A front-end treatment device for acid corrosion resistance test exhaust gas

Abstract

The utility model relates to experimental waste gas treatment technical field, is a kind of acid corrosion resistance test waste gas front-end treatment device, and the main part is divided into neutralizing liquid circulation layer, filler layer and discharge layer by first partition and second partition. The water tank is arranged at the bottom of neutralizing liquid circulation layer, vertical tank pump is arranged in the water tank, air inlet is arranged on the side wall of main body top, waste gas enters waste gas front-end treatment device through air inlet;Filler layer top is equipped with multiple spiral spray heads, spiral spray head connects spray pipe, neutralizing liquid in water tank is pressurized using vertical tank pump, and neutralizing liquid is sprayed in filler layer by spray pipe connecting spiral spray head, to neutralize waste gas;Axial fan is arranged in discharge layer, and air outlet is arranged on top, and waste gas after neutralization is discharged through air outlet under the action of suction force by axial fan.

Description

Technical Field

[0001] This utility model relates to the field of experimental waste gas treatment technology, and in particular to a front-end treatment device for acid corrosion resistant experimental waste gas. Background Technology

[0002] In laboratory testing settings, exhaust gas treatment is a crucial environmental protection task. Solution absorption, as a common exhaust gas treatment method, is widely used in various manufacturing enterprises. However, this method has revealed many problems in practical application, severely limiting the effectiveness and safety of exhaust gas treatment.

[0003] Laboratories generate exhaust gases of varying compositions during various testing experiments. When using solution absorption to treat these exhaust gases, backflow is more likely to occur due to the relatively small scale of laboratory equipment and the flexible and varied nature of experimental operations. During gas composition analysis experiments, exhaust gas emissions are unstable. When the pressure inside the testing apparatus drops suddenly, such as when switching gas sample collection or stopping a reaction step, the absorption solution can easily be drawn back into the reaction apparatus. This not only contaminates the test samples and reaction vessels, interfering with the accuracy of the test results and rendering previous experimental work useless, but it can also damage the upstream gas supply system. Once the gas path systems within these systems are contaminated by the solution, repair costs are high and repairs are difficult, severely impacting the normal progress of laboratory testing. Therefore, a front-end treatment device for experimental exhaust gases is needed. Summary of the Invention

[0004] To address the aforementioned technical problems, a front-end treatment device for acid corrosion resistant test exhaust gas is provided. This invention primarily utilizes a first and second partition to divide the main body into a neutralizing liquid circulation layer, a packing layer, and a discharge layer. A spiral nozzle evenly sprays the neutralizing liquid to react with the exhaust gas, treating the exhaust gas before discharge.

[0005] The technical means adopted in this utility model are as follows: A front-end treatment device for acid corrosion resistance test exhaust gas includes: a main body, which is divided into a neutral liquid circulation layer, a packing layer and an exhaust layer by a first partition and a second partition, wherein ventilation holes are provided on the first partition and the second partition; A water tank is provided at the bottom of the neutralizing liquid circulation layer. An in-tank vertical pump is provided in the water tank. An air inlet is provided on the main side wall above the water tank. Exhaust gas enters the exhaust gas front-end treatment device through the air inlet. The packing layer is filled with Raschig rings and multifaceted hollow spheres; multiple spiral nozzles are installed on the top of the packing layer, and the spiral nozzles are connected to spray pipes. The neutralizing liquid in the water tank is pressurized by a vertical pump in the tank and connected to the spiral nozzles through the spray pipes to achieve spraying of neutralizing liquid into the packing layer to neutralize the waste gas. An axial flow fan is installed inside the emission layer, and an air outlet is provided at the top. The neutralized waste gas is discharged through the air outlet under the suction force of the axial flow fan.

[0006] Furthermore, a water inlet is provided on the side wall of the water tank, a drain outlet is connected to the bottom of the water tank, and a ball valve is provided between the drain outlet and the water tank; the top of the water tank has an open structure.

[0007] Furthermore, the water tank is also equipped with a liquid level sensor to monitor the liquid level in the tank in real time. When the liquid level is lower than the preset value, neutralizing liquid is added through the water inlet.

[0008] Furthermore, a ball valve is installed on the spray pipe.

[0009] Furthermore, the neutralizing liquid sprayed by the spiral nozzle is in the form of a mist, which can evenly cover the internal space of the filler layer. The waste liquid generated by the reaction of exhaust gas and neutralizing liquid flows back to the water tank through the ventilation holes on the first partition.

[0010] Furthermore, viewing windows are provided on the side walls of the neutralizing liquid circulation layer, the packing layer, and the discharge layer for observing the internal conditions of the device.

[0011] Furthermore, the main body is made of PP board with acid corrosion resistance.

[0012] Compared with the prior art, the present invention has the following advantages: The front-end treatment device for acid corrosion resistance test exhaust gas provided by this utility model addresses the problem of exhaust gas treatment in laboratory testing. It innovates and optimizes the material, structure and function aspects, and has significant advantages in improving exhaust gas treatment efficiency, ensuring equipment safety and reducing labor costs, thus creating a safe and environmentally friendly working environment for the laboratory.

[0013] The acid corrosion resistant experimental exhaust gas front-end treatment device provided by this utility model uses PP board to make the tower body. Its excellent acid corrosion resistance can resist the erosion of various acidic exhaust gases, and it has excellent corrosion resistance, which greatly extends the service life of the equipment. Using the device in this utility model, the laboratory does not need to frequently replace the exhaust gas treatment equipment, reducing equipment procurement costs, and also avoiding experimental interruptions due to equipment damage, thus ensuring the continuity of experimental work.

[0014] This utility model provides a front-end treatment device for acid corrosion-resistant test exhaust gas, which has a high-efficiency tail gas treatment capacity. Utilizing a combination of spiral nozzles and spray pipes, the neutralizing liquid is evenly and finely sprayed within the tower, covering the entire exhaust gas flow area. The packing layer composed of Raschig rings and multi-faceted hollow spheres greatly increases the gas-liquid contact area and extends the reaction time. When treating tail gas containing acidic gases, the synergistic effect of these two components allows the acidic gas to fully react with the neutralizing liquid, effectively improving tail gas treatment efficiency, ensuring that the emitted gas meets environmental standards, and avoiding the risk of backflow. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the front-end treatment device for acid corrosion resistant test waste gas in this utility model.

[0017] In the diagram: 1. Main body; 2. Drain outlet; 3. Water tank; 4. Vertical pump inside the tank; 5. Water inlet; 6. Liquid level sensor; 7. Ball valve; 8. Viewing window; 9. Spray pipe; 10. Packing layer; 11. Spiral nozzle; 12. First baffle; 13. Second baffle; 14. Neutralizing liquid circulation layer; 15. Discharge layer; 16. Air inlet; 17. Air outlet. Detailed Implementation

[0018] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0021] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of the invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following figures denote similar items; therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0022] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore should not be construed as limiting the scope of protection of this invention.

[0023] like Figure 1 As shown, this utility model provides a front-end treatment device for acid corrosion test exhaust gas, including: a main body 1, which is divided into a neutral liquid circulation layer 14, a packing layer 10 and an exhaust layer 15 by a first partition 12 and a second partition 13, and ventilation holes are provided on the first partition 12 and the second partition 13. A water tank 3 is installed at the bottom of the neutral liquid circulation layer 14. A vertical pump 4 is installed inside the water tank 3. An air inlet 16 is installed on the main side wall above the water tank 3. The exhaust gas enters the exhaust gas front-end treatment device through the air inlet 16.

[0024] The interior of the packing layer 10 is filled with Raschig rings and multi-faceted hollow spheres, which increases the contact area between the waste gas and the neutralizing liquid and prolongs the residence time of the waste gas in the packing layer 10. Multiple spiral nozzles 11 are installed on the top of the packing layer 10. The spiral nozzles 11 are connected to the spray pipes 9. The end of the spray pipes 9 is connected to the neutralizing liquid in the water tank 3 of the coal mining vertical pump 4. The neutralizing liquid is pressurized by the vertical pump 4 in the tank and connected to the spiral nozzles 11 through the spray pipes 9 to spray the neutralizing liquid in the packing layer to neutralize the waste gas. The neutralizing liquid and the waste gas cannot react completely, and the resulting waste liquid is returned to the water tank 3.

[0025] An axial flow fan is installed in the discharge layer 15, and an air outlet 17 is installed at the top. The neutralized exhaust gas is discharged through the air outlet 17 under the suction force of the axial flow fan.

[0026] In a specific implementation, as a preferred embodiment, a water inlet 5 is provided on the side wall of the water tank 3, the bottom of the water tank 3 is connected to the drain outlet 2, and a ball valve is provided between the drain outlet 2 and the water tank 3; the top of the water tank 3 is an open structure.

[0027] In a specific implementation, as a preferred embodiment, a liquid level sensor 6 is also provided on the water tank 3 to monitor the liquid level in the water tank 3 in real time. When the liquid level is lower than the preset value, neutralizing liquid is added through the water inlet 5.

[0028] In a specific implementation, as a preferred embodiment, a ball valve 7 is provided on the spray pipe 9.

[0029] In a specific implementation, as a preferred embodiment, the neutralizing liquid sprayed by the spiral nozzle 11 is in the form of a mist, which can evenly cover the internal space of the filler layer 10. The waste liquid generated by the reaction of waste gas and neutralizing liquid flows back to the water tank 3 through the ventilation holes on the first partition 12.

[0030] In a specific implementation, as a preferred embodiment, viewing windows 8 are respectively provided on the side walls of the neutralizing liquid circulation layer 14, the packing layer 10 and the discharge layer 15 for observing the internal conditions of the device.

[0031] In specific implementation, as a preferred embodiment, the main body 1 is made of PP board with acid corrosion resistance.

[0032] Example like Figure 1 As shown, this utility model provides a front-end treatment device for acid corrosion resistant experimental waste gas. The main body 1 of this device is a Φ250×2300mm spray tower, made of PP board with a bottom thickness of 8mm and a body thickness of 5mm. This material has excellent acid corrosion resistance, effectively resisting the erosion of acidic waste gas and extending the service life of the equipment. The overall structure of the tower is reasonably designed, facilitating installation and maintenance, and meeting the spatial layout requirements of the laboratory.

[0033] The main structure is equipped with a DN32 air inlet 16 and an air outlet 17, as well as a DN40 drain outlet 2. The air inlet 16 is connected to the laboratory exhaust gas source, through which the exhaust gas enters the treatment device; the air outlet 17 discharges the purified gas; the drain outlet 2 is used to discharge the treated waste liquid, and is connected to a drain valve for easy control of waste liquid discharge.

[0034] The spray system consists of DN32 spray pipes 9 and one 6-point spiral nozzle 11. The spray pipes 9 are rationally distributed within the tower body to ensure that the neutralizing liquid sprayed from the spiral nozzle 11 can evenly cover the internal space of the tower, allowing for full contact between the waste gas and the neutralizing liquid and improving reaction efficiency. The special design of the spiral nozzle 11 allows the neutralizing liquid to form a fine mist, increasing the contact area with the waste gas and enhancing the treatment effect.

[0035] The packing layer 10 is filled with Φ75 Raschig rings and Φ50 multifaceted hollow spheres. The two types of packing work together to greatly increase the gas-liquid contact area, prolong the residence time of the waste gas in the tower, and make the reaction between the waste gas and the neutralization liquid more complete, thereby further improving the waste gas treatment effect.

[0036] The neutralization liquid circulation layer 14 is equipped with a 600×600×600mm water tank 3, with a built-in 0.75kW in-tank vertical pump 4. The in-tank vertical pump 4 delivers the neutralization liquid in the water tank 3 to the spray pipe 9, realizing the circulation and spraying of the neutralization liquid. At the same time, the water tank 3 is equipped with an automatic water replenishment device, namely the water inlet 5, and uses a liquid level sensor 6 to monitor the water tank level in real time. The water inlet 5 replenishes the water tank 3 with neutralization liquid using the principle of communicating vessels. When the liquid level is lower than the set value, the automatic water replenishment device is activated to replenish the water tank with neutralization liquid, ensuring the stable operation of the circulation system and maintaining the continuity and efficiency of the waste gas treatment.

[0037] The drive system in this device is configured according to requirements. The electrically driven devices include at least an axial flow fan, a spiral nozzle 11, a liquid level sensor 6, and an in-tank vertical pump 4. The working principle of this device is as follows: Acidic waste gas enters the tower body through inlet 16 and comes into full contact with the neutralizing liquid sprayed from the spiral nozzle 11, resulting in a neutralization reaction. The alkaline substances in the neutralizing liquid react with the acidic components in the acidic waste gas, converting the acidic waste gas into harmless or less harmful substances.

[0038] The exhaust gas continues to flow upward under the suction of the axial flow fan, passing through the packing layer 10 filled with Raschig rings and multifaceted hollow spheres. The packing layer 10 increases the gas-liquid contact area, allowing the incompletely reacted acidic exhaust gas to fully contact and react with the neutralizing liquid again, further improving the degree of exhaust gas purification.

[0039] The purified gas is discharged from outlet 17, meeting environmental emission standards. The waste liquid after the reaction is discharged into a designated waste liquid collection container through drain outlet 2 at the bottom of the tower, under the control of a ball valve.

[0040] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A front-end treatment device for acid corrosion resistant test exhaust gas, characterized in that, include: The main body (1) is divided into a neutral liquid circulation layer (14), a packing layer (10) and a discharge layer (15) by a first partition (12) and a second partition (13). Ventilation holes are provided on the first partition (12) and the second partition (13). The bottom of the neutral liquid circulation layer (14) is provided with a water tank (3), and a vertical pump (4) is provided in the water tank (3). An air inlet (16) is provided on the main body side wall above the water tank (3). The exhaust gas enters the exhaust gas front-end treatment device through the air inlet (16). The packing layer (10) is filled with Raschig rings and multi-faceted hollow spheres; multiple spiral nozzles (11) are installed on the top of the packing layer (10), and the spiral nozzles (11) are connected to the spray pipe (9). The neutralizing liquid in the water tank (3) is pressurized by the vertical pump (4) in the tank and connected to the spiral nozzles (11) through the spray pipe (9) to achieve the spraying of neutralizing liquid in the packing layer to neutralize the waste gas; An axial flow fan is installed in the discharge layer (15), and an air outlet (17) is installed at the top. The neutralized waste gas is discharged through the air outlet (17) under the suction force by the axial flow fan.

2. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, The water tank (3) has a water inlet (5) on its side wall, and the bottom of the water tank (3) is connected to the drain outlet (2). A ball valve is provided between the drain outlet (2) and the water tank (3). The top of the water tank (3) is an open structure.

3. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, The water tank (3) is also equipped with a liquid level sensor (6) for real-time monitoring of the liquid level in the water tank (3). When the liquid level is lower than the preset value, neutralizing liquid is added through the water inlet (5).

4. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, A ball valve (7) is provided on the spray pipe (9).

5. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, The neutralizing liquid sprayed by the spiral nozzle (11) is in the form of mist, which can evenly cover the internal space of the filler layer (10). The waste liquid generated by the reaction of waste gas and neutralizing liquid flows back to the water tank (3) through the ventilation hole on the first partition (12).

6. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, The neutral liquid circulation layer (14), the packing layer (10) and the discharge layer (15) are respectively provided with viewing windows (8) for observing the internal conditions of the device.

7. The front-end treatment device for acid corrosion resistance test exhaust gas according to claim 1, characterized in that, The main body (1) is made of PP board with acid corrosion resistance.

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