Alternating electromagnetic force dust capture system

Abstract

The application relates to an alternating electromagnetic force dust capturing system, which comprises a flue gas inlet, a flue wall, a flue gas outlet, a cleaning pool, a heating and drying assembly, steel wire rubber particles, a steel wire rubber particle outlet, a double-layer mesh grid, a steel wire rubber particle spiral magnetic field assembly, a steel wire rubber particle collecting magnetic field assembly and a flue gas deflector. The double-layer mesh grid is arranged at the top of the flue wall, the flue gas outlet and the steel wire rubber particle outlet are both located above the double-layer mesh grid, the number of the steel wire rubber particle spiral magnetic field assemblies is multiple, each steel wire rubber particle spiral magnetic field assembly is distributed around the flue wall from top to bottom, and the steel wire rubber particle spiral magnetic field assemblies jointly generate a magnetic field force for guiding the steel wire rubber particles to move in a spiral shape from top to bottom. The steel wire rubber particle collecting magnetic field assembly is located at the bottom of the flue wall and is connected with the cleaning pool through a pipeline, and is used for generating a magnetic field force towards the pipeline direction. Compared with the prior art, the application has the advantages of high dust removal efficiency, automatic cyclic treatment, use of multiple dust removal working conditions and the like.

Description

Technical Field

[0001] This invention relates to the field of dust capture equipment, and in particular to an alternating electromagnetic force dust capture system. Background Technology

[0002] Coal combustion produces a large amount of dust particles, the size of which is generally between 100 and 0.01 μm. Dust particles larger than 10 μm are easy to separate, but dust particles with a diameter of 0.1 to 10 μm, especially fine dust particles smaller than 1 μm, are more difficult to separate and are currently the main research focus.

[0003] Currently, the main technologies using magnetic fields for dust removal are electromagnetic dust removal and magnetic separation. Electromagnetic dust removal technology is based on the theory of electric drift of charged particles. When using electromagnetic electrostatic dust removal for air purification, magnetic fields in different directions are applied to achieve higher purification efficiency.

[0004] Electromagnetic dust removal technology passively adsorbs dust, while magnetic separation technology has excessively high requirements regarding whether the dust is magnetic.

[0005] In response, the invention disclosed in CN108816513A presents a multi-stage alternating capture magnetic dust collection system. The system comprises a multi-stage alternating electromagnetic zone evenly distributed around the flue wall, connected to a magnetic steel body distribution system. The magnetic steel body distribution system distributes magnetic steel bodies to the multi-stage alternating electromagnetic zone through regulating valves at the inlet of each stage of the magnetic steel body. An intermediate magnetic steel body storage tank is located at the bottom of the flue wall. A magnetic steel body cleaning zone is connected to the bottom of the intermediate magnetic steel body storage tank. A heating and drying zone is located at the bottom of the cleaning zone and connected to the magnetic steel body distribution system. The flue gas inlet is located on a branch pipe between the bottom of the flue wall and the intermediate magnetic steel body storage tank. After entering the branch pipe through the flue gas inlet, the flue gas flows upward from bottom to top, making full contact with the magnetic steel bodies. Dust adheres to the magnetic steel bodies and is discharged into the atmosphere from the flue gas outlet at the top of the flue wall.

[0006] This scheme uses a multi-stage alternating electromagnetic field to suspend a magnetic steel body within the field by controlling the magnetic force, thus capturing dust within the magnetic field. Once the dust captured by the magnetic steel body in the multi-stage alternating electromagnetic field becomes saturated, the flue gas inlet regulating valve is closed, and the magnetic steel body is collected for processing. However, this dust capture process requires constant monitoring of the magnetic steel body's dust collection status and real-time control of the flue gas inlet regulating valve, making it time-consuming and labor-intensive. Furthermore, the dust capture effectiveness depends heavily on the level of attention paid to the magnetic steel body, and the results are not guaranteed. Summary of the Invention

[0007] The purpose of this invention is to overcome the shortcomings of the prior art, which requires constant attention to the dust capture of the magnet, and is time-consuming and labor-intensive, by providing an alternating electromagnetic force dust capture system.

[0008] The objective of this invention can be achieved through the following technical solutions:

[0009] An alternating electromagnetic force dust capture system includes a flue gas inlet, a flue wall, a flue gas outlet, a cleaning tank, and a heating and drying assembly. The system also includes steel wire granules, a steel wire granule outlet, a double-layer mesh grid, a steel wire granule spiral magnetic field assembly, a steel wire granule collecting magnetic field assembly, and a flue gas guide plate.

[0010] The double-layer mesh grille is installed at the top of the flue wall, and the flue gas outlet and the steel wire granule outlet are both located above the double-layer mesh grille; there are multiple steel wire granule spiral magnetic field components, each distributed from top to bottom around the perimeter of the flue wall, which together generate a magnetic force to guide the steel wire granules to move in a spiral shape from top to bottom; the steel wire granule collecting magnetic field component is located at the bottom of the flue wall and is connected to the cleaning tank through a pipe, which is used to generate a magnetic force in the direction of the pipe; the flue gas guide plate surrounds the outside of the flue gas inlet.

[0011] Furthermore, the steel wire granule spiral magnetic field assembly is a magnetic field assembly that generates a horizontal magnetic field force. Two adjacent steel wire granule spiral magnetic field assemblies are positioned opposite each other in the horizontal direction and at different heights in the vertical direction, and generate opposite magnetic fields in the horizontal direction respectively.

[0012] Furthermore, the flue wall is evenly divided into multiple sub-regions along the circumferential direction, and each steel wire granule spiral magnetic field component is located in half of the corresponding sub-region.

[0013] Furthermore, the system also includes a fan that is connected to the steel wire granule outlet and the heating and drying assembly via pipes, with the output end of the fan facing the steel wire granule outlet.

[0014] Furthermore, the heating and drying assembly includes a hot air outlet and a vibrating grid screen, with the hot air outlet facing the output end of the vibrating grid screen and the fan.

[0015] Furthermore, the double-layer mesh grid comprises two layers of mesh grids arranged in a staggered manner.

[0016] Furthermore, the steel wire granules have a spherical structure, comprising a core and steel wires wrapped around the core, wherein the core is a heat-resistant material.

[0017] Furthermore, the flue gas outlet is located at the bottom of the flue wall, and the flue gas guide plate is a structure that guides the gas to flow in a swirling manner.

[0018] Furthermore, the system also includes a stirring device, the output of which is located inside the cleaning tank.

[0019] Furthermore, the flue gas output from the flue gas inlet flows upward in a swirling pattern, and the steel wire granules released from the steel wire granule outlet fall into the double-layer mesh grid. After passing through the double-layer mesh grid, they fall from top to bottom and are horizontally deflected by the magnetic force generated by the spiral magnetic field components of each steel wire granule during the descent. The whole thing moves in a spiral shape from top to bottom and is finally attracted by the magnetic force of the steel wire granule collecting magnetic field component and enters the cleaning tank.

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] (1) The novel capture-type magnetic field dust removal system adopted in this invention adopts a combination of magnetic field and opens up a new dust removal method, which makes up for the shortcomings of traditional electrostatic dust removal and bag passive dust removal. Specifically, the flue gas is guided to flow from bottom to top in a swirling shape by the flue gas guide plate; steel wire granules are used to actively capture dust from top to bottom and the magnetic field is controlled to guide the steel wire granules to move in a spiral line from top to bottom, so as to fully mix with the flue gas and achieve dust removal.

[0022] This solution can flexibly adjust the movement trajectory of steel wire granules in the flue by controlling the magnetic field, making it suitable for a wider range of industries and conditions. At the same time, the steel ball granules and magnetic field can be adjusted for different conditions to adapt to various working conditions.

[0023] (2) The present invention collects steel wire granules at the bottom of the flue by means of a magnetic field. After cleaning, the granules are connected to the outlet of the steel wire granules with a heating and drying component and a fan, so that the steel wire granules can be recycled. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of an alternating electromagnetic force dust capture system provided in an embodiment of the present invention;

[0025] Figure 2 This is a top view of the internal structure of a flue wall provided in an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of the structure of a steel wire granule provided in an embodiment of the present invention;

[0027] In the diagram, 1 is the flue gas inlet, 2 is the spiral magnetic field assembly of steel wire granules, 3 is the steel wire granules, 301 is the core, 302 is the steel wire, 4 is the double-layer mesh grid, 5 is the flue gas outlet, 6 is the steel wire granule collecting magnetic field assembly, 7 is the flue gas guide plate, 8 is the cleaning tank, 9 is the stirring device, 10 is the heating and drying assembly, 11 is the fan, and 12 is the steel wire granule outlet. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0030] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0031] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this invention is usually placed during use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] It should be noted that terms such as "horizontal" and "vertical" do not mean that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] Example 1

[0034] like Figure 1 As shown, this embodiment provides an alternating electromagnetic force dust capture system, including a flue gas inlet 1, a flue wall 13, a flue gas outlet 5, a cleaning tank 8, a heating and drying assembly 10, steel wire granules 3, steel wire granule outlet 12, a double-layer mesh grid 4, a steel wire granule spiral magnetic field assembly 2, a steel wire granule collecting magnetic field assembly 6, and a flue gas guide plate 7.

[0035] A double-layer mesh grille 4 is installed at the top of the flue wall 13, and the flue gas outlet 5 and the steel wire granule outlet 12 are both located above the double-layer mesh grille 4; there are multiple steel wire granule spiral magnetic field components 2, and each steel wire granule spiral magnetic field component 2 is distributed from top to bottom around the inside of the flue wall 13, which together generate a magnetic field force to guide the steel wire granules 3 to move in a spiral line from top to bottom; the steel wire granule collecting magnetic field component 6 is located at the bottom of the flue wall 13 and is connected to the cleaning tank 8 through a pipe, which is used to generate a magnetic field force in the direction of the pipe; the flue gas guide plate 7 surrounds the outside of the flue gas inlet 1.

[0036] Preferably, in order to achieve the automatic circulation treatment of the steel wire granules 3, the system further includes a fan 11, which is connected to the steel wire granule outlet 12 and the heating and drying assembly 10 through pipes, and the output end of the fan 11 faces the steel wire granule outlet 12.

[0037] The flue gas treatment process is as follows: the flue gas passes through the flue gas guide plate 7 arranged at the end of the flue gas inlet 1. The resulting swirling flue gas comes into full contact with the steel wire granules 3 from bottom to top. The dust in the flue gas adheres to the steel wire granules, and the rest of the flue gas is discharged into the atmosphere from the flue gas outlet 5.

[0038] The processing flow of steel wire granules 3: Driven by hot air, steel wire granules 3 fall irregularly from steel wire granule outlet 12 into double-layer mesh grid 4. After a brief interception by the double-layer mesh grid 4, they initially fall freely from a high point in the flue. Under the magnetic force generated by the spiral magnetic field component 2, they move from top to bottom. After being subjected to the magnetic force, the steel wire granules 3 deviate horizontally and are then deviated again by the opposite magnetic force in the next magnetic field zone, ultimately moving in a spiral pattern from top to bottom. The steel wire granules come into full contact with the flue gas fed from bottom to top. After adhering to the dust particles in the flue gas, they are all collected by the steel wire granule collecting magnetic field component 6 at the end of the flue. After the magnetic field is briefly eliminated, the granules fall into the cleaning tank 8 from the tail of the flue. The cleaning tank is filled with flowing water. Under the action of the stirring device 9, the dust particles carried on the steel wire granules 3 are separated from the surface steel wire. The separated steel wire granules are sent to the drying zone 10 and dried under the condition of hot air blowing. The dried steel wire granules 3 are blown to the steel wire granule outlet 12 by a high-power fan 11, thus circulating.

[0039] Specifically, the steel wire granule spiral magnetic field component 2 is a magnetic field component that generates a horizontal magnetic field force. Two adjacent steel wire granule spiral magnetic field components 2 are positioned opposite each other in the horizontal direction and at different heights in the vertical direction, and generate opposite magnetic fields in the horizontal direction respectively.

[0040] The spiral magnetic field assembly 2 of steel wire granules arranged on the flue wall 13 is arranged in multiple stages. The number of stages and the magnetic field strength can be flexibly adjusted according to the flue height and the mass of the selected steel ball granules 3. Generally, the number of stages is 3 to 5. For the steel wire granule collecting magnetic field assembly 6 arranged at the tail, a strong magnetic field should be selected to ensure that all granules can be completely collected.

[0041] Preferably, the multi-stage arranged steel wire granule spiral magnetic field assembly 2 is formed by an electromagnet. Except for the magnetic field at the bottom of the flue, all of them maintain the same intensity and change periodically. The magnetic field at the bottom of the flue is flexibly adjusted by the last steel wire granule collecting magnetic field assembly 6 and the bottom height.

[0042] As a preferred implementation method, such as Figure 2 As shown, the magnetic field is also uniformly arranged around the flue wall. In order to make the movement state of the granules more ideal, a semi-arrangement method is adopted around the flue wall. The flue wall 13 is evenly divided into multiple sub-regions along the circumferential direction. Each steel wire granule spiral magnetic field component 2 is located in half of the corresponding sub-region, that is, the steel wire granule spiral magnetic field component is arranged only in half of the flue wall width.

[0043] As a preferred embodiment, in order to ensure that the steel wire granules 3 can enter the flue evenly to adsorb dust from the flue gas, the steel wire granule outlet 12 is arranged around the flue outlet, with multiple openings arranged at the four corners, so that the steel wire granules 3 can enter the flue evenly.

[0044] The double-layer mesh grille 4 comprises two staggered mesh grilles, and is positioned below the flue gas outlet 5.

[0045] like Figure 3 As shown, the steel wire granule 3 has a spherical structure, including a core 301 and a steel wire 302 wrapped around the core 301. The core 301 is made of heat-resistant material to maintain a certain gravity, such as quartz. The outer steel wire is a uniformly wrapped steel wire with uniform gaps.

[0046] The flue gas outlet 5 is located at the bottom of the flue wall 13, and the flue gas guide plate 7 is a structure that guides the gas to flow in a swirling manner.

[0047] In a preferred embodiment, to achieve efficient separation of dust and steel wire particles in the cleaning tank 8, the system further includes a stirring device 9, the output of which is located inside the cleaning tank 8. Under the action of the stirring device, the steel wire particles in the cleaning tank 8 are separated from the dust due to centrifugal force. The dust settles at the bottom of the cleaning tank, while the steel wire particles are slowly drained by a mesh conveyor belt and fed into the heating and drying assembly 10 for drying.

[0048] In this embodiment, an inlet is arranged at the top of the cleaning tank 8, an outlet is arranged at the bottom on the opposite side, and a stirring device 9 is arranged directly above the cleaning tank to allow the steel wire granules 3 to be fully removed from the cleaning tank 8 and adhering dust.

[0049] Optionally, the heating and drying assembly 10 includes a hot air outlet and a vibrating grid screen, with the hot air outlet facing the output end of the vibrating grid screen and the fan 11; the heating and drying assembly 10 shakes water droplets off through the vibrating grid screen, and the incoming hot air fully dries the steel wire granules 12.

[0050] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. An alternating electromagnetic force dust capture system, comprising a flue gas inlet (1), a flue wall (13), a flue gas outlet (5), a cleaning tank (8), and a heating and drying assembly (10), characterized in that, The system also includes steel wire granules (3), steel wire granule outlet (12), double-layer mesh grid (4), steel wire granule spiral magnetic field assembly (2), steel wire granule collecting magnetic field assembly (6), and flue gas guide plate (7). The double-layer mesh grid (4) is set on the top of the flue wall (13), and the flue gas outlet (5) and the steel wire granule outlet (12) are both located above the double-layer mesh grid (4); there are multiple steel wire granule spiral magnetic field components (2), and each steel wire granule spiral magnetic field component (2) is distributed from top to bottom around the flue wall (13), which together generate a magnetic field force to guide the steel wire granules (3) to move from top to bottom in a spiral shape; the steel wire granule collecting magnetic field component (6) is located at the bottom of the flue wall (13) and is connected to the cleaning tank (8) through a pipe, which is used to generate a magnetic field force in the direction of the pipe; the flue gas guide plate (7) surrounds the outside of the flue gas inlet (1); The steel wire granule spiral magnetic field assembly (2) is a magnetic field assembly that generates a horizontal magnetic field force. Two adjacent steel wire granule spiral magnetic field assemblies (2) are positioned opposite each other in the horizontal direction and at different heights in the vertical direction, and generate opposite magnetic fields in the horizontal direction respectively. The flue wall (13) is evenly divided into multiple sub-regions along the circumferential direction, and each steel wire granule spiral magnetic field component (2) is located in half of the corresponding sub-region. The flue gas output from the flue gas inlet (1) flows from bottom to top in a swirling manner. The steel wire granules (3) released from the steel wire granule outlet (12) fall into the double-layer mesh grid (4). After passing through the double-layer mesh grid (4), they fall from top to bottom. During the fall, they are affected by the magnetic field force generated by each steel wire granule spiral magnetic field component (2) and deflect horizontally. The whole thing moves in a spiral line from top to bottom. Finally, it is attracted by the magnetic field force of the steel wire granule collecting magnetic field component (6) and enters the cleaning tank (8). The system also includes a fan (11), which is connected to the steel wire granule outlet (12) and the heating and drying assembly (10) via pipes, with the output end of the fan (11) facing the steel wire granule outlet (12).

2. The alternating electromagnetic force dust capture system according to claim 1, characterized in that, The heating and drying assembly (10) includes a hot air outlet and a vibrating grid screen, the hot air outlet being directed toward the output end of the vibrating grid screen and the fan (11).

3. The alternating electromagnetic force dust capture system according to claim 1, characterized in that, The double-layer mesh grid (4) comprises two layers of mesh grid arranged in a staggered manner.

4. The alternating electromagnetic force dust capture system according to claim 1, characterized in that, The steel wire granules (3) have a spherical structure, including a core (301) and a steel wire (302) wrapped around the outside of the core (301). The core (301) is a heat-resistant material.

5. The alternating electromagnetic force dust capture system according to claim 1, characterized in that, The flue gas outlet (5) is located at the bottom of the flue wall (13), and the flue gas guide plate (7) is a structure that guides the gas to flow in a swirling manner.

6. The alternating electromagnetic force dust capture system according to claim 1, characterized in that, The system also includes a stirring device (9), the output of which is located inside the cleaning tank (8).

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