An offline flue gas purification device for material recycling

Abstract

This utility model discloses an offline flue gas purification device for material recycling, comprising a vertically arranged outer shell. Multiple partition layers are horizontally arranged at vertical intervals within the inner cavity between the air inlet and outlet at the upper and lower ends of the outer shell. Each partition layer includes a short filter plate and a long partition plate respectively positioned opposite each other on the left and right sides. A rotating shaft is located in the middle of the long partition plate above the bottom layer, allowing for rotatable installation. The short filter plates and long partition plates of each partition layer are staggered from bottom to top. An inclined filter plate extends diagonally downwards from the suspended side of each short filter plate in the second and uppermost partition layers. A discharge port with a switch valve is installed on the outer shell on one side of the short filter plate of the bottom partition layer, and a feed port with a switch valve is installed on the outer shell on one side of the short filter plate of the top partition layer. This utility model has the advantages of simple structure, convenient operation, low cost, and improved packing utilization and replacement efficiency.

Description

Technical Field

[0001] This utility model relates to the field of flue gas purification technology, and in particular to an offline flue gas purification device for material recycling. Background Technology

[0002] Industrial flue gas contains a large amount of harmful pollutants such as nitrogen oxides (NOx), sulfur oxides (SOx) and particulate matter, which need to be filtered and purified by filtration devices such as purification towers before being discharged.

[0003] Traditional flue gas purification and filtration devices, such as purification towers, use fixed packed beds for purification. This means the flue gas purification packing is horizontally laid on a fixed filter layer to form a packed bed, and the flue gas is controlled to pass vertically through the bed for purification. To improve purification efficiency, the packed bed is usually configured with multiple layers at intervals. This traditional fixed-bed structure requires offline replacement of the packing after it deactivates, resulting in a recurring problem. Furthermore, the packing is often replaced all at once, but the different concentrations of flue gas exposed to each layer cause varying degrees of deactivation, leading to low packing utilization efficiency and significant waste.

[0004] Existing technologies also include some flue gas purification methods using moving packed beds. For example, CN108786438A disclosed a flue gas denitrification method and reactor, which specifically disclosed a catalyst circulation and moving flue gas treatment device composed of a conveyor belt drive wheel, a conveyor belt, a catalyst inlet pipe, a catalyst outlet pipe, and a catalyst hopper. This technology enables online packing replacement, and packing with a high degree of deactivation can be automatically discharged from the end of the conveyor belt, resulting in high packing utilization efficiency. However, due to the need for precise electrical control, it suffers from drawbacks such as complex structure, inconvenient control, poor stability, and high application cost.

[0005] Traditional fixed-bed packing systems remain the mainstream choice for flue gas purification due to their simple structure, convenient operation, stable performance, and low cost. Therefore, designing a solution that enables packing material recycling to improve utilization efficiency and facilitates packing material replacement, based on the principles of traditional fixed-bed systems, is a problem that needs to be considered and solved by those skilled in the art. Utility Model Content

[0006] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is: how to provide an offline flue gas purification device that is simple in structure, easy to operate, low in cost, and can better improve the utilization efficiency of packing and facilitate the material recycling of packing replacement.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] An offline flue gas purification device for material recycling includes a vertically arranged outer shell with an air inlet and an air outlet at its upper and lower ends, respectively. Multiple partition layers are horizontally arranged in the inner cavity of the outer shell between the air inlet and the air outlet, spaced at intervals along the vertical direction. The device is characterized in that each partition layer includes a short filter plate and a long partition plate (meaning the filter plate's dimension in the left-right direction is smaller than the partition plate's dimension in the left-right direction) respectively arranged opposite each other on the left and right sides. The short filter plate is fixed to the inner wall of the outer shell, with its side adjacent to the long partition plate suspended. The lowest long partition plate is fixed to the inner wall of the outer shell. The remaining long partition plates have a rotating shaft perpendicular to the left-right direction at their midpoint in the left-right direction and are rotatably mounted on the inner side of the outer shell. On the wall, one end of the rotating shaft extends outward from the outer shell and is equipped with a rotation control mechanism; the short filter plates and long partitions of each partition layer are staggered from bottom to top; from the second partition layer above the bottom, each short filter plate has an inclined filter plate extending diagonally downward from its suspended side, with the lower end of the inclined filter plate overlapping the junction of the long partition and the short filter plate in the next partition layer; the lowest inclined filter plate is fixed, while the upper ends of the remaining inclined filter plates are rotatably connected to the suspended sides of the corresponding short filter plates; the short filter plates and inclined filter plates are evenly distributed with air pores smaller than the particle size of the filler; the outer shell of the short filter plate in the lowest partition layer is equipped with a discharge port with a switch valve, and the outer shell of the short filter plate in the highest partition layer is equipped with a feed port with a switch valve.

[0009] In operation, the inner ends of each long partition are rotated upwards by the control mechanism, lifting and opening the lower end of the inclined filter plate. The purification packing enters the uppermost short filter plate through the feed inlet, pushing it inwards and into the inclined filter plate. Under the continuous feeding force, it slides down the inclined filter plate to the next layer of short filter plates, impacts the inner wall of the outer shell, and bounces back into the inclined filter plate of that layer. (The friction force between the upper surface of the inclined filter plate and the packing is adjusted so that the packing can slide down under the continuous feeding force, but stops sliding after feeding stops. The friction force can be adjusted by setting the vent holes and the shape and size of the packing.) The packing gradually slides down to each layer to achieve material laying, until the packing reaches the lowermost short filter plate and completes the laying. At this point, feeding stops, and the material no longer slides down. Then, the inner ends of each long partition are rotated downwards to reset, so that the inner ends of the long partitions and the lower ends of the upper inclined filter plates overlap and abut against the upper end of the current inclined filter plate, restoring the partition and completing the material laying. After the material is laid, during purification, the flue gas is controlled to enter from the (bottom) inlet, pass through the short filter plate of the (bottommost) layer into the filtration space, then horizontally pass through the inclined filter plate of that layer, and then enter the second layer through the short filter plate of the second layer, and so on, continuously passing through each layer of short filter plates and inclined filter plates. The flue gas flows upward in an S-shape and finally reaches the outlet. This prolongs the residence time of the flue gas in the filtration area and increases the contact area between the flue gas and the packing layer, thereby improving the purification efficiency. At the same time, after a period of purification, when the bottom layer of packing becomes inactive, the feeding can be restarted, and the packing can be controlled to gradually flow downward along each layer, stopping when the bottom layer of packing flows out of the outlet. This allows for the recycling of materials from top to bottom, avoiding the defects of conventional fixed packing bed structures that easily lead to packing waste, and greatly improving the utilization efficiency of the packing.

[0010] Furthermore, the air inlet is located at the bottom, and the air outlet is located at the top. This makes it easier for air to enter and exit.

[0011] Furthermore, the rotation control mechanism is a rotary motor. This makes it easier to achieve electric control of the rotation of the long partition.

[0012] Furthermore, when each long partition rotates to a horizontal position, its outer upper surface comes into contact with a sealing plate located on the inner wall of the outer casing adjacent above. This allows for better sealing when each long partition rotates to a horizontal position, preventing the outer ends of the long partitions from continuing to rotate upwards under intake pressure.

[0013] Furthermore, the sealing plate is made of rubber material, which can better ensure the sealing effect.

[0014] Furthermore, a feeding platform is attached to the outer side of the outer casing outside the feed inlet. This allows workers to stand on the feeding platform to operate the feeding process.

[0015] Furthermore, a discharge platform is attached to the outer side of the outer casing outside the discharge port. This allows workers to stand on the discharge platform to operate the discharge.

[0016] Furthermore, a transparent observation window is vertically provided on the side wall of the outer casing. This allows for better observation and assessment of the internal material flow during loading and unloading.

[0017] Furthermore, the horizontal cross-section of the outer casing is rectangular. This facilitates the rotation control of the long partition and the inclined filter plate.

[0018] In summary, this utility model has the advantages of simple structure, convenient operation, low cost, and the ability to better improve the utilization efficiency and replacement efficiency of packing. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the preferred embodiment of the device of this utility model, in which the long partition is in a horizontal closed state.

[0020] Figure 2 for Figure 1 A schematic diagram of the structure that controls the inner ends of each long partition to rotate upwards to the open state.

[0021] Figure 3 for Figure 1 A horizontal cross-sectional view along the top-down direction. Detailed Implementation

[0022] The present invention will now be described in further detail with reference to specific embodiments.

[0023] Optimal Implementation: See Figure 1-3An offline flue gas purification device for material recycling includes a vertically arranged outer shell 1. An air inlet 2 and an air outlet 3 are respectively located at the upper and lower ends of the outer shell 1. Multiple partition layers are horizontally arranged in the inner cavity of the outer shell between the air inlet 2 and the air outlet 3, spaced at intervals along the vertical direction. The device is characterized in that each partition layer includes a short filter plate 4 and a long partition plate 5 (meaning the size of the filter plate in the left-right direction is smaller than the size of the partition plate in the left-right direction) respectively arranged opposite each other on the left and right sides. The short filter plate 4 is fixed to the inner wall of the outer shell, with the side adjacent to the long partition plate 5 suspended. The lowest long partition plate 5 is fixed to the inner wall of the outer shell 1. The remaining long partition plates 5 have a rotating shaft 6 perpendicular to the left-right direction at the middle position in the left-right direction and are rotatably installed inside the outer shell. On the side wall of the cavity, one end of the rotating shaft 6 extends outward from the outer shell and is equipped with a rotation control mechanism 7; the short filter plates 4 and long partition plates 5 of each partition layer are staggered from bottom to top; from the second partition layer and each partition layer above it, a slanted filter plate 8 extends obliquely downward from the suspended side of the short filter plate, the lower end of the slanted filter plate 8 overlaps with the junction of the long partition plate and the short filter plate in the next partition layer, the lowest slanted filter plate is fixed, and the upper ends of the remaining slanted filter plates are rotatably connected to the suspended side of the corresponding short filter plate; the short filter plates 4 and slanted filter plates 8 are evenly distributed with air pores with a pore size smaller than the particle size of the filler; the outer shell of the short filter plate of the lowest partition layer is equipped with a discharge port 9 with a switch valve, and the outer shell of the short filter plate of the highest partition layer is equipped with a feed port 10 with a switch valve.

[0024] In operation, the inner ends of each long partition are rotated upwards by the control mechanism, lifting and opening the lower end of the inclined filter plate. The purification packing enters the uppermost short filter plate through the feed inlet, pushing it inwards and into the inclined filter plate. Under the continuous feeding force, it slides down the inclined filter plate to the next layer of short filter plates, impacts the inner wall of the outer shell, and bounces back into the inclined filter plate of that layer. (The friction force between the upper surface of the inclined filter plate and the packing is adjusted so that the packing can slide down under the continuous feeding force, but stops sliding after feeding stops. The friction force can be adjusted by setting the vent holes and the shape and size of the packing.) The packing gradually slides down to each layer to achieve material laying, until the packing reaches the lowermost short filter plate and completes the laying. At this point, feeding stops, and the material no longer slides down. Then, the inner ends of each long partition are rotated downwards to reset, so that the inner ends of the long partitions and the lower ends of the upper inclined filter plates overlap and abut against the upper end of the current inclined filter plate, restoring the partition and completing the material laying. After the material is laid, during purification, the flue gas is controlled to enter from the (bottom) inlet, pass through the short filter plate of the (bottommost) layer into the filtration space, then horizontally pass through the inclined filter plate of that layer, and then enter the second layer through the short filter plate of the second layer, and so on, continuously passing through each layer of short filter plates and inclined filter plates. The flue gas flows upward in an S-shape and finally reaches the outlet. This prolongs the residence time of the flue gas in the filtration area and increases the contact area between the flue gas and the packing layer, thereby improving the purification efficiency. At the same time, after a period of purification, when the bottom layer of packing becomes inactive, the feeding can be restarted, and the packing can be controlled to gradually flow downward along each layer, stopping when the bottom layer of packing flows out of the outlet. This allows for the recycling of materials from top to bottom, avoiding the defects of conventional fixed packing bed structures that easily lead to packing waste, and greatly improving the utilization efficiency of the packing.

[0025] The air inlet 2 is located at the bottom, and the air outlet 3 is located at the top. This makes it easier for air to enter and exit.

[0026] The rotation control mechanism 7 is a rotary motor. This makes it easier to achieve electric control of the rotation of the long partition.

[0027] When each long partition 5 rotates to a horizontal position, its outer upper surface fits against a sealing plate 11 located on the inner wall of the outer casing adjacent above it. This allows for better sealing when each long partition rotates to a horizontal position, preventing the outer ends of the long partitions from continuing to rotate upwards under intake pressure.

[0028] The sealing plate 11 is made of rubber material, which can better ensure the sealing effect.

[0029] A feeding platform 12 is attached to the outer side of the outer casing of the feed inlet 10. This allows workers to stand on the feeding platform to operate the feeding.

[0030] A discharge platform 13 is attached to the outer side of the outer casing of the discharge port 9. This allows workers to stand on the discharge platform to operate the discharge.

[0031] The outer casing 1 has a vertically arranged observation window made of transparent material (not shown in the figure) on its side wall. This allows for better observation and judgment of the internal material flow during material feeding and discharging.

[0032] The outer casing 1 has a rectangular horizontal cross-section. This facilitates the rotation control of the long partition and the inclined filter plate.

Claims

1. An offline flue gas purification device for material recycling, comprising a vertically arranged outer shell, with an air inlet and an air outlet respectively provided at the upper and lower ends of the outer shell, and a plurality of partition layers arranged horizontally at intervals along the vertical direction within the inner cavity of the outer shell between the air inlet and the air outlet, characterized in that, Each partition layer includes a short filter plate and a long partition plate respectively arranged opposite each other on the left and right sides. The short filter plate is fixed to the inner wall of the outer shell, and the side adjacent to the long partition plate is suspended. The long partition plate at the bottom layer is fixed to the inner wall of the outer shell. The long partition plates of the remaining layers have a rotating shaft perpendicular to the left and right direction at the middle position in the left and right direction, and are rotatably mounted on the inner wall of the outer shell. One end of the rotating shaft extends outward from the outer shell and is equipped with a rotation control mechanism. The short filter plates and long partition plates of each partition layer are staggered from bottom to top. From bottom to top, the second and the uppermost layers are arranged alternately. Each partition layer has a short filter plate that extends downwards from its suspended side, with the lower end of the inclined filter plate overlapping the junction of the long partition plate and the short filter plate in the next partition layer. The lowest inclined filter plate is fixed, while the upper ends of the remaining inclined filter plates are rotatably connected to the suspended sides of the corresponding short filter plates. The short filter plates and inclined filter plates are evenly distributed with air pores smaller than the particle size of the packing material. The outer shell of the short filter plate in the lowest partition layer is equipped with a discharge port with a switch valve, and the outer shell of the short filter plate in the uppermost partition layer is equipped with a feed port with a switch valve.

2. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, The air inlet is located at the bottom, and the air outlet is located at the top.

3. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, The rotation control mechanism is a rotary motor.

4. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, When each long partition is rotated to a horizontal position, its outer end upper surface is in contact with a sealing plate located on the inner wall of the outer shell adjacent above.

5. The offline flue gas purification device for material recycling as described in claim 4, characterized in that, The sealing plate is made of rubber material.

6. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, A feeding platform is attached to the outer side of the outer shell outside the feed inlet.

7. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, A discharge platform is attached to the outer side of the outer shell outside the discharge port.

8. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, The outer casing has a vertically arranged observation window made of transparent material on its side wall.

9. The offline flue gas purification device for material recycling as described in claim 1, characterized in that, The outer shell has a rectangular horizontal cross-section.

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