Fluorine tail gas absorption and purification device

Abstract

The utility model discloses a fluorine tail gas absorption and purification device, which belongs to the technical field of chemical tail gas purification and comprises an absorption tower, a stirring component is fixedly mounted in the middle of the lower surface of the absorption tower, and a filter component is fixedly connected to the top end of the inner wall of the absorption tower. Through the arranged stirring assembly, stirring blades drive absorption liquid in the absorption tower to rotate and flow, full contact between the absorption liquid and waste gas is promoted, and the gas-liquid mass transfer effect is enhanced, so that the absorption efficiency of fluorine gas in the waste gas is improved, primary reaction and absorption of the fluorine gas can be achieved, the concentration of the fluorine gas in the gas is effectively reduced, and the service life of the gas is prolonged. Compared with the prior art, more favorable conditions are created for the subsequent spraying absorption procedure, the overall purification effect is further improved, the fluorine removal rate is remarkably increased, the more efficient and stable tail gas treatment process is achieved, residual fluorine can be further adsorbed and purified through the arranged filtering assembly and activated carbon, and therefore the overall fluorine removal effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of chemical tail gas purification technology, specifically a device for absorbing and purifying fluorine tail gas. Background Technology

[0002] Fluorine exhaust gas is a type of harmful fluorine-containing gas emitted during industrial production processes. It mainly originates from industries such as fluorochemicals, semiconductor manufacturing, electronics, metallurgy, glass etching, and ceramic firing. Due to its extremely strong corrosiveness and toxicity, if it is released directly into the atmosphere without treatment, it will not only cause serious corrosion to equipment and pipelines, but also pose a great threat to the environment and human health, such as causing respiratory diseases, polluting soil and water sources, and damaging ecosystems. Therefore, efficient purification and absorption treatment of fluorine exhaust gas is particularly important.

[0003] Currently, absorption towers are widely used in the purification of fluorine exhaust gas. They mainly use methods such as spraying to bring the absorbent liquid into contact with the waste gas, thereby achieving the chemical reaction and removal of fluorine. However, in actual operation, when the waste gas flow rate is large or the airflow distribution is uneven, it is easy to cause insufficient contact between the absorbent liquid and the waste gas, affecting the mass transfer efficiency and thus reducing the removal effect of fluorine.

[0004] Therefore, this invention provides a device for absorbing and purifying fluorine exhaust gas to solve the above-mentioned problems. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] This invention provides a device for absorbing and purifying fluorine exhaust gas, aiming to solve the problems mentioned in the background art.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: an absorption tower, wherein an agitation component is fixedly installed in the middle of the lower surface of the absorption tower, and a filter component is fixedly connected to the top of the inner wall of the absorption tower;

[0009] The agitation assembly includes a motor, the upper surface of which is fixedly installed in the middle of the lower surface of the absorption tower. A rotating rod is fixedly connected to the output end of the motor, and an agitator blade is fixedly connected to the top end of the rotating rod.

[0010] As a preferred technical solution of this application, the filtration assembly includes a first storage box, the outer surface of which is fixedly connected to the top of the inner wall of the absorption tower, activated carbon is disposed inside the first storage box, a support rod is fixedly connected to the upper surface of the first storage box, a second storage box is fixedly connected to the top of the support rod, and a molecular sieve is disposed inside the second storage box.

[0011] As a preferred technical solution of this application, a perforated plate is fixedly connected to the middle of the inner wall of the absorption tower, a mounting frame is fixedly connected to the lower surface of the perforated plate, and a spray assembly is fixedly connected inside the mounting frame.

[0012] As a preferred technical solution of this application, the spray assembly includes a coil, the outer surface of which is fixedly connected to the inside of the mounting frame, a nozzle is fixedly connected to the bottom end of the outer surface of the coil, a water pump is fixedly connected to one end of the coil, and a water inlet pipe is fixedly connected to the input end of the water pump.

[0013] As a preferred technical solution of this application, an air inlet pipe is fixedly connected to one side of the outer surface of the absorption tower, and an induced draft fan is fixedly installed at the top of the air inlet pipe.

[0014] As a preferred technical solution of this application, an outlet pipe is fixedly connected to the upper surface of the absorption tower, and a support leg is fixedly connected to the edge of the lower surface of the absorption tower.

[0015] (III) Beneficial Effects

[0016] 1. Through the set agitation components, the agitator blades drive the absorbent liquid in the absorption tower to rotate and flow, promoting full contact between the absorbent liquid and the waste gas, enhancing the gas-liquid mass transfer effect, thereby improving the absorption efficiency of fluorine gas in the waste gas, and thus realizing the initial reaction and absorption of fluorine gas, effectively reducing the concentration of fluorine gas in the gas, creating more favorable conditions for the subsequent spray absorption process, further improving the overall purification effect, significantly improving the fluorine removal rate, and achieving a more efficient and stable tail gas treatment process.

[0017] 2. Through the set filter components, activated carbon can further adsorb and purify the residual fluorine gas, thereby improving the overall fluorine gas removal effect. Subsequently, molecular sieves perform efficient dehumidification treatment on the gas after the reaction, reducing the moisture content in the gas, preventing corrosion of subsequent equipment and secondary pollution, while ensuring the safety and stability of exhaust gas emissions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a device for absorbing and purifying fluorine tail gas.

[0019] Figure 2 This is a cross-sectional schematic diagram of the absorption tower in a device for absorbing and purifying fluorine tail gas.

[0020] Figure 3 This is a schematic diagram of the agitator blades in a device for absorbing and purifying fluorine tail gas.

[0021] Figure 4 This is a schematic diagram of the structure of the first storage box in a device for absorbing and purifying fluorine tail gas;

[0022] Figure 5 This is a schematic diagram of the coil structure in a device for absorbing and purifying fluorine tail gas.

[0023] In the picture:

[0024] 1. Absorption tower; 2. Motor; 3. Rotary rod; 4. Stirring blade; 5. First storage box; 6. Activated carbon; 7. Support rod; 8. Second storage box; 9. Molecular sieve; 10. Perforated plate; 11. Mounting frame; 12. Coil; 13. Nozzle; 14. Water pump; 15. Water inlet pipe; 16. Air inlet pipe; 17. Exhaust fan; 18. Air outlet pipe; 19. Support leg. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] This utility model provides a device for absorbing and purifying fluorine exhaust gas, such as... Figures 1-5 As shown, a device for absorbing and purifying fluorine tail gas includes an absorption tower 1, an agitator fixedly installed in the middle of the lower surface of the absorption tower 1, and a filter assembly fixedly connected to the top of the inner wall of the absorption tower 1.

[0027] The agitation assembly includes a motor 2, the upper surface of which is fixedly installed in the middle of the lower surface of the absorption tower 1. A rotating rod 3 is fixedly connected to the output end of the motor 2, and an agitator 4 is fixedly connected to the top of the rotating rod 3. When the motor 2 is started, the rotating rod 3 drives the agitator 4 to rotate, thereby driving the absorbent liquid in the absorption tower 1 to rotate and flow, so as to promote full contact between the absorbent liquid and the waste gas, enhance the gas-liquid mass transfer effect, and thus improve the absorption efficiency of fluorine gas in the waste gas. This enables the initial reaction and absorption of fluorine gas, effectively reducing the concentration of fluorine gas in the gas, creating more favorable conditions for the subsequent spray absorption process, further improving the overall purification effect, significantly increasing the fluorine removal rate, and achieving a more efficient and stable tail gas treatment process.

[0028] The filtration assembly includes a first storage box 5, the outer surface of which is fixedly connected to the top of the inner wall of the absorption tower 1. Activated carbon 6 is installed inside the first storage box 5. A support rod 7 is fixedly connected to the upper surface of the first storage box 5, and a second storage box 8 is fixedly connected to the top of the support rod 7. A molecular sieve 9 is installed inside the second storage box 8. The first storage box 5 and the second storage box 8 are staggered and overlapped to guide the flow direction of the exhaust gas, allowing the exhaust gas to flow sequentially through the surfaces of the activated carbon 6 and the molecular sieve 9. The activated carbon 6 can further adsorb and purify the residual fluorine gas, thereby improving the overall fluorine gas removal effect. Subsequently, the molecular sieve 9 performs efficient dehumidification treatment on the gas after the reaction, reducing the moisture content in the gas, preventing corrosion of subsequent equipment and secondary pollution, while ensuring the safety and stability of the exhaust gas emission.

[0029] An orifice plate 10 is fixedly connected to the middle of the inner wall of the absorption tower 1, and an installation frame 11 is fixedly connected to the lower surface of the orifice plate 10. A spray assembly is fixedly connected inside the installation frame 11.

[0030] The spray assembly includes a coil 12, the outer surface of which is fixedly connected to the inside of the mounting frame 11. A nozzle 13 is fixedly connected to the bottom end of the outer surface of the coil 12. A water pump 14 is fixedly connected to one end of the coil 12. A water inlet pipe 15 is fixedly connected to the input end of the water pump 14. When the water pump 14 is started, the absorbent liquid at the bottom of the absorption tower 1 can be pumped into the coil 12 through the water inlet pipe 15 and sprayed evenly through the nozzle 13 to form droplets with a large specific surface area. This allows for full contact with the rising exhaust gas, thereby increasing the gas-liquid contact area and promoting the mass transfer and reaction efficiency between the fluorine gas and the absorbent liquid. This significantly improves the absorption and purification effect of the fluorine gas, achieving more efficient and stable tail gas treatment.

[0031] An air inlet pipe 16 is fixedly connected to one side of the outer surface of the absorption tower 1. An induced draft fan 17 is fixedly installed at the top of the air inlet pipe 16. Starting the induced draft fan 17 can introduce the waste gas into the absorption tower 1 through the air inlet pipe 16 so that it can react with the absorption liquid for absorption.

[0032] An outlet pipe 18 is fixedly connected to the upper surface of the absorption tower 1, and a support leg 19 is fixedly connected to the edge of the lower surface of the absorption tower 1. The support leg 19 provides space for the installation of the motor 2, and the outlet pipe 18 facilitates the discharge of purified gas.

[0033] Working steps: First, start the induced draft fan 17 to introduce the waste gas into the absorption tower 1 through the inlet pipe 16. Next, start the motor 2 to drive the agitator 4 to rotate via the rotor 3, thereby driving the absorbent liquid in the absorption tower 1 to rotate and flow, so as to promote full contact between the absorbent liquid and the waste gas. Next, start the water pump 14 to pump the absorbent liquid at the bottom of the absorption tower 1 into the coil 12 through the water inlet pipe 15, and spray it evenly through the nozzle 13 to fully contact the rising waste gas and perform secondary absorption and purification of the fluorine gas. Finally, the waste gas flows through the surface of the activated carbon 6 and the molecular sieve 9 in sequence. The activated carbon 6 further adsorbs and purifies the residual fluorine gas. Subsequently, the molecular sieve 9 performs efficient dehumidification treatment on the gas after the reaction, and then discharges it through the outlet pipe 18.

[0034] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for absorbing and purifying fluorine tail gas, comprising an absorption tower (1), characterized in that: An agitation assembly is fixedly installed in the middle of the lower surface of the absorption tower (1), and a filter assembly is fixedly connected to the top of the inner wall of the absorption tower (1). The stirring assembly includes a motor (2), the upper surface of which is fixedly installed in the middle of the lower surface of the absorption tower (1), and a rotating rod (3) is fixedly connected to the output end of the motor (2), and an agitator (4) is fixedly connected to the top end of the rotating rod (3).

2. The apparatus for absorbing and purifying fluorine tail gas according to claim 1, characterized in that: The filtration assembly includes a first storage box (5), the outer surface of which is fixedly connected to the top of the inner wall of the absorption tower (1), activated carbon (6) is disposed inside the first storage box (5), a support rod (7) is fixedly connected to the upper surface of the first storage box (5), a second storage box (8) is fixedly connected to the top of the support rod (7), and a molecular sieve (9) is disposed inside the second storage box (8).

3. The apparatus for absorbing and purifying fluorine tail gas according to claim 1, characterized in that: An orifice plate (10) is fixedly connected to the middle of the inner wall of the absorption tower (1), and an installation frame (11) is fixedly connected to the lower surface of the orifice plate (10). A spray assembly is fixedly connected inside the installation frame (11).

4. The apparatus for absorbing and purifying fluorine tail gas according to claim 3, characterized in that: The spray assembly includes a coil (12), the outer surface of which is fixedly connected to the inside of the mounting bracket (11), a nozzle (13) is fixedly connected to the bottom end of the outer surface of the coil (12), a water pump (14) is fixedly connected to one end of the coil (12), and a water inlet pipe (15) is fixedly connected to the input end of the water pump (14).

5. The apparatus for absorbing and purifying fluorine tail gas according to claim 1, characterized in that: An air inlet pipe (16) is fixedly connected to one side of the outer surface of the absorption tower (1), and an induced draft fan (17) is fixedly installed at the top of the air inlet pipe (16).

6. The apparatus for absorbing and purifying fluorine tail gas according to claim 1, characterized in that: An outlet pipe (18) is fixedly connected to the upper surface of the absorption tower (1), and a support leg (19) is fixedly connected to the edge of the lower surface of the absorption tower (1).

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