Waste gas treatment tower with good waste gas recovery effect

Abstract

The utility model belongs to the field of waste gas treatment. The waste gas treatment tower is composed of a tower body, a spraying assembly, a liquid inlet pipe, a gas outlet pipe, a gas inlet pipe, a gas guide plate, a stirring assembly and a motor. The gas guide plates are arranged on two sides of the tower body in a staggered manner, so that the flowing path of waste gas and the retention time of spraying liquid are prolonged, and the mixing reaction time of the waste gas and the spraying liquid is prolonged. Stirring fan blades of the stirring assembly are obliquely arranged, and when the motor is not started, spraying liquid impacts the fan blades to enable the fan blades to rotate, so that the spraying liquid and the waste gas are mixed more uniformly; when the motor is started, the spraying liquid is beaten into water mist by the fan blades, and the contact area is increased. The equipment can select whether the motor is started or not according to reality, is high in flexibility, can effectively improve the absorption and treatment efficiency of pollutants in waste gas, and improves the waste gas treatment quality.

Description

Technical Field

[0001] This utility model relates to the field of waste gas treatment, and in particular to a waste gas treatment tower with good waste gas recovery effect. Background Technology

[0002] During industrial production, large amounts of waste gas are emitted into the atmosphere. This waste gas often contains various harmful substances, such as sulfur dioxide, nitrogen oxides, particulate matter, and volatile organic compounds. The indiscriminate emission of waste gas not only severely pollutes air quality and harms human health, but also may trigger environmental problems such as acid rain and smog, causing significant damage to the ecological balance. Therefore, efficient waste gas treatment technology has become a focus of attention for both the industrial and environmental protection sectors. Common waste gas treatment towers are one of the important pieces of equipment for waste gas treatment. However, existing waste gas treatment towers have many drawbacks. For example, in terms of mixing waste gas and treatment liquid, the mixing effect is poor, leading to incomplete reactions and the inability to effectively remove many pollutants from the waste gas. Some treatment towers have simple internal structures, resulting in too short a residence time for waste gas inside the tower and insufficient contact time between the treatment liquid and waste gas, leading to low treatment efficiency and difficulty in meeting increasingly stringent environmental emission standards.

[0003] In terms of air guide plate design, traditional air guide plates cannot effectively balance air guidance and waste gas flow. They either fail to effectively guide the waste gas to mix thoroughly with the treatment liquid, or obstruct the normal flow of waste gas, resulting in poor treatment effect or limited treatment capacity. Furthermore, some air guide plates lack properly designed through holes, easily leading to the accumulation of treatment liquid or waste gas, affecting the normal operation and treatment effect of the equipment, while also increasing the difficulty of cleaning and maintenance costs. Improperly positioned air inlet pipes result in insufficient waste gas reaction paths, poor treatment effect, or, if too close to the bottom of the tower, they are easily blocked by accumulated treatment liquid, affecting the entry of waste gas and consequently impacting the stability of the entire treatment system. Some waste gas treatment towers lack an effective circulation system, with the treatment liquid being directly discharged after single use, wasting resources, increasing treatment costs, and being detrimental to environmental protection. Regarding the discharge of treated waste gas, the lack of a demister results in a large amount of moisture in the discharged waste gas, causing corrosion to downstream equipment and pipelines, affecting their service life, and the misty waste gas also has adverse environmental impacts. In terms of wastewater treatment, the lack of reasonable sewage discharge measures leads to the accumulation of wastewater inside the tower, which reduces the treatment performance of the treated liquid and may also cause equipment blockage and damage. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model discloses a waste gas treatment tower that achieves high efficiency, environmental friendliness, and economy while providing good waste gas recovery.

[0005] This utility model discloses a waste gas treatment tower with good waste gas recovery effect, which includes: a tower body, the interior of which is hollow, a spray assembly with several spray nozzles is arranged on the upper side of the tower body, an inlet pipe connected to the spray assembly and an outlet pipe connected to the tower body are arranged through the upper part of the tower body, an air inlet pipe is arranged through the tower body on the lower side of the tower body, several air guide plates are arranged inside the tower body, the air guide plates are arranged alternately on both sides of the tower body, a stirring assembly, the stirring assembly includes a stirring fan and a stirring rod, one end of the stirring rod is connected to the upper part of the tower body, the other end of the stirring rod is arranged below the spray assembly, the stirring fan is arranged at the end of the stirring rod away from the tower body, the stirring fan includes several stirring blades, the stirring blades are inclined, and a motor is arranged above the tower body and connected to the stirring rod.

[0006] Furthermore, the side of the air guide plate connected to the tower body is a plane that is perpendicular to the tower body or inclined upwards, while the side of the air guide plate away from the tower body is an upwardly concave arc.

[0007] Furthermore, the air guide plate has several through holes on the side closest to the tower body, and the air guide plate also has several through holes on the arc-shaped top end on the side furthest from the tower body.

[0008] Furthermore, taking the bottom plane of the tower as the horizontal plane, the vertical direction from the top to the bottom of the tower as the vertical direction, the direction of the air guide plate away from the tower as the horizontal direction, the projection of the air guide plate on the bottom of the tower as the air guide plate projection, and the length of the air guide plate projection in the horizontal direction is 60-80% of the length of the bottom of the tower on the horizontal plane.

[0009] Furthermore, the distance from the bottom of the tower to one side of the air intake pipe is greater than or equal to 20% and less than or equal to 40% of the total height of the tower.

[0010] Furthermore, a circulation pump is installed on the outside of the tower body, and at least two circulation pipes are installed on the circulation pump. One circulation pipe runs through the top of the tower body and is connected to the spray assembly, while the other circulation pipe runs through the bottom of the tower body and is located at a distance of less than 20% of the total height of the tower body from the bottom of the tower body.

[0011] Furthermore, a demister is installed at the outlet of the air outlet pipe.

[0012] Furthermore, a drain pipe that runs through the bottom of the tower is installed.

[0013] Beneficial effects:

[0014] This application utilizes staggered air guide plates to increase the residence time of the sprayed liquid and extend the flow path of the exhaust gas, allowing more time and opportunity for the exhaust gas and sprayed liquid to mix and react, thus improving the treatment effect. When the motor is not running, the sprayed liquid impacts the inclined stirring blades, causing them to rotate. The stirring blades agitate the sprayed liquid, changing its direction and allowing it to mix more evenly with the exhaust gas entering from the bottom of the tower, further enhancing the absorption effect. When the motor is running, the stirring blades not only agitate the sprayed liquid and change its direction but also atomize it into a water mist, greatly increasing the contact area between the sprayed liquid and the exhaust gas, thereby enhancing the binding effect and improving the efficiency and quality of exhaust gas treatment. The motor can be started or stopped depending on the actual situation. When the motor is not running, the impact force of the sprayed liquid drives the stirring blades; when the motor is running, the exhaust gas is treated more efficiently, increasing the flexibility and adaptability of the equipment. The staggered air guide plates extend the flow path of the exhaust gas and the residence time of the spray liquid, increasing the mixing reaction time between the two. The stirring component can change the direction of the spray liquid whether the motor is running or not, promoting uniform mixing with the exhaust gas. It can also agitate the spray liquid into water mist when the motor is running, increasing the contact area and effectively improving the absorption and treatment efficiency of pollutants in the exhaust gas. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of a waste gas treatment tower according to an embodiment of this application.

[0016] Figure 2 This is a cross-sectional structural diagram of a waste gas treatment tower according to an embodiment of this application.

[0017] In the diagram: exhaust gas treatment tower 100, tower body 11, spray assembly 111, spray nozzle 1111, liquid inlet pipe 1112, gas outlet pipe 112, air inlet pipe 113, air guide plate 114, sewage discharge pipe 115, stirring assembly 12, stirring fan 121, stirring blade 1211, stirring rod 122, motor 13, circulating pump 14, circulating pipe 141. Detailed Implementation

[0018] To enable those skilled in the art to better understand the present invention, the technical solutions in the specific embodiments of the present invention will be clearly and completely described below.

[0019] This utility model discloses a waste gas treatment tower 100 with good waste gas recovery effect, such as Figure 1 As shown, it includes a tower body 11, such as Figure 2As shown, the tower body 11 is hollow inside. A spray assembly 111 with several spray nozzles 1111 is installed on the upper side of the tower body 11. An inlet pipe 1112 connected to the spray assembly 111 and an outlet pipe 112 are installed through the upper part of the tower body 11, both penetrating the tower body 11. The inlet pipe 1112 is used to replenish the spray assembly 111 with spray liquid. An air inlet pipe 113 is installed on the lower side of the tower body 11. Several air guide plates 114 are installed inside the tower body 11, staggered on both sides of the tower body 11. The air guide plates 114 serve to increase the residence time of the spray liquid, allowing the exhaust gas to mix with the spray liquid. The spray liquid is mixed and reacted better. On the other hand, the air guide plate 114 is used to increase the flow path of the exhaust gas, which is also to increase the reaction time with the spray liquid. The stirring assembly 12 includes a stirring fan 121 and a stirring rod 122. One end of the stirring rod 122 is connected to the upper part of the tower body 11, and the other end of the stirring rod 122 is located below the spray assembly 111. The stirring fan 121 is located at the end of the stirring rod 122 away from the tower body 11. The stirring fan 121 includes a plurality of stirring blades 1211, which are inclined. The motor 13 is located above the tower body 11 and is connected to the stirring rod 122. When motor 13 is not running, the spray nozzles 1111 of the spray assembly 111 spray the spray liquid, which impacts the inclined stirring blades 1211, causing them to rotate. The stirring blades 1211 agitate the spray liquid, changing its direction and allowing it to mix more evenly with the exhaust gas entering through the air inlet pipe 113 at the bottom of the tower body 11, thus increasing the absorption effect on the exhaust gas. When motor 13 starts, the stirring blades 1211 agitate the spray liquid, changing its direction, and simultaneously agitate it into a water mist, further enhancing its mixing with the exhaust gas. This application utilizes staggered air guide plates 114 to increase the residence time of the spray liquid and extend the flow path of the exhaust gas, allowing more time and opportunity for the exhaust gas and spray liquid to mix and react, thereby improving the treatment effect on the exhaust gas. When motor 13 is not running, the sprayed liquid impacts the inclined stirring blades 1211, causing them to rotate. The stirring blades 1211 agitate the sprayed liquid, changing its direction and allowing it to mix more evenly with the exhaust gas entering from the bottom air inlet pipe 113 of the tower body 11, further enhancing the absorption effect. When motor 13 is running, the stirring blades 1211 not only agitate the sprayed liquid and change its direction but also atomize it into a water mist, greatly increasing the contact area between the sprayed liquid and the exhaust gas, thus enhancing their bonding effect and improving the efficiency and quality of exhaust gas treatment. The operation of motor 13 can be selected based on actual conditions. When motor 13 is not running, the stirring blades 1211 operate solely due to the impact force of the sprayed liquid. Running motor 13 allows for more efficient exhaust gas treatment, increasing the flexibility and adaptability of the equipment.

[0020] In one implementation, the air guide plate 114 is connected to one side of the tower body 11 in a plane perpendicular to or inclined upwards from the tower body 11, while the side of the air guide plate 114 away from the tower body 11 is an upwardly concave arc shape. This configuration of the air guide plate 114 increases the residence time of the exhaust gas, thereby increasing the mixing time and effect. The upwardly concave arc shape of the side of the air guide plate 114 away from the tower body 11 prevents the exhaust gas from flowing in a straight line, requiring it to flow along an arc-shaped path. This increases the actual flow distance of the exhaust gas within the tower body 11, thus extending the residence time and providing more time for the exhaust gas to fully react with the spray liquid. The vertical or upwardly inclined plane connection causes the exhaust gas to change direction upon entering the air guide plate 114, and then further changes its flow direction and speed upon encountering the concave arc shape, creating a complex flow trajectory for the exhaust gas within the tower body 11. This avoids short-circuiting of the exhaust gas, allowing it to be directly discharged and ensuring that the exhaust gas can fully contact the spray liquid.

[0021] In one implementation, the air guide plate 114 has several through holes on the side near the tower body 11, and several through holes are also provided at the arc-shaped top end of the side of the air guide plate 114 away from the tower body 11. This arrangement serves two purposes: firstly, to prevent the spray liquid from accumulating above the air guide plate 114, affecting the mixing and cleaning effects; and secondly, to prevent waste gas from accumulating below the air guide plate 114, affecting its treatment and discharge. The through holes at the arc-shaped top end of the air guide plate 114, both near and away from the tower body 11, allow the spray liquid to pass smoothly, preventing excessive accumulation above the air guide plate 114. Accumulation of the spray liquid would prevent it from uniformly mixing with the waste gas, affecting the absorption and treatment of pollutants in the waste gas. The through holes ensure that the spray liquid flows continuously and evenly downwards, ensuring sufficient contact with the waste gas. After the equipment has been running for a period of time, some impurities or crystals may remain on the air guide plate 114. The presence of through-holes facilitates cleaning. Whether through manual rinsing or the equipment's own cleaning system, the cleaning fluid can thoroughly rinse the upper and lower surfaces of the air guide plate 114 through the through-holes, reducing dirt residue, maintaining the performance and cleanliness of the air guide plate 114, and extending the service life of the equipment. If the exhaust gas below the air guide plate 114 cannot be discharged in time, it will accumulate, leading to increased local pressure and affecting the normal flow and treatment process of the exhaust gas. The through-holes provide an additional flow channel for the exhaust gas, allowing it to be smoothly discharged from below the air guide plate 114, preventing the exhaust gas from accumulating below the air guide plate 114, ensuring smooth flow of the exhaust gas within the tower body 11, and enabling the entire exhaust gas treatment process to proceed continuously and stably.

[0022] In one implementation, the bottom plane of the tower body 11 is taken as the horizontal plane, the distance from the top to the bottom of the tower body 11 is taken as the vertical direction, and the direction of the air guide plate 114 away from the tower body 11 is taken as the horizontal direction. The projection of the air guide plate 114 on the bottom of the tower body 11 is the projection of the air guide plate 114, and the length of the projection of the air guide plate 114 in the horizontal direction is 60-80% of the length of the bottom of the tower body 11 on the horizontal plane. This arrangement is to guide the air without affecting the flow of waste gas. It also ensures that the waste gas flows meanderingly within the tower body 11, maximizing the contact time with the spray liquid and increasing the treatment effect. If the projection of the air guide plate 114 is too long, close to or equal to the length of the bottom of the tower body 11, it may seriously obstruct the flow of waste gas, increase the flow resistance of waste gas within the tower, resulting in poor waste gas discharge, and may even affect the air intake effect of the air inlet pipe 113. By controlling the length to 60-80%, sufficient space can be left for the exhaust gas to flow smoothly within the tower body 11 while effectively guiding the gas. This ensures that the exhaust gas can flow smoothly upward after entering through the inlet pipe 113 and come into contact with the spray liquid, and finally be discharged through the outlet pipe 112.

[0023] In one implementation, the inlet pipe 113 extends to one side of the tower body 11, with a distance from the bottom of the tower body 11 that is greater than or equal to 20% and less than or equal to 40% of the total height of the tower body 11. This arrangement ensures that the exhaust gas has sufficient path for reaction and prevents the spray liquid from accumulating at the bottom of the tower and clogging the inlet pipe 113. Within this height range, the inlet pipe 113 guarantees that the exhaust gas has a sufficiently long path and time to react with the spray liquid from its entry into the tower body 11 to its discharge from the outlet pipe 112. During its ascent, the exhaust gas has ample opportunity to contact and mix with the spray liquid at different heights, allowing the pollutants in the exhaust gas to fully react with the chemicals in the spray liquid, thereby improving the treatment effect and ensuring that the emitted exhaust gas meets environmental standards. If the inlet pipe 113 is positioned too low, close to the bottom of the tower body 11, the spray liquid will easily accumulate at the bottom of the tower body 11 under gravity, potentially submerging the inlet pipe 113 and causing blockage. This would affect the normal entry of exhaust gas and may even damage the equipment. Setting the inlet pipe 113 at a distance of at least 20% of the total height of the tower body 11 from the bottom can effectively prevent the spray liquid from accumulating at the inlet pipe 113, ensuring its unobstructed flow and allowing exhaust gas to stably enter the tower body 11 for treatment.

[0024] In one implementation, a circulation pump 14 is provided on the outside of the tower body 11. The circulation pump 14 has at least two circulation pipes 141. One circulation pipe 141 extends through the top of the tower body 11 and connects to the spray assembly 111. The other circulation pipe 141 extends through the bottom of the tower body 11 and is located less than 20% of the total height of the tower body 11 from the bottom. The circulation pump 14 enhances the effect of the spray liquid and maximizes resource conservation. The circulation pump 14 draws liquid from the bottom of the tower body 11 and transports it to the spray assembly 111 through the upper circulation pipe 141. This allows the spray liquid to be continuously and stably sprayed from the spray nozzles 1111, expanding the coverage area of ​​the spray liquid within the tower body 11 and ensuring a relatively uniform liquid output from each spray nozzle 1111. This results in more comprehensive contact with the exhaust gas, improving the mixing effect between the exhaust gas and the spray liquid, and enhancing the absorption and treatment capacity of pollutants in the exhaust gas.

[0025] As one implementation method, a demister is installed at the outlet of the exhaust pipe 112. The demister is used to remove moisture from the treated waste gas at the outlet of the exhaust pipe 112. Treated waste gas often contains a certain amount of moisture. If this moisture is not removed, it may condense in subsequent pipes and equipment, leading to pipe corrosion, equipment damage, and affecting the service life and normal operation of the entire waste gas treatment system. The demister effectively removes moisture from the waste gas, reducing the risk of corrosion to downstream equipment and pipes, lowering equipment maintenance costs, and ensuring the stability and reliability of the system.

[0026] In one implementation, a drain pipe 115 is provided at the bottom of the tower body 11, penetrating the tower body 11. The drain pipe 115 is used to discharge the waste liquid from the tower body 11 after multiple reactions with the exhaust gas. The waste liquid from multiple reactions with the exhaust gas accumulates a large amount of pollutants and reaction products. If not discharged in time, these substances will continuously accumulate inside the tower body 11, affecting the treatment effect of the spray liquid and reducing its ability to remove pollutants from the exhaust gas. The drain pipe 115 can discharge the waste liquid in a timely manner, ensuring the cleanliness and treatment performance of the spray liquid inside the tower body 11, and maintaining the efficient operation of the exhaust gas treatment system.

[0027] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A waste gas treatment tower with good waste gas recovery effect, characterized in that, include: The tower body is hollow inside. A spray assembly with several spray nozzles is installed on the upper side of the tower body. A liquid inlet pipe connected to the spray assembly and an air outlet pipe are installed through the upper part of the tower body. An air inlet pipe is installed through the tower body on the lower side of the tower body. Several air guide plates are installed inside the tower body, and the air guide plates are arranged alternately on both sides of the tower body. The mixing assembly includes a mixing fan and a mixing rod. One end of the mixing rod is connected to the upper part of the tower body, and the other end of the mixing rod is located below the spraying assembly. The mixing fan is located at the end of the mixing rod away from the tower body. The mixing fan includes several mixing blades, which are inclined. The motor is located above the tower body and is connected to the stirring rod.

2. The waste gas treatment tower with good waste gas recovery effect according to claim 1, characterized in that: The air guide plate is connected to the tower body on one side in a plane that is perpendicular to the tower body or inclined upwards, while the side of the air guide plate away from the tower body is an upwardly concave arc.

3. The waste gas treatment tower with good waste gas recovery effect according to claim 2, characterized in that: The air guide plate has several through holes on the side closest to the tower body, and the air guide plate also has several through holes on the arc-shaped top end on the side furthest from the tower body.

4. The waste gas treatment tower with good waste gas recovery effect according to claim 3, characterized in that: With the bottom plane of the tower as the horizontal plane, the vertical direction from the top to the bottom of the tower as the vertical direction, the direction of the air guide plate away from the tower as the horizontal direction, the projection of the air guide plate on the bottom of the tower as the air guide plate projection, and the length of the air guide plate projection in the horizontal direction is 60-80% of the length of the bottom of the tower on the horizontal plane.

5. The waste gas treatment tower with good waste gas recovery effect according to claim 1, characterized in that: The air intake pipe extends to one side of the tower body, specifically at a distance from the bottom of the tower body that is greater than or equal to 20% and less than or equal to 40% of the total height of the tower body.

6. The waste gas treatment tower with good waste gas recovery effect according to claim 5, characterized in that: A circulation pump is installed on the outside of the tower body. The circulation pump is equipped with at least two circulation pipes. One circulation pipe runs through the top of the tower body and is connected to the spray assembly. The other circulation pipe runs through the bottom of the tower body and is located at a distance of less than 20% of the total height of the tower body from the bottom of the tower body.

7. The waste gas treatment tower with good waste gas recovery effect according to claim 1, characterized in that: A demister is installed at the outlet of the air outlet pipe.

8. The waste gas treatment tower with good waste gas recovery effect according to claim 1, characterized in that: A sewage pipe runs through the bottom of the tower.

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