Waste gas purification treatment tower

Abstract

The invention provides a waste gas purification treatment tower, and belongs to the technical field of waste gas treatment. Comprising a waste gas purification tower, a circulating pump is installed at the bottom end of one side of the waste gas purification tower, pneumatic piston type vibrators are installed on the opposite side of the waste gas purification tower, a water tank is installed at the bottom end in the waste gas purification tower, and the water tank is communicated with a water inlet of the circulating pump; a spraying assembly is arranged in the waste gas purification tower and is used for spraying absorption liquid; a filler assembly is arranged below the spraying assembly and is used for promoting mixing of the waste gas and the absorption liquid; and a backflow assembly is arranged above the spraying assembly and is used for recycling the absorption liquid in the purified waste gas. Spraying range is enlarged through centrifugal force of the rotary spray head, the conical cover forms an airflow protection area, spraying is more uniform and stable, meanwhile, liquid pressure energy is converted into rotation kinetic energy through the spiral design of the first flow guide plate, and gas-liquid contact effect is enhanced.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a waste gas purification tower. Background Technology

[0002] Waste gas purification towers are one of the most crucial and commonly used pieces of equipment in industrial waste gas treatment. Their core principle is to utilize the full contact between gas and liquid, through physical absorption or chemical reaction, to transfer pollutants from the waste gas into the liquid, thereby achieving the purpose of purifying the waste gas.

[0003] When treating waste gas in existing waste gas treatment towers, particulate matter, viscous substances, and salts generated from reactions in the waste gas easily adhere to the nozzles and packing surfaces, causing nozzle blockage. At the same time, it can also narrow the airflow channels on the packing surface, reducing the effective gas-liquid contact area and thus lowering the efficiency of the absorbent liquid in absorbing flue gas. In addition, the grid holes at the bottom of the packing are easily blocked, resulting in a severe uneven distribution of airflow and liquid flow above the grid, causing flow deviation, and causing most of the gas and liquid to pass through only a few unblocked areas, resulting in a sharp decrease in the efficiency of the packing layer.

[0004] Therefore, this application provides a waste gas purification tower to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a waste gas purification tower to solve the problem that particulate matter, viscous substances, and salts generated in the reaction of existing waste gas can easily cause blockage of nozzles, packing, and bottom grid of packing.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution: A waste gas purification tower includes: a waste gas purification tower, a circulating pump installed at one bottom side of the waste gas purification tower, pneumatic piston vibrators installed on opposite sides of the waste gas purification tower, a water tank installed at the bottom interior of the waste gas purification tower, the water tank being connected to the inlet of the circulating pump; a spray assembly installed inside the waste gas purification tower for spraying absorbent liquid; a packing assembly installed below the spray assembly for promoting mixing of waste gas and absorbent liquid; and a reflux assembly installed above the spray assembly for recovering absorbent liquid from the purified waste gas.

[0007] Optionally, the spray assembly includes a liquid guide pipe, which is fixedly connected to the inner wall of the waste gas purification tower. The liquid guide pipe is connected to the outlet of the circulating pump through a pipe, and the bottom end of the liquid guide pipe is connected to several rotating nozzles.

[0008] Optionally, the spray assembly further includes a plurality of conical shrouds, each of which is installed on the top outer wall of the rotating nozzle. A first guide plate is fixedly connected to the inner wall of each conical shroud, and a fixing ring is fixedly connected to the top outer wall of each rotating nozzle. Hydraulic rods are installed on both sides of the bottom end of each fixing ring.

[0009] Optionally, the spray assembly further includes several rings, each ring being fixedly connected to the output end of two hydraulic rods, and each ring having several push rods fixedly connected to its bottom end.

[0010] Optionally, the spray assembly includes a plurality of rotating tubes, each of which is rotatably connected to the bottom end of the conical cover via a connecting seat. A protruding plate is fixedly connected to one side of the outer wall of each rotating tube, and a return spring is fixedly connected to one side of each protruding plate. The other end of each return spring is fixedly connected to the connecting seat.

[0011] Optionally, the spray assembly further includes a plurality of outer nozzles, each of which is connected to the inside of one end of a rotating tube. The inner wall of the other end of each rotating tube is connected to an inner nozzle, and an anti-stick cap is fixedly connected to the outer wall of each inner nozzle.

[0012] Optionally, the packing assembly further includes two sieve plates, which are fixedly connected to the inner wall of the exhaust gas purification tower. The top of the upper sieve plate is provided with several first hollow spheres, and the outer wall of each first hollow sphere is provided with several corrugated windows. The top of the lower sieve plate is provided with several second hollow spheres, and the interior of each second hollow sphere is fixedly connected with several spiral guide plates.

[0013] Optionally, the packing assembly further includes a shaped mounting base, which is fixedly connected to the inner wall of the exhaust gas purification tower, and electric push rods are installed at both ends of the shaped mounting base.

[0014] Optionally, the packing assembly further includes a shaped rod, which is slidably connected to the inner wall of the shaped mounting base. Both ends of the shaped rod are fixedly connected to the output end of the electric push rod. Several conical brushes are fixedly connected to the bottom end of the shaped rod. A corrugated plate is provided at the bottom end of the shaped mounting base, and the corrugated plate is fixedly connected to the inner wall of the exhaust gas purification tower.

[0015] Optionally, the reflux assembly further includes a reflux guide plate, which is fixedly connected to the inner wall of the exhaust gas purification tower. The inner wall of the exhaust gas purification tower is connected to a guide pipe, and the other end of the guide pipe is connected to a water tank.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: In the above scheme, the centrifugal force of the rotating nozzle expands the spray range, and the conical shroud forms an airflow protection zone, reducing the interference of rising airflow on droplets and making the spray more uniform and stable. At the same time, the spiral design of the first guide plate converts the liquid pressure energy into rotational kinetic energy, allowing the liquid to be thrown out evenly and enhancing the gas-liquid contact effect. Furthermore, the combination of the outer and inner nozzles and the control of the spray volume through the needle valve reduce resource waste and simultaneously achieve the simultaneous cleaning of the inner wall of the tower and the parts inside the conical shroud. The trumpet-shaped corrugated surface structure of the anti-stick cap enhances the vibration and throwing ability, preventing the inner nozzle from clogging. Finally, the hydraulic rod pushes the rotating tube to adjust the nozzle angle, which facilitates targeted cleaning and thus improves cleaning efficiency.

[0017] In the above scheme, a pneumatic piston vibrator drives the sieve plate to vibrate, preventing stains from adhering to the sieve plate surface and causing stains inside the packing to fall off. The corrugated window increases the surface area of ​​the first hollow sphere, while simultaneously dispersing the liquid flow to form a thinner liquid film, improving wetting uniformity. The corrugated structure guides the airflow to generate micro-vortices, achieving self-cleaning. At the same time, the combination of the second hollow sphere and the spiral guide plate extends the liquid residence time, and the centrifugal effect improves the packing wetting rate and gas-liquid mass transfer efficiency, driving the sieve plate to vibrate and causing stains inside the packing to fall off. Then, an electric push rod drives a conical brush to clean the holes in the corrugated plate, thereby preventing the holes in the corrugated plate from becoming blocked and improving gas conduction efficiency. Finally, a spiral return guide plate recovers the liquefied absorbent to the water tank, realizing liquid recycling and reducing wastewater discharge and raw material consumption.

[0018] A closed-loop recycling system is formed by the spiral reflux guide plate of the reflux assembly and the ultrasonic vibrating plate of the water tank. The guide plate reduces residual losses during the reflux process of the absorbent through its spiral structure, achieving a recycling efficiency of over 95%. The ultrasonic vibrating plate in the water tank can periodically clean chemical crystals and precipitates in the absorbent, preventing crystallization from clogging the circulation pump and pipes, while extending the service life of the absorbent, reducing the frequency of absorbent replacement, lowering raw material consumption costs by about 40%, and reducing wastewater discharge.

[0019] The anti-stick caps on the inner nozzles, made of a trumpet-shaped corrugated surface and a wear-resistant and corrosion-resistant material (ceramic and PTFE composite), not only remove adhering substances through vibration but also resist chemical corrosion from the absorbent liquid, extending the nozzle's service life. Components in direct contact with the absorbent liquid, such as the conical hood and liquid guide pipe, are treated with corrosion-resistant coatings, making them suitable for treating acidic, alkaline, and sulfur-containing corrosive waste gases. This avoids leakage risks due to corrosion and reduces safety hazards. The airflow protection zone formed by the conical hood not only improves spray uniformity but also guides the waste gas along the central axis of the tower, preventing the problem of "incompletely purified local waste gas emission" caused by airflow deviation. Simultaneously, the smooth inner wall design of the tower, combined with the tower wall cleaning function of the outer nozzles, reduces the residual accumulation of absorbent liquid and pollutants on the tower wall, preventing the long-term reaction of residual substances to produce secondary harmful gases (such as volatile organic compounds and corrosive gases), ensuring that the purified waste gas emissions meet standards, and eliminating the risk of secondary pollution inside the tower.

[0020] The conical hood provides insulation, reducing the impact of high-temperature exhaust gas on the spray liquid temperature and preventing evaporation loss due to excessive temperature. The spiral structure of the first guide plate prevents droplets from condensing into large water droplets during high-humidity exhaust gas treatment, ensuring the stability of gas-liquid contact. Furthermore, the drain pipe design of the water tank facilitates the periodic discharge of bottom sediment, preventing waste liquid accumulation from affecting the purity of the absorbent. It can adapt to exhaust gas conditions with different temperatures and humidity, ensuring stable operation of the equipment under complex conditions such as high humidity, high dust, and high concentration. Attached Figure Description

[0021] Figure 1 This is a frontal three-dimensional structural diagram of a waste gas purification tower; Figure 2 A schematic diagram of the overall three-dimensional structure of a waste gas purification tower; Figure 3 This is a three-dimensional cross-sectional structural diagram of a waste gas purification tower. Figure 4 This is a schematic diagram of the three-dimensional structure of the spray assembly. Figure 5 This is a schematic diagram of the three-dimensional structure of the spray assembly. Figure 6 This is a schematic diagram of the three-dimensional structure of the spray assembly. Figure 7 This is a schematic diagram of the three-dimensional structure of the spray assembly. Figure 8 This is a schematic diagram of the three-dimensional structure of the first hollow sphere; Figure 9 This is a schematic diagram of the three-dimensional cross-sectional structure of the second hollow sphere. Figure 10 This is a schematic diagram of the three-dimensional structure of the filler assembly. Figure 11This is a schematic diagram of a cross-sectional three-dimensional structure of the packing assembly. Figure 12 This is a schematic diagram of the three-dimensional structure of the reflow assembly.

[0022] Figure label: 1. Waste gas purification tower; 2. Circulating pump; 3. Water tank; 4. Pneumatic piston vibrator; 5. Spray assembly; 501. Liquid guide pipe; 502. Rotary nozzle; 503. Conical shroud; 504. First guide plate; 505. Fixing ring; 506. Hydraulic rod; 507. Circular ring; 508. Push rod; 509. Rotating tube; 510. Convex plate; 511. Return spring; 512. Outer nozzle; 513. Inner nozzle; 514. Anti-stick cap; 6. Packing assembly; 601. First hollow ball; 602. Corrugated window; 603. Second hollow ball; 604. Spiral guide plate; 605. Screen plate; 606. Corrugated plate; 607. Irregularly shaped mounting base; 608. Electric push rod; 609. Irregularly shaped rod; 610. Conical brush; 7. Return assembly; 701. Return guide plate; 702. Guide pipe.

[0023] As shown in the figure, specific structures and devices are labeled in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to the specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs, and such adjustments or modifications are still included in the scope of the appended claims. Detailed Implementation

[0024] The present invention provides a waste gas purification tower in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art can use other alternative methods to implement some known technologies; moreover, the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0025] like Figures 1 to 12As shown, an embodiment of the present invention provides a waste gas purification tower, comprising: a waste gas purification tower 1, a circulation pump 2 installed at one bottom end of the waste gas purification tower 1, pneumatic piston vibrators 4 installed on a pair of sides of the waste gas purification tower 1, a water tank 3 installed at the bottom end of the interior of the waste gas purification tower 1, a drain pipe connected to one inner wall of the water tank 3 to facilitate the discharge of liquid inside the water tank 3, and an ultrasonic transducer and an ultrasonic vibrating plate installed at the bottom end of the interior of the water tank 3. When cleaning the water tank 3, the ultrasonic generator is activated, and the transducer, upon receiving an electrical signal, drives the ultrasonic vibrating plate. Vibration is applied to disperse the chemical crystals inside the water tank 3, thereby preventing scale buildup and ensuring the cleanliness of the spray liquid. This reduces clogging of the nozzles and packing from the source. The water tank 3 is connected to the inlet of the circulating pump 2. The interior of the exhaust gas purification tower 1 is equipped with a spray assembly 5, which is used to spray the absorbent liquid. Below the spray assembly 5 is a packing assembly 6, which is used to promote the mixing of exhaust gas and absorbent liquid. Above the spray assembly 5 is a reflux assembly 7, which is used to recover the absorbent liquid from the purified exhaust gas.

[0026] like Figures 2 to 7As shown, the spray assembly 5 includes a liquid guide pipe 501, which is fixedly connected to the inner wall of the exhaust gas purification tower 1. The liquid guide pipe 501 is connected to the outlet of the circulating pump 2 via a pipe. Several rotating nozzles 502 are connected to the bottom end of the liquid guide pipe 501. The rotating nozzles 502 rotate during spraying, and the absorbent liquid is thrown out by centrifugal force, thereby expanding the spray range of the absorbent liquid and promoting the mixing of the absorbent liquid and the exhaust gas. The spray assembly 5 also includes several conical shrouds 503, which are respectively installed on the top outer wall of the rotating nozzles 502. The conical shrouds 503 form a relatively static protection zone between the nozzles and the rising airflow. After the absorbent liquid sprayed by the rotating nozzles 502 is initially formed and stabilized inside the shroud, it is then evenly discharged from the lower edge of the shroud, thereby greatly reducing the direct impact of the exhaust gas and avoiding the rising airflow. Small droplets that strongly interfere with the absorbent liquid are blown away prematurely or directly collide with the tower wall, causing wall flow or uneven distribution. Simultaneously, the inner wall of the conical hood 503 guides and regulates the droplet ejection angle, forming a more regular and stable conical spray surface, thus ensuring the predictability and uniformity of liquid spraying. An annular tube is installed at the bottom of the conical hood 503, and a first flexible tube is connected to the top of the annular tube. A valve is installed on the first flexible tube to facilitate the introduction of liquid into the annular tube. Several rotating seats are fixedly connected to the lower end of the annular tube, and a rotating tube 509 is rotatably connected between every two rotating seats. A second flexible tube is connected inside the annular tube, and the other end of the second flexible tube passes through the rotating seats and is connected to the rotating tube 509. Each conical shroud 503 has a first guide plate 504 fixedly connected to its inner wall. The first guide plate 504 is a spiral plate surface. The liquid is forced to pass through its spiral flow channel, and the flow direction changes from axial to high-speed rotating tangential, thereby efficiently converting the pressure energy of the liquid into rotational kinetic energy, and then evenly throwing the liquid to all sides. Each rotating nozzle 502 has a fixing ring 505 fixedly connected to its top outer wall. Hydraulic rods 506 are installed on both sides of the bottom end of each fixing ring 505. The spray assembly 5 also includes several rings 507. Each ring 507 is fixedly connected to the output end of two hydraulic rods 506. Several push rods 508 are fixedly connected to the bottom end of each ring 507. The inside of the push rods 508 The bottom end has an arc-shaped groove that contacts the convex plate 510. The spray assembly 5 includes several rotating tubes 509, which are rotatably connected to the bottom end of the conical cover 503 via connecting seats. A convex plate 510 is fixedly connected to one outer wall of each rotating tube 509. When the push rod 508 moves down, it presses down on the convex plate 510, which is fixed to the rotating tube 509. Therefore, when the push rod 508 moves down, the force at the contact point between the arc-shaped groove and the convex plate 510 is decomposed into axial force and tangential force. The tangential force then drives the convex plate 510 to rotate, while the convex plate 510 compresses the return spring 511.This compresses the return spring 511, causing the rotating tube 509 to rotate. After the convex plate 510 completes its rotation, the hydraulic rod 506 is restarted, causing the push rod 508 to move upward, thus eliminating the pressure on the convex plate 510. Simultaneously, the return spring 511 causes the convex plate 510 to return to its original position. Each convex plate 510 has a return spring 511 fixedly connected to one side, and the other end of each return spring 511 is fixedly connected to the connecting seat. The spray assembly 5 also includes several outer nozzles 512. Each outer nozzle 512 is equipped with a needle valve. By adjusting the needle valve, the orifice diameter of the outer nozzle 512 is controlled, thereby regulating the volume of liquid sprayed from the outer nozzle 512 and reducing the waste of water resources and absorbent liquid. The nozzle is made of a composite material of ceramic and polytetrafluoroethylene, which combines wear resistance, corrosion resistance, and anti-stick properties, thereby reducing the risk of scaling. Several outer nozzles 512 are connected to the inside of one end of the rotating tube 509, and the inner wall of the other end of each rotating tube 509 is connected to an inner nozzle 513. The outer wall of each inner nozzle 513 is fixedly connected to an anti-stick cap 514. The anti-stick cap 514 has a horn-shaped structure and its surface is corrugated. The horn structure amplifies high-frequency vibrations, generating a strong inertial shear force to actively shake off large pieces of deposits on its surface, thereby protecting the inner nozzle 513. At the same time, the corrugated texture weakens the adhesion between the material and its surface from the source, further reducing the adhesion of deposits.

[0027] like Figures 3 to 12As shown, the packing assembly 6 also includes two sieve plates 605, which are fixedly connected to the inner wall of the exhaust gas purification tower 1. The top of the upper sieve plate 605 is provided with several first hollow spheres 601. The corrugated window 602 increases the surface area inside and outside the spheres. When liquid flows through the corrugations of the corrugated window 602, it is dispersed and thinned, forming a thinner liquid film. Simultaneously, the grooves of the corrugations guide the liquid distribution, making the packing surface more evenly wetted, improving the efficiency of gas-liquid contact and the utilization rate of the packing. At the same time, when gas passes through the corrugated window 602, the flow direction is forced to change, generating more micro-vortices and turbulence, which in turn helps to remove dust or other contaminants adhering to the surface. The viscous substance undergoes self-cleaning. Each first hollow sphere 601 has several corrugated windows 602 penetrating its outer wall. Several second hollow spheres 603 are positioned at the top of the lower sieve plate 605. The sieve plate 605 is located near the installation position of the pneumatic piston vibrator 4, facilitating vibration under its drive. Several spiral guide plates 604 are fixedly connected inside each second hollow sphere 603. These spiral guide plates 604 drive the absorbent liquid to flow in an orderly spiral pattern, extending the liquid's flow time and thus the gas-liquid contact time. Simultaneously, as the spiral guide plates 604 drive the liquid flow, they also... The core action helps the liquid spread on the inner wall of the sphere, improving the overall wettability of the packing and thus improving the gas-liquid contact efficiency. The packing assembly 6 also includes a shaped mounting base 607, which is fixedly connected to the inner wall of the exhaust gas purification tower 1. Electric push rods 608 are installed at both ends of the shaped mounting base 607. The packing assembly 6 also includes a shaped rod 609, which is slidably connected to the inner wall of the shaped mounting base 607. Both ends of the shaped rod 609 are fixedly connected to the output end of the electric push rod 608. Several conical brushes 610 are fixedly connected to the bottom end of the shaped rod 609. The conical brushes 610 are cones that are larger at the top and smaller at the bottom. The conical brush 610 is designed to easily enter the internal holes of the corrugated plate 606, thereby improving the cleaning efficiency of the corrugated plate 606 and preventing the holes on the corrugated plate 606 from becoming clogged. The bottom of the irregularly shaped mounting base 607 is provided with the corrugated plate 606, which is fixedly connected to the inner wall of the exhaust gas purification tower 1. The reflux assembly 7 also includes a reflux guide plate 701, which is fixedly connected to the inner wall of the exhaust gas purification tower 1. The reflux guide plate 701 has a spiral structure, which facilitates the export of liquefied liquid to the inside of the guide pipe 702. The inner wall of the exhaust gas purification tower 1 is connected to the guide pipe 702, and the other end of the guide pipe 702 is connected to the water tank 3.

[0028] The working principle of the technical solution provided by this invention is as follows: During operation, the waste gas is introduced into the waste gas purification tower 1 through the inlet. At this time, the valve is opened and the circulation pump 2 is started. The circulation pump 2 introduces the absorbent liquid into the liquid guide pipe 501, and then the absorbent liquid is introduced into the rotary nozzle 502 through the liquid guide pipe 501. The rotary nozzle 502 sprays the absorbent liquid onto the surface of the first hollow sphere 601 and the second hollow sphere 603, so that a liquid film is formed on the surface of the first hollow sphere 601 and the second hollow sphere 603. At this time, the waste gas passes through the interior of the first hollow sphere 601 and the second hollow sphere 603 wrapped by the liquid film, comes into contact with the waste gas, mixes and reacts. At the same time, the purified gas continues to move upward and is then discharged through the waste gas purification tower 1.

[0029] In addition, when the purified gas moves upward to the top of the exhaust gas purification tower 1, the temperature of the gaseous liquid carried inside the purified gas decreases and begins to liquefy. The liquefied absorbent is introduced into the guide pipe 702 through the return guide plate 701, and then the absorbent is reintroduced into the water tank 3 through the guide pipe 702.

[0030] Furthermore, when the exhaust gas purification tower 1 needs cleaning after multiple purification cycles, the hydraulic rod 506 is activated. The output end of the hydraulic rod 506 drives the ring 507 downwards, which in turn drives the push rod 508 downwards. The push rod 508 then presses down on the convex plate 510, causing it to rotate clockwise. This rotation of the convex plate 510 drives the rotating tube 509, which in turn rotates the outer nozzle 512 and inner nozzle 513 clockwise. This rotation reaches the target angle. At this point, cleaning fluid is introduced into the guide pipe 501, then into the first hose, then into the annular pipe, then into the second hose, and finally into the rotating tube 509. The rotating pipe 509 introduces the cleaning fluid into the outer nozzle 512 and the inner nozzle 513 respectively, thereby cleaning the inside of the exhaust gas purification tower 1 through the outer nozzle 512, and cleaning the conical shroud 503, the first guide plate 504 and the rotating nozzle 502 through the inner nozzle 513. At the same time, the pneumatic piston vibrator 4 is activated, which drives the exhaust gas purification tower 1 to vibrate, thereby causing the two sieve plates 605 near the pneumatic piston vibrator 4 to vibrate, thereby shaking out the dirt inside the first hollow ball 601 and the second hollow ball 603, promoting the mixing of cleaning fluid and dirt. At the same time, the electric push rod 608 is activated, which drives the irregular rod 609 to move downward through the output end of the electric push rod 608. The irregular rod 609 drives the conical brush 610 to move downward through the conical brush 610 to clean the small holes inside the corrugated plate 606.

[0031] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0032] The above are merely preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A waste gas purification tower, characterized in that, include: The exhaust gas purification tower (1) has a circulating pump (2) installed at one bottom side, and a pneumatic piston vibrator (4) installed on one pair of sides. A water tank (3) is installed at the bottom inside the exhaust gas purification tower (1), and the water tank (3) is connected to the inlet of the circulating pump (2). The waste gas purification tower (1) is equipped with a spray assembly (5) inside, which is used to spray the absorbent liquid. A packing assembly (6) is provided below the spray assembly (5), and the packing assembly (6) is used to promote the mixing of waste gas and absorbent liquid; A reflux assembly (7) is provided above the spray assembly (5), and the reflux assembly (7) is used to recover the absorbent liquid in the purified waste gas.

2. The waste gas purification tower according to claim 1, characterized in that, The spray assembly (5) includes a liquid guide pipe (501), which is fixedly connected to the inner wall of the exhaust gas purification tower (1). The liquid guide pipe (501) is connected to the outlet of the circulating pump (2) through a pipe. Several rotating nozzles (502) are connected to the bottom end of the liquid guide pipe (501).

3. The waste gas purification tower according to claim 2, characterized in that, The spray assembly (5) also includes a plurality of conical shrouds (503), which are respectively installed on the top outer wall of the rotating nozzle (502). A first guide plate (504) is fixedly connected to the inner wall of each conical shroud (503), and a fixing ring (505) is fixedly connected to the top outer wall of each rotating nozzle (502). Hydraulic rods (506) are installed on both sides of the bottom end of each fixing ring (505).

4. The waste gas purification tower according to claim 3, characterized in that, The spray assembly (5) also includes several rings (507), each ring (507) is fixedly connected to the output end of two hydraulic rods (506), and each ring (507) is fixedly connected to several push rods (508) at the bottom end.

5. The waste gas purification tower according to claim 4, characterized in that, The spray assembly (5) includes several rotating tubes (509), which are rotatably connected to the bottom of the conical cover (503) via connecting seats. A protruding plate (510) is fixedly connected to one side of the outer wall of each rotating tube (509), and a return spring (511) is fixedly connected to one side of each protruding plate (510). The other end of each return spring (511) is fixedly connected to the connecting seat.

6. The waste gas purification tower according to claim 5, characterized in that, The spray assembly (5) also includes a plurality of outer nozzles (512), which are respectively connected to the inside of one end of the rotating tube (509). The inner wall of the other end of each rotating tube (509) is connected to an inner nozzle (513), and an anti-stick cap (514) is fixedly connected to the outer wall of each inner nozzle (513).

7. The waste gas purification tower according to claim 1, characterized in that, The packing assembly (6) also includes two sieve plates (605), which are fixedly connected to the inner wall of the exhaust gas purification tower (1). The top of the upper sieve plate (605) is provided with a number of first hollow spheres (601), and the outer wall of each first hollow sphere (601) is provided with a number of corrugated windows (602). The top of the lower sieve plate (605) is provided with a number of second hollow spheres (603), and the interior of each second hollow sphere (603) is fixedly connected with a number of spiral guide plates (604).

8. The waste gas purification tower according to claim 7, characterized in that, The packing assembly (6) also includes a shaped mounting base (607), which is fixedly connected to the inner wall of the exhaust gas purification tower (1). Both ends of the shaped mounting base (607) are equipped with electric push rods (608).

9. The waste gas purification tower according to claim 8, characterized in that, The packing assembly (6) also includes a shaped rod (609), which is slidably connected to the inner wall of the shaped mounting base (607). Both ends of the shaped rod (609) are fixedly connected to the output end of the electric push rod (608). Several conical brushes (610) are fixedly connected to the bottom end of the shaped rod (609). A corrugated plate (606) is provided at the bottom end of the shaped mounting base (607), and the corrugated plate (606) is fixedly connected to the inner wall of the exhaust gas purification tower (1).

10. The waste gas purification tower according to claim 1, characterized in that, The reflux assembly (7) also includes a reflux guide plate (701), which is fixedly connected to the inner wall of the exhaust gas purification tower (1). The inner wall of the exhaust gas purification tower (1) is connected to a guide pipe (702), and the other end of the guide pipe (702) is connected to the water tank (3).

Images