Exhaust flue gas absorption device

Abstract

The utility model relates to the technical field of non-ferrous metal metallurgy, and discloses a discharged flue gas absorption device which comprises a desulfurization box, a spraying disc is fixedly connected in the desulfurization box, the upper end of the spraying disc is connected with a water inlet pipe, a liquid inlet pipe and a liquid discharge pipe are installed on the desulfurization box, a first flue gas inlet pipe is arranged on one side of the desulfurization box, and a second flue gas inlet pipe is arranged on the other side of the desulfurization box. One end of the first smoke inlet pipe is fixedly connected with a fan, one side of the first smoke inlet pipe is provided with a second smoke inlet pipe, the section of the second smoke inlet pipe is reduced by arranging an accelerating wheel, and the flow velocity of gas to be desulfurized can be accelerated according to a fluid Bernoulli equation; on the other hand, the to-be-desulfurized gas in the second smoke inlet pipe impacts an acceleration blade of the acceleration wheel, so that the acceleration blade drives the whole acceleration wheel to rotate, and the acceleration wheel rotates and then drives the acceleration blade to generate additional airflow, so that the to-be-desulfurized gas in the second smoke inlet pipe is accelerated to flow; therefore, the problem that the to-be-desulfurized gas in the second smoke inlet pipe is blocked and detained can be effectively solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of nonferrous metal smelting, and specifically relates to an external exhaust fume absorption device. Background Art

[0002] For the exhaust gas of non-ferrous smelting and refining enterprises, the design considers only the two categories of flue gas and acid-making tail gas to be discharged after desulfurization treatment. The acid-making tail gas refers to the SO2 flue gas normally discharged from the smelting furnace, which enters the acid plant to produce sulfuric acid and is then treated by the desulfurization system before meeting the emission standards; the collected flue gas refers to the flue gas collected by the bottom blowing furnace, continuous blowing furnace and refining furnace in the production process of the smelter. The SO2 concentration in this flue gas is low, the collection amount is large, and it has no value for acid production. Therefore, after collection, it is sent to the desulfurization process and the collected flue gas system is treated before meeting the emission standards.

[0003] A document with a publication number of (CN219682157U) is retrieved and discloses a flue gas desulfurization device, including a desulfurization tower, a filter assembly arranged in the inner cavity of the desulfurization tower, and a dredging assembly arranged in the filter assembly; the filter assembly is a flue gas filter cartridge, which is used to filter large particles from the flue gas entering the desulfurization tower; the dredging assembly is arranged in the flue gas filter cartridge, and is used to dredge the filter holes opened on the side wall of the flue gas filter cartridge.

[0004] The above-mentioned device allows external flue gas to enter the flue gas filter cartridge in the desulfurization tower from the smoke inlet pipe for preliminary filtration, and then enters the desulfurization tower. External ammonia water is sprayed on the guide cone through the ammonia water inlet pipe to form a water curtain, ensuring that the flue gas discharged from the filter holes of the flue gas filter cartridge can contact with ammonia water for desulfurization. If the power supply system suddenly fails or other emergencies cause smelting transfer out or in, the acid plant's SO2 main fan, air fan, and relay fan will stop, and part of the SO2 flue gas cannot produce sulfuric acid and enter the desulfurization system. The flue gas remains in the pipeline and accumulates, causing the device to be unable to continue operating.

[0005] In view of this, the present utility model is proposed. Utility Model Content

[0006] In order to solve the above technical problems, the basic concept of the technical solution adopted by the utility model is:

[0007] The smoke exhaust pipe is an air filter, and a vent is provided on the sidewall of the smoke exhaust pipe, and a fan is provided on the sidewall of the smoke exhaust pipe.

[0008] As a preferred embodiment of the present invention, the acceleration wheel is provided with a plurality of acceleration blades, and the acceleration blades are configured as laterally extending sheet-like blade structures or arc-shaped blade structures with curvature.

[0009] As a preferred embodiment of the utility model, multiple groups of acceleration wheels are rotatably installed in the second smoke inlet pipe, and the acceleration wheel group is formed by the multiple groups of acceleration wheels. The acceleration wheels are all installed in the middle position of the second smoke inlet pipe.

[0010] As a preferred embodiment of the utility model, the flow control assembly includes a side baffle and a main baffle, both of which are rotatably installed in the first smoke inlet pipe, and the side baffle is fixedly connected to the main baffle.

[0011] As a preferred embodiment of the utility model, the flow control component also includes a torsion spring, a rotating shaft is provided at the connection between the side baffle and the main baffle, the rotating shaft is rotatably connected to the first smoke inlet pipe, and torsion springs are sleeved on both ends of the rotating shaft, and the torsion spring is fixedly connected to the first smoke inlet pipe.

[0012] As a preferred embodiment of the utility model, the size of the side baffle is the same as the inner wall size of the second smoke inlet pipe, the main baffle is the same as the inner wall size of the first smoke inlet pipe, and sealing strips are provided on both the side baffle and the main baffle.

[0013] As a preferred embodiment of the utility model, a plurality of holes are provided on the bubbling disk, and a one-way valve is installed in each hole, so that the liquid will not flow back into the bubbling disk through the one-way valve.

[0014] As a preferred embodiment of the utility model, a guide block is installed at an inner corner of the second smoke inlet pipe, and an arc surface is opened in the guide block to guide the gas through the arc surface.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. In the exhaust gas absorption device, when a fault occurs, the fan stops working, and the torsion spring drives the side baffle and the main baffle to rotate through its own characteristics. The side baffle is opened at this time, and the main baffle is closed, and the gas to be desulfurized enters the second smoke inlet pipe. When the gas to be desulfurized in the second smoke inlet pipe reaches the acceleration wheel, on the one hand, due to the provision of the acceleration wheel, the cross-section of the second smoke inlet pipe is reduced at this point. According to the Bernoulli equation of the fluid, the flow rate of the gas to be desulfurized will be accelerated; on the other hand, the gas to be desulfurized in the second smoke inlet pipe impacts the acceleration blades of the acceleration wheel, so that the acceleration blades drive the entire acceleration wheel to rotate, and after the acceleration wheel rotates, it drives the acceleration blades to generate additional airflow, so that the gas to be desulfurized in the second smoke inlet pipe is accelerated to flow, thereby effectively solving the problem of blockage and retention of the gas to be desulfurized in the second smoke inlet pipe.

[0017] 2. In this external exhaust flue gas absorption device, the gas to be desulfurized in the second smoke inlet pipe enters the bubbling disk through the second connecting pipe, and the gas to be desulfurized is sent into the desulfurization box in the form of bubbles through the one-way valve in the bubbling disk, and fully reacts with the desulfurization liquid inside the desulfurization box, so that the gas to be desulfurized can be processed in an emergency state, and the desulfurized gas is discharged through the smoke exhaust pipe.

[0018] The specific implementation of the utility model is further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In the attached picture:

[0020] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0021] Figure 2 This is a cross-sectional view of the utility model;

[0022] Figure 3 This is a schematic diagram of the internal structure of the smoke inlet pipe of the utility model;

[0023] Figure 4 This is a schematic diagram of the internal structure of the second smoke inlet pipe of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure between the baffle and the smoke inlet pipe of the utility model.

[0025] In the figure: 1. desulfurization box; 2. first smoke inlet pipe; 201. first connecting pipe; 202. fan; 3. second smoke inlet pipe; 301. second connecting pipe; 302. partition plate; 303. acceleration wheel; 304. drainage block; 4. smoke exhaust pipe; 5. spray plate; 501. bubbling plate; 6. side baffle; 601. main baffle; 602. torsion spring. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model.

[0027] See also Figure 1-5 A device for absorbing exhaust flue gas comprises a desulfurization box 1, a spray plate 5 is fixedly connected to the interior of the desulfurization box 1, a water inlet pipe is connected to the upper end of the spray plate 5, a liquid inlet pipe and a liquid discharge pipe are installed on the desulfurization box 1, a first smoke inlet pipe 2 is provided on one side of the desulfurization box 1, a fan 202 is fixedly connected to one end of the first smoke inlet pipe 2, a second smoke inlet pipe 3 is provided on one side of the first smoke inlet pipe 2, a partition plate 302 is fixedly connected to the interior of the first smoke inlet pipe 2, and the first smoke inlet pipe 2 and the second smoke inlet pipe 3 are connected together by the partition plate 302. The ends are blocked to form two non-communicating channels, the channel in the first smoke inlet pipe 2 is fixedly connected with the first connecting pipe 201, the first connecting pipe 201 is fixedly connected to the desulfurization box 1, the channel in the second smoke inlet pipe 3 is fixedly connected with the second connecting pipe 301, the second connecting pipe 301 is fixedly connected to the desulfurization box 1, the other end of the second connecting pipe 301 is fixedly connected with a bubbling disk 501, the connection between the second smoke inlet pipe 3 and the first smoke inlet pipe 2 is provided with a flow control component, and the interior of the second smoke inlet pipe 3 is rotatably connected with an acceleration wheel 303, a smoke exhaust pipe 4 is fixed on the desulfurization box 1, and an acceleration wheel 303 is rotatably connected in the smoke exhaust pipe 4. The gas to be desulfurized is sent into the first smoke inlet pipe 2 through the fan 202. At this time, the gas to be desulfurized enters the desulfurization box 1 through the first connecting pipe 201 at one end of the first smoke inlet pipe 2. At this time, the spray plate 5 sprays desulfurization liquid to desulfurize the gas to be desulfurized, and the gas to be desulfurized enters the second smoke inlet pipe 3. When the gas to be desulfurized in the second smoke inlet pipe 3 reaches the acceleration wheel 303, on the one hand, due to the setting of the acceleration wheel 303, the cross section is reduced here. According to the Bernoulli equation of the fluid, the flow rate of the gas to be desulfurized will be accelerated, so that the gas to be desulfurized in the second smoke inlet pipe 3 will flow faster, thereby effectively solving the problem of blockage and retention of the gas to be desulfurized in the second smoke inlet pipe 3. The gas to be desulfurized in the second smoke inlet pipe 3 enters the bubbling disk 501 through the second connecting pipe 301, and fully reacts with the desulfurization liquid inside the desulfurization box 1, so that the gas to be desulfurized can be processed in an emergency state, and the desulfurized gas is discharged through the smoke exhaust pipe 4.

[0028] Among them, a plurality of accelerating blades are provided on the accelerating wheel 303, and the accelerating blades are arranged as a laterally extending sheet blade structure or an arc-shaped blade structure with an arc. On the other hand, the gas to be desulfurized in the second smoke inlet pipe 3 impacts the accelerating blades of the accelerating wheel 303, so that the accelerating blades drive the entire accelerating wheel 303 to rotate, and after the accelerating wheel 303 rotates, it drives the accelerating blades to generate additional airflow.

[0029] Among them, multiple groups of acceleration wheels 303 can be rotatably installed in the second smoke inlet pipe 3, and an acceleration wheel group is formed by multiple groups of acceleration wheels 303. The acceleration wheels 303 are all installed at the middle position of the second smoke inlet pipe 3. By setting the acceleration wheels 303, the cross-section of the second smoke inlet pipe 3 is reduced at this point. According to the fluid Bernoulli equation, the flow rate of the gas to be desulfurized will be accelerated.

[0030] Among them, the flow control component includes a side baffle 6 and a main baffle 601, and the side baffle 6 and the main baffle 601 are both rotatably installed in the first smoke inlet pipe 2. The side baffle 6 and the main baffle 601 are fixedly connected, and the main baffle 601 is pushed by the gas flow. When the main baffle 601 rotates, it drives the side baffle 6 to rotate. When the main baffle 601 rotates to open, the side baffle 6 is driven to close.

[0031] Among them, the flow control component also includes a torsion spring 602, and a rotating shaft is provided at the connection between the side baffle 6 and the main baffle 601. The rotating shaft is rotatably connected to the first smoke inlet pipe 2. Both ends of the rotating shaft are sleeved with torsion springs 602, and the torsion spring 602 is fixedly connected to the first smoke inlet pipe 2. When a fault occurs, the fan 202 stops working, and the torsion spring 602 drives the side baffle 6 and the main baffle 601 to rotate through its own characteristics. At this time, the side baffle 6 is opened and the main baffle 601 is closed.

[0032] Among them, the size of the side baffle plate 6 is the same as the inner wall size of the second smoke inlet pipe 3, the main baffle plate 601 is the same as the inner wall size of the first smoke inlet pipe 2, and the side baffle plate 6 and the main baffle plate 601 are both provided with sealing strips to ensure the sealing of the side baffle plate 6 and the main baffle plate 601.

[0033] Among them, a plurality of holes are opened on the bubbling disk 501, and a one-way valve is installed in each hole. The one-way valve prevents the liquid from flowing back into the bubbling disk 501, and the gas to be desulfurized is sent into the desulfurization box 1 in the form of bubbles through the one-way valve in the bubbling disk 501.

[0034] Among them, a guide block 304 is installed at the inner corner of the second smoke inlet pipe 3, and an arc surface is opened in the guide block 304, through which the gas is guided and the loss of gas kinetic energy is reduced.

[0035] Working principle: the gas to be desulfurized is sent into the first smoke inlet pipe 2 through the fan 202, and the main baffle 601 is pushed by the gas flow. When the main baffle 601 rotates, it drives the side baffle 6 to rotate. When the main baffle 601 rotates and opens, the side baffle 6 is driven to close. At this time, the gas to be desulfurized enters the desulfurization box 1 through the first connecting pipe 201 at one end of the first smoke inlet pipe 2. At this time, the spray plate 5 sprays desulfurization liquid to desulfurize the gas to be desulfurized. When a fault occurs, the fan 202 stops working, and the torsion spring 602 drives the side baffle 6 and the main baffle 601 to rotate through its own characteristics. The side baffle 6 is opened at this time, and the main baffle 601 is closed, and the gas to be desulfurized enters the second smoke inlet pipe 3. When the gas to be desulfurized in the second smoke inlet pipe 3 reaches the acceleration wheel 303, on the one hand, due to the provision of the acceleration wheel 303, the second smoke inlet pipe 3 is cut here On the other hand, the gas to be desulfurized in the second smoke inlet pipe 3 impacts the accelerating blades of the accelerating wheel 303, so that the accelerating blades drive the entire accelerating wheel 303 to rotate, and the rotating accelerating wheel 303 drives the accelerating blades to generate additional airflow, so that the gas to be desulfurized in the second smoke inlet pipe 3 is accelerated to flow, thereby effectively solving the problem of blockage and retention of the gas to be desulfurized in the second smoke inlet pipe 3. The gas to be desulfurized in the second smoke inlet pipe 3 enters the bubbling disk 501 through the second connecting pipe 301, and is sent into the desulfurization box 1 through the one-way valve in the bubbling disk 501 in the form of bubbles, and fully reacts with the desulfurization liquid inside the desulfurization box 1, so as to process the desulfurized gas in an emergency state, and the desulfurized gas is discharged through the smoke exhaust pipe 4.

[0036] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An exhaust flue gas absorption device, comprising a desulfurization box (1), a spray plate (5) fixedly connected to the interior of the desulfurization box (1), an upper end of the spray plate (5) connected to a water inlet pipe, a liquid inlet pipe and a liquid discharge pipe installed on the desulfurization box (1), characterized in that: A first smoke inlet pipe (2) is provided on one side of the desulfurization box (1), one end of the first smoke inlet pipe (2) is fixedly connected to a fan (202), a second smoke inlet pipe (3) is provided on one side of the first smoke inlet pipe (2), a partition plate (302) is fixedly connected inside the first smoke inlet pipe (2), the first smoke inlet pipe (2) and one end of the second smoke inlet pipe (3) are separated by the partition plate (302) to form two non-communicating passages, the passage inside the first smoke inlet pipe (2) is fixedly connected to a first connecting pipe (201), the first connecting pipe (201) and the desulfurization box (1) are connected to the first smoke inlet pipe (2). The sulfur box (1) is fixedly connected, the channel in the second smoke inlet pipe (3) is fixedly connected to the second connecting pipe (301), the second connecting pipe (301) is fixedly connected to the desulfurization box (1), the other end of the second connecting pipe (301) is fixedly connected to a bubbling disk (501), a flow control component is provided at the connection between the second smoke inlet pipe (3) and the first smoke inlet pipe (2), an acceleration wheel (303) is rotatably connected inside the second smoke inlet pipe (3), a smoke exhaust pipe (4) is fixedly connected to the desulfurization box (1), and an acceleration wheel (303) is rotatably connected inside the smoke exhaust pipe (4).

2. The exhaust smoke absorption device according to claim 1, characterized in that: The acceleration wheel (303) is provided with a plurality of acceleration blades, and the acceleration blades are configured as laterally extending sheet-like blade structures or arc-shaped blade structures with curvature.

3. The exhaust smoke absorption device according to claim 1, characterized in that: A plurality of groups of acceleration wheels (303) are rotatably mounted in the second smoke inlet pipe (3), and an acceleration wheel group is formed by the plurality of groups of acceleration wheels (303). The acceleration wheels (303) are all mounted at the middle position of the second smoke inlet pipe (3).

4. The exhaust smoke absorption device according to claim 1, characterized in that: The flow control assembly comprises a side baffle (6) and a main baffle (601), wherein the side baffle (6) and the main baffle (601) are both rotatably mounted in the first smoke inlet pipe (2), and the side baffle (6) and the main baffle (601) are fixedly connected.

5. The exhaust smoke absorption device according to claim 1, characterized in that: The flow control component further comprises a torsion spring (602); a rotating shaft is provided at the connection between the side baffle plate (6) and the main baffle plate (601); the rotating shaft is rotatably connected to the first smoke inlet pipe (2); both ends of the rotating shaft are sleeved with torsion springs (602); the torsion springs (602) are fixedly connected to the first smoke inlet pipe (2).

6. The exhaust smoke absorption device according to claim 4, characterized in that: The size of the side baffle (6) is the same as the size of the inner wall of the second smoke inlet pipe (3), the size of the main baffle (601) is the same as the inner wall of the first smoke inlet pipe (2), and sealing strips are both provided on the side baffle (6) and the main baffle (601).

7. The exhaust smoke absorption device according to claim 1, characterized in that: The bubbling disk (501) is provided with a plurality of holes, each of which is provided with a one-way valve, so that the liquid will not flow back into the bubbling disk (501) through the one-way valve.

8. The exhaust smoke absorption device according to claim 1, characterized in that: A guide block (304) is installed at an inner corner of the second smoke inlet pipe (3), and an arc surface is provided inside the guide block (304), through which the gas is guided.

Images