A waste gas purification treatment device and process for rubber product production

Abstract

The application relates to the technical field of waste gas treatment, and discloses a waste gas purification treatment device for rubber product production and a process, wherein the waste gas purification treatment device for rubber product production comprises a spraying tower shell, a shunt is arranged below a static filler layer, a motor is arranged on the bottom surface of the shunt, the output end of the motor is downwardly and transmissionally connected with an upper plate, the lower side of the upper plate is fixedly connected with a lower disc, a plurality of centrifugal rings are arranged between the upper plate and the lower disc, a plurality of shunt holes are arranged on the centrifugal rings in an annular and equidistant mode. Under the action of centrifugal force, the washing liquid is uniformly distributed on the inner wall of the centrifugal ring, and when the washing liquid is rapidly rotated, the washing liquid is pulled into an extremely thin liquid film, so that the mass transfer resistance of the gas-liquid film is reduced, the mass transfer efficiency of the gas-liquid is effectively improved, the waste gas can be effectively contacted with the washing liquid for reaction, and the colloidal deposit can be rapidly separated with the aid of the centrifugal force, the plugging risk is reduced, and the stable operation of the device is ensured.

Description

Technical Field

[0001] This invention relates to the field of waste gas treatment technology, and in particular to a waste gas purification and treatment device and process for rubber product manufacturing. Background Technology

[0002] Key processes in rubber product manufacturing, such as mixing, open milling, and vulcanization, generate complex and highly hazardous multiphase industrial waste gases. These gases contain solid and liquid particulate matter such as rubber dust and sticky adhesive mist, as well as odorous gases such as hydrogen sulfide and organic sulfides. They also contain volatile organic compounds, primarily non-methane hydrocarbons. Effectively purifying these waste gases presents a significant challenge for the industry.

[0003] Currently, the industry commonly uses spray towers as the core unit for pretreatment of rubber waste gas, and its core function lies in the internal static packed bed structure. This structure maximizes the contact area between the waste gas and the washing liquid by stacking a large number of packing materials with a large specific surface area inside the tower. Through mass transfer during the gas-liquid contact process, it achieves the adsorption and removal of some pollutants, which is a relatively mature traditional technical solution in industrial waste gas treatment.

[0004] However, this technology suffers from the following drawbacks due to the unique physicochemical properties of rubber waste gas: Firstly, the rubber dust and sticky gum mist in the waste gas have extremely strong adhesion. When they pass through the static packed bed with the airflow, they easily adhere to the surface of the packing material and the intricate internal channels. These sticky substances, when mixed with the washing liquid, form a sludge-like gelatinous deposit. This deposit adheres to the flow channel surface, increasing system air resistance, reducing the equipment's processing airflow, and causing a surge in operating energy consumption. Ultimately, frequent shutdowns for manual cleaning are necessary, resulting in high maintenance costs and severely impacting production continuity. Secondly, the gas-liquid mass transfer process within the static packed bed relies primarily on gravity and natural turbulence. The washing liquid forms a thick liquid film on the packing surface, and the film's renewal rate is slow, directly limiting the gas-liquid mass transfer rate. For pollutants such as hydrophobic organic matter, which are abundant in rubber waste gas, the limited mass transfer efficiency makes effective purification difficult, significantly reducing the overall treatment effect.

[0005] In summary, traditional spray towers with static packed beds as their core have significant shortcomings in terms of anti-clogging reliability and mass transfer efficiency when treating rubber production waste gas with special composition, making it difficult to meet the industry's increasingly stringent environmental protection requirements and high-efficiency production needs. Summary of the Invention

[0006] In view of the existing technical problems that the waste gas from rubber production can easily clog the flow channels of the static packing layer, and that the mass transfer efficiency between the washing liquid and the waste gas is low, a waste gas purification and treatment device for rubber product manufacturing is proposed.

[0007] Its purpose is to set up a dynamic rotating layer so that the washing liquid is evenly distributed on the inner wall of the centrifugal ring, thereby improving the transfer efficiency of waste gas and washing liquid and avoiding flow channel blockage.

[0008] The technical solution of this invention is a waste gas purification and treatment device for rubber product manufacturing, including a spray tower shell, a spraying system installed on the spray tower shell, a static packing layer disposed in the upper part of the spray tower shell, a flow divider fixedly connected to the inner wall of the spray tower shell below the static packing layer, the flow divider being used to guide the waste gas and washing liquid to flow separately, a motor disposed on the bottom surface of the flow divider, the output end of the motor facing downward and being drivenly connected to an upper plate, a lower plate fixedly connected to the lower side of the upper plate, and the lower plate being rotatably connected to the spray tower shell. Multiple centrifugal rings are arranged coaxially between the upper plate and the lower plate, with their diameters increasing sequentially from the inside to the outside. Multiple diversion holes are evenly spaced in a ring on each centrifugal ring. A guide column is fixedly connected to the outer wall of each centrifugal ring near the diversion hole, and the guide column has a guide arc surface near the diversion hole. Multiple drain holes are provided at the edge of the lower plate, and a through hole is provided in the center of the lower plate. The diameter of the through hole is smaller than the diameter of the innermost centrifugal ring. A spray assembly is provided above the through hole, and the spray assembly is connected to a spray system.

[0009] Furthermore, the flow divider includes a flow divider plate with a conical structure, a plurality of air guide pipes are fixedly connected to the flow divider plate, the upper end of the air guide pipes extends upward to the top of the flow divider plate and has a plurality of notches, a conical cover is fixedly connected to the top of the air guide pipes, and a plurality of drain holes are provided at the edge of the flow divider plate.

[0010] Furthermore, a protective shell is fitted around the outside of the motor, and the top surface of the protective shell is connected and fixed to the bottom of the diverter plate.

[0011] Furthermore, an annular support seat is rotatably connected to the bottom surface of the lower plate, and the annular support seat is fixedly installed on the inner wall of the spray tower shell.

[0012] Furthermore, multiple connecting plates are arranged in a ring at equal intervals along the edge of the upper plate. The two ends of the connecting plates are respectively connected and fixed to the upper plate and the lower plate. The bottom surface of the upper plate and the top surface of the lower plate are both provided with annular grooves that are compatible with the centrifugal ring.

[0013] Furthermore, the spray assembly includes an annular pipe located below the through hole, a diversion pipe fixedly connected to the annular pipe, the other end of the diversion pipe passing through the outer shell of the spray tower and connected to the spray system, multiple spray pipes fixedly connected in an annular pattern at equal intervals on the annular pipe, and multiple atomizing nozzles fixedly provided on the side of the spray pipe facing the centrifugal ring; a water-blocking ring fixedly connected to the top surface of the lower plate is provided above the through hole.

[0014] Furthermore, the guide column has a hollow structure, and an air outlet is provided on the side of the guide column away from the guide arc surface. Multiple air collection hoods are provided on the top surface of the upper plate, and a connecting pipe is fixedly connected to the bottom of the air collection hood. The lower end of the connecting pipe passes through the upper plate and is inserted into the top of the corresponding guide column.

[0015] Furthermore, two annular plates are provided below the diversion plate, and multiple inclined plates are fixedly connected between the two annular plates at equal intervals in a ring. The annular plate located on the inner side is rotatably connected to the diversion plate, and the inclined plate is located between the drain hole and the sewage hole.

[0016] Furthermore, the inner wall of the centrifugal ring is provided with multiple spiral guide strips at equal intervals in a ring shape. The cross-section of the spiral guide strip is a right-angled trapezoidal structure, and multiple serrated grooves are opened on the side of the spiral guide strip away from the inclined plane.

[0017] Another objective of this invention is to provide a waste gas purification process for rubber product manufacturing, which aims to enable more effective mass transfer between the waste gas and the washing liquid while avoiding blockage of the flow channel.

[0018] To achieve the above objectives, the present invention provides the following technical solution: a process for purifying and treating waste gas from rubber product manufacturing, comprising the following steps: S1, the waste gas from rubber production enters a dry filter and passes through a three-stage filtration layer of primary, medium, and high efficiency filters to progressively intercept particulate matter of different sizes in the waste gas; S2. The filtered exhaust gas enters the bottom of the spray tower shell. The motor rotates to make the washing liquid adhere to the inner wall of the centrifugal ring. The exhaust gas comes into contact with the washing liquid as it passes from the innermost centrifugal ring to the outermost centrifugal ring, and is cooled, dusted, and deacidified. Then the exhaust gas rises into the static packing layer for further purification. S3. The pretreated exhaust gas enters the zeolite rotor. When the rotor rotates, the zeolite adsorbs a large amount of volatile organic compounds, achieving high-volume, low-concentration exhaust gas concentration. Then, the saturated sector is swept back by high-temperature air, desorbing to form a small-volume, high-concentration exhaust gas, which finally enters the RTO and is oxidized and decomposed into carbon dioxide and water at high temperature. S4. Exhaust gas that passes sensor detection can be discharged.

[0019] Compared with the prior art, the present invention has the following beneficial effects: 1. Through radially distributed multi-layer centrifugal rings, the waste gas enters through the through holes and gradually flows towards the outermost centrifugal ring. Under the action of centrifugal force, the washing liquid is evenly distributed on the inner wall of the centrifugal ring. At the same time, when rotating rapidly, the washing liquid is stretched into an extremely thin liquid film, thereby reducing the gas-liquid film mass transfer resistance. Therefore, it can effectively improve the gas-liquid mass transfer efficiency, realize the effective contact and reaction between the waste gas and the washing liquid, and at the same time, the centrifugal force can quickly separate colloidal deposits, reduce the risk of blockage, and ensure the stable operation of the device.

[0020] 2. The waste gas is reused by combining the gas collection hood with the guide column. The waste gas sprayed by the guide column blows the waste gas between two adjacent centrifugal rings, allowing the waste gas to move along the inner wall of the centrifugal ring. At the same time, the kinetic energy of the washing liquid drives the fan blades to rotate, creating a suction effect. This makes the airflow path smoother and more stable, further optimizing the purification efficiency.

[0021] 3. The spiral guide strip not only provides an upward driving force for the washing liquid, making it more evenly distributed on the inner wall of the centrifugal ring, but its own raised structure can also increase the specific surface area of ​​gas-liquid contact, prolong the contact time between waste gas and washing liquid, and the serrated groove can make the washing liquid form turbulence, destroy the stagnant layer of washing liquid when it flows on the inner wall of the centrifugal ring, expand the effective contact area and contact frequency of the gas and liquid phases, and further improve the mass transfer efficiency. Attached Figure Description

[0022] Figure 1 This is a three-dimensional schematic diagram of the overall structure of the waste gas purification and treatment device for rubber product manufacturing according to the present invention. Figure 2 This is a structurally disassembled schematic diagram of the diversion plate, lower plate, and annular support base of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 3 This is a schematic cross-sectional view of the diversion plate and protective cover structure of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 4 This is a schematic cross-sectional view of the air guide pipe and conical hood structure of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 5 This is a schematic diagram showing the upper plate, centrifugal ring, and lower plate of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 6 This is a schematic diagram of the annular plate and inclined plate structure of the waste gas purification and treatment device for rubber product manufacturing according to the present invention. Figure 7 This is a schematic diagram of the centrifugal ring and guide column structure of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 8 This is a schematic diagram of the spray assembly structure of the waste gas purification and treatment device for rubber product manufacturing according to the present invention. Figure 9 This is a schematic diagram showing the disassembled structure of the guide column and gas collection hood of the waste gas purification and treatment device for rubber product manufacturing of the present invention. Figure 10 The present invention relates to a waste gas purification and treatment device for rubber product manufacturing. Figure 7 Enlarged schematic diagram of the structure at point A in the middle.

[0023] In the picture: 1. Spray tower shell; 2. Spraying system; 3. Static packing layer; 4. Diverter; 41. Diverter plate; 42. Air guide pipe; 43. Conical hood; 44. Drain hole; 5. Motor; 6. Protective shell; 7. Upper plate; 8. Lower plate; 9. Centrifugal ring; 10. Diverter hole; 11. Guide column; 12. Guide arc surface; 13. Connecting plate; 14. Annular groove; 15. Annular support seat; 16. Sewage discharge hole; 17. Water baffle ring; 18. Spray assembly; 181. Annular pipe; 182. Diverter pipe; 183. Spray pipe; 19. Air outlet; 20. Gas collection hood; 21. Connecting pipe; 22. Annular plate; 23. Inclined plate; 24. Spiral guide bar; 25. Serrated groove. Detailed Implementation

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0025] Example 1, referring to Figures 1-7 This is the first embodiment of the present invention, providing a waste gas purification and treatment device for rubber product manufacturing, including a spray tower shell 1, a spray system 2 installed on the spray tower shell 1, a static packing layer 3 disposed in the upper part of the spray tower shell 1, a flow divider 4 fixedly connected to the inner wall of the spray tower shell 1 disposed below the static packing layer 3, the flow divider 4 being used to guide the waste gas and washing liquid to flow separately, a motor 5 disposed on the bottom surface of the flow divider 4, the output end of the motor 5 facing downward and connected to an upper plate 7, a lower plate 8 fixedly connected to the lower side of the upper plate 7, the lower plate 8 being rotatably connected to the spray tower shell 1, and the upper plate 8 being fixedly connected to the lower side of the upper plate 7. Multiple centrifugal rings 9 are arranged coaxially between plate 7 and lower plate 8, with their diameters increasing sequentially from the inside to the outside. Multiple diversion holes 10 are evenly spaced in a ring on the centrifugal rings 9. A guide column 11 is fixedly connected to the outer wall of the centrifugal ring 9 near the diversion hole 10. A guide arc surface 12 is provided on the side of the guide column 11 near the diversion hole 10. Multiple sewage holes 16 are provided at the edge of the lower plate 8. A through hole is provided in the middle of the lower plate 8. The diameter of the through hole is smaller than the diameter of the innermost centrifugal ring 9. A spray assembly 18 is provided above the through hole. The spray assembly 18 is connected to the spray system 2.

[0026] Specifically, the spray assembly 18 sprays washing liquid onto the innermost centrifugal ring 9. The motor 5 drives the upper plate 7, lower plate 8, and centrifugal ring 9 to rotate rapidly. Under the action of centrifugal force, the washing liquid adheres to the inner wall of the centrifugal ring 9 and flows through the diversion hole 10. Guided by the guide arc surface 12, it flows to the inner wall of the adjacent outer centrifugal ring 9 and is eventually evenly distributed on the inner walls of all centrifugal rings 9. Under the action of centrifugal force, the washing liquid is torn into extremely thin liquid films, fine liquid filaments, and micron-sized droplets. The thinner the liquid film, the shorter the diffusion distance of pollutant molecules from the gas phase to the liquid phase and the smaller the resistance. The waste gas from rubber production enters the innermost centrifugal ring 9 through the through hole and gradually flows outward. The gas flows smoothly and comes into full contact with the washing liquid during the flow process. At the same time, the washing liquid is rapidly renewed under the rotating condition, which significantly improves the mass transfer efficiency between the exhaust gas and the washing liquid. The colloidal deposits formed by the mixture of exhaust gas and washing liquid are thrown to the outside layer by layer under the action of centrifugal force, and finally discharged downward through the drain hole 16. The preliminarily purified exhaust gas continues to rise, passes through the diverter 4 and enters the static packing layer 3 for further purification. This device achieves uniform distribution and efficient atomization of the washing liquid through centrifugal force, shortens the mass transfer and diffusion distance of pollutants, improves the exhaust gas purification efficiency, and at the same time, it uses centrifugal force to quickly separate the colloidal deposits, reducing the risk of blockage and ensuring the stable operation of the device.

[0027] This invention optimizes and improves the traditional spray tower structure by eliminating the static packing layer 3 at the bottom of the tower and replacing it with a dynamic centrifugal mass transfer layer. This dynamic centrifugal mass transfer layer, through the high-speed rotation of the rotating structure, significantly reduces gas-liquid film mass transfer resistance and greatly improves gas-liquid mass transfer efficiency. This design not only effectively reduces the overall volume of the tower and the space occupied by the internal purification structure, achieving a compact layout, but also reduces the need for the static packing layer 3, lowering the risk of packing blockage and scaling. Furthermore, it simplifies subsequent disassembly, cleaning, and maintenance processes, significantly reducing the difficulty of equipment maintenance.

[0028] It should be noted that the upper plate 7, lower plate 8, centrifugal ring 9, and guide column 11 are all made of stainless steel, and the surface is coated with PTFE or superhydrophobic nano-coating by plasma spraying to achieve anti-sticking, anti-clogging and improved corrosion resistance.

[0029] Reference Figure 3 , Figure 4 The flow divider 4 includes a flow divider plate 41 with a conical structure. Multiple air guide pipes 42 are fixedly connected to the flow divider plate 41. The upper end of the air guide pipe 42 extends upward to the top of the flow divider plate 41 and has multiple notches. A conical cover 43 is fixedly connected to the top of the air guide pipe 42, and multiple drain holes 44 are opened at the edge of the flow divider plate 41.

[0030] Specifically, the exhaust gas that rises after initial purification by the centrifugal ring 9 is transported upward through the air guide pipe 42 of the diverter 4 and enters the static packing layer 3. The washing liquid discharged after purification in the static packing layer 3 is guided by the inclined surface of the diverter plate 41 and the conical cover 43, and finally flows downward through the drain hole 44 on the edge of the diverter plate 41. This effectively achieves precise diversion of exhaust gas and washing liquid, avoiding the washing liquid from dripping directly onto the top surface of the upper plate 7 and increasing the driving burden on the motor 5. The structural design of the diverter 4 ensures the smoothness of the exhaust gas rising channel and can quickly guide the washing liquid back, reducing ineffective energy consumption.

[0031] Understandably, the multiple air guide pipes 42 and the conical shroud 43 work together to redirect and comb the rising exhaust gas, allowing the exhaust gas to be evenly distributed below the static packing layer 3 and to flow upward smoothly and evenly through the static packing layer 3.

[0032] Reference Figure 3 A protective shell 6 is fitted on the outside of the motor 5, and the top surface of the protective shell 6 is connected and fixed to the bottom of the diverter plate 41.

[0033] Specifically, it can not only effectively prevent the gel-like deposits and impurities in the washing liquid and exhaust gas from directly contacting the motor 5, avoiding corrosion and jamming of the internal parts of the motor 5, but also isolate the motor 5 from the erosion of corrosive gases or tiny particles that may be contained in the exhaust gas. At the same time, it can reduce the impact of airflow on the operational stability of the motor 5, significantly improve the all-round protection effect of the motor 5, and thus ensure the long-term stable operation of the motor 5 and extend its service life.

[0034] Reference Figure 2 The bottom surface of the lower plate 8 is rotatably connected to an annular support seat 15, which is fixedly installed on the inner wall of the spray tower shell 1.

[0035] Specifically, the annular support 15 includes an annular base and a rotating ring. The annular base is fixed to the inner wall of the spray tower shell 1, and the rotating ring is connected and fixed to the bottom surface of the lower plate 8. Multiple rollers are rotatably connected to the top surface of the annular base. An annular rotating groove adapted to the rollers is opened on the bottom surface of the rotating ring. The rotating ring and the rollers cooperate to realize the smooth rotation of the lower plate 8.

[0036] Reference Figure 5 Multiple connecting plates 13 are arranged in a ring at equal intervals at the edge of the upper plate 7. The two ends of the connecting plates 13 are connected and fixed to the upper plate 7 and the lower plate 8 respectively. The bottom surface of the upper plate 7 and the top surface of the lower plate 8 are provided with annular grooves 14 that are compatible with the centrifugal ring 9.

[0037] Specifically, the upper and lower end faces of the centrifugal ring 9 are respectively engaged with the annular grooves 14 corresponding to the upper plate 7 and the lower plate 8, and the upper plate 7 and the lower plate 8 are quickly connected by the connecting plate 13, thereby realizing the rapid assembly of the structure and facilitating subsequent disassembly, maintenance and replacement.

[0038] Reference Figure 5 , Figure 8 The spray assembly 18 includes an annular pipe 181 located below the through hole. A diversion pipe 182 is fixedly connected to the annular pipe 181. The other end of the diversion pipe 182 passes through the outer shell 1 of the spray tower and is connected to the spray system 2. Multiple spray pipes 183 are fixedly connected to the annular pipe 181 at equal intervals. Multiple atomizing nozzles are fixedly provided on the side of the spray pipe 183 facing the centrifugal ring 9. A water-blocking ring 17 is provided above the through hole and is fixedly connected to the top surface of the lower plate 8.

[0039] Specifically, the spray system 2 delivers washing liquid to the distribution pipe 182, distributes the washing liquid evenly to all spray pipes 183 through the ring pipe 181, and sprays it evenly onto the innermost centrifugal ring 9 through the atomizing nozzle.

[0040] Example 2, refer to Figure 2 , Figure 7 , Figure 9 This is the second embodiment of the present invention. The difference between this embodiment and the first embodiment is that the guide column 11 has a cavity structure, and an air outlet 19 is provided on the side of the guide column 11 away from the guide arc surface 12. Multiple air collection hoods 20 are provided on the top surface of the upper plate 7. A connecting pipe 21 is fixedly connected to the bottom of the air collection hood 20. The lower end of the connecting pipe 21 passes through the upper plate 7 and is inserted and connected to the top of the corresponding guide column 11.

[0041] Specifically, the opening of the gas collecting hood 20 faces the rotation direction of the upper plate 7. When the upper plate 7 drives the gas collecting hood 20 and the guide column 11 to rotate synchronously, the gas collecting hood 20 can introduce a portion of the purified waste gas into the guide column 11 and then spray it out directionally through the outlet 19. This airflow can blow the waste gas between two adjacent centrifugal rings 9, which on the one hand promotes the waste gas to flow closely against the inner wall of the centrifugal ring 9, and on the other hand increases the gas pressure in the flow channel and accelerates the airflow speed. Through the dual effect, the mass transfer efficiency of the waste gas and the washing liquid is further improved, and the purification effect is enhanced.

[0042] Reference Figure 2 , Figure 6 Below the diversion plate 41, there are two annular plates 22. Multiple inclined plates 23 are fixedly connected between the two annular plates 22 at equal intervals in a ring. The annular plate 22 located on the inner side is rotatably connected to the diversion plate 41, and the inclined plate 23 is located between the drain hole 44 and the sewage hole 16.

[0043] Specifically, two annular plates 22 and multiple inclined plates 23 cooperate to form a drive fan blade structure. The annular channel formed by the two annular plates 22 corresponds to the drain hole 44 above and the drain hole 16 below. The washing liquid discharged through the static packing layer 3 falls into the annular channel and flows downward along the surface of the inclined plate 23, which will generate an impact force on the inclined plate 23, thereby driving the entire drive fan blade to rotate. During the rotation, an upward suction effect is formed at the outermost centrifugal ring 9, so that a directional and smooth airflow path is constructed between the upper plate 7 and the lower plate 8, which effectively improves the flow efficiency of the exhaust gas. At the same time, the gravitational potential energy of the washing liquid is converted into airflow driving force, which can enhance the gas-liquid contact effect without additional energy consumption, further optimizing the purification efficiency and energy-saving performance of the device.

[0044] It should be noted that a bearing is provided on the inner side of the inner annular plate 22. The upper part of the bearing is connected and fixed to the inner wall of the inner annular plate 22, and the lower part of the bearing is connected and fixed to the bottom surface of the diverter plate 41 through multiple connecting rods. The rest of the structure is the same as that in Embodiment 1.

[0045] Example 3, referring to Figure 7 , Figure 10 This is the third embodiment of the present invention. The difference between this embodiment and the second embodiment is that: the inner wall of the centrifugal ring 9 is provided with a plurality of spiral guide strips 24 at equal intervals in an annular shape. The cross section of the spiral guide strips 24 is a right-angled trapezoidal structure, and a plurality of serrated grooves 25 are provided on the side of the spiral guide strips 24 away from the inclined surface.

[0046] Specifically, the spiral structure of the spiral guide strip 24 can provide an upward guiding force for the washing liquid during rotation, offsetting part of the downward flow tendency caused by centrifugal force, and helping the washing liquid to form a more uniform and longer-lasting liquid film on the inner wall of the centrifugal ring 9, avoiding excessively thick or dry local liquid films. It can also increase the specific surface area of ​​gas-liquid contact through its own protruding structure, prolong the contact time between waste gas and washing liquid, increase the diffusion and reaction opportunities of pollutant molecules, increase the total amount of pollutants removed per unit time, and thus improve the mass transfer efficiency between waste gas and washing liquid.

[0047] Meanwhile, the inclined surface of the spiral guide bar 24 can guide part of the washing liquid to pass laterally through the gap between the guide bars. When the washing liquid flows through the serrated groove 25, it is cut and dispersed into finer droplets by the serrated structure, forming strong turbulence. The instability of the turbulence causes the gas-liquid interface to continuously deform and fluctuate, effectively destroying the stagnant layer formed at the gas-liquid interface, reducing mass transfer resistance, further expanding the effective contact area and contact frequency of the gas and liquid phases, significantly enhancing the mass transfer effect and purification efficiency. At the same time, the fine droplets and turbulence can also enhance the ability to capture fine pollutants in the exhaust gas and improve the purification depth. The rest of the structure is the same as that in Example 2.

[0048] Based on embodiments 1-3, this waste gas purification device for rubber product manufacturing adopts a combined process of "centrifugal atomization pretreatment + static packing deep purification". The core working principle is as follows: Waste gas enters through the lower part of the spray tower shell 1 and enters the device through the central through-hole of the lower plate 8. The spray system 2 sprays washing liquid onto the innermost centrifugal ring 9 through the spray assembly 18. The motor 5 drives the upper plate 7, lower plate 8, and multiple centrifugal rings 9 to rotate at high speed. Under centrifugal force, the washing liquid flows along the inner wall of the centrifugal rings 9, guided by the flow diversion hole 10 and the guide arc surface 12 of the guide column 11, and is evenly distributed on the inner wall of all centrifugal rings 9, atomized into thin liquid films, liquid filaments, and micro-droplets. During the flow of waste gas from the inside to the outside, it comes into full contact with the highly efficient atomized washing liquid, and pollutants quickly diffuse from the gas phase to the liquid phase. The colloidal deposits are thrown to the outside under centrifugal force and discharged through the drain hole 16, completing the initial purification. After initial purification, the exhaust gas is re-guided evenly by the diverter 4 and then enters the static packing layer 3 for further purification.

[0049] Example 4, refer to Figures 1-10 The fourth embodiment of the present invention provides a process for purifying waste gas used in the production of rubber products, comprising the following steps: S1. Rubber production waste gas enters the dry filter and passes through three stages of filtration: primary, medium and high efficiency, which intercept particulate matter of different sizes in the waste gas step by step. S2. The filtered exhaust gas enters the bottom of the spray tower shell 1. The motor 5 rotates to make the washing liquid adhere to the inner wall of the centrifugal ring 9. The exhaust gas comes into contact with the washing liquid as it passes through the outermost centrifugal ring 9 from the innermost centrifugal ring 9 to cool down, remove dust and remove acid. Then the exhaust gas rises into the static packing layer 3 for further purification. S3. The pretreated exhaust gas enters the zeolite rotor. When the rotor rotates, the zeolite adsorbs a large amount of volatile organic compounds, achieving high-volume, low-concentration exhaust gas concentration. Then, the saturated sector is swept back by high-temperature air, desorbing to form a small-volume, high-concentration exhaust gas, which finally enters the RTO and is oxidized and decomposed into carbon dioxide and water at high temperature. S4. Exhaust gas that passes sensor detection can be discharged.

[0050] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A waste gas purification and treatment device for rubber product manufacturing, comprising a spray tower shell (1), a spray system (2) installed on the spray tower shell (1), and a static packing layer (3) disposed in the upper part of the inner part of the spray tower shell (1), characterized in that, Below the static packing layer (3), a diverter (4) is fixedly connected to the inner wall of the spray tower shell (1). The diverter (4) is used to guide the waste gas and washing liquid to flow separately. A motor (5) is provided on the bottom surface of the diverter (4). The output end of the motor (5) is downward and connected to the upper plate (7). A lower plate (8) is fixedly connected to the lower side of the upper plate (7). The lower plate (8) is rotatably connected to the spray tower shell (1). Multiple centrifugal rings (9) are provided between the upper plate (7) and the lower plate (8). The multiple centrifugal rings (9) are arranged coaxially and their diameters increase from the inside to the outside. Multiple diverter holes (10) are opened in a ring at equal intervals on the centrifugal rings (9). A guide column (11) is fixedly connected to the side of the outer wall of the centrifugal ring (9) near the diverter hole (10). A guide arc surface (12) is provided on the side of the guide column (11) near the diverter hole (10). Multiple drain holes (16) are provided at the edge of the lower plate (8). A through hole is provided in the middle of the lower plate (8). The diameter of the through hole is smaller than the diameter of the innermost centrifugal ring (9). A spray assembly (18) is provided above the through hole. The spray assembly (18) is connected to the spray system (2).

2. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, The diverter (4) includes a diverter plate (41) with a conical structure. Multiple air guide pipes (42) are fixedly connected to the diverter plate (41). The upper end of the air guide pipe (42) extends upward to the top of the diverter plate (41) and has multiple notches. A conical cover (43) is fixedly connected to the top of the air guide pipe (42), and multiple drain holes (44) are opened at the edge of the diverter plate (41).

3. The waste gas purification and treatment device for rubber product manufacturing according to claim 2, characterized in that, The motor (5) is fitted with a protective shell (6) on its outer side, and the top surface of the protective shell (6) is connected and fixed to the bottom of the diverter plate (41).

4. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, The bottom surface of the lower plate (8) is rotatably connected to an annular support seat (15), which is fixedly installed on the inner wall of the spray tower shell (1).

5. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, Multiple connecting plates (13) are arranged in a ring at equal intervals at the edge of the upper plate (7). The two ends of the connecting plates (13) are connected and fixed to the upper plate (7) and the lower plate (8) respectively. The bottom surface of the upper plate (7) and the top surface of the lower plate (8) are provided with annular grooves (14) that are compatible with the centrifugal ring (9).

6. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, The spray assembly (18) includes an annular pipe (181) located below the through hole. A diversion pipe (182) is fixedly connected to the annular pipe (181). The other end of the diversion pipe (182) passes through the outer shell (1) of the spray tower and is connected to the spray system (2). Multiple spray pipes (183) are fixedly connected to the annular pipe (181) at equal intervals. Multiple atomizing nozzles are fixedly provided on the side of the spray pipe (183) facing the centrifugal ring (9). A water-blocking ring (17) is fixedly connected to the top surface of the lower plate (8) above the through hole.

7. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, The guide column (11) has a hollow structure. An air outlet (19) is provided on the side of the guide column (11) away from the guide arc surface (12). Multiple air collection hoods (20) are provided on the top surface of the upper plate (7). A connecting pipe (21) is fixedly connected to the bottom of the air collection hood (20). The lower end of the connecting pipe (21) passes through the upper plate (7) and is inserted into the top of the corresponding guide column (11).

8. The waste gas purification and treatment device for rubber product manufacturing according to claim 2, characterized in that, Two annular plates (22) are provided below the diversion plate (41). Multiple inclined plates (23) are fixedly connected between the two annular plates (22) at equal intervals in a ring. The annular plate (22) located on the inner side is rotatably connected to the diversion plate (41), and the inclined plate (23) is located between the drain hole (44) and the sewage hole (16).

9. The waste gas purification and treatment device for rubber product manufacturing according to claim 1, characterized in that, The centrifugal ring (9) has multiple spiral guide strips (24) arranged in an annular pattern at equal intervals on its inner wall. The cross-section of the spiral guide strip (24) is a right-angled trapezoidal structure, and multiple serrated grooves (25) are opened on the side of the spiral guide strip (24) away from the inclined plane.

10. A process for purifying and treating waste gas from rubber product manufacturing, applied to the waste gas purification and treatment device for rubber product manufacturing as described in claim 1, characterized in that, Includes the following steps: S1. Rubber production waste gas enters the dry filter and passes through three stages of filtration: primary, medium and high efficiency, which intercept particulate matter of different sizes in the waste gas step by step. S2. The filtered exhaust gas enters the bottom of the spray tower shell (1). The motor (5) rotates to make the washing liquid adhere to the inner wall of the centrifugal ring (9). The exhaust gas comes into contact with the washing liquid as it passes through the outermost centrifugal ring (9) from the innermost centrifugal ring (9) to cool down, remove dust and remove acid. Then the exhaust gas rises into the static packing layer (3) for further purification. S3. The pretreated exhaust gas enters the zeolite rotor. When the rotor rotates, the zeolite adsorbs a large amount of volatile organic compounds, achieving high-volume, low-concentration exhaust gas concentration. Then, the saturated sector is swept back by high-temperature air, desorbing to form a small-volume, high-concentration exhaust gas, which finally enters the RTO and is oxidized and decomposed into carbon dioxide and water at high temperature. S4. Exhaust gas that passes sensor detection can be discharged.

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