High-temperature dust removal filter for yellow phosphorus furnace outlet gas

Abstract

The utility model relates to dust filter technical field, and disclose a kind of high-temperature dust filter of yellow phosphorus electric furnace outlet furnace gas, including filter box, the filter box is hollow rectangular body, and the air inlet is fixedly installed in filter box front end, and the engaging groove of being inclined is established in filter box cavity two sides;Filter core board;Electromagnetic vibrator;Scrape ash subassembly, the scrape ash subassembly includes the scrape ash unit being set in filter box cavity and the drive unit being set in the outer wall of filter box. By adopting black silicon carbide ceramic fiber sintered body as filter core board material and coating nanometer PTFE coating to form 0.1-0.3 μm micropore, the micropore formed by nanometer PTFE coating can efficiently intercept dust particle, while improving wear resistance and corrosion resistance to prolong service life;Fluorine rubber sealing gasket is tightly filled gap, prevent unfiltered furnace gas short-circuit leakage, compared with traditional water spray wet recovery mode, significantly improve dust removal effect, guarantee furnace gas purification quality.

Description

Technical Field

[0001] This utility model relates to the field of dust removal filter technology, and in particular to a high-temperature dust removal filter for the furnace gas at the outlet of a yellow phosphorus electric furnace. Background Technology

[0002] Currently, the only method for recovering yellow phosphorus furnace gas is direct wet treatment with water spraying. This involves using a spray tower to spray and cool the gas to recover yellow phosphorus. However, since the furnace gas also contains a large amount of dust, the dust is also sprayed down from the furnace gas while the yellow phosphorus is being recovered by water spraying in the spray tower. This results in the crude phosphorus obtained from the spraying containing a large amount of dust. At the same time, some of the dust separates with the water and enters the circulating cooling water, generating a large amount of mud phosphorus, which is very difficult to treat in the later stages.

[0003] Existing bag filters operate at temperatures below 150 degrees Celsius, while the temperature of yellow phosphorus furnace gas is between 280 and 300 degrees Celsius, making it impossible to use bag filters to filter fine dust. As for metal membrane filtration, the metal membrane is easily clogged after the yellow phosphorus furnace gas condenses, making metal membrane cleaning troublesome and resulting in high downtime cleaning costs.

[0004] To address the issues of high temperature resistance and easy clogging in dry recovery of yellow phosphorus furnace gas, this application proposes a high-temperature dust removal filter for the furnace gas at the outlet of a yellow phosphorus electric furnace. Utility Model Content

[0005] To address the shortcomings of existing technologies, this utility model provides a high-temperature dust removal filter for the furnace gas at the outlet of a yellow phosphorus electric furnace, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace includes: a filter box, which is a hollow rectangular body with an air inlet fixedly installed at the front end and inclined locking grooves on both sides of the filter box cavity; a filter element plate, which is locked in the locking grooves in the filter box cavity, the filter element plate being made of black silicon carbide ceramic fiber sintered body, the surface of the filter element plate being coated with a nano-level PTFE coating to form micropores, and a fluororubber sealing gasket being provided between the outer periphery of the filter element plate and the locking grooves of the filter box; an electromagnetic vibrator, which is located at the top of the filter box and is used to periodically vibrate the filter element plate; and a dust scraping assembly, which includes a dust scraping unit located in the filter box cavity and a drive unit located on the outer wall of the filter box, the dust scraping unit including a rotating shaft, and the drive unit including a first lifting block, a lead screw, and a servo motor.

[0007] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, a vibration groove and a mounting base are fixedly installed at the top of the filter box. An electromagnetic vibrator is fixedly installed on the mounting base, and the top of the mounting base is tilted. The vibration groove is connected to the locking groove inside the filter box cavity. The output shaft of the electromagnetic vibrator moves through the top of the mounting base and is fixedly connected to a pressure plate.

[0008] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, multiple sets of pressure rods are fixedly installed at the bottom of the pressure plate. The ends of the multiple sets of pressure rods away from the pressure plate move through the vibration groove and are fixedly connected to the top of the filter element plate. A sealing ring is provided between the pressure rod and the vibration groove, and a compression spring is sleeved on the outer circumference of the pressure rod.

[0009] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, lifting grooves are installed through both sides of the outer wall of the filter box. The lifting grooves have the same inclination as the locking grooves of the filter box. A servo motor is fixedly installed at the top of the lifting groove on one side of the filter box.

[0010] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, multiple sets of fan blades are fixedly installed on the outer wall of the rotating shaft. A first lifting block and a second lifting block are respectively provided on both sides of the rotating shaft near the lifting groove. The first lifting block and the second lifting block are movably connected to the rotating shaft through bearings, and the first lifting block and the second lifting block are movably engaged in the corresponding lifting groove.

[0011] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, a lead screw is movably installed in the lifting groove on one side of the first lifting block via a bearing. The lead screw movably passes through the first lifting block, and the lead screw and the first lifting block are connected by a thread. A guide rod is fixedly installed in the lifting groove on one side of the second lifting block. The guide rod movably passes through the second lifting block. Dustproof telescopic sleeves are provided between the outer circumference of the lead screw and the guide rod and the corresponding first and second lifting blocks. The output shaft of the servo motor movably passes through the lifting groove and is fixedly connected to one end of the lead screw.

[0012] According to the high-temperature dust removal filter for the furnace gas at the outlet of the yellow phosphorus electric furnace, multiple sets of columns are fixedly installed on the outer wall of the rotating shaft. The multiple sets of columns are distributed at equal intervals and staggered on the outer wall of the rotating shaft. A scraper is welded and fixed to the end of the multiple sets of columns away from the rotating shaft. The rotation of the rotating shaft drives the scraper to contact the outer surface of the filter element plate.

[0013] This utility model provides a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace. It has the following beneficial effects: (1) By setting the filter box as a hollow rectangle to provide a closed filtration space, an air inlet is installed at the front end to guide the furnace gas into the direction. An inclined locking groove is opened in the cavity to adapt to the locking installation of the filter plate. At the same time, black silicon carbide ceramic fiber sintered body is used as the filter plate material and coated with a nano-level PTFE coating to form 0.1-0.3μm micropores. A fluororubber sealing gasket is set between the filter plate and the locking groove of the filter box. The inclined locking groove facilitates the precise positioning of the filter plate and subsequent replacement, so that the furnace gas can fully contact the filter plate. The special material of the filter plate ensures that it can withstand the high temperature furnace gas environment. The micropores formed by the nano-level PTFE coating can efficiently intercept dust particles, while improving wear resistance and corrosion resistance to extend service life. The fluororubber sealing gasket tightly fills the gap to prevent short-circuit leakage of unfiltered furnace gas. Compared with the traditional water spray wet recovery method, the dust removal effect is significantly improved and the quality of furnace gas purification is guaranteed.

[0014] (2) By setting a vibration groove, mounting base and fixed electromagnetic vibrator at the top of the filter box, and cooperating with pressure plate, multiple sets of pressure rods and compression springs to transmit vibration, and setting lifting grooves with the same inclination as the locking groove on both sides of the filter box, and cooperating with a servo motor driven screw, guide rod and first lifting block and second lifting block, as well as a rotating shaft with fan blades, column and scraper, and dustproof telescopic sleeves are set outside the screw and guide rod. The periodic vibration generated by the electromagnetic vibrator is transmitted to the filter plate through the pressure plate and pressure rod. The compression spring buffers the rigid impact to avoid damage to the filter plate, so that the surface dust is caused by inertia. The system features a servo motor-driven lead screw that moves the lifting block along the lifting groove. The guide rod ensures smooth lifting of the ash scraping unit. The furnace gas impact fan blades drive the rotating shaft and scraper to rotate. During the lifting process, the scraper thoroughly removes stubborn dust from the surface of the filter plate. The vibration cleaning and ash scraping actions work together to enhance the cleaning effect. The dustproof telescopic sleeve prevents dust from entering the lifting groove and contaminating the lead screw and guide rod, maintaining the operating accuracy of the drive unit and ensuring the long-term stable operation of the cleaning system. This allows the filter plate to maintain good filtration performance, reduces equipment maintenance frequency and costs, and achieves continuous and efficient purification of high-temperature furnace gas. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural schematic diagram of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace according to the present invention. Figure 2 This is a schematic diagram on the right side of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace according to the present invention. Figure 3 This is a schematic diagram showing the positional relationship between the pressure plate, pressure rod, and compression spring of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace according to this utility model. Figure 4 This is a schematic diagram showing the connection relationship between the scraping unit, lead screw, and guide rod of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace according to this utility model. Figure 5This is a perspective view of the ash scraping unit of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace according to this utility model.

[0016] Legend: 10. Filter box; 11. Air inlet; 12. Filter plate; 13. Lifting groove; 14. Servo motor; 15. Vibration groove; 16. Electromagnetic vibrator; 17. Mounting base; 18. Pressure plate; 19. Pressure rod; 20. Compression spring; 21. Rotating shaft; 22. Fan blade; 23. First lifting block; 24. Lead screw; 25. Second lifting block; 26. Guide rod; 27. Column; 28. Scraper. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0018] Please see Figure 1-5 As shown, this utility model is a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace, including a filter box 10, which is a hollow rectangular body. An air inlet 11 is fixedly installed at the front end of the filter box 10. The air inlet 11 serves as a channel for the outlet gas of the yellow phosphorus electric furnace to enter the filtration system, guiding the gas into the filter box 10. Inclined locking grooves are provided on both sides of the cavity of the filter box 10. A filter element plate 12 is installed in the locking grooves in the cavity of the filter box 10. The filter element plate 12 is made of black silicon carbide ceramic fiber sintered body. The surface of the filter element plate 12 is coated with a nano-level PTFE coating, forming micropores of 0.1-0.3μm. A fluororubber sealing gasket is provided between the outer periphery of the filter element plate 12 and the locking groove of the filter box 10. By setting up the filter box 10 to provide stable structural support and enclosed space, the inclined locking grooves opened in the filter box 10 cavity facilitate the limiting and locking of the filter element plate 12. The special material and coating design of the filter element plate 12 enable it to efficiently filter dust in high-temperature furnace gas environment, and also have good wear resistance and corrosion resistance, extending its service life. Compared with traditional water spray wet recycling, the dust removal effect is better.

[0019] It is worth noting that both the electromagnetic vibrator 16 and the servo motor 14 are powered by mains electricity. The speed regulation of the servo motor 14 through the PLC controller is a well-known prior art and will not be described in detail here.

[0020] like Figure 1-2As shown, a vibration groove 15 and a mounting base 17 are fixedly installed at the top of the filter box 10. An electromagnetic vibrator 16 is fixedly installed on the mounting base 17 for periodic vibration of the filter element plate 12. The top of the mounting base 17 is tilted. The vibration groove 15 communicates with the engagement groove inside the filter box 10. The output shaft of the electromagnetic vibrator 16 movably passes through the top of the mounting base 17 and is fixedly connected to a pressure plate 18. Multiple sets of pressure rods 19 are fixedly installed at the bottom of the pressure plate 18. The ends of the multiple sets of pressure rods 19 away from the pressure plate 18 movably pass through the vibration groove 15 and are fixedly connected to the top of the filter element plate 12. A sealing ring is provided between the pressure rod 19 and the vibration groove 15. A compression spring 20 is sleeved on the outer circumference of the pressure rod 19. The periodic vibration generated by the electromagnetic vibrator 16 during operation is transmitted to the filter plate 12 through the pressure plate 18 and the pressure rod 19, causing the dust adhering to the surface of the filter plate 12 to detach from the surface due to the inertial force generated by the vibration, effectively preventing the micropores of the filter plate 12 from clogging. The inclined design of the mounting base 17 ensures that the vibration direction is on the same inclined plane as the surface of the filter plate 12, maximizing the vibration cleaning effect. The compression spring 20 plays a role in buffering and resetting.

[0021] like Figure 2 and Figure 4 As shown, lifting grooves 13 are installed through both sides of the outer wall of the filter box 10. The inclination of the lifting grooves 13 and the locking grooves of the filter box 10 is the same, ensuring that the scraping unit remains parallel to the filter plate 12 during the lifting process. The servo motor 14 is fixedly installed at the top of the lifting groove 13 on one side of the filter box 10. The scraping assembly includes a scraping unit disposed in the cavity of the filter box 10 and a drive unit disposed on the outer wall of the filter box 10. The scraping unit includes a rotating shaft 21. Multiple sets of fan blades 22 are fixedly installed on the outer wall of the rotating shaft 21. A first lifting block 23 and a second lifting block 25 are respectively disposed on both sides of the rotating shaft 21 near the lifting groove 13. The first lifting block 23 and the second lifting block 25 are movably connected to the rotating shaft 21 through bearings. The first lifting block 23 and the second lifting block 25 are movably locked in the corresponding lifting groove 13. By setting the inclined design of the lifting groove 13 to match the inclined angle of the filter plate 12, it is ensured that the dust scraping unit can always maintain an appropriate distance from the filter plate 12, providing a basis for comprehensive dust scraping. After being impacted by the airflow, the multiple sets of fan blades 22 drive the rotating shaft 21 to rotate. The rotation of the rotating shaft 21 drives the multiple sets of columns 27 and scrapers 28 to rotate and scrape the surface of the filter plate 12. This works in synergy with the vibration cleaning to enhance the dust removal effect.

[0022] like Figure 4-5As shown, the drive unit includes a first lifting block 23, a lead screw 24, and a servo motor 14. The lead screw 24 is movably mounted in the lifting groove 13 on one side of the first lifting block 23 via a bearing. The lead screw 24 movably passes through the first lifting block 23, and the lead screw 24 and the first lifting block 23 are threadedly connected. A guide rod 26 is fixedly installed in the lifting groove 13 on one side of the second lifting block 25. The guide rod 26 movably passes through the second lifting block 25. Dustproof telescopic sleeves are provided between the outer circumference of the lead screw 24 and the corresponding first lifting block 23 and second lifting block 25. The output shaft of the servo motor 14 movably passes through the lifting groove 13 and is fixedly connected to one end of the lead screw 24. Multiple sets of columns 27 are fixedly installed on the outer wall of the rotating shaft 21. The multiple sets of columns 27 are evenly spaced and staggered on the outer wall of the rotating shaft 21 for better cleaning effect. A scraper 28 is welded and fixed to the end of the multiple sets of columns 27 away from the rotating shaft 21. The rotation of the rotating shaft 21 drives the scraper 28 to contact the outer surface of the filter plate 12. By setting the servo motor 14 to drive the lead screw 24 to rotate during operation, the first lifting block 23 is precisely lifted and lowered through threaded transmission. With the guidance of the guide rod 26, the lifting and lowering movement of the dust scraping unit is stable and controllable. The cleaning range can be precisely controlled according to the degree of contamination of the filter plate 12. The dustproof telescopic sleeve effectively protects the lead screw 24 and guide rod 26 from dust contamination, maintaining the long-term stable operation of the device. The scraper 28 can completely scrape away stubborn dust on the surface of the filter plate 12 through the rotation and lifting action of the rotating shaft 21, ensuring that the filter plate 12 maintains good filtration performance for a long time, reducing equipment maintenance costs and downtime.

[0023] The implementation principle of this utility model of a high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace is as follows: First, the high-temperature furnace gas from the yellow phosphorus electric furnace outlet enters the filter box 10 through the air inlet 11. When the furnace gas comes into contact with the filter plate 12, the 0.1-0.3μm micropores of the PTFE coating on the surface of the filter plate 12 will intercept dust particles in the furnace gas. The black silicon carbide ceramic fiber sintered material ensures that it works stably in a high-temperature environment, while the nano-level PTFE coating improves corrosion resistance and wear resistance. The fluororubber sealing gasket prevents unfiltered furnace gas from leaking through the gaps, thus achieving efficient purification of the furnace gas.

[0024] Secondly, as the filtration time increases, dust will adhere to the surface of the filter plate 12. At this time, the dust removal system is activated, and the electromagnetic vibrator 16 generates periodic vibrations, which are transmitted to the filter plate 12 through the pressure plate 18 and the pressure rod 19. The compression spring 20 buffers the vibration to prevent damage to the filter plate 12, and the surface dust is removed due to inertia. At the same time, the servo motor 14 drives the lead screw 24 to rotate, which drives the first lifting block 23 to rise and fall along the lifting groove 13 through the threaded transmission. The guide rod 26 ensures that the second lifting block 25 moves smoothly, driving the rotating shaft 21 to rise and fall synchronously. The flow of furnace gas impacts the fan blade 22, causing the rotating shaft 21 to rotate, which in turn drives the scraper 28 connected to the column 27 to rotate. During the lifting process, the stubborn dust on the surface of the filter plate 12 is completely scraped off. The vibration and scraping work together to enhance the dust removal effect.

[0025] Finally, during the dust removal process, the dustproof telescopic sleeve protects the running accuracy of the lead screw 24 and guide rod 26, ensuring the long-term stable operation of the dust removal system. The cleaned dust detaches from the filter plate 12 and falls out, allowing the filter plate 12 to maintain good filtration performance and achieve continuous and efficient purification of high-temperature furnace gas. Compared with traditional water spray wet recycling, it not only has a better dust removal effect, but also reduces the frequency and cost of equipment maintenance and extends its service life.

[0026] The above embodiments are preferred implementations of this utility model. In addition, this utility model can be implemented in other ways. Any obvious substitutions without departing from the concept of this technical solution are within the protection scope of this utility model.

Claims

1. A high-temperature dust removal filter for the outlet gas of a yellow phosphorus electric furnace, characterized in that, include: The filter box (10) is a hollow rectangular body. An air inlet (11) is fixedly installed at the front end of the filter box (10). Inclined locking grooves are opened on both sides of the cavity of the filter box (10). The filter element plate (12) is snapped into the snap-fit ​​groove in the cavity of the filter box (10). The material of the filter element plate (12) is black silicon carbide ceramic fiber sintered body. The surface of the filter element plate (12) is coated with a nano-level PTFE coating to form micropores. A fluororubber sealing gasket is provided between the outer periphery of the filter element plate (12) and the snap-fit ​​groove of the filter box (10). An electromagnetic vibrator (16) is installed at the top of the filter box (10) and is used to periodically vibrate the filter plate (12). The dust scraping assembly includes a dust scraping unit disposed in the cavity of the filter box (10) and a drive unit disposed on the outer wall of the filter box (10). The dust scraping unit includes a rotating shaft (21), and the drive unit includes a first lifting block (23), a lead screw (24), and a servo motor (14).

2. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 1, characterized in that: The filter box (10) is fixedly installed with a vibration groove (15) and a mounting base (17) at the top. The electromagnetic vibrator (16) is fixedly installed on the mounting base (17). The top of the mounting base (17) is tilted. The vibration groove (15) is connected to the locking groove inside the filter box (10). The output shaft of the electromagnetic vibrator (16) moves through the top of the mounting base (17) and is fixedly connected to a pressure plate (18).

3. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 2, characterized in that: Multiple sets of pressure rods (19) are fixedly installed at the bottom of the pressure plate (18). The end of the multiple sets of pressure rods (19) away from the pressure plate (18) passes through the vibration groove (15) and is fixedly connected to the top of the filter plate (12). A sealing ring is provided between the pressure rod (19) and the vibration groove (15). A compression spring (20) is sleeved on the outer circumference of the pressure rod (19).

4. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 1, characterized in that: The filter box (10) has lifting grooves (13) installed through both sides of its outer wall. The lifting grooves (13) and the locking grooves of the filter box (10) have the same inclination. The servo motor (14) is fixedly installed at the top of the lifting groove (13) on one side of the filter box (10).

5. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 1, characterized in that: Multiple sets of fan blades (22) are fixedly installed on the outer wall of the rotating shaft (21). A first lifting block (23) and a second lifting block (25) are respectively provided on both sides of the rotating shaft (21) near the lifting groove (13). The first lifting block (23) and the second lifting block (25) are movably connected to the rotating shaft (21) through bearings. The first lifting block (23) and the second lifting block (25) are movably engaged in the corresponding lifting groove (13).

6. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 1, characterized in that: A lead screw (24) is movably installed in the lifting groove (13) on one side of the first lifting block (23) via a bearing. The lead screw (24) movably passes through the first lifting block (23). The lead screw (24) and the first lifting block (23) are connected by a thread. A guide rod (26) is fixedly installed in the lifting groove (13) on one side of the second lifting block (25). The guide rod (26) movably passes through the second lifting block (25). Dustproof telescopic sleeves are provided between the outer circumference of the lead screw (24) and the guide rod (26) and the corresponding first lifting block (23) and second lifting block (25). The output shaft of the servo motor (14) movably passes through the lifting groove (13) and is fixedly connected to one end of the lead screw (24).

7. The high-temperature dust removal filter for the outlet gas of the yellow phosphorus electric furnace according to claim 1, characterized in that: Multiple sets of columns (27) are fixedly installed on the outer wall of the rotating shaft (21). The multiple sets of columns (27) are distributed at equal intervals on the outer wall of the rotating shaft (21). A scraper (28) is welded and fixed to one end of the multiple sets of columns (27) away from the rotating shaft (21). The rotation of the rotating shaft (21) drives the scraper (28) to contact the outer surface of the filter plate (12).

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