Spray tower

Abstract

The utility model relates to the technical field of tail gas treatment, and discloses a spray tower, which comprises a tower body, a demisting component and a spray component, the top of the tower body is provided with a gas outlet, the side wall of the tower body is connected with a gas inlet pipe communicated with the interior of the tower body, the gas inlet pipe comprises an inclined tail section positioned in the tower body, and the inclined tail section gradually inclines downwards along the gas inlet direction; the demisting assembly is arranged in the tower body and is positioned above the inclined tail section; the spraying assembly comprises a first spraying unit and at least one second spraying unit which are sequentially arranged in the tower body at intervals from top to bottom, the demisting assembly is located between the first spraying unit and the second spraying unit, the first spraying unit is used for spraying and cleaning the demisting assembly, and the second spraying unit is used for spraying and dedusting tail gas. Compared with a traditional spray tower, the technical scheme of the embodiment has better dust removal effect and demisting effect, and can prevent discharged gas from flowing into the atmosphere with water mist.

Description

Technical Field

[0001] The utility model relates to the technical field of tail gas treatment, in particular to a spray tower. Background Art

[0002] In the process of industrial production, some industrial tail gases are usually generated. Especially in the food and chemical industries, these tail gases contain various organic components, have certain corrosiveness and are accompanied by a certain amount of slag-containing evaporation gas, and need to be treated through multiple processes before being discharged into the atmosphere.

[0003] For the treatment of such tail gases, the spray tower is usually used for dust removal by spraying, that is: the tail gas to be treated is introduced into the spray tower, and the spray mechanism and the packing layer provided in the tower are used to treat the tail gas. However, in the current spray tower during the spraying process, a small amount of fine starch particles are still difficult to capture, and a small amount of water is accompanied to form water mist and discharged into the atmosphere, resulting in environmental pollution and harm to human health. Summary of the Utility Model

[0004] In order to solve the above technical problems, the utility model provides a spray tower to solve the problems that the existing spray tower has poor dust removal effect and the discharged gas is easy to entrain water mist.

[0005] The embodiment of the present application provides a spray tower, including:

[0006] A tower body, an air outlet is provided at the top of the tower body, a gas inlet pipe connected to the inside of the tower body is connected to the side wall of the tower body, the gas inlet pipe includes an inclined end section located inside the tower body, and the inclined end section gradually inclines downward along the gas inlet direction;

[0007] A demisting component, which is arranged inside the tower body and above the inclined end section;

[0008] A spraying component, which includes a first spraying unit and a second spraying unit that are sequentially arranged at intervals from top to bottom inside the tower body, the demisting component is located between the first spraying unit and the second spraying unit, the first spraying unit is used for spraying and cleaning the demisting component, and the second spraying unit is used for spraying and dust removal of the tail gas.

[0009] In an embodiment, the demisting component includes a packing demisting layer and a plurality of demisting parts distributed along the horizontal direction of the tower body, and the demisting parts are located between the packing demisting layer and the first spraying unit.

[0010] In one embodiment, the demisting member includes a first folding plate, a second folding plate and a non-woven fabric. The first folding plate and the second folding plate are sequentially arranged at intervals from bottom to top, and an installation cavity is defined between the first folding plate and the second folding plate. The non-woven fabric is installed in the installation cavity, and the first folding plate and the second folding plate are both provided with through holes so that gas can pass through the non-woven fabric through the through holes.

[0011] In one embodiment, an included angle is formed between the inclined end section and the vertical axis of the tower body, and the included angle is between 40° and 50°.

[0012] In one embodiment, the spraying assembly further includes a main pipeline, a circulation pump and a first control valve arranged outside the tower body. A liquid outlet communicating with the inside of the tower body is provided on the side wall of the tower body, and the liquid outlet is located below the air inlet pipe. One end of the main pipeline is connected to the liquid outlet, the other end of the main pipeline is connected to the first spraying unit through a first branch pipeline, the second spraying unit is connected to the main pipeline through a second branch pipeline, and the circulation pump and the first control valve are arranged on the main pipeline.

[0013] In one embodiment, the spray tower further includes a controller, a pressure pipe and a differential pressure gauge. One end of the pressure pipe is connected to the air inlet pipe, the other end of the pressure pipe is connected to the top of the tower body, the differential pressure gauge is arranged on the pressure pipe for monitoring the pressure difference between the air inlet pipe and the air outlet, and the differential pressure gauge is connected to the controller. A first cut-off valve electrically connected to the controller is arranged on the first branch pipeline;

[0014] Wherein, when the differential pressure gauge monitors that the pressure difference between the air inlet pipe and the inside of the tower body is greater than a preset value, the controller controls the first cut-off valve to open so that the first spraying unit sprays and cleans the demisting assembly.

[0015] In one embodiment, a second cut-off valve is arranged on the second branch pipeline, and the second cut-off valve is electrically connected to the controller.

[0016] In one embodiment, the spray tower further includes a liquid supplementing assembly, and the liquid supplementing assembly is communicated with the inside of the tower body for supplementing the liquid required for spraying into the tower body.

[0017] In one embodiment, the liquid replenishing assembly includes a liquid replenishing pipe, a third cut-off valve, and a remote liquid level gauge for detecting the lowest liquid level and the highest liquid level. One end of the liquid replenishing pipe is connected to the inside of the tower body, and the other end of the liquid replenishing pipe is used to connect to an external water source. The third cut-off valve is arranged on the liquid replenishing pipe to control the on-off of the liquid replenishing pipe. The remote liquid level gauge is installed on the tower body and is in communication with the inside of the tower body, and the remote liquid level gauge is electrically connected to the controller.

[0018] In one embodiment, the spray tower further includes a drain pipe and a waste liquid tank. One end of the drain pipe is connected to the inside of the tower body, the other end of the drain pipe is connected to the waste liquid tank, and a second control valve for controlling the on-off of the drain pipe is further arranged on the drain pipe.

[0019] The beneficial effects of the above technical solution provided by the embodiments of the present application compared with the prior art are as follows:

[0020] The tail gas is introduced into the inside of the tower body through the intake pipe, and under the action of the inclined end section, the tail gas can blow towards the liquid surface at an inclined angle to form a water film and pre-adsorb some dust particles in advance. Then, in cooperation with at least one second spray unit arranged inside the tower body to spray and dust-remove the tail gas step by step, the dust particles are brought down by the sprayed liquid and fall into the tower body. After that, the mist is removed through the demisting assembly to remove the mist accompanying in the gas. Compared with the traditional spray tower, it has better dust-removing effect and demisting effect, and can prevent the discharged gas from carrying water mist and flowing out into the atmosphere. In addition, spraying and cleaning the demisting assembly with the first spray unit can avoid the problem that the demisting effect of the demisting assembly decreases due to excessive adsorbed particulate matter, ensuring that the demisting effect of the demisting assembly remains optimal. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of a spray tower of the present application;

[0022] Figure 2 is a schematic structural diagram of a demisting part in a spray tower of the present application.

[0023] Reference numerals in the drawings:

[0024] 10. Tower body; 10a. Air outlet; 20. Inlet pipe; 21. Tilted end section; 30. Demisting assembly; 31. Demisting element; 311. First folding plate; 312. Second folding plate; 313. Non-woven fabric; 32. Packing demisting layer; 40. Spraying assembly; 41. First spraying unit; 42. Second spraying unit; 43. Main pipeline; 44. Circulation pump; 45. First branch pipeline; 46. Second branch pipeline; 47. First control valve; 48. First cut-off valve; 49. Second cut-off valve; 50. Pneumatic pipe; 60. Differential pressure gauge; 70. Pressure gauge; 80. Liquid supplement assembly; 81. Liquid supplement pipe; 82. Third cut-off valve; 83. Remote liquid level gauge; 90. Drain pipe; 100. Waste liquid tank; 110. Second control valve; b. Included angle. Detailed implementation manners

[0025] In order to have a clearer understanding of the technical features, objectives, and effects of the present utility model, the detailed implementation manners of the present utility model will now be described in detail with reference to the accompanying drawings. In the following description, it should be understood that the orientation or positional relationships indicated by "front", "rear", "upper", "lower", "left", "right", "longitudinal", "transverse", "vertical", "horizontal", "top", "bottom", "inner", "outer", "head", "tail", etc. are based on the orientation or positional relationships shown in the accompanying drawings and are constructed and operated in a specific orientation, and are only for the convenience of describing the present technical solution, rather than indicating that the indicated devices or elements must have a specific orientation. Therefore, it should not be construed as a limitation to the present utility model.

[0026] The following will further describe in detail the detailed implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments. The following embodiments are used to illustrate the present utility model but are not used to limit the scope of the present utility model.

[0027] Figure 1 The structure diagram of a spray tower of the present application is shown. As Figure 1 shown, the embodiment of the present application provides a spray tower, which includes a tower body 10, a demisting assembly 30, and a spraying assembly 40.

[0028] Specifically, an air outlet 10a is provided at the top of the tower body 10, and an inlet pipe 20 communicating with the inside of the tower body 10 is connected to the side wall of the tower body 10. The inlet pipe 20 includes a tilted end section 21 located inside the tower body, and the tilted end section 21 gradually slopes downward along the air inlet direction. The demisting assembly 30 is disposed inside the tower body 10 and above the tilted end section 21. The spraying assembly 40 includes a first spraying unit 41 and a second spraying unit 42 that are sequentially spaced from top to bottom inside the tower body 10. The demisting assembly 30 is located between the first spraying unit 41 and the second spraying unit 42. The first spraying unit 41 is used to spray and clean the demisting assembly 30, and the second spraying unit 42 is used to spray and remove dust from the tail gas.

[0029] Exemplarily, the intake pipe 20 is used to introduce the tail gas to be treated into the tower body 10. After being treated by the spraying assembly 40 and the demisting assembly 30, it flows out to the atmosphere from the air outlet 10a. It should be noted that since the tail gas to be treated continuously enters the interior of the tower body 10 from the intake pipe 20, the gas inside the tower body 10 will accelerate from the bottom to the top of the tower body 10. In this regard, in this embodiment, the air outlet 10a is opened at the top of the tower body 10, and the intake pipe 20 is connected to the side wall of the lower part of the tower body 10, which can ensure that the tail gas can pass through the spraying assembly 40 and the demisting assembly 30 in sequence for treatment, and finally flow out to the atmosphere from the air outlet 10a at the top. Compared with setting the air outlet 10a on the side of the tower body 10, it can accelerate the discharge of the tail gas and is beneficial to improving the treatment efficiency.

[0030] Exemplarily, the part of the intake pipe 20 extending into the tower body 10 is set as the inclined end section 21 in order to change the flow direction of the tail gas entering the tower body 10, so that the tail gas can blow towards the liquid surface at an inclined angle, thereby forming a water film to pre-adsorb part of the dust, which is beneficial to improving the dust removal effect.

[0031] Exemplarily, the first spraying unit 41 is only used to spray and clean the demisting assembly 30. During the process of treating the tail gas, the first spraying unit 41 does not spray and remove dust from the tail gas. Only after reaching the trigger condition (for example, the demisting effect of the demisting assembly 30 decreases), the first spraying unit 41 will be turned on to clean the demisting assembly 30, which can ensure that the demisting effect of the demisting assembly 30 can be maintained at the best, and at the same time, it can also reduce the consumption of liquid. The second spraying unit 42 is used to spray and remove dust from the tail gas flowing from the bottom to the top, so that the dust particles contained in the tail gas can be adsorbed by the spraying liquid and fall into the tower body 10.

[0032] It should be noted that the second spraying units 42 can be arranged at intervals in multiple numbers, which specifically depends on the actual situation. However, in this embodiment, two second spraying units 42 are provided, so that after the tail gas entering the tower body 10 passes through the primary spraying and secondary spraying of the two second spraying units 42 in sequence, most of the dust particles can be removed.

[0033] Among them, both the first spraying unit 41 and the second spraying unit 42 can be formed by connecting multiple spraying pipes. The spraying pipes are arranged inside the tower body 10, and a plurality of nozzles for spraying are opened on the spraying pipes. The above is only an example, but not limited to this.

[0034] Exemplarily, the demisting assembly 30 is used to demist the gas to remove the fog accompanying the gas, prevent the discharged gas from entraining water mist and flowing out to the atmosphere, and at the same time, the demisting assembly 30 can also adsorb fine starch particles to improve the dust removal effect.

[0035] The spray tower based on the above technical features uses the intake pipe 20 to introduce the tail gas into the interior of the tower body 10. Under the action of the inclined end section 21, the tail gas can blow towards the liquid surface at an inclined angle to form a water film and pre-adsorb some dust particles in advance. Then, in cooperation with at least one second spray unit 42 arranged inside the tower body 10, the tail gas is spray-dusted step by step, so that the dust particles are carried down by the sprayed liquid and fall into the tower body 10. After that, the demisting component 30 is used for demisting to remove the mist accompanying in the gas. Compared with the traditional spray tower, it has better dust removal effect and demisting effect, and can prevent the discharged gas from carrying water mist and flowing out into the atmosphere. In addition, the first spray unit 41 is used to spray and clean the demisting component 30, which can avoid the problem that the demisting effect of the demisting component 30 decreases due to excessive adsorbed particulate matter, and ensures that the demisting effect of the demisting component 30 remains optimal.

[0036] In one embodiment, the demisting component 30 includes a packing demisting layer 32 and a plurality of demisting elements 31 distributed along the horizontal axis direction of the tower body 10. The demisting elements 31 are located between the packing demisting layer 32 and the first spray unit 41.

[0037] Here, it should be noted that the above-mentioned "horizontal direction" is a virtual setting for facilitating the description of the positional relationship of the inclined end section, and specifically can refer to Figure 1 the x-ray in

[0038] Exemplarily, the gas processed by the second spray unit 42 continues to flow towards the air outlet 10a, so that the gas will first collide with the packing demisting layer 32 at a high speed, slow down and intercept the water mist, forming water droplets and dripping into the tower body 10. After that, the gas continues to flow and collide with the demisting elements 31, so that a small amount of particulate matter and water mist in the gas are adsorbed by the demisting elements 31, thereby achieving the purpose of adsorbing fine particles and demisting, reducing the water mist carried in the gas and flowing out into the atmosphere, and being beneficial to improving the dust removal and demisting effects.

[0039] Figure 2 The structural schematic diagram of the demisting element 31 in a spray tower of the present application is shown. In one embodiment, each demisting element 31 includes a first folding plate 311, a second folding plate 312 and a non-woven fabric 313. The first folding plate 311 and the second folding plate 312 are arranged at intervals in sequence from bottom to top, and an installation cavity is defined between the first folding plate 311 and the second folding plate 312. The non-woven fabric 313 is installed in the installation cavity, and both the first folding plate 311 and the second folding plate 312 are provided with through holes, so that the gas can pass through the non-woven fabric 313 through the through holes.

[0040] Exemplarily, an installation cavity is formed between the first folding plate 311 and the second folding plate 312, and then the non-woven fabric 313 is installed in the installation cavity to assemble the demisting member 31. The structure is simple, which facilitates the subsequent quick replacement of the non-woven fabric 313. It should be noted that through holes are formed in the first folding plate 311 and the second folding plate 312 to allow gas to pass through the non-woven fabric 313, that is, when the gas passes through the packing demisting layer 32, it passes through the non-woven fabric 313 from the through holes, so that under the damping and adsorption effects of the non-woven fabric 313, a small amount of particulate matter and water mist in the gas are adsorbed.

[0041] In an embodiment, an included angle is formed between the inclined end segment 21 and the vertical axis of the tower body 10, and the included angle b is between 40° and 50°. Exemplarily, setting the included angle b between 40° and 50° is to allow the tail gas to blow obliquely towards the liquid surface inside the tower body 10 to form a water film and pre-adsorb part of the dust, which is beneficial to improving the dust removal effect. In this embodiment, the included angle is preferably 45° to ensure the best adsorption effect.

[0042] It should be noted that the above-mentioned "vertical axis" is a virtual one for facilitating the description of the inclination angle of the inclined end segment, and specifically, reference can be made to Figure 1 the Y line in

[0043] In an embodiment, the spraying assembly 40 further includes a main pipeline 43, a circulation pump 44 and a first control valve 47 provided outside the tower body. A liquid outlet communicating with the inside of the tower body 10 is provided on the side wall of the tower body 10, and the liquid outlet is located below the air inlet pipe 20. One end of the main pipeline 43 is connected to the liquid outlet, and the other end of the main pipeline 43 is connected to the first spraying unit 41 through a first branch pipeline 45. The second spraying unit 42 is connected to the main pipeline 43 through a second branch pipeline 46. The circulation pump 44 and the first control valve 47 are provided on the main pipeline 43.

[0044] Exemplarily, the main pipeline 43 is used to communicate with the inside of the tower body 10, and the first spraying unit 41 and the second spraying unit 42 are respectively connected through the first branch pipeline 45 and the second branch pipeline 46. Then, under the action of the circulation pump 44, the liquid in the tower body 10 is pumped to the first spraying unit 41 or the second spraying unit 42 for spraying. Since both the first spraying unit 41 and the second spraying unit 42 are provided inside the tower body 10, the sprayed liquid falls back into the tower body 10, thus realizing the recycling of the liquid.

[0045] In one embodiment, the spray tower further includes a controller, a pneumatic tube 50, and a differential pressure gauge 60. One end of the pneumatic tube 50 is connected to the intake pipe 20, and the other end of the pneumatic tube 50 is connected to the top of the tower body 10. The differential pressure gauge 60 is disposed on the pneumatic tube 50 for monitoring the pressure difference between the intake pipe 20 and the air outlet 10a of the tower body 10, and the differential pressure gauge 60 is connected to the controller. A first cut-off valve 48 electrically connected to the controller is provided on the first pipeline 45. Wherein, when the differential pressure gauge 60 monitors that the pressure difference between the intake pipe 20 and the air outlet 10a is greater than a preset value, the controller controls the first cut-off valve 48 to open, so that the first spray unit 41 sprays and cleans the demisting component 30.

[0046] Exemplarily, the two ends of the pneumatic tube 50 are respectively connected to the intake pipe 20 and the top of the tower body 10, and a differential pressure gauge 60 is provided on the pneumatic tube 50 so as to be able to monitor the pressure difference between the intake pipe 20 and the air outlet 10a and transmit the monitored data into the controller. The controller makes a judgment on whether to control the first cut-off valve 48 to open, thereby realizing the automatic spraying of the first spray unit 41 on the demisting component 30 as needed without manual control.

[0047] It should be noted that the "pressure difference" mentioned above refers to the difference between the pressure at the intake pipe 20 and the pressure at the air outlet 10a, and the "preset value" is a value preset on the controller, which specifically depends on the demisting effect of the demisting element 31. For example: the preset value is set at 0.1 - 0.15 Mpa, the pressure at the intake pipe 20 is 0.8 Mpa, and the pressure at the air outlet 10a is 0.6 Mpa. At this time, the pressure difference between the intake pipe 20 and the air outlet 10a is 0.2 Mpa, which is greater than the preset value of the above-mentioned pressure difference, indicating that the air output at the air outlet 10a decreases. The decrease in the air output is due to excessive fine particles adsorbed by the non-woven fabric 313 in the demisting element 31, resulting in a decrease in the air permeability of the non-woven fabric 313. In this state, the adsorption effect of the non-woven fabric 313 on the subsequent gas decreases, and the demisting effect is not good. Therefore, the controller will control the first cut-off valve 48 to open according to the obtained pressure difference, so that the first pipeline 45 is in a conducting state, and then the liquid on the main pipeline 43 leads to the first spray unit 41, so as to use the first spray unit 41 to spray and clean the demisting component 30, so that the particles adsorbed by the non-woven fabric 313 are washed down into the tower body 10, ensuring that the demisting element 31 always maintains the best demisting effect.

[0048] In one embodiment, a second shut-off valve 49 is provided on the second branch pipeline 46, and the second shut-off valve 49 is electrically connected to the controller. In this way, by providing the second shut-off valve 49 on the second branch pipeline 46, the on-off of the second shut-off valve 49 can be controlled to select single-layer spraying or multi-layer spraying, so as to meet the dust removal requirements for different tail gases. For example, when only one-stage spraying is required to achieve the dust removal effect, only one of the second shut-off valves 49 provided on the second branch pipeline 46 needs to be controlled to open, and the second shut-off valves 49 on the remaining second branch pipelines 46 are closed; when multi-layer spraying is required to achieve the dust removal effect, only the corresponding second shut-off valve 49 needs to be opened to realize multi-layer spraying of the tail gas.

[0049] It should be noted that the first shut-off valve 48 and the second shut-off valve 49 in this embodiment can both adopt pneumatic shut-off valves, or other types of shut-off valves in the prior art, and there is no limitation in this regard.

[0050] In one embodiment, a pressure gauge 70 is further included. The pressure gauge 70 is connected to the main pipeline 43 and is used to monitor the water pressure of the main pipeline 43. In this way, the liquid pressure on the main pipeline 43 can be monitored through the pressure gauge 70, which is convenient for workers to understand the working state at all times.

[0051] In one embodiment, the spray tower further includes a liquid replenishing assembly 80. The liquid replenishing assembly 80 includes a liquid replenishing pipe 81, a third shut-off valve 82, and a remote level gauge 83 for detecting the lowest liquid level and the highest liquid level. One end of the liquid replenishing pipe 81 is connected to the inside of the tower body 10, and the other end of the liquid replenishing pipe 81 is used to connect to an external water source. The third shut-off valve 82 is provided on the liquid replenishing pipe and is used to control the on-off of the liquid replenishing pipe 81. The remote level gauge 83 is installed on the tower body 10 and is connected to the inside of the tower body 10, and the remote level gauge 83 is electrically connected to the controller.

[0052] Among them, when the remote level gauge 83 detects the lowest liquid level signal, the controller controls the third shut-off valve 82 to open so that the liquid replenishing pipe leads to replenish liquid into the tower body 10; when the remote level gauge 83 detects the highest liquid level signal, the controller controls the third shut-off valve 82 to close so that the liquid replenishing pipe 81 is disconnected to stop replenishing liquid into the tower body 10.

[0053] Exemplarily, the remote liquid level gauge 83 is used to monitor the lowest liquid level and the highest liquid level inside the tower body 10, and has a remote transmission function, so that the detected signal can be transmitted to the controller, and then the controller controls the opening or closing of the third cut-off valve 82 according to the corresponding signal. For example: when the liquid level inside the tower body 10 is lower than the lowest liquid level, the remote liquid level gauge 83 detects the lowest liquid level signal, and the controller controls the third cut-off valve 82 to open, so that the external liquid enters the tower body 10 through the liquid replenishing pipe 81. When the liquid level rises to the highest liquid level, the remote liquid level gauge 83 detects the highest signal. At this time, the controller controls the third cut-off valve 82 to close, so that the liquid replenishing pipe 81 is disconnected and the liquid supply to the tower body 10 stops, realizing the automatic replenishment of the liquid.

[0054] In one embodiment, the spray tower further includes a drain pipe 90 and a waste liquid tank 100. One end of the drain pipe 90 is connected to the inside of the tower body 10, the other end of the drain pipe 90 is connected to the waste liquid tank 100, and a second control valve 110 for controlling the on-off of the drain pipe 90 is further provided on the drain pipe 90.

[0055] Exemplarily, since the liquid inside the tower body 10 is circulated to spray and dust-remove the tail gas, after circulating a certain number of times, more dust particles will be adsorbed in the liquid. Therefore, the second control valve 110 is opened to make the drain pipe 90 in a conducting state, so that the liquid inside the tower body 10 is discharged into the waste liquid tank 100 through the drain pipe 90, realizing the discharge of the waste liquid inside the tower body 10.

[0056] The working process of the present utility model is as follows:

[0057] When using the air inlet pipe 20 to introduce the tail gas to be treated into the tower body 10, the first control valve 47 and the second cut-off valve 49 are controlled to open. Under the action of the circulation pump 44, the liquid inside the tower body 10 flows through the main pipeline 43 to the second branch pipeline 46, and then from the second branch pipeline 46 to the second spray unit 42, so that the gas flowing to the air outlet 10a passes through multiple sprays in sequence, achieving the purpose of spray dust removal. After that, the sprayed gas passes through the packing demisting layer 32 and the demisting member 31 in sequence to remove the water mist, and finally flows out of the air outlet 10a into the atmosphere.

[0058] When the differential pressure gauge 60 detects that the pressure difference between the air inlet pipe 20 and the air outlet 10a is greater than the preset value, the controller controls the first cut-off valve 48 to open. Under the action of the circulation pump 44, the liquid inside the tower body 10 flows through the main pipeline 43 to the first branch pipeline 45, and then from the first branch pipeline to the first spray unit 41, so that the first spray unit 41 sprays and cleans the demisting member 31 and the packing demisting layer 32 to wash off the adsorbed particles and water mist into the tower body 10, ensuring the demisting effect of the demisting member 31 and the packing layer.

[0059] When the liquid level inside the tower body 10 is lower than the lowest liquid level, the remote liquid level gauge 83 detects the lowest liquid level signal, and then the controller controls the third cut-off valve 82 to open, so that the external liquid passes through the liquid supply pipe 81 into the tower body 10, causing the liquid level inside the tower body 10 to rise. When the liquid level rises to the highest liquid level, the remote liquid level gauge 83 detects the highest liquid level signal, and the controller controls the third cut-off valve 82 to disconnect, so that the liquid supply pipe 81 is disconnected, and the external liquid stops flowing into the tower body 10, realizing automatic liquid replenishment into the tower body 10.

[0060] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art of this technology, without departing from the technical principle of the present invention, several improvements and substitutions can be made, and these improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. A spray tower, characterized in that: include: A tower body, with an air outlet at the top, a side wall of the tower body connected to an air inlet pipe communicating with the interior of the tower body, the air inlet pipe comprising an inclined terminal section located inside the tower body, the inclined terminal section gradually inclining downward along the air inlet direction; A demisting assembly, which is arranged inside the tower body and above the inclined end section; A spray assembly, comprising a first spray unit and a second spray unit which are sequentially arranged inside the tower body from top to bottom, the demisting assembly is located between the first spray unit and the second spray unit, the first spray unit is used to spray and clean the demisting assembly, and the second spray unit is used to spray and remove dust from the exhaust gas; The defogger assembly includes a filler defogger layer and a plurality of defogger parts distributed in the horizontal direction of the tower body, wherein the defogger parts are located between the filler defogger layer and the first spray unit; wherein the defogger parts include a first folding plate, a second folding plate and a non-woven fabric, wherein the first folding plate and the second folding plate are sequentially spaced from bottom to top, and an installation cavity is defined between the first folding plate and the second folding plate, the non-woven fabric is installed in the installation cavity, and the first folding plate and the second folding plate are both provided with through holes so that gas can pass through the non-woven fabric through the through holes.

2. The spray tower according to claim 1, characterized in that: An included angle is formed between the inclined end section and the vertical axis of the tower body, and the included angle is between 40° and 50°.

3. The spray tower according to claim 1, characterized in that: The spray assembly also includes a main pipeline, a circulation pump and a first control valve arranged outside the tower body. The side wall of the tower body is provided with a liquid outlet connected to the inside of the tower body, and the liquid outlet is located below the air inlet pipe. One end of the main pipeline is connected to the liquid outlet, and the other end of the main pipeline is connected to the first spray unit through a first branch pipeline. The second spray unit is connected to the main pipeline through a second branch pipeline. The circulation pump and the first control valve are arranged on the main pipeline.

4. The spray tower according to claim 3, characterized in that: The spray tower also includes a controller, an air pressure pipe and a differential pressure gauge, one end of the air pressure pipe is connected to the air inlet pipe, and the other end of the air pressure pipe is connected to the top of the tower body, the differential pressure gauge is arranged on the air pressure pipe, and is used to monitor the pressure difference between the air inlet pipe and the air outlet, and the differential pressure gauge is connected to the controller, and the first branch pipeline is provided with a first cut-off valve electrically connected to the controller; When the differential pressure gauge detects that the pressure difference between the air inlet pipe and the inside of the tower body is greater than a preset value, the controller controls the first shut-off valve to open so that the first spray unit sprays and cleans the defogger assembly.

5. The spray tower according to claim 4, characterized in that: The second branch pipeline is provided with a second cut-off valve, and the second cut-off valve is electrically connected to the controller.

6. The spray tower according to claim 4, characterized in that: The spray tower also includes a liquid replenishing component, which is connected to the interior of the tower body and is used to replenish the liquid required for spraying into the interior of the tower body.

7. The spray tower according to claim 6, characterized in that: The refill assembly includes a refill tube, a third shut-off valve, and a remote liquid level gauge for detecting the lowest liquid level and the highest liquid level. One end of the refill tube is connected to the interior of the tower body, and the other end of the refill tube is used to connect to an external water source. The third shut-off valve is provided on the refill tube to control the on-off of the refill tube. The remote liquid level gauge is installed on the tower body and is connected to the interior of the tower body, and the remote liquid level gauge is electrically connected to the controller.

8. The spray tower according to claim 1, characterized in that: The spray tower also includes a drain pipe and a waste liquid tank. One end of the drain pipe is connected to the interior of the tower body, and the other end of the drain pipe is connected to the waste liquid tank. The drain pipe is also provided with a second control valve for controlling the on and off of the drain pipe.

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