A fluorite drying process tail gas treatment device

Abstract

The application belongs to the technical field of fluorite processing tail gas treatment, and discloses a fluorite drying process tail gas treatment device, which comprises a purification tank, a sealing cover movably installed at the top end of the purification tank, a control valve fixedly installed at the position close to the bottom end of the left side of the purification tank, a fan fixedly communicated with the left end of the control valve, and a mounting seat fixedly installed at the position close to the bottom end in the inner cavity of the purification tank. The high-temperature steam is introduced from the bottom end of the purification tank, the active carbon adsorption layer is automatically lifted through the pressure action of the high-temperature steam, the high-temperature steam can be fully contacted with the active carbon adsorption layer, the heat and water vapor in the steam can promote the volatilization of organic matter from the surface of the active carbon, the organic matter is desorbed, the active carbon restores a certain adsorption capacity, the replacement of the active carbon is not needed in the whole process, the maintenance of the active carbon can be avoided in a certain use period, and the tail gas treatment efficiency is significantly improved.

Description

Technical Field

[0001] This invention belongs to the field of fluorite processing tail gas treatment technology, specifically a tail gas treatment device for fluorite drying process. Background Technology

[0002] Fluorite, also known as fluorspar, is an important mineral and industrial raw material. When fluorite is used to prepare hydrofluoric acid, it needs to be dried to remove moisture and reduce its moisture content to a certain level. This drying process generates exhaust gas, which mainly consists of sulfur dioxide, nitrogen oxides, dust particles, and odors. Therefore, a fluorite drying process exhaust gas treatment device is required to treat the waste gas generated during the drying process.

[0003] Because the exhaust gas produced during drying contains a large amount of harmful substances, traditional treatment devices are mainly divided into wet absorption towers and dry waste gas treatment devices. Wet absorption towers mainly use alkaline solution spraying to treat harmful substances. This treatment method requires a large amount of alkaline solution and also requires the installation of a large-scale spray tower, resulting in high operating costs. Existing technology mainly uses dry waste gas treatment devices, which generally have activated carbon installed inside. They mainly use activated carbon adsorption to remove harmful substances. However, after a period of use, activated carbon will become supersaturated, at which point it needs to be replaced before it can continue to be used, which can easily affect the overall treatment efficiency.

[0004] In traditional dry waste gas treatment devices, after a period of time, some impurities remain at the bottom of the tank after the substances adsorbed by activated carbon are absorbed. However, these impurities are suspended by the airflow, causing some pollution to the airflow. This necessitates regular cleaning of the discharge part of the tank, which seriously affects the overall treatment efficiency. Therefore, it is crucial to achieve automatic slag discharge and extend the cleaning cycle. Summary of the Invention

[0005] The purpose of this invention is to provide a tail gas treatment device for fluorite drying process to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a fluorite drying process tail gas treatment device, comprising a purification tank, a sealing cover movably installed at the top of the purification tank, a control valve fixedly installed on the left side of the purification tank near the bottom, a fan fixedly connected to the left end of the control valve, an mounting base fixedly installed on the inner cavity of the purification tank near the bottom, an activated carbon adsorption layer movably installed inside the mounting base, a regeneration component fixedly installed at the bottom of the purification tank directly below the activated carbon adsorption layer, a power tank located in the middle of the bottom of the purification tank, a gas supply pipe fixedly connected to the top of the power tank, an air inlet pipe fixedly connected to the bottom of the power tank, the top of the gas supply pipe connected to the bottom of the power tank, a drainage component fixedly installed on the right side of the bottom of the purification tank, the top of the gas supply pipe connected to the bottom of the regeneration component, a main shaft movably connected to the middle of the power tank, and an impeller located inside the power tank fixedly sleeved on the outer side of the main shaft.

[0007] Before treating the exhaust gas, the device can be placed on a flat surface and the input end of the fan can be connected to the exhaust gas input device. At the same time, a collection tank is placed at the bottom of the drainage component, and the air inlet pipe is connected to the external high-temperature steam pipe. When necessary, the steam valve is opened and the power supply of the fan is connected to complete the preparations before treatment.

[0008] As a further technical solution of the present invention, the bottom end of the purification tank is fixedly installed with support legs at equal angles, the bottom end of the air inlet pipe is connected to the external steam channel, and the input end of the fan is connected to the external exhaust gas pipe.

[0009] As a further technical solution of the present invention, a solid-liquid separator is fixedly connected to the middle of the top of the sealing cover, an air outlet pipe is fixedly connected to the top of the solid-liquid separator, a water outlet pipe is fixedly connected to the rear end of the solid-liquid separator, and a dust cover is fixedly installed at the top of the air outlet pipe.

[0010] During exhaust gas treatment, the exhaust gas to be treated is drawn into the control valve by turning on the fan. The control valve is then opened to guide the exhaust gas into the purification tank, where it passes through the activated carbon adsorption layer to adsorb harmful components. The clean gas is discharged through the top of the purification tank and enters the solid-liquid separator for gas-liquid separation. The separated gas is discharged through the gas outlet pipe, while the separated liquid is discharged through the water outlet pipe, completing the treatment process.

[0011] As a further technical solution of the present invention, the regeneration component includes a temporary storage tube, the bottom end of which is connected to the bottom end of the inner cavity of the purification tank and communicates with the top end of the gas delivery pipe. A piston plate is movably sleeved inside the temporary storage tube, and a piston rod located inside the temporary storage tube is fixedly connected to the top end of the piston plate.

[0012] As a further technical solution of the present invention, the top end of the piston rod passes through the top end of the temporary storage tube and is fixedly connected to a support plate located below the activated carbon adsorption layer. A return spring is movably sleeved on the outer side of the piston rod, and the upper and lower ends of the return spring are respectively connected to the bottom end of the support plate and the top end of the temporary storage tube.

[0013] As a further technical solution of the present invention, exhaust pipes are fixedly connected to both the front and rear sides of the outer side of the temporary storage tube near the top. The output end of the exhaust pipe is located directly below the activated carbon adsorption layer. A one-way valve is installed inside the exhaust pipe, and the valve is oriented to open outward and close inward.

[0014] When the activated carbon adsorption layer becomes supersaturated due to the adsorption of waste gas, external steam valves can be opened to introduce external steam into the power tank through the inlet pipe and out through the outlet pipe. As the steam enters, the high-temperature steam enters the storage tube and applies a thrust to the bottom of the piston plate. The piston plate and piston rod rise accordingly, and the return spring is stretched until it drives the support plate to move upward. The support plate then pushes the activated carbon adsorption layer upward, allowing it to leave the mounting base. When the piston plate moves upward, that is, above the exhaust pipe inlet, the high-temperature steam can be discharged through the exhaust pipe and act on the surface of the activated carbon adsorption layer. This allows the regeneration process of the supersaturated activated carbon to be achieved through steam.

[0015] By utilizing high-temperature steam and introducing it from the bottom of the purification tank, the pressure of the high-temperature steam causes the activated carbon adsorption layer to rise automatically, allowing the high-temperature steam to fully contact the activated carbon adsorption layer. The heat and moisture in the steam promote the volatilization of organic matter from the surface of the activated carbon, causing desorption and restoring some of the activated carbon's adsorption capacity. The entire process does not require the replacement of activated carbon, avoiding maintenance within a certain service life and significantly improving the efficiency of exhaust gas treatment.

[0016] As a further technical solution of the present invention, the drainage component includes a slag discharge pipe, the top end of which is connected to one side of the bottom of the purification tank through a connecting pipe, the bottom end of which is fixedly connected to a slag discharge port, and a cleaning plate is movably sleeved on the inner side of the slag discharge pipe. The cleaning plate moves left and right relative to the slag discharge pipe, and the cleaning plate is made of cast iron.

[0017] As a further technical solution of the present invention, fixed guide rails are installed on both the front and rear sides of the slag discharge pipe, and guide blocks are movably engaged inside the fixed guide rails. The main shaft is fixedly sleeved on both the front and rear sides of the outer side of the power tank, and the end of the second connecting rod away from the main shaft is movably connected to the first connecting rod through a rotating shaft.

[0018] As a further technical solution of the present invention, the guide block is displaced left and right relative to the fixed guide rail, the other end of the first connecting rod is movably connected to the front of the guide block through a rotating shaft, a magnet is embedded in the inner side of the guide block, and the guide block is attracted to the cleaning plate through the magnet.

[0019] When using high-temperature steam to regenerate the activated carbon adsorption layer, the desorbed organic impurities fall to the bottom of the purification tank and enter the interior of the slag discharge pipe through the connecting pipe. Some organic matter is discharged directly through the slag discharge port, while a small amount of organic impurities adhere to the interior of the slag discharge pipe. As high-temperature steam is introduced into the power tank, it exerts a force on the impeller and drives it to rotate. The main shaft rotates accordingly, causing the second connecting rod to swing. The first connecting rod then rotates, applying tension and thrust to the guide block. Under the guidance of the fixed guide rail, the guide block can move left and right. Since the front and rear ends of the cleaning plate are mutually attracted to the guide block, when the guide block moves left and right, it can simultaneously drive the cleaning plate to move back and forth relative to the slag discharge pipe, scraping off the impurities adhering to the interior of the slag discharge pipe, thus completing the automatic slag discharge process.

[0020] By reusing the fluidity of high-temperature steam, the pressure of the high-temperature steam is converted into rotational power, which is then converted into reciprocating power. Driven by guide blocks, the cleaning plate is moved left and right. The left and right movement of the cleaning plate relative to the slag discharge pipe enables automatic scraping of the inside of the slag discharge pipe. The entire process is completed automatically. Only steam needs to be introduced to regenerate activated carbon while automatically discharging slag and cleaning the slag discharge pipe. The degree of automation is high, significantly extending the manual cleaning cycle and improving efficiency.

[0021] The beneficial effects of this invention are as follows:

[0022] 1. This invention utilizes high-temperature steam, which is introduced from the bottom of the purification tank. The pressure of the high-temperature steam causes the activated carbon adsorption layer to rise automatically, allowing the high-temperature steam to fully contact the activated carbon adsorption layer. The heat and moisture in the steam promote the volatilization of organic matter from the surface of the activated carbon, causing desorption and restoring some of the activated carbon's adsorption capacity. The entire process does not require the replacement of activated carbon, avoiding maintenance within a certain service life and significantly improving the efficiency of exhaust gas treatment.

[0023] 2. This invention reuses the fluidity of high-temperature steam, converting its pressure into rotational power, and then into reciprocating power. Guide blocks drive the cleaning plate to move left and right, automatically scraping the inside of the slag discharge pipe. The entire process is automated; simply introducing steam regenerates the activated carbon while simultaneously cleaning the slag discharge pipe. This high degree of automation significantly extends the manual cleaning cycle and improves efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the bottom of the overall structure of the present invention;

[0026] Figure 3 This is a cross-sectional schematic diagram of the internal structure of the purification tank of the present invention;

[0027] Figure 4 This is a separate cross-sectional schematic diagram of the structure of the regenerative component of the present invention;

[0028] Figure 5 This is a schematic diagram showing the assembly of the power tank and drainage assembly structure of the present invention;

[0029] Figure 6 This is a cross-sectional schematic diagram of the internal structure of the power tank of the present invention;

[0030] Figure 7 This is a cross-sectional schematic diagram of the internal structure of the drainage component of the present invention;

[0031] Figure 8 for Figure 3 An enlarged schematic diagram of the structure at point A in the middle.

[0032] In the diagram: 1. Purification tank; 2. Sealing cover; 3. Solid-liquid separator; 4. Air outlet pipe; 5. Water outlet pipe; 6. Dust cover; 7. Mounting base; 8. Activated carbon adsorption layer; 9. Fan; 10. Control valve; 11. Support leg; 12. Regeneration component; 121. Temporary storage pipe; 122. Piston plate; 123. Piston rod; 124. Return spring; 125. Support plate; 126. Exhaust pipe; 13. Power tank; 14. Air inlet pipe; 15. Air delivery pipe; 16. Main shaft; 17. Impeller; 18. Drainage component; 181. Slag discharge pipe; 182. Slag discharge port; 183. Cleaning plate; 184. Fixed guide rail; 185. Guide block; 186. First connecting rod; 187. Second connecting rod. Detailed Implementation

[0033] 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. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] like Figures 1 to 8 As shown in the embodiment of the present invention, a fluorite drying process tail gas treatment device includes a purification tank 1. A sealing cover 2 is movably installed on the top of the purification tank 1. A control valve 10 is fixedly installed on the left side of the purification tank 1 near the bottom. A fan 9 is fixedly connected to the left end of the control valve 10. An installation base 7 is fixedly installed in the inner cavity of the purification tank 1 near the bottom. An activated carbon adsorption layer 8 is movably installed inside the installation base 7. A regeneration component 12 is fixedly installed at the bottom of the purification tank 1, located directly below the activated carbon adsorption layer 8. A power tank 13 is provided at the middle of the bottom of the purification tank 1. An air supply pipe 15 is fixedly connected to the top of the power tank 13, and an air inlet pipe 14 is fixedly connected to the bottom of the power tank 13. The top of the air supply pipe 15 is connected to the bottom of the power tank 13. A drainage component 18 is fixedly installed on the right side of the bottom of the purification tank 1. The top of the air supply pipe 15 is connected to the bottom of the regeneration component 12. A main shaft 16 is movably connected to the middle of the power tank 13. An impeller 17 located inside the power tank 13 is fixedly sleeved on the outer side of the main shaft 16.

[0035] Before treating the exhaust gas, the device can be placed on a flat ground and the input end of the fan 9 can be connected to the exhaust gas input device. At the same time, a collection tank is placed at the bottom of the drainage component 18, and the air inlet pipe 14 is connected to the external high-temperature steam pipe. When necessary, the steam valve is opened and the power supply of the fan 9 is connected to complete the preparation before treatment.

[0036] like Figure 1 and Figure 2 as well as Figure 3 and Figure 8 As shown, a support leg 11 is fixedly installed at the bottom of the purification tank 1 at an equal angle. The bottom of the air inlet pipe 14 is connected to the external steam channel. The input end of the fan 9 is connected to the external exhaust gas pipe. A solid-liquid separator 3 is fixedly connected to the middle of the top of the sealing cover 2. An air outlet pipe 4 is fixedly connected to the top of the solid-liquid separator 3. A water outlet pipe 5 is fixedly connected to the rear end of the solid-liquid separator 3. A dust cover 6 is fixedly installed at the top of the air outlet pipe 4.

[0037] During exhaust gas treatment, the exhaust gas to be treated is drawn into the control valve 10 by turning on the fan 9, and then introduced into the purification tank 1 by opening the control valve 10. The exhaust gas is then adsorbed by the activated carbon adsorption layer 8, which adsorbs the harmful components in the exhaust gas. The clean gas is discharged through the top of the purification tank 1 and enters the solid-liquid separator 3 for gas-liquid separation. The separated gas is discharged through the gas outlet pipe 4, and the separated liquid is discharged through the water outlet pipe 5, thus completing the treatment process.

[0038] like Figure 3 and Figure 4 As shown, the regeneration component 12 includes a temporary storage tube 121. The bottom end of the temporary storage tube 121 is connected to the bottom end of the inner cavity of the purification tank 1 and is connected to the top end of the gas supply tube 15. A piston plate 122 is movably sleeved inside the temporary storage tube 121. A piston rod 123 located inside the temporary storage tube 121 is fixedly connected to the top end of the piston plate 122. The top end of the piston rod 123 passes through the top end of the temporary storage tube 121 and is fixedly connected to a support plate 125 located below the activated carbon adsorption layer 8. A return spring 124 is movably sleeved on the outer side of the piston rod 123. The upper and lower ends of the return spring 124 are respectively connected to the bottom end of the support plate 125 and the top end of the temporary storage tube 121. An exhaust pipe 126 is fixedly connected to both the front and rear sides of the outer side of the temporary storage tube 121 near the top end. The output end of the exhaust pipe 126 is located directly below the activated carbon adsorption layer 8. A one-way valve is installed inside the exhaust pipe 126, and the valve direction is outward opening and inward closing.

[0039] Example 1: When the activated carbon adsorption layer 8 becomes supersaturated due to the adsorption of waste gas, external steam can be introduced into the power tank 13 through the inlet pipe 14 by opening the external steam valve and discharged through the gas delivery pipe 15. As the steam enters, the high-temperature steam can enter the interior of the temporary storage pipe 121 and apply a thrust to the bottom of the piston plate 122. At this time, the piston plate 122 and piston rod 123 rise accordingly, and the return spring 124 is stretched until it drives the support plate 125 to move upward. At this time, the support plate 125 can push the activated carbon adsorption layer 8 to move upward, and the activated carbon adsorption layer 8 can leave the interior of the mounting base 7. When the piston plate 122 moves upward, that is, moves above the inlet end of the exhaust pipe 126, the high-temperature steam can be discharged through the exhaust pipe 126 and act on the surface of the activated carbon adsorption layer 8. At this time, the regeneration process of the supersaturated activated carbon can be realized by steam.

[0040] By utilizing high-temperature steam and introducing it from the bottom of the purification tank 1, the activated carbon adsorption layer 8 automatically rises under the pressure of the high-temperature steam. This allows the high-temperature steam to fully contact the activated carbon adsorption layer 8, and the heat and moisture in the steam promote the volatilization of organic matter from the surface of the activated carbon, causing desorption and restoring a certain adsorption capacity of the activated carbon. The entire process does not require replacement of the activated carbon, and maintenance of the activated carbon can be avoided within a certain service life, significantly improving the efficiency of exhaust gas treatment.

[0041] like Figure 2 and Figure 5 as well as Figure 6 and Figure 7 As shown, the drainage assembly 18 includes a slag discharge pipe 181. The top end of the slag discharge pipe 181 is connected to one side of the bottom of the purification tank 1 via a connecting pipe. The bottom end of the slag discharge pipe 181 is fixedly connected to a slag discharge port 182. A cleaning plate 183 is movably sleeved on the inner side of the slag discharge pipe 181. The cleaning plate 183 is laterally displaced relative to the slag discharge pipe 181. The cleaning plate 183 is made of cast iron. Fixed guide rails 184 are installed on both the front and rear sides of the slag discharge pipe 181. Guide blocks are movably engaged inside the fixed guide rails 184. 185. The main shaft 16 is located on the front and rear sides of the outer side of the power tank 13, and the second connecting rod 187 is fixedly sleeved on both sides. The end of the second connecting rod 187 away from the main shaft 16 is movably connected to the first connecting rod 186 through a rotating shaft. The guide block 185 moves left and right relative to the fixed guide rail 184. The other end of the first connecting rod 186 is movably connected to the front of the guide block 185 through a rotating shaft. A magnet is embedded in the inner side of the guide block 185. The guide block 185 is attracted to the cleaning plate 183 through the magnet.

[0042] Example 2: When using high-temperature steam to regenerate the activated carbon adsorption layer 8, the desorbed organic impurities fall to the bottom of the purification tank 1 and enter the interior of the slag discharge pipe 181 through the connecting pipe. Some organic matter is directly discharged through the slag discharge port 182, while a small amount of organic impurities adhere to the interior of the slag discharge pipe 181. As high-temperature steam enters the interior of the power tank 13, it applies force to the impeller 17 and drives it to rotate. At this time, the main shaft 16 rotates accordingly and drives the second connecting rod 187 to swing. The first connecting rod 186 rotates accordingly and applies tension and thrust to the guide block 185. The guide block 185 can then move left and right under the guidance of the fixed guide rail 184. Since the front and rear ends of the cleaning plate 183 are mutually attracted with the guide block 185, when the guide block 185 moves left and right, it can simultaneously drive the cleaning plate 183 to move back and forth relative to the slag discharge pipe 181, scraping off the impurities adhering to the interior of the slag discharge pipe 181, thus completing the automatic slag discharge process.

[0043] By reusing the fluidity of high-temperature steam, the pressure of the high-temperature steam is converted into rotational power, which is then converted into reciprocating power. Driven by the guide block 185, the cleaning plate 183 is moved left and right. The left and right displacement of the cleaning plate 183 relative to the slag discharge pipe 181 enables automatic scraping of the inside of the slag discharge pipe 181. The whole process is completed automatically. Only steam needs to be introduced to realize the regeneration of activated carbon while completing the automatic slag discharge and cleaning of the slag discharge pipe 181. The degree of automation is high, which significantly extends the manual cleaning cycle and improves efficiency.

[0044] Working principle and usage process:

[0045] During exhaust gas treatment, the exhaust gas to be treated is drawn into the control valve 10 by turning on the fan 9, and the exhaust gas is introduced into the purification tank 1 by opening the control valve 10. The exhaust gas is then adsorbed by the activated carbon adsorption layer 8, which adsorbs the harmful components in the exhaust gas. The clean gas is discharged through the top of the purification tank 1 and enters the solid-liquid separator 3 for gas-liquid separation. The separated gas is discharged through the gas outlet pipe 4, and the separated liquid is discharged through the water outlet pipe 5, thus completing the treatment process.

[0046] When the activated carbon adsorption layer 8 becomes supersaturated due to the adsorption of waste gas, external steam can be introduced into the power tank 13 through the inlet pipe 14 by opening the external steam valve and then discharged through the gas delivery pipe 15. As the steam enters, the high-temperature steam can enter the interior of the temporary storage pipe 121 and apply a thrust to the bottom of the piston plate 122. At this time, the piston plate 122 and piston rod 123 rise accordingly, and the return spring 124 is stretched until it drives the support plate 125 to move upward. At this time, the support plate 125 can push the activated carbon adsorption layer 8 to move upward, and the activated carbon adsorption layer 8 can leave the interior of the mounting base 7. When the piston plate 122 moves upward, that is, moves above the inlet end of the exhaust pipe 126, the high-temperature steam can be discharged through the exhaust pipe 126 and act on the surface of the activated carbon adsorption layer 8. At this time, the regeneration process of the supersaturated activated carbon can be realized by steam.

[0047] When the activated carbon adsorption layer 8 is regenerated using high-temperature steam, the desorbed organic impurities fall to the bottom of the purification tank 1 and enter the interior of the slag discharge pipe 181 through the connecting pipe. Some organic matter is discharged directly through the slag discharge port 182, while a small amount of organic impurities adhere to the interior of the slag discharge pipe 181. As high-temperature steam is introduced into the power tank 13, it applies force to the impeller 17 and drives it to rotate. At this time, the main shaft 16 rotates accordingly and drives the second connecting rod 187 to swing. The first connecting rod 186 rotates accordingly and applies tension and thrust to the guide block 185. The guide block 185 can then move left and right under the guidance of the fixed guide rail 184. Since the front and rear ends of the cleaning plate 183 are mutually attracted to the guide block 185, when the guide block 185 moves left and right, it can simultaneously drive the cleaning plate 183 to move back and forth relative to the slag discharge pipe 181, scraping off the impurities adhering to the interior of the slag discharge pipe 181, thus completing the automatic slag discharge process.

[0048] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for treating exhaust gas from a fluorite drying process, comprising a purification tank (1), characterized in that: A sealing cap (2) is movably installed on the top of the purification tank (1). A control valve (10) is fixedly installed on the left side of the purification tank (1) near the bottom. A fan (9) is fixedly connected to the left end of the control valve (10). A mounting base (7) is fixedly installed on the inner cavity of the purification tank (1) near the bottom. An activated carbon adsorption layer (8) is movably installed inside the mounting base (7). A regeneration component (12) is fixedly installed at the bottom of the purification tank (1) directly below the activated carbon adsorption layer (8). A power tank (13) is provided in the middle of the bottom of the purification tank (1). The top of the power tank (13) is fixedly connected to an air supply pipe (15), the bottom of the power tank (13) is fixedly connected to an air inlet pipe (14), the bottom of the air supply pipe (15) is connected to the bottom of the power tank (13), a drainage component (18) is fixedly installed on the right side of the bottom of the purification tank (1), the top of the air supply pipe (15) is connected to the bottom of the regeneration component (12), a main shaft (16) is movably connected to the middle of the power tank (13), and an impeller (17) located inside the power tank (13) is fixedly sleeved on the outer side of the main shaft (16). The regeneration component (12) includes a temporary storage tube (121), the bottom end of which is connected to the bottom end of the inner cavity of the purification tank (1) and communicates with the top end of the gas delivery tube (15). A piston plate (122) is movably sleeved inside the temporary storage tube (121), and a piston rod (123) located inside the temporary storage tube (121) is fixedly connected to the top end of the piston plate (122). The top end of the piston rod (123) passes through the top end of the temporary storage tube (121) and is fixedly connected to a support plate (125) located below the activated carbon adsorption layer (8). A return spring (124) is movably sleeved on the outer side of the piston rod (123). The upper and lower ends of the return spring (124) are respectively connected to the bottom end of the support plate (125) and the top end of the temporary storage tube (121). The temporary storage tube (121) has exhaust pipes (126) fixedly connected to both the front and rear sides near the top of its outer side. The output end of the exhaust pipe (126) is located directly below the activated carbon adsorption layer (8). A one-way valve is installed inside the exhaust pipe (126), and the valve is open to the outside and closed to the inside.

2. The fluorite drying process tail gas treatment device according to claim 1, characterized in that: The bottom of the purification tank (1) is fixedly installed with support legs (11) at equal angles. The bottom of the air inlet pipe (14) is connected to the external steam channel. The input end of the fan (9) is connected to the external exhaust gas pipe.

3. The fluorite drying process tail gas treatment device according to claim 1, characterized in that: The top of the sealing cover (2) is fixedly connected to the middle of the solid-liquid separator (3), the top of the solid-liquid separator (3) is fixedly connected to the air outlet pipe (4), the rear end of the solid-liquid separator (3) is fixedly connected to the water outlet pipe (5), and the top of the air outlet pipe (4) is fixedly installed with a dust cover (6).

4. The fluorite drying process tail gas treatment device according to claim 1, characterized in that: The drainage component (18) includes a slag discharge pipe (181). The top end of the slag discharge pipe (181) is connected to one side of the bottom end of the purification tank (1) through a connecting pipe. The bottom end of the slag discharge pipe (181) is fixedly connected to a slag discharge port (182). A cleaning plate (183) is movably sleeved on the inner side of the slag discharge pipe (181). The cleaning plate (183) moves left and right relative to the slag discharge pipe (181). The cleaning plate (183) is made of cast iron.

5. The fluorite drying process tail gas treatment device according to claim 4, characterized in that: Fixed guide rails (184) are installed on both the front and rear sides of the slag discharge pipe (181). Guide blocks (185) are movably engaged inside the fixed guide rails (184). The main shaft (16) is fixedly sleeved on both the front and rear sides of the outer side of the power tank (13) with second connecting rods (187). The end of the second connecting rod (187) away from the main shaft (16) is movably connected to the first connecting rod (186) through a rotating shaft.

6. The fluorite drying process tail gas treatment device according to claim 5, characterized in that: The guide block (185) moves left and right relative to the fixed guide rail (184). The other end of the first connecting rod (186) is movably connected to the front of the guide block (185) through a rotating shaft. A magnet is embedded in the inner side of the guide block (185). The guide block (185) is attracted to the cleaning plate (183) through the magnet.

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