Asphalt flue gas treatment device

Abstract

The utility model provides an asphalt flue gas treatment device in the technical field of flue gas purification, which comprises a shell, a gas inlet arranged on the side wall of the shell, a spraying cavity arranged at the bottom in the shell, a spraying pipe arranged in the spraying cavity, an adsorption cavity arranged above the spraying cavity, a plurality of positive electrode plates arranged in a staggered manner in the adsorption cavity, and convex sections of the positive electrode plates, negative electrode rods are arranged in the middle below the positive electrode plates, a gas collecting hood is arranged above the shell, and a gas outlet is formed in the top of the gas collecting hood. According to the utility model, the problem of limited treatment effect of the existing flue gas treatment equipment during asphalt flue gas treatment is solved by spraying, cooling and dedusting and then electrostatic field adsorption, the convex positive electrode plates are arranged in a staggered manner, the problems of inconvenience in cleaning smoke dust collected on the surfaces of the electrode plates and high maintenance difficulty are solved, the treatment difficulty of subsequent equipment is reduced, and the working efficiency is improved. Secondary pollution is avoided, and the method has wide popularization and application value in the technical field of flue gas purification.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas purification, in particular to an asphalt flue gas treatment device. Background Art

[0002] Negative electrode material is one of the key materials that determines the energy density of lithium batteries. The main raw materials used in the production of negative electrode materials are needle coke, petroleum coke and solid asphalt. By converting solid asphalt into asphalt with a high softening point through heat and chemical treatment and using it as the coating material for the negative electrode of lithium-ion batteries, the electrochemical performance of the battery can be improved and the battery life can be extended.

[0003] The main production processes for producing asphalt fume include coating granulation, pre-carbonization, secondary coating, and high-temperature carbonization. Its main components are particulate matter, tar fume, carbon ring hydrocarbons, and organic waste gases derived from cyclic hydrocarbons. The current treatment method for asphalt fume is to send it to a secondary buffer tank, desorb it through activated carbon adsorption, and then discharge it into the air after catalytic combustion. Since asphalt fume is mixed with carbon powder and water vapor, it is very easy to cause blockage of exhaust pipes and purification equipment; secondly, the activated carbon adsorption method has the problems of low purification rate and secondary pollution.

[0004] Chinese Patent No.: ZL202222667748.X discloses an asphalt flue gas treatment machine with a dust removal electrostatic field movement function, including a treatment chamber and a No. 1 connecting pipe, one end of the No. 1 connecting pipe is fixedly connected to a pretreatment chamber, one end of the pretreatment chamber is provided with a pipe, a channel is opened inside the pipe, and one end of the treatment chamber is fixedly provided with a No. 2 connecting pipe. This technical solution enables the existing asphalt flue gas treatment machine to have the function of electrostatic field movement through the arrangement of cathode plates, anode plates, air pumps, telescopic rods, push scrapers, dust collection boxes, strip grooves, No. 1 motors and threaded shafts, solving the problem that most existing asphalt flue gas treatment machines use incineration methods, wet methods, dry methods, etc., and the influence of purification effects and cost factors makes conventional methods unable to meet the environmental protection requirements of purification, and because the position of the device is fixed, it cannot do a good job of asphalt. The problem of smoke treatment is solved by arranging a square frame, a filter, a bottom plate, a second motor, a first gear, a second gear, a connecting rod, a fan blade, a baffle and a circular groove, so that the existing asphalt flue gas treatment machine has the function of graded treatment, which solves the problem that the existing asphalt flue gas treatment machine usually treats the flue gas directly, resulting in insufficient asphalt flue gas treatment and excessive residual harmful substances. However, this technical solution adopts a telescopic rod to drive the scraper to scrape the smoke collected on the surface of the anode plate. The cleaning structure is complicated, wear occurs after long-term use, and it is inconvenient to maintain if it is not cleaned; secondly, the temperature of asphalt smoke is high and the composition is complex. The effect of treating asphalt smoke by only using a filter and combining it with an electrostatic field is limited, and the fast flow rate will lead to untimely treatment and secondary pollution, which can easily cause blockage of the smoke exhaust pipe and subsequent treatment equipment. Summary of the Invention

[0005] The technical problem to be solved by the present invention is how to facilitate the cleaning of smoke dust attached to the surface of the electrode plate and how to improve the asphalt fume purification effect. The purpose of the present invention is to provide an asphalt fume treatment device which uses spray dust removal combined with an electrostatic field with convex electrodes to make the smoke dust slide automatically, thereby reducing the difficulty of cleaning and improving the asphalt fume treatment effect.

[0006] The technical solution adopted by the present utility model is: an asphalt flue gas treatment device, including a shell, an air inlet is provided on the side wall of the shell, a spray chamber is provided at the bottom of the shell, a spray pipe is provided in the spray chamber, an adsorption chamber is provided above the spray chamber, and a plurality of staggered positive electrode plates are provided in the adsorption chamber, the cross-sectional shape of the positive electrode plates are all convex, a negative electrode rod is provided in the middle below the positive electrode plates, a gas collecting hood is provided above the shell, and an air outlet is provided on the top of the gas collecting hood.

[0007] The asphalt fume treatment device provided by the utility model can achieve the following beneficial effects:

[0008] (1) The high-temperature asphalt fume is first cooled by spraying through a spray pipe to reduce the temperature of the asphalt fume to below 300°C. At the same time, the humidity is increased to prevent the risk of fire or explosion caused by electric sparks during subsequent processing, thereby reducing the difficulty of subsequent processing. At the same time, most liquid and solid pollutants are washed away by spraying.

[0009] (2) The positive electrode plate and the negative electrode plate are used to charge the tiny dust particles in the remaining flue gas. Under the action of the electric field force, the tiny dust particles move toward the positive electrode plate and accumulate on the inner and outer surfaces of the arc-shaped positive electrode plate. Finally, they fall downward under the action of gravity. Since the cross-sectional shape of the positive electrode plate is convex, it is conducive to the dust particles falling and being discharged downward, avoiding the problem of secondary pollution during cleaning.

[0010] (3) By spraying water and then electrostatically removing dust, it can handle high-concentration asphalt fume. It has a simple structure and few wearing parts. At the same time, it can remove some harmful gases that are easily soluble in water. The electrostatic dust removal of the positive electrode plate and the negative electrode rod can remove a variety of pollutants, avoid the impact of high temperature on subsequent equipment, and extend the maintenance cycle and service life of the equipment.

[0011] Preferably, the middle portion of the cross section of the positive electrode plate is convex upward, and the cross section has an arc shape, an arch shape, a parabola shape or an umbrella shape.

[0012] Preferably, a first conductive plate is provided at one end of the adsorption chamber, one end of each of the positive electrode plates is fixedly connected to the first conductive plate, and a plurality of through holes are provided on the first conductive plate.

[0013] The plurality of positive electrode plates are fixed by the first conductive plate, so that the gaps between the plurality of positive electrode plates are uniform and arranged neatly, and are not easily deformed or offset, which is conducive to capturing asphalt smoke particles in the asphalt smoke.

[0014] Preferably, a second conductive plate is provided at one end of the adsorption chamber away from the first conductive plate, and one end of the negative electrode rod is fixedly connected to the second conductive rod; a plurality of insulating rings are nested on the shells on both sides of the adsorption chamber, the negative electrode rod passes through the through hole and both ends of the negative electrode rod are arranged in the insulating rings.

[0015] The second conductive plate facilitates the connection of multiple negative electrode rods, and the shell fixes both ends of the negative electrode rod to prevent deformation or deviation of the negative electrode rod. The insulating ring prevents the negative electrode rod from conducting electricity with the shell to avoid danger.

[0016] Preferably, a first connecting rod is provided on the top of the first conductive plate; a second connecting rod is provided on the top of the second conductive plate, and one end of the first connecting rod and the second connecting rod both extend outside the shell.

[0017] The positive electrode plate and the negative electrode rod are connected to external high voltage electricity through the first conductive plate, the first connecting rod, the second conductive plate and the second connecting rod.

[0018] Preferably, a first baffle is provided on one side of the spray chamber close to the air inlet, and the first baffle is arranged right in front of the air inlet and the connection point.

[0019] The flow rate of the asphalt smoke is slowed down by the first baffle, and some large particles of pollutants are captured first by changing the flow direction of the asphalt smoke.

[0020] Preferably, a second baffle is provided on a side of the first baffle away from the air inlet, and a top between the second baffle and the first baffle is filled with filler.

[0021] The filler is fixed by the first baffle and the second baffle, so that most of the oil smoke particles, impurities and moisture in the asphalt smoke can be captured by the filler. At the same time, the flow direction of the asphalt smoke is changed again by the second baffle, and the flow rate is slowed down, which is convenient for subsequent oil smoke treatment.

[0022] Preferably, a third baffle is provided above the filler, one end of the third baffle is fixedly connected to the inner wall of the shell, and the other end is tilted downward, and the distance between the end of the third baffle and the shell is greater than the distance between the shell and the edge of the second baffle.

[0023] The top of the filler is shielded by the third baffle to prevent solid or liquid pollutants falling from above from covering the filler from above and thus reducing the service life of the filler.

[0024] Preferably, a guide plate is provided on a side of the second baffle away from the first baffle, and the side of the guide plate away from the first baffle is tilted downward.

[0025] The guide plate can be used to guide solid or liquid pollutants dropped from above to the bottom of the shell.

[0026] Preferably, a plurality of spray heads are evenly arranged on the spray pipe.

[0027] By installing multiple evenly distributed spray heads on the spray pipe, the cleaning efficiency can be improved, and it is also beneficial to optimize the use of water resources and avoid water waste due to uneven spraying.

[0028] Preferably, a water tank is provided on one side outside the shell, a water pump is provided in the water tank, and one end of the spray pipe passes through the water tank and is connected to the water pump in the water tank.

[0029] The water in the water tank is easily transported to the spray pipe at a uniform speed through the water tank and the water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the asphalt fume treatment device of the utility model;

[0032] Figure 2 This is a top view of the asphalt fume treatment device of the utility model;

[0033] Figure 3 This is a new type of asphalt fume treatment device Figure 2 Cross-sectional view at AA in the middle;

[0034] Figure 4 This is a new type of asphalt fume treatment device Figure 2 Cross-sectional view at the middle BB;

[0035] Figure 5 This is a new type of asphalt fume treatment device Figure 2 Cross-sectional view at CC.

[0036] Figure markings: 1-shell, 11-air inlet, 12-air collecting hood, 13-air outlet, 2-spray chamber, 21-first baffle, 22-spray pipe, 221-spray head, 23-second baffle, 24-filler, 25-third baffle, 26-guide plate, 3-adsorption chamber, 31-positive electrode plate, 32-negative electrode rod, 33-first conductive plate, 34-second conductive plate, 35-insulating ring, 36-through hole, 37-first connecting rod, 38-second connecting rod, 4-water tank. DETAILED DESCRIPTION

[0037] The following will be combined with the Figure 1-5 The technical solution of the present invention is described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0038] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0039] Example 1

[0040] The following is further described in conjunction with specific embodiments. Figure 1-5 As shown, this embodiment is an asphalt fume treatment device, comprising a shell 1, an air inlet 11 is provided on the side wall of the shell 1, a spray chamber 2 is provided at the bottom of the shell 1, a spray pipe 22 is provided in the spray chamber 2, an adsorption chamber 3 is provided above the spray chamber 2, a plurality of staggered positive electrode plates 31 are provided in the adsorption chamber 3, the cross-sectional shape of the positive electrode plates 31 are all convex, and a negative electrode rod 32 is provided at the middle part below the positive electrode plates 31, a gas collecting hood 12 is provided above the shell 1, and an air outlet 13 is provided at the top of the gas collecting hood 12. The asphalt fume temperature is first sprayed and cooled by the spray pipe 22 to reduce the temperature. To below 300°C, the humidity is increased to prevent the risk of fire or explosion, reduce the difficulty of subsequent treatment, and at the same time, most liquid and solid pollutants are washed away by spraying; the positive electrode plate 31 and the negative electrode rod 32 are used to make tiny dust particles move toward the positive electrode plate 31 under the action of the electric field force, and accumulate on the inner and outer surfaces of the arc-shaped positive electrode plate 31, and finally fall downward under the action of gravity; by spraying water washing first and then electrostatic dust removal, high-concentration asphalt fume can be treated, and the electrostatic dust removal of the positive electrode plate 31 and the negative electrode rod 32 can remove a variety of pollutants.

[0041] Reference Figure 4 or Figure 5 As shown, in this embodiment, the cross section of the positive electrode plate 31 is one of an arc shape, an arch shape, a parabola shape or an umbrella shape with a middle portion convex upward.

[0042] Reference Figure 4 or Figure 5As shown, in this embodiment, a first conductive plate 33 is provided at one end of the adsorption chamber 3, and one end of the positive electrode plate 31 is fixedly connected to the first conductive plate 33. A plurality of through holes 36 are provided on the first conductive plate 33, and a plurality of positive electrode plates 31 are fixed by the first conductive plate 33, so that the gaps between the plurality of positive electrode plates 31 are uniform, and they are arranged neatly, and are not easily deformed or offset, which is conducive to capturing smoke particles in the asphalt fume.

[0043] Reference Figure 5 As shown, in this embodiment, a second conductive plate 34 is provided at one end of the adsorption chamber 3 away from the first conductive plate 33, and one end of the negative electrode rod 32 is fixedly connected to the second conductive plate 34; a plurality of insulating rings 35 are nested on the shell 1 on both sides of the adsorption chamber 3, and the negative electrode rod 32 passes through the through hole 36 and both ends of the negative electrode rod 32 are arranged in the insulating ring 35 to prevent the negative electrode rod 32 from short-circuiting with the first conductive plate 33 and causing a short circuit. The second conductive plate 34 is used to facilitate the connection of multiple negative electrode rods 32, and at the same time, the two ends of the negative electrode rod 32 are fixed by the shell 1 to prevent the negative electrode rod 32 from being deformed or offset, and the insulating ring 35 is used to prevent the negative electrode rod 32 from conducting electricity with the shell 1 to avoid danger.

[0044] Reference Figure 5 As shown, in this embodiment, a first connecting rod 37 is provided on the top of the first conductive plate 33; a second connecting rod 38 is provided on the top of the second conductive plate 34, and one end of the first connecting rod 37 and the second connecting rod 38 are extended to the outside of the shell 1, so that the positive electrode plate 31 and the negative electrode rod 32 can be connected to the external high voltage through the first conductive plate 33, the first connecting rod 37, the second conductive plate 34 and the second connecting rod 38.

[0045] Reference Figure 3 As shown, in this embodiment, a first baffle 21 is provided on one side of the spray chamber 2 close to the air inlet 11. The first baffle 21 is arranged just in front of the air inlet 11 and the connection point. The first baffle 21 slows down the flow rate of the asphalt smoke and changes the flow direction of the asphalt smoke, and can first capture some large particles or heavier pollutants.

[0046] Reference Figure 3 As shown, in this embodiment, a second baffle 23 is provided on the side of the first baffle 21 away from the air inlet 11, and the top between the second baffle 23 and the first baffle 21 is filled with a filler 24. The filler 24 is fixed by the first baffle 21 and the second baffle 23, so that most of the oil fume particles, impurities and moisture in the asphalt fume can be captured by the filler 24. At the same time, the flow direction of the asphalt fume is changed again by the second baffle 23, and the flow rate is slowed down to facilitate subsequent processing.

[0047] Reference Figure 3As shown, in this embodiment, a third baffle 25 is provided above the filler 24, one end of the third baffle 25 is fixedly connected to the inner wall of the shell 1, and the other end is tilted downward, and the distance between the end of the third baffle 25 and the shell 1 is greater than the distance between the shell 1 and the edge of the second baffle 23. The third baffle 25 blocks the top of the filler 24 to prevent solid or liquid pollutants falling from above from covering the filler 24 from above, thereby reducing the service life of the filler 24.

[0048] Reference Figure 3 As shown, in this embodiment, a guide plate 26 is provided on the side of the second baffle 23 away from the first baffle 21. The guide plate 26 is tilted downward on the side away from the first baffle 21. The guide plate 26 facilitates guiding solid or liquid contaminants falling from above to the bottom of the shell 1.

[0049] Reference Figure 4 As shown, in this embodiment, a plurality of spray heads 221 are evenly arranged on the spray pipe 22. By installing a plurality of evenly distributed spray heads 221 on the spray pipe 22, the cleaning efficiency can be improved, and it is also beneficial to optimize the use of water resources and avoid water waste due to uneven spraying.

[0050] Reference Figure 1 and Figure 2 As shown, in this embodiment, a water tank 4 is provided on one side outside the shell 1, and a water pump is provided in the water tank 4. One end of the spray pipe 22 passes through the water tank 4 and is connected to the water pump in the water tank 4. The water in the water tank 4 is easily transported to the spray pipe 22 at a uniform speed through the water tank 4 and the water pump.

[0051] Example 2

[0052] During use, asphalt fume containing carbon powder, water vapor and other solid and liquid impurities enters the spray chamber 2 in the shell 1 from the air inlet 11 under the action of suction and extraction, and the gas flow rate is reduced by the first baffle 21 directly opposite the air inlet 11. At the same time, asphalt fume washing water is continuously sprayed through multiple spray heads 221 on the spray pipe 22 above the outlet of the first air inlet 11. After the spraying is cooled and dusted, and most of the solid impurities and water-soluble organic waste gas are removed, the remaining gas moves upward and is filtered by the filler 24 between the first baffle 21 and the second baffle 23. The gas moves upward again and enters between the positive electrode plate 31 and the negative electrode rod 32. By connecting the high-voltage DC power supply to the positive electrode plate 31 and the negative electrode rod 32, due to The voltage difference is very large, which generates a strong electric field around the negative electrode rod 32, causing the air to be ionized and generating a large number of positive and negative ions. When the flue gas passes through, the tiny solid and liquid pollutants in the flue gas are positively or negatively charged. Under the action of the electric field force, the charged pollutants move toward the positive electrode plate 31 and the negative electrode rod 32, and eventually lose their charge and are deposited on the surface of the positive electrode plate 31 and the negative electrode rod 32, and then fall downward under the action of gravity. Since the cross-sectional shape of the positive electrode plate 31 is convex and the positive electrode plates 31 are staggered, it is conducive to the deposited particulate impurities falling downward layer by layer, and finally falling on the surface of the third baffle 25 or the guide plate 26, and falling downward along the inclined surface of the upper surface of the third baffle 25 and the guide plate 26 to be discharged.

[0053] By spraying, filtering, and then electrostatic adsorption, most of the particulate matter, tar fume, and water-soluble organic waste gas in the asphalt flue gas can be removed. The deposited particulate impurities do not need to be repeatedly flushed or vibrated, which extends the service life of the equipment, reduces the difficulty of subsequent activated carbon adsorption and catalytic combustion, effectively prevents the exhaust pipe from being blocked, and prevents the risk of fire or explosion in subsequent equipment. It has broad promotion and application value in the field of flue gas purification technology.

[0054] Directional terms used in this disclosure, such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," to indicate positions or locations, are based on the positions or locations shown in the accompanying drawings and are intended solely to facilitate and simplify the description of this disclosure. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and are therefore not to be construed as limitations on this disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

[0055] The standard parts used in this application document can all be purchased from the market and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An asphalt fume treatment device, comprising a housing (1), characterized in that: An air inlet (11) is provided on the side wall of the shell (1), a spray chamber (2) is provided at the bottom of the shell (1), a spray pipe (22) is provided in the spray chamber (2), an adsorption chamber (3) is provided above the spray chamber (2), a plurality of staggered positive electrode plates (31) are provided in the adsorption chamber (3), the cross-section of each positive electrode plate (31) is convex, and a negative electrode rod (32) is provided in the middle below each positive electrode plate (31), a gas collecting hood (12) is provided above the shell (1), and an air outlet (13) is provided at the top of the gas collecting hood (12); a first baffle (21) is provided on the side of the spray chamber (2) close to the air inlet (11), and the first baffle (21) is arranged in front of the air inlet (11) and the connection point; a second baffle (23) is provided on the side of the first baffle (21) away from the air inlet (11), and a filler (24) is filled at the top between the second baffle (23) and the first baffle (21).

2. The asphalt fume treatment device according to claim 1, characterized in that: A first conductive plate (33) is provided at one end of the adsorption chamber (3), one end of each of the positive electrode plates (31) is fixedly connected to the first conductive plate (33), and a plurality of through holes (36) are provided on the first conductive plate (33).

3. The asphalt fume treatment device according to claim 2, characterized in that: A second conductive plate (34) is provided at one end of the adsorption chamber (3) away from the first conductive plate (33), and one end of the negative electrode rod (32) is fixedly connected to the second conductive plate (34); a plurality of insulating rings (35) are nested on the shell (1) on both sides of the adsorption chamber (3), the negative electrode rod (32) passes through the through hole (36), and both ends of the negative electrode rod (32) are arranged in the insulating rings (35).

4. The asphalt fume treatment device according to claim 3, characterized in that: A first connecting rod (37) is provided on the top of the first conductive plate (33); a second connecting rod (38) is provided on the top of the second conductive plate (34), and one end of each of the first connecting rod (37) and the second connecting rod (38) extends outside the housing (1).

5. The asphalt fume treatment device according to claim 1, characterized in that: A third baffle (25) is provided above the filler (24), one end of the third baffle (25) is fixedly connected to the inner side wall of the shell (1), and the other end is tilted downward, and the distance between the end of the third baffle (25) and the shell (1) is greater than the distance between the shell (1) and the edge of the second baffle (23).

6. The asphalt fume treatment device according to claim 5, characterized in that: A guide plate (26) is provided on a side of the second baffle (23) away from the first baffle (21), and the side of the guide plate (26) away from the first baffle (21) is tilted downward.

7. The asphalt fume treatment device according to claim 6, characterized in that: A plurality of spray heads (221) are evenly arranged on the spray pipe (22).

8. The asphalt fume treatment device according to claim 1, characterized in that: A water tank (4) is provided on one side outside the housing (1), a water pump is provided in the water tank (4), and one end of the spray pipe (22) passes through the water tank (4) and is connected to the water pump.

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