Acid tail gas treatment device

Abstract

The utility model relates to the technical field of tail gas treatment, in particular to an acid tail gas treatment device. The acid tail gas treatment device comprises a treatment mechanism, a containing mechanism, at least two spraying assemblies and a control unit. The treatment mechanism comprises a reaction cavity, a gas inlet and a gas outlet, the gas inlet and the gas outlet are communicated with the reaction cavity, the gas inlet is located below the gas outlet, and the gas inlet is used for enabling acidic tail gas to flow into the reaction cavity. The containing mechanism is used for containing chemical agents. The at least two groups of spraying assemblies are communicated with the reaction cavity and the accommodating mechanism, and the spraying assemblies are used for conveying the chemical agent in the accommodating mechanism into the reaction cavity and spraying the chemical agent. The control unit is electrically connected with the spraying assemblies and used for controlling the number of the working spraying assemblies. The control unit is arranged to control the working number of the spraying assemblies, the conveying amount of the chemical agents conveyed into the reaction cavity can be controlled, and therefore the situation that when the flow of the acid tail gas is small, a large number of chemical agents do not react with the acid tail gas and are wasted can be avoided.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas treatment technology, and in particular to an acidic exhaust gas treatment device. Background Technology

[0002] Acidic exhaust gases may contain sulfur dioxide (SO2) and nitrogen oxides (NOx). x Harmful gases such as hydrogen sulfide (H2S) emitted into the air can form acid rain or exacerbate smog. Treating acidic exhaust gases can reduce environmental pollution. The main purpose of acidic exhaust gas treatment is to transform harmful substances in the acidic waste gas into substances with less environmental impact through a series of chemical reactions, thereby purifying the exhaust gas. There are many ways to purify acidic exhaust gases, and multi-stage spraying is one of them. Specifically, multi-stage spraying involves chemical agents contacting the harmful substances in the acidic exhaust gas to react chemically, thereby removing the harmful components from the acidic exhaust gas.

[0003] In existing technologies, multi-stage spray treatment of acidic exhaust gas involves quantitative spraying, which can easily lead to a situation where a large amount of chemical reagents fail to react with the acidic exhaust gas, resulting in a significant waste of chemical reagents. Utility Model Content

[0004] This invention provides an acidic exhaust gas treatment device for controlling the flow rate of chemical agents delivered during multi-stage spray treatment of acidic exhaust gas, thereby reducing the waste of chemical agents.

[0005] This utility model provides an acidic exhaust gas treatment device, comprising:

[0006] The processing mechanism includes a reaction chamber, an air inlet, and an air outlet. The air inlet and the air outlet are both connected to the reaction chamber. The air inlet is located below the air outlet and is used to supply acidic exhaust gas into the reaction chamber.

[0007] A containment mechanism for containing chemical agents;

[0008] At least two sets of spray assemblies, each set connecting the reaction chamber to the receiving mechanism, wherein the spray assemblies are used to deliver and spray the chemical reagent from the receiving mechanism into the reaction chamber; and

[0009] A control unit is electrically connected to the spray assembly and is used to control the number of spray assemblies that are operating.

[0010] In some embodiments, a flow sensor is also included, which is disposed at the air inlet to monitor the flow rate of the acidic exhaust gas, and the flow sensor is electrically connected to the control unit, which controls the number of spray components operating based on the flow rate measured by the flow sensor.

[0011] In some embodiments, the spray assembly includes:

[0012] Pump body, which is electrically connected to the control unit;

[0013] A first pipe fitting, the first pipe fitting being connected to the inlet of the pump body and the receiving mechanism;

[0014] A second pipe fitting, one end of which is connected to the outlet of the pump body, and the other end which passes through the processing mechanism and extends into the reaction chamber; and

[0015] A spray nozzle is provided at one end of the second pipe that extends into the reaction chamber.

[0016] In some embodiments, the spray nozzles of the at least two sets of spray assemblies are arranged at intervals along the height direction.

[0017] In some embodiments, the spray nozzle is movably connected to the second pipe fitting, and the spray nozzle is configured to adjust the spray angle.

[0018] In some embodiments, there are multiple spray nozzles, which are spaced apart from each other along the extension direction of the second pipe.

[0019] In some embodiments, a pH sensor is provided at the bottom of the reaction chamber. The pH sensor is used to detect the pH value when the chemical agent falls to the bottom of the reaction chamber after reacting with the acidic exhaust gas. The pH sensor is electrically connected to the control unit, and the control unit controls the flow rate of the chemical agent delivered by the spray assembly based on the pH value measured by the pH sensor.

[0020] In some embodiments, there are multiple pH sensors, which are evenly arranged at the bottom of the reaction chamber formed by the processing mechanism, and each pH sensor is electrically connected to the control unit. The control unit controls the flow rate of the chemical agent delivered by the spray assembly based on the average pH value measured by the multiple pH sensors.

[0021] In some implementations, it also includes:

[0022] A stirring assembly, rotatably disposed within the receiving mechanism; and

[0023] A driving component is disposed in the receiving mechanism and connected to the stirring assembly to drive the stirring assembly to rotate.

[0024] In some embodiments, the stirring assembly includes:

[0025] A rotating shaft, which is connected to the driving component;

[0026] At least two stirring blades, each of which is sleeved on the rotating shaft, and the at least two stirring blades are spaced apart axially on the rotating shaft; and

[0027] A stirring frame is fitted onto the rotating shaft, and the stirring frame accommodates the stirring blades in an axial direction perpendicular to the rotating shaft.

[0028] This application provides an acidic exhaust gas treatment device, which has at least the following advantages compared with the prior art:

[0029] The control unit controls the number of spray components in operation, which in turn controls the amount of chemical reagents delivered to the reaction chamber. This prevents a large amount of chemical reagents from being wasted when the acidic exhaust gas flow rate is low. Attached Figure Description

[0030] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0031] Figure 1 This is a schematic diagram of the structure of the acidic tail gas treatment device provided in the embodiments of this application;

[0032] Figure 2 This is a schematic diagram of the structure of the spray assembly provided in the embodiments of this application;

[0033] Figure 3 This is a schematic diagram of the internal structure of the accommodating mechanism provided in the embodiments of this application.

[0034] Figure label:

[0035] 1-Acidic exhaust gas treatment device;

[0036] 11-Processing mechanism; 112-Air inlet; 113-Air outlet;

[0037] 12-Accommodation mechanism;

[0038] 13-Spray assembly; 131-Pump body; 132-First pipe fitting; 133-Second pipe fitting; 134-Spray nozzle;

[0039] 14-Control unit;

[0040] 15-Agitator assembly; 151-Rotating shaft; 152-Agitator blades; 153-Agitator frame;

[0041] 16-Drive components. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0043] In this application, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0044] Furthermore, the terms "first," "second," etc., are primarily used to distinguish different devices, components, or parts (which may be the same or different in specific type and construction), and are not intended to indicate or imply the relative importance or quantity of the indicated devices, components, or parts. Unless otherwise stated, "a plurality of" means two or more.

[0045] The technical solution of this application will be further described below with reference to specific embodiments and accompanying drawings.

[0046] This application provides an acidic exhaust gas treatment device 1, including a treatment mechanism 11, a containing mechanism 12, at least two sets of spray assemblies 13, and a control unit 14. The treatment mechanism 11 includes a reaction chamber (not shown), an inlet 112, and an outlet 113. Both the inlet 112 and the outlet 113 are connected to the reaction chamber. The inlet 112 is located below the outlet 113 and is used to allow acidic exhaust gas to flow into the reaction chamber. The containing mechanism 12 is used to contain chemical reagents. At least two sets of spray assemblies 13 are connected to both the reaction chamber and the containing mechanism 12. The spray assemblies 13 are used to transport the chemical reagents from the containing mechanism 12 into the reaction chamber and spray them. The control unit 14 is electrically connected to the spray assemblies 13 and is used to control the number of spray assemblies 13 operating.

[0047] Understandably, the acidic exhaust gas enters the reaction chamber through the inlet 112, comes into contact with and reacts with the chemical reagents to remove harmful components, transforming the acidic exhaust gas into a harmless ordinary gas, which is then discharged through the outlet 113. The spray assembly 13 transports the chemical reagents from the receiving mechanism 12 into the reaction chamber and sprays them, ensuring that the chemical reagents come into contact with the acidic exhaust gas within the reaction chamber. The spraying by the spray assembly 13 expands the spraying range of the chemical reagents, thereby increasing the contact area between the acidic exhaust gas and the chemical reagents, thus ensuring a sufficient reaction between them. Furthermore, by providing at least two sets of spray assemblies 13, multi-stage spraying can be formed, further expanding the contact area between the acidic exhaust gas and the chemical reagents, thereby further ensuring a sufficient reaction between the acidic exhaust gas and the chemical reagents.

[0048] In this embodiment, the control unit 14 controls the number of times the spray assembly 13 operates, which can control the amount of chemical agent delivered to the reaction chamber. This can prevent a large amount of chemical agent from being wasted when the acidic exhaust gas flow rate is low.

[0049] For example, the number of spray components 13 is three. When there is a large amount of acidic exhaust gas in the reaction chamber, the control unit 14 can control all three spray components 13 to be in working state, increasing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber; when there is a large amount of acidic exhaust gas in the reaction chamber, the control unit 14 can control two of the spray components 13 to be in working state, and the other spray component 13 to be in a stopped state, reducing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber; when there is a small amount of acidic exhaust gas in the reaction chamber, the control unit 14 can control one of the spray components 13 to be in working state, and the other two spray components 13 to be in a stopped state, further reducing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber.

[0050] In some embodiments, the acidic exhaust gas treatment device 1 further includes a flow sensor (not shown in the figure). The flow sensor is disposed at the air inlet 112 to monitor the flow rate of the acidic exhaust gas, and the flow sensor is electrically connected to the control unit 14. The control unit 14 controls the number of spray components 13 operating based on the flow rate measured by the flow sensor. In this embodiment, the control unit 14 controls the number of spray components 13 operating based on the flow rate of the acidic exhaust gas flowing into the reaction chamber through the air inlet 112 monitored by the flow sensor, thereby controlling the amount of chemical reagent delivered to the reaction chamber.

[0051] For example, the number of spray components 13 is three. When the flow sensor detects that the flow rate of the acidic exhaust gas is extremely high, the control unit 14 can control all three spray components 13 to be in working state, increasing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber; when the flow sensor detects that the flow rate of the acidic exhaust gas is relatively high, the control unit 14 can control two of the spray components 13 to be in working state, and the other spray component 13 to be in a stopped state, reducing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber; when the flow sensor detects that the flow rate of the acidic exhaust gas is relatively low, the control unit 14 can control one of the spray components 13 to be in working state, and the other two spray components 13 to be in a stopped state, further reducing the amount of chemical agent delivered from the containing mechanism 12 to the reaction chamber.

[0052] In some embodiments, the spray assembly 13 includes a pump body 131, a first pipe 132, a second pipe 133, and a spray nozzle 134. The pump body 131 is electrically connected to the control unit 14. The first pipe 132 connects the inlet of the pump body 131 to the receiving mechanism 12. One end of the second pipe 133 is connected to the outlet of the pump body 131, and the other end passes through the processing mechanism 11 and extends into the reaction chamber. The spray nozzle 134 is located at the end of the second pipe 133 that extends into the reaction chamber.

[0053] When the pump body 131 is working, it drives the chemical agent in the receiving mechanism 12 to flow sequentially through the first pipe 132 and the second pipe 133 and spray it through the spray nozzle 134, so that the chemical agent comes into contact with the acidic tail gas in the reaction chamber for reaction.

[0054] In some embodiments, the spray nozzles 134 of at least two sets of spray assemblies 13 are arranged at intervals along the height direction.

[0055] It should be noted that the height of the spray nozzles 134 of all spray components 13 is higher than the height of the air inlet 112 and lower than the height of the air outlet 113.

[0056] For example, there are three sets of spray components 13. The spray nozzles 134 of the three sets of spray components 13 are arranged at intervals along the height direction. That is, the distance between the spray nozzle 134 of the first set of spray components 13 and the bottom of the reaction chamber is less than the distance between the spray nozzle 134 of the second set of spray components 13 and the bottom of the reaction chamber, and the distance between the spray nozzle 134 of the second set of spray components 13 and the bottom of the reaction chamber is less than the distance between the spray nozzle 134 of the third set of spray components 13 and the bottom of the reaction chamber, so that three-stage spraying can be formed and the acidic exhaust gas can be treated three times.

[0057] When the acidic exhaust gas enters the reaction chamber through the inlet 112, it rises and first comes into contact with and reacts with the chemical agent sprayed by the spray nozzle 134 of the first set of spray components 13, thus performing a primary treatment on the acidic exhaust gas. The acidic exhaust gas continues to rise and comes into contact with and reacts with the chemical agent sprayed by the spray nozzle 134 of the second set of spray components 13, thus performing a secondary treatment on the acidic exhaust gas. The acidic exhaust gas continues to rise and comes into contact with and reacts with the chemical agent sprayed by the spray nozzle 134 of the third set of spray components 13, thus performing a tertiary treatment on the acidic exhaust gas. After the three treatments, the acidic exhaust gas becomes ordinary gas and continues to rise to the outlet 113 for discharge.

[0058] Therefore, setting at least two sets of spray components 13 can treat the acidic exhaust gas at least twice, thereby ensuring that the acidic exhaust gas can fully react with the chemical agents.

[0059] In some embodiments, the spray nozzle 134 is movably connected to the second pipe fitting 133, and the spray nozzle 134 is configured to adjust the spray angle.

[0060] It is understandable that there may be installation errors during the installation process, which may cause the actual spray angle of the spray nozzle 134 after installation to be different from the spray angle designed. In this embodiment, the error can be eliminated by adjusting the spray angle of the spray nozzle 134, so as to ensure that the spray angle of the spray nozzle 134 can eliminate the influence of installation errors and ensure the spraying effect.

[0061] In some embodiments, there are multiple spray nozzles 134, which are spaced apart from each other along the extension direction of the second pipe 133.

[0062] In this embodiment, multiple spray nozzles 134 can form cross sprays, thereby eliminating spray dead zones and ensuring that the acidic exhaust gas can fully react with the chemical agents.

[0063] In some embodiments, a pH sensor (not shown in the figure) is provided at the bottom of the reaction chamber. The pH sensor is used to detect the pH value when the chemical agent falls to the bottom of the reaction chamber after reacting with the acidic exhaust gas. The pH sensor is electrically connected to the control unit 14. The control unit 14 controls the flow rate of the chemical agent delivered by the spray assembly 13 according to the pH value measured by the pH sensor.

[0064] For example, when the pH value measured by the pH sensor is higher than the preset pH value, the control unit 14 can reduce the opening of the pump body 131 of the spray assembly 13, thereby reducing the flow rate of the chemical agent delivered by the spray assembly 13, that is, reducing the flow rate of the sprayed chemical agent, thereby reducing the waste of chemical agent.

[0065] In some embodiments, there are multiple pH sensors, which are evenly arranged at the bottom of the reaction chamber formed by the processing mechanism 11. All pH sensors are electrically connected to the control unit 14. The control unit 14 controls the flow rate of the chemical agent delivered by the spray assembly 13 based on the average pH value measured by the multiple pH sensors.

[0066] In this embodiment, multiple pH sensors are uniformly arranged at the bottom of the reaction chamber formed by the processing mechanism 11. The flow rate of the chemical agent delivered by the spray assembly 13 is determined by averaging the pH values ​​measured by the multiple pH sensors, which ensures the accuracy of the measurement results.

[0067] In some embodiments, the acidic exhaust gas treatment device 1 further includes a stirring assembly and a drive member 16. The stirring assembly is rotatably disposed within the receiving mechanism 12, and the drive member 16 is disposed within the receiving mechanism 12 and connected to the stirring assembly to drive the stirring assembly to rotate.

[0068] It is understandable that the chemical agent can be made by dissolving chemicals in water. Precipitation of the chemicals in the containing mechanism 12 may occur, leading to a decrease in the concentration of the chemicals and thus affecting the spraying effect. To solve this problem, in this embodiment, a stirring assembly is provided inside the containing mechanism 12. The driving component 16 drives the stirring assembly to rotate, thereby stirring the chemical agent and ensuring the concentration of the chemicals, thus guaranteeing the spraying effect.

[0069] In some embodiments, the stirring assembly includes a rotating shaft 151, at least two stirring blades 152, and a stirring frame 153. The rotating shaft 151 is connected to a drive member 16, and the at least two stirring blades 152 are all sleeved on the rotating shaft 151, with the at least two stirring blades 152 spaced apart in the axial direction of the rotating shaft 151. The stirring frame 153 is sleeved on the rotating shaft 151, and the stirring frame 153 accommodates the stirring blades 152 in an axial direction perpendicular to the rotating shaft 151.

[0070] The stirring blade 152 can stir the chemical agent near the rotating shaft 151, and the stirring frame 153 can stir the chemical agent away from the rotating shaft 151. Through the cooperation of the stirring blade 152 and the stirring frame 153, the chemical agent in the containing mechanism 12 can be stirred to ensure the concentration of the chemical agent and thus ensure the spraying effect.

[0071] Although the present invention has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of the invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An acidic exhaust gas treatment device, characterized in that, include: The processing mechanism includes a reaction chamber, an air inlet, and an air outlet. The air inlet and the air outlet are both connected to the reaction chamber. The air inlet is located below the air outlet and is used to supply acidic exhaust gas into the reaction chamber. A containment mechanism for containing chemical agents; At least two sets of spraying assemblies, each set of spraying assemblies being connected to the reaction chamber and the receiving mechanism, wherein the spraying assemblies are used to transport the chemical agent in the receiving mechanism to the reaction chamber and spray it; as well as A control unit is electrically connected to the spray assembly and is used to control the number of spray assemblies that are operating.

2. The acidic tail gas treatment device according to claim 1, characterized in that, It also includes a flow sensor, which is disposed at the air inlet to monitor the flow rate of the acidic exhaust gas, and the flow sensor is electrically connected to the control unit. The control unit controls the number of spray components to operate based on the flow rate measured by the flow sensor.

3. The acidic tail gas treatment device according to claim 1, characterized in that, The spray assembly includes: Pump body, which is electrically connected to the control unit; A first pipe fitting, the first pipe fitting being connected to the inlet of the pump body and the receiving mechanism; A second pipe fitting, one end of which is connected to the outlet of the pump body, and the other end which passes through the processing mechanism and extends into the reaction chamber; and A spray nozzle is provided at one end of the second pipe that extends into the reaction chamber.

4. The acidic tail gas treatment device according to claim 3, characterized in that, The spray nozzles of the at least two sets of spray assemblies are arranged at intervals along the height direction.

5. The acidic tail gas treatment device according to claim 3, characterized in that, The spray nozzle is movably connected to the second pipe fitting, and the spray nozzle is configured to adjust the spray angle.

6. The acidic tail gas treatment device according to claim 3, characterized in that, The number of spray nozzles is multiple, and the multiple spray nozzles are arranged at intervals with each other along the extension direction of the second pipe.

7. The acidic tail gas treatment apparatus according to any one of claims 1-6, characterized in that, A pH sensor is installed at the bottom of the reaction chamber. The pH sensor is used to detect the pH value when the chemical agent falls to the bottom of the reaction chamber after reacting with the acidic exhaust gas. The pH sensor is electrically connected to the control unit. The control unit controls the flow rate of the chemical agent delivered by the spray assembly based on the pH value measured by the pH sensor.

8. The acidic tail gas treatment device according to claim 7, characterized in that, The number of pH sensors is multiple, and the multiple pH sensors are evenly arranged at the bottom of the reaction chamber formed by the processing mechanism. The multiple pH sensors are all electrically connected to the control unit. The control unit controls the flow rate of the chemical agent delivered by the spray assembly based on the average pH value measured by the multiple pH sensors.

9. The acidic tail gas treatment device according to any one of claims 1-6, characterized in that, Also includes: A stirring assembly, which is rotatably disposed within the receiving mechanism; as well as A driving component is disposed in the receiving mechanism and connected to the stirring assembly to drive the stirring assembly to rotate.

10. The acidic tail gas treatment device according to claim 9, characterized in that, The stirring assembly includes: A rotating shaft, which is connected to the driving component; At least two stirring blades, each of which is sleeved on the rotating shaft, and the at least two stirring blades are spaced apart axially on the rotating shaft; and A stirring frame is fitted onto the rotating shaft, and the stirring frame accommodates the stirring blades in an axial direction perpendicular to the rotating shaft.

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