Asphalt flue gas purification device in prebaked anode mixing and kneading process

Abstract

The utility model discloses an asphalt flue gas purification device in a prebaked anode mixing and kneading process, which comprises a purification box body, the lower end of the purification box body is connected with a flue gas inlet pipe, the upper end of the purification box body is connected with a flue gas outlet pipe, a partition plate is fixed at the middle position in the purification box body, and two ends of the partition plate are of conical structures. A partition plate is arranged in the purification box body and divides the interior of the purification box body into two symmetrical purification cavities, an upper row of powder spraying gun sets and a lower row of powder spraying gun sets are arranged on one side in the purification cavities, powder spraying guns in each row of powder spraying gun sets are distributed in the length direction of the outer side of the purification box body at equal intervals, and a first metal wire mesh is arranged below the lower powder spraying gun set. According to the asphalt flue gas purification device in the prebaked anode mixing and kneading process, coke powder serves as an adsorbent, the coke powder makes full contact with tar in asphalt flue gas and is absorbed, the absorbed coke powder serves as a raw material of a prebaked anode to be repeatedly used, and cost is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a flue gas purification technical field, concretely is a kind of pitch flue gas purification device in prebaked anode mixing kneading process. BACKGROUND

[0002] In addition to calcination furnace flue gas and pitch tank flue gas in prebaked anode production process, flue gas generated in mixing and forming process is also the main waste gas pollution source, so it must be paid attention to in environmental protection management process.

[0003] Prebaked anode is with calcined coke, electrolytic aluminum residual pole as raw material, pitch as binder, when heating in production process, pitch flue gas will be generated, this part of pitch flue gas is usually handled together with calcination furnace flue gas, but due to large processing capacity, lead to poor purification effect, therefore need to specially purify pitch flue gas generated in mixing and forming process. SUMMARY

[0004] The utility model solves the technical problems of overcoming the defects of the prior art, providing a pitch flue gas purification device in prebaked anode mixing kneading process, using coke powder as adsorbent, so that coke powder is fully contacted with tar in pitch flue gas and absorbed, and the absorbed coke powder is reused as raw material of prebaked anode, saving cost, and the problems in the background art can be effectively solved.

[0005] To achieve the above object, the utility model provides the following technical scheme: a pitch flue gas purification device in prebaked anode mixing kneading process, including purification box, the lower end of purification box is connected with the flue gas inlet pipe, the upper end of purification box is connected with the flue gas outlet pipe, the middle position in purification box is fixed with the partition, the both ends of partition are conical structure, the partition divides the inside of purification box into two symmetrical purification cavities, one side in purification cavity is provided with two rows of powder injection gun groups, the powder injection guns in each row of powder injection gun groups are distributed along the length direction outside the purification box, the lower side of the lower powder injection gun group is provided with first metal wire mesh, second metal wire mesh is arranged between two powder injection gun groups, the mesh diameter on first metal wire mesh and second metal wire mesh is all greater than the particle size of the injected coke powder, the bottom of purification cavity is provided with return pipe.

[0006] As a preferred technical scheme of the utility model, the first metal wire mesh is arranged obliquely upwards, the second metal wire mesh is arranged obliquely downwards, one end of first metal wire mesh is fixedly connected with partition, and the other end of first metal wire mesh leaves a gap with the inner wall of purification box, one end of second metal wire mesh is fixedly connected with the inner wall of purification box, and the other end of second metal wire mesh leaves a gap with partition.

[0007] As a preferred embodiment of this utility model, a vibration motor is provided at the lower end of both the first and second metal wire meshes.

[0008] As a preferred embodiment of this utility model, the nozzle of the powder spraying gun is an atomizing nozzle, and an impact-resistant plate is fixed on one side of the partition plate, the impact-resistant plate corresponding to the position of the nozzle of the powder spraying gun.

[0009] As a preferred embodiment of this utility model, the nozzle of the powder spraying gun is fixed inside the purification chamber by a sealing ring.

[0010] As a preferred embodiment of this utility model, the upper end of the powder spraying gun is provided with a baffle, which is inclined downward.

[0011] As a preferred embodiment of this utility model, the bottom of the purification chamber is provided with ramps on both sides, the return pipe is provided close to the lower end of the ramps, and the other end of the upper end of the return pipe is provided with an inclined guide plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: The asphalt fume purification device in the prebaked anode mixing process is reasonably designed and ingeniously conceived. By setting the purification chamber in the asphalt fume channel, coke powder is sprayed into the purification chamber through powder spraying guns arranged vertically. By setting the first and second metal wire meshes in the purification chamber, the asphalt fume and coke powder come into contact in their mesh openings, increasing the chance of mutual collision between the fume and the coke powder. This allows the coke powder to fully contact the tar in the asphalt fume, thus purifying the asphalt fume. At the same time, the coke powder that has adsorbed the tar can be used in the production system, reducing purification costs. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model.

[0014] In the diagram: 1 Purification chamber, 2 Smoke inlet pipe, 3 Smoke outlet pipe, 4 Divider plate, 5 Purification chamber, 6 First metal wire mesh, 7 Vibration motor, 8 Powder spraying gun, 9 Second metal wire mesh, 10 Impact-resistant plate, 11 Baffle, 12 Return pipe, 13 Guide plate. Detailed Implementation

[0015] 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 (for ease of description and understanding, hereinafter referred to as...). Figure 1 (The above is described above). Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0016] Referring to Figure 1 The utility model provides a technical scheme: a pitch flue gas purification device in prebaked anode mixing process, including purification box body 1, the lower extreme of purification box body 1 is connected with the flue gas inlet pipe 2, the upper extreme of purification box body 1 is connected with the flue gas outlet pipe 3, according to the flow characteristic of pitch flue gas, make pitch flue gas from the flue gas inlet pipe 2 in the lower portion into purification box body 1 and carry out purification, and the flue gas after purification is discharged from the flue gas outlet pipe 3 in the upper portion,

[0017] The middle position in purification box body 1 is fixed with the partition 4, and the both ends of the partition 4 are conical structures, so that the flue gas entering the purification box body 1 is divided into two parts and enters two purification cavities 5 respectively for flue gas purification, thereby enhancing the purification effect, and the flue gas after purification is gathered to the flue gas outlet pipe 3 for discharge.

[0018] One side of the purification cavity 5 is provided with two rows of powder gun groups, the powder guns 8 in each row of powder gun groups are distributed along the length direction of the outer side of the purification box body 1 at equal intervals, the contact range of the coke powder after being sprayed can be improved by arranging two rows of powder gun groups, the powder guns 8 are horizontally arranged, the nozzles of the powder guns 8 are fixed in the purification box body 1 by sealing rings, the coke powder is sprayed out after being sucked out from the powder bin, contacts and adsorbs the tar in the pitch flue gas, the lower end of the powder gun group located below is provided with a first metal wire mesh 6, a second metal wire mesh 9 is arranged between the two powder gun groups, the mesh diameters of the first metal wire mesh 6 and the second metal wire mesh 9 are both greater than the particle size of the sprayed coke powder, the coke powder can be fully contacted with the pitch flue gas in the mesh by arranging the first metal wire mesh 6 and the second metal wire mesh 9, thereby improving the adsorption efficiency of the coke powder on the tar in the pitch flue gas.

[0019] A return pipe 12 is arranged at the bottom of the purification cavity 5, the coke powder after absorbing the tar is discharged from the return pipe 12 for recycling.

[0020] Further, in order to facilitate the recycling of the coke powder, the first metal wire mesh 6 is arranged in an upwardly inclined manner, the second metal wire mesh 9 is arranged in a downwardly inclined manner, one end of the first metal wire mesh 6 is fixedly connected with the partition 4, a gap is left between the other end of the first metal wire mesh 6 and the inner wall of the purification box body 1, one end of the second metal wire mesh 9 is fixedly connected with the inner wall of the purification box body 1, a gap is left between the other end of the second metal wire mesh 9 and the partition 4, the coke powder can fall to the bottom of the purification box body 1 through the mesh and the gap of the first metal wire mesh 6 and the second metal wire mesh 9, thereby realizing recycling.

[0021] Further, in order to prevent the coke powder from blocking the mesh and facilitate the sinking of the coke powder, a vibration motor 7 is arranged at the lower end of the first metal wire mesh 6 and the second metal wire mesh 9.

[0022] In order to avoid the impact of the sprayed coke powder on the partition plate 4 for a long time, causing the partition plate 4 to be damaged quickly, the nozzle of the powder spraying gun 8 is an atomizing nozzle, and an impact-resistant plate 10 is fixed on one side of the partition plate 4, and the impact-resistant plate 10 corresponds to the position of the nozzle of the powder spraying gun 8.

[0023] In order to prevent the coke powder from accumulating on the nozzle of the powder spraying gun 8, the upper end of the powder spraying gun 8 is provided with a baffle 11, and the baffle 11 is inclined downward.

[0024] In order to facilitate the collection of the falling coke powder, the inside bottom end of the purification box body 1 is provided with a slope on both sides, and the return pipe 12 is arranged close to the lower end of the slope, and the upper end of the return pipe 12 is provided with an inclined guide plate 13 at the other end, and the inclination angle and length of the guide plate 13 can completely guide the sinking coke powder into the return pipe 12 for collection.

[0025] In use: the asphalt flue gas enters into the purification box body 1 from the smoke inlet pipe 2, and is divided into two parts under the partitioning effect of the partition plate 4 and enters into the two purification cavities 5 on both sides, the powder spraying gun 8 is opened, the powder spraying gun 8 sprays the coke powder in the purification cavity 5, so that the coke powder adsorbs the tar in the asphalt flue gas, and the coke powder after adsorption enters into the collection bin through the return pipe 12 for recycling, and the purified asphalt flue gas is discharged from the smoke outlet pipe 3.

[0026] The utility model effectively purifies the asphalt flue gas generated in the mixing process, simultaneously uses the coke powder as an adsorbent, realizes recycling after adsorbing the tar in the asphalt flue gas, reduces the operation cost, and greatly improves the use convenience.

[0027] The part not described in the utility model is prior art, although the embodiments of the utility model have been shown and described, those skilled in the art can understand that the embodiments can be changed, modified, replaced and changed in various ways without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and equivalents thereof.

Claims

1. A pitch fume purification device in a prebaked anode kneading process, comprising a purification box (1), the lower end of the purification box (1) is connected with an inlet smoke pipe (2), the upper end of the purification box (1) is connected with an outlet smoke pipe (3), characterized in that: The purification box (1) is fixed with a partition plate (4) in the middle position, the both ends of the partition plate (4) are conical structure, the partition plate (4) divides the purification box (1) into two symmetrical purification cavities (5), one side of the purification cavity (5) is provided with two rows of powder gun groups, the powder guns (8) in each row of powder gun groups are distributed along the length direction of the outside of the purification box (1) at equal intervals, the lower end of the lower powder gun group is provided with a first metal screen (6), the second metal screen (9) is arranged between the two powder gun groups, the mesh diameters of the first metal screen (6) and the second metal screen (9) are greater than the particle size of the sprayed coke powder, and the bottom of the purification cavity (5) is provided with a return pipe (12).

2. The bitumen fume cleaning device in the prebaked anode kneading process according to claim 1, characterized in that: The first metal screen (6) is arranged in an inclined upward manner, the second metal screen (9) is arranged in an inclined downward manner, one end of the first metal screen (6) is fixedly connected with the partition plate (4), and the other end of the first metal screen (6) is provided with a gap between the inner wall of the purification box (1), one end of the second metal screen (9) is fixedly connected with the inner wall of the purification box (1), and the other end of the second metal screen (9) is provided with a gap between the partition plate (4).

3. The bitumen fume cleaning device in a prebaked anode kneading process according to claim 1 or 2, characterized in that: The lower ends of the first metal screen (6) and the second metal screen (9) are provided with vibration motors (7).

4. The device according to claim 1, characterized in that: The nozzle of the powder gun (8) is an atomizing nozzle, one side of the partition plate (4) is fixedly provided with an impact-resistant plate (10), and the impact-resistant plate (10) corresponds to the position of the nozzle of the powder gun (8).

5. The device according to claim 1 or 4, characterized in that: The nozzle of the powder gun (8) is fixed in the purification box (1) through a sealing ring.

6. The bitumen fume cleaning device in a prebaked anode kneading process according to claim 1 or 4, characterized in that: The upper end of the powder gun (8) is provided with a baffle (11), and the baffle (11) is inclined downward.

7. The device according to claim 1, characterized in that it comprises: The inside bottom ends of the purification box (1) are provided with slopes on both sides, the return pipe (12) is arranged close to the lower end of the slope, and the upper end of the return pipe (12) is provided with an inclined guide plate (13) on the other end. The nozzle of the powder gun (8) is an atomizing nozzle, one side of the partition plate (4) is fixedly provided with an impact-resistant plate (10), and the impact-resistant plate (10) corresponds to the position of the nozzle of the powder gun (8).

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