Electrolytic aluminum flue gas desulfurization device

Abstract

The utility model discloses an electrolytic aluminum flue gas desulfurization device, and belongs to the technical field of electrolytic aluminum flue gas treatment. Comprising a desulfurization box and a secondary filter cartridge, observation glass is installed in the desulfurization box, the right side face of the desulfurization box is fixedly communicated with a liquid injection pipe, the top end of the liquid injection pipe is fixedly communicated with a one-way liquid injection valve, the liquid inlet end of the one-way liquid injection valve is fixedly communicated with a pouring hopper, and a liquid drainage valve is installed on the front face of the desulfurization box. A stirring and mixing mechanism is arranged in the desulfurization box, the stirring and mixing mechanism comprises a motor and two stirring pieces, a smoke inlet pipe is fixedly connected to the left side wall of the desulfurization box, and through cooperation of the desulfurization box, observation glass, a liquid injection pipe, a pouring hopper, a one-way liquid injection valve, a liquid drainage valve and the stirring and mixing mechanism, the smoke can be discharged through the stirring and mixing mechanism; a sodium hydroxide solution can be added into the desulfurization box when the concentration of the solution in the desulfurization box is insufficient, so that the concentration of the solution can be improved, and the influence on flue gas desulfurization efficiency caused by reduction of the concentration of the solution can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic aluminum fume treatment, in particular to an electrolytic aluminum fume desulfurization device. Background Art

[0002] Electrolytic aluminum is aluminum obtained through electrolysis. Its working principle is to use alumina as the electrolyte and carbon body as the anode for electrolysis. Liquid metallic aluminum is precipitated on the cathode. After a strong direct current is passed through, an electrochemical reaction is carried out at the two poles in the electrolytic cell at 950℃-970℃ to obtain aluminum. At the same time, anode gas mainly composed of CO2 is generated on the anode. Since the carbon block contains S element, the electrolytic flue gas contains not only hydrogen fluoride, fluoride, and dust, but also SO2. SO2 is a pollutant gas and needs to be filtered.

[0003] An electrolytic aluminum flue gas desulfurization device with publication number CN212701308U includes a main box body and a sub-box body, an air inlet pipe is provided through the top left side of the main box body, the air inlet pipe extends to the bottom end of the main box body inner cavity, one side of the air inlet pipe is connected to a U-shaped tube, the U-shaped tube is located at the bottom end of the main box body inner cavity, the main box body inner cavity is provided with a sodium hydroxide solution, the sodium hydroxide solution is higher than the U-shaped tube, the top of the main box body is fixedly connected to the sub-box body, a variable diameter air inlet pipe is provided through the middle position of the top of the main box body, the other side of the variable diameter air inlet pipe is connected to a spiral tube, the spiral tube is located in the sub-box body inner cavity, a desulfurization mechanism is fixedly connected to the top of the spiral tube between the inner cavity walls of the sub-box body, and an air outlet pipe is provided through the middle position of the top of the sub-box body.

[0004] The above-mentioned device has the advantage of high desulfurization effect. However, when the above-mentioned scheme is actually used to desulfurize the flue gas, as the time for sodium hydroxide solution to desulfurize the flue gas gradually becomes longer, the effective content inside the sodium hydroxide solution will gradually decrease. The above-mentioned scheme cannot add new sodium hydroxide to the solution to increase the concentration. Over time, the efficiency of flue gas desulfurization is affected. Utility Model Content

[0005] The utility model aims to solve the problem that the prior art cannot add new sodium hydroxide to the solution to increase the concentration, which affects the efficiency of flue gas desulfurization over time, and proposes an electrolytic aluminum flue gas desulfurization device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A flue gas desulfurization device for electrolytic aluminum includes a desulfurization box and a secondary filter cartridge, an observation glass is installed inside the desulfurization box, the right side of the desulfurization box is fixedly connected to a liquid injection pipe, the top of the liquid injection pipe is fixedly connected to a one-way liquid injection valve, the liquid inlet end of the one-way liquid injection valve is fixedly connected to a pouring bucket, a drain valve is installed on the front of the desulfurization box, a stirring and mixing mechanism is provided inside the desulfurization box, the stirring and mixing mechanism includes a motor and two stirring parts, the left side wall of the desulfurization box is fixedly connected to a smoke inlet pipe, a rubber air isolation pad is provided inside the secondary filter cartridge, the rubber air isolation pad is slidably connected to the secondary filter cartridge, the upper surface of the rubber air isolation pad is fixedly connected to an air distribution plate, an activated carbon filter plate is placed on the upper surface of the air distribution plate, and two limiting mechanisms are provided on the outside of the desulfurization box.

[0008] Preferably, the inner walls of the two stirring members are fixedly connected with a rotating rod, the two rotating rods pass through the inner wall of the desulfurization box and extend to the right side of the desulfurization box, the outer surfaces of the two rotating rods are rotatably connected to the inner wall of the desulfurization box, the outer surfaces of the two rotating rods are fixedly connected with a synchronous wheel 1, and the two synchronous wheels 1 are connected through a synchronous wheel 2.

[0009] Preferably, the outer surface of the motor is fixedly connected to a base, the output end of the motor is fixedly connected to a connector, and the connector is fixedly connected to one of the rotating rods.

[0010] Preferably, the upper surface of the secondary filter cartridge is provided with four built-in holes, each of which is slidably connected to a support column. A top plate is provided above the secondary filter cartridge, and the bottom surface of the top plate is fixedly connected to the top ends of the four support columns.

[0011] Preferably, the limiting mechanism includes a first limiting block and a second limiting block, the outer surface of the first limiting block is fixedly connected to the desulfurization box, and the outer surface of the second limiting block is fixedly connected to the secondary filter cartridge.

[0012] Preferably, the inner wall of the second limit block is slidably connected to a limit rod, the limit rod passes through the second limit block and extends to the inside of the first limit block, and the limit rod is slidably connected to the inside of the first limit block.

[0013] Preferably, a spring is sleeved on the outer surface of the limiting pull rod, and two ends of the spring are fixedly connected to the second limiting block and the limiting pull rod respectively.

[0014] Compared with the existing technology, the utility model provides an electrolytic aluminum flue gas desulfurization device with the following beneficial effects:

[0015] 1. The utility model uses the coordination between the desulfurization box, the observation glass, the injection pipe, the pouring bucket, the one-way injection valve, the drain valve and the stirring and mixing mechanism to add sodium hydroxide solution into the desulfurization box when the solution concentration inside the box is insufficient, thereby increasing the solution concentration and avoiding the solution concentration from decreasing and affecting the efficiency of flue gas desulfurization.

[0016] 2. The present invention can prevent rainwater from falling directly into the interior of the secondary filter cartridge by using a top plate. After using a limiting mechanism to separate the desulfurization box and the secondary filter cartridge, the support column and the top plate are taken out from the inside of the built-in hole, and the air distribution plate, rubber air isolation cushion and activated carbon filter plate can be poured out for cleaning and replacement, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a cross-sectional view of the internal structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the stirring and mixing mechanism of the utility model;

[0020] Figure 4 This is a schematic diagram of the explosion structure of the limiting mechanism of the utility model;

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the secondary filter cartridge, built-in holes, support columns and top plate of the utility model;

[0022] Figure 6 It is a schematic diagram of the three-dimensional structure of the air distribution plate and the rubber air isolation cushion of the utility model.

[0023] In the picture:

[0024] 1. Desulfurization box; 2. Observation glass; 3. Liquid injection pipe; 4. Pouring bucket; 5. One-way liquid injection valve; 6. Liquid discharge valve; 7. Stirring and mixing mechanism; 701. Motor; 702. Connector; 703. Rotating rod; 704. Synchronous wheel one; 705. Synchronous wheel two; 706. Stirring element; 707. Base; 8. Smoke inlet pipe; 9. Secondary filter cartridge; 10. Built-in hole; 11. Support column; 12. Top plate; 13. Gas distributor; 14. Rubber air cushion; 15. Activated carbon filter plate; 16. Limiting mechanism; 1601. First limiting block; 1602. Second limiting block; 1603. Limiting pull rod; 1604. Spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] Reference Figure 1-6 A flue gas desulfurization device for electrolytic aluminum includes a desulfurization box 1 and a secondary filter cartridge 9. An observation glass 2 is installed inside the desulfurization box 1. By using the observation glass 2, the color and transparency of the sodium hydroxide solution inside the desulfurization box 1 can be observed, and the state of the sodium hydroxide solution can be indirectly judged. The right side of the desulfurization box 1 is fixedly connected with an injection pipe 3, and the top of the injection pipe 3 is fixedly connected with a one-way injection valve 5. The liquid inlet end of the one-way injection valve 5 is fixedly connected with a pouring bucket 4. By using the one-way injection valve 5, sodium hydroxide solution can be fed into the interior of the injection pipe 3 in one direction to prevent flue gas from floating out of the injection pipe 3.

[0027] A drain valve 6 is installed on the front of the desulfurization box 1. By using the drain valve 6, part of the sodium hydroxide solution can be taken out, its content can be detected, and it can be determined whether additional sodium hydroxide needs to be added to the interior of the desulfurization box 1.

[0028] A stirring and mixing mechanism 7 is provided inside the desulfurization box 1. The stirring and mixing mechanism 7 includes a motor 701 and two stirring members 706. The inner walls of the two stirring members 706 are fixedly connected with a rotating rod 703. The two rotating rods 703 pass through the inner wall of the desulfurization box 1 and extend to the right side of the desulfurization box 1. The outer surfaces of the two rotating rods 703 are rotatably connected to the inner wall of the desulfurization box 1. The outer surfaces of the two rotating rods 703 are fixedly connected with a synchronous wheel 1 704. The two synchronous wheels 1 704 are connected by a synchronous wheel 2 705. Under the transmission action of the synchronous wheel 2 705, the two rotating rods 703 can rotate synchronously under the same driving source, thereby improving the efficiency of mixing the newly added sodium hydroxide with the solution.

[0029] The outer surface of the motor 701 is fixedly connected to a base 707, the output end of the motor 701 is fixedly connected to a connector 702, and the connector 702 is fixedly connected to one of the rotating rods 703. The base 707 can support the motor 701, making it convenient to use the motor 701 for driving work.

[0030] The left side wall of the desulfurization box 1 is fixedly connected with the smoke inlet pipe 8, and the interior of the secondary filter cartridge 9 is provided with a rubber air-isolating cushion 14, which is slidably connected to the secondary filter cartridge 9. The upper surface of the rubber air-isolating cushion 14 is fixedly connected with an air separation plate 13, and an activated carbon filter plate 15 is placed on the upper surface of the air separation plate 13. By using the air separation plate 13, the flue gas can be prevented from rushing to the activated carbon filter plate 15 all at once, which plays a partial blocking role. By using the rubber air-isolating cushion 14, a certain sealing effect can be achieved to prevent the flue gas from flowing out from the side.

[0031] Two limiting mechanisms 16 are provided on the outside of the desulfurization box 1. The limiting mechanism 16 includes a first limiting block 1601 and a second limiting block 1602. The outer surface of the first limiting block 1601 is fixedly connected to the desulfurization box 1, and the outer surface of the second limiting block 1602 is fixedly connected to the secondary filter cartridge 9. The first limiting block 1601 and the second limiting block 1602 are both provided with openings inside which allow the limiting pull rod 1603 to slide.

[0032] The inner wall of the second limit block 1602 is slidably connected to the limit rod 1603, the limit rod 1603 passes through the second limit block 1602 and extends to the interior of the first limit block 1601, and the limit rod 1603 is slidably connected to the interior of the first limit block 1601. By using the limit rod 1603, the first limit block 1601 and the second limit block 1602 can be limited, thereby avoiding the displacement of the secondary filter cartridge 9.

[0033] The outer surface of the limiting pull rod 1603 is sleeved with a spring 1604, and the two ends of the spring 1604 are fixedly connected to the second limiting block 1602 and the limiting pull rod 1603 respectively. By using the elastic force of the spring 1604, the limiting pull rod 1603 can maintain the limitation of the first limiting block 1601 and the second limiting block 1602.

[0034] Four built-in holes 10 are provided on the upper surface of the secondary filter cartridge 9, and a support column 11 is slidably connected to the inside of each built-in hole 10. A top plate 12 is provided above the secondary filter cartridge 9, and the bottom surface of the top plate 12 is fixedly connected to the top ends of the four support columns 11. By using the top plate 12, rainwater and the like can be prevented from falling directly into the interior of the secondary filter cartridge 9. After using the limiting mechanism 16 to separate the desulfurization box 1 and the secondary filter cartridge 9, the support columns 11 and the top plate 12 are removed, and the gas distributor plate 13, the rubber air barrier cushion 14 and the activated carbon filter plate 15 can be poured out for cleaning and replacement.

[0035] Working principle: When the electrolytic flue gas needs to be desulfurized, the flue gas is sent into the desulfurization box 1 through the flue gas inlet pipe 8. The sodium hydroxide solution inside the desulfurization box 1 can desulfurize the flue gas. After being desulfurized from the sodium hydroxide, the flue gas passes through the activated carbon filter plate 15 for secondary filtration and can be discharged into the air. When it is necessary to inject sodium hydroxide into the desulfurization box 1 to increase the concentration, the sodium hydroxide solution is poured into the pouring bucket 4. By opening the one-way injection valve 5, the sodium hydroxide solution can be sent into the desulfurization box 1 through the injection pipe 3. Then, the motor 701 is started to drive the connector 702, one of the rotating rods 703 and the synchronous wheel 1 704 to rotate. Under the transmission action of the synchronous wheel 2 705, the other synchronous wheel 1 704 and the rotating rod 703 can be driven to rotate, which can drive the two stirring members 706 to rotate, so that the newly added sodium hydroxide solution can be mixed with the solution inside the desulfurization box 1, thereby increasing the concentration of the solution inside the desulfurization box 1, and thus avoiding the low solution concentration affecting the desulfurization efficiency of the flue gas.

[0036] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0037] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0038] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. An electrolytic aluminum flue gas desulfurization device, comprising a desulfurization box (1) and a secondary filter cartridge (9), characterized in that: An observation glass (2) is installed inside the desulfurization box (1), a liquid injection pipe (3) is fixedly connected to the right side of the desulfurization box (1), a one-way liquid injection valve (5) is fixedly connected to the top of the liquid injection pipe (3), and a liquid inlet end of the one-way liquid injection valve (5) is fixedly connected to a pouring bucket (4), a liquid discharge valve (6) is installed on the front of the desulfurization box (1), and a stirring and mixing mechanism (7) is provided inside the desulfurization box (1), and the stirring and mixing mechanism (7) includes a motor (701) and two A stirring member (706) is provided, the left side wall of the desulfurization box (1) is fixedly connected to a smoke inlet pipe (8), a rubber air barrier (14) is provided inside the secondary filter cartridge (9), the rubber air barrier (14) is slidably connected to the secondary filter cartridge (9), the upper surface of the rubber air barrier (14) is fixedly connected to an air separation plate (13), an activated carbon filter plate (15) is placed on the upper surface of the air separation plate (13), and two limiting mechanisms (16) are provided on the outside of the desulfurization box (1).

2. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The inner walls of the two stirring members (706) are fixedly connected to a rotating rod (703), the two rotating rods (703) pass through the inner wall of the desulfurization box (1) and extend to the right side of the desulfurization box (1), the outer surfaces of the two rotating rods (703) are rotatably connected to the inner wall of the desulfurization box (1), the outer surfaces of the two rotating rods (703) are fixedly connected to a synchronous wheel 1 (704), and the two synchronous wheels 1 (704) are connected through a synchronous wheel 2 (705).

3. The electrolytic aluminum flue gas desulfurization device according to claim 2, characterized in that: The outer surface of the motor (701) is fixedly connected to a base (707), the output end of the motor (701) is fixedly connected to a connector (702), and the connector (702) is fixedly connected to one of the rotating rods (703).

4. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: Four built-in holes (10) are provided on the upper surface of the secondary filter cartridge (9), and a support column (11) is slidably connected to the interior of each built-in hole (10). A top plate (12) is provided above the secondary filter cartridge (9), and the bottom surface of the top plate (12) is fixedly connected to the top ends of the four support columns (11).

5. The electrolytic aluminum flue gas desulfurization device according to claim 1, characterized in that: The limiting mechanism (16) comprises a first limiting block (1601) and a second limiting block (1602); the outer surface of the first limiting block (1601) is fixedly connected to the desulfurization box (1); and the outer surface of the second limiting block (1602) is fixedly connected to the secondary filter cartridge (9).

6. The electrolytic aluminum flue gas desulfurization device according to claim 5, characterized in that: The inner wall of the second limit block (1602) is slidably connected to a limit rod (1603), the limit rod (1603) passes through the second limit block (1602) and extends to the interior of the first limit block (1601), and the limit rod (1603) is slidably connected to the interior of the first limit block (1601).

7. The electrolytic aluminum flue gas desulfurization device according to claim 6, characterized in that: The outer surface of the limiting pull rod (1603) is sleeved with a spring (1604), and the two ends of the spring (1604) are fixedly connected to the second limiting block (1602) and the limiting pull rod (1603) respectively.

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