A highly efficient PVC drying tail gas purification system

Abstract

The present invention discloses a high-efficiency PVC drying tail gas purification system, which relates to the technical field of PVC tail gas treatment. A central treatment tower is welded on the top of the mounting base, a top exhaust pipe is fixedly connected to the middle of the top of the central treatment tower, an air intake connecting pipe is arranged on the bottom of one side of the central treatment tower, one end of the air intake connecting pipe is connected to an air distribution cross pipe, and the outer side of the air distribution cross pipe is connected to an air distribution angle box. The present invention optimizes the adsorption and purification process of PVC tail gas through the mutual cooperation between the components inside the lower layer circulating continuous adsorption mechanism, and through the structural design of the driving mesh belt and the activated carbon adsorption plate that can circulate, the harmful components inside the PVC tail gas are continuously adsorbed by the activated carbon adsorption plate, and the activated carbon adsorption plate and the PVC tail gas are relatively moved during the adsorption process, while the flow path of the PVC tail gas is increased, the contact area between the PVC tail gas and the activated carbon adsorption plate is increased, thereby effectively improving the treatment effect and treatment efficiency of the purification system.

Description

Technical Field

[0001] The invention relates to the technical field of PVC tail gas treatment, in particular to a high-efficiency PVC drying tail gas purification system. Background Art

[0002] Polyvinyl chloride, commonly known as PVC, is one of the thermoplastic synthetic materials with the largest production volume and the widest application range in the world today. During the heating process of PVC, due to high temperature and oxidation, some plasticizer smoke and low-boiling organic matter will be volatilized and escaped, which is what we call plastic waste gas. With the continuous improvement of PVC plastic processing technology, its production enterprises are gradually developing towards high speed, large-scale and continuous production. The centralized discharge of a large amount of plastic processing waste gas has led to increasingly severe environmental pollution. In the process of PVC tail gas treatment, a tail gas purification system is needed. For this reason, a Chinese patent discloses a production method. The tail gas treatment system of PVC, application number is (201811244980.4). The overall structural design of the system of this patent is ingenious, the structure is reasonable and stable, the equipment has a long service life, simple and convenient maintenance, and the treatment effect is stable. The exhaust gas discharged from the PVC production line is collected through the tail gas collection pipeline and then transported to the No. 1 spray absorption tower and the No. 2 spray absorption tower in turn for spray absorption and filtration treatment. The spray liquid in the tower can remove pollutants in the exhaust gas at a rate of more than 90%, with good treatment effect and high exhaust gas purification efficiency. After treatment, the content of various pollutants in the exhaust gas reaching the exhaust gas collection device meets the emission standards;

[0003] However, the current exhaust gas purification system lacks corresponding auxiliary circulation components, which causes the activated carbon adsorption performance to continue to decline during the continuous treatment of the exhaust gas by the purification system. If the corresponding adsorption components are not replaced in time, the exhaust gas cannot be effectively treated, thereby reducing the treatment effect of the treatment system. Replacing and cleaning the adsorption components will take a lot of time, thereby reducing the convenience and efficiency of the exhaust gas purification system. Summary of the invention

[0004] The present invention provides a high-efficiency PVC drying tail gas purification system, which can effectively solve the problem raised in the above background technology that the current tail gas purification system lacks corresponding auxiliary circulation components, so that the activated carbon adsorption performance of the purification system will continue to decline during the continuous treatment of the tail gas. If the corresponding adsorption components are not replaced in time, the tail gas cannot be effectively treated, thereby reducing the treatment effect of the treatment system, and it will take a lot of time to replace and clean the adsorption components, thereby reducing the convenience and efficiency of the use of the tail gas purification system.

[0005] To achieve the above object, the present invention provides the following technical solution: an efficient PVC drying tail gas purification system, comprising a mounting frame, a central processing tower is welded on the top of the mounting frame, and a top exhaust pipe is fixedly connected to the middle of the top of the central processing tower;

[0006] The central treatment tower is provided with a lower-layer circulating continuous adsorption mechanism, which is used to continuously adsorb the PVC tail gas entering the central treatment tower, and continuously circulate and clean the adsorption components during the adsorption process, so as to achieve continuous and effective treatment of the exhaust gas inside the central treatment tower;

[0007] The lower layer circulation continuous adsorption mechanism includes an air intake connecting pipe;

[0008] An air intake connecting pipe is arranged at the bottom of one side of the central treatment tower, one end of the air intake connecting pipe is connected to an air distribution transverse pipe, the outer side of the air distribution transverse pipe is connected to an air distribution angle box, the bottom of the air distribution angle box is fixedly connected to a mounting base plate, and the top of the mounting base plate is fixedly connected to isolation vertical plates at positions corresponding to the two ends of the air distribution angle box;

[0009] A driving top shaft is installed at the middle of the top of the air distribution angle box, a limited angle shaft is installed at the bottom of the air distribution angle box, the driving top shaft and the limited angle shaft are covered with a driving mesh belt on the outside, an activated carbon adsorption plate is installed on the outside of the driving mesh belt, a cleaning brush is bonded to one end of the activated carbon adsorption plate, exhaust bottom grooves are evenly opened at the bottom of the vertical side of the air distribution angle box, and isolation strips are bonded to the vertical side of the air distribution angle box;

[0010] One end of the central air return pipe is connected to an air intake end pipe, the end of the air intake end pipe is connected to a cooling flat box corresponding to the bottom of the mounting base plate, one end of the cooling flat box is connected to a suction top pipe, and the end of the suction top pipe is connected to a collecting inclined box;

[0011] An infusion connecting tube is provided at the bottom of the other side of the central processing tower, one end of the infusion connecting tube is connected to an infusion elbow, the end of the infusion elbow is connected to a driving round box, a driving round paddle is installed inside the driving round box, the bottom of the driving round paddle is connected to a liquid separation elbow, the end of the liquid separation elbow is connected to a heat exchange grid box, one end of the bottom of the heat exchange grid box is fixedly connected to a drainage conduit, and the end of the drainage conduit is connected to a drainage elbow box;

[0012] A long collecting box is embedded and installed in the middle of the bottom surface of the installation base plate, and a protective net is embedded and installed in the middle of the top of the long collecting box. A drainage inclined pipe is fixedly connected to an inclined surface on one side of the bottom of the long collecting box.

[0013] Preferably, an exhaust end box is fixedly connected to the end of the air distribution cross pipe at a position corresponding to the internal position of the air distribution angle box, an air discharge side groove is evenly penetrated and opened on one side of the air distribution cross pipe in the circumferential direction, a central air return pipe is fixedly installed inside the air distribution cross pipe corresponding to the internal area of ​​the air distribution angle box, a rotating inner shaft is rotatably installed at the middle position of the inner side of the central air return pipe through a mounting frame, a driving blade is fixedly installed on one side of the rotating inner shaft at a cavity corresponding to the central air return pipe and the air distribution cross pipe, and air guide blades are evenly and equidistantly sleeved on the outer side of the rotating inner shaft at a position corresponding to the internal position of the central air return pipe;

[0014] An inner blowing tube is fixedly connected to one end of the outer top of the rotating inner shaft close to the driving blade, and an air distribution flat box is fixedly connected to the end of the inner blowing tube at a position corresponding to the oblique side of the air distribution angle box, and a blowing flat box is fixedly connected to one side of the air distribution flat box at a position corresponding to the oblique side of the air distribution angle box through a pipeline, and an air distribution mesh plate is embedded in one side of the blowing flat box.

[0015] Preferably, the end of the air intake connecting pipe is fixedly connected to the external air supply pipe, and the air intake connecting pipe passes through the wall of the central processing tower. The outer sides of the driving top shaft and the limiting angle shaft are tightly fitted with the inner side of the driving mesh belt, and ventilation slots are evenly opened on the outer side of the driving mesh belt.

[0016] Preferably, the exhaust bottom groove and the ventilation slot holes on the side of the driving mesh belt correspond to each other, a group of the isolation rubber strips has three in total, and the side surfaces of the isolation rubber strips are tightly slidably fitted against the inner wall of the driving mesh belt.

[0017] Preferably, exhaust slots are evenly opened on the end face and the oblique side face of the exhaust end box, the air release side slot faces the oblique side face of the air distribution corner box, the blowing flat box is embedded in the oblique side face of the air distribution corner box, and the back face of the blowing flat box is flush with the inner wall of the air distribution corner box.

[0018] Preferably, heat dissipation fins are evenly and equidistantly fixedly connected to the bottom of one side of the cooling flat box, the bottom slope of the collecting inclined box is flush with the slope of the air distribution angle box, and a protective net is embedded in the bottom slope of the collecting inclined box.

[0019] Preferably, the end of the infusion tube is connected to the external liquid supply pipeline, the end of the driving circular paddle center axis is fixedly connected to the end of the driving top axis, the middle side of the heat exchange grid box is embedded in the blowing flat box, the side of the drainage bend box is evenly provided with drainage grooves, and the arc surface of the side of the drainage bend box corresponds to the arc surface of the bottom of the driving mesh belt, and the two sides of the top of the collecting long box are connected to the inner cavity of the cooling flat box.

[0020] Preferably, an upper rotary spray scrubbing mechanism is provided at the top of the inner side of the central treatment tower, and the upper rotary spray scrubbing mechanism reacts and absorbs the residual components in the tail gas by continuously spraying the scrubbing liquid, and flushes the inner wall of the central treatment tower during the spraying process;

[0021] The upper rotary spray scrubbing mechanism comprises a guide top plate;

[0022] A guide top plate is fixedly installed at the top position of the isolation vertical plate inside the central treatment tower, an exhaust rectangular groove is opened through the middle of the inner side of the guide top plate, protective arc nets are embedded and installed on both sides of the top of the guide top plate, and a guide cone top is fixedly connected at the middle of the top of the guide top plate corresponding to the top position of the exhaust rectangular groove;

[0023] A mounting cross is fixedly installed on the top of the inner side of the central processing tower, a liquid inlet transverse pipe is fixedly installed at a position corresponding to the top of the mounting cross on one side of the central processing tower, a mounting round box is fixedly connected to the end of the liquid inlet transverse pipe at a position corresponding to the top of the mounting cross, a connecting rotating box is rotatably connected to the middle of the bottom end of the mounting round box at a position corresponding to the top of the mounting cross through a pipeline, a spray vertical pipe is fixedly connected to the middle of the bottom end of the connecting rotating box, a mounting grid is fixedly installed on the top and bottom of the outer side of the spray vertical pipe, and an atomizing nozzle is evenly fixedly connected to the bottom surface of the mounting grid along the circumferential direction;

[0024] The top and bottom of the outer side of the spray vertical pipe are both sleeved with mounting rotating boxes, and a spray inclined pipe is installed obliquely along the circumferential direction on the outer side of the mounting rotating box. The ends of the two spray inclined pipes are commonly fixedly connected to the spray vertical box, and a water curtain nozzle is evenly and equidistantly fixedly connected to the middle of one side of the spray vertical box, and a drainage bottom pipe is fixedly connected to the middle of the bottom surface of the central treatment tower.

[0025] Preferably, a conical surface is provided on the top of the guide top plate, and an arc-shaped notch is provided through the top of the installation bottom plate at a position corresponding to the bottom of the protective arc-shaped net.

[0026] Preferably, the end face of the water curtain nozzle faces the inner wall of the central treatment tower, and the water curtain nozzle can drive the spray vertical pipe to rotate.

[0027] Compared with the prior art, the present invention has the following beneficial effects: the present invention has a scientific and reasonable structure and is safe and convenient to use:

[0028] 1. A lower-layer circulating continuous adsorption mechanism is set up. Through the mutual cooperation between the internal components of the lower-layer circulating continuous adsorption mechanism, the adsorption and purification process of PVC tail gas is optimized. Through the structural design of the cyclically movable driving mesh belt and the activated carbon adsorption plate, the air intake connecting pipe and the liquid infusion connecting pipe are coordinated to continuously transport PVC tail gas and scrubbing liquid to the bottom of the central treatment tower, and a local continuous circulating airflow is generated in the lower layer of the central treatment tower, and then the harmful components in the PVC tail gas are continuously adsorbed by the activated carbon adsorption plate. In the process of adsorption, the activated carbon adsorption plate and the PVC tail gas are relatively moved, which increases the flow path of the PVC tail gas and increases the contact area between the PVC tail gas and the activated carbon adsorption plate, thereby effectively improving the treatment effect and efficiency of the purification system;

[0029] At the same time, the continuously flowing scrubbing liquid inside the driving round box can drive the driving mesh belt and the activated carbon adsorption plate to move actively, and during the movement of the activated carbon adsorption plate, the continuously flowing scrubbing liquid can be generated through the drainage bent box to continuously wash the outer side of the activated carbon adsorption plate, and the two groups of activated carbon adsorption plates can be scraped against each other by the cleaning fine brush when they are separated at the corner, so as to accelerate the shedding and diversion of harmful components adsorbed on the outer side of the activated carbon adsorption plate, so that the harmful components just adsorbed by the activated carbon adsorption plate are integrated into the scrubbing liquid and taken away, so as to realize the cleaning of the activated carbon adsorption plate, and dry and clean the activated carbon adsorption plate during the subsequent movement, so that the activated carbon adsorption plate can restore its normal adsorption capacity, thereby effectively avoiding the phenomenon of decreased adsorption capacity of the purification system after long-term use, and improving the convenience of maintenance and cleaning of the purification system and the service life of the purification system;

[0030] And the components in the purification system are driven by the flowing scrubbing liquid and the continuously output exhaust gas, so that the conveying process of the scrubbing liquid and the movement process of the activated carbon adsorption plate are carried out synchronously, which not only effectively avoids the waste of the scrubbing liquid in the washing process, but also effectively improves the flushing effect of the scrubbing liquid on the activated carbon adsorption plate. The components on the central air return pipe are driven by the continuously delivered exhaust gas, and a local circulating airflow is generated at the bottom of the central treatment tower. The circulating airflow is continuously blown to the outside of the activated carbon adsorption plate through the blowing flat box and the air distribution mesh plate to accelerate its drying, thereby ensuring the efficiency of the activated carbon adsorption plate circulation recovery process and effectively improving the stability of the operation of various components inside the purification system.

[0031] Finally, in the process of local airflow circulation, the waste heat in the PVC tail gas can be fully absorbed, thereby effectively improving the drying efficiency of the circulating airflow blowing the activated carbon adsorption plate, and in the process of local airflow circulation, part of the scattered PVC tail gas will be driven to actively blow to the outside of the activated carbon adsorption plate, effectively improving the adsorption range of the activated carbon adsorption plate, and in the process of airflow circulation, the scattered scrubbing liquid will be directed and guided, and the scrubbing liquid will be liquefied and collected through the cooling flat box, thereby making full use of the excess heat and excess kinetic energy of various parts inside the central treatment tower, improving the overall usability of the purification system.

[0032] 2. An upper rotary spray scrubbing mechanism is provided. Through the mutual cooperation between the components inside the upper rotary spray scrubbing mechanism, the treatment process of residual waste gas in PVC tail gas is optimized. Through the mutual cooperation between the installation grid and the atomizing nozzle, a continuous and dense water mist is generated inside the central treatment tower, which effectively increases the contact surface area between the spray liquid and the tail gas, ensuring that the residual harmful components in the tail gas can fully react with the spray liquid, thereby effectively improving the treatment effect of the purification system on the waste gas, thereby effectively avoiding the purification system from discharging some untreated harmful components into the air, and improving the overall environmental protection of the purification system. At the same time, the vertical water curtain generated by the spraying vertical box and the water curtain nozzle further increases the contact area between the spray liquid and the tail gas, further improving the treatment effect of the spray liquid on the tail gas. At the same time, the inner wall of the central treatment tower can be flushed by the vertical water curtain, effectively avoiding the reactants from adhering to the inner wall of the central treatment tower, and improving the cleanliness inside the central treatment tower;

[0033] At the same time, the top of the exhaust rectangular groove can be isolated through the guide cone top, and the dripping spray liquid can be guided by the guide top plate, thereby achieving effective isolation of the upper and lower layers of the central treatment tower, so that the central treatment tower will not guide the lower adsorption components during the spraying process, thereby effectively improving the exhaust treatment effect of the purification system.

[0034] In summary, through the mutual cooperation between the internal components of the lower-layer circulating continuous adsorption mechanism and the upper-layer rotating spray washing mechanism, the main harmful components in the PVC tail gas can be adsorbed and collected at the lower layer through the continuously moving activated carbon adsorption plate, and then the tail gas with a small amount of harmful components remaining after adsorption is washed by spraying, thereby effectively improving the overall treatment effect of the purification system on the tail gas and effectively improving the environmental protection of the purification system. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0036] In the attached picture:

[0037] Figure 1 It is a schematic diagram of the structure of the present invention;

[0038] Figure 2 It is a schematic diagram of the structure inside the central treatment tower of the present invention;

[0039] Figure 3 It is a structural schematic diagram of the lower layer circulation continuous adsorption mechanism of the present invention;

[0040] Figure 4 It is a structural schematic diagram of the installation of the air distribution corner box of the present invention;

[0041] Figure 5 It is a structural schematic diagram of the installation of the collecting inclined box of the present invention;

[0042] Figure 6 It is a structural schematic diagram of the installation of the heat exchange grid box of the present invention;

[0043] Figure 7 It is a structural schematic diagram of the installation of the drain bend box of the present invention;

[0044] Figure 8 This is a schematic diagram of the structure of the installation of the isolation rubber strip of the present invention;

[0045] Fig. 9 This is a schematic diagram of the structure inside the gas distribution transverse pipe of the present invention;

[0046] Fig.10 is a path diagram of the activated carbon adsorption plate of the present invention;

[0047] Fig.11 It is a structural schematic diagram of the upper layer rotary spraying and washing mechanism of the present invention;

[0048] Fig.12 It is a structural schematic diagram of the installation of the grid frame of the present invention;

[0049] Numbers in the figure: 1, installation base; 2, central treatment tower; 3, top exhaust pipe;

[0050] 4. Continuous adsorption mechanism for lower circulation; 401. Air intake connecting pipe; 402. Air distribution horizontal pipe; 403. Air distribution angle box; 404. Install bottom plate; 405. Isolation vertical plate; 406. Driving top shaft; 407. Limiting angle shaft; 408. Driving mesh belt; 409. Activated carbon adsorption plate; 410. Cleaning fine brush; 411. Exhaust bottom groove; 412. Isolation rubber strip; 413. Exhaust end box; 414. Discharge side groove; 415. Center return air pipe; 416. Rotating inner shaft; 417. Driving blade; 4 18. Wind guide blade; 419. Blowing inner tube; 420. Air distribution flat box; 421. Blowing flat box; 422. Air distribution mesh plate; 423. Suction end tube; 424. Cooling flat box; 425. Suction top tube; 426. Collecting inclined box; 427. Infusion connecting tube; 428. Infusion elbow; 429. Driving round box; 430. Driving round paddle; 431. Liquid separation elbow; 432. Heat exchange grid box; 433. Drainage conduit; 434. Drainage elbow box; 435. Collecting long box; 436. Drainage inclined tube;

[0051] 5. Upper rotary spray and gas washing mechanism; 501. Guide top plate; 502. Exhaust rectangular groove; 503. Protective arc net; 504. Guide cone top; 505. Install cross; 506. Liquid inlet horizontal pipe; 507. Install round box; 508. Connect rotating box; 509. Spray vertical pipe; 510. Install grid; 511. Atomizing nozzle; 512. Install rotating box; 513. Spray oblique pipe; 514. Spray vertical box; 515. Water curtain nozzle; 516. Drain bottom pipe. DETAILED DESCRIPTION

[0052] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0053] Example: Figure 1-12 As shown, the present invention provides a technical solution, a high-efficiency PVC drying tail gas purification system, including a mounting base 1, a central processing tower 2 is welded on the top of the mounting base 1, and a top exhaust pipe 3 is fixedly connected to the middle of the top of the central processing tower 2;

[0054] A lower-layer circulating continuous adsorption mechanism 4 is provided inside the central treatment tower 2. The lower-layer circulating continuous adsorption mechanism 4 is used to continuously adsorb the PVC tail gas entering the central treatment tower 2, and continuously circulate and clean the adsorption components during the adsorption process, so as to achieve continuous and effective treatment of the exhaust gas inside the central treatment tower 2;

[0055] The lower layer circulation continuous adsorption mechanism 4 includes an air intake connecting pipe 401, an air distribution horizontal pipe 402, an air distribution angle box 403, an installation bottom plate 404, an isolation vertical plate 405, a driving top shaft 406, a limiting angle shaft 407, a driving mesh belt 408, an activated carbon adsorption plate 409, a cleaning fine brush 410, an exhaust bottom groove 411, an isolation rubber strip 412, an exhaust end box 413, a deflated side groove 414, a central air return pipe 415, a rotating inner shaft 416, a driving blade 417, Air guide blades 418, blowing inner tube 419, air distribution flat box 420, blowing flat box 421, air distribution mesh plate 422, suction end tube 423, cooling flat box 424, suction top tube 425, collecting inclined box 426, infusion connecting tube 427, infusion elbow 428, driving round box 429, driving round paddle 430, liquid separation elbow 431, heat exchange grid box 432, drainage conduit 433, drainage elbow box 434, collecting long box 435 and drainage inclined tube 436;

[0056] An air inlet connecting pipe 401 is provided at the bottom of one side of the central treatment tower 2, and air distribution cross pipes 402 are fixedly connected at both sides of one end of the air inlet connecting pipe 401 corresponding to the internal position of the central treatment tower 2, and an air distribution angle box 403 is fixedly connected at the outer side of the air distribution cross pipe 402 corresponding to the inner bottom position of the central treatment tower 2, and a mounting base plate 404 is fixedly connected to the bottom of the air distribution angle box 403, and an isolation vertical plate 405 is fixedly connected to the top of the mounting base plate 404 corresponding to the two ends of the air distribution angle box 403;

[0057] A driving top shaft 406 is rotatably mounted on the middle of the top of the gas distribution angle box 403 through a mounting seat, and a limited angle shaft 407 is rotatably mounted on both corners of the bottom of the gas distribution angle box 403 through a mounting seat. The driving top shaft 406 and the limited angle shaft 407 are both covered with a driving mesh belt 408 on the outside. The end of the air intake connecting pipe 401 is fixedly connected to the external air supply pipe, and the air intake connecting pipe 401 passes through the tower wall of the central treatment tower 2. The outside of the driving top shaft 406 and the limited angle shaft 407 are tightly fitted with the inside of the driving mesh belt 408, and ventilation slots are evenly opened on the outside of the driving mesh belt 408.

[0058] An activated carbon adsorption plate 409 is fixedly installed on the outside of the driving mesh belt 408 through a card slot, and cleaning brushes 410 are bonded to both corners of one end of the activated carbon adsorption plate 409. Exhaust bottom grooves 411 are evenly opened at the bottom of the vertical side of the air distribution angle box 403. Isolation rubber strips 412 are evenly bonded at equal distances at the top of the exhaust bottom grooves 411 on the vertical side of the air distribution angle box 403. The exhaust bottom grooves 411 correspond to the ventilation slots on the side of the driving mesh belt 408. There are three isolation rubber strips 412 in a group, and the side of the isolation rubber strips 412 is tightly slidably fitted with the inner wall of the driving mesh belt 408.

[0059] An exhaust end box 413 is fixedly connected to the end of the air distribution cross pipe 402 at a position corresponding to the inner position of the air distribution angle box 403, and a gas discharge side groove 414 is evenly penetrated and opened on one side of the air distribution cross pipe 402 along the circumferential direction. A central air return pipe 415 is fixedly installed in the air distribution cross pipe 402 corresponding to the inner area of ​​the air distribution angle box 403. A rotating inner shaft 416 is rotatably installed at the middle position of the inner side of the central air return pipe 415 through a mounting frame. A driving blade 417 is fixedly installed at one side of the rotating inner shaft 416 at a cavity corresponding to the central air return pipe 415 and the air distribution cross pipe 402, and a wind guide blade 418 is evenly and equidistantly sleeved on the outer side of the rotating inner shaft 416 at a position corresponding to the inner position of the central air return pipe 415.

[0060] An end of the outer top of the rotating inner shaft 416 close to the driving blade 417 is fixedly connected with a blowing inner tube 419, and an air distribution flat box 420 is fixedly connected to the end of the blowing inner tube 419 corresponding to the oblique side position of the air distribution angle box 403, and a blowing flat box 421 is fixedly connected to one side of the air distribution flat box 420 corresponding to the oblique side position of the air distribution angle box 403 through a pipeline, and an air distribution mesh plate 422 is embedded and installed on one side of the blowing flat box 421, and exhaust notches are evenly opened on the end face and the oblique side face of the exhaust end box 413, and the air release side groove 414 faces the oblique side face of the air distribution angle box 403, and the blowing flat box 421 is embedded in the oblique side face of the air distribution angle box 403, and the back side of the blowing flat box 421 is flush with the inner wall of the air distribution angle box 403;

[0061] An air intake end pipe 423 is fixedly connected at a position in the middle of one end of the central air return pipe 415 corresponding to the end of the rotating inner shaft 416, a cooling flat box 424 is fixedly connected at a position on one side of the bottom of the mounting base plate 404 corresponding to the end of the air intake end pipe 423, a suction top pipe 425 is fixedly connected at a position in the middle of one end of the cooling flat box 424, a collecting inclined box 426 is fixedly connected at a position in the end of the suction top pipe 425 corresponding to the top of the isolation vertical plate 405, heat dissipation fins are fixedly connected at equal intervals at the bottom position of one side of the cooling flat box 424, the bottom inclined surface of the collecting inclined box 426 is flush with the inclined surface of the air distribution angle box 403, and a protective net is embedded and installed inside the bottom inclined surface of the collecting inclined box 426;

[0062] An infusion connecting tube 427 is arranged at the bottom of the other side of the central processing tower 2, and an infusion elbow 428 is fixedly connected to the positions on both sides of one end of the infusion connecting tube 427, and a driving round box 429 is fixedly connected to the end of the infusion elbow 428 at a position corresponding to one side of the isolation vertical plate 405, and a driving round paddle 430 is rotatably installed on the middle part of the inner side of the driving round box 429 through a rotating shaft, and a liquid separation elbow 431 is fixedly connected to one side of the bottom of the driving round paddle 430, and a heat exchange grid box 432 is fixedly connected to the end of the liquid separation elbow 431 at a position corresponding to the back of the blowing flat box 421, and a drainage conduit 433 is fixedly connected to one end of the bottom of the heat exchange grid box 432, and a drainage conduit 433 is fixedly connected to the end of the drainage conduit 433 at a position corresponding to the top surface of the installation bottom plate 404.

[0063] A collecting long box 435 is embedded in the middle of the bottom surface of the installation base plate 404, and a protective net is embedded in the middle of the top of the collecting long box 435. A drainage inclined pipe 436 is fixedly connected to the inclined surface of one side of the bottom of the collecting long box 435. The end of the infusion connecting pipe 427 is connected to the external liquid supply pipeline. The end of the central axis of the driving round paddle 430 is fixedly connected to the end of the driving top shaft 406. The side of the middle part of the heat exchange grid box 432 is embedded in the inside of the blowing flat box 421. The side of the drainage bend box 434 is evenly provided with drainage grooves, and the side arc surface of the drainage bend box 434 corresponds to the bottom arc surface of the driving mesh belt 408. The two sides of the top of the collecting long box 435 are connected to the inner cavity of the cooling flat box 424. Through the lower circulation continuous adsorption mechanism 4 The mutual cooperation between them optimizes the adsorption purification process of PVC tail gas. Through the structural design of the cyclically movable driving mesh belt 408 and the activated carbon adsorption plate 409, the air intake connecting pipe 401 and the liquid infusion connecting pipe 427 are cooperated to continuously transport the PVC tail gas and the gas washing liquid to the bottom of the central treatment tower 2, and a local continuous circulating airflow is generated in the lower layer of the central treatment tower 2, and then the harmful components in the PVC tail gas are continuously adsorbed by the activated carbon adsorption plate 409. During the adsorption process, the activated carbon adsorption plate 409 and the PVC tail gas are relatively moved, which increases the flow path of the PVC tail gas and increases the contact area between the PVC tail gas and the activated carbon adsorption plate 409, thereby effectively improving the treatment effect and treatment efficiency of the purification system;

[0064] At the same time, the washing liquid that continuously flows inside the driving round box 429 can drive the driving mesh belt 408 and the activated carbon adsorption plate 409 to actively move, and during the movement of the activated carbon adsorption plate 409, the washing liquid that can continuously flow through the drainage bent box 434 can be used to continuously wash the outer side of the activated carbon adsorption plate 409, so that the harmful components just adsorbed by the activated carbon adsorption plate 409 are integrated into the washing liquid and taken away, so as to achieve the cleaning of the activated carbon adsorption plate 409, and dry and clean the activated carbon adsorption plate 409 during the subsequent movement, so that the activated carbon adsorption plate 409 can restore its normal adsorption capacity, thereby effectively avoiding the phenomenon of decreased adsorption capacity of the purification system after long-term use, and improving the convenience of maintenance and cleaning of the purification system and the service life of the purification system;

[0065] And the components in the purification system are driven by the flowing washing liquid and the continuously output waste gas, so that the conveying process of the washing liquid and the movement process of the activated carbon adsorption plate 409 are carried out synchronously, which not only effectively avoids the waste of the washing liquid in the washing process, but also effectively improves the washing effect of the washing liquid on the activated carbon adsorption plate 409. The components on the central return air pipe 415 are driven by the continuously transported waste gas, and a local circulating airflow is generated at the bottom of the central treatment tower 2. The circulating airflow is continuously blown to the outside of the activated carbon adsorption plate 409 through the blowing flat box 421 and the air distribution mesh plate 422 to accelerate its drying, thereby ensuring the efficiency of the circulation recovery process of the activated carbon adsorption plate 409, and effectively improving the stability of the operation of each component inside the purification system;

[0066] Finally, in the process of local airflow circulation, the residual heat in the PVC tail gas can be fully absorbed, thereby effectively improving the drying efficiency of the circulating airflow blowing the activated carbon adsorption plate 409, and in the process of local airflow circulation, it will also drive part of the scattered PVC tail gas to actively blow to the outside of the activated carbon adsorption plate 409, effectively improving the adsorption range of the activated carbon adsorption plate 409, and in the process of airflow circulation, the scattered scrubbing liquid will be directed and guided, and the scrubbing liquid will be liquefied and collected through the cooling flat box 424, thereby making full use of the excess heat and excess kinetic energy of various parts inside the central treatment tower 2, and improving the overall usability of the purification system;

[0067] An upper rotary spray scrubber 5 is provided at the top of the inner side of the central treatment tower 2. The upper rotary spray scrubber 5 reacts and absorbs the residual components in the tail gas by continuously spraying the scrubbing liquid, and flushes the inner wall of the central treatment tower 2 during the spraying process.

[0068] The upper rotary spray scrubbing mechanism 5 includes a guide top plate 501, an exhaust rectangular groove 502, a protective arc net 503, a guide cone top 504, a mounting cross 505, a liquid inlet horizontal pipe 506, a mounting round box 507, a connecting rotating box 508, a spray vertical pipe 509, a mounting grid 510, an atomizing nozzle 511, a mounting rotating box 512, a spraying inclined pipe 513, a spraying vertical box 514, a water curtain nozzle 515 and a liquid discharge bottom pipe 516;

[0069] A guide top plate 501 is fixedly installed at the top position of the isolation vertical plate 405 inside the central processing tower 2, an exhaust rectangular groove 502 is penetrated through the middle of the inner side of the guide top plate 501, and protective arc nets 503 are embedded and installed on both sides of the top of the guide top plate 501. A guide cone top 504 is fixedly connected at the middle of the top of the guide top plate 501 corresponding to the top position of the exhaust rectangular groove 502, a cone surface is provided on the top of the guide top plate 501, and an arc notch is penetrated through the top of the installation bottom plate 404 corresponding to the bottom position of the protective arc net 503;

[0070] A mounting cross 505 is fixedly installed on the top of the inner side of the central processing tower 2, a liquid inlet transverse pipe 506 is fixedly installed at a position corresponding to the top of the mounting cross 505 on one side of the central processing tower 2, a mounting round box 507 is fixedly connected at the end of the liquid inlet transverse pipe 506 at a position corresponding to the top of the mounting cross 505, a connecting rotating box 508 is rotatably connected to the middle of the bottom end of the mounting round box 507 at a position corresponding to the top of the mounting cross 505 through a pipeline, a spray vertical pipe 509 is fixedly connected to the middle of the bottom end of the connecting rotating box 508, a mounting grid 510 is fixedly installed on the top and bottom of the outer side of the spray vertical pipe 509, and an atomizing nozzle 511 is evenly fixedly connected to the bottom surface of the mounting grid 510 along the circumferential direction;

[0071] The top and bottom of the outer side of the spray vertical pipe 509 are sleeved with an installation rotating box 512, and a spray inclined pipe 513 is installed on the outer side of the installation rotating box 512 along the circumferential direction. The ends of the two spray inclined pipes 513 are fixedly connected to the spray vertical box 514. A water curtain nozzle 515 is evenly and evenly fixedly connected to the middle of one side of the spray vertical box 514. A drainage bottom pipe 516 is fixedly connected to the middle of the bottom surface of the central treatment tower 2. The end face of the water curtain nozzle 515 faces the inner wall of the central treatment tower 2. The water curtain nozzle 515 can drive the spray vertical pipe 509 to rotate. Through the mutual cooperation between the internal components of the upper rotary spray scrubbing mechanism 5, the treatment process of the residual waste gas in the PVC tail gas is optimized. Through the mutual cooperation between the installation grid 510 and the atomizing nozzle 511, in the central treatment tower 2 Continuously dense water mist is generated inside, which effectively increases the contact surface area between the spray liquid and the exhaust gas, ensuring that the residual harmful components in the exhaust gas can fully react with the spray liquid, thereby effectively improving the treatment effect of the purification system on the exhaust gas, thereby effectively avoiding the purification system from discharging some untreated harmful components into the air, and improving the overall environmental protection of the purification system. At the same time, the vertical water curtain generated by the spraying vertical box 514 and the water curtain nozzle 515 further increases the contact area between the spray liquid and the exhaust gas, further improving the treatment effect of the spray liquid on the exhaust gas. At the same time, the inner wall of the central treatment tower 2 can be flushed by the vertical water curtain, effectively avoiding the attachment of reactants to the inner wall of the central treatment tower 2, and improving the cleanliness of the interior of the central treatment tower 2;

[0072] At the same time, the top of the exhaust rectangular groove 502 can be isolated by the guide cone top 504, and the dripping spray liquid can be guided by the guide top plate 501, thereby achieving effective isolation of the upper and lower layers of the central treatment tower 2, so that the central treatment tower 2 will not guide the lower adsorption component during the spraying process, thereby effectively improving the exhaust treatment effect of the purification system.

[0073] Working principle and use process of the present invention: In the process of treating PVC tail gas, the present invention introduces the tail gas to be treated into the interior of the air distribution cross pipe 402 through the air intake connecting pipe 401, and introduces the tail gas to be treated into the interior of the air distribution corner box 403 through the air distribution cross pipe 402, and discharges the tail gas from the bottom of the air distribution corner box 403 through the exhaust bottom groove 411 on the side of the air distribution corner box 403, and makes the tail gas flow from bottom to top along the gap between the two air distribution corner boxes 403, and in the process of the tail gas to be treated flowing from bottom to top, the harmful components in the tail gas are adsorbed by the activated carbon adsorption plate 409, so as to achieve the adsorption of harmful components in the tail gas;

[0074] At the same time, the external washing liquid with a certain pressure is introduced into the infusion elbow 428 through the infusion connecting tube 427, and the washing liquid is introduced into the driving round box 429 through the infusion elbow 428. In the process of the washing liquid flowing through the driving round box 429, the driving round paddle 430 is driven to rotate by the pressure of the washing liquid, and then the driving top shaft 406 is driven to rotate by the rotation of the driving round paddle 430. In the process of the rotation of the driving top shaft 406, the limited angle shaft 407 drives the driving mesh belt 408 to move synchronously, and in the process of the movement of the driving mesh belt 408, the two groups of activated carbon adsorption plates 409 are driven to move synchronously, and then while the exhaust gas to be treated continues to flow from bottom to top, part of the activated carbon adsorption plates 409 are slowly moved from top to bottom in the same area, so as to increase the travel path of the exhaust gas and increase the effective contact area between the activated carbon adsorption plates 409 and the exhaust gas;

[0075] The washing liquid in the driving round box 429 is introduced into the heat exchange grid box 432 through the liquid separation elbow 431, and in the process of the washing liquid flowing along the heat exchange grid box 432, the heat is exchanged with the exhaust gas with residual heat in the air distribution angle box 403 through the heat exchange grid box 432, and the heat is transferred to the inside of the blowing flat box 421 through the heat exchange grid box 432, and then the washing liquid in the heat exchange grid box 432 is introduced into the inside of the drainage elbow box 434 through the drainage pipe 433, and the washing liquid is evenly discharged to the top of the installation base plate 404 through the drainage elbow box 434, and the washing liquid is discharged along the installation base plate 404. During the flow of the top of the bottom plate 404, the outer side of the activated carbon adsorption plate 409 is flushed and cleaned by the gas washing liquid to remove the harmful components adsorbed inside the activated carbon adsorption plate 409, and the harmful components are removed by the flow of the gas washing liquid, so that the activated carbon adsorption plate 409 can restore its original adsorption capacity. At the same time, the corners of the activated carbon adsorption plate 409 are protected by the cleaning fine brush 410, and during the movement and deflection of the activated carbon adsorption plate 409, the side of the adjacent activated carbon adsorption plate 409 is scraped by the cleaning fine brush 410 to assist in cleaning the outer side of the activated carbon adsorption plate 409;

[0076] In addition, in the process of introducing the exhaust gas inside the air distribution cross pipe 402 into the air distribution angle box 403, the exhaust gas moving to the end of the air distribution cross pipe 402 is guided and dispersed through the exhaust end box 413, and in the process of the exhaust gas flowing through the air distribution cross pipe 402, part of the exhaust gas inside the air distribution cross pipe 402 can be blown from the side to the back of the blowing flat box 421 through the exhaust side groove 414, so as to achieve heating of the back of the blowing flat box 421, and the driving blade 417 and the rotating inner shaft 416 are driven to rotate synchronously by the continuously flowing exhaust gas, and the wind guide blade 418 can be driven to rotate synchronously during the rotation of the rotating inner shaft 416, and the wind guide blade 418 is driven to rotate synchronously. The rotation generates a continuous airflow inside the blowing inner tube 419, and the continuous airflow is introduced into the air distribution flat box 420 through the blowing inner tube 419, and then the circulating airflow is introduced into the blowing flat box 421 through the air distribution flat box 420. In the process of the circulating airflow flowing through the blowing flat box 421, the circulating airflow can be heated by the heat exchange grid box 432, and then the hot airflow is blown to the activated carbon adsorption plate 409 passing through the inclined area of ​​the air distribution corner box 403 through the air distribution mesh plate 422, and then the activated carbon adsorption plate 409 is dried by the continuous blowing hot airflow, so that the activated carbon adsorption plate 409 is restored to a dry state, and the circulation of the activated carbon adsorption plate 409 is completed;

[0077] When the air guide blades 418 rotate, the air flow inside the air intake end pipe 423 is sucked, thereby generating a continuous negative pressure inside the cooling flat box 424, the suction top pipe 425 and the collecting inclined box 426. The water vapor blown out from the activated carbon adsorption plate 409 is collected by the collecting inclined box 426, and then the collected water vapor is introduced into the cooling flat box 424 through the suction top pipe 425. In the process of the water vapor flowing through the cooling flat box 424, it is cooled and liquefied. The liquefied washing liquid is returned to the collecting long box 435 through the holes at the bottom of the cooling flat box 424, and is discharged from the central processing tower 2 through the drain inclined pipe 436. The dried air flow is then guided back to the central return air pipe 415 through the air intake end pipe 423, thereby realizing the local circulation of the air flow inside the central processing tower 2.

[0078] After the main harmful components in the PVC tail gas are adsorbed, it is necessary to process the small amount of harmful gas components remaining in the tail gas. The spray liquid is introduced into the installation round box 507 located at the top of the installation cross 505 through the liquid inlet horizontal pipe 506, and the spray liquid in the installation round box 507 is introduced into the spray vertical pipe 509 through the connecting rotating box 508. The spray liquid in the spray vertical pipe 509 is introduced into the atomizing nozzle 511 through the installation grid 510, and then the water is generated in the central treatment tower 2 through the atomizing nozzle 511. The uniformly distributed water mist reacts with the residual harmful components in the rising exhaust gas in the central treatment tower 2 through the dense water mist, and then the spray liquid in the spray vertical pipe 509 is introduced into the spray inclined pipe 513 and the spray vertical box 514 by installing the rotating box 512, and a vertically arranged water curtain is generated in the central treatment tower 2 through the water curtain nozzle 515. The reaction force generated during the spraying process of the water curtain nozzle 515 drives the spray vertical pipe 509 and the components thereon to rotate synchronously, thereby effectively increasing the coverage of the spraying;

[0079] As the spray liquid continues to fall, the PVC tail gas after adsorption in the lower layer is guided upward through the exhaust rectangular groove 502, and the upper and lower spaces of the central treatment tower 2 are separated by the guide top plate 501 and the guide cone top 504 to prevent the falling spray liquid from dripping onto the outside of the activated carbon adsorption plate 409, and then the dripping spray liquid is guided downward through the protective arc net 503, and after the spray liquid flows to the bottom of the central treatment tower 2, the spray liquid at the bottom of the central treatment tower 2 can be discharged through the drainage bottom pipe 516.

[0080] Finally, it should be noted that the above description is only a preferred example of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-efficiency PVC drying tail gas purification system, comprising a mounting frame (1), characterized in that: A central processing tower (2) is welded to the top of the mounting base (1), and a top exhaust pipe (3) is fixedly connected to the middle of the top of the central processing tower (2); The central treatment tower (2) is provided with a lower-layer circulating continuous adsorption mechanism (4) inside, and the lower-layer circulating continuous adsorption mechanism (4) is used to continuously adsorb the PVC tail gas entering the central treatment tower (2), and continuously circulate and clean the adsorption component during the adsorption process, so as to achieve continuous and effective treatment of the exhaust gas inside the central treatment tower (2); The lower layer circulating continuous adsorption mechanism (4) comprises an air intake connecting pipe (401); An air intake connecting pipe (401) is arranged at the bottom of one side of the central treatment tower (2); one end of the air intake connecting pipe (401) is connected to an air distribution cross pipe (402); the outer side of the air distribution cross pipe (402) is connected to an air distribution angle box (403); the bottom of the air distribution angle box (403) is fixedly connected to a mounting base plate (404); and the top of the mounting base plate (404) is fixedly connected to isolation vertical plates (405) at positions corresponding to the two ends of the air distribution angle box (403); A driving top shaft (406) is installed at the middle of the top of the air distribution angle box (403), a limited angle shaft (407) is installed at the bottom of the air distribution angle box (403), the outer sides of the driving top shaft (406) and the limited angle shaft (407) are jointly covered with a driving mesh belt (408), an activated carbon adsorption plate (409) is installed on the outer side of the driving mesh belt (408), a cleaning fine brush (410) is bonded to one end of the activated carbon adsorption plate (409), exhaust bottom grooves (411) are evenly opened at the bottom of the vertical side surface of the air distribution angle box (403), and an isolation rubber strip (412) is bonded to the vertical side surface of the air distribution angle box (403); An exhaust end box (413) is fixedly connected to the end of the air distribution transverse pipe (402) at a position corresponding to the interior of the air distribution angle box (403); a gas discharge side groove (414) is evenly penetrated and opened on one side of the air distribution transverse pipe (402) in a circumferential direction; a central air return pipe (415) is fixedly installed in the interior of the air distribution transverse pipe (402) corresponding to the interior area of ​​the air distribution angle box (403); a rotating inner shaft (416) is rotatably installed at a middle position of the inner side of the central air return pipe (415) via a mounting frame; a driving blade (417) is fixedly installed at one side of the rotating inner shaft (416) at a cavity corresponding to the central air return pipe (415) and the air distribution transverse pipe (402); and air guide blades (418) are evenly sleeved at equal distances on the outer side of the rotating inner shaft (416) at a position corresponding to the interior of the central air return pipe (415); An end of the outer top of the rotating inner shaft (416) close to the driving blade (417) is fixedly connected to a blowing inner tube (419); an end of the blowing inner tube (419) is fixedly connected to an air distribution flat box (420) at a position corresponding to the oblique side of the air distribution angle box (403); a side of the air distribution flat box (420) is fixedly connected to a blowing flat box (421) via a pipeline at a position corresponding to the oblique side of the air distribution angle box (403); and an air distribution mesh plate (422) is embedded and installed on one side of the blowing flat box (421); One end of the central air return pipe (415) is connected to an air intake end pipe (423); the end of the air intake end pipe (423) is connected to a cooling flat box (424) corresponding to the bottom of the mounting base plate (404); one end of the cooling flat box (424) is connected to a suction top pipe (425); the end of the suction top pipe (425) is connected to a collecting inclined box (426); A liquid infusion connecting tube (427) is provided at the bottom of the other side of the central processing tower (2); one end of the liquid infusion connecting tube (427) is connected to a liquid infusion curved tube (428); the end of the liquid infusion curved tube (428) is connected to a driving round box (429); a driving round paddle (430) is installed inside the driving round box (429); the bottom of the driving round paddle (430) is connected to a liquid separation curved tube (431); the end of the liquid separation curved tube (431) is connected to a heat exchange grid box (432); one end of the bottom of the heat exchange grid box (432) is fixedly connected to a liquid drainage conduit (433); the end of the liquid drainage conduit (433) is connected to a liquid drainage curved box (434); A long collecting box (435) is embedded and installed in the middle of the bottom surface of the installation base plate (404), and a protective net is embedded and installed in the middle of the top of the long collecting box (435); and a liquid drainage inclined pipe (436) is fixedly connected to an inclined surface on one side of the bottom of the long collecting box (435); An upper rotary spray scrubbing mechanism (5) is arranged on the inner top of the central treatment tower (2), and the upper rotary spray scrubbing mechanism (5) reacts and absorbs the residual components in the tail gas by continuously spraying scrubbing liquid, and flushes the inner wall of the central treatment tower (2) during the spraying process; The upper rotary spray scrubbing mechanism (5) comprises a guide top plate (501); A guide top plate (501) is fixedly installed at a position corresponding to the top of the isolation vertical plate (405) inside the central treatment tower (2); an exhaust rectangular groove (502) is penetrated through the middle of the inner side of the guide top plate (501); protective arc-shaped nets (503) are embedded and installed on both sides of the top of the guide top plate (501); and a guide cone top (504) is fixedly connected to a position corresponding to the top of the exhaust rectangular groove (502) at the middle of the top of the guide top plate (501); A mounting cross (505) is fixedly installed on the top of the inner side of the central treatment tower (2); a liquid inlet transverse pipe (506) is fixedly installed on a side surface of the central treatment tower (2) at a position corresponding to the top of the mounting cross (505); a mounting round box (507) is fixedly connected to the end of the liquid inlet transverse pipe (506) at a position corresponding to the top of the mounting cross (505); a connecting rotating box (508) is rotatably connected to the middle of the bottom end of the mounting round box (507) at a position corresponding to the top of the mounting cross (505) through a pipeline; a spray vertical pipe (509) is fixedly connected to the middle of the bottom end of the connecting rotating box (508); a mounting grid (510) is fixedly installed on the top and bottom of the outer side of the spray vertical pipe (509); and atomizing nozzles (511) are evenly fixedly connected to the bottom surface of the mounting grid (510) along the circumferential direction. The top and bottom of the outer side of the spray vertical pipe (509) are sleeved with a mounting rotating box (512), and a spraying inclined pipe (513) is installed obliquely along the circumferential direction on the outer side of the mounting rotating box (512), and the ends of the two spraying inclined pipes (513) are fixedly connected to a spraying vertical box (514), and a water curtain nozzle (515) is fixedly connected to the middle of one side of the spraying vertical box (514) at an even distance, and a drainage bottom pipe (516) is fixedly connected to the middle of the bottom surface of the central treatment tower (2).

2. A high-efficiency PVC drying tail gas purification system according to claim 1, characterized in that: The end of the air intake connecting pipe (401) is fixedly connected to the external air supply pipe, and the air intake connecting pipe (401) passes through the tower wall of the central processing tower (2). The outer sides of the driving top shaft (406) and the limiting angle shaft (407) are tightly fitted with the inner side of the driving mesh belt (408), and the outer side of the driving mesh belt (408) is evenly provided with ventilation slots.

3. The high-efficiency PVC drying tail gas purification system according to claim 1 is characterized in that: The exhaust bottom groove (411) and the ventilation groove holes on the side of the driving mesh belt (408) correspond to each other in position, a set of the isolation rubber strips (412) comprises three pieces in total, and the side of the isolation rubber strips (412) is tightly slidably fitted to the inner wall of the driving mesh belt (408).

4. The high-efficiency PVC drying tail gas purification system according to claim 1, characterized in that: The end face and the oblique side face of the exhaust end box (413) are evenly provided with exhaust notches, the exhaust side grooves (414) face the oblique side face of the air distribution corner box (403), the blowing flat box (421) is embedded in the oblique side face of the air distribution corner box (403), and the back face of the blowing flat box (421) is flush with the inner wall of the air distribution corner box (403).

5. The high-efficiency PVC drying tail gas purification system according to claim 1 is characterized in that: Heat dissipation fins are evenly and evenly fixedly connected at the bottom of one side of the cooling flat box (424), the bottom inclined surface of the collecting inclined box (426) is flush with the inclined surface of the air distribution angle box (403), and a protective net is embedded in the bottom inclined surface of the collecting inclined box (426).

6. The high-efficiency PVC drying tail gas purification system according to claim 1 is characterized in that: The end of the infusion tube (427) is connected to the external liquid supply pipeline, the end of the central axis of the driving circular paddle (430) is fixedly connected to the end of the driving top shaft (406), the middle side of the heat exchange grid box (432) is embedded in the blowing flat box (421), the side of the drainage bend box (434) is evenly provided with drainage grooves, and the side arc surface of the drainage bend box (434) corresponds to the bottom arc surface of the driving mesh belt (408), and the top two sides of the collecting long box (435) are connected to the inner cavity of the cooling flat box (424).

7. The high-efficiency PVC drying tail gas purification system according to claim 1 is characterized in that: The top of the guide top plate (501) is provided with a conical surface, and the top of the installation bottom plate (404) is provided with an arc-shaped notch penetrating at a position corresponding to the bottom of the protective arc-shaped net (503).

8. The high-efficiency PVC drying tail gas purification system according to claim 1 is characterized in that: The end face of the water curtain nozzle (515) faces the inner wall of the central processing tower (2), and the water curtain nozzle (515) can drive the spray vertical pipe (509) to rotate.

Images