower air outlet, wherein the alkali washing tower air inlet is arranged at the top of the alkali washing tower, and the alkali washing tower air outlet is connected to the wet electrostatic precipitator through a second air transmission pipe;

[0027] The demisting layer is arranged below the gas outlet of the alkali washing tower. The demisting layer is mainly composed of a 500mm high demisting filler, which is a φ38 multi-faceted hollow ball;

[0028] A packing layer, which is arranged below the demisting layer and mainly consists of a packing with a height of 1000 mm, and the packing is a φ50PP ball ring;

[0029] A second circulating water tank is formed on one side of the alkali washing tower near the bottom and extends away from the alkali washing tower, and the second circulating water tank and the alkali washing tower are integrally arranged;

[0030] A spray layer is provided below the demisting layer and the packing layer. The spray layer is composed of a spray pipe and a nozzle. One end of the spray pipe is connected to the nozzle, and the other end extends into the absorption liquid at the bottom of the alkali washing tower;

[0031] A porous plate liquid holding layer, the porous plate liquid holding layer is arranged below the lowest spray layer;

[0032] Preferably, the alkali washing tower is further provided with:

[0033] Manhole sight glasses, the manhole sight glasses are opened on the side wall of the alkali washing tower, and the manhole sight glasses include a first manhole sight glass, a second manhole sight glass and a third manhole sight glass; the first manhole sight glass is arranged below the spray layer for observing the spraying effect of the spray layer, the second manhole sight glasses are respectively arranged on one side of the demisting layer and one side of each packing layer for observing the working conditions of the demisting packing and the packing, and the third manhole sight glass is arranged near the bottom of the alkali washing tower for observing the absorption liquid;

[0034] A second liquid inlet is evenly distributed on the side wall of the alkali washing tower, and the second liquid inlet is arranged below the liquid holding layer of the porous plate;

[0035] a second liquid outlet, the second liquid outlet being opened on both sides of the second circulating water tank;

[0036] A dosing port, the dosing port being arranged at the top of the second circulating water tank;

[0037] a second water supply port, the second water supply port being arranged at the top of the second circulating water tank;

[0038] A second sewage outlet is provided on one side of the alkali washing tower close to the bottom of the alkali washing tower, and the level of the second sewage outlet is lower than the second liquid outlet;

[0039] A second overflow port is provided on one side of the alkali washing tower, and the level of the second overflow port is located below the second liquid inlet and above the set absorption liquid level;

[0040] an alkali washing tower liquid level gauge port, the alkali washing tower liquid level gauge port being opened on one side of the alkali washing tower, and the horizontal heights of the alkali washing tower liquid level gauge port being respectively above and below the overflow port;

[0041] The third inspection port, the second inspection port is opened on the side wall of the alkali washing tower below the porous plate liquid holding layer.

[0042] Preferably, the wet electrostatic precipitator is provided with:

[0043] The dust collector air inlet is arranged on one side of the dust collector near the bottom;

[0044] A dust collector air outlet, wherein the dust collector air outlet is located at the top of the dust collector;

[0045] An air distribution layer, which is arranged above the air inlet of the dust collector and is composed of a plurality of air distribution plates;

[0046] An electrostatic adsorption layer is provided above the air distribution layer and is composed of an electrostatic adsorption cathode tube and an electrostatic adsorption anode tube;

[0047] Backwash spraying layer by layer, the backwash layer is arranged above the electrostatic adsorption scale.

[0048] Preferably, a transparent organic glass plate is installed in the manhole sight glass.

[0049] Compared with the prior art, the beneficial effects of the present invention are:

[0050] 1. This application is capable of fully treating sulfur trioxide in the exhaust gas and ensuring the exhaust gas treatment standards by providing a dynamic wave absorption device and an alkaline washing tower with multiple packing layers. At the same time, the absorption liquid in each device in this application can be adjusted according to the actual exhaust gas composition, or the steps can be changed, which has strong equipment operation flexibility.

[0051] 2. This application sets up a first circulating water tank and a second circulating water tank, which can recycle the absorption liquid. The absorption liquid after absorption saturation enters the sewage pool for conditioning and treatment, saving resources and being environmentally friendly. The wet electrostatic precipitator is provided with a corresponding backwash structure to flush the particulate matter adsorbed on the inner wall of the electrostatic adsorption anode tube, ensuring the absorption effect and improving the exhaust gas treatment efficiency.

[0052] 3. This application is a combined waste gas treatment method based on chemical absorption and electrostatic adsorption. Through collection, spray cooling, chemical absorption, electrostatic adsorption and other processes, the temperature of the waste gas is reduced, and the gaseous pollutants in the waste gas are fully removed, which has certain environmental benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0054] Figure 2 This is a schematic diagram of the overall structure of the power wave reverse nozzle in the utility model;

[0055] Figure 3 It is a left view of the utility model;

[0056] Figure 4 This is a side view of the first circulating water tank in the present utility model;

[0057] Figure 5 This is a schematic diagram of the internal structure of the alkali washing tower in the utility model;

[0058] Figure 6 It is a top view of the alkali washing tower in this utility model;

[0059] Figure 7 It is a top view of the spray layer in the utility model;

[0060] Figure 8 This is a schematic diagram of the overall structure of the wet electrostatic precipitator in the utility model;

[0061] In the figure: power wave absorption device 1, alkali washing tower 2, wet electrostatic precipitator 3, power wave reverse spray pipe 4, first circulating water tank 5, power wave reverse spray pipe air inlet 6, power wave reverse spray pipe air outlet 7, first liquid inlet 8, first inspection port 9, circulating water tank air inlet 10, circulating water tank air outlet 11, first liquid outlet 12, first sewage outlet 13, second inspection port 14, first overflow port 15, first water replenishment port 16, pH meter port 17, conductivity meter interface 18, first liquid level gauge port 19, second liquid level gauge port 20, alkali washing tower air inlet 21, First air pipe 22, alkali washing tower air outlet 23, second air pipe 24, demisting layer 25, packing layer 26, second circulating water tank 27, spray layer 28, porous plate liquid holding layer 29, first manhole sight glass 30, second manhole sight glass 31, third manhole sight glass 32, second liquid inlet 33, second liquid outlet 34, dosing port 35, second water replenishment port 36, second sewage outlet 37, second overflow port 38, third inspection port 39, dust collector air inlet 40, dust collector air outlet 41, induced draft fan 44, exhaust duct 45, third air pipe 46. DETAILED DESCRIPTION

[0062] The following is a combination of the appended examples of the present invention Figure 1-8 The technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0063] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, features specified as "first" or "second" may explicitly or implicitly include one or more of such features.

[0064] See also Figure 1-8 , embodiments of the present utility model:

[0065] Example:

[0066] like Figure 1 As shown: A furnace exhaust gas treatment device includes: a power wave absorption device 1, an alkali washing tower 2 and a wet electrostatic precipitator 3, wherein the power wave absorption device 1, the alkali washing tower 2 and the wet electrostatic precipitator 3 are all provided with an air inlet and an air outlet, and the power wave absorption device 1, the alkali washing tower 2 and the wet electrostatic precipitator 3 are connected in sequence through the air inlet and the air outlet.

[0067] Specifically, the exhaust gas purification steps performed by the above device in this embodiment are as follows: Step 1: The collected exhaust gas enters the power wave absorption device 1 after dust removal, absorbs sulfur trioxide in the exhaust gas, and intercepts some particulate matter at the same time;

[0068] Step 2: After being pre-treated by the dynamic wave absorption device 1, the exhaust gas passes through the alkali washing tower 2 to ensure the absorption effect of sulfur trioxide;

[0069] Step 3: In order to meet the stable emission standards of acid mist and particulate matter, the exhaust gas after alkali washing enters the wet electrostatic precipitator 3 again, and the purified exhaust gas is discharged into the exhaust pipe 45 through the induced draft fan 44 and discharged into the air.

[0070] Step 4: The absorption liquid can be circulated through a circulation pump and finally discharged into a sewage station for treatment.

[0071] The wet electrostatic precipitator 3 is connected to the induced draft fan 44 through the third air duct 46 , and the induced draft fan 44 is further connected to the exhaust pipe 45 .

[0072] like Figure 1 As shown in FIG. 1 , the power wave absorbing device 1 includes a power wave reverse nozzle 4 , the end of which is connected to a first circulating water tank 5 , which is disposed below the power wave reverse nozzle 4 ;

[0073] The power wave reverse spray pipe 4 is provided with a power wave reverse spray pipe air inlet 6 and a power wave reverse spray pipe air outlet 7. The power wave reverse spray pipe air outlet 7 is connected to the first circulating water tank 5. The power wave reverse spray pipe air inlet 6 is provided at one end of the power wave reverse spray pipe 4 away from the power wave reverse spray pipe air outlet 7, and the power wave reverse spray pipe air inlet 6 is opened on the side wall of the power wave reverse spray pipe 4.

[0074] Specifically, in this embodiment, only one power wave up-milling head is provided in the power wave absorbing device 1 .

[0075] In this embodiment, by providing a dynamic wave absorption device 1 and an alkaline washing tower 2 provided with a multi-layer packing layer 26, the sulfur trioxide in the exhaust gas can be fully treated to ensure the exhaust gas treatment standard. At the same time, the absorption liquid in each device in this application can be adjusted according to the actual exhaust gas composition, or the steps can be changed, and the equipment operation flexibility is relatively strong.

[0076] Moreover, this application is a combined waste gas treatment method based on chemical absorption and electrostatic adsorption. Through collection, spray cooling, chemical absorption, electrostatic adsorption and other processes, the temperature of the waste gas is reduced, and the gaseous pollutants in the waste gas are fully removed, which has certain environmental benefits.

[0077] like Figure 2 As shown: the power wave reverse nozzle 4 is also provided with:

[0078] A first liquid inlet 8 is provided on the side wall of the power wave reverse nozzle 4. The first liquid inlet 8 is opened on one end of the power wave reverse nozzle 4 close to the power wave reverse nozzle air outlet 7;

[0079] The first inspection port 9 is provided on a side of the power wave reverse nozzle 4 close to the first liquid inlet 8 and is used for inspection of the first liquid inlet 8 and the gas outlet of the power wave reverse nozzle 4 .

[0080] In this embodiment, the first inspection port 9 is provided near the connection between the power wave reverse nozzle 4 and the first circulating water tank 5, so as to facilitate observation, inspection and maintenance of the structure near the connection between the two.

[0081] like Figure 3 As shown: the first circulating water tank 5 is provided with:

[0082] The circulating water tank air inlet 10 is provided at the top of the first circulating water tank 5 and is connected to the air outlet of the wave reverse nozzle;

[0083] The circulating water tank air outlet 11, the circulating water tank air inlet 10 is provided at the top of the first circulating water tank 5, and the circulating water tank air outlet 11 is communicated with the wet electrostatic precipitator 3;

[0084] The first liquid outlet 12 is opened on the side wall of the first circulating water tank 5 near the bottom.

[0085] The first sewage outlet 13 is opened on the side wall of the first circulating water tank 5 near the bottom, and the first sewage outlet 13 is located between the bottom of the first circulating water tank 5 and the liquid outlet in the horizontal direction.

[0086] In this embodiment, when the dynamic wave absorption device 1 is used, its internal temperature must be lower than 220°C, and it is used under normal pressure. The air volume it processes is 12000m3. The overall material is 316L stainless steel, and the overall wall thickness is 10mm.

[0087] like Figure 4 As shown: the first circulating water tank 5 is also provided with:

[0088] A second inspection port 14 is provided on a side wall of the first circulating water tank 5;

[0089] A first overflow port 15 is provided on a side wall of the first circulating water tank 5 near the circulating water tank air outlet 11;

[0090] A first water replenishment port 16 is provided at the top of the first circulating water tank 5;

[0091] A pH meter port 17 is provided on the side wall of the circulating water tank, and the pH meter port 17 is positioned horizontally between the overflow port and the liquid outlet;

[0092] A conductivity meter interface 18 is provided on the side wall of the first circulating water tank 5 and is positioned horizontally between the overflow port and the liquid outlet;

[0093] The liquid level gauge port is opened on the side wall of the first circulating water tank 5, and the liquid level gauge port includes at least a first liquid level gauge port 19 and a second liquid level gauge port 20. The first liquid level port is arranged between the top of the first circulating water tank 5 and the overflow port, and the horizontal position of the second liquid level gauge is between the liquid outlet and the conductivity meter interface 18.

[0094] In this embodiment, when the first circulating water tank 5 is in use, the temperature must be below 220°C and it must be practical at normal pressure. The entire material is 316L stainless steel, the bottom plate is 10 mm thick, the wall thickness is 8 mm, and the cover plate is 6 mm thick. The cover plate is the top of the first circulating water tank 5. The main body of the first circulating water tank 5 weighs 2.5 tons, and the liquid storage height is 1.6 m, about 6.0 tons, with a total static load of 8.5 tons.

[0095] like Figure 5 and 7 As shown: the alkali washing tower 2 is provided with:

[0096] The alkali washing tower air inlet 21 is opened on the side wall of the alkali washing tower 2 near the bottom, and the alkali washing air inlet is connected to the circulating water tank outlet 11 through the first air pipe 22;

[0097] The alkali washing tower air outlet 23, the alkali washing tower air inlet 21 is arranged at the top of the alkali washing tower 2, and the alkali washing tower air outlet 23 is connected to the wet electrostatic precipitator 3 through the second air transmission pipe 24;

[0098] The demisting layer 25 is provided below the gas outlet 23 of the alkali washing tower. The demisting layer 25 is mainly composed of a demisting filler with a height of 500 mm, and the demisting filler is a φ38 multifaceted hollow ball;

[0099] A packing layer 26 is provided below the demisting layer 25 and is mainly composed of a packing with a height of 1000 mm, wherein the packing is a φ50PP ball ring;

[0100] A second circulating water tank 27 is formed on one side of the alkali washing tower 2 near the bottom thereof and extending away from the alkali washing tower 2. The second circulating water tank 27 is integrally provided with the alkali washing tower 2;

[0101] A spray layer 28 is provided below the demisting layer 25 and the packing layer 26. The spray layer 28 is composed of a spray pipe and a nozzle. One end of the spray pipe is connected to the nozzle, and the other end extends into the absorption liquid at the bottom of the alkali washing tower 2;

[0102] The porous plate liquid holding layer 29 is arranged below the lowest spray layer 28 .

[0103] Specifically, in this embodiment, a demisting layer 25, three packing layers 26, the layer inside the four-layer basin and a porous plate liquid holding layer 29 are provided. The order from top to bottom is: demisting layer 25, spray layer 28, packing layer 26, spray layer 28, packing layer 26, spray layer 28, packing layer 26, spray layer 28 and porous plate liquid holding layer 29, and the height of a single-layer packing layer 26 is 1000 mm, and the height of a single-layer demisting layer 25 is 500 mm.

[0104] Each spray layer 28 is provided with 7 No. 6 nozzles, 28 in total, and each layer has 7 nozzles distributed in three rows, with a distance between nozzles in each row of 600 mm.

[0105] like Figure 5-6 As shown: the alkali washing tower 2 is also provided with:

[0106] Manhole sight glasses, the manhole sight glasses are opened on the side wall of the alkali washing tower 2, and the manhole sight glasses include a first manhole sight glass 30, a second manhole sight glass 31 and a third manhole sight glass; the first manhole sight glass 30 is arranged below the spray layer 28 for observing the spray effect of the spray layer 28, the second manhole sight glasses 31 are respectively arranged on one side of the demisting layer 25 and one side of each packing layer 26 for observing the working conditions of the demisting packing and the packing, the third manhole sight glass 32, the third manhole sight glass 32 is arranged near the bottom of the alkali washing tower 2 for observing the absorption liquid;

[0107] The second liquid inlet 33 is evenly distributed on the side wall of the alkali washing tower 2, and the second liquid inlet 33 is arranged below the porous plate liquid holding layer 29;

[0108] The second liquid outlet 34 is opened on both sides of the second circulating water tank 27;

[0109] A dosing port 35 is provided on the top of the second circulating water tank 27;

[0110] A second water replenishment port 36 is provided at the top of the second circulating water tank 27;

[0111] A second sewage outlet 37 is provided on one side of the alkali washing tower 2 close to the bottom of the alkali washing tower 2, and the level of the second sewage outlet 37 is lower than the liquid outlet;

[0112] A second overflow port 38 is provided on one side of the alkali washing tower 2, and the level of the second overflow port 38 is located below the liquid inlet and above the set absorption liquid level;

[0113] The liquid level gauge port of the alkali washing tower 2 is opened on one side of the alkali washing tower 2, and the horizontal heights of the liquid level gauge port of the alkali washing tower 2 are respectively above and below the overflow port;

[0114] The third inspection port is opened on the side wall of the alkali washing tower 2 below the porous plate liquid holding layer 29.

[0115] Specifically, in this embodiment, two second liquid outlets 34 are provided and arranged opposite to each other, and four second liquid inlets 33 are provided.

[0116] like Figure 8 As shown: the wet electrostatic precipitator 3 is provided with:

[0117] The dust collector air inlet 40 is provided on one side of the wet electrostatic precipitator 3 near the bottom;

[0118] A dust collector air outlet 41, the dust collector air outlet 41 is located at the top of the wet electrostatic precipitator 3;

[0119] An air distribution layer, which is arranged above the air inlet 40 of the dust collector and is composed of a plurality of air distribution plates;

[0120] An electrostatic adsorption layer is provided above the air distribution layer and is composed of an electrostatic adsorption cathode tube and an electrostatic adsorption anode tube;

[0121] The backwash spray layer 28 is arranged above the electrostatic adsorption scale.

[0122] A transparent organic glass plate is installed in the manhole sight glass. The periphery of the screw hole on the glass plate is rounded and polished to prevent it from being squeezed and cracked.

[0123] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes that fall within the meaning and range of equivalents of the claims are included in the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0124] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that those skilled in the art can understand.

Claims

1. A furnace exhaust gas treatment device, characterized in that: include: A power wave absorption device (1), an alkali washing tower (2) and a wet electrostatic precipitator (3) are provided, wherein the power wave absorption device (1), the alkali washing tower (2) and the wet electrostatic precipitator (3) are all provided with an air inlet and an air outlet, and the power wave absorption device (1), the alkali washing tower (2) and the wet electrostatic precipitator (3) are sequentially connected via the air inlet and the air outlet.

2. A furnace exhaust gas treatment device according to claim 1, characterized in that: The power wave absorption device (1) comprises a power wave reverse nozzle (4), the end of the power wave reverse nozzle (4) is connected to a first circulating water tank (5), and the first circulating water tank (5) is arranged below the power wave reverse nozzle (4); The power wave reverse nozzle (4) is provided with a power wave reverse nozzle air inlet (6) and a power wave reverse nozzle air outlet (7), the power wave reverse nozzle air outlet (7) is communicated with the first circulating water tank (5), the power wave reverse nozzle air inlet (6) is provided at one end of the power wave reverse nozzle (4) away from the power wave reverse nozzle air outlet (7), and the power wave reverse nozzle air inlet (6) is opened on the side wall of the power wave reverse nozzle (4).

3. The furnace exhaust gas treatment device according to claim 2, characterized in that: The power wave reverse nozzle (4) is also provided with: A first liquid inlet (8) is provided on the side wall of the power wave reverse nozzle (4), wherein the first liquid inlet (8) is opened at one end of the power wave reverse nozzle (4) close to the power wave reverse nozzle air outlet (7); A first inspection port (9) is provided on a side of the power wave reverse nozzle (4) close to the first liquid inlet (8) and is used for inspection of the first liquid inlet (8) and the air outlet of the power wave reverse nozzle (4).

4. A furnace exhaust gas treatment device according to claim 3, characterized in that: The first circulating water tank (5) is provided with: A circulating water tank air inlet (10), the circulating water tank air inlet (10) being arranged at the top of the first circulating water tank (5), and the circulating water tank air inlet (10) being in communication with the wave reverse nozzle air outlet; A circulating water tank air outlet (11), wherein the circulating water tank air inlet (10) is arranged at the top of the first circulating water tank (5), and the circulating water tank air outlet (11) is communicated with the wet electrostatic precipitator (3); A first liquid outlet (12), the first liquid outlet (12) being opened on a side wall of the first circulating water tank (5) near the bottom; A first sewage outlet (13) is provided on a side wall of the first circulating water tank (5) near the bottom, and the first sewage outlet (13) is located between the bottom of the first circulating water tank (5) and the first liquid outlet (12) in the horizontal direction.

5. The furnace exhaust gas treatment device according to claim 4, characterized in that: The first circulating water tank (5) is further provided with: A second inspection port (14), the second inspection port (14) being opened on a side wall of the first circulating water tank (5); A first overflow port (15), the first overflow port (15) being opened on a side wall of the first circulating water tank (5) near the circulating water tank air outlet (11); A first water replenishment port (16), the first water replenishment port (16) being arranged at the top of the first circulating water tank (5); A pH meter port (17), the pH meter port (17) is opened on the side wall of the circulating water tank, and the horizontal position of the pH meter port (17) is between the first overflow port (15) and the first liquid outlet (12); A conductivity meter interface (18), the conductivity meter interface (18) is provided on the side wall of the first circulating water tank (5), and the horizontal position of the conductivity meter interface (18) is located between the overflow port and the liquid outlet; A liquid level gauge port is provided on a side wall of a first circulating water tank (5), and the liquid level gauge port comprises at least a first liquid level gauge port (19) and a second liquid level gauge port (20). The first liquid level gauge port (19) is provided between the top of the first circulating water tank (5) and the overflow port, and the horizontal position of the second liquid level gauge port (20) is between the liquid outlet and the conductivity meter interface (18).

6. The furnace exhaust gas treatment device according to claim 1, characterized in that: The alkali washing tower (2) is provided with: An alkali washing tower air inlet (21), the alkali washing tower air inlet (21) is opened on the side wall of the alkali washing tower (2) near the bottom, and the alkali washing tower air inlet (21) is connected to the circulating water tank air outlet (11) through a first air transmission pipe (22); An alkali washing tower air outlet (23), wherein the alkali washing tower air inlet (21) is arranged at the top of the alkali washing tower (2), and the alkali washing tower air outlet (23) is communicated with the wet electrostatic precipitator (3) through a second air transmission pipe (24); A demisting layer (25), the demisting layer (25) is arranged below the gas outlet (23) of the alkali washing tower, the demisting layer (25) is mainly composed of a demisting filler with a height of 500 mm, and the demisting filler is a φ38 multi-faceted hollow ball; A packing layer (26), the packing layer (26) is arranged below the demisting layer (25), the packing layer (26) mainly consists of a packing with a height of 1000 mm, and the packing is a φ50PP ball ring; A second circulating water tank (27), wherein one side of the alkali washing tower (2) near the bottom extends away from the alkali washing tower (2) to form the second circulating water tank (27), and the second circulating water tank (27) and the alkali washing tower (2) are integrally arranged; A spray layer (28) is provided below the demisting layer (25) and the packing layer (26). The spray layer (28) is composed of a spray pipe and a nozzle. One end of the spray pipe is connected to the nozzle, and the other end extends into the absorption liquid at the bottom of the alkali washing tower (2); The porous plate liquid holding layer (29) is arranged below the lowest spray layer (28).

7. The furnace exhaust gas treatment device according to claim 6, characterized in that: The alkali washing tower (2) is also provided with: A manhole sight glass, the manhole sight glass is provided on the side wall of the alkali washing tower (2), the manhole sight glass comprises a first manhole sight glass (30), a second manhole sight glass (31) and a third manhole sight glass (32), the first manhole sight glass (30) is provided below the spray layer (28) for observing the spraying effect of the spray layer (28), the second manhole sight glass (31) is provided on one side of the demisting layer (25) and one side of each packing layer (26) for observing the working conditions of the demisting packing and the packing, the third manhole sight glass (32) is provided near the bottom of the alkali washing tower (2) for observing the absorption liquid; A second liquid inlet (33), the second liquid inlet (33) is evenly distributed on the side wall of the alkali washing tower (2), and the second liquid inlet (33) is arranged below the porous plate liquid holding layer (29); A second liquid outlet (34), the second liquid outlet (34) being opened on both sides of the second circulating water tank (27); A dosing port (35), the dosing port (35) being provided at the top of the second circulating water tank (27); A second water replenishment port (36), the second water replenishment port (36) being provided at the top of the second circulating water tank (27); A second sewage outlet (37), the second sewage outlet (37) being arranged on one side of the alkali washing tower (2) close to the bottom of the alkali washing tower (2), and the level of the second sewage outlet (37) being lower than the liquid outlet; A second overflow port (38), the second overflow port (38) being arranged on one side of the alkali washing tower (2), and the level of the second overflow port (38) being located below the second liquid inlet (33) and above a set absorption liquid level; a liquid level gauge port of the alkali washing tower (2), the liquid level gauge port of the alkali washing tower (2) being opened on one side of the alkali washing tower (2), and the horizontal height of the liquid level gauge port of the alkali washing tower (2) being respectively above the second overflow port (38) and below the second overflow port (38); A third inspection port (39) is provided on the side wall of the alkali washing tower (2) below the porous plate liquid holding layer (29).

8. The furnace exhaust gas treatment device according to claim 1, characterized in that: The wet electrostatic precipitator (3) is provided with: A dust collector air inlet (40), the dust collector air inlet (40) being arranged on one side of the wet electrostatic precipitator (3) near the bottom; A dust collector air outlet (41), wherein the dust collector air outlet (41) is located at the top of the wet electrostatic precipitator (3); An air distribution layer, the air distribution layer being arranged above the air inlet (40) of the dust collector and comprising a plurality of air distribution plates; An electrostatic adsorption layer is provided above the air distribution layer and is composed of an electrostatic adsorption cathode tube and an electrostatic adsorption anode tube; The backwash spray layer is arranged above the electrostatic adsorption layer.

9. The furnace exhaust gas treatment device according to claim 7, characterized in that: A transparent organic glass plate is installed in the manhole sight glass.

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