A waste gas treatment system of an asphalt pre-mixing device

Abstract

The present application provides a kind of waste gas treatment system of asphalt pre-mixing equipment, it is related to industrial waste gas treatment field, including: cyclone separator body, the top of the air outlet cylinder in the middle of cyclone separator body is fixedly connected with adsorption cylinder, the air inlet of one side of cyclone separator body is fixedly connected with corrugated gas guide pipe, and the discharge port of the bottom of cyclone separator body is fixedly installed with dust collection box;Pollution collection component, the pollution collection component includes the pollution collection box that is fixedly connected between cyclone separator body and spray tower;Adsorption component, the adsorption component includes the activated carbon placement box that is arranged in adsorption cylinder interior and is provided with through-hole setting at bottom portion.The linkage mechanism of multiple components: activated carbon replacement process triggers dust collection cavity cleaning, particle dirt collection and spray tower waste liquid collection simultaneously, reduces independent operation step;Pollution collection box is divided into two chambers by partition, respectively collects particle dirt and waste liquid, avoids secondary pollution caused by mixed treatment, and subsequent dirt disposal is more convenient.

Description

A waste gas treatment system for asphalt premixing equipment Technical Field

[0001] This disclosure relates to the field of industrial waste gas treatment technology, and in particular to a waste gas treatment system for an asphalt premixing equipment. Background Technology

[0002] Asphalt premixing equipment generates complex waste gas containing asphalt fumes, volatile organic compounds (VOCs), polycyclic aromatic hydrocarbons, and particulate matter during the production process. If it is discharged directly without effective treatment, it will cause serious pollution to the atmospheric environment, endanger human health, and violate increasingly stringent environmental protection regulations.

[0003] Existing waste gas treatment methods, such as single cyclone separation or activated carbon adsorption, have significant shortcomings: cyclone separation is mainly for large dust particles and has low removal efficiency for fine particles and gaseous pollutants; while activated carbon adsorption units are easily clogged by dust, leading to a rapid decline in adsorption efficiency, increased system resistance, and frequent replacement of activated carbon, resulting in high operation and maintenance costs. In addition, when treating sticky asphalt fumes, spray towers are prone to nozzle clogging and uneven liquid distribution, affecting the purification effect. Summary of the Invention

[0004] This disclosure aims to at least partially address one of the technical problems in the related art.

[0005] Therefore, the purpose of this disclosure is to provide an exhaust gas treatment system for an asphalt premixing equipment.

[0006] To achieve the above objectives, this disclosure provides a waste gas treatment system for an asphalt premixing equipment, comprising: a cyclone separator body, wherein an adsorption cylinder is fixedly connected to the top of the outlet cylinder in the middle of the cyclone separator body, a corrugated air guide pipe with a funnel-shaped inlet end is fixedly connected to the air inlet on one side of the cyclone separator body, and a dust collection box is fixedly installed at the discharge port at the bottom of the cyclone separator body; a spray tower, wherein the spray tower is fixedly installed above the cyclone separator body, the air inlet on one side of the spray tower is connected to the air outlet on one side of the adsorption cylinder through an interface, a diffusion chamber with multiple air outlets at the top is fixedly connected inside the spray tower, and the air inlet of the diffusion chamber is connected to the air inlet on one side of the spray tower; and a sludge collection assembly, wherein the sludge collection assembly is disposed within the cyclone separator body. Between the cyclone separator body and the spray tower, the sludge collection assembly includes a sludge collection box fixedly connected between the cyclone separator body and the spray tower. A partition is fixedly connected inside the sludge collection box, dividing the internal space of the sludge collection box into two chambers. A drain outlet connected to the inside of the adsorption cylinder is fixedly connected to one side of the sludge collection box and communicates with one of the chambers. An adsorption assembly is disposed inside the adsorption cylinder and cooperates with the sludge collection assembly. The adsorption assembly includes an activated carbon placement box disposed inside the adsorption cylinder and having a through hole at the bottom. Two activated carbon placement boxes are arranged symmetrically, one above the other. A connecting frame is fixedly connected between the two activated carbon placement boxes, and space is left between the two activated carbon placement boxes.

[0007] Optionally, a solenoid valve is fixedly connected to the bottom drain port of the diffusion chamber, a first servo motor is fixedly connected to the bottom of the spray tower, the output shaft of the first servo motor passes through the interior of the spray tower and is fixedly connected to a dispersion frame, and a spray ring located above the diffusion chamber is fixedly connected to the inner wall of the spray tower; wherein, the dispersion frame is located above the air outlet at the top of the diffusion chamber and below the spray ring.

[0008] Optionally, a plurality of spray heads arranged in a circular pattern are fixedly connected to the inner side of the spray ring, and a plurality of spirally arranged contact tubes are fixedly connected to the top of the spray ring. The air inlets at the bottom of the plurality of contact tubes are located inside the spray ring, and the air outlets at the top of the plurality of contact tubes are fixedly connected to liquid inlets.

[0009] Optionally, a circulating pump body is fixedly installed on the lower outer side of the spray tower. The inlet of the circulating pump body penetrates into the spray tower and is fixedly connected to its bottom. A delivery pipe is fixedly connected between the outlet of the circulating pump body and the inlet pipe. An injection pipe and a connecting pipe are fixedly connected to the delivery pipe. One end of the connecting pipe penetrates into the spray tower and is fixedly connected to one side of the spray ring and communicates with it.

[0010] Optionally, an exhaust pipe is fixedly connected to the inner wall of the adsorption cylinder, and a dust collection chamber is formed between the outer wall of the exhaust pipe and the inner wall of the middle outlet cylinder of the cyclone separator body. A cleaning ring is slidably fitted onto the inner wall of the dust collection chamber, and a vertical rod is fixedly connected to the upper side of the cleaning ring. A spiral heat exchange tube is fixedly connected to the inner wall of the exhaust pipe, and a heat exchange joint is fixedly connected to the outlet of the spiral heat exchange tube. The exhaust pipe is located at the lower end inside the middle outlet cylinder of the cyclone separator body and is on the same central axis as it. The cleaning ring cooperates with the dirt collection component and the adsorption component.

[0011] Optionally, the top of the exhaust pipe is fixedly connected to a tapered concave opening that gradually narrows upwards, and tapered blocks are fixedly connected to the upper and lower sides of the two activated carbon placement boxes, with the tapered blocks corresponding to the narrowing ends of the tapered concave openings.

[0012] Optionally, a drain groove is provided at the connection between the adsorption cylinder and the drain outlet. An opening and closing block is provided in the drain groove. A vacuum cleaner is fixedly installed on one side of the drain outlet located inside the sludge collection box. An L-shaped linkage rod is fixedly connected to one side of the opening and closing block. The opening of the drain groove is smaller than the opening of the drain outlet. The smaller end of the opening and closing block is smaller than the inner diameter of the drain groove and one end is rounded and located inside the adsorption cylinder. The side of the cleaning ring abuts against one end of the rounded corner of the opening and closing block. The larger end of the opening and closing block is larger than the inner diameter of the drain groove and cooperates with it.

[0013] Optionally, a connecting block is fixedly connected to the periphery of the horizontal rod of the L-shaped linkage rod, and a return spring is fixedly connected between one side of the connecting block and one side of the partition. The horizontal rod of the L-shaped linkage rod is slidably engaged with the partition. A drain hole is provided at the bottom of the spray tower, and a collection pipe located in and connected to the drain hole is fixedly connected to the top of the sludge collection box. The collection pipe is connected to another chamber of the sludge collection box, and the longitudinal rod of the L-shaped linkage rod is located in the other chamber of the sludge collection box. A stop block is fixedly connected to the top of the longitudinal rod of the L-shaped linkage rod, and the stop block is slidably engaged with the connection between the collection pipe and the chamber.

[0014] Optionally, the outer wall of the adsorption cylinder is fixedly connected to an upward-facing fixed frame, the bottom of the fixed frame is fixedly installed with a second servo motor, the output shaft of the second servo motor is fixedly connected to a screw that passes through the fixed frame and is axially arranged, the inner wall of the fixed frame is fitted with a lifting block that slides up and down, and the top of the upright is fixedly connected with a sealing cap; wherein, the screw passes through the lifting block and is threadedly engaged with it, and the sealing cap is located above the top activated carbon placement box and engages with the top opening of the adsorption cylinder.

[0015] Optionally, a third servo motor is fixedly installed on one side of the lifting block, and a rotating rod is fixedly connected to the output shaft of the third servo motor. A through hole is opened on one side of the upright. One end of the rotating rod is fixedly connected to the middle side of the connecting frame, and the rotating rod is rotatably fitted into the inner wall of the through hole.

[0016] The technical solution provided in this disclosure may include the following beneficial effects:

[0017] This invention reduces dust clogging of activated carbon and extends its adsorption life by using cyclone separation for initial dust removal and conical constriction for secondary dust removal. Simultaneously, it combines activated carbon adsorption of organic matter with deep impurity removal via a spray tower, significantly improving the removal rate of various pollutants such as particulate matter and volatile organic compounds. Furthermore, the spray tower's design, including a diffusion chamber, dispersion rack, and spiral contact pipe, avoids the problems of nozzle clogging and uneven liquid distribution common in traditional spray towers, further ensuring purification effectiveness.

[0018] This invention features a multi-component linkage mechanism: the activated carbon replacement process simultaneously triggers the cleaning of the dust collection chamber, the collection of particulate matter, and the collection of waste liquid from the spray tower, reducing independent operation steps; the sludge collection box is divided into two chambers by a partition, which collect particulate matter and waste liquid respectively, avoiding secondary pollution caused by mixed treatment, and making subsequent sludge disposal more convenient; moreover, the structure of each moving part is simple, the difficulty of fault diagnosis and maintenance is low, and the overall service life of the equipment is extended.

[0019] This invention achieves the recycling of the absorbent liquid in the spray tower through a circulating pump, reducing the consumption of absorbent liquid; on the other hand, it adopts a dual activated carbon placement box design, combined with a servo motor-driven flip-and-replace structure, which can complete the online replacement of activated carbon, reducing the downtime required; at the same time, the cleaning ring and the vacuum cleaner work together to achieve automatic cleaning of the dust collection chamber, eliminating the need for manual disassembly and cleaning, reducing the workload and labor costs of operation and maintenance.

[0020] This invention facilitates the smooth entry of waste gas through the bell-shaped inlet of the corrugated air guide pipe, reducing the adhesion of viscous substances; the cooling design of the spiral heat exchange tube avoids the impact of high-temperature asphalt fumes on the adsorption performance of activated carbon; the overall structure is suitable for the waste gas treatment scenarios of asphalt pre-mixing equipment, and has a wide range of applications.

[0021] Additional aspects and advantages of this disclosure will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this disclosure. Attached Figure Description

[0022] The above and / or additional aspects and advantages of this disclosure will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, in which:

[0023] Figure 1 is a schematic diagram of the overall structure of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure;

[0024] Figure 2 is a side sectional view of the cyclone separator body in an exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure.

[0025] Figure 3 is an enlarged structural schematic diagram of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure, at point A in Figure 2.

[0026] Figure 4 is a side sectional view of the exhaust stack portion of an exhaust gas treatment system for an asphalt premixing equipment according to an embodiment of this disclosure.

[0027] Figure 5 is a side sectional view of the spray tower portion of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure.

[0028] Figure 6 is a schematic diagram of the internal structure of the spray tower in the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure.

[0029] Figure 7 is a schematic diagram of the structure of the pollution collection component and the adsorption component in the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure;

[0030] Figure 8 is an enlarged structural schematic diagram of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure, at point B in Figure 7.

[0031] Figure 9 is an enlarged structural schematic diagram of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure, at point C in Figure 7.

[0032] Figure 10 is an enlarged structural schematic diagram of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure, at point D in Figure 7-D.

[0033] Figure 11 is an enlarged structural schematic diagram of the exhaust gas treatment system of an asphalt premixing equipment according to an embodiment of the present disclosure, at point E in Figure 7-E.

[0034] As shown in the figure: 1. Cyclone separator body; 2. Spray tower; 4. Adsorption cylinder; 6. Exhaust stack; 7. Dust collection chamber; 8. Cleaning ring; 9. Corrugated air guide pipe; 10. Vertical rod; 11. Spiral heat exchange tube; 12. Heat exchange joint; 13. Conical constriction; 14. Conical block; 15. Dust collection box; 16. Diffusion chamber; 17. Solenoid valve; 18. First servo motor; 19. Dispersion rack; 20. Spray ring; 21. Spray head; 22. Contact pipe; 23. Liquid inlet pipe; 24. Circulating pump body; 25. Liquid delivery pipe; 26. Liquid injection pipe; 27. Connecting pipe; 28. Drain hole;

[0035] Sludge collection assembly; 301. Sludge collection box; 302. Partition; 303. Chamber; 304. Drain outlet; 305. Drain trough; 306.

[0036] 307. Opening and closing block; 308. Vacuum cleaner; 309. L-shaped linkage rod; 310. Connecting block; 311. Return spring; 312. Liquid collection tube; 313. Stop block;

[0037] 5. Adsorption assembly; 501. Activated carbon placement box; 502. Fixing frame; 503. Second servo motor; 504. Screw; 505. Connecting frame; 506. Sealing cover; 507. Lifting block; 508. Third servo motor; 509. Rotating rod; 510. Through hole. Detailed Implementation

[0038] Embodiments of this disclosure are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are used only to explain this disclosure, and should not be construed as limiting this disclosure. Rather, embodiments of this disclosure include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0039] As shown in Figures 1-11, this embodiment of the present disclosure proposes a waste gas treatment system for an asphalt pre-mixing equipment, comprising: a cyclone separator body 1, wherein an adsorption cylinder 4 is fixedly connected to the top of the air outlet cylinder in the middle of the cyclone separator body 1, and a corrugated air guide pipe 9 with a funnel-shaped inlet end is fixedly connected to the air inlet on one side of the cyclone separator body 1; a dust collection box 15 is fixedly installed at the discharge port at the bottom of the cyclone separator body 1; a spray tower 2, wherein the spray tower 2 is fixedly installed above the cyclone separator body 1, and the air inlet on one side of the spray tower 2 is connected to the air outlet on one side of the adsorption cylinder 4 through an interface; a diffusion chamber 16 with multiple air outlets at the top is fixedly connected inside the spray tower 2, and the air inlet of the diffusion chamber 16 is connected to the air inlet on one side of the spray tower 2; and a dirt collection assembly 3, wherein the dirt collection assembly 3 is disposed between the cyclone separator body 1 and the spray tower 2. 3 includes a sludge collection box 301 fixedly connected between the cyclone separator body 1 and the spray tower 2. A partition 302 is fixedly connected inside the sludge collection box 301, dividing the internal space of the sludge collection box 301 into two chambers 303. A drain outlet 304 communicating with the interior of the adsorption cylinder 4 is fixedly connected to one side of the sludge collection box 301. The drain outlet 304 is fixedly connected to one side of the sludge collection box 301 and communicates with one of the chambers 303. Adsorption assembly 5 is disposed inside the adsorption cylinder 4 and cooperates with the sludge collection assembly 3. The adsorption assembly 5 includes an activated carbon placement box 501 disposed inside the adsorption cylinder 4 and having a through hole at the bottom. Two activated carbon placement boxes 501 are provided and arranged symmetrically at the top and bottom. A connecting frame 505 is fixedly connected between the two activated carbon placement boxes 501, and a space is left between the two activated carbon placement boxes 501.

[0040] Understandably, the exhaust gas generated by asphalt pre-mixing first enters the cyclone separator body 1 through the bell-shaped corrugated air guide pipe 9 at the inlet end. Centrifugal force is used to separate most of the large dust particles in the exhaust gas. The separated dust settles into the dust collection box 15 at the bottom for temporary storage, which initially reduces the concentration of particulate matter in the exhaust gas and reduces the load on subsequent purification stages.

[0041] In some embodiments, a solenoid valve 17 is fixedly connected to the bottom drain port of the diffusion chamber 16, a first servo motor 18 is fixedly connected to the bottom of the spray tower 2, the output shaft of the first servo motor 18 passes through the interior of the spray tower 2 and is fixedly connected to a dispersion rack 19, and a spray ring 20 located above the diffusion chamber 16 is fixedly connected to the inner wall of the spray tower 2; wherein, the dispersion rack 19 is located above the air outlet at the top of the diffusion chamber 16 and below the spray ring 20, a plurality of spray heads 21 arranged in a circular pattern are fixedly connected to the inner side of the spray ring 20, and a plurality of spirally arranged nozzles are fixedly connected to the top of the spray ring 20. Contact pipes 22, the air inlets at the bottom of multiple contact pipes 22 are located inside the spray ring 20, and the air outlets at the top of multiple contact pipes 22 are fixedly connected to liquid inlet pipes 23. A circulating pump body 24 is fixedly installed on the lower outer side of the spray tower 2. The liquid inlet of the circulating pump body 24 penetrates into the spray tower 2 and is fixedly connected to its bottom. A delivery pipe 25 is fixedly connected between the liquid outlet of the circulating pump body 24 and the liquid inlet pipe 23. An injection pipe 26 and a connecting pipe 27 are fixedly connected to the delivery pipe 25 and communicate with it. One end of the connecting pipe 27 penetrates into the spray tower 2 and is fixedly connected to one side of the spray ring 20 and communicates with it.

[0042] Understandably, the adsorbed waste gas enters the spray tower 2 through the interface, and is first evenly dispersed in the internal diffusion chamber 16 (with multiple air outlets at the top). At the same time, the first servo motor 18 drives the dispersion frame 19 to rotate, further breaking up gas agglomeration, so that the gas can fully contact the absorbent sprayed by the spray head 21 of the spray ring 20, and initially remove the remaining pollutants. Then, the gas rises along the spirally arranged contact pipe 22, forming a counter-flow with the absorbent transported by the liquid inlet pipe 23 in the pipe, enhancing the mass transfer efficiency and deeply purifying the waste gas. The circulating pump body 24 at the bottom of the spray tower circulates the absorbent to the spray ring 20 through the liquid delivery pipe 25 and the connecting pipe 27. At the same time, new absorbent can be added through the liquid injection pipe 26. The solenoid valve 17 at the bottom of the diffusion chamber 16 can periodically discharge the liquid accumulated in the chamber to avoid blockage.

[0043] In some embodiments, an exhaust pipe 6 is fixedly connected to the inner wall of the adsorption cylinder 4, and a dust collection chamber 7 is formed between the outer wall of the exhaust pipe 6 and the inner wall of the middle outlet cylinder of the cyclone separator body 1. A cleaning ring 8 is slidably fitted on the inner wall of the dust collection chamber 7, and a vertical rod 10 is fixedly connected to the upper side of the cleaning ring 8. A spiral heat exchange tube 11 is fixedly connected to the inner wall of the exhaust pipe 6, and a heat exchange joint 12 is fixedly connected to the outlet of the spiral heat exchange tube 11. The exhaust pipe 6 is located at the lower end of the middle outlet cylinder of the cyclone separator body 1 and is on the same central axis as it. The cleaning ring 8 cooperates with the dirt collection component 3 and the adsorption component 5. A tapered conical opening 13 that gradually narrows upwards is fixedly connected to the top of the exhaust pipe 6. Conical blocks 14 are fixedly connected to the upper and lower sides of the two activated carbon placement boxes 501, and the tapered blocks 14 correspond to the narrowing ends of the tapered conical opening 13. When the gas in the exhaust pipe 6 is exhausted upwards, it is contracted by the conical constriction 13, which increases the flow rate and impacts the surface of the upper conical block 14 for diffusion. At this time, the residual particles in the gas are separated and fall into the dust collection chamber 7.

[0044] It should be noted that the pre-purified exhaust gas enters the adsorption cylinder 4 at the top of the cyclone separator. It is first cooled by the spiral heat exchange tube 11 (external heat exchange connector 12) on the inner wall of the exhaust pipe 6 to avoid high temperature affecting the adsorption efficiency of activated carbon. Then, the gas is accelerated by the conical constriction 13 at the top of the exhaust pipe and impacts the conical blocks 14 on both sides of the activated carbon placement box 501. During the gas diffusion process, the residual fine particles are detached and fall into the dust collection chamber 7 formed between the exhaust pipe 6 and the exhaust cylinder of the cyclone separator. Finally, the gas passes through the activated carbon placement box 501 below and the volatile organic compounds and harmful gases are removed by activated carbon adsorption, completing the intermediate purification.

[0045] In some embodiments, a drain trough 305 is provided at the connection between the adsorption cylinder 4 and the drain outlet 304. An opening / closing block 306 is provided within the drain trough 305. A vacuum cleaner 307 is fixedly installed on one side of the drain outlet 304 within the sludge collection box 301. An L-shaped linkage rod 308 is fixedly connected to one side of the opening / closing block 306. The opening of the drain trough 305 is smaller than the opening of the drain outlet 304. The smaller end of the opening / closing block 306 is smaller than the inner diameter of the drain trough 305, and one end is rounded and located inside the adsorption cylinder 4. The side of the cleaning ring 8 abuts against one end of the rounded corner of the opening / closing block 306. The larger end of the opening / closing block 306 is larger than the inner diameter of the drain trough 305 and engages with it. The circumference of the horizontal rod of the L-shaped linkage rod 308 is fixedly connected to... A connecting block 309 is provided, and a return spring 310 is fixedly connected between one side of the connecting block 309 and one side of the partition 302. The transverse rod of the L-shaped linkage rod 308 is slidably engaged with the partition 302. A drain hole 28 is provided at the bottom of the spray tower 2. A collection pipe 311 located in and connected to the drain hole 28 is fixedly connected to the top of the sludge collection box 301. The collection pipe 311 is connected to another chamber 303 of the sludge collection box 301. The longitudinal rod of the L-shaped linkage rod 308 is located in the other chamber 303 of the sludge collection box 301. A stop block 312 is fixedly connected to the top of the longitudinal rod of the L-shaped linkage rod 308. The stop block 312 is slidably engaged at the connection between the collection pipe 311 and the chamber 303.

[0046] In some embodiments, a fixed frame 502 facing upward is fixedly connected to the outer wall of the adsorption cylinder 4. A second servo motor 503 is fixedly installed at the bottom of the fixed frame 502. A screw 504 axially arranged and penetrating into the fixed frame 502 is fixedly connected to the output shaft of the second servo motor 503. A lifting block 507 is slidably fitted to the inner wall of the fixed frame 502. A sealing cover 506 is fixedly connected to the top of the upright 10. The screw 504 penetrates the lifting block 507 and is threadedly fitted to it. The sealing cover 506 is located above the top activated carbon placement box 501 and fits with the top opening of the adsorption cylinder 4. A third servo motor 508 is fixedly installed on one side of the lifting block 507. A rotating rod 509 is fixedly connected to the output shaft of the third servo motor 508. A through hole 510 is opened through one side of the upright 10. One end of the rotating rod 509 is fixedly connected to the middle side of the connecting frame 505. The rotating rod 509 is rotatably fitted to the inner wall of the through hole 510. When the sealing cap 506 is closed at the top of the adsorption cylinder 4, there is space between the two activated carbon placement boxes 501, aligning them with the air outlet of the adsorption cylinder 4. The gas filtered by the activated carbon in the activated carbon placement boxes 501 is then transported to the spray tower 2. At this time, the cleaning ring 8 is located at the bottom of the dust collection chamber 7. When it is necessary to replace the activated carbon in the activated carbon placement boxes 501 after prolonged use, the second servo motor 503 is activated to move the two activated carbon placement boxes 501 upwards. When they reach a certain height, the third servo motor 508 is activated to flip and swap the two activated carbon placement boxes 501, so that the unused activated carbon placement box 501 is located at the bottom. Simultaneously, the cleaning ring 8 moves upward, lifting the particulate matter in the dust collection chamber 7 to the drain trough 305 of the drain outlet 304. At this time, the side of the cleaning ring 8 abuts against one end of the rounded corner of the opening and closing block 306, pushing the opening and closing block 306 into the drain outlet 304 to open the drain trough 305. The vacuum cleaner 307 starts working, adsorbing the particulate matter into one chamber 303 of the sludge collection box 301. At the same time, the opening and closing block 306, which is pushed inward, drives the stop block 312 to slide to one side through the L-shaped linkage rod 308, opening the connection between the liquid collection pipe 311 and the chamber 303, collecting the waste liquid that has reacted multiple times in the spray tower 2 into another chamber 303 of the sludge collection box 301.

[0047] It should be noted that when the activated carbon placement box 501 becomes saturated and needs to be replaced, the second servo motor 503 at the bottom of the fixed frame 502 is activated, driving the screw 504 to move the lifting block 507 upward. Simultaneously, the cleaning ring 8 and the activated carbon placement box 501 rise via the upright 10. The cleaning ring 8 moves upward along the inner wall of the dust collection chamber 7, scraping away particulate matter adhering to the chamber wall, until it rises to the drain trough 305 at the drain outlet 304. Its side abuts against the rounded end of the opening and closing block 306 and pushes the opening and closing block 306 to open the drain trough 305. At this time, the vacuum cleaner 307 in the drain outlet 304 starts, collecting the dust... Particulate matter in chamber 7 is adsorbed into one chamber 303 of the sludge collection box 301; at the same time, the opening and closing block 306 drives the stop block 312 to slide through the L-shaped linkage rod 308, opening the connection port between the liquid collection pipe 311 and the other chamber 303 of the sludge collection box 301, and the waste liquid in the spray tower 2 flows into the chamber for storage through the drain hole 28 and the liquid collection pipe 311; then the third servo motor 508 is started, and the activated carbon placement box 501 is rotated through the rotating rod 509, so that the unused activated carbon placement box 501 is moved down to the working position, completing the activated carbon replacement and sludge collection, reducing the downtime required.

[0048] Working principle:

[0049] When using the device, the exhaust gas generated from asphalt pre-mixing first enters the cyclone separator body 1 through the bell-shaped corrugated air guide pipe 9 at the inlet end. Under the action of centrifugal force, most of the large dust particles are separated and settle into the bottom dust collection box 15 for temporary storage. The preliminarily purified exhaust gas then enters the adsorption cylinder 4 at the top of the cyclone separator. It is first cooled by the spiral heat exchange tube 11 (external heat exchange joint 12) on the inner wall of the exhaust pipe 6 to avoid high temperature affecting the adsorption effect. Then it is accelerated by the conical constriction 13 at the top of the exhaust pipe and impacts the conical blocks 14 on both sides of the activated carbon placement box 501. When the gas diffuses, the residual fine particles detach and fall into the exhaust pipe 6 and the cyclone separator. The gas passes through the dust collection chamber 7 between the separator's outlet cylinders, and then through the activated carbon placement box 501 below. The activated carbon adsorbs and removes volatile organic compounds and harmful gases, completing the intermediate purification stage. The adsorbed waste gas enters the spray tower 2 through the interface, and is evenly dispersed through the internal diffusion chamber 16 (with multiple air outlets at the top). Simultaneously, the first servo motor 18 drives the dispersion frame 19 to rotate, breaking up gas agglomerations and ensuring sufficient contact between the gas and the absorbent sprayed by the spray nozzles 21 of the spray ring 20, initially removing remaining pollutants. Subsequently, the gas rises along the spiral contact pipe 22, flowing counter-currently with the absorbent transported by the inlet pipe 23 inside the pipe to enhance mass transfer and achieve deep purification. The bottom circulation pump 24 of the spray tower circulates the absorbent liquid to the spray ring 20 through the infusion pipe 25 and the connecting pipe 27. It can also replenish the absorbent liquid through the injection pipe 26. The solenoid valve 17 at the bottom of the diffusion chamber 16 periodically discharges the accumulated liquid in the chamber. When the activated carbon placement box 501 is saturated and needs to be replaced, the second servo motor 503 at the bottom of the fixed frame 502 is started, driving the screw 504 to move the lifting block 507 upward. The upright 10 synchronously drives the cleaning ring 8 and the activated carbon placement box 501 to rise. The cleaning ring 8 moves upward along the inner wall of the dust collection chamber 7 to scrape off particulate dirt. When it reaches the drain outlet 304 and the drain trough 305, its side abuts and pushes against it. The movable opening and closing block 306 opens the sewage tank 305, and the vacuum cleaner 307 in the sewage outlet 304 starts to absorb particulate dirt into one chamber 303 of the sewage collection box 301. At the same time, the opening and closing block 306 drives the stop block 312 to slide through the L-shaped linkage rod 308, opening the connection port between the liquid collection pipe 311 and the other chamber 303 of the sewage collection box 301. The waste liquid in the spray tower 2 flows into the chamber through the drain hole 28 and the liquid collection pipe 311. Then, the third servo motor 508 is started, and the activated carbon placement box 501 is rotated through the rotating rod 509, so that the unused activated carbon placement box 501 is moved down to the working position, completing the entire treatment and maintenance process.

[0050] It should be noted that this invention relates to a high-temperature composite waste gas treatment system for asphalt premixing equipment, belonging to the field of International Patent Classification B01D (keywords: solid waste pollution; high-efficiency activated carbon; environmental engineering construction; residential indoor air purifiers; environmental protection technology and resource recycling technology promotion services). Specifically, it involves "combined methods and equipment for separating particles from gas or vapor, utilizing gas-liquid contact, rigid hollow filter, high-efficiency adsorption-catalysis coupling purification, and cascade recovery and utilization of purified heat energy" technology, which can be widely applied in environmental engineering construction, solid waste pollution control, residential indoor air purifier upgrades, environmental technology promotion, and resource recycling technology service scenarios.

[0051] In the description of this disclosure, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Furthermore, in the description of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0052] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of preferred embodiments of this disclosure includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the function involved, as will be understood by those skilled in the art to which embodiments of this disclosure pertain.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0054] Although embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present disclosure.

Claims

1. A waste gas treatment system for an asphalt premixing equipment, characterized in that, include: Cyclone separator body (1), the top of the middle air outlet of the cyclone separator body (1) is fixedly connected to an adsorption cylinder (4), the air inlet on one side of the cyclone separator body (1) is fixedly connected to a corrugated air guide pipe (9) with a horn-shaped inlet end, and a dust collection box (15) is fixedly installed at the bottom outlet of the cyclone separator body (1); spray tower (2), the spray tower (2) is fixedly installed above the cyclone separator body (1), the air inlet on one side of the spray tower (2) is connected to the air outlet on one side of the adsorption cylinder (4) through an interface, and the interior of the spray tower (2) is fixedly connected to a top A diffusion chamber (16) with multiple air outlets is provided, and the air inlet of the diffusion chamber (16) is connected to the air inlet on one side of the spray tower (2); a sludge collection assembly (3) is provided between the cyclone separator body (1) and the spray tower (2), and the sludge collection assembly (3) includes a sludge collection box (301) fixedly connected between the cyclone separator body (1) and the spray tower (2), and a partition (302) is fixedly connected inside the sludge collection box (301), and the partition (302) divides the internal space of the sludge collection box (301) into two chambers (303), and the adsorption cylinder (4) A drain outlet (304) is fixedly connected to one side of the sludge collection box (301) and communicates with one of the chambers (303); an adsorption component (5) is disposed inside the adsorption cylinder (4) and cooperates with the sludge collection component (3). The adsorption component (5) includes an activated carbon placement box (501) disposed inside the adsorption cylinder (4) and having a through hole at the bottom. Two activated carbon placement boxes (501) are provided and arranged symmetrically above and below each other. The two activated carbon placement boxes (501) are fixedly connected to each other. A connecting frame (505) is fixedly connected, and a space is left between the two activated carbon placement boxes (501). An exhaust pipe (6) is fixedly connected to the inner wall of the adsorption cylinder (4). A dust collection chamber (7) is formed between the outer wall of the exhaust pipe (6) and the inner wall of the middle outlet pipe of the cyclone separator body (1). A cleaning ring (8) is slidably fitted on the inner wall of the dust collection chamber (7). A vertical rod (10) is fixedly connected to the upper side of the cleaning ring (8). A spiral heat exchange tube (11) is fixedly connected to the inner wall of the exhaust pipe (6). A heat exchange joint (12) is fixedly connected to the outlet of the spiral heat exchange tube (11).The exhaust pipe (6) is located at the lower end of the exhaust pipe in the middle of the cyclone separator body (1) and is on the same central axis as it. The cleaning ring (8) cooperates with the dirt collection component (3) and the adsorption component (5). A drain trough (305) is provided at the connection between the adsorption cylinder (4) and the drain port (304). An opening and closing block (306) is provided in the drain trough (305). A vacuum cleaner (307) is fixedly installed on one side of the drain port (304) inside the dirt collection box (301). An L-shaped linkage rod (308) is fixedly connected to one side of the opening and closing block (306). The opening of the drain trough (305) is smaller than the opening of the drain outlet (304). The smaller end of the opening and closing block (306) is smaller than the inner diameter of the drain trough (305), and one end is rounded and located inside the adsorption cylinder (4). The side of the cleaning ring (8) abuts against one end of the rounded corner of the opening and closing block (306). The larger end of the opening and closing block (306) is larger than the inner diameter of the drain trough (305) and cooperates with it.

2. The exhaust gas treatment system for an asphalt premixing equipment according to claim 1, characterized in that, A solenoid valve (17) is fixedly connected to the bottom drain port of the diffusion chamber (16), a first servo motor (18) is fixedly connected to the bottom of the spray tower (2), the output shaft of the first servo motor (18) passes through the interior of the spray tower (2) and is fixedly connected to a dispersion rack (19), and a spray ring (20) located above the diffusion chamber (16) is fixedly connected to the inner wall of the spray tower (2); wherein, the dispersion rack (19) is located above the air outlet at the top of the diffusion chamber (16) and below the spray ring (20).

3. The exhaust gas treatment system for an asphalt premixing equipment according to claim 2, characterized in that, Multiple spray heads (21) arranged in a circular pattern are fixedly connected to the inner side of the spray ring (20). Multiple spirally arranged contact tubes (22) are fixedly connected to the top of the spray ring (20). The air inlets at the bottom of the multiple contact tubes (22) are located inside the spray ring (20), and liquid inlets (23) are fixedly connected to the air outlets at the top of the multiple contact tubes (22).

4. The exhaust gas treatment system for an asphalt premixing equipment according to claim 3, characterized in that, A circulating pump body (24) is fixedly installed on the lower outer side of the spray tower (2). The inlet of the circulating pump body (24) penetrates into the spray tower (2) and is fixedly connected to its bottom. A delivery pipe (25) is fixedly connected between the outlet of the circulating pump body (24) and the inlet pipe (23). An injection pipe (26) and a connecting pipe (27) are fixedly connected to the delivery pipe (25). One end of the connecting pipe (27) penetrates into the spray tower (2) and is fixedly connected to one side of the spray ring (20) and communicates with it.

5. The exhaust gas treatment system for an asphalt premixing equipment according to claim 1, characterized in that, The top of the exhaust pipe (6) is fixedly connected to a tapered concave opening (13) that gradually narrows upwards. Both sides of the two activated carbon placement boxes (501) are fixedly connected to tapered blocks (14), which correspond to the narrowed ends of the tapered concave opening (13).

6. The exhaust gas treatment system for an asphalt premixing equipment according to claim 1, characterized in that, A connecting block (309) is fixedly connected to the periphery of the horizontal bar of the L-shaped linkage rod (308). A return spring (310) is fixedly connected between one side of the connecting block (309) and one side of the partition plate (302). The horizontal bar of the L-shaped linkage rod (308) and the partition plate (302) are in a through-sliding fit. A drain hole (28) is provided at the bottom of the spray tower (2). A sludge collection box (301) is fixedly connected to the top of the sludge collection box (301) and located inside and connected to the drain hole (28). A liquid collection pipe (311) is connected to another chamber (303) of a sludge collection box (301). The longitudinal rod of the L-shaped linkage rod (308) is located in the other chamber (303) of the sludge collection box (301). A stop block (312) is fixedly connected to the top of the longitudinal rod of the L-shaped linkage rod (308). The stop block (312) is slidably fitted at the connection between the liquid collection pipe (311) and the chamber (303) and cooperates with it.

7. The exhaust gas treatment system for an asphalt premixing equipment according to claim 1, characterized in that, The outer wall of the adsorption cylinder (4) is fixedly connected to an upward-facing fixed frame (502). A second servo motor (503) is fixedly installed at the bottom of the fixed frame (502). The output shaft of the second servo motor (503) is fixedly connected to a screw (504) that passes through the fixed frame (502) and is axially arranged. The inner wall of the fixed frame (502) is provided with a lifting block (507) that slides up and down. A sealing cover (506) is fixedly connected to the top of the upright (10). The screw (504) passes through the lifting block (507) and is threadedly engaged with it. The sealing cover (506) is located above the top activated carbon placement box (501) and is engaged with the top opening of the adsorption cylinder (4).

8. The exhaust gas treatment system for an asphalt premixing equipment according to claim 7, characterized in that, A third servo motor (508) is fixedly installed on one side of the lifting block (507), and the output shaft of the third servo motor (508) is fixedly connected to a rotating rod (509). A through hole (510) is opened through one side of the upright rod (10); wherein, one end of the rotating rod (509) is fixedly connected to the middle side of the connecting frame (505), and the rotating rod (509) is rotatably fitted on the inner wall of the through hole (510).

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