Asphalt smoke waste gas treater with pretreatment function

Abstract

The utility model discloses an asphalt fume waste gas treater with a pretreatment function, and particularly relates to the technical field of asphalt fume waste gas treatment.The asphalt fume waste gas treater comprises a supporting frame, a filter cartridge is fixedly arranged in the supporting frame, a conveying pipe is arranged at the top of the filter cartridge in a penetrating mode, a spraying tower is arranged at one end of the conveying pipe in a penetrating mode, and a filtering mechanism is arranged at the top of the spraying tower; the filtering mechanism comprises an output pipe arranged at the top of the spraying tower in a penetrating manner, a filtering box is arranged at the top of the output pipe in a penetrating manner, a sealing cover is hinged to one side of the filtering box, a plurality of sliding grooves are formed in the filtering box, and mounting frames are slidably connected to the interiors of the sliding grooves. The multiple filtering layers can deeply purify waste gas, the drawing type mounting frame facilitates inspection, cleaning and replacement of the filtering layers, comprehensive spraying at different heights and in different directions is achieved, asphalt smoke waste gas can make full contact with spraying liquid, and the using effect is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to bitumen smoke waste gas treatment technical field more specifically, the utility model relates to the bitumen smoke waste gas treater with pre -treatment function. BACKGROUND

[0002] Bitumen smoke is a kind of special pollutant, mainly by aliphatic hydrocarbon and polycyclic alkanes such as hydrocarbon mixture. Polycyclic aromatic hydrocarbon is by several benzene rings and pentadiene and is formed. Polycyclic aromatic hydrocarbon is mostly solid at normal temperature, and the polycyclic aromatic hydrocarbon above three rings is colorless and light yellow crystal, and research shows that the polycyclic aromatic hydrocarbon above three rings is more carcinogenic, and bitumen smoke must be purified to meet the emission standard.

[0003] The bitumen smoke treatment device in the prior art institution handles bitumen smoke by burning when in use, but harmful gases are still generated in the combustion process, and air pollution is still caused by discharging to the air, which reduces the effect of bitumen smoke treatment, and cannot save treatment cost, causing resource waste.

[0004] Through the search, the patent with the authorized announcement number CN216259870U discloses a bitumen smoke treatment device, which is connected with the outside air suction pipe through the smoke dust filter pipe, and the bitumen smoke is conveyed into the inside of the sprayer through the smoke dust filter pipe and the outside air suction pipe, the smoke dust filter pipe can coarsely filter the bitumen smoke, remove the larger particles in the bitumen smoke, and the spraying pipe is connected with the outside water suction pump for spraying, which can spray and clean the particles and tar in the bitumen smoke, the bitumen smoke after spraying is conveyed into the inside of the filtering mechanism, the bitumen smoke passes through the activated carbon adsorption net, and the UV photolysis waste gas treater at the lower end catalyzes the bitumen smoke to be UV photolyzed, effectively removes the pungent odor in the smoke, and finally the filtered smoke is discharged after being purified by the plasma purifier, and the water body recovery mechanism is interconnected at the bottom of the spraying tower, the water body after filtration is sucked by the water sprayer and sprayed into the inside of the spraying tower again, realizing the recycling of the water body and effectively reducing the treatment cost, facilitating the smoke treatment.

[0005] However, the activated carbon adsorption net, the filter cartridge and the UV photolysis waste gas treater in the filtering mechanism are integrally sealed and packaged when actually used, and when the activated carbon adsorption is saturated and needs to be replaced, the operation is complex, the replacement cost and difficulty are increased, and then the use effect is affected. UTILITY MODEL CONTENTS

[0006] In order to overcome the above-mentioned defects of the prior art, the utility model provides a bitumen smoke waste gas treater with pre-treatment function to solve the problems in the above background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An asphalt fume exhaust gas processor with pretreatment function includes a support frame, a filter cylinder is fixedly installed inside the support frame, a conveying pipe is provided through the top of the filter cylinder, a spray tower is provided through one end of the conveying pipe, and a filtration mechanism is provided at the top of the spray tower.

[0009] The filtration mechanism includes an output pipe extending through the top of the spray tower, a filter box extending through the top of the output pipe, a sealing cover hinged to one side of the filter box, multiple sliding grooves inside the filter box, mounting frames slidably connected inside each of the multiple sliding grooves, a filter layer snapped into the inside of the mounting frame, two pull-out grooves on the surface of the mounting frame, one end of the conveying pipe and the output pipe both penetrating the support frame and extending outward from the support frame, a retaining strip rotatably provided on one side of the sealing cover, a retaining block snapped into one end of the retaining strip, an air outlet pipe extending through one side of the filter box, and a suction fan fixedly installed on one side of the air outlet pipe.

[0010] By adopting the above technical solution, the multi-layer filter in the filter box can deeply purify the exhaust gas, and the pull-out installation frame facilitates the inspection, cleaning and replacement of the filter layer. The overall structure is compact and reasonable. While efficiently purifying asphalt fume exhaust gas and reducing environmental pollution, it has significant advantages such as stable operation and convenient operation and maintenance, which helps relevant industrial enterprises meet environmental protection requirements and reduce operating costs.

[0011] As a further description of the above technical solution: a spraying mechanism is fixedly installed inside the spraying tower. The spraying mechanism includes a liquid delivery tray fixedly installed on the inner wall of the spraying tower. Two through holes are opened on the surface of the liquid delivery tray. Multiple first nozzles are installed through the bottom of the liquid delivery tray. Multiple through pipes are installed through the bottom of the liquid delivery tray. A conveying ring is installed through the bottom of each of the multiple through pipes. Multiple second nozzles are installed through one side of the conveying ring. An inlet pipe is installed through one side of the liquid delivery tray.

[0012] By adopting the above technical solution, comprehensive spraying at different heights and directions can be achieved, allowing asphalt fumes to fully contact the spray liquid, effectively adsorbing, dissolving and neutralizing various pollutants in the fumes, and improving the purification effect.

[0013] As a further description of the above technical solution: the inner wall of the spray tower is fixedly provided with two liquid guide plates, the bottom of the spray tower is provided with a liquid outlet pipe, the bottom of the filter cylinder is provided with a conical cylinder, the bottom of the conical cylinder is provided with a slag discharge pipe, one side of the filter cylinder is provided with a main air inlet pipe, and a conical block is fixedly provided inside the conical cylinder.

[0014] By adopting the above technical solution, the liquid guide plate and the liquid outlet pipe can guide and collect the liquid in the spray tower to be discharged in an orderly manner, avoid liquid splashing, maintain stable operation, and also perform preliminary filtration of exhaust gas, block large particulate impurities and facilitate discharge, thus protecting subsequent components.

[0015] The technical effects and advantages of this utility model are as follows:

[0016] 1. By setting up a filtration mechanism, compared with existing technologies, the multi-layer filtration synergy of the filter layer, combined with glass fiber filter paper, ceramic fiber filter layer and activated carbon fiber filter layer, forms a comprehensive purification from physical interception of particles to chemical adsorption of acid and alkaline gases and deep adsorption of volatile organic compounds, thereby significantly improving the overall purification efficiency and enabling the treated waste gas to meet stricter environmental emission standards. Moreover, through the design of the pull-out installation frame, the installation frame can be easily pulled out from the slide groove inside the filter box, which greatly facilitates the regular inspection, cleaning or replacement of the filter layer. Operators do not need complicated tools or professional skills to quickly complete the maintenance of the filter layer, shorten the equipment maintenance time, improve the overall operating efficiency of the equipment, and also reduce the increase in labor costs caused by the difficulty of filter layer maintenance.

[0017] 2. By setting up a spraying mechanism, compared with existing technologies, the design of the liquid conveying tray, conveying ring, and corresponding nozzles achieves a comprehensive spraying layout at different heights and directions within the spraying tower. This multi-dimensional spraying method ensures that the asphalt fume exhaust gas and the spraying liquid can fully and evenly contact each other, greatly improving the mass transfer efficiency between pollutants and the spraying liquid, significantly enhancing the spraying tower's purification capacity for asphalt fume exhaust gas, effectively reducing the concentration of harmful substances in the exhaust gas, making it closer to or meeting environmental emission standards. The liquid guide plate effectively guides the falling liquid down the tower wall, preventing the liquid from splashing everywhere inside the tower, keeping the liquid inside the spraying tower in a dynamic and controllable state, ensuring the long-term stable operation of the spraying tower, reducing equipment failures and downtime caused by abnormal liquid flow, and improving the operational reliability of the entire exhaust gas treatment system. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 This is a schematic diagram of the overall rear view structure of this utility model.

[0020] Figure 3 This is a schematic diagram of the filter mechanism of this utility model.

[0021] Figure 4 This is a schematic diagram showing the detailed structure of the spraying mechanism of this utility model.

[0022] Figure 5 This is a schematic diagram of the overall cross-sectional structure of this utility model.

[0023] The attached diagram is labeled as follows: 1. Support frame; 2. Filter cylinder; 3. Conveying pipe; 4. Spray tower; 5. Output pipe; 6. Filter box; 7. Sealing cover; 8. Mounting frame; 9. Filter layer; 10. Pull-out groove; 11. Locking strip; 12. Locking block; 13. Air outlet pipe; 14. Fan; 15. Infusion tray; 16. First nozzle; 17. Through pipe; 18. Conveying ring; 19. Second nozzle; 20. Liquid inlet pipe; 21. Liquid guide plate; 22. Liquid outlet pipe; 23. Conical cylinder; 24. Main air inlet pipe; 25. Conical block. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] The embodiments disclosed in this application are as follows: Figures 1-5 The asphalt fume exhaust gas processor with pretreatment function shown includes a support frame 1, a filter cylinder 2 is fixedly installed inside the support frame 1, a conveying pipe 3 is provided through the top of the filter cylinder 2, a spray tower 4 is provided through one end of the conveying pipe 3, and a filtration mechanism is provided at the top of the spray tower 4.

[0026] The filtration mechanism includes an output pipe 5 extending through the top of the spray tower 4, a filter box 6 extending through the top of the output pipe 5, a sealing cover 7 hinged to one side of the filter box 6, multiple sliding grooves inside the filter box 6, and mounting frames 8 slidably connected inside each of the multiple sliding grooves. A filter layer 9 is snapped into the inside of the mounting frame 8, and two pull-out grooves 10 are formed on the surface of the mounting frame 8. One end of the conveying pipe 3 and the output pipe 5 both pass through the support frame 1 and extend outward from the support frame 1. A retaining strip 11 is rotatably set on one side of the sealing cover 7, and a retaining block 12 is snapped into one end of the retaining strip 11. An air outlet pipe 13 extends through one side of the filter box 6, and a suction fan 14 is fixedly installed on one side of the air outlet pipe 13. The exhaust gas treated by the spray tower 4 enters the filter box 6 through two through holes on the surface of the liquid delivery tray 15 and the output pipe 5 extending through the top of the spray tower 4. By pulling out the two pull-out grooves 10 on the surface of the mounting frame 8, the mounting frame 8 can be easily pulled out from the sliding grooves inside the filter box 6 for easy cleaning. Filter layers 9 undergo regular inspection, cleaning, or replacement. Different filter layers 9 serve different filtration functions. One filter layer 9 is made of glass fiber filter paper, which primarily uses its fine fiber gaps to intercept particles. Tiny solid particles in asphalt fume exhaust gas, such as incompletely burned carbon black particles and dust, are captured by the fiber network of the glass fiber filter paper when passing through it. Glass fiber filter paper is characterized by high temperature resistance and good chemical stability, enabling it to operate in high-temperature and complex chemical environments. Another filter layer 9 is made of ceramic fiber filter layer. The filtration mechanism of the ceramic fiber filter layer is based on its porous ceramic fiber structure, which can adsorb acidic and alkaline gas components in the exhaust gas to a certain extent, playing a role in chemical adsorption. Yet another filter layer 9 is made of activated carbon fiber filter layer, which can effectively adsorb volatile organic compounds in the exhaust gas, including harmful substances such as polycyclic aromatic hydrocarbons in asphalt fume, through physical adsorption, thereby deeply filtration and purification of the exhaust gas.

[0027] The filtered exhaust gas continues to be discharged through the exhaust pipe 13 installed on one side of the filter box 6. The suction fan 14, which is fixed on one side of the exhaust pipe 13, provides power to this device. The suction force generated by the fan allows the asphalt fume exhaust gas to pass through the filter cylinder 2, the spray tower 4, the filter box 6 and other treatment stages in sequence, ensuring that the exhaust gas can flow continuously and stably and be treated. Finally, the relatively clean exhaust gas after treatment is discharged into the external environment, thereby reducing the pollution caused by asphalt fume exhaust gas to the environment.

[0028] Reference Figures 2-3As shown, a spraying mechanism is fixedly installed inside the spray tower 4. The spraying mechanism includes a liquid delivery tray 15 fixedly installed on the inner wall of the spray tower 4. Two through holes are opened on the surface of the liquid delivery tray 15. Multiple first nozzles 16 are installed through the bottom of the liquid delivery tray 15. Multiple through pipes 17 are installed through the bottom of the liquid delivery tray 15. A conveying ring 18 is installed through the bottom of each of the multiple through pipes 17. Multiple second nozzles 19 are installed through one side of the conveying ring 18. An inlet pipe 20 is installed through one side of the liquid delivery tray 15 to deliver the external spraying liquid. Liquid pipe 20 enters liquid delivery tray 15, which serves to temporarily store and initially distribute liquid. Liquid is sprayed downwards through multiple first nozzles 16. In addition, multiple through pipes 17 at the bottom of liquid delivery tray 15 transport a portion of liquid to the lower delivery ring 18. The delivery ring 18 then sprays liquid outwards through multiple second nozzles 19 arranged on one side. This achieves a comprehensive spraying layout at different heights and directions within the spray tower 4, ensuring that the asphalt fume entering the spray tower 4 can fully contact the spraying liquid.

[0029] When the asphalt fume enters the spray tower 4 from the conveying pipe 3, it encounters the spray liquid sprayed from the first nozzle 16 and the second nozzle 19. During this process, the spray liquid adsorbs and dissolves some water-soluble particles, tar, and some harmful chemical components in the asphalt fume, which can react with the components in the spray liquid, causing them to transfer from the gas phase to the liquid phase, thereby achieving further purification of the waste gas.

[0030] Some water-soluble acidic or alkaline pollutants will be neutralized and removed by the corresponding components in the spray liquid. Some fine particulate impurities will be adsorbed and agglomerated by the spray liquid and fall with the liquid under the action of gravity. At the same time, the two liquid guide plates 21 fixedly installed on the inner wall of the spray tower 4 can guide the falling liquid to flow down the tower wall, avoiding the liquid from splashing everywhere. Finally, the liquid will be collected at the bottom of the spray tower 4 and discharged through the liquid outlet pipe 22.

[0031] Reference Figures 4-5As shown, two liquid guide plates 21 are fixedly installed on the inner wall of the spray tower 4. A liquid outlet pipe 22 is installed through the bottom of the spray tower 4. A conical cylinder 23 is installed through the bottom of the filter cylinder 2. A slag discharge pipe is installed through the bottom of the conical cylinder 23. A main air inlet pipe 24 is installed through one side of the filter cylinder 2. A conical block 25 is fixedly installed inside the conical cylinder 23. When the suction fan 14 is started, the asphalt fume exhaust gas first enters the filter cylinder 2 through the main air inlet pipe 24. The bottom of the filter cylinder 2 is provided with a conical cylinder 23, and a conical block 25 is fixedly installed inside. The conical block 25 may change the direction and speed of the airflow, causing the asphalt fume exhaust gas to generate a vortex along the conical cylinder 23. This causes larger particles to separate from the airflow under the action of inertia and gravity, and settle to the slag discharge pipe at the bottom of the conical cylinder 23 for discharge. This provides preliminary coarse filtration of the exhaust gas, intercepting some large particulate impurities and reducing the burden on subsequent treatment stages. The exhaust gas after preliminary filtration will continue to flow upward and enter the spray tower 4 through the conveying pipe 3 that runs through the top of the filter cylinder 2 for the next process.

[0032] Working principle of this utility model:

[0033] This utility model is an asphalt fume exhaust gas processor with pretreatment function. When the device is in use, the suction fan 14 is started, and the asphalt fume exhaust gas first enters the filter cylinder 2 through the main air inlet pipe 24. The bottom of the filter cylinder 2 is provided with a conical cylinder 23, and the conical block 25 fixed inside may change the direction and speed of the airflow, causing the asphalt fume exhaust gas to generate a vortex along the conical cylinder 23. This causes larger particles to separate from the airflow under the action of inertia, gravity, etc., and settle to the slag discharge pipe at the bottom of the conical cylinder 23 for discharge. This performs preliminary coarse filtration of the exhaust gas, intercepting some large particulate impurities and reducing the burden on subsequent treatment stages. The exhaust gas after preliminary filtration will continue to flow upward and enter the spray tower 4 through the conveying pipe 3 provided through the top of the filter cylinder 2.

[0034] The external spray liquid enters the delivery tray 15 through the inlet pipe 20. The delivery tray 15 serves to temporarily store and initially distribute the liquid. The liquid is sprayed downwards through multiple first nozzles 16. In addition, multiple through pipes 17 at the bottom of the delivery tray 15 will transport a portion of the liquid to the lower delivery ring 18. The delivery ring 18 then sprays the liquid outwards through multiple second nozzles 19 arranged on one side. This achieves a comprehensive spraying layout at different heights and directions within the spray tower 4, ensuring that the asphalt fume entering the spray tower 4 can fully contact the spray liquid.

[0035] When the asphalt fume enters the spray tower 4 from the conveying pipe 3, it encounters the spray liquid sprayed from the first nozzle 16 and the second nozzle 19. During this process, the spray liquid adsorbs and dissolves some water-soluble particles, tar, and some harmful chemical components in the asphalt fume, which can react with the components in the spray liquid, causing them to transfer from the gas phase to the liquid phase, thereby achieving further purification of the waste gas.

[0036] Some water-soluble acidic or alkaline pollutants will be neutralized and removed by the corresponding components in the spray liquid. Some fine particulate impurities will be adsorbed and agglomerated by the spray liquid and fall down with the liquid under the action of gravity. At the same time, the two liquid guide plates 21 fixedly installed on the inner wall of the spray tower 4 can guide the falling liquid to flow down the tower wall, avoid the liquid from splashing everywhere, and finally collect at the bottom of the spray tower 4 and be discharged through the liquid outlet pipe 22.

[0037] After being treated by the spray tower 4, the exhaust gas enters the filter box 6 through two through holes on the surface of the liquid transfer tray 15 and the output pipe 5 that runs through the top of the spray tower 4. The mounting frame 8 can be easily pulled out of the sliding groove inside the filter box 6 by pulling out the two pull slots 10 on the surface of the mounting frame 8, facilitating regular inspection, cleaning, or replacement of the filter layer 9. Different filter layers 9 provide different filtration functions. One filter layer 9 is made of glass fiber filter paper, which mainly uses its fine fiber gaps to intercept particles. Tiny solid particles in the asphalt fume exhaust gas, such as incompletely burned carbon black particles and dust, are filtered through the glass fiber filter paper. When glass fiber filter paper is used, the gas is trapped by the fiber network of the filter paper. Glass fiber filter paper has the characteristics of high temperature resistance and good chemical stability, and can work in high temperature and complex chemical environment. Another filter layer 9 is made of ceramic fiber filter layer material. The filtration mechanism of ceramic fiber filter layer is based on its porous ceramic fiber structure, which can adsorb acid and alkaline gas components in the exhaust gas to a certain extent, playing a role in chemical adsorption. Another filter layer 9 is made of activated carbon fiber filter layer. Through physical adsorption, it can effectively adsorb organic volatiles in exhaust gas, including harmful substances such as polycyclic aromatic hydrocarbons in asphalt fumes, thereby deeply filtering and purifying exhaust gas.

[0038] The filtered exhaust gas continues to be discharged through the exhaust pipe 13 installed on one side of the filter box 6. The suction fan 14, which is fixed on one side of the exhaust pipe 13, provides power to this device. The suction force generated by the fan allows the asphalt fume exhaust gas to pass through the filter cylinder 2, the spray tower 4, the filter box 6 and other treatment stages in sequence, ensuring that the exhaust gas can flow continuously and stably and be treated. Finally, the relatively clean exhaust gas after treatment is discharged into the external environment, thereby reducing the pollution caused by asphalt fume exhaust gas to the environment.

[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A pre-treatment device for asphalt fume exhaust gas, comprising a support frame (1), characterized in that: A filter cylinder (2) is fixedly installed inside the support frame (1). A conveying pipe (3) is provided through the top of the filter cylinder (2). A spray tower (4) is provided through one end of the conveying pipe (3). A filtration mechanism is provided at the top of the spray tower (4). The filtration mechanism includes an output pipe (5) that runs through the top of the spray tower (4), a filter box (6) that runs through the top of the output pipe (5), a sealing cover (7) that is hinged to one side of the filter box (6), multiple sliding grooves that are opened inside the filter box (6), and mounting frames (8) that are slidably connected inside the multiple sliding grooves. A filter layer (9) is snapped into the inside of the mounting frame (8), and two pull-out grooves (10) are opened on the surface of the mounting frame (8).

2. The asphalt fume exhaust gas processor with pretreatment function according to claim 1, characterized in that: One end of the conveying pipe (3) and the output pipe (5) both pass through the support frame (1) and extend outward from the support frame (1). A locking strip (11) is rotatably provided on one side of the sealing cover (7). A locking block (12) is snapped onto one end of the locking strip (11). An air outlet pipe (13) is provided through one side of the filter box (6). A suction fan (14) is fixedly provided on one side of the air outlet pipe (13).

3. The asphalt fume exhaust gas processor with pretreatment function according to claim 1, characterized in that: The spray tower (4) is fixedly equipped with a spraying mechanism. The spraying mechanism includes an infusion tray (15) fixedly installed on the inner wall of the spray tower (4). Two through holes are opened on the surface of the infusion tray (15). Multiple first nozzles (16) are provided through the bottom of the infusion tray (15).

4. The asphalt fume exhaust gas processor with pretreatment function according to claim 3, characterized in that: The bottom of the infusion tray (15) is provided with multiple through pipes (17), and the bottom of each of the multiple through pipes (17) is provided with a conveying ring (18). Multiple second nozzles (19) are provided on one side of the conveying ring (18), and an inlet pipe (20) is provided on one side of the infusion tray (15).

5. The asphalt fume exhaust gas processor with pretreatment function according to claim 1, characterized in that: The inner wall of the spray tower (4) is fixedly provided with two liquid guide plates (21), and the bottom of the spray tower (4) is provided with a liquid outlet pipe (22).

6. The asphalt fume exhaust gas processor with pretreatment function according to claim 1, characterized in that: A conical cylinder (23) is provided through the bottom of the filter cylinder (2), a slag discharge pipe is provided through the bottom of the conical cylinder (23), a main air inlet pipe (24) is provided through one side of the filter cylinder (2), and a conical block (25) is fixedly provided inside the conical cylinder (23).

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